global: Rework architecture global_data.h to include <linux/types.h>

In most cases, the architecture global data currently makes use of
assorted linux types, but does not include <linux/types.h> to provide
them. Add <linux/types.h> instead of relying on indirect inclusion.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Switch <asm/global_data.h> to <linux/types.h>

In matching other architectures that have their global_data.h need to
bring in a types.h header, switch to <linux/types.h> on PowerPC.

Signed-off-by: Tom Rini <trini@konsulko.com>

common/board_f: remove XTRN_DECLARE_GLOBAL_DATA_PTR dead code

The XTRN_DECLARE_GLOBAL_DATA_PTR declarations in ppc code are permanently
commented out, so there are no users for this macro:
#if 1
#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r2")
#else /* We could use plain global data, but the resulting code is bigger */
#define XTRN_DECLARE_GLOBAL_DATA_PTR extern
#define DECLARE_GLOBAL_DATA_PTR XTRN_DECLARE_GLOBAL_DATA_PTR \
gd_t *gd
#endif

Remove all references to this macro, but add a documentation note regarding
the possibility of using plain global data for the GD pointer.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

powerpc: remove support for kmtergr1 and MPC8309

The kmtegr1 board is out of maintenance and can be removed. As it is the
only board in the tree using MPC8309 the support for this CPU is dropped
completely.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>

powerpc: Remove unused MPC8540/60ADS code

Remove some code, primarily CPM2 related, that is now unused since the
removal of MPC8540/60ADS.

Fixes 3913191c8a6b ("powerpc: mpc8540ads: mpc8560ads: Drop support for MPC8540/60ADS")
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

ppc: Remove MPC8315ERDB board

This board has not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM. Remove it. As this is the last
ARCH_MPC8315 platform, remove that support as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Don't use relative include for config.h in global_data.h

As there is an arch/powerpc/include/asm/config.h file using "" to get
config.h here can lead to using that rather than include/config.h. This
in turn can lead to a mismatch in the size of gd.

Cc: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>

Drop global data sdhc_adapter for powerpc

The sdhc_adapter of global data has not been used, and we
do not have to use it as global data even we may need it
in the future.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add global variable sdhc_per_clk for arm/powerpc

The QorIQ eSDHC controller supports two reference clocks. They are
platform clock and periperhal clock. The global variable sdhc_clk
has already been used for platform clock.
This patch is to add another global variable sdhc_per_clk for
periperhal clock, which provides higher frequency and is required
to be used for SD UHS and eMMC HS200/HS400 speed modes.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

mpc83xx: Introduce ARCH_MPC837X

Replace CONFIG_MPC837x with a proper CONFIG_ARCH_MPC837X Kconfig option.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC836*

Replace CONFIG_MPC836* with proper CONFIG_ARCH_MPC836* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC834*

Replace CONFIG_MPC834* with proper CONFIG_ARCH_MPC834* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC831*

Replace CONFIG_MPC833* with proper CONFIG_ARCH_MPC833* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC830*

Replace CONFIG_MPC830* with proper CONFIG_ARCH_MPC830* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

clk: Add MPC83xx clock driver

Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: mpc8xx: Change CONFIG_8xx to CONFIG_MPC8xx

CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x

There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc: Drop CONFIG_SYS_ALLOC_DPRAM

This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

powerpc: ppc4xx: remove lwmon5 support

This has not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Remove CONFIG_LWMON5 references.
(Also, remove undefined CONFIG_WD_MAX_RATE while I am here.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stefan Roese <sr@denx.de>

mmc: fsl_esdhc: Add adapter card type identification support

Add adapter card type identification support by reading
FPGA STAT_PRES1 register SDHC Card ID[0:2] bits. To use this function,
define CONFIG_FSL_ESDHC_ADAPTER_IDENT.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
[York Sun: resolve conflicts in README.fsl-esdhc]
Reviewed-by: York Sun <yorksun@freescale.com>

powerpc: 74xx_7xx: remove 74xx_7xx cpu support

All the 74xx_7xx boards are still non-generic boards:
P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2

Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Nye Liu <nyet@zumanetworks.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>

mpc8xx: remove lwmon board support

This board is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>

powerpc: Use generic global_data

Move powerpc over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: arm: Move sdhc_clk into arch_global_data

This is used by both powerpc and arm, but I think it still qualifies as
architecture-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move kbd_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move wdt_last to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move fpga_state to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove console_addr from global data

This does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arm: Move uart_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move dp_alloc_base, dp_alloc_top to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move arbiter fields to arch_global_data

Move arbiter_event_attributes and arbiter_event_address into
arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move reset_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc8220 clocks to arch_global_data

Move these fields into arch_global_data and tidy up. The bExtUart field
does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc512x clocks to arch_global_data

Move ips_clk and csb_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_tlb_cams to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move CONFIG_QE to arch_global_data

Move the quantative easing fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move lbc_clk and cpu to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Update for bsc9132qds.c, b4860qds.c]
Signed-off-by: Tom Rini <trini@ti.com>

ppc: Move mpc83xx clock fields to arch_global_data

Move al mpc83xx fields into arch_global_data and tidy up. Also indent
the nested #ifdef for clarity.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move clock fields to arch_global_data

Move vco_out, cpm_clk, scc_clk, brg_clk into arch_global_data and tidy
up. Leave pci_clk on its own since this should really depend only on
CONFIG_PCI and not any particular chip type.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove extra pci_clk fields from global_data

PPC has several of these fields, selected by chip type, although only one
is ever compiled in.

Instead, use a single field. It would be nice if this could be selected
by CONFIG_PCI, but some chips (e.g. mpc5xxx) use pci_clk even when
CONFIG_PCI is not enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move brg_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add architecture-specific global data

We plan to move architecture-specific data into a separate structure so
that we can make the rest of it common.

As a first step, create struct arch_global_data to hold these fields.
Initially it is empty.

This patch applies to all archs at once. I can split it if this is really
a pain.

Signed-off-by: Simon Glass <sjg@chromium.org>

mpc83xx: add support for mpc8309

This processor, though very similar to other members of the
PowerQUICC II Pro family (namely 8308, 8360 and 832x), provides
yet another feature set than any supported sibling.

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

powerpc: Change bi_baudrate and global data baudrate to int

These don't need to be longs, so change them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>

global_data: unify global flag defines

All the global flag defines are the same across all arches. So unify them
in one place, and add a simple way for arches to extend for their needs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

POST: add post_log_res field for post results in global data

The current post_log_word in global data is currently split into 2x
16 bits: half for the test start, half for the test success.
Since we alredy have more than 16 POST tests defined and more could
be defined, this may result in an overflow and the post_output_backlog
would not work for the tests defined further of these 16 positions.

An additional field is added to global data so that we can now support up
to 32 (depending of architecture) tests. The post_log_word is only used
to record the start of the test and the new field post_log_res for the
test success (or failure). The post_output_backlog is for this change
also adapted.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

console: Implement pre-console buffer

Allow redirection of console output prior to console initialisation to a
temporary buffer.

To enable this functionality, the board (or arch) must define:
- CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer
- CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer
- CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)

The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes
Any earlier characters are silently dropped.

ppc4xx: Add DLVision-10G board support

Board support for the Guntermann & Drunck DLVision-10G.
Adds support for multiple FPGAs per board for gdsys 405ep
architecture.
Adds support for dual link osd hardware for gdsys 405ep.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool. In the result, all definitions of this value can be
deleted from the board config files. We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>

New implementation for internal handling of environment variables.

Motivation:

* Old environment code used a pessimizing implementation:
- variable lookup used linear search => slow
- changed/added variables were added at the end, i. e. most
frequently used variables had the slowest access times => slow
- each setenv() would calculate the CRC32 checksum over the whole
environment block => slow
* "redundant" envrionment was locked down to two copies
* No easy way to implement features like "reset to factory defaults",
or to select one out of several pre-defined (previously saved) sets
of environment settings ("profiles")
* No easy way to import or export environment settings

======================================================================

API Changes:

- Variable names starting with '#' are no longer allowed

I didn't find any such variable names being used; it is highly
recommended to follow standard conventions and start variable names
with an alphanumeric character

- "printenv" will now print a backslash at the end of all but the last
lines of a multi-line variable value.

Multi-line variables have never been formally defined, allthough
there is no reason not to use them. Now we define rules how to deal
with them, allowing for import and export.

- Function forceenv() and the related code in saveenv() was removed.
At the moment this is causing build problems for the only user of
this code (schmoogie - which has no entry in MAINTAINERS); may be
fixed later by implementing the "env set -f" feature.

Inconsistencies:

- "printenv" will '\\'-escape the '\n' in multi-line variables, while
"printenv var" will not do that.

======================================================================

Advantages:

- "printenv" output much better readable (sorted)
- faster!
- extendable (additional variable properties can be added)
- new, powerful features like "factory reset" or easy switching
between several different environment settings ("profiles")

Disadvantages:

- Image size grows by typically 5...7 KiB (might shrink a bit again on
systems with redundant environment with a following patch series)

======================================================================

Implemented:

- env command with subcommands:

- env print [arg ...]

same as "printenv": print environment

- env set [-f] name [arg ...]

same as "setenv": set (and delete) environment variables

["-f" - force setting even for read-only variables - not
implemented yet.]

- end delete [-f] name

not implemented yet

["-f" - force delete even for read-only variables]

- env save

same as "saveenv": save environment

- env export [-t | -b | -c] addr [size]

export internal representation (hash table) in formats usable for
persistent storage or processing:

-t: export as text format; if size is given, data will be
padded with '\0' bytes; if not, one terminating '\0'
will be added (which is included in the "filesize"
setting so you can for exmple copy this to flash and
keep the termination).
-b: export as binary format (name=value pairs separated by
'\0', list end marked by double "\0\0")
-c: export as checksum protected environment format as
used for example by "saveenv" command
addr: memory address where environment gets stored
size: size of output buffer

With "-c" and size is NOT given, then the export command will
format the data as currently used for the persistent storage,
i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
prepend a valid CRC32 checksum and, in case of resundant
environment, a "current" redundancy flag. If size is given, this
value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
checksum and redundancy flag will be inserted.

With "-b" and "-t", always only the real data (including a
terminating '\0' byte) will be written; here the optional size
argument will be used to make sure not to overflow the user
provided buffer; the command will abort if the size is not
sufficient. Any remainign space will be '\0' padded.

On successful return, the variable "filesize" will be set.
Note that filesize includes the trailing/terminating '\0'
byte(s).

Usage szenario: create a text snapshot/backup of the current
settings:

=> env export -t 100000
=> era ${backup_addr} +${filesize}
=> cp.b 100000 ${backup_addr} ${filesize}

Re-import this snapshot, deleting all other settings:

=> env import -d -t ${backup_addr}

- env import [-d] [-t | -b | -c] addr [size]

import external format (text or binary) into hash table,
optionally deleting existing values:

-d: delete existing environment before importing;
otherwise overwrite / append to existion definitions
-t: assume text format; either "size" must be given or the
text data must be '\0' terminated
-b: assume binary format ('\0' separated, "\0\0" terminated)
-c: assume checksum protected environment format
addr: memory address to read from
size: length of input data; if missing, proper '\0'
termination is mandatory

- env default -f

reset default environment: drop all environment settings and load
default environment

- env ask name [message] [size]

same as "askenv": ask for environment variable

- env edit name

same as "editenv": edit environment variable

- env run

same as "run": run commands in an environment variable

======================================================================

TODO:

- drop default env as implemented now; provide a text file based
initialization instead (eventually using several text files to
incrementally build it from common blocks) and a tool to convert it
into a binary blob / object file.

- It would be nice if we could add wildcard support for environment
variables; this is needed for variable name auto-completion,
but it would also be nice to be able to say "printenv ip*" or
"printenv *addr*"

- Some boards don't link any more due to the grown code size:
DU405, canyonlands, sequoia, socrates.

=> cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Stefan Roese <sr@denx.de>,
Heiko Schocher <hs@denx.de>

- Dropping forceenv() causes build problems on schmoogie

=> cc: Sergey Kubushyn <ksi@koi8.net>

- Build tested on PPC and ARM only; runtime tested with NOR and NAND
flash only => needs testing!!

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Cc: Stefan Roese <sr@denx.de>,
Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kubushyn <ksi@koi8.net>

Make getenv() work before relocation.

So far, getenv() would work before relocation is most cases, even
though it was not intended to be used that way. When switching to a
hash table based implementation, this would break a number of boards.

For convenience, we make getenv() check if it's running before
relocation and, if so, use getenv_f() internally.

Note that this is limited to simple cases, as we use a small static
buffer (32 bytes) in the global data for this purpose.

For this reason, it is also not a good idea to convert all current
uses of getenv_f() into getenv() - some of the existing use cases need
to be able to deal with longer variable values, so getenv_f() is still
needed and recommended for use before relocation.

Signed-off-by: Wolfgang Denk <wd@denx.de>

mpc8308: support for Freescale MPC8308 cpu

This patch adds basic support for Freescale MPC8308 CPU. Serial ports,
NOR flash and integrated Ethernet controllers are supported.
PCI Express is also supported. eSDHC, NAND and USB may work but aren't
tested (using ULPI PHY requires additional patch).

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

common/board_f: remove XTRN_DECLARE_GLOBAL_DATA_PTR dead code

The XTRN_DECLARE_GLOBAL_DATA_PTR declarations in ppc code are permanently
commented out, so there are no users for this macro:
#if 1
#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r2")
#else /* We could use plain global data, but the resulting code is bigger */
#define XTRN_DECLARE_GLOBAL_DATA_PTR extern
#define DECLARE_GLOBAL_DATA_PTR XTRN_DECLARE_GLOBAL_DATA_PTR \
gd_t *gd
#endif

Remove all references to this macro, but add a documentation note regarding
the possibility of using plain global data for the GD pointer.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

powerpc: remove support for kmtergr1 and MPC8309

The kmtegr1 board is out of maintenance and can be removed. As it is the
only board in the tree using MPC8309 the support for this CPU is dropped
completely.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>

powerpc: Remove unused MPC8540/60ADS code

Remove some code, primarily CPM2 related, that is now unused since the
removal of MPC8540/60ADS.

Fixes 3913191c8a6b ("powerpc: mpc8540ads: mpc8560ads: Drop support for MPC8540/60ADS")
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

ppc: Remove MPC8315ERDB board

This board has not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM. Remove it. As this is the last
ARCH_MPC8315 platform, remove that support as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Don't use relative include for config.h in global_data.h

As there is an arch/powerpc/include/asm/config.h file using "" to get
config.h here can lead to using that rather than include/config.h. This
in turn can lead to a mismatch in the size of gd.

Cc: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>

Drop global data sdhc_adapter for powerpc

The sdhc_adapter of global data has not been used, and we
do not have to use it as global data even we may need it
in the future.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add global variable sdhc_per_clk for arm/powerpc

The QorIQ eSDHC controller supports two reference clocks. They are
platform clock and periperhal clock. The global variable sdhc_clk
has already been used for platform clock.
This patch is to add another global variable sdhc_per_clk for
periperhal clock, which provides higher frequency and is required
to be used for SD UHS and eMMC HS200/HS400 speed modes.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

mpc83xx: Introduce ARCH_MPC837X

Replace CONFIG_MPC837x with a proper CONFIG_ARCH_MPC837X Kconfig option.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC836*

Replace CONFIG_MPC836* with proper CONFIG_ARCH_MPC836* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC834*

Replace CONFIG_MPC834* with proper CONFIG_ARCH_MPC834* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC831*

Replace CONFIG_MPC833* with proper CONFIG_ARCH_MPC833* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC830*

Replace CONFIG_MPC830* with proper CONFIG_ARCH_MPC830* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

clk: Add MPC83xx clock driver

Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: mpc8xx: Change CONFIG_8xx to CONFIG_MPC8xx

CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x

There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc: Drop CONFIG_SYS_ALLOC_DPRAM

This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

powerpc: ppc4xx: remove lwmon5 support

This has not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Remove CONFIG_LWMON5 references.
(Also, remove undefined CONFIG_WD_MAX_RATE while I am here.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stefan Roese <sr@denx.de>

mmc: fsl_esdhc: Add adapter card type identification support

Add adapter card type identification support by reading
FPGA STAT_PRES1 register SDHC Card ID[0:2] bits. To use this function,
define CONFIG_FSL_ESDHC_ADAPTER_IDENT.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
[York Sun: resolve conflicts in README.fsl-esdhc]
Reviewed-by: York Sun <yorksun@freescale.com>

powerpc: 74xx_7xx: remove 74xx_7xx cpu support

All the 74xx_7xx boards are still non-generic boards:
P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2

Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Nye Liu <nyet@zumanetworks.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>

mpc8xx: remove lwmon board support

This board is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>

powerpc: Use generic global_data

Move powerpc over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: arm: Move sdhc_clk into arch_global_data

This is used by both powerpc and arm, but I think it still qualifies as
architecture-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move kbd_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move wdt_last to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move fpga_state to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove console_addr from global data

This does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arm: Move uart_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move dp_alloc_base, dp_alloc_top to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move arbiter fields to arch_global_data

Move arbiter_event_attributes and arbiter_event_address into
arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move reset_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc8220 clocks to arch_global_data

Move these fields into arch_global_data and tidy up. The bExtUart field
does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc512x clocks to arch_global_data

Move ips_clk and csb_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_tlb_cams to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move CONFIG_QE to arch_global_data

Move the quantative easing fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move lbc_clk and cpu to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Update for bsc9132qds.c, b4860qds.c]
Signed-off-by: Tom Rini <trini@ti.com>

ppc: Move mpc83xx clock fields to arch_global_data

Move al mpc83xx fields into arch_global_data and tidy up. Also indent
the nested #ifdef for clarity.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move clock fields to arch_global_data

Move vco_out, cpm_clk, scc_clk, brg_clk into arch_global_data and tidy
up. Leave pci_clk on its own since this should really depend only on
CONFIG_PCI and not any particular chip type.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove extra pci_clk fields from global_data

PPC has several of these fields, selected by chip type, although only one
is ever compiled in.

Instead, use a single field. It would be nice if this could be selected
by CONFIG_PCI, but some chips (e.g. mpc5xxx) use pci_clk even when
CONFIG_PCI is not enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move brg_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add architecture-specific global data

We plan to move architecture-specific data into a separate structure so
that we can make the rest of it common.

As a first step, create struct arch_global_data to hold these fields.
Initially it is empty.

This patch applies to all archs at once. I can split it if this is really
a pain.

Signed-off-by: Simon Glass <sjg@chromium.org>

mpc83xx: add support for mpc8309

This processor, though very similar to other members of the
PowerQUICC II Pro family (namely 8308, 8360 and 832x), provides
yet another feature set than any supported sibling.

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

powerpc: Change bi_baudrate and global data baudrate to int

These don't need to be longs, so change them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>

global_data: unify global flag defines

All the global flag defines are the same across all arches. So unify them
in one place, and add a simple way for arches to extend for their needs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

POST: add post_log_res field for post results in global data

The current post_log_word in global data is currently split into 2x
16 bits: half for the test start, half for the test success.
Since we alredy have more than 16 POST tests defined and more could
be defined, this may result in an overflow and the post_output_backlog
would not work for the tests defined further of these 16 positions.

An additional field is added to global data so that we can now support up
to 32 (depending of architecture) tests. The post_log_word is only used
to record the start of the test and the new field post_log_res for the
test success (or failure). The post_output_backlog is for this change
also adapted.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

console: Implement pre-console buffer

Allow redirection of console output prior to console initialisation to a
temporary buffer.

To enable this functionality, the board (or arch) must define:
- CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer
- CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer
- CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)

The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes
Any earlier characters are silently dropped.

ppc4xx: Add DLVision-10G board support

Board support for the Guntermann & Drunck DLVision-10G.
Adds support for multiple FPGAs per board for gdsys 405ep
architecture.
Adds support for dual link osd hardware for gdsys 405ep.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool. In the result, all definitions of this value can be
deleted from the board config files. We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>

New implementation for internal handling of environment variables.

Motivation:

* Old environment code used a pessimizing implementation:
- variable lookup used linear search => slow
- changed/added variables were added at the end, i. e. most
frequently used variables had the slowest access times => slow
- each setenv() would calculate the CRC32 checksum over the whole
environment block => slow
* "redundant" envrionment was locked down to two copies
* No easy way to implement features like "reset to factory defaults",
or to select one out of several pre-defined (previously saved) sets
of environment settings ("profiles")
* No easy way to import or export environment settings

======================================================================

API Changes:

- Variable names starting with '#' are no longer allowed

I didn't find any such variable names being used; it is highly
recommended to follow standard conventions and start variable names
with an alphanumeric character

- "printenv" will now print a backslash at the end of all but the last
lines of a multi-line variable value.

Multi-line variables have never been formally defined, allthough
there is no reason not to use them. Now we define rules how to deal
with them, allowing for import and export.

- Function forceenv() and the related code in saveenv() was removed.
At the moment this is causing build problems for the only user of
this code (schmoogie - which has no entry in MAINTAINERS); may be
fixed later by implementing the "env set -f" feature.

Inconsistencies:

- "printenv" will '\\'-escape the '\n' in multi-line variables, while
"printenv var" will not do that.

======================================================================

Advantages:

- "printenv" output much better readable (sorted)
- faster!
- extendable (additional variable properties can be added)
- new, powerful features like "factory reset" or easy switching
between several different environment settings ("profiles")

Disadvantages:

- Image size grows by typically 5...7 KiB (might shrink a bit again on
systems with redundant environment with a following patch series)

======================================================================

Implemented:

- env command with subcommands:

- env print [arg ...]

same as "printenv": print environment

- env set [-f] name [arg ...]

same as "setenv": set (and delete) environment variables

["-f" - force setting even for read-only variables - not
implemented yet.]

- end delete [-f] name

not implemented yet

["-f" - force delete even for read-only variables]

- env save

same as "saveenv": save environment

- env export [-t | -b | -c] addr [size]

export internal representation (hash table) in formats usable for
persistent storage or processing:

-t: export as text format; if size is given, data will be
padded with '\0' bytes; if not, one terminating '\0'
will be added (which is included in the "filesize"
setting so you can for exmple copy this to flash and
keep the termination).
-b: export as binary format (name=value pairs separated by
'\0', list end marked by double "\0\0")
-c: export as checksum protected environment format as
used for example by "saveenv" command
addr: memory address where environment gets stored
size: size of output buffer

With "-c" and size is NOT given, then the export command will
format the data as currently used for the persistent storage,
i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
prepend a valid CRC32 checksum and, in case of resundant
environment, a "current" redundancy flag. If size is given, this
value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
checksum and redundancy flag will be inserted.

With "-b" and "-t", always only the real data (including a
terminating '\0' byte) will be written; here the optional size
argument will be used to make sure not to overflow the user
provided buffer; the command will abort if the size is not
sufficient. Any remainign space will be '\0' padded.

On successful return, the variable "filesize" will be set.
Note that filesize includes the trailing/terminating '\0'
byte(s).

Usage szenario: create a text snapshot/backup of the current
settings:

=> env export -t 100000
=> era ${backup_addr} +${filesize}
=> cp.b 100000 ${backup_addr} ${filesize}

Re-import this snapshot, deleting all other settings:

=> env import -d -t ${backup_addr}

- env import [-d] [-t | -b | -c] addr [size]

import external format (text or binary) into hash table,
optionally deleting existing values:

-d: delete existing environment before importing;
otherwise overwrite / append to existion definitions
-t: assume text format; either "size" must be given or the
text data must be '\0' terminated
-b: assume binary format ('\0' separated, "\0\0" terminated)
-c: assume checksum protected environment format
addr: memory address to read from
size: length of input data; if missing, proper '\0'
termination is mandatory

- env default -f

reset default environment: drop all environment settings and load
default environment

- env ask name [message] [size]

same as "askenv": ask for environment variable

- env edit name

same as "editenv": edit environment variable

- env run

same as "run": run commands in an environment variable

======================================================================

TODO:

- drop default env as implemented now; provide a text file based
initialization instead (eventually using several text files to
incrementally build it from common blocks) and a tool to convert it
into a binary blob / object file.

- It would be nice if we could add wildcard support for environment
variables; this is needed for variable name auto-completion,
but it would also be nice to be able to say "printenv ip*" or
"printenv *addr*"

- Some boards don't link any more due to the grown code size:
DU405, canyonlands, sequoia, socrates.

=> cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Stefan Roese <sr@denx.de>,
Heiko Schocher <hs@denx.de>

- Dropping forceenv() causes build problems on schmoogie

=> cc: Sergey Kubushyn <ksi@koi8.net>

- Build tested on PPC and ARM only; runtime tested with NOR and NAND
flash only => needs testing!!

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Cc: Stefan Roese <sr@denx.de>,
Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kubushyn <ksi@koi8.net>

Make getenv() work before relocation.

So far, getenv() would work before relocation is most cases, even
though it was not intended to be used that way. When switching to a
hash table based implementation, this would break a number of boards.

For convenience, we make getenv() check if it's running before
relocation and, if so, use getenv_f() internally.

Note that this is limited to simple cases, as we use a small static
buffer (32 bytes) in the global data for this purpose.

For this reason, it is also not a good idea to convert all current
uses of getenv_f() into getenv() - some of the existing use cases need
to be able to deal with longer variable values, so getenv_f() is still
needed and recommended for use before relocation.

Signed-off-by: Wolfgang Denk <wd@denx.de>

mpc8308: support for Freescale MPC8308 cpu

This patch adds basic support for Freescale MPC8308 CPU. Serial ports,
NOR flash and integrated Ethernet controllers are supported.
PCI Express is also supported. eSDHC, NAND and USB may work but aren't
tested (using ULPI PHY requires additional patch).

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

powerpc: remove support for kmtergr1 and MPC8309

The kmtegr1 board is out of maintenance and can be removed. As it is the
only board in the tree using MPC8309 the support for this CPU is dropped
completely.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>

powerpc: Remove unused MPC8540/60ADS code

Remove some code, primarily CPM2 related, that is now unused since the
removal of MPC8540/60ADS.

Fixes 3913191c8a6b ("powerpc: mpc8540ads: mpc8560ads: Drop support for MPC8540/60ADS")
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

ppc: Remove MPC8315ERDB board

This board has not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM. Remove it. As this is the last
ARCH_MPC8315 platform, remove that support as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Don't use relative include for config.h in global_data.h

As there is an arch/powerpc/include/asm/config.h file using "" to get
config.h here can lead to using that rather than include/config.h. This
in turn can lead to a mismatch in the size of gd.

Cc: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>

Drop global data sdhc_adapter for powerpc

The sdhc_adapter of global data has not been used, and we
do not have to use it as global data even we may need it
in the future.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add global variable sdhc_per_clk for arm/powerpc

The QorIQ eSDHC controller supports two reference clocks. They are
platform clock and periperhal clock. The global variable sdhc_clk
has already been used for platform clock.
This patch is to add another global variable sdhc_per_clk for
periperhal clock, which provides higher frequency and is required
to be used for SD UHS and eMMC HS200/HS400 speed modes.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

mpc83xx: Introduce ARCH_MPC837X

Replace CONFIG_MPC837x with a proper CONFIG_ARCH_MPC837X Kconfig option.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC836*

Replace CONFIG_MPC836* with proper CONFIG_ARCH_MPC836* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC834*

Replace CONFIG_MPC834* with proper CONFIG_ARCH_MPC834* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC831*

Replace CONFIG_MPC833* with proper CONFIG_ARCH_MPC833* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC830*

Replace CONFIG_MPC830* with proper CONFIG_ARCH_MPC830* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

clk: Add MPC83xx clock driver

Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: mpc8xx: Change CONFIG_8xx to CONFIG_MPC8xx

CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x

There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc: Drop CONFIG_SYS_ALLOC_DPRAM

This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

powerpc: ppc4xx: remove lwmon5 support

This has not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Remove CONFIG_LWMON5 references.
(Also, remove undefined CONFIG_WD_MAX_RATE while I am here.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stefan Roese <sr@denx.de>

mmc: fsl_esdhc: Add adapter card type identification support

Add adapter card type identification support by reading
FPGA STAT_PRES1 register SDHC Card ID[0:2] bits. To use this function,
define CONFIG_FSL_ESDHC_ADAPTER_IDENT.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
[York Sun: resolve conflicts in README.fsl-esdhc]
Reviewed-by: York Sun <yorksun@freescale.com>

powerpc: 74xx_7xx: remove 74xx_7xx cpu support

All the 74xx_7xx boards are still non-generic boards:
P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2

Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Nye Liu <nyet@zumanetworks.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>

mpc8xx: remove lwmon board support

This board is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>

powerpc: Use generic global_data

Move powerpc over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: arm: Move sdhc_clk into arch_global_data

This is used by both powerpc and arm, but I think it still qualifies as
architecture-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move kbd_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move wdt_last to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move fpga_state to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove console_addr from global data

This does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arm: Move uart_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move dp_alloc_base, dp_alloc_top to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move arbiter fields to arch_global_data

Move arbiter_event_attributes and arbiter_event_address into
arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move reset_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc8220 clocks to arch_global_data

Move these fields into arch_global_data and tidy up. The bExtUart field
does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc512x clocks to arch_global_data

Move ips_clk and csb_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_tlb_cams to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move CONFIG_QE to arch_global_data

Move the quantative easing fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move lbc_clk and cpu to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Update for bsc9132qds.c, b4860qds.c]
Signed-off-by: Tom Rini <trini@ti.com>

ppc: Move mpc83xx clock fields to arch_global_data

Move al mpc83xx fields into arch_global_data and tidy up. Also indent
the nested #ifdef for clarity.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move clock fields to arch_global_data

Move vco_out, cpm_clk, scc_clk, brg_clk into arch_global_data and tidy
up. Leave pci_clk on its own since this should really depend only on
CONFIG_PCI and not any particular chip type.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove extra pci_clk fields from global_data

PPC has several of these fields, selected by chip type, although only one
is ever compiled in.

Instead, use a single field. It would be nice if this could be selected
by CONFIG_PCI, but some chips (e.g. mpc5xxx) use pci_clk even when
CONFIG_PCI is not enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move brg_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add architecture-specific global data

We plan to move architecture-specific data into a separate structure so
that we can make the rest of it common.

As a first step, create struct arch_global_data to hold these fields.
Initially it is empty.

This patch applies to all archs at once. I can split it if this is really
a pain.

Signed-off-by: Simon Glass <sjg@chromium.org>

mpc83xx: add support for mpc8309

This processor, though very similar to other members of the
PowerQUICC II Pro family (namely 8308, 8360 and 832x), provides
yet another feature set than any supported sibling.

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

powerpc: Change bi_baudrate and global data baudrate to int

These don't need to be longs, so change them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>

global_data: unify global flag defines

All the global flag defines are the same across all arches. So unify them
in one place, and add a simple way for arches to extend for their needs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

POST: add post_log_res field for post results in global data

The current post_log_word in global data is currently split into 2x
16 bits: half for the test start, half for the test success.
Since we alredy have more than 16 POST tests defined and more could
be defined, this may result in an overflow and the post_output_backlog
would not work for the tests defined further of these 16 positions.

An additional field is added to global data so that we can now support up
to 32 (depending of architecture) tests. The post_log_word is only used
to record the start of the test and the new field post_log_res for the
test success (or failure). The post_output_backlog is for this change
also adapted.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

console: Implement pre-console buffer

Allow redirection of console output prior to console initialisation to a
temporary buffer.

To enable this functionality, the board (or arch) must define:
- CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer
- CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer
- CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)

The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes
Any earlier characters are silently dropped.

ppc4xx: Add DLVision-10G board support

Board support for the Guntermann & Drunck DLVision-10G.
Adds support for multiple FPGAs per board for gdsys 405ep
architecture.
Adds support for dual link osd hardware for gdsys 405ep.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool. In the result, all definitions of this value can be
deleted from the board config files. We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>

New implementation for internal handling of environment variables.

Motivation:

* Old environment code used a pessimizing implementation:
- variable lookup used linear search => slow
- changed/added variables were added at the end, i. e. most
frequently used variables had the slowest access times => slow
- each setenv() would calculate the CRC32 checksum over the whole
environment block => slow
* "redundant" envrionment was locked down to two copies
* No easy way to implement features like "reset to factory defaults",
or to select one out of several pre-defined (previously saved) sets
of environment settings ("profiles")
* No easy way to import or export environment settings

======================================================================

API Changes:

- Variable names starting with '#' are no longer allowed

I didn't find any such variable names being used; it is highly
recommended to follow standard conventions and start variable names
with an alphanumeric character

- "printenv" will now print a backslash at the end of all but the last
lines of a multi-line variable value.

Multi-line variables have never been formally defined, allthough
there is no reason not to use them. Now we define rules how to deal
with them, allowing for import and export.

- Function forceenv() and the related code in saveenv() was removed.
At the moment this is causing build problems for the only user of
this code (schmoogie - which has no entry in MAINTAINERS); may be
fixed later by implementing the "env set -f" feature.

Inconsistencies:

- "printenv" will '\\'-escape the '\n' in multi-line variables, while
"printenv var" will not do that.

======================================================================

Advantages:

- "printenv" output much better readable (sorted)
- faster!
- extendable (additional variable properties can be added)
- new, powerful features like "factory reset" or easy switching
between several different environment settings ("profiles")

Disadvantages:

- Image size grows by typically 5...7 KiB (might shrink a bit again on
systems with redundant environment with a following patch series)

======================================================================

Implemented:

- env command with subcommands:

- env print [arg ...]

same as "printenv": print environment

- env set [-f] name [arg ...]

same as "setenv": set (and delete) environment variables

["-f" - force setting even for read-only variables - not
implemented yet.]

- end delete [-f] name

not implemented yet

["-f" - force delete even for read-only variables]

- env save

same as "saveenv": save environment

- env export [-t | -b | -c] addr [size]

export internal representation (hash table) in formats usable for
persistent storage or processing:

-t: export as text format; if size is given, data will be
padded with '\0' bytes; if not, one terminating '\0'
will be added (which is included in the "filesize"
setting so you can for exmple copy this to flash and
keep the termination).
-b: export as binary format (name=value pairs separated by
'\0', list end marked by double "\0\0")
-c: export as checksum protected environment format as
used for example by "saveenv" command
addr: memory address where environment gets stored
size: size of output buffer

With "-c" and size is NOT given, then the export command will
format the data as currently used for the persistent storage,
i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
prepend a valid CRC32 checksum and, in case of resundant
environment, a "current" redundancy flag. If size is given, this
value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
checksum and redundancy flag will be inserted.

With "-b" and "-t", always only the real data (including a
terminating '\0' byte) will be written; here the optional size
argument will be used to make sure not to overflow the user
provided buffer; the command will abort if the size is not
sufficient. Any remainign space will be '\0' padded.

On successful return, the variable "filesize" will be set.
Note that filesize includes the trailing/terminating '\0'
byte(s).

Usage szenario: create a text snapshot/backup of the current
settings:

=> env export -t 100000
=> era ${backup_addr} +${filesize}
=> cp.b 100000 ${backup_addr} ${filesize}

Re-import this snapshot, deleting all other settings:

=> env import -d -t ${backup_addr}

- env import [-d] [-t | -b | -c] addr [size]

import external format (text or binary) into hash table,
optionally deleting existing values:

-d: delete existing environment before importing;
otherwise overwrite / append to existion definitions
-t: assume text format; either "size" must be given or the
text data must be '\0' terminated
-b: assume binary format ('\0' separated, "\0\0" terminated)
-c: assume checksum protected environment format
addr: memory address to read from
size: length of input data; if missing, proper '\0'
termination is mandatory

- env default -f

reset default environment: drop all environment settings and load
default environment

- env ask name [message] [size]

same as "askenv": ask for environment variable

- env edit name

same as "editenv": edit environment variable

- env run

same as "run": run commands in an environment variable

======================================================================

TODO:

- drop default env as implemented now; provide a text file based
initialization instead (eventually using several text files to
incrementally build it from common blocks) and a tool to convert it
into a binary blob / object file.

- It would be nice if we could add wildcard support for environment
variables; this is needed for variable name auto-completion,
but it would also be nice to be able to say "printenv ip*" or
"printenv *addr*"

- Some boards don't link any more due to the grown code size:
DU405, canyonlands, sequoia, socrates.

=> cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Stefan Roese <sr@denx.de>,
Heiko Schocher <hs@denx.de>

- Dropping forceenv() causes build problems on schmoogie

=> cc: Sergey Kubushyn <ksi@koi8.net>

- Build tested on PPC and ARM only; runtime tested with NOR and NAND
flash only => needs testing!!

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Cc: Stefan Roese <sr@denx.de>,
Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kubushyn <ksi@koi8.net>

Make getenv() work before relocation.

So far, getenv() would work before relocation is most cases, even
though it was not intended to be used that way. When switching to a
hash table based implementation, this would break a number of boards.

For convenience, we make getenv() check if it's running before
relocation and, if so, use getenv_f() internally.

Note that this is limited to simple cases, as we use a small static
buffer (32 bytes) in the global data for this purpose.

For this reason, it is also not a good idea to convert all current
uses of getenv_f() into getenv() - some of the existing use cases need
to be able to deal with longer variable values, so getenv_f() is still
needed and recommended for use before relocation.

Signed-off-by: Wolfgang Denk <wd@denx.de>

mpc8308: support for Freescale MPC8308 cpu

This patch adds basic support for Freescale MPC8308 CPU. Serial ports,
NOR flash and integrated Ethernet controllers are supported.
PCI Express is also supported. eSDHC, NAND and USB may work but aren't
tested (using ULPI PHY requires additional patch).

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

powerpc: Remove unused MPC8540/60ADS code

Remove some code, primarily CPM2 related, that is now unused since the
removal of MPC8540/60ADS.

Fixes 3913191c8a6b ("powerpc: mpc8540ads: mpc8560ads: Drop support for MPC8540/60ADS")
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

ppc: Remove MPC8315ERDB board

This board has not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM. Remove it. As this is the last
ARCH_MPC8315 platform, remove that support as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Don't use relative include for config.h in global_data.h

As there is an arch/powerpc/include/asm/config.h file using "" to get
config.h here can lead to using that rather than include/config.h. This
in turn can lead to a mismatch in the size of gd.

Cc: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>

Drop global data sdhc_adapter for powerpc

The sdhc_adapter of global data has not been used, and we
do not have to use it as global data even we may need it
in the future.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add global variable sdhc_per_clk for arm/powerpc

The QorIQ eSDHC controller supports two reference clocks. They are
platform clock and periperhal clock. The global variable sdhc_clk
has already been used for platform clock.
This patch is to add another global variable sdhc_per_clk for
periperhal clock, which provides higher frequency and is required
to be used for SD UHS and eMMC HS200/HS400 speed modes.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

mpc83xx: Introduce ARCH_MPC837X

Replace CONFIG_MPC837x with a proper CONFIG_ARCH_MPC837X Kconfig option.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC836*

Replace CONFIG_MPC836* with proper CONFIG_ARCH_MPC836* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC834*

Replace CONFIG_MPC834* with proper CONFIG_ARCH_MPC834* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC831*

Replace CONFIG_MPC833* with proper CONFIG_ARCH_MPC833* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC830*

Replace CONFIG_MPC830* with proper CONFIG_ARCH_MPC830* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

clk: Add MPC83xx clock driver

Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: mpc8xx: Change CONFIG_8xx to CONFIG_MPC8xx

CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x

There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc: Drop CONFIG_SYS_ALLOC_DPRAM

This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

powerpc: ppc4xx: remove lwmon5 support

This has not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Remove CONFIG_LWMON5 references.
(Also, remove undefined CONFIG_WD_MAX_RATE while I am here.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stefan Roese <sr@denx.de>

mmc: fsl_esdhc: Add adapter card type identification support

Add adapter card type identification support by reading
FPGA STAT_PRES1 register SDHC Card ID[0:2] bits. To use this function,
define CONFIG_FSL_ESDHC_ADAPTER_IDENT.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
[York Sun: resolve conflicts in README.fsl-esdhc]
Reviewed-by: York Sun <yorksun@freescale.com>

powerpc: 74xx_7xx: remove 74xx_7xx cpu support

All the 74xx_7xx boards are still non-generic boards:
P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2

Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Nye Liu <nyet@zumanetworks.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>

mpc8xx: remove lwmon board support

This board is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>

powerpc: Use generic global_data

Move powerpc over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: arm: Move sdhc_clk into arch_global_data

This is used by both powerpc and arm, but I think it still qualifies as
architecture-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move kbd_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move wdt_last to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move fpga_state to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove console_addr from global data

This does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arm: Move uart_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move dp_alloc_base, dp_alloc_top to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move arbiter fields to arch_global_data

Move arbiter_event_attributes and arbiter_event_address into
arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move reset_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc8220 clocks to arch_global_data

Move these fields into arch_global_data and tidy up. The bExtUart field
does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc512x clocks to arch_global_data

Move ips_clk and csb_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_tlb_cams to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move CONFIG_QE to arch_global_data

Move the quantative easing fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move lbc_clk and cpu to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Update for bsc9132qds.c, b4860qds.c]
Signed-off-by: Tom Rini <trini@ti.com>

ppc: Move mpc83xx clock fields to arch_global_data

Move al mpc83xx fields into arch_global_data and tidy up. Also indent
the nested #ifdef for clarity.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move clock fields to arch_global_data

Move vco_out, cpm_clk, scc_clk, brg_clk into arch_global_data and tidy
up. Leave pci_clk on its own since this should really depend only on
CONFIG_PCI and not any particular chip type.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove extra pci_clk fields from global_data

PPC has several of these fields, selected by chip type, although only one
is ever compiled in.

Instead, use a single field. It would be nice if this could be selected
by CONFIG_PCI, but some chips (e.g. mpc5xxx) use pci_clk even when
CONFIG_PCI is not enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move brg_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add architecture-specific global data

We plan to move architecture-specific data into a separate structure so
that we can make the rest of it common.

As a first step, create struct arch_global_data to hold these fields.
Initially it is empty.

This patch applies to all archs at once. I can split it if this is really
a pain.

Signed-off-by: Simon Glass <sjg@chromium.org>

mpc83xx: add support for mpc8309

This processor, though very similar to other members of the
PowerQUICC II Pro family (namely 8308, 8360 and 832x), provides
yet another feature set than any supported sibling.

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

powerpc: Change bi_baudrate and global data baudrate to int

These don't need to be longs, so change them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>

global_data: unify global flag defines

All the global flag defines are the same across all arches. So unify them
in one place, and add a simple way for arches to extend for their needs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

POST: add post_log_res field for post results in global data

The current post_log_word in global data is currently split into 2x
16 bits: half for the test start, half for the test success.
Since we alredy have more than 16 POST tests defined and more could
be defined, this may result in an overflow and the post_output_backlog
would not work for the tests defined further of these 16 positions.

An additional field is added to global data so that we can now support up
to 32 (depending of architecture) tests. The post_log_word is only used
to record the start of the test and the new field post_log_res for the
test success (or failure). The post_output_backlog is for this change
also adapted.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

console: Implement pre-console buffer

Allow redirection of console output prior to console initialisation to a
temporary buffer.

To enable this functionality, the board (or arch) must define:
- CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer
- CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer
- CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)

The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes
Any earlier characters are silently dropped.

ppc4xx: Add DLVision-10G board support

Board support for the Guntermann & Drunck DLVision-10G.
Adds support for multiple FPGAs per board for gdsys 405ep
architecture.
Adds support for dual link osd hardware for gdsys 405ep.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool. In the result, all definitions of this value can be
deleted from the board config files. We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>

New implementation for internal handling of environment variables.

Motivation:

* Old environment code used a pessimizing implementation:
- variable lookup used linear search => slow
- changed/added variables were added at the end, i. e. most
frequently used variables had the slowest access times => slow
- each setenv() would calculate the CRC32 checksum over the whole
environment block => slow
* "redundant" envrionment was locked down to two copies
* No easy way to implement features like "reset to factory defaults",
or to select one out of several pre-defined (previously saved) sets
of environment settings ("profiles")
* No easy way to import or export environment settings

======================================================================

API Changes:

- Variable names starting with '#' are no longer allowed

I didn't find any such variable names being used; it is highly
recommended to follow standard conventions and start variable names
with an alphanumeric character

- "printenv" will now print a backslash at the end of all but the last
lines of a multi-line variable value.

Multi-line variables have never been formally defined, allthough
there is no reason not to use them. Now we define rules how to deal
with them, allowing for import and export.

- Function forceenv() and the related code in saveenv() was removed.
At the moment this is causing build problems for the only user of
this code (schmoogie - which has no entry in MAINTAINERS); may be
fixed later by implementing the "env set -f" feature.

Inconsistencies:

- "printenv" will '\\'-escape the '\n' in multi-line variables, while
"printenv var" will not do that.

======================================================================

Advantages:

- "printenv" output much better readable (sorted)
- faster!
- extendable (additional variable properties can be added)
- new, powerful features like "factory reset" or easy switching
between several different environment settings ("profiles")

Disadvantages:

- Image size grows by typically 5...7 KiB (might shrink a bit again on
systems with redundant environment with a following patch series)

======================================================================

Implemented:

- env command with subcommands:

- env print [arg ...]

same as "printenv": print environment

- env set [-f] name [arg ...]

same as "setenv": set (and delete) environment variables

["-f" - force setting even for read-only variables - not
implemented yet.]

- end delete [-f] name

not implemented yet

["-f" - force delete even for read-only variables]

- env save

same as "saveenv": save environment

- env export [-t | -b | -c] addr [size]

export internal representation (hash table) in formats usable for
persistent storage or processing:

-t: export as text format; if size is given, data will be
padded with '\0' bytes; if not, one terminating '\0'
will be added (which is included in the "filesize"
setting so you can for exmple copy this to flash and
keep the termination).
-b: export as binary format (name=value pairs separated by
'\0', list end marked by double "\0\0")
-c: export as checksum protected environment format as
used for example by "saveenv" command
addr: memory address where environment gets stored
size: size of output buffer

With "-c" and size is NOT given, then the export command will
format the data as currently used for the persistent storage,
i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
prepend a valid CRC32 checksum and, in case of resundant
environment, a "current" redundancy flag. If size is given, this
value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
checksum and redundancy flag will be inserted.

With "-b" and "-t", always only the real data (including a
terminating '\0' byte) will be written; here the optional size
argument will be used to make sure not to overflow the user
provided buffer; the command will abort if the size is not
sufficient. Any remainign space will be '\0' padded.

On successful return, the variable "filesize" will be set.
Note that filesize includes the trailing/terminating '\0'
byte(s).

Usage szenario: create a text snapshot/backup of the current
settings:

=> env export -t 100000
=> era ${backup_addr} +${filesize}
=> cp.b 100000 ${backup_addr} ${filesize}

Re-import this snapshot, deleting all other settings:

=> env import -d -t ${backup_addr}

- env import [-d] [-t | -b | -c] addr [size]

import external format (text or binary) into hash table,
optionally deleting existing values:

-d: delete existing environment before importing;
otherwise overwrite / append to existion definitions
-t: assume text format; either "size" must be given or the
text data must be '\0' terminated
-b: assume binary format ('\0' separated, "\0\0" terminated)
-c: assume checksum protected environment format
addr: memory address to read from
size: length of input data; if missing, proper '\0'
termination is mandatory

- env default -f

reset default environment: drop all environment settings and load
default environment

- env ask name [message] [size]

same as "askenv": ask for environment variable

- env edit name

same as "editenv": edit environment variable

- env run

same as "run": run commands in an environment variable

======================================================================

TODO:

- drop default env as implemented now; provide a text file based
initialization instead (eventually using several text files to
incrementally build it from common blocks) and a tool to convert it
into a binary blob / object file.

- It would be nice if we could add wildcard support for environment
variables; this is needed for variable name auto-completion,
but it would also be nice to be able to say "printenv ip*" or
"printenv *addr*"

- Some boards don't link any more due to the grown code size:
DU405, canyonlands, sequoia, socrates.

=> cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Stefan Roese <sr@denx.de>,
Heiko Schocher <hs@denx.de>

- Dropping forceenv() causes build problems on schmoogie

=> cc: Sergey Kubushyn <ksi@koi8.net>

- Build tested on PPC and ARM only; runtime tested with NOR and NAND
flash only => needs testing!!

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Cc: Stefan Roese <sr@denx.de>,
Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kubushyn <ksi@koi8.net>

Make getenv() work before relocation.

So far, getenv() would work before relocation is most cases, even
though it was not intended to be used that way. When switching to a
hash table based implementation, this would break a number of boards.

For convenience, we make getenv() check if it's running before
relocation and, if so, use getenv_f() internally.

Note that this is limited to simple cases, as we use a small static
buffer (32 bytes) in the global data for this purpose.

For this reason, it is also not a good idea to convert all current
uses of getenv_f() into getenv() - some of the existing use cases need
to be able to deal with longer variable values, so getenv_f() is still
needed and recommended for use before relocation.

Signed-off-by: Wolfgang Denk <wd@denx.de>

mpc8308: support for Freescale MPC8308 cpu

This patch adds basic support for Freescale MPC8308 CPU. Serial ports,
NOR flash and integrated Ethernet controllers are supported.
PCI Express is also supported. eSDHC, NAND and USB may work but aren't
tested (using ULPI PHY requires additional patch).

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

ppc: Remove MPC8315ERDB board

This board has not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM. Remove it. As this is the last
ARCH_MPC8315 platform, remove that support as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: Don't use relative include for config.h in global_data.h

As there is an arch/powerpc/include/asm/config.h file using "" to get
config.h here can lead to using that rather than include/config.h. This
in turn can lead to a mismatch in the size of gd.

Cc: Matt Merhar <mattmerhar@protonmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>

Drop global data sdhc_adapter for powerpc

The sdhc_adapter of global data has not been used, and we
do not have to use it as global data even we may need it
in the future.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

Add global variable sdhc_per_clk for arm/powerpc

The QorIQ eSDHC controller supports two reference clocks. They are
platform clock and periperhal clock. The global variable sdhc_clk
has already been used for platform clock.
This patch is to add another global variable sdhc_per_clk for
periperhal clock, which provides higher frequency and is required
to be used for SD UHS and eMMC HS200/HS400 speed modes.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

mpc83xx: Introduce ARCH_MPC837X

Replace CONFIG_MPC837x with a proper CONFIG_ARCH_MPC837X Kconfig option.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC836*

Replace CONFIG_MPC836* with proper CONFIG_ARCH_MPC836* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC834*

Replace CONFIG_MPC834* with proper CONFIG_ARCH_MPC834* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC831*

Replace CONFIG_MPC833* with proper CONFIG_ARCH_MPC833* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

mpc83xx: Introduce ARCH_MPC830*

Replace CONFIG_MPC830* with proper CONFIG_ARCH_MPC830* Kconfig options.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

clk: Add MPC83xx clock driver

Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

powerpc: mpc8xx: Change CONFIG_8xx to CONFIG_MPC8xx

CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x

There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>

powerpc: Drop CONFIG_SYS_ALLOC_DPRAM

This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

powerpc: ppc4xx: remove lwmon5 support

This has not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Remove CONFIG_LWMON5 references.
(Also, remove undefined CONFIG_WD_MAX_RATE while I am here.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stefan Roese <sr@denx.de>

mmc: fsl_esdhc: Add adapter card type identification support

Add adapter card type identification support by reading
FPGA STAT_PRES1 register SDHC Card ID[0:2] bits. To use this function,
define CONFIG_FSL_ESDHC_ADAPTER_IDENT.

Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
[York Sun: resolve conflicts in README.fsl-esdhc]
Reviewed-by: York Sun <yorksun@freescale.com>

powerpc: 74xx_7xx: remove 74xx_7xx cpu support

All the 74xx_7xx boards are still non-generic boards:
P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2

Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Nye Liu <nyet@zumanetworks.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>

mpc8xx: remove lwmon board support

This board is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Power: remove support for Freescale MPC8220

The Freescale MPC8220 Power Architecture processors have long reached
EOL; Freescale does not even list these any more on their web site.

Remove the code to avoid wasting maitaining efforts on dead stuff.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>

powerpc: Use generic global_data

Move powerpc over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: arm: Move sdhc_clk into arch_global_data

This is used by both powerpc and arm, but I think it still qualifies as
architecture-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move kbd_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move wdt_last to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move fpga_state to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Remove console_addr from global data

This does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arm: Move uart_clk to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move dp_alloc_base, dp_alloc_top to arch_global_data

Move these fields into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move arbiter fields to arch_global_data

Move arbiter_event_attributes and arbiter_event_address into
arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move reset_status to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc8220 clocks to arch_global_data

Move these fields into arch_global_data and tidy up. The bExtUart field
does not appear to be used, so punt it.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc512x clocks to arch_global_data

Move ips_clk and csb_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_tlb_cams to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>