Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>

arm: socfpga: Remove <common.h> and add needed includes

Remove <common.h> from all mach-socfpga files and when needed add missing
include files directly.

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

global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

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

common: Drop asm/global_data.h from common header

Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

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

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

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

common: Drop init.h from common header

Move this uncommon header out of the common header.

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

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

arm: socfpga: Remove <common.h> and add needed includes

Remove <common.h> from all mach-socfpga files and when needed add missing
include files directly.

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

global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

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

common: Drop asm/global_data.h from common header

Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

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

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

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

common: Drop init.h from common header

Move this uncommon header out of the common header.

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

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

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

common: Drop asm/global_data.h from common header

Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

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

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

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

common: Drop init.h from common header

Move this uncommon header out of the common header.

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

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

common: Drop asm/global_data.h from common header

Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

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

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

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

common: Drop init.h from common header

Move this uncommon header out of the common header.

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

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

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

common: Drop init.h from common header

Move this uncommon header out of the common header.

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

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

common: Move reset_cpu() to the CPU header

Move this function out of common.h and into a relevant header file.

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

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

arm: socfpga: Convert system manager from struct to defines

Convert system manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get system manager base address from DT node instead of
using #define.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: Convert reset manager from struct to defines

Convert reset manager for Gen5, Arria 10 and Stratix 10 from struct
to defines.

Change to get reset manager base address from DT node instead of using
#define.

spl_early_init() initializes the DT setup. So, move spl_early_init() to
beginning of function and before get base address from DT.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Add ArriaV ST/SX ID

Add new FPGA ID for ArriaV ST/D3 or SX/B3 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Purge pending transactions upon enabling bridges on Gen5

On Gen5, when the FPGA is loaded and there was some prior interaction
between the HPS and the FPGA via bridges (e.g. Linux was running and
using some of the IPs in the FPGA) followed by warm reset, it has been
observed that there might be outstanding unfinished transactions. This
leads to an obscure misbehavior of the bridge.

When the bridge is enabled again in U-Boot and there are outstanding
transactions, a read from within the bridge address range would return
a result of the previous read instead. Example:
=> bridge enable ; md 0xff200000 1
ff200000: 1234abcd
=> bridge enable ; md 0xff200010 1
ff200010: 5678dcba <------- this is in fact a value which is stored in
a memory at 0xff200000
=> bridge enable ; md 0xff200000 1
ff200000: 90effe09 <------- this is in fact a value which is stored in
a memory at 0xff200010
and so it continues. Issuing a write does lock the system up completely.

This patch opens the FPGA bridges in 'bridge enable' command, the tears
them down again, and then opens them again. This allows these outstanding
transactions to complete and makes this misbehavior go away.

However, it is not entirely clear whether this is the correct solution.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Actually put bridges into reset on Gen5 in bridge disable

On Gen5, the 'bridge disable' command write 0x0 to brgmodrst register,
which releases all bridges from reset, instead of putting all bridges
into reset. Fix this by inverting the mask and actually putting the
bridges into reset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

env: Move env_set() to env.h

Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

ARM: socfpga: Remove socfpga_sdram_apply_static_cfg()

The usage of socfpga_sdram_apply_static_cfg() seems rather dubious and
is confirmed to lead to a rare system hang when enabling bridges. This
patch removes the socfpga_sdram_apply_static_cfg() altogether, because
it's use seems unjustified and problematic.

The socfpga_sdram_apply_static_cfg() triggers write to SDRAM staticcfg
register to set the applycfg bit, which according to old vendor U-Boot
sources can only be written when there is no traffic between the SDRAM
controller and the rest of the system. Empirical measurements confirm
this, setting the applycfg bit when there is traffic between the SDRAM
controller and CPU leads to the SDRAM controller accesses being blocked
shortly after.

Altera originally solved this by moving the entire code which sets the
staticcfg register to OCRAM [1]. The commit message claims that the
applycfg bit needs to be set after write to fpgaportrst register. This
is however inverted by Altera shortly after in [2], where the order
becomes the exact opposite of what commit message [1] claims to be the
required order. The explanation points to a possible problem in AMP
use-case, where the FPGA might be sending transactions through the F2S
bridge.

However, the AMP is only the tip of the iceberg here. Any of the other
L2, L3 or L4 masters can trigger transactions to the SDRAM. It becomes
rather non-trivial to guarantee there are no transactions to the SDRAM
controller.

The SoCFPGA SDRAM driver always writes the applycfg bit in SPL. Thus,
writing the applycfg again in bridge enable code seems redundant and
can presumably be dropped.

[1] https://github.com/altera-opensource/u-boot-socfpga/commit/75905816ec95b0ccd515700b922628d7aa9036f8
[2] https://github.com/altera-opensource/u-boot-socfpga/commit/8ba6986b04a91d23c7adf529186b34c8d2967ad5

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

ARM: socfpga: Add support for selecting bridges in bridge command

Add optional "mask" argument to the SoCFPGA bridge command, to select
which bridges should be enabled/disabled. This allows the user to avoid
enabling bridges which are not connected into the FPGA fabric. Default
behavior is to enable/disable all bridges.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

arm: socfpga: implement proper peripheral reset

This commit removes ad-hoc reset handling for peripheral resets from SPL
for socfpga gen5.

This is done because as U-Boot drivers support reset handling by now.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: remove hacked ETH RST handling

The 'dwmac_socfpga' ETH driver can now get the MACs out of reset
via the socfpga reset driver and can set PHY mode via syscon.

This means we can now remove the ad-hoc code to do this from
arch/arm/mach-socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

Enable 'fpga' command in u-boot. User will be able to use the FPGA
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>

arm: socfpga: fix SPL booting from fpga OnChip RAM

This patch prevents disabling the FPGA bridges when
SPL or U-Boot is executed from FPGA onchip RAM.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

arm: socfpga: gen5: combine some init code for SPL and U-Boot

Some of the code for low level system initialization in SPL's
board_init_f() and U-Boot's arch_early_init_r() is the same,
so let's combine it into a single function called from both.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arm: socfpga: misc: Move bridge command to misc common

Move bridge command to misc common driver, in preparation to used by
other platforms.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

ARM: socfpga: Repair A10 EMAC reset handling

The EMAC reset and PHY mode configuration was never working on the
Arria10 SoC, fix this. This patch pulls out the common code into
misc.c and passes the SoC-specific function call in as a function
pointer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

ARM: socfpga: Zap CONFIG_SOCFPGA_VIRTUAL_TARGET

This was never used, is not used anywhere and is just in the way
by adding annoying ifdeffery. Get rid of it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>

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>

libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h

and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arm: socfpga: Guard commands with CONFIG_SPL_BUILD tests

In order for these commands to not be included in SPL we need to guard
compilation with CONFIG_SPL_BUILD checks. Reorganize some sections of
code slightly in order to avoid new warnings and mark the command
functions as static as they should have been before.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: socfpga: fix duplicate const specifier warning

GCC 7.1 warns:
duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

env: Rename setenv() to env_set()

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

arm: socfpga: Restructure misc driver

Restructure misc driver in the preparation to support A10.
Move the Gen5 specific code to gen5 file.

Change all uint32_t_to u32.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>