arch: Cleanup of __ARM__ checks

* gcc 7.x defines __arm__ and __ARM__ (and others)
* clang defines __arm__ and __arm
* cleanup a few related ifdef vs if macros

Change-Id: I5da4bafac590f6fa3e10e543688001c2449f840d

u-boot/arm: Initial steps to drop target board requirements

loader/u-boot: Use FDT serial info to create uart

* drop my fdt tests
* we have to call fdt parsing code *after* cpu_init (why?)
* pass fdt pointer to all FDT support calls to avoid confusion
once we get into the kernel land
* look for PL011 compatible uart and use it
* Add some saftey checks to serial putc code to avoid null*
* fdt_node_check_compatible returns 0 on success not 1
* fdt_get_device_reg needs to add the SOC base to the result
* fdt_get_device_reg might need to add the second range cell
instead of reg?

u-boot/serial: Only reference pl011 on ARM

* This will likely change once we FDT.

rpi1/rpi2: Use PL011 UART fallback in loader.

* Adjust UART base locations to reflect ARM pref base.
* We have a working haiku_loader_u-boot on Raspberry Pi 2!:q

u-boot: sync console implementation from raspberry port

* VT100 is much more common than VT52 which the u-boot port was
previously using (a legacy of the Atari m68k port)
* Implement serial_getc (again, code is identical to raspberry port...)
so the boot menu can be used over the serial port. The enter key is
recognized, arrows currently aren't.

U-Boot: Factor-out debug UART setup from FDT for kernel use

Typo

U-Boot: fix warnings

U-Boot: initialize the debug UART using FDT hints when possible

* we first try to find 'serial', 'serial0' or 'serial1' in /aliases
* extract the required properties from the found node and use them
* fallback to the hardcoded UART from the board definition header

(cherry picked from my sam460ex branch)

U-Boot: initialize the debug UART using FDT hints when possible

* we first try to find 'serial', 'serial0' or 'serial1' in /aliases
* extract the required properties from the found node and use them
* fallback to the hardcoded UART from the board definition header

Removed the addr_t conversion operators from FixedWidthPointer which makes comparison against NULL work properly.

Changes to kernel_args to make it identical for x86 and x86_64.

* Added a FixedWidthPointer template class which uses 64-bit storage to hold
a pointer. This is used in place of raw pointers in kernel_args.
* Added __attribute__((packed)) to kernel_args and all structures contained
within it. This is necessary due to different alignment behaviour for
32-bit and 64-bit compilation with GCC.
* With these changes, kernel_args will now come out the same size for both
the x86_64 kernel and the loader, excluding the preloaded_image structure
which has not yet been changed.
* Tested both an x86 GCC2 and GCC4 build, no problems caused by these changes.

uart: Fix arm kernel build

* Make kernel use mmu_man's new UART code
* Remove no longer used uart.cpp / uart.h

Attempt to factor out serial stuff

* introduce a DebugUART baseclass,
* rework 8250 and PL011 implementations from kallisti5 to inherit DebutUART,
* each arch should override the IO methods to access registers.
* on ARM registers are 32bit-aligned.
* U-Boot still works for the verdex target.
* rPi still compiles, needs testing.
* Still some more consolidation needed to allow runtime choice of the UART type (as read from FDT blobs for ex.).
* serial.cpp should probably mostly be made generic as well.
* didn't touch x86 or ppc yet.

Fix serial output for U-Boot code

* use a static buffer for allocation, as the heap isn't yet working.

uart: Replace Init calls with Enable/Disable

* Enable/Disable makes more sense and matches
platform loader serial functions.
* Rework PL011 code after finding a PDF covering
the details of it.
* Rename UART global defines in loader to be more
exact about location

arm uart: Convert new uart code to classes

* This makes things a little more flexible and
the interface to use the uarts cleaner.
* May want to make a generic Uart wrapper
class in uart.h / uart.cpp and call drivers
as needed from there.

arm uart: Rename getc/putc to getchar/getchar

* Avoid name collisions
* This uart stuff may work better as a class at
some point, however I didn't want to rock the
u-boot boat *too* much as I don't have the
hardware to test.

arm uart: Complete redesign of ARM uart code

* Add nested function wrappers to allow usage of other
uart drivers depending on board. We may want to use this
on other platforms at some point (haha, maybe)

[ARM]
- cleanup,
- add an uart_debug_port() to avoid using the #define in serial.cpp,
- use board_config defines in uart.c.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32201 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
Stubbed u-boot platform code. Mostly copied from other platforms.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31818 a95241bf-73f2-0310-859d-f6bbb57e9c96

loader/u-boot: Use FDT serial info to create uart

* drop my fdt tests
* we have to call fdt parsing code *after* cpu_init (why?)
* pass fdt pointer to all FDT support calls to avoid confusion
once we get into the kernel land
* look for PL011 compatible uart and use it
* Add some saftey checks to serial putc code to avoid null*
* fdt_node_check_compatible returns 0 on success not 1
* fdt_get_device_reg needs to add the SOC base to the result
* fdt_get_device_reg might need to add the second range cell
instead of reg?

u-boot/serial: Only reference pl011 on ARM

* This will likely change once we FDT.

rpi1/rpi2: Use PL011 UART fallback in loader.

* Adjust UART base locations to reflect ARM pref base.
* We have a working haiku_loader_u-boot on Raspberry Pi 2!:q

u-boot: sync console implementation from raspberry port

* VT100 is much more common than VT52 which the u-boot port was
previously using (a legacy of the Atari m68k port)
* Implement serial_getc (again, code is identical to raspberry port...)
so the boot menu can be used over the serial port. The enter key is
recognized, arrows currently aren't.

U-Boot: Factor-out debug UART setup from FDT for kernel use

Typo

U-Boot: fix warnings

U-Boot: initialize the debug UART using FDT hints when possible

* we first try to find 'serial', 'serial0' or 'serial1' in /aliases
* extract the required properties from the found node and use them
* fallback to the hardcoded UART from the board definition header

(cherry picked from my sam460ex branch)

U-Boot: initialize the debug UART using FDT hints when possible

* we first try to find 'serial', 'serial0' or 'serial1' in /aliases
* extract the required properties from the found node and use them
* fallback to the hardcoded UART from the board definition header

Removed the addr_t conversion operators from FixedWidthPointer which makes comparison against NULL work properly.

Changes to kernel_args to make it identical for x86 and x86_64.

* Added a FixedWidthPointer template class which uses 64-bit storage to hold
a pointer. This is used in place of raw pointers in kernel_args.
* Added __attribute__((packed)) to kernel_args and all structures contained
within it. This is necessary due to different alignment behaviour for
32-bit and 64-bit compilation with GCC.
* With these changes, kernel_args will now come out the same size for both
the x86_64 kernel and the loader, excluding the preloaded_image structure
which has not yet been changed.
* Tested both an x86 GCC2 and GCC4 build, no problems caused by these changes.

uart: Fix arm kernel build

* Make kernel use mmu_man's new UART code
* Remove no longer used uart.cpp / uart.h

Attempt to factor out serial stuff

* introduce a DebugUART baseclass,
* rework 8250 and PL011 implementations from kallisti5 to inherit DebutUART,
* each arch should override the IO methods to access registers.
* on ARM registers are 32bit-aligned.
* U-Boot still works for the verdex target.
* rPi still compiles, needs testing.
* Still some more consolidation needed to allow runtime choice of the UART type (as read from FDT blobs for ex.).
* serial.cpp should probably mostly be made generic as well.
* didn't touch x86 or ppc yet.

Fix serial output for U-Boot code

* use a static buffer for allocation, as the heap isn't yet working.

uart: Replace Init calls with Enable/Disable

* Enable/Disable makes more sense and matches
platform loader serial functions.
* Rework PL011 code after finding a PDF covering
the details of it.
* Rename UART global defines in loader to be more
exact about location

arm uart: Convert new uart code to classes

* This makes things a little more flexible and
the interface to use the uarts cleaner.
* May want to make a generic Uart wrapper
class in uart.h / uart.cpp and call drivers
as needed from there.

arm uart: Rename getc/putc to getchar/getchar

* Avoid name collisions
* This uart stuff may work better as a class at
some point, however I didn't want to rock the
u-boot boat *too* much as I don't have the
hardware to test.

arm uart: Complete redesign of ARM uart code

* Add nested function wrappers to allow usage of other
uart drivers depending on board. We may want to use this
on other platforms at some point (haha, maybe)

[ARM]
- cleanup,
- add an uart_debug_port() to avoid using the #define in serial.cpp,
- use board_config defines in uart.c.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32201 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
Stubbed u-boot platform code. Mostly copied from other platforms.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31818 a95241bf-73f2-0310-859d-f6bbb57e9c96