[U-Boot] [PATCH v4] mx6: add support of multi-processor command

[Stefano Babic]

Hi Gabriel,

On 25/06/2014 04:32, Gabriel Huau wrote:
> This allows u-boot to load different OS or Bare Metal application on the
> different cores of the i.MX6DQ.
> For example: we can run Android on cpu0 and a RT OS like QNX/FreeRTOS on cpu1.
> 
> Signed-off-by: Gabriel Huau <contact at huau-gabriel.fr>
> ---
> Changes for v2:
> 	- Add a commit log message to explain the purpose of this patch
> Changes for v3:
> 	- Remove unnecessary check for unsigned values when they are negative
> Changes for v4:
> 	- Add CONFIG_MP to the common mx6 configuration
> 	- Get the number of CPUs dynamically instead of using a macro
> 
>  arch/arm/cpu/armv7/mx6/Makefile           |   1 +
>  arch/arm/cpu/armv7/mx6/mp.c               | 134 ++++++++++++++++++++++++++++++
>  arch/arm/cpu/armv7/mx6/soc.c              |   6 ++
>  arch/arm/include/asm/arch-mx6/imx-regs.h  |  13 +++
>  arch/arm/include/asm/arch-mx6/sys_proto.h |   2 +
>  include/configs/mx6_common.h              |   2 +
>  6 files changed, 158 insertions(+)
>  create mode 100644 arch/arm/cpu/armv7/mx6/mp.c
> 

Your patch breaks some i.MX6 boards:

Configuring for udoo_quad - Board: udoo, Options:
IMX_CONFIG=board/udoo/udoo.cfg,MX6Q,DDR_MB=1024
common/board_f.c:45:20: fatal error: asm/mp.h: No such file or directory
make[1]: *** [common/board_f.o] Error 1

In fact, board_f.c includes asm/mp.h if CONFIG_MP is set. Can you take a
look ? Thanks !

Best regards,
Stefano Babic


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