[U-Boot] [PATCH 0/8] Add get_cpu_id for STM32 SoCs

[Patrice CHOTARD]

+Christophe Priouzeau who is the requester/developper of this feature


On 01/31/2018 07:22 PM, Vikas Manocha wrote:
> Hi Patrice,
> 
> On 01/31/2018 08:08 AM, patrice.chotard at st.com wrote:
>> From: Patrice Chotard <patrice.chotard at st.com>
>>
>> This series allows to get the cpu id of STM32 SoCs and to set
>> the environment variable "soc_name" with the corresponding SoC name.
>>
>> This will be useful in some development environment to retrieve files
>> correspondig to SoC family.
> 
> can you provide some example ? We have the device tree compatible string to distinguish board & soc.

We will add STM32 SoCs support in buildroot environment
Our objective is to propose a flexible solution to boot linux
kernel from sdcard.

As for STM32F4, STM32F7 and STM32H7 linux defconfig is slightly 
different (specific CONFIG_DRAM_BASE and CONFIG_DRAM_SIZE) we can't use 
the same zImage for all these SoCs.

To simplify, we will embed all dtb/zImage in the sdcard and using the 
soc_name environment variable to select the correct zImage.

Patrice


> 
> Cheers,
> Vikas
> 
>>
>> Patrice Chotard (8):
>>    mach-stm32: Add get_cpu_id support
>>    mach-stm32: Move BOARD_LATE_INIT flag to mach-stm32 Kconfig
>>    board: stm32f429-discovery: Add set_env_soc_name() in
>>      board_late_init()
>>    board: stm32h743-evaluation: Add set_env_soc_name() in
>>      board_late_init()
>>    board: stm32f743-discovery: Add set_env_soc_name() in
>>      board_late_init()
>>    board: stm32f469-discovery: Add set_env_soc_name() in
>>      board_late_init()
>>    board: stm32f469-discovery: Add set_env_soc_name() in
>>      board_late_init()
>>    board: stm32f429-evaluation: Add set_env_soc_name() in
>>      board_late_init()
>>
>>   arch/arm/include/asm/arch-stm32f4/stm32.h          |  2 +
>>   arch/arm/include/asm/arch-stm32f7/stm32.h          |  2 +
>>   arch/arm/include/asm/arch-stm32h7/stm32.h          |  4 ++
>>   arch/arm/mach-stm32/Kconfig                        |  3 ++
>>   arch/arm/mach-stm32/soc.c                          | 46 ++++++++++++++++++++++
>>   board/st/stm32f429-discovery/stm32f429-discovery.c |  7 ++++
>>   .../st/stm32f429-evaluation/stm32f429-evaluation.c |  7 ++++
>>   board/st/stm32f469-discovery/stm32f469-discovery.c |  7 ++++
>>   board/st/stm32f746-disco/stm32f746-disco.c         |  2 +
>>   board/st/stm32h743-disco/stm32h743-disco.c         |  4 ++
>>   board/st/stm32h743-eval/stm32h743-eval.c           |  4 ++
>>   include/configs/stm32f746-disco.h                  |  1 -
>>   include/configs/stm32h743-disco.h                  |  1 -
>>   include/configs/stm32h743-eval.h                   |  1 -
>>   14 files changed, 88 insertions(+), 3 deletions(-)
>>