Hi Vikas
On 02/02/2018 06:20 PM, Vikas Manocha wrote:
Hi Patrice,
On 02/02/2018 12:22 AM, Patrice CHOTARD wrote:
+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@st.com wrote:
From: Patrice Chotard patrice.chotard@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.
soc name is already part of configuration (SYS_SOC). It would be simpler and less expensive (for both cpu & memory) to use it. In this patchset, 56 Bytes(currently, which will increase with more SOCs support) of lookup table are becoming part of text apart from the additional code.
Ok i got your point, i will rework this series
Thanks
Patrice
Cheers, Vikas
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(-)