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.
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(-)