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board: stm32mp1: use CONFIG_SYS_MMC_ENV_DEV when available

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Check whether user has explicitly defined the mmc device to use
in mmc_get_env_dev() with CONFIG_SYS_MMC_ENV_DEV.

On STMicroelectronics boards the used mmc device for environment is
the instance of boot device provided by the ROM code; the mmc instance
is configured by alias in device tree. The used partition is defined in
device tree with u-boot,mmc-env-partition = "ssbl".

This patch allows to override this selection for the support of customer
boards without alias; for example when SDMMC1 is not used and ENV in
mmc0=SDMMC2, user can force the value: CONFIG_SYS_MMC_ENV_DEV = 0.

On STMicroelectronics boards, the current behavior is kept with
CONFIG_SYS_MMC_ENV_DEV = -1.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-03-01 13:17:56 +01:00 committed by Patrice Chotard
parent c45f82bb2e
commit 9f97193616
3 changed files with 9 additions and 1 deletions
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8
board/st/stm32mp1/stm32mp1.c
View file

@ -862,8 +862,14 @@ const char *env_ext4_get_dev_part(void)
int mmc_get_env_dev(void)
{
u32 bootmode = get_bootmode();
u32 bootmode;
if (CONFIG_SYS_MMC_ENV_DEV >= 0)
return CONFIG_SYS_MMC_ENV_DEV;
bootmode = get_bootmode();
/* use boot instance to select the correct mmc device identifier */
return (bootmode & TAMP_BOOT_INSTANCE_MASK) - 1;
}

1
configs/stm32mp15_basic_defconfig
View file

@ -72,6 +72,7 @@ CONFIG_ENV_UBI_PART="UBI"
CONFIG_ENV_UBI_VOLUME="uboot_config"
CONFIG_ENV_UBI_VOLUME_REDUND="uboot_config_r"
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_SYS_MMC_ENV_DEV=-1
# CONFIG_SPL_ENV_IS_NOWHERE is not set
# CONFIG_SPL_ENV_IS_IN_SPI_FLASH is not set
CONFIG_STM32_ADC=y

1
configs/stm32mp15_trusted_defconfig
View file

@ -53,6 +53,7 @@ CONFIG_ENV_UBI_PART="UBI"
CONFIG_ENV_UBI_VOLUME="uboot_config"
CONFIG_ENV_UBI_VOLUME_REDUND="uboot_config_r"
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_SYS_MMC_ENV_DEV=-1
CONFIG_STM32_ADC=y
CONFIG_CLK_SCMI=y
CONFIG_SET_DFU_ALT_INFO=y