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env: mmc: add CONFIG_ENV_MMC_USE_DT

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Add a new config CONFIG_ENV_MMC_USE_DT to force configuration of the
U-Boot environment offset with device tree config node.

This patch avoids issues when several CONFIG_ENV_IS_IN_XXX are activated,
the defconfig file uses the same value for CONFIG_ENV_OFFSET or
CONFIG_ENV_OFFSET_REDUND for the several ENV backends (SPI_FLASH, EEPROM
NAND, SATA, MMC).

After this patch a bad offset value is not possible when the selected
partition in device tree is not found.

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 2022-11-10 11:49:01 +01:00 committed by Tom Rini
parent 8566050e24
commit d2103e20a9
2 changed files with 23 additions and 0 deletions
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16
env/Kconfig vendored
View file

@ -244,6 +244,13 @@ config ENV_IS_IN_MMC
This value is also in units of bytes, but must also be aligned to
an MMC sector boundary.
CONFIG_ENV_MMC_USE_DT (optional):
These define forces the configuration by the config node in device
tree with partition name: "u-boot,mmc-env-partition" or with
offset: "u-boot,mmc-env-offset", "u-boot,mmc-env-offset-redundant".
CONFIG_ENV_OFFSET and CONFIG_ENV_OFFSET_REDUND are not used.
config ENV_IS_IN_NAND
bool "Environment in a NAND device"
depends on !CHAIN_OF_TRUST
@ -652,6 +659,15 @@ config SYS_MMC_ENV_PART
partition 0 or the first boot partition, which is 1 or some other defined
partition.
config ENV_MMC_USE_DT
bool "Read partition name and offset in DT"
depends on ENV_IS_IN_MMC && OF_CONTROL
help
Only use the device tree to get the environment location in MMC
device, with partition name or with offset.
The 2 defines CONFIG_ENV_OFFSET, CONFIG_ENV_OFFSET_REDUND
are not used as fallback.
config USE_DEFAULT_ENV_FILE
bool "Create default environment from file"
help

7
env/mmc.c vendored
View file

@ -26,6 +26,12 @@
#define ENV_MMC_INVALID_OFFSET ((s64)-1)
#if defined(CONFIG_ENV_MMC_USE_DT)
/* ENV offset is invalid when not defined in Device Tree */
#define ENV_MMC_OFFSET ENV_MMC_INVALID_OFFSET
#define ENV_MMC_OFFSET_REDUND ENV_MMC_INVALID_OFFSET
#else
/* Default ENV offset when not defined in Device Tree */
#define ENV_MMC_OFFSET CONFIG_ENV_OFFSET
@ -34,6 +40,7 @@
#else
#define ENV_MMC_OFFSET_REDUND ENV_MMC_INVALID_OFFSET
#endif
#endif
DECLARE_GLOBAL_DATA_PTR;