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env: Remove all dependencies for SYS_REDUNDAND_ENVIRONMENT

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CONFIG_SYS_REDUNDAND_ENVIRONMENT is changing in env_internal.h how u-boot
works with variables. struct environment_s has one byte flags property
which also affects ENV_SIZE macro.

I have reached the case where CONFIG_ENV_IS_NOWHERE is default setup
but custom scripts can be designed in a way that u-boot is asked to
import/export variables from/to file which can be in certain format.
That's why also for this configuration make sense to enable
CONFIG_SYS_REDUNDAND_ENVIRONMENT because it depends on environment file
format.

The patch is removing dependency on this configuration to support selecting
environment file format without any specific dependency where variables are
stored.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Michal Simek 2021-01-13 10:25:50 +01:00
parent a672b9871b
commit 4e3fc5efeb
1 changed files with 3 additions and 2 deletions
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5
env/Kconfig vendored
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@ -411,13 +411,14 @@ config ENV_IS_IN_UBI
config SYS_REDUNDAND_ENVIRONMENT
bool "Enable redundant environment support"
depends on ENV_IS_IN_EEPROM || ENV_IS_IN_FLASH || ENV_IS_IN_MMC || \
ENV_IS_IN_NAND || ENV_IS_IN_SPI_FLASH || ENV_IS_IN_UBI
help
Normally, the environemt is stored in a single location. By
selecting this option, you can then define where to hold a redundant
copy of the environment data, so that there is a valid backup copy in
case there is a power failure during a "saveenv" operation.
Also this config changes the binary environment structure handling
which is used by env import/export commands which are independent of
storing variables to redundant location on a non volatile device.
config ENV_FAT_INTERFACE
string "Name of the block device for the environment"