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| author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2017-05-16 00:16:31 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2017-05-29 17:28:52 +0900 |
| commit | f8b8a554633f61c3a3e8dde3236917372edc977f (patch) | |
| tree | e9f94875e99da37ec111d2f2f3d88d7033cc22f0 /common | |
| parent | 6183b29559107650cb38f905e069a93ff9da1d7d (diff) | |
| download | u-boot-f8b8a554633f61c3a3e8dde3236917372edc977f.tar.gz | |
env_mmc: configure environment offsets via device tree
This introduces the ability to override the environment offets from the
device tree by setting the following nodes in '/config':
'u-boot,mmc-env-offset' - overrides CONFIG_ENV_OFFSET
'u-boot,mmc-env-offset-redundant'
- overrides CONFIG_ENV_OFFSET_REDUND
To keep with the previous logic, the CONFIG_* defines still need to
be available and the statically defined values become the defaults,
when the corresponding properties are not set in the device-tree.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/env_mmc.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/common/env_mmc.c b/common/env_mmc.c index a5d14d448c..45d95a1e23 100644 --- a/common/env_mmc.c +++ b/common/env_mmc.c @@ -10,6 +10,7 @@ #include <command.h> #include <environment.h> +#include <fdtdec.h> #include <linux/stddef.h> #include <malloc.h> #include <memalign.h> @@ -36,15 +37,37 @@ DECLARE_GLOBAL_DATA_PTR; #define CONFIG_ENV_OFFSET 0 #endif -__weak int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr) +#if CONFIG_IS_ENABLED(OF_CONTROL) +static inline s64 mmc_offset(int copy) { - s64 offset; + const char *propname = "u-boot,mmc-env-offset"; + s64 defvalue = CONFIG_ENV_OFFSET; - offset = CONFIG_ENV_OFFSET; -#ifdef CONFIG_ENV_OFFSET_REDUND +#if defined(CONFIG_ENV_OFFSET_REDUND) + if (copy) { + propname = "u-boot,mmc-env-offset-redundant"; + defvalue = CONFIG_ENV_OFFSET_REDUND; + } +#endif + + return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue); +} +#else +static inline s64 mmc_offset(int copy) +{ + s64 offset = CONFIG_ENV_OFFSET; + +#if defined(CONFIG_ENV_OFFSET_REDUND) if (copy) offset = CONFIG_ENV_OFFSET_REDUND; #endif + return offset; +} +#endif + +__weak int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr) +{ + s64 offset = mmc_offset(copy); if (offset < 0) offset += mmc->capacity; |