From 4d2640cad072cdfd5772e8c24dac5969611a5822 Mon Sep 17 00:00:00 2001 From: Philipp Tomsich Date: Wed, 15 Feb 2017 12:24:13 +0100 Subject: 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 --- common/env_mmc.c | 31 +++++++++++++++++++++++++++---- 1 file changed, 27 insertions(+), 4 deletions(-) diff --git a/common/env_mmc.c b/common/env_mmc.c index 16f6a17514..ef3dbd1d23 100644 --- a/common/env_mmc.c +++ b/common/env_mmc.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -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) +#ifdef CONFIG_OF_LIBFDT +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; -- cgit v1.2.3