diff options
| -rw-r--r-- | env/Kconfig | 14 | ||||
| -rw-r--r-- | env/sf.c | 10 |
2 files changed, 22 insertions, 2 deletions
diff --git a/env/Kconfig b/env/Kconfig index b473d7c..844c312 100644 --- a/env/Kconfig +++ b/env/Kconfig @@ -324,6 +324,20 @@ config ENV_IS_IN_SPI_FLASH during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be aligned to an erase sector boundary. +config ENV_SECT_SIZE_AUTO + bool "Use automatically detected sector size" + depends on ENV_IS_IN_SPI_FLASH + help + Some boards exist in multiple variants, with different + flashes having different sector sizes. In such cases, you + can select this option to make U-Boot use the actual sector + size when figuring out how much to erase, which can thus be + more efficient on the flashes with smaller erase size. Since + the environment must always be aligned on a sector boundary, + CONFIG_ENV_OFFSET must be aligned to the largest of the + different sector sizes, and CONFIG_ENV_SECT_SIZE should be + set to that value. + config USE_ENV_SPI_BUS bool "SPI flash bus for environment" depends on ENV_IS_IN_SPI_FLASH @@ -72,7 +72,7 @@ static int env_sf_save(void) { env_t env_new; char *saved_buffer = NULL, flag = ENV_REDUND_OBSOLETE; - u32 saved_size, saved_offset, sector; + u32 saved_size = 0, saved_offset = 0, sector; u32 sect_size = CONFIG_ENV_SECT_SIZE; int ret; @@ -80,6 +80,9 @@ static int env_sf_save(void) if (ret) return ret; + if (IS_ENABLED(CONFIG_ENV_SECT_SIZE_AUTO)) + sect_size = env_flash->mtd.erasesize; + ret = env_export(&env_new); if (ret) return -EIO; @@ -187,7 +190,7 @@ out: #else static int env_sf_save(void) { - u32 saved_size, saved_offset, sector; + u32 saved_size = 0, saved_offset = 0, sector; u32 sect_size = CONFIG_ENV_SECT_SIZE; char *saved_buffer = NULL; int ret = 1; @@ -197,6 +200,9 @@ static int env_sf_save(void) if (ret) return ret; + if (IS_ENABLED(CONFIG_ENV_SECT_SIZE_AUTO)) + sect_size = env_flash->mtd.erasesize; + /* Is the sector larger than the env (i.e. embedded) */ if (sect_size > CONFIG_ENV_SIZE) { saved_size = sect_size - CONFIG_ENV_SIZE; |