diff options
Diffstat (limited to 'env/sf.c')
| -rw-r--r-- | env/sf.c | 34 |
1 files changed, 34 insertions, 0 deletions
@@ -28,9 +28,18 @@ #define INITENV #endif +#define OFFSET_INVALID (~(u32)0) + #ifdef CONFIG_ENV_OFFSET_REDUND +#define ENV_OFFSET_REDUND CONFIG_ENV_OFFSET_REDUND + static ulong env_offset = CONFIG_ENV_OFFSET; static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND; + +#else + +#define ENV_OFFSET_REDUND OFFSET_INVALID + #endif /* CONFIG_ENV_OFFSET_REDUND */ DECLARE_GLOBAL_DATA_PTR; @@ -288,6 +297,30 @@ out: } #endif +static int env_sf_erase(void) +{ + int ret; + env_t env; + + ret = setup_flash_device(); + if (ret) + return ret; + + memset(&env, 0, sizeof(env_t)); + ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, &env); + if (ret) + goto done; + + if (ENV_OFFSET_REDUND != OFFSET_INVALID) + ret = spi_flash_write(env_flash, ENV_OFFSET_REDUND, CONFIG_ENV_SIZE, &env); + +done: + spi_flash_free(env_flash); + env_flash = NULL; + + return ret; +} + #if CONFIG_ENV_ADDR != 0x0 __weak void *env_sf_get_env_addr(void) { @@ -415,5 +448,6 @@ U_BOOT_ENV_LOCATION(sf) = { ENV_NAME("SPIFlash") .load = env_sf_load, .save = ENV_SAVE_PTR(env_sf_save), + .erase = ENV_ERASE_PTR(env_sf_erase), .init = env_sf_init, }; |