diff options
| -rw-r--r-- | chip/g/flash.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/chip/g/flash.c b/chip/g/flash.c index f9ce5d580e..ab00745be9 100644 --- a/chip/g/flash.c +++ b/chip/g/flash.c @@ -467,3 +467,64 @@ void flash_close_ro_window(void) { GWRITE_FIELD(GLOBALSEC, FLASH_REGION6_CTRL, WR_EN, 0); } + +#ifdef CR50_DEV + +static int command_erase_flash_info(int argc, char **argv) +{ + uint32_t *preserved_manufacture_state; + const size_t manuf_word_count = FLASH_INFO_MANUFACTURE_STATE_SIZE / + sizeof(uint32_t); + int i; + int rv = EC_ERROR_BUSY; + + if (shared_mem_acquire(FLASH_INFO_MANUFACTURE_STATE_SIZE, + (char **)&preserved_manufacture_state) != + EC_SUCCESS) { + ccprintf("Failed to allocate memory for manufacture state!\n"); + return rv; + } + + /* Read the entire info1. */ + p = (uint32_t *)info1; + for (i = 0; i < (sizeof(*info1) / sizeof(*p)); i++) { + if (flash_physical_info_read_word(i * sizeof(*p), p + i) != + EC_SUCCESS) { + ccprintf("Failed to read word %d!\n", i); + goto exit; + } + } + + mutex_lock(&flash_mtx); + + flash_info_write_enable(); + + rv = do_flash_op(OP_ERASE_BLOCK, 1, 0, 512); + + mutex_unlock(&flash_mtx); + + if (rv != EC_SUCCESS) { + ccprintf("Failed to erase info space!\n"); + goto exit; + } + + if (flash_info_physical_write + (FLASH_INFO_MANUFACTURE_STATE_OFFSET, + FLASH_INFO_MANUFACTURE_STATE_SIZE, + (char *)preserved_manufacture_state) != EC_SUCCESS) { + ccprintf("Failed to restore manufacture state!\n"); + goto exit; + } + + rv = EC_SUCCESS; + exit: + always_memset(preserved_manufacture_state, 0, + FLASH_INFO_MANUFACTURE_STATE_SIZE); + shared_mem_release(preserved_manufacture_state); + flash_info_write_disable(); + return rv; +} +DECLARE_CONSOLE_COMMAND(eraseflashinfo, command_erase_flash_info, + "", + "Erase INFO1 flash space"); +#endif |