diff options
Diffstat (limited to 'common/flash_common.c')
| -rw-r--r-- | common/flash_common.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/common/flash_common.c b/common/flash_common.c index d9834bfea2..16ad911594 100644 --- a/common/flash_common.c +++ b/common/flash_common.c @@ -16,6 +16,14 @@ #include "util.h" #include "vboot_hash.h" +/* + * Contents of erased flash, as a 32-bit value. Most platforms erase flash + * bits to 1. + */ +#ifndef CONFIG_FLASH_ERASED_VALUE32 +#define CONFIG_FLASH_ERASED_VALUE32 (-1U) +#endif + /* Persistent protection state - emulates a SPI status register for flashrom */ struct persist_state { uint8_t version; /* Version of this struct */ @@ -105,8 +113,6 @@ int flash_dataptr(int offset, int size_req, int align, const char **ptrp) return CONFIG_FLASH_SIZE - offset; } -/* crosbug.com/p/13066 - not supported on STM32L */ -#ifndef CHIP_FAMILY_stm32l int flash_is_erased(uint32_t offset, int size) { const uint32_t *ptr; @@ -116,12 +122,11 @@ int flash_is_erased(uint32_t offset, int size) return 0; for (size /= sizeof(uint32_t); size > 0; size -= 4, ptr++) - if (*ptr != -1U) + if (*ptr != CONFIG_FLASH_ERASED_VALUE32) return 0; return 1; } -#endif test_mockable int flash_write(int offset, int size, const char *data) { |