diff options
Diffstat (limited to 'chip/stm32/config-stm32l431.h')
| -rw-r--r-- | chip/stm32/config-stm32l431.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/chip/stm32/config-stm32l431.h b/chip/stm32/config-stm32l431.h index fb2eff77ba..7021bc2ce8 100644 --- a/chip/stm32/config-stm32l431.h +++ b/chip/stm32/config-stm32l431.h @@ -23,3 +23,55 @@ /* Number of IRQ vectors on the NVIC */ #define CONFIG_IRQ_COUNT 82 + +/* + * STM32L431 flash layout: + * - RO image starts at the beginning of flash: sector 0 ~ 61 + * - PSTATE immediately follows the RO image: sector 62 + * - RW image starts at 0x1f800: sector 63 + * - Protected region consists of the RO image + PSTATE: sector 0 ~ 62 + * - Unprotected region consists of second half of RW image + * + * PSTATE(2KB) + * | + * (126KB) v (130KB) + * |<-----Protected Region------>|<------Unprotected Region----->| + * |<--------RO image--------->| |<----------RW image----------->| + * 0 (124KB) ^ ^ + * | | + * | 63(2KB sector) + * | + * 62 + * + */ + + + +/* The EC uses one sector to emulate persistent state */ +#define CONFIG_FLASH_PSTATE +#define CONFIG_FW_PSTATE_SIZE CONFIG_FLASH_BANK_SIZE +#define CONFIG_FW_PSTATE_OFF (62 * CONFIG_FLASH_BANK_SIZE) + +#define CONFIG_RO_MEM_OFF 0 +#define CONFIG_RO_STORAGE_OFF 0 +#define CONFIG_RO_SIZE (62 * CONFIG_FLASH_BANK_SIZE) +#define CONFIG_RW_MEM_OFF (CONFIG_RO_MEM_OFF + CONFIG_RO_SIZE + \ + CONFIG_FW_PSTATE_SIZE) +#define CONFIG_RW_STORAGE_OFF 0 +#define CONFIG_RW_SIZE (CONFIG_FLASH_SIZE_BYTES - CONFIG_RW_MEM_OFF - \ + CONFIG_RW_STORAGE_OFF) + +#define CONFIG_EC_PROTECTED_STORAGE_OFF 0 +#define CONFIG_EC_PROTECTED_STORAGE_SIZE CONFIG_RW_MEM_OFF +#define CONFIG_EC_WRITABLE_STORAGE_OFF CONFIG_RW_MEM_OFF +#define CONFIG_EC_WRITABLE_STORAGE_SIZE (CONFIG_FLASH_SIZE_BYTES - \ + CONFIG_EC_WRITABLE_STORAGE_OFF) + +#define CONFIG_WP_STORAGE_OFF CONFIG_EC_PROTECTED_STORAGE_OFF +#define CONFIG_WP_STORAGE_SIZE CONFIG_EC_PROTECTED_STORAGE_SIZE + +/* We map each write protect sector to a bank */ +#define PHYSICAL_BANKS 128 +#define WP_BANK_COUNT 63 +#define PSTATE_BANK 62 +#define PSTATE_BANK_COUNT 1 |