diff options
Diffstat (limited to 'include/flash.h')
| -rw-r--r-- | include/flash.h | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/include/flash.h b/include/flash.h index ec9407d44e..95cafa374d 100644 --- a/include/flash.h +++ b/include/flash.h @@ -143,13 +143,17 @@ int flash_protect_until_reboot(void); /* Higher-level APIs to emulate SPI write protect */ -/* Lock or unlock the persistent write protect settings. Once the write - * protect settings are locked, they will STAY locked until the system is - * cold-booted with the hardware write protect pin disabled. +/** + * Enable write protect for the read-only code. + * + * Once write protect is enabled, it will STAY enabled until the system is + * hard-rebooted with the hardware write protect pin deasserted. If the write + * protect pin is deasserted, the protect setting is ignored, and the entire + * flash will be writable. * - * If called with lock!=0, this will also immediately protect all - * persistently-protected blocks. */ -int flash_lock_protect(int lock); + * @param enable Enable write protection + */ +int flash_enable_protect(int enable); /* Flags for flash_get_protect_lock() */ /* @@ -157,16 +161,22 @@ int flash_lock_protect(int lock); * deasserted at boot time, this simply indicates the state of the lock * setting, and not whether blocks are actually protected. */ -#define FLASH_PROTECT_LOCK_SET 0x01 +#define FLASH_PROTECT_RO_AT_BOOT (1 << 0) /* * Flash protection lock has actually been applied. Read-only firmware is * protected, and flash protection cannot be unlocked. */ -#define FLASH_PROTECT_LOCK_APPLIED 0x02 +#define FLASH_PROTECT_RO_NOW (1 << 1) /* Write protect pin is currently asserted */ -#define FLASH_PROTECT_PIN_ASSERTED 0x04 +#define FLASH_PROTECT_PIN_ASSERTED (1 << 2) +/* Entire flash is protected until reboot */ +#define FLASH_PROTECT_RW_NOW (1 << 3) +/* At least one bank of flash is stuck locked, and cannot be unlocked */ +#define FLASH_PROTECT_STUCK_LOCKED (1 << 4) +/* At least one bank of flash which should be protected is not protected */ +#define FLASH_PROTECT_PARTIAL (1 << 5) /* Return the flash protect lock status. */ -int flash_get_protect_lock(void); +int flash_get_protect(void); #endif /* __CROS_EC_FLASH_H */ |