diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/main.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/common/main.c b/common/main.c index 00bc19df4a..8f9c48e4af 100644 --- a/common/main.c +++ b/common/main.c @@ -78,6 +78,21 @@ test_mockable int main(void) flash_pre_init(); #endif +#if defined(CONFIG_CASE_CLOSED_DEBUG) + /* + * If the device is both soft (EC flash protection active) and hard + * (WP hardware signal active) write protected then we assert + * PD_NO_DEBUG, preventing the EC from interfering with the AP's + * access to the SPI flash. The PD_NO_DEBUG signal is latched in + * hardware, so changing this GPIO later has no effect. + */ +#define FLASH_PROTECT_MASK (EC_FLASH_PROTECT_RO_NOW | \ + EC_FLASH_PROTECT_GPIO_ASSERTED) + + if ((flash_get_protect() & FLASH_PROTECT_MASK) == FLASH_PROTECT_MASK) + gpio_set_level(GPIO_PD_DISABLE_DEBUG, 1); +#endif + /* Set the CPU clocks / PLLs. System is now running at full speed. */ clock_init(); |