diff options
Diffstat (limited to 'src/security/vboot/bootmode.c')
| -rw-r--r-- | src/security/vboot/bootmode.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/security/vboot/bootmode.c b/src/security/vboot/bootmode.c index 83baa815c7..2a911cbf10 100644 --- a/src/security/vboot/bootmode.c +++ b/src/security/vboot/bootmode.c @@ -101,14 +101,27 @@ int vboot_recovery_mode_enabled(void) int __weak clear_recovery_mode_switch(void) { - // Weak implementation. Nothing to do. return 0; } -void __weak log_recovery_mode_switch(void) +static void do_clear_recovery_mode_switch(void *unused) { - // Weak implementation. Nothing to do. + if (vboot_get_context()->flags & VB2_CONTEXT_FORCE_RECOVERY_MODE) + clear_recovery_mode_switch(); } +/* + * The recovery mode switch (typically backed by EC) is not cleared until + * BS_WRITE_TABLES for two reasons: + * + * (1) On some platforms, FSP initialization may cause a reboot. Push clearing + * the recovery mode switch until after FSP code runs, so that a manual recovery + * request (three-finger salute) will function correctly under this condition. + * + * (2) To give the implementation of clear_recovery_mode_switch a chance to + * add an event to elog. See the function in chromeec/switches.c. + */ +BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY, + do_clear_recovery_mode_switch, NULL); int __weak get_recovery_mode_retrain_switch(void) { |