diff options
Diffstat (limited to 'common/ap_ro_integrity_check.c')
| -rw-r--r-- | common/ap_ro_integrity_check.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/common/ap_ro_integrity_check.c b/common/ap_ro_integrity_check.c index f2339ddb86..584c9ca36d 100644 --- a/common/ap_ro_integrity_check.c +++ b/common/ap_ro_integrity_check.c @@ -80,6 +80,19 @@ struct ap_ro_check { static const struct ap_ro_check *p_chk = (const struct ap_ro_check *)AP_RO_DATA_SPACE_ADDR; +/* + * Track if the AP RO hash was validated this boot. Must be cleared every AP + * reset. + */ +static uint8_t validated_ap_ro_boot; + +void ap_ro_device_reset(void) +{ + if (validated_ap_ro_boot) + CPRINTS("%s: clear validated state", __func__); + validated_ap_ro_boot = 0; +} + static int ap_ro_erase_hash(void) { int rv; @@ -289,6 +302,7 @@ int validate_ap_ro(void) } else { ap_ro_add_flash_event(APROF_CHECK_SUCCEEDED); rv = EC_SUCCESS; + validated_ap_ro_boot = 1; CPRINTS("AP RO verification SUCCEEDED!"); } disable_ap_spi_hash_shortcut(); @@ -356,6 +370,7 @@ static int ap_ro_info_cmd(int argc, char **argv) if (rv) return EC_SUCCESS; + ccprintf("boot validated: %s\n", validated_ap_ro_boot ? "yes" : "no"); ccprintf("sha256 hash %ph\n", HEX_BUF(p_chk->payload.digest, sizeof(p_chk->payload.digest))); ccprintf("Covered ranges:\n"); @@ -375,3 +390,29 @@ DECLARE_SAFE_CONSOLE_COMMAND(ap_ro_info, ap_ro_info_cmd, "", "Display AP RO check space" #endif ); + +static enum vendor_cmd_rc vc_get_ap_ro_status(enum vendor_cmd_cc code, + void *buf, size_t input_size, + size_t *response_size) +{ + uint8_t rv = AP_RO_NOT_RUN; + uint8_t *response = buf; + + CPRINTS("Check AP RO status"); + + *response_size = 0; + if (input_size) + return VENDOR_RC_BOGUS_ARGS; + + if (ap_ro_check_unsupported(false)) + rv = AP_RO_UNSUPPORTED; + else if (ec_rst_override()) + rv = AP_RO_FAIL; + else if (validated_ap_ro_boot) + rv = AP_RO_PASS; + + *response_size = 1; + response[0] = rv; + return VENDOR_RC_SUCCESS; +} +DECLARE_VENDOR_COMMAND(VENDOR_CC_GET_AP_RO_STATUS, vc_get_ap_ro_status); |