From 37151225f4d791204a75173eec64ebfdaf2cbdec Mon Sep 17 00:00:00 2001 From: Daisuke Nojiri Date: Mon, 21 Oct 2019 10:07:48 -0700 Subject: EFS2: Implement Early Firmware Selection ver.2 EFS v1 allowed Chromeboxes to verify RW without AP. EFS v2 will bring the benefts to Chromebooks, which are: - Reduce RO dependency and presence. Allow more code to be updated in the fields. - Remove jumptag and workarounds needed for late sysjump. Major imporvements over v1 are: - No A/B slot required. - No signature in RW or public key in RO. - Rollback-attack protection. - Verifies only RW being used instead of whole RW section. For battery-equipped devices, additional benefts are: - Immediate boot on drained battery. - Support recovery mode regardless of battery condition. - Faster charge in S5/G3. EC-Cr50 communication is based on the shared UART (go/ec-cr50-comm). EFS2 is documented in go/ec-efs2. Signed-off-by: Daisuke Nojiri BUG=chromium:1045217,chromium:141143112 BRANCH=none TEST=Boot Helios in NORMAL/NO_BOOT/NO_BOOT_RECOVERY/RECOVERY mode. TEST=Wake up EC from hibernate. TEST=Make EC assert PACKET_MODE to wake up Cr50 from deepsleep. Change-Id: I98a4fe1ecc59d106810a75daec3c424f953ff880 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2015357 Reviewed-by: Daisuke Nojiri Commit-Queue: Daisuke Nojiri Tested-by: Daisuke Nojiri Auto-Submit: Daisuke Nojiri --- board/puff/board.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'board/puff/board.h') diff --git a/board/puff/board.h b/board/puff/board.h index 7d0fdbaefc..0c69c58eef 100644 --- a/board/puff/board.h +++ b/board/puff/board.h @@ -264,7 +264,7 @@ enum temp_sensor_id { void board_reset_pd_mcu(void); void board_set_tcpc_power_mode(int port, int mode); void led_alert(int enable); -void led_critical(void); +void show_critical_error(void); #endif /* !__ASSEMBLER__ */ -- cgit v1.2.1