From 4b4a02b327103c92fa4a7d9cebc678dbee5826e8 Mon Sep 17 00:00:00 2001
From: Chen-Tsung Hsieh <chentsung@chromium.org>
Date: Wed, 30 Dec 2020 11:35:12 +0800
Subject: flash_ec: add "-U" flags for stm32 chip

Disable the read protection with "-U" to program EC image. Some commands
(e.g. 0x73: Write Unprotect command, 0x44: Extended Erase command) will
return NACK if the read protection is enabled.

BUG=b:151098124
BRANCH=none
TEST=flash_ec --verbose --board=moonball --image moonball.bin

Signed-off-by: Chen-Tsung Hsieh <chentsung@chromium.org>
Change-Id: I7338cd5dd0b1dd29be1f35d5eda3dd938050ba40
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2607024
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
---
 util/flash_ec | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/flash_ec b/util/flash_ec
index c829eca1b0..092bbeaa38 100755
--- a/util/flash_ec
+++ b/util/flash_ec
@@ -1120,7 +1120,7 @@ function flash_stm32() {
 	if [[ -z "${IMG_READ}" ]]; then
 		info "Programming EC firmware image."
 		# Unprotect flash, erase, and write
-		local STM32MON_COMMAND="${STM32MON} ${STM32MON_OPT} -u -e -w"
+		local STM32MON_COMMAND="${STM32MON} ${STM32MON_OPT} -U -u -e -w"
 		if [[ "${FLAGS_verbose}" == ${FLAGS_TRUE} ]]; then
 			echo "${STM32MON_COMMAND} ${IMG}"
 		fi
-- 
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