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authorAaron Durbin <adurbin@chromium.org>2014-01-09 14:28:05 -0600
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-05-13 21:01:52 +0200
commit9f1a7cffabacdb6022e4579a6229eb5d29e9bcf4 (patch)
tree0610978d63c0689511f1780e6a14fb8c3e2530ed /src/ec/google/chromeec
parentb376ea632f1498174d86fa8f8b78848607492055 (diff)
downloadcoreboot-9f1a7cffabacdb6022e4579a6229eb5d29e9bcf4.tar.xz
chromeec: add function to reboot on unexpected image
It's helpful to have a generic function that will tell the EC to reboot if the EC isn't running a specified image. Add that and implement google_chromeec_early_init() to utilize the new function still maintaing its semantics of if recvoery mode is enabled the EC should be running its RO image. There is a slight change in that no communication is done with the EC if not in recovery mode. BUG=chrome-os-partner:24133 BRANCH=rambi,squawks TEST=Built and boot with recovery request. Noted EC reboot. Change-Id: I22240f6a11231e39c33fd79796a52ec76b119397 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182060 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/5039 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/ec/google/chromeec')
-rw-r--r--src/ec/google/chromeec/ec.c16
-rw-r--r--src/ec/google/chromeec/ec.h3
2 files changed, 14 insertions, 5 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index c57e18bbca..6e7ecdfb36 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -100,8 +100,7 @@ u32 google_chromeec_get_events_b(void)
}
#ifndef __SMM__
-/* Check for recovery mode and ensure EC is in RO */
-void google_chromeec_early_init(void)
+void google_chromeec_check_ec_image(int expected_type)
{
struct chromeec_command cec_cmd;
struct ec_response_get_version cec_resp = {{0}};
@@ -113,9 +112,7 @@ void google_chromeec_early_init(void)
cec_cmd.cmd_size_out = sizeof(cec_resp);
google_chromeec_command(&cec_cmd);
- if (cec_cmd.cmd_code ||
- (recovery_mode_enabled() &&
- (cec_resp.current_image != EC_IMAGE_RO))) {
+ if (cec_cmd.cmd_code || cec_resp.current_image != expected_type) {
struct ec_params_reboot_ec reboot_ec;
/* Reboot the EC and make it come back in RO mode */
reboot_ec.cmd = EC_REBOOT_COLD;
@@ -133,6 +130,15 @@ void google_chromeec_early_init(void)
}
}
+/* Check for recovery mode and ensure EC is in RO */
+void google_chromeec_early_init(void)
+{
+ /* If in recovery ensure EC is running RO firmware. */
+ if (recovery_mode_enabled()) {
+ google_chromeec_check_ec_image(EC_IMAGE_RO);
+ }
+}
+
u16 google_chromeec_get_board_version(void)
{
struct chromeec_command cmd;
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index a037d0147d..d033bab73a 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -36,7 +36,10 @@ int google_ec_running_ro(void);
void google_chromeec_init(void);
#endif
+/* If recovery mode is enabled and EC is not running RO firmware reboot. */
void google_chromeec_early_init(void);
+/* Reboot if EC firmware is not expected type. */
+void google_chromeec_check_ec_image(int expected_type);
uint8_t google_chromeec_calc_checksum(const uint8_t *data, int size);
u16 google_chromeec_get_board_version(void);
u32 google_chromeec_get_events_b(void);