Gabe Black (gabeblack@chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3718
-gerrit
commit d75876e2f25ff54a07acf71119908dbf7d58cb31 Author: Hung-Te Lin hungte@chromium.org Date: Fri Jun 28 17:27:17 2013 +0800
armv7/exynos: Prevent unexpected reboots in resume.
In resume path, if memory setup takes too long without setting PS_HOLD, EC watch dog may power off or reboot the system. To prevent that, we should enable PS_HOLD in same timing as cold boot - right before starting memory setup.
Change-Id: I5c294fa7ae015f8cff57b1fd81e5b80902647b15 Signed-off-by: Hung-Te Lin hungte@chromium.org Signed-off-by: Gabe Black gabeblack@chromium.org --- src/mainboard/google/pit/romstage.c | 11 ++++++----- src/mainboard/google/snow/romstage.c | 11 ++++++----- 2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/src/mainboard/google/pit/romstage.c b/src/mainboard/google/pit/romstage.c index 7ba66a4..30c8aeb 100644 --- a/src/mainboard/google/pit/romstage.c +++ b/src/mainboard/google/pit/romstage.c @@ -74,13 +74,17 @@ struct pmic_write pmic_writes[] = MAX77802_BUCK_TYPE1_IGNORE_PWRREQ } };
-static void setup_power(void) +static void setup_power(int is_resume) { int error = 0; int i;
power_init();
+ if (is_resume) { + return; + } + /* Initialize I2C bus to configure PMIC. */ exynos_pinmux_i2c4(); i2c_init(4, I2C_4_SPEED, 0x00); @@ -264,10 +268,7 @@ void main(void)
console_init();
- if (!is_resume) { - setup_power(); - } - + setup_power(is_resume); setup_memory(&mem_timings, is_resume);
primitive_mem_test(); diff --git a/src/mainboard/google/snow/romstage.c b/src/mainboard/google/snow/romstage.c index 8c01536..7442f7a 100644 --- a/src/mainboard/google/snow/romstage.c +++ b/src/mainboard/google/snow/romstage.c @@ -43,12 +43,16 @@ #define PMIC_BUS 0 #define MMC0_GPIO_PIN (58)
-static void setup_power(void) +static void setup_power(int is_resume) { int error = 0;
power_init();
+ if (is_resume) { + return; + } + /* Initialize I2C bus to configure PMIC. */ exynos_pinmux_i2c0(); i2c_init(0, I2C_0_SPEED, 0x00); @@ -171,10 +175,7 @@ void main(void)
console_init();
- if (!is_resume) { - setup_power(); - } - + setup_power(is_resume); setup_memory(mem, is_resume);
if (is_resume) {