void chipset_reset(int is_cold)
{
if (is_cold) {
CPRINTS("EC triggered cold reboot");
power_off();
/* After POWER_GOOD is dropped off,
* the system will be on again
*/
power_request = POWER_REQ_ON;
} else {
CPRINTS("EC triggered warm reboot");
CPRINTS("assert GPIO_PMIC_WARM_RESET_L for %d ms",
PMIC_WARM_RESET_L_HOLD_TIME / MSEC);
set_pmic_warm_reset(1);
usleep(PMIC_WARM_RESET_L_HOLD_TIME);
set_pmic_warm_reset(0);
}
}
static void chipset_turn_off_power_rails(void)
{
/* Release the power on pin, if it was asserted */
set_pmic_pwron(0);
/* Close the pmic power source immediately */
set_pmic_source(0);
/* Keep AP and PMIC in reset the whole time */
set_pmic_warm_reset(1);
}
/**
* Power on the AP
*/
static void power_on(void)
{
int i;
set_pmic_source(1);
usleep(PMIC_SOURCE_STARTUP_TIME);
set_pmic_pwron(1);
/*
* BUG Workaround(crosbug.com/p/31635): usleep hangs in task when using
* big delays.
*/
for (i = 0; i < PMIC_STARTUP_MS; i++)
usleep(1 * MSEC);
set_pmic_warm_reset(0);
}
/**
* Power on the AP
*/
static void power_on(void)
{
int i;
set_pmic_source(1);
usleep(PMIC_SOURCE_STARTUP_TIME);
set_pmic_pwron(1);
/*
* BUG Workaround(crosbug.com/p/31635): usleep hangs in task when using
* big delays.
*/
for (i = 0; i < PMIC_STARTUP_MS; i++)
usleep(1 * MSEC);
/* Reset the PMIC to make sure it's in a known state. */
set_pmic_reset(1);
usleep(PMIC_RESET_HOLD_TIME);
set_pmic_reset(0);
set_pmic_warm_reset(0);
}
