static void check_reset_cause(void)
{
uint32_t status = MEC1322_VBAT_STS;
uint32_t flags = 0;
uint32_t rst_sts = MEC1322_PCR_CHIP_PWR_RST &
(MEC1322_PWR_RST_STS_VCC1 |
MEC1322_PWR_RST_STS_VBAT);
/* Clear the reset causes now that we've read them */
MEC1322_VBAT_STS |= status;
MEC1322_PCR_CHIP_PWR_RST |= rst_sts;
/*
* BIT[6] determine VCC1 reset
*/
if (rst_sts & MEC1322_PWR_RST_STS_VCC1)
flags |= RESET_FLAG_RESET_PIN;
flags |= MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS);
MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS) = 0;
if ((status & MEC1322_VBAT_STS_WDT) && !(flags & (RESET_FLAG_SOFT |
RESET_FLAG_HARD |
RESET_FLAG_HIBERNATE)))
flags |= RESET_FLAG_WATCHDOG;
system_set_reset_flags(flags);
}
void _system_reset(int flags, int wake_from_hibernate)
{
uint32_t save_flags = 0;
/* Disable interrupts to avoid task swaps during reboot */
interrupt_disable();
/* Save current reset reasons if necessary */
if (flags & SYSTEM_RESET_PRESERVE_FLAGS)
save_flags = system_get_reset_flags() | RESET_FLAG_PRESERVED;
if (flags & SYSTEM_RESET_LEAVE_AP_OFF)
save_flags |= RESET_FLAG_AP_OFF;
if (wake_from_hibernate)
save_flags |= RESET_FLAG_HIBERNATE;
else if (flags & SYSTEM_RESET_HARD)
save_flags |= RESET_FLAG_HARD;
else
save_flags |= RESET_FLAG_SOFT;
MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS) = save_flags;
/* Trigger watchdog in 1ms */
MEC1322_WDG_LOAD = 1;
MEC1322_WDG_CTL |= 1;
/* Spin and wait for reboot; should never return */
while (1)
;
}
static void check_reset_cause(void)
{
uint32_t status = MEC1322_VBAT_STS;
uint32_t flags = 0;
/* Clear the reset causes now that we've read them */
MEC1322_VBAT_STS |= status;
if (status & (1 << 7) || check_vcc1_por())
flags |= RESET_FLAG_POWER_ON;
flags |= MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS);
MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS) = 0;
if (status & (1 << 5) && !(flags & (RESET_FLAG_SOFT |
RESET_FLAG_HARD |
RESET_FLAG_HIBERNATE)))
flags |= RESET_FLAG_WATCHDOG;
system_set_reset_flags(flags);
}
void chip_save_reset_flags(int flags)
{
MEC1322_VBAT_RAM(HIBDATA_INDEX_SAVED_RESET_FLAGS) = flags;
}
void system_set_image_copy(enum system_image_copy_t copy)
{
MEC1322_VBAT_RAM(MEC1322_IMAGETYPE_IDX) = (copy == SYSTEM_IMAGE_RW) ?
SYSTEM_IMAGE_RW : SYSTEM_IMAGE_RO;
}
enum system_image_copy_t system_get_shrspi_image_copy(void)
{
return MEC1322_VBAT_RAM(MEC1322_IMAGETYPE_IDX);
}
uint32_t system_get_scratchpad(void)
{
return MEC1322_VBAT_RAM(HIBDATA_INDEX_SCRATCHPAD);
}
int system_set_scratchpad(uint32_t value)
{
MEC1322_VBAT_RAM(HIBDATA_INDEX_SCRATCHPAD) = value;
return EC_SUCCESS;
}
