diff options
Diffstat (limited to 'src/soc/intel/apollolake/pmutil.c')
| -rw-r--r-- | src/soc/intel/apollolake/pmutil.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c index 61aa6375d3..dabc2683bc 100644 --- a/src/soc/intel/apollolake/pmutil.c +++ b/src/soc/intel/apollolake/pmutil.c @@ -19,6 +19,7 @@ #include <arch/io.h> #include <console/console.h> +#include <cbmem.h> #include <rules.h> #include <device/pci_def.h> #include <halt.h> @@ -327,6 +328,30 @@ int chipset_prev_sleep_state(struct chipset_power_state *ps) return prev_sleep_state; } +/* + * This function re-writes the gpe0 register values in power state + * cbmem variable. After system wakes from sleep state internal PMC logic + * writes default values in GPE_CFG register which gives a wrong offset to + * calculate the wake reason. So we need to set it again to the routing + * table as per the devicetree. + */ +void fixup_power_state(void) +{ + int i; + struct chipset_power_state *ps; + + ps = cbmem_find(CBMEM_ID_POWER_STATE); + if (ps == NULL) + return; + + for (i = 0; i < GPE0_REG_MAX; i++) { + ps->gpe0_sts[i] = inl(ACPI_PMIO_BASE + GPE0_STS(i)); + ps->gpe0_en[i] = inl(ACPI_PMIO_BASE + GPE0_EN(i)); + printk(BIOS_DEBUG, "gpe0_sts[%d]: %08x gpe0_en[%d]: %08x\n", + i, ps->gpe0_sts[i], i, ps->gpe0_en[i]); + } +} + /* returns prev_sleep_state */ int fill_power_state(struct chipset_power_state *ps) { |