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-rw-r--r--src/soc/amd/stoneyridge/acpi.c1
-rw-r--r--src/soc/amd/stoneyridge/southbridge.c38
2 files changed, 39 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/acpi.c b/src/soc/amd/stoneyridge/acpi.c
index 735990f093..d7aa088fb0 100644
--- a/src/soc/amd/stoneyridge/acpi.c
+++ b/src/soc/amd/stoneyridge/acpi.c
@@ -281,6 +281,7 @@ static void acpi_create_gnvs(struct global_nvs_t *gnvs)
/* Set unknown wake source */
gnvs->pm1i = ~0ULL;
+ gnvs->gpei = ~0ULL;
/* CPU core count */
gnvs->pcnt = dev_count_cpu();
diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c
index eb8820f250..f01f5344d7 100644
--- a/src/soc/amd/stoneyridge/southbridge.c
+++ b/src/soc/amd/stoneyridge/southbridge.c
@@ -32,6 +32,7 @@
#include <delay.h>
#include <soc/pci_devs.h>
#include <agesa_headers.h>
+#include <soc/nvs.h>
/*
* Table of devices that need their AOAC registers enabled and waited
@@ -678,13 +679,50 @@ static void sb_log_pm1_status(uint16_t pm1_sts)
elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
}
+struct soc_amd_sws {
+ uint32_t pm1i;
+ uint32_t gevent;
+};
+
+static struct soc_amd_sws sws;
+
+static void sb_save_sws(uint32_t pm1_status)
+{
+ uint32_t reg32;
+
+ sws.pm1i = pm1_status;
+ reg32 = inl(ACPI_GPE0_BLK);
+ outl(ACPI_GPE0_BLK, reg32);
+ reg32 &= inl(ACPI_GPE0_BLK + sizeof(uint32_t));
+ sws.gevent = reg32;
+}
+
static void sb_clear_pm1_status(void)
{
uint16_t pm1_sts = reset_pm1_status();
+
+ sb_save_sws(pm1_sts);
sb_log_pm1_status(pm1_sts);
print_pm1_status(pm1_sts);
}
+static void set_nvs_sws(void *unused)
+{
+ struct global_nvs_t *gnvs;
+
+ gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
+ if (gnvs == NULL)
+ return;
+
+ gnvs->pm1i = sws.pm1i;
+ gnvs->gpei = sws.gevent;
+
+ printk(BIOS_DEBUG, "Loaded _SWS parameters PM1 0x%08x, EVENT 0x%08x into nvs\n",
+ sws.pm1i, sws.gevent);
+}
+
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, set_nvs_sws, NULL);
+
void southbridge_init(void *chip_info)
{
sb_init_acpi_ports();