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-rw-r--r--src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c b/src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c
index bb9cc2e0a2..f9114434ab 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c
+++ b/src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c
@@ -6,14 +6,26 @@
*/
#include "ec.h"
+#include <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <delay.h>
#include <ec/compal/ene932/ec.h>
#include <southbridge/amd/agesa/hudson/hudson.h>
+#define ACPI_PM1_CNT_SLEEP(state) ((1 << 13) | (state & 0x7) << 10)
+
+enum sleep_states {
+ S0 = 0,
+ S1 = 1,
+ S3 = 3,
+ S4 = 4,
+ S5 = 5,
+};
+
enum ec_smi_event {
EC_SMI_EVENT_IDLE = 0x80,
+ EC_SMI_BATTERY_LOW = 0xb3,
};
/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */
@@ -37,12 +49,18 @@ static uint8_t ec_get_smi_event(void)
static void ec_process_smi(uint8_t src)
{
- /*
- * Stub: We aren't processing any events yet, but reading the SMI source
- * satisfies the EC in terms of responding to the event.
+ /* Reading the SMI source satisfies the EC in terms of responding to
+ * the event, regardless of whether we take an action or not.
*/
- printk(BIOS_DEBUG, "EC_SMI event 0x%x\n", src);
+ switch (src) {
+ case EC_SMI_BATTERY_LOW:
+ printk(BIOS_DEBUG, "Battery low. Shutting down\n");
+ outl(ACPI_PM1_CNT_SLEEP(S5), ACPI_PM1_CNT_BLK);
+ break;
+ default:
+ printk(BIOS_DEBUG, "EC_SMI event 0x%x\n", src);
+ }
}
static void handle_ec_smi(void)