diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/hp/pavilion_m6_1035dx/mainboard_smi.c | 26 |
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) |