diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/asus/p2b/dsdt.asl | 56 |
1 files changed, 40 insertions, 16 deletions
diff --git a/src/mainboard/asus/p2b/dsdt.asl b/src/mainboard/asus/p2b/dsdt.asl index 5e6411ce1b..c5befa00b3 100644 --- a/src/mainboard/asus/p2b/dsdt.asl +++ b/src/mainboard/asus/p2b/dsdt.asl @@ -21,27 +21,51 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2, "CORE ", "COREBOOT", 1) { - /* For now only define 2 power states: - * - S0 which is fully on - * - S5 which is soft off - * Any others would involve declaring the wake up methods. - */ - - /* intel i82371eb (piix4e) datasheet, section 7.2.3, page 142 */ /* - 000b / 0x0: soft off/suspend to disk (soff/std) s5 - 001b / 0x1: suspend to ram (str) s3 - 010b / 0x2: powered on suspend, context lost (poscl) s1 - 011b / 0x3: powered on suspend, cpu context lost (posccl) s2 - 100b / 0x4: powered on suspend, context maintained (pos) s4 - 101b / 0x5: working (clock control) s0 - 110b / 0x6: reserved - 111b / 0x7: reserved - */ + * Intel 82371EB (PIIX4E) datasheet, section 7.2.3, page 142 + * + * 0: soft off/suspend to disk S5 + * 1: suspend to ram S3 + * 2: powered on suspend, context lost S2 + * Note: 'context lost' means the CPU restarts at the reset + * vector + * 3: powered on suspend, CPU context lost S1 + * Note: Looks like 'CPU context lost' does _not_ mean the + * CPU restarts at the reset vector. Most likely only + * caches are lost, so both 0x3 and 0x4 map to acpi S1 + * 4: powered on suspend, context maintained S1 + * 5: working (clock control) S0 + * 6: reserved + * 7: reserved + */ Name (\_S0, Package () { 0x05, 0x05, 0x00, 0x00 }) Name (\_S1, Package () { 0x03, 0x03, 0x00, 0x00 }) Name (\_S5, Package () { 0x00, 0x00, 0x00, 0x00 }) + OperationRegion (SIO1, SystemIO, Add(DEFAULT_PMBASE, GPO0), 2) + Field (SIO1, ByteAcc, NoLock, Preserve) + { + FANP, 1, /* CPU/case fan power */ + Offset (0x01), + PLED, 1, + } + + Method (\_PTS, 1, NotSerialized) + { + /* Disable fan, blink power led */ + Store (Zero, FANP) + Store (Zero, PLED) + } + + Method (\_WAK, 1, NotSerialized) + { + /* Re-enable fan, stop power led blinking */ + Store (One, FANP) + Store (One, PLED) + /* wake OK */ + Return(Package(0x02){0x00, 0x00}) + } + /* Root of the bus hierarchy */ Scope (\_SB) { |