diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2023-04-25 15:54:09 +0200 |
|---|---|---|
| committer | Lean Sheng Tan <sheng.tan@9elements.com> | 2023-04-26 15:41:12 +0000 |
| commit | 26c571cff98c869c68b9b04f44480d4a6d4642fc (patch) | |
| tree | 4c29b798c1e8e5d232da0160b322f2163fe9486b /src/southbridge/intel | |
| parent | cbc5d3f34b87db779829eabc90c32780a3865a56 (diff) | |
sb/intel/sleepstates.asl: Use variable to enable sleepstates
In order to make supported sleep states a runtime configuration option
use a variable. A follow-up patch will implement updating this variable
based on an SSDT generated IntObj.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I6910c2c75e668e6f75a6f431813edeb59d52dd93
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74761
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Diffstat (limited to 'src/southbridge/intel')
| -rw-r--r-- | src/southbridge/intel/common/acpi/sleepstates.asl | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/src/southbridge/intel/common/acpi/sleepstates.asl b/src/southbridge/intel/common/acpi/sleepstates.asl index 30e12a03ed..079ab1ab84 100644 --- a/src/southbridge/intel/common/acpi/sleepstates.asl +++ b/src/southbridge/intel/common/acpi/sleepstates.asl @@ -1,14 +1,31 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -Name(\_S0, Package(){0x0,0x0,0x0,0x0}) -#if !CONFIG(HAVE_ACPI_RESUME) -#if !CONFIG(ACPI_S1_NOT_SUPPORTED) -Name(\_S1, Package(){0x1,0x0,0x0,0x0}) -#endif +/* S1 support: bit 0, S2 Support: bit 1, etc. S0 & S5 assumed */ +#if CONFIG(HAVE_ACPI_RESUME) +Name (SSFG, 0x0D) #else -Name(\_S3, Package(){0x5,0x0,0x0,0x0}) -#endif -#if !CONFIG(DISABLE_ACPI_HIBERNATE) -Name(\_S4, Package(){0x6,0x0,0x0,0x0}) +Name (SSFG, 0x09) #endif -Name(\_S5, Package(){0x7,0x0,0x0,0x0}) + +If (CONFIG(ACPI_S1_NOT_SUPPORTED)) { + SSFG &= 0xfe +} + +If (CONFIG(DISABLE_ACPI_HIBERNATE)) { + SSFG &= 0xf7 +} + +/* Supported sleep states: */ +Name(\_S0, Package () {0x00, 0x00, 0x00, 0x00} ) /* (S0) - working state */ + +If (SSFG & 0x01) { + Name(\_S1, Package () {0x01, 0x00, 0x00, 0x00} ) /* (S1) - sleeping w/CPU context */ +} +If (SSFG & 0x04) { + Name(\_S3, Package () {0x05, 0x00, 0x00, 0x00} ) /* (S3) - Suspend to RAM */ +} +If (SSFG & 0x08) { + Name(\_S4, Package () {0x06, 0x04, 0x00, 0x00} ) /* (S4) - Suspend to Disk */ +} + +Name(\_S5, Package () {0x07, 0x00, 0x00, 0x00} ) /* (S5) - Soft Off */ |