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authorArthur Heymans <arthur@aheymans.xyz>2023-04-25 15:54:09 +0200
committerLean Sheng Tan <sheng.tan@9elements.com>2023-04-26 15:41:12 +0000
commit26c571cff98c869c68b9b04f44480d4a6d4642fc (patch)
tree4c29b798c1e8e5d232da0160b322f2163fe9486b /src/southbridge/intel/common
parentcbc5d3f34b87db779829eabc90c32780a3865a56 (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/common')
-rw-r--r--src/southbridge/intel/common/acpi/sleepstates.asl37
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 */