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authorMartin Roth <gaumless@gmail.com>2023-01-04 21:27:06 -0700
committerMartin L Roth <gaumless@gmail.com>2023-01-12 03:13:17 +0000
commit20646cdbe80737e3a931dec70a8279163b2a9d60 (patch)
tree54a14680804d1cb8cbd0d2000dd0b3ec8319945b /src/soc/amd/phoenix/acpi
parentba2cef5b54938cce17871143ea9bbd3fc6868971 (diff)
soc/amd: Change Morgana codename to Phoenix
Now that the next generation of APUs is officially announced, we can unmask morgana. The chip formerly known as Morgana is actually Phoenix. Surprise! This patch just changes the name across the entire codebase. Note that the fw.cfg file will stay pointing to the 3rdparty/amd_blobs/morgana/psp directory until the amd_blobs_repo is updated. Signed-off-by: Martin Roth <martin.roth@amd.corp-partner.google.com> Change-Id: Ie9492a30ae9ff9cd7e15e0f2d239c32190ad4956 Reviewed-on: https://review.coreboot.org/c/coreboot/+/71731 Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/phoenix/acpi')
-rw-r--r--src/soc/amd/phoenix/acpi/globalnvs.asl22
-rw-r--r--src/soc/amd/phoenix/acpi/mmio.asl386
-rw-r--r--src/soc/amd/phoenix/acpi/pci0.asl86
-rw-r--r--src/soc/amd/phoenix/acpi/pci_int_defs.asl71
-rw-r--r--src/soc/amd/phoenix/acpi/soc.asl52
5 files changed, 617 insertions, 0 deletions
diff --git a/src/soc/amd/phoenix/acpi/globalnvs.asl b/src/soc/amd/phoenix/acpi/globalnvs.asl
new file mode 100644
index 0000000000..8012a7b3b0
--- /dev/null
+++ b/src/soc/amd/phoenix/acpi/globalnvs.asl
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/* TODO: Check if this is still correct */
+
+/*
+ * NOTE: The layout of the GNVS structure below must match the layout in
+ * soc/amd/phoenix/include/soc/nvs.h !!!
+ */
+
+Field (GNVS, ByteAcc, NoLock, Preserve)
+{
+ /* Miscellaneous */
+ , 8, // 0x00 - Processor Count
+ LIDS, 8, // 0x01 - LID State
+ , 8, // 0x02 - AC Power State
+ CBMC, 32, // 0x03 - 0x06 - coreboot Memory Console
+ PM1I, 64, // 0x07 - 0x0e - System Wake Source - PM1 Index
+ GPEI, 64, // 0x0f - 0x16 - GPE Wake Source
+ TMPS, 8, // 0x17 - Temperature Sensor ID
+ TCRT, 8, // 0x18 - Critical Threshold
+ TPSV, 8, // 0x19 - Passive Threshold
+}
diff --git a/src/soc/amd/phoenix/acpi/mmio.asl b/src/soc/amd/phoenix/acpi/mmio.asl
new file mode 100644
index 0000000000..e8130b0037
--- /dev/null
+++ b/src/soc/amd/phoenix/acpi/mmio.asl
@@ -0,0 +1,386 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for Phoenix */
+
+#include <soc/amd/common/acpi/aoac.asl>
+#include <soc/aoac_defs.h>
+#include <soc/gpio.h>
+#include <soc/iomap.h>
+#include <amdblocks/acpimmio_map.h>
+
+Device (AAHB)
+{
+ Name (_HID, "AAHB0000")
+ Name (_UID, 0x0)
+ Name (_CRS, ResourceTemplate()
+ {
+ Memory32Fixed (ReadWrite, ALINK_AHB_ADDRESS, 0x2000)
+ })
+ Name (_STA, 0xb)
+}
+
+Device (GPIO)
+{
+ Name (_HID, GPIO_DEVICE_NAME)
+ Name (_CID, GPIO_DEVICE_NAME)
+ Name (_UID, 0)
+ Name (_DDN, GPIO_DEVICE_DESC)
+
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Level,
+ ActiveLow,
+ Shared, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, ACPIMMIO_GPIO0_BASE, 0x400)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IGPI
+ } Else {
+ IRQN = PGPI
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, ACPIMMIO_GPIO0_BASE, 0x400)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+}
+
+Device (FUR0)
+{
+ Name (_HID, "AMDI0020")
+ Name (_UID, 0x0)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_UART0_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IUA0
+ } Else {
+ IRQN = PUA0
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_UART0_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_UART0, 0)
+}
+
+Device (FUR1) {
+ Name (_HID, "AMDI0020")
+ Name (_UID, 0x1)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_UART1_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IUA1
+ } Else {
+ IRQN = PUA1
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_UART1_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_UART1, 0)
+}
+
+Device (FUR2) {
+ Name (_HID, "AMDI0020")
+ Name (_UID, 0x2)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_UART2_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IUA2
+ } Else {
+ IRQN = PUA2
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_UART2_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_UART2, 0)
+}
+
+Device (FUR3) {
+ Name (_HID, "AMDI0020")
+ Name (_UID, 0x3)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_UART3_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IUA3
+ } Else {
+ IRQN = PUA3
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_UART3_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_UART3, 0)
+}
+
+Device (FUR4) {
+ Name (_HID, "AMDI0020")
+ Name (_UID, 0x4)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_UART4_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = IUA4
+ } Else {
+ IRQN = PUA4
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_UART4_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_UART4, 0)
+}
+
+Device (I2C0) {
+ Name (_HID, "AMDI0010")
+ Name (_UID, 0x0)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_I2C0_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = II20
+ } Else {
+ IRQN = PI20
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_I2C0_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_I2C0, 0)
+}
+
+Device (I2C1) {
+ Name (_HID, "AMDI0010")
+ Name (_UID, 0x1)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_I2C1_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = II21
+ } Else {
+ IRQN = PI21
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_I2C1_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_I2C1, 0)
+}
+
+Device (I2C2) {
+ Name (_HID, "AMDI0010")
+ Name (_UID, 0x2)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_I2C2_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = II22
+ } Else {
+ IRQN = PI22
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_I2C2_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+
+ AOAC_DEVICE(FCH_AOAC_DEV_I2C2, 0)
+}
+
+Device (I2C3)
+{
+#if CONFIG(SOC_AMD_COMMON_BLOCK_I2C3_TPM_SHARED_WITH_PSP)
+ Name (_HID, "AMDI0019")
+#else
+ Name (_HID, "AMDI0010")
+#endif
+ Name (_UID, 0x3)
+ Method (_CRS, 0) {
+ Local0 = ResourceTemplate() {
+ Interrupt (
+ ResourceConsumer,
+ Edge,
+ ActiveHigh,
+ Exclusive, , , IRQR)
+ { 0 }
+ Memory32Fixed (ReadWrite, APU_I2C3_BASE, 0x1000)
+ }
+ CreateDWordField (Local0, IRQR._INT, IRQN)
+ If (PICM) {
+ IRQN = II23
+ } Else {
+ IRQN = PI23
+ }
+ If (IRQN == 0x1f) {
+ Return (ResourceTemplate() {
+ Memory32Fixed (ReadWrite, APU_I2C3_BASE, 0x1000)
+ })
+ } Else {
+ Return (Local0)
+ }
+ }
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+
+/* If this device is shared with PSP, then PSP takes care of power management */
+#if !CONFIG(SOC_AMD_COMMON_BLOCK_I2C3_TPM_SHARED_WITH_PSP)
+ AOAC_DEVICE(FCH_AOAC_DEV_I2C3, 0)
+#endif
+}
+
+Device (MISC)
+{
+ Name (_HID, "AMD0040")
+ Name (_UID, 0x3)
+ Name (_CRS, ResourceTemplate() {
+ Memory32Fixed (ReadWrite, ACPIMMIO_MISC_BASE, 0x100)
+ })
+ Name (_DSD, Package ()
+ {
+ ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+ Package ()
+ {
+ Package () { "is-rv", 1 },
+ },
+ })
+ Method (_STA, 0x0, NotSerialized)
+ {
+ Return (0x0F)
+ }
+}
diff --git a/src/soc/amd/phoenix/acpi/pci0.asl b/src/soc/amd/phoenix/acpi/pci0.asl
new file mode 100644
index 0000000000..665fe30423
--- /dev/null
+++ b/src/soc/amd/phoenix/acpi/pci0.asl
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for Phoenix */
+
+Device(PCI0) {
+ Name(_HID, EISAID("PNP0A08")) /* PCI Express Root Bridge */
+ Name(_CID, EISAID("PNP0A03")) /* PCI Root Bridge */
+ External(TOM1, IntObj) /* Generated by root_complex.c */
+
+ Method(_BBN, 0, NotSerialized) {
+ Return(0) /* Bus number = 0 */
+ }
+
+ Method(_STA, 0, NotSerialized) {
+ Return(0x0B) /* Status is visible */
+ }
+
+ /* Operating System Capabilities Method */
+ Method(_OSC, 4) {
+ CreateDWordField(Arg3, 0, CDW1) /* Capabilities dword 1 */
+
+ /* Check for proper PCI/PCIe UUID */
+ If (Arg0 == ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766")) {
+ /* Let OS control everything */
+ Return (Arg3)
+ } Else {
+ CDW1 |= 4 /* Unrecognized UUID */
+ Return (Arg3)
+ }
+ }
+ Name(CRES, ResourceTemplate() {
+ WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
+ 0x0000, /* address granularity */
+ 0x0000, /* range minimum */
+ 0x00ff, /* range maximum */
+ 0x0000, /* translation */
+ 0x0100, /* length */
+ ,, PSB0) /* ResourceSourceIndex, ResourceSource, DescriptorName */
+
+ IO(Decode16, 0x0cf8, 0x0cf8, 1, 8)
+
+ WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+ 0x0000, /* address granularity */
+ 0x0000, /* range minimum */
+ 0x0cf7, /* range maximum */
+ 0x0000, /* translation */
+ 0x0cf8 /* length */
+ )
+
+ WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+ 0x0000, /* address granularity */
+ 0x0d00, /* range minimum */
+ 0xffff, /* range maximum */
+ 0x0000, /* translation */
+ 0xf300 /* length */
+ )
+
+ Memory32Fixed(READONLY, 0x000a0000, 0x00020000, VGAM) /* VGA memory space */
+ Memory32Fixed(READONLY, 0x000c0000, 0x00020000, EMM1) /* Assume C0000-E0000 empty */
+
+ /* memory space for PCI BARs below 4GB */
+ Memory32Fixed(ReadOnly, 0x00000000, 0x00000000, MMIO)
+ })
+
+ Method(_CRS, 0) {
+ CreateDWordField(CRES, ^MMIO._BAS, MM1B)
+ CreateDWordField(CRES, ^MMIO._LEN, MM1L)
+
+ /* Declare memory between TOM1 and MMCONF as available for PCI MMIO. */
+ MM1B = TOM1
+ Local0 = CONFIG_ECAM_MMCONF_BASE_ADDRESS
+ Local0 -= TOM1
+ MM1L = Local0
+
+ CreateWordField(CRES, ^PSB0._MAX, BMAX)
+ CreateWordField(CRES, ^PSB0._LEN, BLEN)
+ BMAX = CONFIG_ECAM_MMCONF_BUS_NUMBER - 1
+ BLEN = CONFIG_ECAM_MMCONF_BUS_NUMBER
+
+ Return(CRES) /* note to change the Name buffer */
+ } /* end of Method(_SB.PCI0._CRS) */
+
+ /* 0:14.3 - LPC */
+ #include <soc/amd/common/acpi/lpc.asl>
+
+} /* End PCI0 scope */
diff --git a/src/soc/amd/phoenix/acpi/pci_int_defs.asl b/src/soc/amd/phoenix/acpi/pci_int_defs.asl
new file mode 100644
index 0000000000..5d6aadc321
--- /dev/null
+++ b/src/soc/amd/phoenix/acpi/pci_int_defs.asl
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for Phoenix */
+
+/* PCI IRQ mapping registers, C00h-C01h. */
+OperationRegion(PRQM, SystemIO, 0x00000c00, 0x00000002)
+ Field(PRQM, ByteAcc, NoLock, Preserve) {
+ PRQI, 0x00000008,
+ PRQD, 0x00000008, /* Offset: 1h */
+}
+/*
+ * All PIC indexes are prefixed with P.
+ * All IO-APIC indexes are prefixed with I.
+ */
+IndexField(PRQI, PRQD, ByteAcc, NoLock, Preserve) {
+ PIRA, 0x00000008, /* Index 0: INTA */
+ PIRB, 0x00000008, /* Index 1: INTB */
+ PIRC, 0x00000008, /* Index 2: INTC */
+ PIRD, 0x00000008, /* Index 3: INTD */
+ PIRE, 0x00000008, /* Index 4: INTE */
+ PIRF, 0x00000008, /* Index 5: INTF */
+ PIRG, 0x00000008, /* Index 6: INTG */
+ PIRH, 0x00000008, /* Index 7: INTH */
+
+ Offset (0x60),
+ PGSC, 0x00000008, /* Index 0x60: GEventSci */
+ PGSM, 0x00000008, /* Index 0x61: GEventSmi */
+ PGPI, 0x00000008, /* Index 0x62: GPIO */
+
+ Offset (0x70),
+ PI20, 0x00000008, /* Index 0x70: I2C0 */
+ PI21, 0x00000008, /* Index 0x71: I2C1 */
+ PI22, 0x00000008, /* Index 0x72: I2C2 */
+ PI23, 0x00000008, /* Index 0x73: I2C3 */
+ PUA0, 0x00000008, /* Index 0x74: UART0 */
+ PUA1, 0x00000008, /* Index 0x75: UART1 */
+
+ Offset (0x77),
+ PUA4, 0x00000008, /* Index 0x77: UART4 */
+ PUA2, 0x00000008, /* Index 0x78: UART2 */
+ PUA3, 0x00000008, /* Index 0x79: UART3 */
+
+ /* IO-APIC IRQs */
+ Offset (0x80),
+ IORA, 0x00000008, /* Index 0x80: INTA */
+ IORB, 0x00000008, /* Index 0x81: INTB */
+ IORC, 0x00000008, /* Index 0x82: INTC */
+ IORD, 0x00000008, /* Index 0x83: INTD */
+ IORE, 0x00000008, /* Index 0x84: INTE */
+ IORF, 0x00000008, /* Index 0x85: INTF */
+ IORG, 0x00000008, /* Index 0x86: INTG */
+ IORH, 0x00000008, /* Index 0x87: INTH */
+
+ Offset (0xE0),
+ IGSC, 0x00000008, /* Index 0xE0: GEventSci */
+ IGSM, 0x00000008, /* Index 0xE1: GEventSmi */
+ IGPI, 0x00000008, /* Index 0xE2: GPIO */
+
+ Offset (0xF0),
+ II20, 0x00000008, /* Index 0xF0: I2C0 */
+ II21, 0x00000008, /* Index 0xF1: I2C1 */
+ II22, 0x00000008, /* Index 0xF2: I2C2 */
+ II23, 0x00000008, /* Index 0xF3: I2C3 */
+ IUA0, 0x00000008, /* Index 0xF4: UART0 */
+ IUA1, 0x00000008, /* Index 0xF5: UART1 */
+
+ Offset (0xF7),
+ IUA4, 0x00000008, /* Index 0xF7: UART4 */
+ IUA2, 0x00000008, /* Index 0xF8: UART2 */
+ IUA3, 0x00000008, /* Index 0xF9: UART3 */
+}
diff --git a/src/soc/amd/phoenix/acpi/soc.asl b/src/soc/amd/phoenix/acpi/soc.asl
new file mode 100644
index 0000000000..4df7835b55
--- /dev/null
+++ b/src/soc/amd/phoenix/acpi/soc.asl
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for Phoenix */
+
+#include "globalnvs.asl"
+
+Scope(\_SB) {
+ /* global utility methods expected within the \_SB scope */
+ #include <arch/x86/acpi/globutil.asl>
+
+ #include <soc/amd/common/acpi/gpio_bank_lib.asl>
+
+ #include <soc/amd/common/acpi/osc.asl>
+
+ #include "pci_int_defs.asl"
+
+ #include <soc/amd/common/acpi/pci_int.asl>
+
+ #include "mmio.asl"
+
+ #include "pci0.asl"
+} /* End \_SB scope */
+
+#include <soc/amd/common/acpi/alib.asl>
+
+#include <soc/amd/common/acpi/platform.asl>
+
+#include <soc/amd/common/acpi/sleepstates.asl>
+
+#include <soc/amd/common/acpi/upep.asl>
+
+#if CONFIG(SOC_AMD_COMMON_BLOCK_ACPI_DPTC)
+#include <soc/amd/common/acpi/dptc.asl>
+#endif
+
+/* Enable DPTC interface with AMD ALIB */
+External(\_SB.DPTC, MethodObj)
+
+/*
+ * Platform Notify
+ *
+ * This is called by soc/amd/common/acpi/platform.asl.
+ */
+Method (PNOT)
+{
+ /* Report AC/DC state to ALIB using WAL1() */
+ \WAL1 ()
+
+ If (CondRefOf (\_SB.DPTC)) {
+ \_SB.DPTC()
+ }
+}