Enable ACPI CPPC mechanism for RD-Fremont as defined by the ACPI
specification. The implementation uses AMU registers accessible as
Fixed-feature Hardware (FFixedHW) for monitoring the performance.
Non-secure SCMI fastchannels are used to communicate with LCP to set the
desired performance. In addition to this, RD-Fremont platform does not
support CPPC revision 1 and below. So update the _OSC method to let OSPM
know about this fact.
Signed-off-by: Prabin CA <prabin...@arm.com>
---
Platform/ARM/SgiPkg/AcpiTables/RdFremontAcpiTables.inf | 1 +
Platform/ARM/SgiPkg/AcpiTables/RdFremont/Dsdt.asl | 162
++++++++++++++++++++
2 files changed, 163 insertions(+)
diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdFremontAcpiTables.inf
b/Platform/ARM/SgiPkg/AcpiTables/RdFremontAcpiTables.inf
index 7556c1239116..fcaa3299c4ea 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdFremontAcpiTables.inf
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdFremontAcpiTables.inf
@@ -48,6 +48,7 @@ [FixedPcd]
gArmSgiTokenSpaceGuid.PcdGpioController0Interrupt
gArmSgiTokenSpaceGuid.PcdGtFrame0Gsiv
gArmSgiTokenSpaceGuid.PcdGtFrame1Gsiv
+ gArmSgiTokenSpaceGuid.PcdOscCppcEnable
gArmSgiTokenSpaceGuid.PcdOscLpiEnable
gArmSgiTokenSpaceGuid.PcdSp804DualTimerBaseAddress
gArmSgiTokenSpaceGuid.PcdSp804DualTimerSize
diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdFremont/Dsdt.asl
b/Platform/ARM/SgiPkg/AcpiTables/RdFremont/Dsdt.asl
index f921eeb2d99e..9c7266c79285 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdFremont/Dsdt.asl
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdFremont/Dsdt.asl
@@ -11,6 +11,10 @@
* - ACPI 6.5, Chapter 8, Section 8.4.3, Lower Power Idle States
* - Arm Functional Fixed Hardware Specification v1.2, Chapter 3, Section
3.1,
* Idle management and Low Power Idle states
+* - ACPI 6.5, Chapter 8, Section 8.4.6, Collaborative Processor Performance
+* Control
+* - Arm Functional Fixed Hardware Specification v1.2, Chapter 3, Section 3.2,
+* Performance management and Collaborative Processor Performance Control
*
**/
@@ -43,6 +47,20 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI",
Or (STS0, OSC_STS_CAPABILITY_MASKED, STS0)
}
}
+
+ If (And (CAP0, OSC_CAP_CPPC_SUPPORT)) {
+ /* CPPC revision 1 and below not supported */
+ And (CAP0, Not (OSC_CAP_CPPC_SUPPORT), CAP0)
+ Or (STS0, OSC_STS_CAPABILITY_MASKED, STS0)
+ }
+
+ If (And (CAP0, OSC_CAP_CPPC2_SUPPORT)) {
+ if (LEqual (FixedPcdGet32 (PcdOscCppcEnable), Zero)) {
+ And (CAP0, Not (OSC_CAP_CPPC2_SUPPORT), CAP0)
+ Or (STS0, OSC_STS_CAPABILITY_MASKED, STS0)
+ }
+ }
+
} Else {
And (STS0, Not (OSC_STS_MASK), STS0)
Or (STS0, Or (OSC_STS_FAILURE, OSC_STS_UNRECOGNIZED_REV), STS0)
@@ -116,6 +134,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 0)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200093000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (0)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -131,6 +158,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 1)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200293000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (1)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -146,6 +182,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 2)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200493000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (2)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -161,6 +206,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 3)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200693000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (3)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -176,6 +230,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 4)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200893000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (4)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -191,6 +254,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 5)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200A93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (5)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -206,6 +278,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 6)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200C93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (6)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -221,6 +302,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 7)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x200E93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (7)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -236,6 +326,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 8)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201093000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (8)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -251,6 +350,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 9)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201293000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (9)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -266,6 +374,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 10)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201493000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (10)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -281,6 +398,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 11)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201693000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (11)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -296,6 +422,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 12)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201893000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (12)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -311,6 +446,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 13)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201A93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (13)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -326,6 +470,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 14)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201C93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (14)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -341,6 +494,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 15)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x201E93000, 0x0, 20, 160, 160, 85, 85, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (15)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
