Enable ACPI CPPC mechanism for RD-N2-Cfg1 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 SCP to set
the desired performance. RD-N2-Cfg1 platform does not support CPPC
revision 1 and below. So update the _OSC method to let OSPM know about
this fact.
Signed-off-by: Pranav Madhu <pranav.ma...@arm.com>
---
Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Dsdt.asl | 78 ++++++++++++++++++++
1 file changed, 78 insertions(+)
diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Dsdt.asl
b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Dsdt.asl
index 55f51cc26aff..411eff84334a 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Dsdt.asl
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Dsdt.asl
@@ -35,6 +35,12 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
And (CAP0, Not (OSC_CAP_OS_INITIATED_LPI), CAP0)
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)
+ }
} Else {
And (STS0, Not (OSC_STS_MASK), STS0)
Or (STS0, Or (OSC_STS_FAILURE, OSC_STS_UNRECOGNIZED_REV), STS0)
@@ -133,6 +139,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 0)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000500, 0x06000504, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (0)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -151,6 +166,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 1)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000518, 0x0600051C, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (1)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -169,6 +193,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 2)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000530, 0x06000534, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (2)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -187,6 +220,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 3)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000548, 0x0600054C, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (3)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -205,6 +247,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 4)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000560, 0x06000564, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (4)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -223,6 +274,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 5)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000578, 0x0600057C, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (5)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -241,6 +301,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 6)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x06000590, 0x06000594, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (6)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
@@ -259,6 +328,15 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD",
"ARMSGI",
Name (_UID, 7)
Name (_STA, 0xF)
+ Name (_CPC, Package()
+ CPPC_PACKAGE_INIT (0x060005A8, 0x060005AC, 20, 160, 160, 115, 115, 5)
+ )
+
+ Name (_PSD, Package () {
+ Package ()
+ PSD_INIT (7)
+ })
+
Method (_LPI, 0, NotSerialized) {
Return (\_SB.PLPI)
}
--
2.17.1
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