[edk2-devel] [PATCH edk2-platforms v1 1/3] Platform/ARM: Add dynamic CPU node generation for FVP

[Sami Mujawar]

Add support to dynamically generate the CPU nodes in SSDT.

Signed-off-by: Sami Mujawar <sami.mujawar at arm.com>
---
 Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl     | 38 +-------------------
 Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c |  8 ++++-
 Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h |  2 +-
 3 files changed, 9 insertions(+), 39 deletions(-)

diff --git a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
index 3acc0c6bc1b48b747e011022f2300b2fe3fa994b..f60430b94c867ee9744a3355b0ea377aff42b1c4 100644
--- a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
+++ b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
@@ -1,7 +1,7 @@
 /** @file
   Differentiated System Description Table Fields (DSDT)
 
-  Copyright (c) 2014-2021, ARM Ltd. All rights reserved.<BR>
+  Copyright (c) 2014-2023, ARM Ltd. All rights reserved.<BR>
   Copyright (c) 2013, Al Stone <al.stone at linaro.org>
   All rights reserved.
 
@@ -11,42 +11,6 @@
 
 DefinitionBlock("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARM-VEXP", 1) {
   Scope(_SB) {
-    //
-    // Processor
-    //
-    Device(CPU0) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, Zero)
-    }
-    Device(CPU1) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, One)
-    }
-    Device(CPU2) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 2)
-    }
-    Device(CPU3) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 3)
-    }
-    Device(CPU4) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 4)
-    }
-    Device(CPU5) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 5)
-    }
-    Device(CPU6) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 6)
-    }
-    Device(CPU7) {
-      Name(_HID, "ACPI0007")
-      Name(_UID, 7)
-    }
-
     // SMC91X
     Device (NET0) {
       Name (_HID, "LNRO0003")
diff --git a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
index 58a4bf9890bc2a701dab558a1987f9a51662481a..4df2d6cdae58df344804a8b41208a3adb8ee0110 100644
--- a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
+++ b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
@@ -77,7 +77,13 @@ EDKII_PLATFORM_REPOSITORY_INFO VExpressPlatRepositoryInfo = {
       CREATE_STD_ACPI_TABLE_GEN_ID (EStdAcpiTableIdDbg2),
       NULL
     },
-
+    // SSDT Cpu Hierarchy Table
+    {
+      EFI_ACPI_6_3_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE,
+      0, // Unused
+      CREATE_STD_ACPI_TABLE_GEN_ID (EStdAcpiTableIdSsdtCpuTopology),
+      NULL
+    },
     // Note: The last 3 tables in this list are for FVP RevC only.
     // IORT Table - FVP RevC
     {
diff --git a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
index aebf0a355291df5df5f588e8b7076e21eda9a152..1b52c2ebc7efb633c748f7316606e3dbe4e0b21c 100644
--- a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
+++ b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
@@ -89,7 +89,7 @@ typedef EFI_STATUS (*CM_OBJECT_HANDLER_PROC) (
 
 /** The number of ACPI tables to install
 */
-#define PLAT_ACPI_TABLE_COUNT       9
+#define PLAT_ACPI_TABLE_COUNT       10
 
 /** The number of platform generic timer blocks
 */
-- 
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'



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