Hi Pierre,

There are some minor changes required marked inline as [SAMI].

If you agree, I will make the changes before merging.

Regards,

Sami Mujawar

On 10/10/2022 10:20 am, pierre.gond...@arm.com wrote:
From: Pierre Gondois <pierre.gond...@arm.com>

For Pcc address space, the AccessSize field of a Register is
used to delcare the Pcc Subspace Id. This Id can be up to 256.

Cf. ACPI 6.4, s14.7 Referencing the PCC address space

Signed-off-by: Pierre Gondois <pierre.gond...@arm.com>
---
  .../Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c | 7 ++++++-
  1 file changed, 6 insertions(+), 1 deletion(-)

diff --git 
a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c 
b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c
index 332962bed441..3901b6e47333 100644
--- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c
+++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c
@@ -1257,7 +1257,12 @@ AmlCodeGenRdRegister (
    AML_DATA_NODE                         *RdNode;
    EFI_ACPI_GENERIC_REGISTER_DESCRIPTOR  RdRegister;
- if ((AccessSize > EFI_ACPI_6_4_QWORD) ||
+  // Cf Cf. ACPI 6.4, s14.7 Referencing the PCC address space
[SAMI] Cf appears twice.
+  // The AccessSize represents the Subspace Id for the PCC address space.
+  if (((AddressSpace == EFI_ACPI_6_3_PLATFORM_COMMUNICATION_CHANNEL) &&
+       (AccessSize > 256)) ||
+      ((AddressSpace != EFI_ACPI_6_3_PLATFORM_COMMUNICATION_CHANNEL) &&
[SAMI] Change EFI_ACPI_6_3_PLATFORM_COMMUNICATION_CHANNEL to EFI_ACPI_6_4_PLATFORM_COMMUNICATION_CHANNEL.
+       (AccessSize > EFI_ACPI_6_4_QWORD)) ||
        ((NameOpNode == NULL) && (NewRdNode == NULL)))
    {
      ASSERT (0);


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