diff options
| -rw-r--r-- | DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlResourceDataCodeGen.c index 332962bed4..4ca63ccd23 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. ACPI 6.4, s14.7 Referencing the PCC address space
+ // The AccessSize represents the Subspace Id for the PCC address space.
+ if (((AddressSpace == EFI_ACPI_6_4_PLATFORM_COMMUNICATION_CHANNEL) &&
+ (AccessSize > 256)) ||
+ ((AddressSpace != EFI_ACPI_6_4_PLATFORM_COMMUNICATION_CHANNEL) &&
+ (AccessSize > EFI_ACPI_6_4_QWORD)) ||
((NameOpNode == NULL) && (NewRdNode == NULL)))
{
ASSERT (0);
|