[edk2-devel] [PATCH v2 1/1] Platform/ARM: FVP: set IORT RC address limit for FVP RevC

[Edward Pickup]

When booting Linux on FVP RevC, Linux reports the following error:

ACPI: IORT: [Firmware Bug]: Root complex missing memory address limit

This issue is due to the RC Address Limit not being configured in the
configuration manager for the platform.

Set the value to 64 as the RevC FVP can use the full width, fixing the
error.

Signed-off-by: Edward Pickup <edward.pickup at arm.com>
---

The changes can be seen at https://github.com/edpickup/edk2-platforms/tree/1700_fix_IORT_RC_Addr_Limit_v2

Notes:
    v2:
     - Corrected Memory Address Size Limit [Ard]

 Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
index 776dec999eb1ef47910835987fa4dae1b69c52fd..0ba854610becff7d2544e26ec67a331783bbe75f 100644
--- a/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
+++ b/Platform/ARM/VExpressPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
@@ -312,7 +312,9 @@ EDKII_PLATFORM_REPOSITORY_INFO VExpressPlatRepositoryInfo = {
     // ATS attributes
     EFI_ACPI_IORT_ROOT_COMPLEX_ATS_UNSUPPORTED,
     // PCI segment number
-    0
+    0,
+    // Memory Address Size Limit
+    64
   },
 
   // Array of Device ID mappings
-- 
Guid("CE165669-3EF3-493F-B85D-6190EE5B9759")



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