[edk2-devel][PATCH V1 1/1] Platform/Sgi: Add memory map entry for debug uart controller

[edk2-devel][PATCH V1 1/1] Platform/Sgi: Add memory map entry for debug uart controller

[Tony K Nadackal]

The UART0 controller connected in the AXI expansion space is used as the
debug UART controller. Add platform memory map descriptor for this UART
controller.

Signed-off-by: Tony K Nadackal <tony.nadackal@arm.com>
---
 Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c | 6 ++++++
 1 file changed, 6 insertions(+)

Link to github branch with the patch in this series -
https://github.com/tonykn-arm/edk2-platforms/tree/dbguart

diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
index 8139b75d8e..096fae000c 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
@@ -171,6 +171,12 @@ ArmPlatformGetVirtualMemoryMap (
   VirtualMemoryTable[Index].Length          = SIZE_64KB;
   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 
+  // Expansion AXI - Debug UART
+  VirtualMemoryTable[++Index].PhysicalBase  = FixedPcdGet64 (PcdSerialDbgRegisterBase);
+  VirtualMemoryTable[Index].VirtualBase     = FixedPcdGet64 (PcdSerialDbgRegisterBase);
+  VirtualMemoryTable[Index].Length          = SIZE_64KB;
+  VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
   // DDR - (2GB - 16MB)
   VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdSystemMemoryBase);
   VirtualMemoryTable[Index].VirtualBase     = PcdGet64 (PcdSystemMemoryBase);
-- 
2.25.1