From: "Tony K Nadackal" <tony.nadackal@arm.com>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
Sami Mujawar <sami.mujawar@arm.com>,
Thomas Abraham <thomas.abraham@arm.com>
Subject: [edk2-devel][PATCH V2 1/1] Platform/Sgi: Add memory map entry for debug uart controller
Date: Thu, 8 Dec 2022 13:11:47 +0000 [thread overview]
Message-ID: <20221208131147.13800-1-tony.nadackal@arm.com> (raw)
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>
---
Changes since v1:
- Enabled support for this change on RD-N2 platform as well.
Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf | 1 +
Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf | 1 +
Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c | 6 ++++++
3 files changed, 8 insertions(+)
Link to github branch with the patches in this series -
https://github.com/tonykn-arm/edk2-platforms/pull/new/fork-dbg_uart_v2
diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
index 9d89314a59..e592d1e2f9 100644
--- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
+++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
@@ -41,6 +41,7 @@
gArmSgiTokenSpaceGuid.PcdVirtioBlkSize
gArmSgiTokenSpaceGuid.PcdVirtioNetBaseAddress
gArmSgiTokenSpaceGuid.PcdVirtioNetSize
+ gArmPlatformTokenSpaceGuid.PcdSerialDbgRegisterBase
[Depex]
TRUE
diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
index 1ca7679b41..8efb42fb27 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
@@ -83,6 +83,7 @@
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase
+ gArmPlatformTokenSpaceGuid.PcdSerialDbgRegisterBase
[Guids]
gArmSgiPlatformIdDescriptorGuid
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
reply other threads:[~2022-12-08 13:11 UTC|newest]
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