[edk2-devel] [edk2-platforms][PATCH V2 4/5] Platform/Sgi: Initialize additional UART controllers
Vivek Kumar Gautam
vivek.gautam at arm.com
Fri Jan 27 09:23:37 UTC 2023
From: Shriram K <shriram.k at arm.com>
The IO virtualization block on reference design platforms allow
connecting SoC expansion devices such as PL011 UART. On platforms
that support this, initialize the UART controller connected to the
IO virtualization block.
Signed-off-by: Shriram K <shriram.k at arm.com>
Signed-off-by: Vivek Gautam <vivek.gautam at arm.com>
---
Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf | 10 ++-
Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf | 7 ++-
Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c | 64 +++++++++++++++++++-
Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c | 43 ++++++++++++-
Platform/ARM/SgiPkg/SgiPlatform.dec | 1 +
5 files changed, 118 insertions(+), 7 deletions(-)
diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
index 9d89314a594e..42feadaf5f6f 100644
--- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
+++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018, ARM Limited. All rights reserved.
+# Copyright (c) 2018 - 2023, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -17,6 +17,7 @@
VirtioDevices.c
[Packages]
+ ArmPlatformPkg/ArmPlatformPkg.dec
EmbeddedPkg/EmbeddedPkg.dec
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
@@ -37,10 +38,17 @@
gArmSgiTokenSpaceGuid.PcdVirtioNetSupported
[FixedPcd]
+ gArmSgiTokenSpaceGuid.PcdChipCount
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlk0Base
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkPeriOffset
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkUartEnable
+ gArmSgiTokenSpaceGuid.PcdMaxAddressBitsPerChip
gArmSgiTokenSpaceGuid.PcdVirtioBlkBaseAddress
gArmSgiTokenSpaceGuid.PcdVirtioBlkSize
gArmSgiTokenSpaceGuid.PcdVirtioNetBaseAddress
gArmSgiTokenSpaceGuid.PcdVirtioNetSize
+ gArmPlatformTokenSpaceGuid.PcdSerialDbgUartClkInHz
+
[Depex]
TRUE
diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
index 1ca7679b4191..4459b20ecb06 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018 - 2022, Arm Limited. All rights reserved.
+# Copyright (c) 2018 - 2023, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -41,10 +41,13 @@
gArmPlatformTokenSpaceGuid.PcdCoreCount
gArmPlatformTokenSpaceGuid.PcdArmHdLcdBase
- gArmSgiTokenSpaceGuid.PcdMaxAddressBitsPerChip
gArmSgiTokenSpaceGuid.PcdDramBlock2Base
gArmSgiTokenSpaceGuid.PcdDramBlock2Size
gArmSgiTokenSpaceGuid.PcdGicSize
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlk0Base
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkPeriOffset
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkUartEnable
+ gArmSgiTokenSpaceGuid.PcdMaxAddressBitsPerChip
gArmTokenSpaceGuid.PcdSystemMemoryBase
gArmTokenSpaceGuid.PcdSystemMemorySize
diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
index 2f72e7152ff3..b3a998bc1585 100644
--- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
+++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
@@ -1,6 +1,6 @@
/** @file
*
-* Copyright (c) 2018, ARM Limited. All rights reserved.
+* Copyright (c) 2018 - 2023, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
@@ -9,6 +9,9 @@
#include <Library/AcpiLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
+#include <Library/PL011UartLib.h>
+
+#include <IoVirtSoCExp.h>
#include <SgiPlatform.h>
VOID
@@ -16,6 +19,64 @@ InitVirtioDevices (
VOID
);
+/**
+ Initialize UART controllers connected to IO Virtualization block.
+
+ Use PL011UartLib Library to initialize UART controllers that are present in
+ the SoC expansion block. This SoC expansion block is connected to the IO
+ virtualization block on Arm infrastructure reference design (RD) platforms.
+
+ @retval None
+**/
+STATIC
+VOID
+InitIoVirtSocExpBlkUartControllers (VOID)
+{
+ EFI_STATUS Status;
+ EFI_PARITY_TYPE Parity;
+ EFI_STOP_BITS_TYPE StopBits;
+ UINT64 BaudRate;
+ UINT32 ReceiveFifoDepth;
+ UINT8 DataBits;
+ UINT8 UartIdx;
+ UINT32 ChipIdx;
+ UINT64 UartAddr;
+
+ if (FixedPcdGet32 (PcdIoVirtSocExpBlkUartEnable) == 0)
+ return;
+
+ ReceiveFifoDepth = 0;
+ Parity = 1;
+ DataBits = 8;
+ StopBits = 1;
+ BaudRate = 115200;
+
+ for (ChipIdx = 0; ChipIdx < FixedPcdGet32 (PcdChipCount); ChipIdx++) {
+ for (UartIdx = 0; UartIdx < 2; UartIdx++) {
+ UartAddr = SGI_REMOTE_CHIP_MEM_OFFSET(ChipIdx) + UART_START(UartIdx);
+
+ Status = PL011UartInitializePort (
+ (UINTN)UartAddr,
+ FixedPcdGet32 (PcdSerialDbgUartClkInHz),
+ &BaudRate,
+ &ReceiveFifoDepth,
+ &Parity,
+ &DataBits,
+ &StopBits
+ );
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "Failed to init PL011_UART%u on IO Virt Block port, status: %r\n",
+ UartIdx,
+ Status
+ ));
+ }
+ }
+ }
+}
+
EFI_STATUS
EFIAPI
ArmSgiPkgEntryPoint (
@@ -32,6 +93,7 @@ ArmSgiPkgEntryPoint (
}
InitVirtioDevices ();
+ InitIoVirtSocExpBlkUartControllers ();
return Status;
}
diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
index 8139b75d8ee4..08aa9bf64940 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
@@ -1,6 +1,6 @@
/** @file
*
-* Copyright (c) 2018-2020, ARM Limited. All rights reserved.
+* Copyright (c) 2018 - 2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
@@ -13,11 +13,23 @@
#include <Library/IoLib.h>
#include <Library/MemoryAllocationLib.h>
+#include <IoVirtSoCExp.h>
#include <SgiPlatform.h>
// Total number of descriptors, including the final "end-of-table" descriptor.
-#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS \
- (14 + (FixedPcdGet32 (PcdChipCount) * 2))
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS \
+ ((14 + (FixedPcdGet32 (PcdChipCount) * 2)) + \
+ (FixedPcdGet32 (PcdIoVirtSocExpBlkUartEnable) * \
+ FixedPcdGet32 (PcdChipCount) * 2))
+
+// Memory Map descriptor for IO Virtualization SoC Expansion Block UART
+#define IO_VIRT_SOC_EXP_BLK_UART_MMAP(UartIdx, ChipIdx) \
+ VirtualMemoryTable[++Index].PhysicalBase = \
+ SGI_REMOTE_CHIP_MEM_OFFSET(ChipIdx) + UART_START(UartIdx); \
+ VirtualMemoryTable[Index].VirtualBase = \
+ SGI_REMOTE_CHIP_MEM_OFFSET(ChipIdx) + UART_START(UartIdx); \
+ VirtualMemoryTable[Index].Length = SIZE_64KB; \
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
/**
Returns the Virtual Memory Map of the platform.
@@ -171,6 +183,31 @@ ArmPlatformGetVirtualMemoryMap (
VirtualMemoryTable[Index].Length = SIZE_64KB;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+#if (FixedPcdGet32 (PcdIoVirtSocExpBlkUartEnable) == 1)
+ // Chip-0 IO Virtualization SoC Expansion Block - UART0
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(0, 0)
+ // Chip-0 IO Virtualization SoC Expansion Block - UART0
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(1, 0)
+#if (FixedPcdGet32 (PcdChipCount) > 1)
+ // Chip-1 IO Virtualization SoC Expansion Block - UART0
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(0, 1)
+ // Chip-1 IO Virtualization SoC Expansion Block - UART1
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(1, 1)
+#if (FixedPcdGet32 (PcdChipCount) > 2)
+ // Chip-2 IO Virtualization SoC Expansion Block - UART0
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(0, 2)
+ // Chip-2 IO Virtualization SoC Expansion Block - UART1
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(1, 2)
+#if (FixedPcdGet32 (PcdChipCount) > 3)
+ // Chip-3 IO Virtualization SoC Expansion Block - UART0
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(0, 3)
+ // Chip-3 IO Virtualization SoC Expansion Block - UART1
+ IO_VIRT_SOC_EXP_BLK_UART_MMAP(1, 3)
+#endif
+#endif
+#endif
+#endif
+
// DDR - (2GB - 16MB)
VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase);
diff --git a/Platform/ARM/SgiPkg/SgiPlatform.dec b/Platform/ARM/SgiPkg/SgiPlatform.dec
index 407f03c1c3e8..43d350ec48bb 100644
--- a/Platform/ARM/SgiPkg/SgiPlatform.dec
+++ b/Platform/ARM/SgiPkg/SgiPlatform.dec
@@ -102,6 +102,7 @@
gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlk0Base|0|UINT64|0x0000002B
gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkPeriOffset|0|UINT32|0x0000002C
gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkResourceSize|0|UINT32|0x0000002D
+ gArmSgiTokenSpaceGuid.PcdIoVirtSocExpBlkUartEnable|0|UINT32|0x0000002E
[Ppis]
gNtFwConfigDtInfoPpiGuid = { 0x6f606eb3, 0x9123, 0x4e15, { 0xa8, 0x9b, 0x0f, 0xac, 0x66, 0xef, 0xd0, 0x17 } }
--
2.25.1
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