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OvmfPkg/LoongArchVirt: Add serial port hook library

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Add a serial port hook library in LoongArchVirt named
Fdt16550SerialProtHookLib, this library is referenced from ArmVirtPkg.

LoongArch QEMU virtual machine uses register of LOONGARCH_CSR_KS1 to
transfer serial port base addres from the PEI phase to the DXE phase.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Dongyan Qian <qiandongyan@loongson.cn>
Signed-off-by: Chao Li <lichao@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Chao Li 2024-06-14 17:05:54 +08:00 committed by mergify[bot]
parent ace279c036
commit 05f74f1ca7
5 changed files with 172 additions and 0 deletions
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52
OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c Normal file
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/** @file
PEI Phase Early Platform Hook Library instance for 16550 Uart.
Copyright (c) 2020 - 2023, Arm Ltd. All rights reserved.<BR>
Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/BaseLib.h>
#include <Library/FdtSerialPortAddressLib.h>
#include <Library/PcdLib.h>
#include <Library/PlatformHookLib.h>
#include <Register/LoongArch64/Csr.h>
/** Platform hook to retrieve the 16550 UART base address from the platform
Device tree and store it in the reigster LOONGARCH_CSR_KS1.
@retval RETURN_SUCCESS Success.
@retval RETURN_INVALID_PARAMETER A parameter was invalid.
@retval RETURN_NOT_FOUND Serial port information not found.
**/
RETURN_STATUS
EFIAPI
PlatformHookSerialPortInitialize (
VOID
)
{
RETURN_STATUS Status;
VOID *DeviceTreeBase;
UINT64 SerialConsoleAddress;
if (PcdGet64 (PcdSerialRegisterBase) != 0) {
return RETURN_SUCCESS;
}
DeviceTreeBase = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
if (DeviceTreeBase == NULL) {
return RETURN_NOT_FOUND;
}
Status = FdtSerialGetConsolePort (DeviceTreeBase, &SerialConsoleAddress);
if (RETURN_ERROR (Status)) {
return Status;
}
CsrWrite (LOONGARCH_CSR_KS1, (UINTN)SerialConsoleAddress);
return RETURN_SUCCESS;
}

35
OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf Normal file
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## @file
# PEI Phase Early Platform Hook Library instance for 16550 Uart.
#
# Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
# Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = EarlyFdt16550SerialPortHookLib
MODULE_UNI_FILE = Fdt16550SerialPortHookLib.uni
FILE_GUID = 6A5FEBCB-C676-A7C1-A96C-B79D4860EEC5
MODULE_TYPE = PEIM
VERSION_STRING = 1.0
LIBRARY_CLASS = PlatformHookLib|SEC PEI_CORE PEIM
[Sources]
EarlyFdt16550SerialPortHookLib.c
[LibraryClasses]
BaseLib
PcdLib
[Packages]
EmbeddedPkg/EmbeddedPkg.dec
MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[Pcd]
gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase

38
OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.c Normal file
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/** @file
Platform Hook Library instance for 16550 Uart.
Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <Register/LoongArch64/Csr.h>
/** Platform hook to retrieve the 16550 UART base address from register
LOONGARCH_CSR_KS1 that caches the UART base address from early boot
stage and store it in PcdSerialRegisterBase.
@retval RETURN_SUCCESS Success.
@retval RETURN_NOT_FOUND Serial Port information not found.
**/
RETURN_STATUS
EFIAPI
PlatformHookSerialPortInitialize (
VOID
)
{
UINT64 *UartBase;
if (PcdGet64 (PcdSerialRegisterBase) != 0) {
return RETURN_SUCCESS;
}
*UartBase = CsrRead (LOONGARCH_CSR_KS1);
return (RETURN_STATUS)PcdSet64S (PcdSerialRegisterBase, (UINTN)*UartBase);
}

33
OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf Normal file
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## @file
# Platform Hook Library instance for 16550 Uart.
#
# Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
# Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = Fdt16550SerialPortHookLib
MODULE_UNI_FILE = Fdt16550SerialPortHookLib.uni
FILE_GUID = 808335DB-220E-A353-887C-9AA1B7D433A1
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = PlatformHookLib|DXE_CORE DXE_DRIVER UEFI_DRIVER DXE_RUNTIME_DRIVER UEFI_APPLICATION
CONSTRUCTOR = PlatformHookSerialPortInitialize
[Sources]
Fdt16550SerialPortHookLib.c
[LibraryClasses]
BaseLib
PcdLib
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase

14
OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.uni Normal file
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// /** @file
// Platform Hook Library instance for 16550 Uart.
//
//
// Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
// Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
// **/
#string STR_MODULE_ABSTRACT #language en-US "Platform Hook Library instance for 16550 Uart."
#string STR_MODULE_DESCRIPTION #language en-US "Platform Hook Library instance for 16550 Uart."