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+tianoc...@kernel.org> Cc: Laszlo Ersek <ler...@redhat.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Jordan Justen <jordan.l.jus...@intel.com> Cc: Gerd Hoffmann <kra...@redhat.com> Cc: Bibo Mao <maob...@loongson.cn> Cc: Dongyan Qian <qiandong...@loongson.cn> Signed-off-by: Chao Li <lic...@loongson.cn> Reviewed-by: Bibo Mao <maob...@loongson.cn> --- .../EarlyFdt16550SerialPortHookLib.c | 52 +++++++++++++++++++ .../EarlyFdt16550SerialPortHookLib.inf | 37 +++++++++++++ .../Fdt16550SerialPortHookLib.c | 39 ++++++++++++++ .../Fdt16550SerialPortHookLib.inf | 33 ++++++++++++ .../Fdt16550SerialPortHookLib.uni | 14 +++++ 5 files changed, 175 insertions(+) create mode 100644 OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c create mode 100644 OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf create mode 100644 OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.c create mode 100644 OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf create mode 100644 OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.uni diff --git a/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c new file mode 100644 index 0000000000..9f1fcc970a --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.c @@ -0,0 +1,52 @@ +/** @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; +} diff --git a/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf new file mode 100644 index 0000000000..55b0c03a01 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf @@ -0,0 +1,37 @@ +## @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 + FdtLib + FdtSerialPortAddressLib + +[Packages] + EmbeddedPkg/EmbeddedPkg.dec + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[Pcd] + gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress + gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase diff --git a/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.c b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.c new file mode 100644 index 0000000000..fd188f75b8 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.c @@ -0,0 +1,39 @@ +/** @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 <Library/PlatformHookLib.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); +} diff --git a/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf new file mode 100644 index 0000000000..b5fc03a284 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf @@ -0,0 +1,33 @@ +## @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 diff --git a/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.uni b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.uni new file mode 100644 index 0000000000..92eb2ed0b4 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.uni @@ -0,0 +1,14 @@ +// /** @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." -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#114554): https://edk2.groups.io/g/devel/message/114554 Mute This Topic: https://groups.io/mt/103971678/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
