[AMD Official Use Only - General]
Acked-by: Abner Chang <abner.chang@amd.com>
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Sunil V L
> via groups.io
> Sent: Saturday, October 15, 2022 12:48 AM
> To: devel@edk2.groups.io
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>; Jiewen Yao
> <jiewen.yao@intel.com>; Jordan Justen <jordan.l.justen@intel.com>; Gerd
> Hoffmann <kraxel@redhat.com>; Daniel Schaefer <git@danielschaefer.me>
> Subject: [edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH V4 06/34]
> OvmfPkg/PlatformInitLib: Add support for RISC-V
>
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> illa.tianocore.org%2Fshow_bug.cgi%3Fid%3D4076&data=05%7C01%7Ca
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>
> This is copied from
> edk2-platforms/Platform/RISC-V/PlatformPkg/Universal/FdtPeim
> but added as part of library instead of a separate module.
>
> 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: Daniel Schaefer <git@danielschaefer.me>
> Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
> ---
> OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf | 9 ++-
> OvmfPkg/Include/Library/PlatformInitLib.h | 6 ++
> OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c | 72
> ++++++++++++++++++++
> 3 files changed, 86 insertions(+), 1 deletion(-)
>
> diff --git a/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
> b/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
> index 5d31cad1b670..b3a69bf9582c 100644
> --- a/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
> +++ b/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
> @@ -19,7 +19,7 @@ [Defines]
> #
> # The following information is for reference only and not required by the
> build tools.
> #
> -# VALID_ARCHITECTURES = IA32 X64 EBC
> +# VALID_ARCHITECTURES = IA32 X64 EBC RISCV64
> #
>
> [Sources.IA32, Sources.X64]
> @@ -33,6 +33,9 @@ [Sources.IA32]
> [Sources.X64]
> Ia32X64/IntelTdx.c
>
> +[Sources.RISCV64]
> + RiscV64/PlatformPeiLib.c
> +
> [Packages]
> EmbeddedPkg/EmbeddedPkg.dec
> MdeModulePkg/MdeModulePkg.dec
> @@ -58,6 +61,10 @@ [LibraryClasses.IA32, LibraryClasses.X64]
> [LibraryClasses.X64]
> TdxLib
>
> +[LibraryClasses.RISCV64]
> + RiscVSbiLib
> + FdtLib
> +
> [Pcd]
> gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
>
> diff --git a/OvmfPkg/Include/Library/PlatformInitLib.h
> b/OvmfPkg/Include/Library/PlatformInitLib.h
> index c5234bf26d45..1b8d1fad3b49 100644
> --- a/OvmfPkg/Include/Library/PlatformInitLib.h
> +++ b/OvmfPkg/Include/Library/PlatformInitLib.h
> @@ -285,4 +285,10 @@ PlatformInitEmuVariableNvStore (
> IN VOID *EmuVariableNvStore
> );
>
> +EFI_STATUS
> +EFIAPI
> +PlatformPeim (
> + VOID
> + );
> +
> #endif // PLATFORM_INIT_LIB_H_
> diff --git a/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
> b/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
> new file mode 100644
> index 000000000000..266d5ddff58e
> --- /dev/null
> +++ b/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
> @@ -0,0 +1,72 @@
> +/** @file
> +The library call to pass the device tree to DXE via HOB.
> +
> +Copyright (c) 2021, Hewlett Packard Enterprise Development LP. All
> +rights reserved.<BR>
> +
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +//
> +//// The package level header files this module uses //// #include
> +<PiPei.h>
> +
> +#include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <Library/MemoryAllocationLib.h> #include
> +<Library/BaseRiscVSbiLib.h>
> +
> +#include <libfdt.h>
> +
> +#include <Guid/FdtHob.h>
> +
> +/**
> + @retval EFI_SUCCESS The address of FDT is passed in HOB.
> + EFI_UNSUPPORTED Can't locate FDT.
> +**/
> +EFI_STATUS
> +EFIAPI
> +PlatformPeim (
> + VOID
> + )
> +{
> + EFI_RISCV_FIRMWARE_CONTEXT *FirmwareContext;
> + VOID *FdtPointer;
> + VOID *Base;
> + VOID *NewBase;
> + UINTN FdtSize;
> + UINTN FdtPages;
> + UINT64 *FdtHobData;
> +
> + FirmwareContext = NULL;
> + GetFirmwareContextPointer (&FirmwareContext);
> +
> + if (FirmwareContext == NULL) {
> + DEBUG ((DEBUG_ERROR, "%a: Firmware Context is NULL\n",
> __FUNCTION__));
> + return EFI_UNSUPPORTED;
> + }
> +
> + FdtPointer = (VOID *)FirmwareContext->FlattenedDeviceTree;
> + if (FdtPointer == NULL) {
> + DEBUG ((DEBUG_ERROR, "%a: Invalid FDT pointer\n", __FUNCTION__));
> + return EFI_UNSUPPORTED;
> + }
> +
> + DEBUG ((DEBUG_INFO, "%a: Build FDT HOB - FDT at address: 0x%x \n",
> + __FUNCTION__, FdtPointer)); Base = FdtPointer; ASSERT (Base !=
> + NULL); ASSERT (fdt_check_header (Base) == 0);
> +
> + FdtSize = fdt_totalsize (Base);
> + FdtPages = EFI_SIZE_TO_PAGES (FdtSize); NewBase = AllocatePages
> + (FdtPages); ASSERT (NewBase != NULL); fdt_open_into (Base, NewBase,
> + EFI_PAGES_TO_SIZE (FdtPages));
> +
> + FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof *FdtHobData);
> ASSERT
> + (FdtHobData != NULL); *FdtHobData = (UINTN)NewBase;
> +
> + return EFI_SUCCESS;
> +}
> --
> 2.38.0
>
>
>
>
>
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