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OvmfPkg: Add the way of HOBs in QemuFwCfgLibMmio

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Added the HOB methods to load and store the QEMU firmware configure
address, data address and DMA address, which are not enabled during the
DXE stage.

Build-tested only (with "ArmVirtQemu.dsc and RiscVVirtQemu.dsc").

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4755

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
This commit is contained in:
Chao Li
2024-04-30 15:48:09 +08:00
committed by mergify[bot]
parent 5e31c5666d
commit 748d57d40f
4 changed files with 216 additions and 27 deletions
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71
OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h
View File

@@ -12,9 +12,11 @@
#ifndef QEMU_FW_CFG_LIB_MMIO_INTERNAL_H_
#define QEMU_FW_CFG_LIB_MMIO_INTERNAL_H_
extern UINTN mFwCfgSelectorAddress;
extern UINTN mFwCfgDataAddress;
extern UINTN mFwCfgDmaAddress;
typedef struct {
UINTN FwCfgSelectorAddress;
UINTN FwCfgDataAddress;
UINTN FwCfgDmaAddress;
} QEMU_FW_CFG_RESOURCE;
/**
Reads firmware configuration bytes into a buffer
@@ -90,6 +92,69 @@ VOID (EFIAPI *InternalQemuFwCfgSkipBytes)(
IN UINTN Size
);
/**
Build firmware configure resource HOB.
@param[in] FwCfgResource A pointer to firmware configure resource.
@retval NULL
**/
VOID
QemuBuildFwCfgResourceHob (
IN QEMU_FW_CFG_RESOURCE *FwCfgResource
);
/**
Get firmware configure resource HOB.
@param VOID
@retval FwCfgResource The firmware configure resouce in HOB.
**/
QEMU_FW_CFG_RESOURCE *
QemuGetFwCfgResourceHob (
VOID
);
/**
To get firmware configure selector address.
@param VOID
@retval firmware configure selector address
**/
UINTN
EFIAPI
QemuGetFwCfgSelectorAddress (
VOID
);
/**
To get firmware configure Data address.
@param VOID
@retval firmware configure data address
**/
UINTN
EFIAPI
QemuGetFwCfgDataAddress (
VOID
);
/**
To get firmware DMA address.
@param VOID
@retval firmware DMA address
**/
UINTN
EFIAPI
QemuGetFwCfgDmaAddress (
VOID
);
/**
Slow READ_BYTES_FUNCTION.
**/