mirror of https://github.com/acidanthera/audk.git
Update BiosVideo driver to produce GOP protocol but not UgaDraw protocol which is retired from UEFI specification.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7737 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
klu2
parent
fd677afe31
commit
0d92cdc200
File diff suppressed because it is too large
Load Diff
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@ -11,15 +11,15 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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BiosVideo.h
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UefiBiosVideo.h
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Abstract:
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Revision History
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--*/
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#ifndef _BIOS_UGA_H
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#define _BIOS_UGA_H
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#ifndef _BIOS_GRAPHICS_OUTPUT_H
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#define _BIOS_GRAPHICS_OUTPUT_H
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#include <Uefi.h>
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@ -34,24 +34,20 @@ Revision History
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#include <Protocol/UgaDraw.h>
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#include <Protocol/VgaMiniPort.h>
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#include <Protocol/Legacy8259.h>
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#include <Protocol/EdidActive.h>
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#include <Protocol/EdidDiscovered.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/LegacyBios.h>
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#include <Library/UefiLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DevicePathLib.h>
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#include <IndustryStandard/Pci22.h>
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#include "VesaBiosExtensions.h"
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//
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// Driver Produced Protocol Prototypes
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//
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//#include EFI_PROTOCOL_DEFINITION (DriverBinding)
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//#include EFI_PROTOCOL_DEFINITION (ComponentName)
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//#include EFI_PROTOCOL_DEFINITION (ComponentName2)
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//#include EFI_PROTOCOL_DEFINITION (UgaDraw)
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//#include EFI_PROTOCOL_DEFINITION (VgaMiniPort)
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//
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// Packed format support: The number of bits reserved for each of the colors and the actual
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@ -63,26 +59,29 @@ typedef struct {
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} BIOS_VIDEO_COLOR_PLACEMENT;
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//
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// BIOS UGA Draw Graphical Mode Data
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// BIOS Graphics Output Graphical Mode Data
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//
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typedef struct {
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UINT16 VbeModeNumber;
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UINT16 BytesPerScanLine;
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VOID *LinearFrameBuffer;
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UINTN FrameBufferSize;
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UINT32 HorizontalResolution;
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UINT32 VerticalResolution;
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UINT32 ColorDepth;
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UINT32 RefreshRate;
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UINT32 BitsPerPixel;
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BIOS_VIDEO_COLOR_PLACEMENT Red;
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BIOS_VIDEO_COLOR_PLACEMENT Green;
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BIOS_VIDEO_COLOR_PLACEMENT Blue;
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BIOS_VIDEO_COLOR_PLACEMENT Reserved;
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EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
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EFI_PIXEL_BITMASK PixelBitMask;
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} BIOS_VIDEO_MODE_DATA;
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//
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// BIOS UGA Device Structure
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// BIOS video child handle private data Structure
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//
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#define BIOS_VIDEO_DEV_SIGNATURE SIGNATURE_32 ('B', 'V', 'M', 'p')
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#define BIOS_VIDEO_DEV_SIGNATURE SIGNATURE_32 ('B', 'V', 'M', 'p')
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typedef struct {
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UINTN Signature;
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@ -92,30 +91,30 @@ typedef struct {
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// Consumed Protocols
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//
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EFI_PCI_IO_PROTOCOL *PciIo;
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//EFI_LEGACY_BIOS_THUNK_PROTOCOL *LegacyBios;
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EFI_LEGACY_8259_PROTOCOL *Legacy8259;
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//
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// Produced Protocols
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//
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EFI_UGA_DRAW_PROTOCOL UgaDraw;
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EFI_GRAPHICS_OUTPUT_PROTOCOL GraphicsOutput;
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EFI_EDID_DISCOVERED_PROTOCOL EdidDiscovered;
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EFI_EDID_ACTIVE_PROTOCOL EdidActive;
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EFI_VGA_MINI_PORT_PROTOCOL VgaMiniPort;
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//
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// General fields
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//
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EFI_EVENT ExitBootServicesEvent;
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BOOLEAN VgaCompatible;
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BOOLEAN ProduceUgaDraw;
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BOOLEAN ProduceGraphicsOutput;
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EFI_EVENT ExitBootServicesEvent;
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//
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// UGA Draw related fields
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// Graphics Output Protocol related fields
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//
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BOOLEAN HardwareNeedsStarting;
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UINTN CurrentMode;
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UINTN MaxMode;
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BIOS_VIDEO_MODE_DATA *ModeData;
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UINT8 *LineBuffer;
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EFI_UGA_PIXEL *VbeFrameBuffer;
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL *VbeFrameBuffer;
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UINT8 *VgaFrameBuffer;
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//
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@ -125,6 +124,7 @@ typedef struct {
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EFI_PHYSICAL_ADDRESS PagesBelow1MB; // Buffer for all VBE Information Blocks
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VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK *VbeInformationBlock; // 0x200 bytes. Must be allocated below 1MB
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VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK *VbeModeInformationBlock; // 0x100 bytes. Must be allocated below 1MB
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VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK *VbeEdidDataBlock; // 0x80 bytes. Must be allocated below 1MB
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VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK *VbeCrtcInformationBlock; // 59 bytes. Must be allocated below 1MB
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UINTN VbeSaveRestorePages; // Number of 4KB pages in VbeSaveRestoreBuffer
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EFI_PHYSICAL_ADDRESS VbeSaveRestoreBuffer; // Must be allocated below 1MB
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@ -134,10 +134,12 @@ typedef struct {
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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} BIOS_VIDEO_DEV;
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#define BIOS_VIDEO_DEV_FROM_UGA_DRAW_THIS(a) CR (a, BIOS_VIDEO_DEV, UgaDraw, BIOS_VIDEO_DEV_SIGNATURE)
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#define BIOS_VIDEO_DEV_FROM_PCI_IO_THIS(a) CR (a, BIOS_VIDEO_DEV, PciIo, BIOS_VIDEO_DEV_SIGNATURE)
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#define BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS(a) CR (a, BIOS_VIDEO_DEV, GraphicsOutput, BIOS_VIDEO_DEV_SIGNATURE)
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#define BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS(a) CR (a, BIOS_VIDEO_DEV, VgaMiniPort, BIOS_VIDEO_DEV_SIGNATURE)
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#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER 0xffff
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//
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// Global Variables
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//
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@ -156,23 +158,21 @@ BiosVideoDriverBindingSupported (
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Supported.
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Arguments:
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Routine Description:
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This - Pointer to driver binding protocol
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Controller - Controller handle to connect
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RemainingDevicePath - A pointer to the remaining portion of a device path
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Returns:
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GC_TODO: Add function description
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Arguments:
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This - GC_TODO: add argument description
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Controller - GC_TODO: add argument description
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RemainingDevicePath - GC_TODO: add argument description
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Returns:
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GC_TODO: add return values
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EFI_STATUS - EFI_SUCCESS:This controller can be managed by this driver,
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Otherwise, this controller cannot be managed by this driver
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--*/
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;
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@ -184,21 +184,21 @@ BiosVideoDriverBindingStart (
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Install UGA Draw Protocol onto VGA device handles
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Arguments:
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Routine Description:
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This - Pointer to driver binding protocol
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Controller - Controller handle to connect
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RemainingDevicePath - A pointer to the remaining portion of a device path
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Returns:
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GC_TODO: Add function description
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Arguments:
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This - GC_TODO: add argument description
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Controller - GC_TODO: add argument description
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RemainingDevicePath - GC_TODO: add argument description
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Returns:
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GC_TODO: add return values
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EFI_STATUS
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--*/
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;
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@ -211,23 +211,22 @@ BiosVideoDriverBindingStop (
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IN EFI_HANDLE *ChildHandleBuffer
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)
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/*++
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Routine Description:
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Stop.
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Arguments:
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Routine Description:
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This - Pointer to driver binding protocol
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Controller - Controller handle to connect
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NumberOfChilren - Number of children handle created by this driver
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ChildHandleBuffer - Buffer containing child handle created
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Returns:
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GC_TODO: Add function description
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Arguments:
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This - GC_TODO: add argument description
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Controller - GC_TODO: add argument description
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NumberOfChildren - GC_TODO: add argument description
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ChildHandleBuffer - GC_TODO: add argument description
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Returns:
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GC_TODO: add return values
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EFI_SUCCESS - Driver disconnected successfully from controller
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EFI_UNSUPPORTED - Cannot find BIOS_VIDEO_DEV structure
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--*/
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;
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@ -239,19 +238,19 @@ BiosVideoCheckForVbe (
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BIOS_VIDEO_DEV *BiosVideoPrivate
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)
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/*++
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Routine Description:
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Check for VBE device
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Arguments:
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BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure
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Returns:
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EFI_SUCCESS - VBE device found
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Routine Description:
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GC_TODO: Add function description
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Arguments:
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BiosVideoPrivate - GC_TODO: add argument description
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Returns:
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GC_TODO: add return values
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--*/
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;
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@ -260,112 +259,148 @@ BiosVideoCheckForVga (
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BIOS_VIDEO_DEV *BiosVideoPrivate
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)
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/*++
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Routine Description:
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Check for VGA device
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Routine Description:
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GC_TODO: Add function description
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Arguments:
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BiosVideoPrivate - GC_TODO: add argument description
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Returns:
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GC_TODO: add return values
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--*/
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;
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STATIC
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EFI_STATUS
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DeRegisterVideoChildHandle (
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EFI_DRIVER_BINDING_PROTOCOL *This,
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EFI_HANDLE Controller,
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EFI_HANDLE Handle
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)
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/*++
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Routine Description:
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Deregister an video child handle and free resources
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Arguments:
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This - Protocol instance pointer.
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Controller - Video controller handle
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Handle - Video child handle
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Returns:
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EFI_STATUS
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--*/
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;
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VOID
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BiosVideoDeviceReleaseResource (
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BIOS_VIDEO_DEV *BiosVideoChildPrivate
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)
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/*++
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Routing Description:
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Release resources of a video child device before stopping it.
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Arguments:
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BiosVideoChildPrivate - Video child device private data structure
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Returns:
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NONE
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---*/
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;
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//
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// BIOS Graphics Output Protocol functions
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//
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EFI_STATUS
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EFIAPI
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BiosVideoGraphicsOutputQueryMode (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN UINT32 ModeNumber,
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OUT UINTN *SizeOfInfo,
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OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
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)
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/*++
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Routine Description:
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Graphics Output protocol interface to get video mode
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Arguments:
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BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure
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This - Protocol instance pointer.
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ModeNumber - The mode number to return information on.
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Info - Caller allocated buffer that returns information about ModeNumber.
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SizeOfInfo - A pointer to the size, in bytes, of the Info buffer.
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Returns:
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EFI_SUCCESS - Standard VGA device found
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--*/
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;
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//
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// BIOS UGA Draw Protocol functions
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//
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EFI_STATUS
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EFIAPI
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BiosVideoUgaDrawGetMode (
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IN EFI_UGA_DRAW_PROTOCOL *This,
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OUT UINT32 *HorizontalResolution,
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OUT UINT32 *VerticalResolution,
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OUT UINT32 *ColorDepth,
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OUT UINT32 *RefreshRate
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)
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/*++
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Routine Description:
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UGA protocol interface to get video mode
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Arguments:
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This - Pointer to UGA draw protocol instance
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HorizontalResolution - Horizontal Resolution, in pixels
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VerticalResolution - Vertical Resolution, in pixels
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ColorDepth - Bit number used to represent color value of a pixel
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RefreshRate - Refresh rate, in Hertz
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Returns:
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EFI_DEVICE_ERROR - Hardware need starting
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EFI_INVALID_PARAMETER - Invalid parameter passed in
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EFI_SUCCESS - Video mode query successfully
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EFI_SUCCESS - Mode information returned.
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EFI_BUFFER_TOO_SMALL - The Info buffer was too small.
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EFI_DEVICE_ERROR - A hardware error occurred trying to retrieve the video mode.
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EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
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EFI_INVALID_PARAMETER - One of the input args was NULL.
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--*/
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;
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EFI_STATUS
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EFIAPI
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BiosVideoUgaDrawSetMode (
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IN EFI_UGA_DRAW_PROTOCOL *This,
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IN UINT32 HorizontalResolution,
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IN UINT32 VerticalResolution,
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IN UINT32 ColorDepth,
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IN UINT32 RefreshRate
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BiosVideoGraphicsOutputSetMode (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
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IN UINT32 ModeNumber
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)
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/*++
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Routine Description:
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UGA draw protocol interface to set video mode
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Graphics Output protocol interface to set video mode
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Arguments:
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Arguments:
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This - Protocol instance pointer.
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ModeNumber - The mode number to be set.
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This - Pointer to UGA draw protocol instance
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HorizontalResolution - Horizontal Resolution, in pixels
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VerticalResolution - Vertical Resolution, in pixels
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ColorDepth - Bit number used to represent color value of a pixel
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RefreshRate - Refresh rate, in Hertz
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Returns:
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EFI_DEVICE_ERROR - Device error
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EFI_SUCCESS - Video mode set successfully
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EFI_UNSUPPORTED - Cannot support this video mode
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Returns:
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EFI_SUCCESS - Graphics mode was changed.
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EFI_DEVICE_ERROR - The device had an error and could not complete the request.
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EFI_UNSUPPORTED - ModeNumber is not supported by this device.
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--*/
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;
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EFI_STATUS
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EFIAPI
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BiosVideoUgaDrawVbeBlt (
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IN EFI_UGA_DRAW_PROTOCOL *This,
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IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
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IN EFI_UGA_BLT_OPERATION BltOperation,
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IN UINTN SourceX,
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IN UINTN SourceY,
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IN UINTN DestinationX,
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IN UINTN DestinationY,
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IN UINTN Width,
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IN UINTN Height,
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IN UINTN Delta
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BiosVideoGraphicsOutputVbeBlt (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
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IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
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IN UINTN SourceX,
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IN UINTN SourceY,
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IN UINTN DestinationX,
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IN UINTN DestinationY,
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IN UINTN Width,
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IN UINTN Height,
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IN UINTN Delta
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)
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/*++
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Routine Description:
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UGA draw protocol instance to block transfer for VBE device
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Graphics Output protocol instance to block transfer for VBE device
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Arguments:
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This - Pointer to UGA draw protocol instance
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This - Pointer to Graphics Output protocol instance
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BltBuffer - The data to transfer to screen
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BltOperation - The operation to perform
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SourceX - The X coordinate of the source for BltOperation
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@ -374,9 +409,9 @@ Arguments:
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DestinationY - The Y coordinate of the destination for BltOperation
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Width - The width of a rectangle in the blt rectangle in pixels
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Height - The height of a rectangle in the blt rectangle in pixels
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Delta - Not used for EfiUgaVideoFill and EfiUgaVideoToVideo operation.
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Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.
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If a Delta of 0 is used, the entire BltBuffer will be operated on.
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If a subrectangle of the BltBuffer is used, then Delta represents
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If a subrectangle of the BltBuffer is used, then Delta represents
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the number of bytes in a row of the BltBuffer.
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Returns:
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|
|
@ -389,27 +424,27 @@ Returns:
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EFI_STATUS
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EFIAPI
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BiosVideoUgaDrawVgaBlt (
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IN EFI_UGA_DRAW_PROTOCOL *This,
|
||||
IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
|
||||
IN EFI_UGA_BLT_OPERATION BltOperation,
|
||||
IN UINTN SourceX,
|
||||
IN UINTN SourceY,
|
||||
IN UINTN DestinationX,
|
||||
IN UINTN DestinationY,
|
||||
IN UINTN Width,
|
||||
IN UINTN Height,
|
||||
IN UINTN Delta
|
||||
BiosVideoGraphicsOutputVgaBlt (
|
||||
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
|
||||
IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
|
||||
IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
|
||||
IN UINTN SourceX,
|
||||
IN UINTN SourceY,
|
||||
IN UINTN DestinationX,
|
||||
IN UINTN DestinationY,
|
||||
IN UINTN Width,
|
||||
IN UINTN Height,
|
||||
IN UINTN Delta
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
UGA draw protocol instance to block transfer for VGA device
|
||||
Grahpics Output protocol instance to block transfer for VGA device
|
||||
|
||||
Arguments:
|
||||
|
||||
This - Pointer to UGA draw protocol instance
|
||||
This - Pointer to Grahpics Output protocol instance
|
||||
BltBuffer - The data to transfer to screen
|
||||
BltOperation - The operation to perform
|
||||
SourceX - The X coordinate of the source for BltOperation
|
||||
|
|
@ -418,9 +453,9 @@ Arguments:
|
|||
DestinationY - The Y coordinate of the destination for BltOperation
|
||||
Width - The width of a rectangle in the blt rectangle in pixels
|
||||
Height - The height of a rectangle in the blt rectangle in pixels
|
||||
Delta - Not used for EfiUgaVideoFill and EfiUgaVideoToVideo operation.
|
||||
Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.
|
||||
If a Delta of 0 is used, the entire BltBuffer will be operated on.
|
||||
If a subrectangle of the BltBuffer is used, then Delta represents
|
||||
If a subrectangle of the BltBuffer is used, then Delta represents
|
||||
the number of bytes in a row of the BltBuffer.
|
||||
|
||||
Returns:
|
||||
|
|
@ -508,4 +543,22 @@ BiosVideoIsVga (
|
|||
|
||||
#define VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER 0x08
|
||||
|
||||
VOID
|
||||
InitializeBiosIntCaller (
|
||||
IN BIOS_VIDEO_DEV *BiosDev
|
||||
);
|
||||
|
||||
VOID
|
||||
InitializeInterruptRedirection (
|
||||
IN BIOS_VIDEO_DEV *BiosDev
|
||||
);
|
||||
|
||||
BOOLEAN
|
||||
EFIAPI
|
||||
LegacyBiosInt86 (
|
||||
IN BIOS_VIDEO_DEV *BiosDev,
|
||||
IN UINT8 BiosInt,
|
||||
IN EFI_IA32_REGISTER_SET *Regs
|
||||
);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -39,14 +39,18 @@
|
|||
UefiBootServicesTableLib
|
||||
BaseMemoryLib
|
||||
UefiDriverEntryPoint
|
||||
DevicePathLib
|
||||
|
||||
[Sources.common]
|
||||
BiosVideo.h
|
||||
BiosVideo.c
|
||||
ComponentName.c
|
||||
VesaBiosExtensions.h
|
||||
|
||||
LegacyBiosThunk.c
|
||||
|
||||
[Protocols]
|
||||
gEfiPciIoProtocolGuid
|
||||
gEfiVgaMiniPortProtocolGuid
|
||||
gEfiLegacy8259ProtocolGuid
|
||||
gEfiEdidDiscoveredProtocolGuid
|
||||
gEfiEdidActiveProtocolGuid
|
||||
|
|
@ -0,0 +1,224 @@
|
|||
|
||||
#include "BiosVideo.h"
|
||||
|
||||
#define EFI_CPU_EFLAGS_IF 0x200
|
||||
|
||||
THUNK_CONTEXT mThunkContext;
|
||||
|
||||
VOID
|
||||
InitializeBiosIntCaller (
|
||||
IN BIOS_VIDEO_DEV *BiosDev
|
||||
)
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
UINT32 RealModeBufferSize;
|
||||
UINT32 ExtraStackSize;
|
||||
EFI_PHYSICAL_ADDRESS LegacyRegionBase;
|
||||
|
||||
//
|
||||
// Get LegacyRegion
|
||||
//
|
||||
AsmGetThunk16Properties (&RealModeBufferSize, &ExtraStackSize);
|
||||
|
||||
LegacyRegionBase = 0x100000;
|
||||
Status = gBS->AllocatePages (
|
||||
AllocateMaxAddress,
|
||||
EfiACPIMemoryNVS,
|
||||
EFI_SIZE_TO_PAGES(RealModeBufferSize + ExtraStackSize + 200),
|
||||
&LegacyRegionBase
|
||||
);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
mThunkContext.RealModeBuffer = (VOID*)(UINTN)LegacyRegionBase;
|
||||
mThunkContext.RealModeBufferSize = EFI_PAGES_TO_SIZE (RealModeBufferSize);
|
||||
mThunkContext.ThunkAttributes = 3;
|
||||
AsmPrepareThunk16(&mThunkContext);
|
||||
|
||||
}
|
||||
|
||||
VOID
|
||||
InitializeInterruptRedirection (
|
||||
IN BIOS_VIDEO_DEV *BiosDev
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Initialize interrupt redirection code and entries, because
|
||||
IDT Vectors 0x68-0x6f must be redirected to IDT Vectors 0x08-0x0f.
|
||||
Or the interrupt will lost when we do thunk.
|
||||
NOTE: We do not reset 8259 vector base, because it will cause pending
|
||||
interrupt lost.
|
||||
|
||||
Arguments:
|
||||
NONE
|
||||
|
||||
Returns:
|
||||
NONE
|
||||
--*/
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
EFI_PHYSICAL_ADDRESS LegacyRegionBase;
|
||||
UINTN LegacyRegionLength;
|
||||
UINT32 *IdtArray;
|
||||
UINTN Index;
|
||||
UINT8 ProtectedModeBaseVector;
|
||||
UINT32 InterruptRedirectionCode[] = {
|
||||
0x90CF08CD, // INT8; IRET; NOP
|
||||
0x90CF09CD, // INT9; IRET; NOP
|
||||
0x90CF0ACD, // INTA; IRET; NOP
|
||||
0x90CF0BCD, // INTB; IRET; NOP
|
||||
0x90CF0CCD, // INTC; IRET; NOP
|
||||
0x90CF0DCD, // INTD; IRET; NOP
|
||||
0x90CF0ECD, // INTE; IRET; NOP
|
||||
0x90CF0FCD // INTF; IRET; NOP
|
||||
};
|
||||
|
||||
//
|
||||
// Get LegacyRegion
|
||||
//
|
||||
LegacyRegionLength = sizeof(InterruptRedirectionCode);
|
||||
LegacyRegionBase = 0x100000;
|
||||
Status = gBS->AllocatePages (
|
||||
AllocateMaxAddress,
|
||||
EfiACPIMemoryNVS,
|
||||
EFI_SIZE_TO_PAGES(LegacyRegionLength),
|
||||
&LegacyRegionBase
|
||||
);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
//
|
||||
// Copy code to legacy region
|
||||
//
|
||||
CopyMem ((VOID *)(UINTN)LegacyRegionBase, InterruptRedirectionCode, sizeof (InterruptRedirectionCode));
|
||||
|
||||
//
|
||||
// Get VectorBase, it should be 0x68
|
||||
//
|
||||
Status = BiosDev->Legacy8259->GetVector (BiosDev->Legacy8259, Efi8259Irq0, &ProtectedModeBaseVector);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
//
|
||||
// Patch IVT 0x68 ~ 0x6f
|
||||
//
|
||||
IdtArray = (UINT32 *) 0;
|
||||
for (Index = 0; Index < 8; Index++) {
|
||||
IdtArray[ProtectedModeBaseVector + Index] = ((EFI_SEGMENT (LegacyRegionBase + Index * 4)) << 16) | (EFI_OFFSET (LegacyRegionBase + Index * 4));
|
||||
}
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
BOOLEAN
|
||||
EFIAPI
|
||||
LegacyBiosInt86 (
|
||||
IN BIOS_VIDEO_DEV *BiosDev,
|
||||
IN UINT8 BiosInt,
|
||||
IN EFI_IA32_REGISTER_SET *Regs
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Thunk to 16-bit real mode and execute a software interrupt with a vector
|
||||
of BiosInt. Regs will contain the 16-bit register context on entry and
|
||||
exit.
|
||||
|
||||
Arguments:
|
||||
This - Protocol instance pointer.
|
||||
BiosInt - Processor interrupt vector to invoke
|
||||
Reg - Register contexted passed into (and returned) from thunk to
|
||||
16-bit mode
|
||||
|
||||
Returns:
|
||||
FALSE - Thunk completed, and there were no BIOS errors in the target code.
|
||||
See Regs for status.
|
||||
TRUE - There was a BIOS erro in the target code.
|
||||
|
||||
--*/
|
||||
{
|
||||
UINTN Status;
|
||||
UINTN Eflags;
|
||||
IA32_REGISTER_SET ThunkRegSet;
|
||||
BOOLEAN Ret;
|
||||
UINT16 *Stack16;
|
||||
|
||||
Regs->X.Flags.Reserved1 = 1;
|
||||
Regs->X.Flags.Reserved2 = 0;
|
||||
Regs->X.Flags.Reserved3 = 0;
|
||||
Regs->X.Flags.Reserved4 = 0;
|
||||
Regs->X.Flags.IOPL = 3;
|
||||
Regs->X.Flags.NT = 0;
|
||||
Regs->X.Flags.IF = 1;
|
||||
Regs->X.Flags.TF = 0;
|
||||
Regs->X.Flags.CF = 0;
|
||||
|
||||
ZeroMem (&ThunkRegSet, sizeof (ThunkRegSet));
|
||||
ThunkRegSet.E.EDI = Regs->E.EDI;
|
||||
ThunkRegSet.E.ESI = Regs->E.ESI;
|
||||
ThunkRegSet.E.EBP = Regs->E.EBP;
|
||||
ThunkRegSet.E.EBX = Regs->E.EBX;
|
||||
ThunkRegSet.E.EDX = Regs->E.EDX;
|
||||
ThunkRegSet.E.ECX = Regs->E.ECX;
|
||||
ThunkRegSet.E.EAX = Regs->E.EAX;
|
||||
ThunkRegSet.E.DS = Regs->E.DS;
|
||||
ThunkRegSet.E.ES = Regs->E.ES;
|
||||
|
||||
CopyMem (&(ThunkRegSet.E.EFLAGS), &(Regs->E.EFlags), sizeof (UINT32));
|
||||
|
||||
//
|
||||
// The call to Legacy16 is a critical section to EFI
|
||||
//
|
||||
Eflags = AsmReadEflags ();
|
||||
if ((Eflags | EFI_CPU_EFLAGS_IF) != 0) {
|
||||
DisableInterrupts ();
|
||||
}
|
||||
|
||||
//
|
||||
// Set Legacy16 state. 0x08, 0x70 is legacy 8259 vector bases.
|
||||
//
|
||||
Status = BiosDev->Legacy8259->SetMode (BiosDev->Legacy8259, Efi8259LegacyMode, NULL, NULL);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
Stack16 = (UINT16 *)((UINT8 *) mThunkContext.RealModeBuffer + mThunkContext.RealModeBufferSize - sizeof (UINT16));
|
||||
Stack16 -= sizeof (ThunkRegSet.E.EFLAGS) / sizeof (UINT16);
|
||||
CopyMem (Stack16, &ThunkRegSet.E.EFLAGS, sizeof (ThunkRegSet.E.EFLAGS));
|
||||
|
||||
ThunkRegSet.E.SS = (UINT16) (((UINTN) Stack16 >> 16) << 12);
|
||||
ThunkRegSet.E.ESP = (UINT16) (UINTN) Stack16;
|
||||
ThunkRegSet.E.Eip = (UINT16)((UINT32 *)NULL)[BiosInt];
|
||||
ThunkRegSet.E.CS = (UINT16)(((UINT32 *)NULL)[BiosInt] >> 16);
|
||||
mThunkContext.RealModeState = &ThunkRegSet;
|
||||
AsmThunk16 (&mThunkContext);
|
||||
|
||||
//
|
||||
// Restore protected mode interrupt state
|
||||
//
|
||||
Status = BiosDev->Legacy8259->SetMode (BiosDev->Legacy8259, Efi8259ProtectedMode, NULL, NULL);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
//
|
||||
// End critical section
|
||||
//
|
||||
if ((Eflags | EFI_CPU_EFLAGS_IF) != 0) {
|
||||
EnableInterrupts ();
|
||||
}
|
||||
|
||||
Regs->E.EDI = ThunkRegSet.E.EDI;
|
||||
Regs->E.ESI = ThunkRegSet.E.ESI;
|
||||
Regs->E.EBP = ThunkRegSet.E.EBP;
|
||||
Regs->E.EBX = ThunkRegSet.E.EBX;
|
||||
Regs->E.EDX = ThunkRegSet.E.EDX;
|
||||
Regs->E.ECX = ThunkRegSet.E.ECX;
|
||||
Regs->E.EAX = ThunkRegSet.E.EAX;
|
||||
Regs->E.SS = ThunkRegSet.E.SS;
|
||||
Regs->E.CS = ThunkRegSet.E.CS;
|
||||
Regs->E.DS = ThunkRegSet.E.DS;
|
||||
Regs->E.ES = ThunkRegSet.E.ES;
|
||||
|
||||
CopyMem (&(Regs->E.EFlags), &(ThunkRegSet.E.EFLAGS), sizeof (UINT32));
|
||||
|
||||
Ret = (BOOLEAN) (Regs->E.EFlags.CF == 1);
|
||||
|
||||
return Ret;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue