8c00aba8c4
This is largely the work from the projects/uefi branch, with some additional refinements. This is derived from (and replaces) the original i386 efi implementation; i386 support will be restored later. Specific revisions of note from projects/uefi: r247380: Adjust our load device when we boot from CD under UEFI. The process for booting from a CD under UEFI involves adding a FAT filesystem containing your loader code as an El Torito boot image. When UEFI detects this, it provides a block IO instance that points at the FAT filesystem as a child of the device that represents the CD itself. The problem being that the CD device is flagged as a "raw device" while the boot image is flagged as a "logical partition". The existing EFI partition code only looks for logical partitions and so the CD filesystem was rendered invisible. To fix this, check the type of each block IO device. If it's found to be a CD, and thus an El Torito boot image, look up its parent device and add that instead so that the loader will then load the kernel from the CD filesystem. This is done by using the handle for the boot filesystem as an alias. Something similar to this will be required for booting from other media as well as the loader will live in the EFI system partition, not on the partition containing the kernel. r246231: Add necessary code to hand off from loader to an amd64 kernel. r246335: Grab the EFI memory map and store it as module metadata on the kernel. This is the same approach used to provide the BIOS SMAP to the kernel. r246336: Pass the ACPI table metadata via hints so the kernel ACPI code can find them. r246608: Rework copy routines to ensure we always use memory allocated via EFI. The previous code assumed it could copy wherever it liked. This is not the case. The approach taken by this code is pretty ham-fisted in that it simply allocates a large (32MB) buffer area and stages into that, then copies the whole area into place when it's time to execute. A more elegant solution could be used but this works for now. r247214: Fix a number of problems preventing proper handover to the kernel. There were two issues at play here. Firstly, there was nothing preventing UEFI from placing the loader code above 1GB in RAM. This meant that when we switched in the page tables the kernel expects to be running on, we are suddenly unmapped and things no longer work. We solve this by making our trampoline code not dependent on being at any given position and simply copying it to a "safe" location before calling it. Secondly, UEFI could allocate our stack wherever it wants. As it happened on my PC, that was right where I was copying the kernel to. This did not cause happiness. The solution to this was to also switch to a temporary stack in a safe location before performing the final copy of the loaded kernel. r246231: Add necessary code to hand off from loader to an amd64 kernel. r246335: Grab the EFI memory map and store it as module metadata on the kernel. This is the same approach used to provide the BIOS SMAP to the kernel. r246336: Pass the ACPI table metadata via hints so the kernel ACPI code can find them. r246608: Rework copy routines to ensure we always use memory allocated via EFI. The previous code assumed it could copy wherever it liked. This is not the case. The approach taken by this code is pretty ham-fisted in that it simply allocates a large (32MB) buffer area and stages into that, then copies the whole area into place when it's time to execute. A more elegant solution could be used but this works for now. r247214: Fix a number of problems preventing proper handover to the kernel. There were two issues at play here. Firstly, there was nothing preventing UEFI from placing the loader code above 1GB in RAM. This meant that when we switched in the page tables the kernel expects to be running on, we are suddenly unmapped and things no longer work. We solve this by making our trampoline code not dependent on being at any given position and simply copying it to a "safe" location before calling it. Secondly, UEFI could allocate our stack wherever it wants. As it happened on my PC, that was right where I was copying the kernel to. This did not cause happiness. The solution to this was to also switch to a temporary stack in a safe location before performing the final copy of the loaded kernel. r247216: Use the UEFI Graphics Output Protocol to get the parameters of the framebuffer. Sponsored by: The FreeBSD Foundation
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/* $FreeBSD$ */
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/*++
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Copyright (c) 1999 - 2002 Intel Corporation. All rights reserved
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This software and associated documentation (if any) is furnished
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under a license and may only be used or copied in accordance
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with the terms of the license. Except as permitted by such
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license, no part of this software or documentation may be
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reproduced, stored in a retrieval system, or transmitted in any
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form or by any means without the express written consent of
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Intel Corporation.
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Module Name:
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efigop.h
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Abstract:
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Info about framebuffers
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Revision History
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--*/
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#ifndef _EFIGOP_H
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#define _EFIGOP_H
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#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
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{ 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, \
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0x51, 0x6a }
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INTERFACE_DECL(_EFI_GRAPHICS_OUTPUT);
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typedef struct {
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UINT32 RedMask;
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UINT32 GreenMask;
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UINT32 BlueMask;
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UINT32 ReservedMask;
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} EFI_PIXEL_BITMASK;
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typedef enum {
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PixelRedGreenBlueReserved8BitPerColor,
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PixelBlueGreenRedReserved8BitPerColor,
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PixelBitMask,
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PixelBltOnly,
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PixelFormatMax,
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} EFI_GRAPHICS_PIXEL_FORMAT;
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typedef struct {
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UINT32 Version;
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UINT32 HorizontalResolution;
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UINT32 VerticalResolution;
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EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
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EFI_PIXEL_BITMASK PixelInformation;
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UINT32 PixelsPerScanLine;
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} EFI_GRAPHICS_OUTPUT_MODE_INFORMATION;
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typedef struct {
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UINT32 MaxMode;
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UINT32 Mode;
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EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
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UINTN SizeOfInfo;
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EFI_PHYSICAL_ADDRESS FrameBufferBase;
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UINTN FrameBufferSize;
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} EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE) (
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IN struct _EFI_GRAPHICS_OUTPUT *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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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE) (
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IN struct _EFI_GRAPHICS_OUTPUT *This,
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IN UINT32 ModeNumber
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);
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typedef struct {
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UINT8 Blue;
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UINT8 Green;
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UINT8 Red;
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UINT8 Reserved;
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} EFI_GRAPHICS_OUTPUT_BLT_PIXEL;
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typedef enum {
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EfiBltVideoFill,
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EfiBltVideoToBltBuffer,
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EfiBltBufferToVideo,
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EfiBltVideoToVideo,
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EfiGraphcisOutputBltOperationMax,
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} EFI_GRAPHICS_OUTPUT_BLT_OPERATION;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT) (
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IN struct _EFI_GRAPHICS_OUTPUT *This,
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IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
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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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typedef struct _EFI_GRAPHICS_OUTPUT {
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EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode;
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EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode;
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EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt;
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EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode;
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} EFI_GRAPHICS_OUTPUT;
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#endif /* _EFIGOP_H */
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