mirror of https://github.com/acidanthera/audk.git
127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/** @file
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*
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* Copyright (c) 2011, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef __BDSLINUXLOADER_H
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#define __BDSLINUXLOADER_H
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#define LINUX_ATAG_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxAtagMaxOffset))
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#define LINUX_KERNEL_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxKernelMaxOffset))
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#define ATAG_MAX_SIZE 0x3000
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/* ATAG : list of possible tags */
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#define ATAG_NONE 0x00000000
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#define ATAG_CORE 0x54410001
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#define ATAG_MEM 0x54410002
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#define ATAG_VIDEOTEXT 0x54410003
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#define ATAG_RAMDISK 0x54410004
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#define ATAG_INITRD2 0x54420005
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#define ATAG_SERIAL 0x54410006
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#define ATAG_REVISION 0x54410007
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#define ATAG_VIDEOLFB 0x54410008
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#define ATAG_CMDLINE 0x54410009
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#define ATAG_ARM_MP_CORE 0x5441000A
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/* structures for each atag */
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typedef struct {
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UINT32 size; /* length of tag in words including this header */
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UINT32 type; /* tag type */
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} LINUX_ATAG_HEADER;
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typedef struct {
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UINT32 flags;
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UINT32 pagesize;
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UINT32 rootdev;
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} LINUX_ATAG_CORE;
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typedef struct {
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UINT32 size;
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UINTN start;
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} LINUX_ATAG_MEM;
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typedef struct {
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UINT8 x;
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UINT8 y;
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UINT16 video_page;
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UINT8 video_mode;
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UINT8 video_cols;
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UINT16 video_ega_bx;
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UINT8 video_lines;
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UINT8 video_isvga;
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UINT16 video_points;
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} LINUX_ATAG_VIDEOTEXT;
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typedef struct {
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UINT32 flags;
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UINT32 size;
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UINTN start;
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} LINUX_ATAG_RAMDISK;
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typedef struct {
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UINT32 start;
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UINT32 size;
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} LINUX_ATAG_INITRD2;
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typedef struct {
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UINT32 low;
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UINT32 high;
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} LINUX_ATAG_SERIALNR;
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typedef struct {
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UINT32 rev;
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} LINUX_ATAG_REVISION;
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typedef struct {
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UINT16 lfb_width;
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UINT16 lfb_height;
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UINT16 lfb_depth;
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UINT16 lfb_linelength;
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UINT32 lfb_base;
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UINT32 lfb_size;
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UINT8 red_size;
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UINT8 red_pos;
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UINT8 green_size;
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UINT8 green_pos;
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UINT8 blue_size;
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UINT8 blue_pos;
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UINT8 rsvd_size;
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UINT8 rsvd_pos;
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} LINUX_ATAG_VIDEOLFB;
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typedef struct {
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CHAR8 cmdline[1];
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} LINUX_ATAG_CMDLINE;
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typedef struct {
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LINUX_ATAG_HEADER header;
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union {
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LINUX_ATAG_CORE core_tag;
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LINUX_ATAG_MEM mem_tag;
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LINUX_ATAG_VIDEOTEXT videotext_tag;
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LINUX_ATAG_RAMDISK ramdisk_tag;
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LINUX_ATAG_INITRD2 initrd2_tag;
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LINUX_ATAG_SERIALNR serialnr_tag;
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LINUX_ATAG_REVISION revision_tag;
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LINUX_ATAG_VIDEOLFB videolfb_tag;
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LINUX_ATAG_CMDLINE cmdline_tag;
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} body;
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} LINUX_ATAG;
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typedef VOID (*LINUX_KERNEL)(UINT32 Zero, UINT32 Arch, UINTN ParametersBase);
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#define next_tag_address(t) ((LINUX_ATAG*)((UINT32)(t) + (((t)->header.size) << 2) ))
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#define tag_size(type) ((UINT32)((sizeof(LINUX_ATAG_HEADER) + sizeof(type)) >> 2))
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#endif
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