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/** @file
*
* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
* which accompanies this distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/
#ifndef __LINUX_ATAG_H__
#define __LINUX_ATAG_H__
//
// ATAG Definitions
//
#define ATAG_MAX_SIZE 0x3000
/* ATAG : list of possible tags */
#define ATAG_NONE 0x00000000
#define ATAG_CORE 0x54410001
#define ATAG_MEM 0x54410002
#define ATAG_VIDEOTEXT 0x54410003
#define ATAG_RAMDISK 0x54410004
#define ATAG_INITRD2 0x54420005
#define ATAG_SERIAL 0x54410006
#define ATAG_REVISION 0x54410007
#define ATAG_VIDEOLFB 0x54410008
#define ATAG_CMDLINE 0x54410009
#define ATAG_ARM_MP_CORE 0x5441000A
#define next_tag_address(t) ((LINUX_ATAG*)((UINT32)(t) + (((t)->header.size) << 2) ))
#define tag_size(type) ((UINT32)((sizeof(LINUX_ATAG_HEADER) + sizeof(type)) >> 2))
typedef struct {
UINT32 size; /* length of tag in words including this header */
UINT32 type; /* tag type */
} LINUX_ATAG_HEADER;
typedef struct {
UINT32 flags;
UINT32 pagesize;
UINT32 rootdev;
} LINUX_ATAG_CORE;
typedef struct {
UINT32 size;
UINTN start;
} LINUX_ATAG_MEM;
typedef struct {
UINT8 x;
UINT8 y;
UINT16 video_page;
UINT8 video_mode;
UINT8 video_cols;
UINT16 video_ega_bx;
UINT8 video_lines;
UINT8 video_isvga;
UINT16 video_points;
} LINUX_ATAG_VIDEOTEXT;
typedef struct {
UINT32 flags;
UINT32 size;
UINTN start;
} LINUX_ATAG_RAMDISK;
typedef struct {
UINT32 start;
UINT32 size;
} LINUX_ATAG_INITRD2;
typedef struct {
UINT32 low;
UINT32 high;
} LINUX_ATAG_SERIALNR;
typedef struct {
UINT32 rev;
} LINUX_ATAG_REVISION;
typedef struct {
UINT16 lfb_width;
UINT16 lfb_height;
UINT16 lfb_depth;
UINT16 lfb_linelength;
UINT32 lfb_base;
UINT32 lfb_size;
UINT8 red_size;
UINT8 red_pos;
UINT8 green_size;
UINT8 green_pos;
UINT8 blue_size;
UINT8 blue_pos;
UINT8 rsvd_size;
UINT8 rsvd_pos;
} LINUX_ATAG_VIDEOLFB;
typedef struct {
CHAR8 cmdline[1];
} LINUX_ATAG_CMDLINE;
typedef struct {
LINUX_ATAG_HEADER header;
union {
LINUX_ATAG_CORE core_tag;
LINUX_ATAG_MEM mem_tag;
LINUX_ATAG_VIDEOTEXT videotext_tag;
LINUX_ATAG_RAMDISK ramdisk_tag;
LINUX_ATAG_INITRD2 initrd2_tag;
LINUX_ATAG_SERIALNR serialnr_tag;
LINUX_ATAG_REVISION revision_tag;
LINUX_ATAG_VIDEOLFB videolfb_tag;
LINUX_ATAG_CMDLINE cmdline_tag;
} body;
} LINUX_ATAG;
#endif /* __LINUX_ATAG_H__ */
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