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Diffstat (limited to 'ArmPkg/Library/BdsLib/BdsLinuxLoader.h')
| -rw-r--r-- | ArmPkg/Library/BdsLib/BdsLinuxLoader.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/ArmPkg/Library/BdsLib/BdsLinuxLoader.h b/ArmPkg/Library/BdsLib/BdsLinuxLoader.h new file mode 100644 index 0000000000..2869f652f8 --- /dev/null +++ b/ArmPkg/Library/BdsLib/BdsLinuxLoader.h @@ -0,0 +1,165 @@ +/** @file +* +* Copyright (c) 2011, 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 __BDSLINUXLOADER_H +#define __BDSLINUXLOADER_H + +#define ATAG_MAX_SIZE 0x4000 +//PcdKernelParamsMaxMemorySize + +/* 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 + +// Some system addresses +// These should probably come from the platform header file or from pcd values +#define DRAM_BASE 0x10000000 +#define ZIMAGE_LOAD_ADDRESS (DRAM_BASE + 0x8000) +#define INITRD_LOAD_ADDRESS (DRAM_BASE + 0x800000) + +#define SIZE_1B 0x00000001 +#define SIZE_2B 0x00000002 +#define SIZE_4B 0x00000004 +#define SIZE_8B 0x00000008 +#define SIZE_16B 0x00000010 +#define SIZE_32B 0x00000020 +#define SIZE_64B 0x00000040 +#define SIZE_128B 0x00000080 +#define SIZE_256B 0x00000100 +#define SIZE_512B 0x00000200 +#define SIZE_1KB 0x00000400 +#define SIZE_2KB 0x00000800 +#define SIZE_4KB 0x00001000 +#define SIZE_8KB 0x00002000 +#define SIZE_16KB 0x00004000 +#define SIZE_32KB 0x00008000 +#define SIZE_64KB 0x00010000 +#define SIZE_128KB 0x00020000 +#define SIZE_256KB 0x00040000 +#define SIZE_512KB 0x00080000 +#define SIZE_1MB 0x00100000 +#define SIZE_2MB 0x00200000 +#define SIZE_4MB 0x00400000 +#define SIZE_8MB 0x00800000 +#define SIZE_16MB 0x01000000 +#define SIZE_32MB 0x02000000 +#define SIZE_64MB 0x04000000 +#define SIZE_100MB 0x06400000 +#define SIZE_128MB 0x08000000 +#define SIZE_256MB 0x10000000 +#define SIZE_512MB 0x20000000 +#define SIZE_1GB 0x40000000 +#define SIZE_2GB 0x80000000 + +/* structures for each atag */ +struct atag_header { + UINT32 size; /* length of tag in words including this header */ + UINT32 type; /* tag type */ +}; + +struct atag_core { + UINT32 flags; + UINT32 pagesize; + UINT32 rootdev; +}; + +struct atag_mem { + UINT32 size; + UINTN start; +}; + +struct atag_videotext { + 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; +}; + +struct atag_ramdisk { + UINT32 flags; + UINT32 size; + UINTN start; +}; + +struct atag_initrd2 { + UINT32 start; + UINT32 size; +}; + +struct atag_serialnr { + UINT32 low; + UINT32 high; +}; + +struct atag_revision { + UINT32 rev; +}; + +struct atag_videolfb { + 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; +}; + +struct atag_cmdline { + CHAR8 cmdline[1]; +}; + +struct atag { + struct atag_header header; + union { + struct atag_core core_tag; + struct atag_mem mem_tag; + struct atag_videotext videotext_tag; + struct atag_ramdisk ramdisk_tag; + struct atag_initrd2 initrd2_tag; + struct atag_serialnr serialnr_tag; + struct atag_revision revision_tag; + struct atag_videolfb videolfb_tag; + struct atag_cmdline cmdline_tag; + } body; +}; + +#define next_tag_address(t) ((struct atag *)((UINT32)(t) + (((t)->header.size) << 2) )) +#define tag_size(type) ((UINT32)((sizeof(struct atag_header) + sizeof(struct type)) >> 2)) + +STATIC struct atag *Params; /* used to point at the current tag */ + +#endif + |