| /* Copyright (c) 2010-2011 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Data structure definitions for firmware screen block (BMPBLOCK). |
| * |
| * The BmpBlock structure looks like: |
| * +-----------------------------------------+ |
| * | BmpBlock Header | |
| * +-----------------------------------------+ |
| * | ScreenLayout[0] | \ |
| * +-----------------------------------------+ | |
| * | ScreenLayout[1] | | |
| * +-----------------------------------------+ Localization[0] |
| * | ... | | |
| * +-----------------------------------------+ | |
| * | ScreenLayout[number_of_screenlayouts-1] | / |
| * +-----------------------------------------+ |
| * | ScreenLayout[0] | \ |
| * +-----------------------------------------+ Localization[1] |
| * | ... | / |
| * +-----------------------------------------+ ... |
| * | ScreenLayout[0] | \ |
| * +-----------------------------------------+ Localization[ |
| * | ... | / number_of_localizations-1] |
| * +-----------------------------------------+ |
| * | ImageInfo[0] | |
| * +-----------------------------------------+ |
| * | Image Content | |
| * +-----------------------------------------+ |
| * | ImageInfo[2] | ImageInfo is 4-byte aligned. |
| * +-----------------------------------------+ |
| * | Image Content | |
| * +-----------------------------------------+ |
| * | ... | |
| * +-----------------------------------------+ |
| * | ImageInfo[number_fo_images-1] | |
| * +-----------------------------------------+ |
| * | Image Content | |
| * +-----------------------------------------+ |
| * |
| */ |
| |
| #ifndef VBOOT_REFERENCE_BMPBLK_HEADER_H_ |
| #define VBOOT_REFERENCE_BMPBLK_HEADER_H_ |
| |
| #include "sysincludes.h" |
| |
| __pragma(pack(push, 1)) /* Support packing for MSVC. */ |
| |
| #define BMPBLOCK_SIGNATURE "$BMP" |
| #define BMPBLOCK_SIGNATURE_SIZE (4) |
| |
| #define BMPBLOCK_MAJOR_VERSION (0x0001) |
| #define BMPBLOCK_MINOR_VERSION (0x0000) |
| |
| #define MAX_IMAGE_IN_LAYOUT (8) |
| |
| /* BMPBLOCK header, describing how many screen layouts and image infos */ |
| typedef struct BmpBlockHeader { |
| uint8_t signature[BMPBLOCK_SIGNATURE_SIZE]; /* BMPBLOCK_SIGNATURE $BMP */ |
| uint16_t major_version; /* see BMPBLOCK_MAJOR_VER */ |
| uint16_t minor_version; /* see BMPBLOCK_MINOR_VER */ |
| uint32_t number_of_localizations; /* Number of localizations */ |
| uint32_t number_of_screenlayouts; /* Number of screen layouts in each |
| * localization */ |
| uint32_t number_of_imageinfos; /* Number of image infos */ |
| uint32_t reserved[3]; |
| } __attribute__((packed)) BmpBlockHeader; |
| |
| /* Screen layout, describing how to stack multiple images on screen */ |
| typedef struct ScreenLayout { |
| struct { |
| uint32_t x; /* X-offset of the image to be rendered */ |
| uint32_t y; /* Y-offset of the image to be rendered */ |
| uint32_t image_info_offset; /* Offset of image info from start of |
| * BMPBLOCK. 0 means end of it. */ |
| } images[MAX_IMAGE_IN_LAYOUT]; /* Images contained in the screen. Will be |
| * rendered from 0 to (number_of_images-1). */ |
| } __attribute__((packed)) ScreenLayout; |
| |
| /* Constants for screen index */ |
| typedef enum ScreenIndex { |
| SCREEN_DEVELOPER_MODE = 0, |
| SCREEN_RECOVERY_MODE, |
| SCREEN_RECOVERY_NO_OS, |
| SCREEN_RECOVERY_MISSING_OS, |
| MAX_VALID_SCREEN_INDEX, |
| SCREEN_BLANK = ~0UL, |
| } ScreenIndex; |
| |
| /* Image info, describing the information of the image block */ |
| typedef struct ImageInfo { |
| uint32_t tag; /* Tag it as a special image, like HWID */ |
| uint32_t width; /* Width of the image */ |
| uint32_t height; /* Height of the image */ |
| uint32_t format; /* File format of the image */ |
| uint32_t compression; /* Compression method for the image file */ |
| uint32_t original_size; /* Size of the original uncompressed image */ |
| uint32_t compressed_size; /* Size of the compressed image */ |
| uint32_t reserved; |
| /* NOTE: actual image content follows immediately */ |
| } __attribute__((packed)) ImageInfo; |
| |
| /* Constants for ImageInfo.tag */ |
| typedef enum ImageTag { |
| TAG_NONE = 0, |
| TAG_HWID, |
| } ImageTag; |
| |
| /* Constants for ImageInfo.format */ |
| typedef enum ImageFormat { |
| FORMAT_INVALID = 0, |
| FORMAT_BMP, |
| } ImageFormat; |
| |
| /* Constants for ImageInfo.compression */ |
| typedef enum Compression { |
| COMPRESS_NONE = 0, |
| COMPRESS_EFIv1, /* The x86 BIOS only supports this */ |
| COMPRESS_LZMA1, /* The ARM BIOS supports LZMA1 */ |
| MAX_COMPRESS, |
| } Compression; |
| |
| __pragma(pack(pop)) /* Support packing for MSVC. */ |
| |
| #endif /* VBOOT_REFERENCE_BMPBLK_HEADER_H_ */ |
