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141 lines
5.2 KiB
141 lines
5.2 KiB
4 months ago
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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Data structure definitions for firmware screen block (BMPBLOCK).
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*
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* The BmpBlock structure looks like:
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* +-----------------------------------------+
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* | BmpBlock Header |
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* +-----------------------------------------+
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* | ScreenLayout[0] | \
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* +-----------------------------------------+ |
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* | ScreenLayout[1] | |
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* +-----------------------------------------+ Localization[0]
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* | ... | |
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* +-----------------------------------------+ |
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* | ScreenLayout[number_of_screenlayouts-1] | /
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* +-----------------------------------------+
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* | ScreenLayout[0] | \
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* +-----------------------------------------+ Localization[1]
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* | ... | /
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* +-----------------------------------------+ ...
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* | ScreenLayout[0] | \
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* +-----------------------------------------+ Localization[
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* | ... | / number_of_localizations-1]
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* +-----------------------------------------+
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* | ImageInfo[0] |
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* +-----------------------------------------+
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* | Image Content |
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* +-----------------------------------------+
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* | ImageInfo[2] | ImageInfo is 4-byte aligned.
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* +-----------------------------------------+
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* | Image Content |
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* +-----------------------------------------+
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* | ... |
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* +-----------------------------------------+
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* | ImageInfo[number_fo_images-1] |
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* +-----------------------------------------+
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* | Image Content |
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* +-----------------------------------------+
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* | List of locale names |
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* +-----------------------------------------+
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*/
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#ifndef VBOOT_REFERENCE_BMPBLK_HEADER_H_
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#define VBOOT_REFERENCE_BMPBLK_HEADER_H_
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#include <stdint.h>
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#define BMPBLOCK_SIGNATURE "$BMP"
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#define BMPBLOCK_SIGNATURE_SIZE (4)
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#define BMPBLOCK_MAJOR_VERSION (0x0002)
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#define BMPBLOCK_MINOR_VERSION (0x0000)
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#define MAX_IMAGE_IN_LAYOUT (16)
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/* BMPBLOCK header, describing how many screen layouts and image infos */
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typedef struct BmpBlockHeader {
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/* BMPBLOCK_SIGNATURE $BMP */
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uint8_t signature[BMPBLOCK_SIGNATURE_SIZE];
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uint16_t major_version; /* see BMPBLOCK_MAJOR_VER */
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uint16_t minor_version; /* see BMPBLOCK_MINOR_VER */
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uint32_t number_of_localizations; /* Number of localizations */
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/* Number of screen layouts in each localization */
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uint32_t number_of_screenlayouts;
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uint32_t number_of_imageinfos; /* Number of image infos */
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/* Offset of locale-translation string */
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uint32_t locale_string_offset;
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uint32_t reserved[2];
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} __attribute__((packed)) BmpBlockHeader;
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/* Screen layout, describing how to stack multiple images on screen */
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typedef struct ScreenLayout {
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/*
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* Images contained in the screen. Will be rendered from 0 to
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* (number_of_images-1).
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*/
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struct {
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/* (X,Y) offset of image to be rendered */
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uint32_t x;
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uint32_t y;
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/* Offset of image info from start of BMPBLOCK; 0=end it. */
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uint32_t image_info_offset;
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} images[MAX_IMAGE_IN_LAYOUT];
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} __attribute__((packed)) ScreenLayout;
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/* Constants for screen index */
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typedef enum ScreenIndex {
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SCREEN_DEVELOPER_WARNING = 0,
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SCREEN_RECOVERY_REMOVE,
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SCREEN_RECOVERY_NO_GOOD,
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SCREEN_RECOVERY_INSERT,
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SCREEN_RECOVERY_TO_DEV,
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SCREEN_DEVELOPER_TO_NORM,
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SCREEN_WAIT,
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SCREEN_TO_NORM_CONFIRMED,
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MAX_VALID_SCREEN_INDEX,
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SCREEN_BLANK = ~0UL,
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} ScreenIndex;
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/* Image info, describing the information of the image block */
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typedef struct ImageInfo {
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uint32_t tag; /* Tag it as a special image, like HWID */
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uint32_t width; /* Width of the image */
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uint32_t height; /* Height of the image */
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uint32_t format; /* File format of the image */
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uint32_t compression; /* Compression method for the image file */
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uint32_t original_size; /* Size of the original uncompressed image */
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/*
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* Size of the compressed image; if image is not compressed, this will
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* be the same as the original size.
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*/
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uint32_t compressed_size;
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uint32_t reserved;
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/* NOTE: The actual image content (if any) follows immediately. */
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} __attribute__((packed)) ImageInfo;
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/* Constants for ImageInfo.tag */
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typedef enum ImageTag {
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TAG_NONE = 0,
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TAG_HWID,
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TAG_HWID_RTOL, /* "right-to-left", ie, right-justified HWID */
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} ImageTag;
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/* Constants for ImageInfo.format */
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typedef enum ImageFormat {
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FORMAT_INVALID = 0,
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FORMAT_BMP,
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FORMAT_FONT,
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} ImageFormat;
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/*
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* These magic image names can be used in the .yaml file to indicate that the
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* ASCII HWID should be displayed. For RENDER_HWID, the image coordinates
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* specify upper-left corner of the HWID string. For RENDER_HWID_RTOL, they
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* indicate the upper-right corner (handy for right-to-left languages).
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*/
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#define RENDER_HWID "$HWID"
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#define RENDER_HWID_RTOL "$HWID.rtol"
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#endif /* VBOOT_REFERENCE_BMPBLK_HEADER_H_ */
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