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authorThe Android Open Source Project2008-10-21 09:00:00 -0500
committerThe Android Open Source Project2008-10-21 09:00:00 -0500
commit23580ca27a0a8109312fdd36cc363ad1f4719889 (patch)
tree0bb90eaa72f8df110162499f756b5cbfb7d49235 /bootloader.h
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Initial Contribution
Diffstat (limited to 'bootloader.h')
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1 files changed, 59 insertions, 0 deletions
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1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _RECOVERY_BOOTLOADER_H
18#define _RECOVERY_BOOTLOADER_H
19
20/* Bootloader Message
21 *
22 * This structure describes the content of a block in flash
23 * that is used for recovery and the bootloader to talk to
24 * each other.
25 *
26 * The command field is updated by linux when it wants to
27 * reboot into recovery or to update radio or bootloader firmware.
28 * It is also updated by the bootloader when firmware update
29 * is complete (to boot into recovery for any final cleanup)
30 *
31 * The status field is written by the bootloader after the
32 * completion of an "update-radio" or "update-hboot" command.
33 *
34 * The recovery field is only written by linux and used
35 * for the system to send a message to recovery or the
36 * other way around.
37 */
38struct bootloader_message {
39 char command[32];
40 char status[32];
41 char recovery[1024];
42};
43
44/* Read and write the bootloader command from the "misc" partition.
45 * These return zero on success.
46 */
47int get_bootloader_message(struct bootloader_message *out);
48int set_bootloader_message(const struct bootloader_message *in);
49
50/* Write an update to the cache partition for update-radio or update-hboot.
51 * Note, this destroys any filesystem on the cache partition!
52 * The expected bitmap format is 240x320, 16bpp (2Bpp), RGB 5:6:5.
53 */
54int write_update_for_bootloader(
55 const char *update, int update_len,
56 int bitmap_width, int bitmap_height, int bitmap_bpp,
57 const char *busy_bitmap, const char *error_bitmap);
58
59#endif