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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-04 03:28:14 +0100
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-04 03:28:14 +0100
commitffb48f64fec674c6dd923eb8b1eb3f743e05a8ba (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /bootloader.c
parentauto import from //depot/cupcake/@132589 (diff)
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Diffstat (limited to '')
-rw-r--r--bootloader.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/bootloader.c b/bootloader.c
deleted file mode 100644
index de441e1df..000000000
--- a/bootloader.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "bootloader.h"
-#include "common.h"
-#include "mtdutils/mtdutils.h"
-#include "roots.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
-static const char *CACHE_NAME = "CACHE:";
-static const char *MISC_NAME = "MISC:";
-static const int MISC_PAGES = 3; // number of pages to save
-static const int MISC_COMMAND_PAGE = 1; // bootloader command is this page
-
-#ifdef LOG_VERBOSE
-static void dump_data(const char *data, int len) {
- int pos;
- for (pos = 0; pos < len; ) {
- printf("%05x: %02x", pos, data[pos]);
- for (++pos; pos < len && (pos % 24) != 0; ++pos) {
- printf(" %02x", data[pos]);
- }
- printf("\n");
- }
-}
-#endif
-
-int get_bootloader_message(struct bootloader_message *out) {
- size_t write_size;
- const MtdPartition *part = get_root_mtd_partition(MISC_NAME);
- if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", MISC_NAME);
- return -1;
- }
-
- MtdReadContext *read = mtd_read_partition(part);
- if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
- return -1;
- }
-
- const ssize_t size = write_size * MISC_PAGES;
- char data[size];
- ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", MISC_NAME, strerror(errno));
- mtd_read_close(read);
- if (r != size) return -1;
-
-#ifdef LOG_VERBOSE
- printf("\n--- get_bootloader_message ---\n");
- dump_data(data, size);
- printf("\n");
-#endif
-
- memcpy(out, &data[write_size * MISC_COMMAND_PAGE], sizeof(*out));
- return 0;
-}
-
-int set_bootloader_message(const struct bootloader_message *in) {
- size_t write_size;
- const MtdPartition *part = get_root_mtd_partition(MISC_NAME);
- if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", MISC_NAME);
- return -1;
- }
-
- MtdReadContext *read = mtd_read_partition(part);
- if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
- return -1;
- }
-
- ssize_t size = write_size * MISC_PAGES;
- char data[size];
- ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", MISC_NAME, strerror(errno));
- mtd_read_close(read);
- if (r != size) return -1;
-
- memcpy(&data[write_size * MISC_COMMAND_PAGE], in, sizeof(*in));
-
-#ifdef LOG_VERBOSE
- printf("\n--- set_bootloader_message ---\n");
- dump_data(data, size);
- printf("\n");
-#endif
-
- MtdWriteContext *write = mtd_write_partition(part);
- if (write == NULL) {
- LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
- return -1;
- }
- if (mtd_write_data(write, data, size) != size) {
- LOGE("Can't write %s\n(%s)\n", MISC_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
- if (mtd_write_close(write)) {
- LOGE("Can't finish %s\n(%s)\n", MISC_NAME, strerror(errno));
- return -1;
- }
-
- LOGI("Set boot command \"%s\"\n", in->command[0] != 255 ? in->command : "");
- return 0;
-}
-
-/* Update Image
- *
- * - will be stored in the "cache" partition
- * - bad blocks will be ignored, like boot.img and recovery.img
- * - the first block will be the image header (described below)
- * - the size is in BYTES, inclusive of the header
- * - offsets are in BYTES from the start of the update header
- * - two raw bitmaps will be included, the "busy" and "fail" bitmaps
- * - for dream, the bitmaps will be 320x480x16bpp RGB565
- */
-
-#define UPDATE_MAGIC "MSM-RADIO-UPDATE"
-#define UPDATE_MAGIC_SIZE 16
-#define UPDATE_VERSION 0x00010000
-
-struct update_header {
- unsigned char MAGIC[UPDATE_MAGIC_SIZE];
-
- unsigned version;
- unsigned size;
-
- unsigned image_offset;
- unsigned image_length;
-
- unsigned bitmap_width;
- unsigned bitmap_height;
- unsigned bitmap_bpp;
-
- unsigned busy_bitmap_offset;
- unsigned busy_bitmap_length;
-
- unsigned fail_bitmap_offset;
- unsigned fail_bitmap_length;
-};
-
-int write_update_for_bootloader(
- const char *update, int update_length,
- int bitmap_width, int bitmap_height, int bitmap_bpp,
- const char *busy_bitmap, const char *fail_bitmap) {
- if (ensure_root_path_unmounted(CACHE_NAME)) {
- LOGE("Can't unmount %s\n", CACHE_NAME);
- return -1;
- }
-
- const MtdPartition *part = get_root_mtd_partition(CACHE_NAME);
- if (part == NULL) {
- LOGE("Can't find %s\n", CACHE_NAME);
- return -1;
- }
-
- MtdWriteContext *write = mtd_write_partition(part);
- if (write == NULL) {
- LOGE("Can't open %s\n(%s)\n", CACHE_NAME, strerror(errno));
- return -1;
- }
-
- /* Write an invalid (zero) header first, to disable any previous
- * update and any other structured contents (like a filesystem),
- * and as a placeholder for the amount of space required.
- */
-
- struct update_header header;
- memset(&header, 0, sizeof(header));
- const ssize_t header_size = sizeof(header);
- if (mtd_write_data(write, (char*) &header, header_size) != header_size) {
- LOGE("Can't write header to %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- /* Write each section individually block-aligned, so we can write
- * each block independently without complicated buffering.
- */
-
- memcpy(&header.MAGIC, UPDATE_MAGIC, UPDATE_MAGIC_SIZE);
- header.version = UPDATE_VERSION;
- header.size = header_size;
-
- header.image_offset = mtd_erase_blocks(write, 0);
- header.image_length = update_length;
- if ((int) header.image_offset == -1 ||
- mtd_write_data(write, update, update_length) != update_length) {
- LOGE("Can't write update to %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- header.bitmap_width = bitmap_width;
- header.bitmap_height = bitmap_height;
- header.bitmap_bpp = bitmap_bpp;
-
- int bitmap_length = (bitmap_bpp + 7) / 8 * bitmap_width * bitmap_height;
-
- header.busy_bitmap_offset = mtd_erase_blocks(write, 0);
- header.busy_bitmap_length = busy_bitmap != NULL ? bitmap_length : 0;
- if ((int) header.busy_bitmap_offset == -1 ||
- mtd_write_data(write, busy_bitmap, bitmap_length) != bitmap_length) {
- LOGE("Can't write bitmap to %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- header.fail_bitmap_offset = mtd_erase_blocks(write, 0);
- header.fail_bitmap_length = fail_bitmap != NULL ? bitmap_length : 0;
- if ((int) header.fail_bitmap_offset == -1 ||
- mtd_write_data(write, fail_bitmap, bitmap_length) != bitmap_length) {
- LOGE("Can't write bitmap to %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- /* Write the header last, after all the blocks it refers to, so that
- * when the magic number is installed everything is valid.
- */
-
- if (mtd_write_close(write)) {
- LOGE("Can't finish writing %s\n(%s)\n", CACHE_NAME, strerror(errno));
- return -1;
- }
-
- write = mtd_write_partition(part);
- if (write == NULL) {
- LOGE("Can't reopen %s\n(%s)\n", CACHE_NAME, strerror(errno));
- return -1;
- }
-
- if (mtd_write_data(write, (char*) &header, header_size) != header_size) {
- LOGE("Can't rewrite header to %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- if (mtd_erase_blocks(write, 0) != (off_t) header.image_offset) {
- LOGE("Misalignment rewriting %s\n(%s)\n", CACHE_NAME, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
-
- if (mtd_write_close(write)) {
- LOGE("Can't finish header of %s\n(%s)\n", CACHE_NAME, strerror(errno));
- return -1;
- }
-
- return 0;
-}