From ffb48f64fec674c6dd923eb8b1eb3f743e05a8ba Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:14 -0800 Subject: auto import from //depot/cupcake/@135843 --- bootloader.c | 267 ----------------------------------------------------------- 1 file changed, 267 deletions(-) delete mode 100644 bootloader.c (limited to 'bootloader.c') 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 -#include -#include - -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; -} -- cgit v1.2.3