From 10e418d3c89ec404fbf959c1ef77a720a42a66ed Mon Sep 17 00:00:00 2001 From: Doug Zongker Date: Fri, 28 Oct 2011 10:33:05 -0700 Subject: turn recovery into a C++ binary Change-Id: I68a67a4c8edec9a74463b3d4766005ce27b51316 --- bootloader.c | 202 ----------------------------------------------------------- 1 file changed, 202 deletions(-) delete mode 100644 bootloader.c (limited to 'bootloader.c') diff --git a/bootloader.c b/bootloader.c deleted file mode 100644 index baaddc55f..000000000 --- a/bootloader.c +++ /dev/null @@ -1,202 +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 -#include -#include - -static int get_bootloader_message_mtd(struct bootloader_message *out, const Volume* v); -static int set_bootloader_message_mtd(const struct bootloader_message *in, const Volume* v); -static int get_bootloader_message_block(struct bootloader_message *out, const Volume* v); -static int set_bootloader_message_block(const struct bootloader_message *in, const Volume* v); - -int get_bootloader_message(struct bootloader_message *out) { - Volume* v = volume_for_path("/misc"); - if (v == NULL) { - LOGE("Cannot load volume /misc!\n"); - return -1; - } - if (strcmp(v->fs_type, "mtd") == 0) { - return get_bootloader_message_mtd(out, v); - } else if (strcmp(v->fs_type, "emmc") == 0) { - return get_bootloader_message_block(out, v); - } - LOGE("unknown misc partition fs_type \"%s\"\n", v->fs_type); - return -1; -} - -int set_bootloader_message(const struct bootloader_message *in) { - Volume* v = volume_for_path("/misc"); - if (v == NULL) { - LOGE("Cannot load volume /misc!\n"); - return -1; - } - if (strcmp(v->fs_type, "mtd") == 0) { - return set_bootloader_message_mtd(in, v); - } else if (strcmp(v->fs_type, "emmc") == 0) { - return set_bootloader_message_block(in, v); - } - LOGE("unknown misc partition fs_type \"%s\"\n", v->fs_type); - return -1; -} - -// ------------------------------ -// for misc partitions on MTD -// ------------------------------ - -static const int MISC_PAGES = 3; // number of pages to save -static const int MISC_COMMAND_PAGE = 1; // bootloader command is this page - -static int get_bootloader_message_mtd(struct bootloader_message *out, - const Volume* v) { - size_t write_size; - mtd_scan_partitions(); - const MtdPartition *part = mtd_find_partition_by_name(v->device); - if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) { - LOGE("Can't find %s\n", v->device); - return -1; - } - - MtdReadContext *read = mtd_read_partition(part); - if (read == NULL) { - LOGE("Can't open %s\n(%s)\n", v->device, 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", v->device, strerror(errno)); - mtd_read_close(read); - if (r != size) return -1; - - memcpy(out, &data[write_size * MISC_COMMAND_PAGE], sizeof(*out)); - return 0; -} -static int set_bootloader_message_mtd(const struct bootloader_message *in, - const Volume* v) { - size_t write_size; - mtd_scan_partitions(); - const MtdPartition *part = mtd_find_partition_by_name(v->device); - if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) { - LOGE("Can't find %s\n", v->device); - return -1; - } - - MtdReadContext *read = mtd_read_partition(part); - if (read == NULL) { - LOGE("Can't open %s\n(%s)\n", v->device, 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", v->device, strerror(errno)); - mtd_read_close(read); - if (r != size) return -1; - - memcpy(&data[write_size * MISC_COMMAND_PAGE], in, sizeof(*in)); - - MtdWriteContext *write = mtd_write_partition(part); - if (write == NULL) { - LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - if (mtd_write_data(write, data, size) != size) { - LOGE("Can't write %s\n(%s)\n", v->device, strerror(errno)); - mtd_write_close(write); - return -1; - } - if (mtd_write_close(write)) { - LOGE("Can't finish %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - - LOGI("Set boot command \"%s\"\n", in->command[0] != 255 ? in->command : ""); - return 0; -} - - -// ------------------------------------ -// for misc partitions on block devices -// ------------------------------------ - -static void wait_for_device(const char* fn) { - int tries = 0; - int ret; - struct stat buf; - do { - ++tries; - ret = stat(fn, &buf); - if (ret) { - printf("stat %s try %d: %s\n", fn, tries, strerror(errno)); - sleep(1); - } - } while (ret && tries < 10); - if (ret) { - printf("failed to stat %s\n", fn); - } -} - -static int get_bootloader_message_block(struct bootloader_message *out, - const Volume* v) { - wait_for_device(v->device); - FILE* f = fopen(v->device, "rb"); - if (f == NULL) { - LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - struct bootloader_message temp; - int count = fread(&temp, sizeof(temp), 1, f); - if (count != 1) { - LOGE("Failed reading %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - if (fclose(f) != 0) { - LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - memcpy(out, &temp, sizeof(temp)); - return 0; -} - -static int set_bootloader_message_block(const struct bootloader_message *in, - const Volume* v) { - wait_for_device(v->device); - FILE* f = fopen(v->device, "wb"); - if (f == NULL) { - LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - int count = fwrite(in, sizeof(*in), 1, f); - if (count != 1) { - LOGE("Failed writing %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - if (fclose(f) != 0) { - LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno)); - return -1; - } - return 0; -} -- cgit v1.2.3