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author | Matt Mower <mowerm@gmail.com> | 2014-07-13 01:25:33 +0200 |
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committer | Gerrit Code Review <gerrit2@gerrit> | 2014-07-16 15:19:27 +0200 |
commit | 62ba6526b748dfe989e2245acbe635e0d10cbbef (patch) | |
tree | f6d0cd3659d4fb2fca50137137b21f425819f712 | |
parent | Implement "take a screenshot" feature (diff) | |
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-rw-r--r-- | twbootloader.cpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/twbootloader.cpp b/twbootloader.cpp deleted file mode 100644 index d0e49e0cd..000000000 --- a/twbootloader.cpp +++ /dev/null @@ -1,213 +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" -extern "C" { -#include "mtdutils/mtdutils.h" -} - -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <sys/stat.h> -#include <unistd.h> -#include "partitions.hpp" - -static int get_bootloader_message_mtd(struct bootloader_message *out, const TWPartition* Partition); -static int set_bootloader_message_mtd(const struct bootloader_message *in, const TWPartition* Partition); -static int get_bootloader_message_block(struct bootloader_message *out, const TWPartition* Partition); -static int set_bootloader_message_block(const struct bootloader_message *in, const TWPartition* Partition); - -int get_bootloader_message(struct bootloader_message *out) { - TWPartition* Part = PartitionManager.Find_Partition_By_Path("/misc"); - if (Part == NULL) { - //LOGE("Cannot load volume /misc!\n"); - return -1; - } - - if (Part->Current_File_System == "mtd") - return get_bootloader_message_mtd(out, Part); - else if (Part->Current_File_System == "emmc") - return get_bootloader_message_block(out, Part); - - LOGE("unknown misc partition fs_type \"%s\"\n", Part->Current_File_System.c_str()); - return -1; -} - -int set_bootloader_message(const struct bootloader_message *in) { - TWPartition* Part = PartitionManager.Find_Partition_By_Path("/misc"); - if (Part == NULL) { - //LOGE("Cannot load volume /misc!\n"); - return -1; - } - - if (Part->Current_File_System == "mtd") - return set_bootloader_message_mtd(in, Part); - else if (Part->Current_File_System == "emmc") - return set_bootloader_message_block(in, Part); - - LOGE("unknown misc partition fs_type \"%s\"\n", Part->Current_File_System.c_str()); - 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 TWPartition* Partition) { - size_t write_size; - mtd_scan_partitions(); - const MtdPartition *part = mtd_find_partition_by_name(Partition->MTD_Name.c_str()); - if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) { - LOGE("Can't find %s\n", Partition->MTD_Name.c_str()); - return -1; - } - - MtdReadContext *read = mtd_read_partition(part); - if (read == NULL) { - LOGE("Can't open %s\n(%s)\n", Partition->MTD_Name.c_str(), 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", Partition->MTD_Name.c_str(), 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 TWPartition* Partition) { - size_t write_size; - mtd_scan_partitions(); - const MtdPartition *part = mtd_find_partition_by_name(Partition->MTD_Name.c_str()); - if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) { - LOGE("Can't find %s\n", Partition->MTD_Name.c_str()); - return -1; - } - - MtdReadContext *read = mtd_read_partition(part); - if (read == NULL) { - LOGE("Can't open %s\n(%s)\n", Partition->MTD_Name.c_str(), 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", Partition->MTD_Name.c_str(), 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", Partition->MTD_Name.c_str(), strerror(errno)); - return -1; - } - if (mtd_write_data(write, data, size) != size) { - LOGE("Can't write %s\n(%s)\n", Partition->MTD_Name.c_str(), strerror(errno)); - mtd_write_close(write); - return -1; - } - if (mtd_write_close(write)) { - LOGE("Can't finish %s\n(%s)\n", Partition->MTD_Name.c_str(), 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 TWPartition* Partition) { - wait_for_device(Partition->Actual_Block_Device.c_str()); - - FILE* f = fopen(Partition->Actual_Block_Device.c_str(), "rb"); - if (f == NULL) { - LOGE("Can't open %s\n(%s)\n", Partition->Actual_Block_Device.c_str(), 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", Partition->Actual_Block_Device.c_str(), strerror(errno)); - return -1; - } - - if (fclose(f) != 0) { - LOGE("Failed closing %s\n(%s)\n", Partition->Actual_Block_Device.c_str(), strerror(errno)); - return -1; - } - - memcpy(out, &temp, sizeof(temp)); - return 0; -} - -static int set_bootloader_message_block(const struct bootloader_message *in, - const TWPartition* Partition) { - wait_for_device(Partition->Actual_Block_Device.c_str()); - - FILE* f = fopen(Partition->Actual_Block_Device.c_str(), "wb"); - if (f == NULL) { - LOGE("Can't open %s\n(%s)\n", Partition->Actual_Block_Device.c_str(), strerror(errno)); - return -1; - } - - int count = fwrite(in, sizeof(*in), 1, f); - if (count != 1) { - LOGE("Failed writing %s\n(%s)\n", Partition->Actual_Block_Device.c_str(), strerror(errno)); - return -1; - } - - if (fclose(f) != 0) { - LOGE("Failed closing %s\n(%s)\n", Partition->Actual_Block_Device.c_str(), strerror(errno)); - return -1; - } - return 0; -} |