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-rw-r--r--bootloader.cpp345
1 files changed, 0 insertions, 345 deletions
diff --git a/bootloader.cpp b/bootloader.cpp
deleted file mode 100644
index 90b8998b0..000000000
--- a/bootloader.cpp
+++ /dev/null
@@ -1,345 +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.
- */
-
-extern "C" {
-#include "mtdutils/mtdutils.h"
-}
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "bootloader.h"
-#include "common.h"
-#include "mtdutils/mtdutils.h"
-//#include "roots.h"
-//#include "unique_fd.h"
-
-// fake Volume struct that allows us to use the AOSP code easily
-struct Volume
-{
- char fs_type[8];
- char blk_device[256];
-};
-
-static Volume misc;
-
-void set_misc_device(const char* type, const char* name) {
- strlcpy(misc.fs_type, type, sizeof(misc.fs_type));
- if (strlen(name) >= sizeof(misc.blk_device)) {
- LOGE("New device name of '%s' is too large for bootloader.cpp\n", name);
- } else {
- strcpy(misc.blk_device, name);
- }
-}
-
-static int get_bootloader_message_mtd(bootloader_message* out, const Volume* v);
-static int set_bootloader_message_mtd(const bootloader_message* in, const Volume* v);
-static int get_bootloader_message_block(bootloader_message* out, const Volume* v);
-static int set_bootloader_message_block(const bootloader_message* in, const Volume* v);
-
-int get_bootloader_message(bootloader_message* out) {
-#if 0
- Volume* v = volume_for_path("/misc");
- if (v == nullptr) {
- LOGE("Cannot load volume /misc!\n");
- return -1;
- }
-#else
- Volume* v = &misc;
- if (v->fs_type[0] == 0) {
- LOGI("Not using /misc, not defined in fstab.\n");
- return -1;
- }
-#endif
- 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 bootloader_message* in) {
-#if 0
- Volume* v = volume_for_path("/misc");
- if (v == nullptr) {
- LOGE("Cannot load volume /misc!\n");
- return -1;
- }
-#else
- Volume* v = &misc;
- if (v->fs_type[0] == 0) {
- LOGI("Not using /misc, not defined in fstab.\n");
- return -1;
- }
-#endif
- 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(bootloader_message* out,
- const Volume* v) {
- size_t write_size;
- mtd_scan_partitions();
- const MtdPartition* part = mtd_find_partition_by_name(v->blk_device);
- if (part == nullptr || mtd_partition_info(part, nullptr, nullptr, &write_size)) {
- LOGE("failed to find \"%s\"\n", v->blk_device);
- return -1;
- }
-
- MtdReadContext* read = mtd_read_partition(part);
- if (read == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_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("failed to read \"%s\": %s\n", v->blk_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 bootloader_message* in,
- const Volume* v) {
- size_t write_size;
- mtd_scan_partitions();
- const MtdPartition* part = mtd_find_partition_by_name(v->blk_device);
- if (part == nullptr || mtd_partition_info(part, nullptr, nullptr, &write_size)) {
- LOGE("failed to find \"%s\"\n", v->blk_device);
- return -1;
- }
-
- MtdReadContext* read = mtd_read_partition(part);
- if (read == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_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("failed to read \"%s\": %s\n", v->blk_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 == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
- if (mtd_write_data(write, data, size) != size) {
- LOGE("failed to write \"%s\": %s\n", v->blk_device, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
- if (mtd_write_close(write)) {
- LOGE("failed to finish \"%s\": %s\n", v->blk_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;
- do {
- ++tries;
- struct stat buf;
- ret = stat(fn, &buf);
- if (ret == -1) {
- printf("failed to 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(bootloader_message* out,
- const Volume* v) {
- wait_for_device(v->blk_device);
- FILE* f = fopen(v->blk_device, "rb");
- if (f == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
-#ifdef BOARD_RECOVERY_BLDRMSG_OFFSET
- fseek(f, BOARD_RECOVERY_BLDRMSG_OFFSET, SEEK_SET);
-#endif
- bootloader_message temp;
-
- int count = fread(&temp, sizeof(temp), 1, f);
- if (count != 1) {
- LOGE("failed to read \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
- if (fclose(f) != 0) {
- LOGE("failed to close \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
- memcpy(out, &temp, sizeof(temp));
- return 0;
-}
-
-static int set_bootloader_message_block(const bootloader_message* in,
- const Volume* v) {
- wait_for_device(v->blk_device);
- int fd = open(v->blk_device, O_WRONLY | O_SYNC);
- if (fd == -1) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
-
-#ifdef BOARD_RECOVERY_BLDRMSG_OFFSET
- lseek(fd, BOARD_RECOVERY_BLDRMSG_OFFSET, SEEK_SET);
-#endif
-
- size_t written = 0;
- const uint8_t* start = reinterpret_cast<const uint8_t*>(in);
- size_t total = sizeof(*in);
- while (written < total) {
- ssize_t wrote = TEMP_FAILURE_RETRY(write(fd, start + written, total - written));
- if (wrote == -1) {
- LOGE("failed to write some bytes: %s\n",
- strerror(errno));
- close(fd);
- return -1;
- }
- written += wrote;
- }
-
- if (fsync(fd) == -1) {
- LOGE("failed to fsync \"%s\": %s\n", v->blk_device, strerror(errno));
- close(fd);
- return -1;
- }
- close(fd);
- return 0;
-}
-
-
-static const char *COMMAND_FILE = "/cache/recovery/command";
-static const int MAX_ARG_LENGTH = 4096;
-static const int MAX_ARGS = 100;
-
-// command line args come from, in decreasing precedence:
-// - the actual command line
-// - the bootloader control block (one per line, after "recovery")
-// - the contents of COMMAND_FILE (one per line)
-void
-get_args(int *argc, char ***argv) {
- struct bootloader_message boot;
- memset(&boot, 0, sizeof(boot));
- get_bootloader_message(&boot); // this may fail, leaving a zeroed structure
-
- if (boot.command[0] != 0 && boot.command[0] != 255) {
- LOGI("Boot command: %.*s\n", (int)sizeof(boot.command), boot.command);
- }
-
- if (boot.status[0] != 0 && boot.status[0] != 255) {
- LOGI("Boot status: %.*s\n", (int)sizeof(boot.status), boot.status);
- }
-
- // --- if arguments weren't supplied, look in the bootloader control block
- if (*argc <= 1) {
- boot.recovery[sizeof(boot.recovery) - 1] = '\0'; // Ensure termination
- const char *arg = strtok(boot.recovery, "\n");
- if (arg != NULL && !strcmp(arg, "recovery")) {
- *argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
- (*argv)[0] = strdup(arg);
- for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
- if ((arg = strtok(NULL, "\n")) == NULL) break;
- (*argv)[*argc] = strdup(arg);
- }
- LOGI("Got arguments from boot message\n");
- } else if (boot.recovery[0] != 0 && boot.recovery[0] != 255) {
- LOGE("Bad boot message\n\"%.20s\"\n", boot.recovery);
- }
- }
-
- // --- if that doesn't work, try the command file
- if (*argc <= 1) {
- FILE *fp = fopen(COMMAND_FILE, "r");
- if (fp != NULL) {
- char *token;
- char *argv0 = (*argv)[0];
- *argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
- (*argv)[0] = argv0; // use the same program name
-
- char buf[MAX_ARG_LENGTH];
- for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
- if (!fgets(buf, sizeof(buf), fp)) break;
- token = strtok(buf, "\r\n");
- if (token != NULL) {
- (*argv)[*argc] = strdup(token); // Strip newline.
- } else {
- --*argc;
- }
- }
-
- fflush(fp);
- if (ferror(fp)) LOGE("Error in %s\n(%s)\n", COMMAND_FILE, strerror(errno));
- fclose(fp);
- LOGI("Got arguments from %s\n", COMMAND_FILE);
- }
- }
-
- // --> write the arguments we have back into the bootloader control block
- // always boot into recovery after this (until finish_recovery() is called)
- strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
- strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
- int i;
- for (i = 1; i < *argc; ++i) {
- strlcat(boot.recovery, (*argv)[i], sizeof(boot.recovery));
- strlcat(boot.recovery, "\n", sizeof(boot.recovery));
- }
- set_bootloader_message(&boot);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 22:22:36 +0100