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;
}
void write_fstab_root(char *root_path, FILE *file)
{
RootInfo *info = get_root_info_for_path(root_path);
if (info == NULL) {
LOGW("Unable to get root info for %s during fstab generation!", root_path);
return;
}
MtdPartition *mtd = get_root_mtd_partition(root_path);
if (mtd != NULL)
{
fprintf(file, "/dev/block/mtdblock%d ", mtd->device_index);
}
else
{
fprintf(file, "%s ", info->device);
}
fprintf(file, "%s ", info->mount_point);
fprintf(file, "%s %s\n", info->filesystem, info->filesystem_options == NULL ? "rw" : info->filesystem_options);
}
/* write_raw_image <src-image> <dest-root>
*/
static int
cmd_write_raw_image(const char *name, void *cookie,
int argc, const char *argv[])
{
UNUSED(cookie);
CHECK_WORDS();
if (argc != 2) {
LOGE("Command %s requires exactly two arguments\n", name);
return 1;
}
// Use 10% of the progress bar (20% post-verification) by default
const char *src_root_path = argv[0];
const char *dst_root_path = argv[1];
ui_print("Writing %s...\n", dst_root_path);
if (!gDidShowProgress) ui_show_progress(DEFAULT_IMAGE_PROGRESS_FRACTION, 0);
/* Find the source image, which is probably in a package.
*/
if (!is_package_root_path(src_root_path)) {
LOGE("Command %s: non-package source path \"%s\" not yet supported\n",
name, src_root_path);
return 255;
}
/* Get the package.
*/
char srcpathbuf[PATH_MAX];
const char *src_path;
const ZipArchive *package;
src_path = translate_package_root_path(src_root_path,
srcpathbuf, sizeof(srcpathbuf), &package);
if (src_path == NULL) {
LOGE("Command %s: bad source path \"%s\"\n", name, src_root_path);
return 1;
}
/* Get the entry.
*/
const ZipEntry *entry = mzFindZipEntry(package, src_path);
if (entry == NULL) {
LOGE("Missing file %s\n", src_path);
return 1;
}
/* Unmount the destination root if it isn't already.
*/
int ret = ensure_root_path_unmounted(dst_root_path);
if (ret < 0) {
LOGE("Can't unmount %s\n", dst_root_path);
return 1;
}
/* Open the partition for writing.
*/
const MtdPartition *partition = get_root_mtd_partition(dst_root_path);
if (partition == NULL) {
LOGE("Can't find %s\n", dst_root_path);
return 1;
}
MtdWriteContext *context = mtd_write_partition(partition);
if (context == NULL) {
LOGE("Can't open %s\n", dst_root_path);
return 1;
}
/* Extract and write the image.
*/
bool ok = mzProcessZipEntryContents(package, entry,
write_raw_image_process_fn, context);
if (!ok) {
LOGE("Error writing %s\n", dst_root_path);
mtd_write_close(context);
return 1;
}
if (mtd_erase_blocks(context, -1) == (off_t) -1) {
LOGE("Error finishing %s\n", dst_root_path);
mtd_write_close(context);
return -1;
}
if (mtd_write_close(context)) {
LOGE("Error closing %s\n", dst_root_path);
return -1;
}
return 0;
}
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;
off_t image_start_pos = 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;
}
off_t busy_start_pos = mtd_erase_blocks(write, 0);
header.image_offset = mtd_find_write_start(write, image_start_pos);
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_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;
}
off_t fail_start_pos = mtd_erase_blocks(write, 0);
header.busy_bitmap_offset = mtd_find_write_start(write, busy_start_pos);
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;
}
mtd_erase_blocks(write, 0);
header.fail_bitmap_offset = mtd_find_write_start(write, fail_start_pos);
/* 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) != image_start_pos) {
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;
}
int set_bootloader_message(const struct bootloader_message *in) {
// INFO("Enter set_bootloader_message\n");
if(in->command[0] != 0)
{
LOGI("command:\n%s\n", in->command);
LOGI("status:\n%s\n", in->status);
LOGI("recovery:\n%s\n", in->recovery);
}
else
LOGI("bootloader_message is empty\n");
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;
}
//cmy: 以sector为单位
ssize_t size = write_size * MISC_PAGES;
char data[size<<9];//cmy
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<<9) * MISC_COMMAND_PAGE], in, sizeof(*in));
#ifdef LOG_VERBOSE
printf("\n--- set_bootloader_message ---\n");
dump_data(data, size<<9);
printf("\n");
#endif
// INFO("\n--- set_bootloader_message ---\n");
// dump_data(data, size);
// INFO("\n");
// CMY:由于底层写数据时会自动执行擦除操作，因些我们可以直接写数据而不考虑擦除动作
#if 1
MtdWriteContext *write = mtd_write_partition(part);
if (write == NULL) {
LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
return -1;
}
LOGI("Write bootloader message\n");
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;
}
#endif
LOGI("Set boot command \"%s\"\n", in->command[0] != 255 ? in->command : "");
return 0;
}
