* SPDX-License-Identifier: GPL-2.0+
*/
+#include <config.h>
#include <common.h>
+#include <blk.h>
+#include <fastboot.h>
#include <fb_mmc.h>
+#include <image-sparse.h>
#include <part.h>
-#include <aboot.h>
-#include <sparse_format.h>
+#include <mmc.h>
+#include <div64.h>
+#include <linux/compat.h>
+#include <android_image.h>
-/* The 64 defined bytes plus the '\0' */
-#define RESPONSE_LEN (64 + 1)
+/*
+ * FIXME: Ensure we always set these names via Kconfig once xxx_PARTITION is
+ * migrated
+ */
+#ifndef CONFIG_FASTBOOT_GPT_NAME
+#define CONFIG_FASTBOOT_GPT_NAME "gpt"
+#endif
+
+
+#ifndef CONFIG_FASTBOOT_MBR_NAME
+#define CONFIG_FASTBOOT_MBR_NAME "mbr"
+#endif
+
+#define BOOT_PARTITION_NAME "boot"
+
+struct fb_mmc_sparse {
+ struct blk_desc *dev_desc;
+};
-static char *response_str;
+static int part_get_info_by_name_or_alias(struct blk_desc *dev_desc,
+ const char *name, disk_partition_t *info)
+{
+ int ret;
+
+ ret = part_get_info_by_name(dev_desc, name, info);
+ if (ret < 0) {
+ /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
+ char env_alias_name[25 + 32 + 1];
+ char *aliased_part_name;
+
+ /* check for alias */
+ strcpy(env_alias_name, "fastboot_partition_alias_");
+ strncat(env_alias_name, name, 32);
+ aliased_part_name = env_get(env_alias_name);
+ if (aliased_part_name != NULL)
+ ret = part_get_info_by_name(dev_desc,
+ aliased_part_name, info);
+ }
+ return ret;
+}
-void fastboot_fail(const char *s)
+static lbaint_t fb_mmc_sparse_write(struct sparse_storage *info,
+ lbaint_t blk, lbaint_t blkcnt, const void *buffer)
{
- strncpy(response_str, "FAIL", 4);
- strncat(response_str, s, RESPONSE_LEN - 4 - 1);
+ struct fb_mmc_sparse *sparse = info->priv;
+ struct blk_desc *dev_desc = sparse->dev_desc;
+
+ return blk_dwrite(dev_desc, blk, blkcnt, buffer);
}
-void fastboot_okay(const char *s)
+static lbaint_t fb_mmc_sparse_reserve(struct sparse_storage *info,
+ lbaint_t blk, lbaint_t blkcnt)
{
- strncpy(response_str, "OKAY", 4);
- strncat(response_str, s, RESPONSE_LEN - 4 - 1);
+ return blkcnt;
}
-static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info,
+static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info,
const char *part_name, void *buffer,
unsigned int download_bytes)
{
/* determine number of blocks to write */
blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
- blkcnt = blkcnt / info->blksz;
+ blkcnt = lldiv(blkcnt, info->blksz);
if (blkcnt > info->size) {
- error("too large for partition: '%s'\n", part_name);
+ pr_err("too large for partition: '%s'\n", part_name);
fastboot_fail("too large for partition");
return;
}
puts("Flashing Raw Image\n");
- blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt,
- buffer);
+ blks = blk_dwrite(dev_desc, info->start, blkcnt, buffer);
if (blks != blkcnt) {
- error("failed writing to device %d\n", dev_desc->dev);
+ pr_err("failed writing to device %d\n", dev_desc->devnum);
fastboot_fail("failed writing to device");
return;
}
fastboot_okay("");
}
-void fb_mmc_flash_write(const char *cmd, void *download_buffer,
- unsigned int download_bytes, char *response)
+#ifdef CONFIG_ANDROID_BOOT_IMAGE
+/**
+ * Read Android boot image header from boot partition.
+ *
+ * @param[in] dev_desc MMC device descriptor
+ * @param[in] info Boot partition info
+ * @param[out] hdr Where to store read boot image header
+ *
+ * @return Boot image header sectors count or 0 on error
+ */
+static lbaint_t fb_mmc_get_boot_header(struct blk_desc *dev_desc,
+ disk_partition_t *info,
+ struct andr_img_hdr *hdr)
{
- int ret;
- block_dev_desc_t *dev_desc;
+ ulong sector_size; /* boot partition sector size */
+ lbaint_t hdr_sectors; /* boot image header sectors count */
+ int res;
+
+ /* Calculate boot image sectors count */
+ sector_size = info->blksz;
+ hdr_sectors = DIV_ROUND_UP(sizeof(struct andr_img_hdr), sector_size);
+ if (hdr_sectors == 0) {
+ pr_err("invalid number of boot sectors: 0");
+ fastboot_fail("invalid number of boot sectors: 0");
+ return 0;
+ }
+
+ /* Read the boot image header */
+ res = blk_dread(dev_desc, info->start, hdr_sectors, (void *)hdr);
+ if (res != hdr_sectors) {
+ pr_err("cannot read header from boot partition");
+ fastboot_fail("cannot read header from boot partition");
+ return 0;
+ }
+
+ /* Check boot header magic string */
+ res = android_image_check_header(hdr);
+ if (res != 0) {
+ pr_err("bad boot image magic");
+ fastboot_fail("boot partition not initialized");
+ return 0;
+ }
+
+ return hdr_sectors;
+}
+
+/**
+ * Write downloaded zImage to boot partition and repack it properly.
+ *
+ * @param dev_desc MMC device descriptor
+ * @param download_buffer Address to fastboot buffer with zImage in it
+ * @param download_bytes Size of fastboot buffer, in bytes
+ *
+ * @return 0 on success or -1 on error
+ */
+static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
+ void *download_buffer,
+ unsigned int download_bytes)
+{
+ uintptr_t hdr_addr; /* boot image header address */
+ struct andr_img_hdr *hdr; /* boot image header */
+ lbaint_t hdr_sectors; /* boot image header sectors */
+ u8 *ramdisk_buffer;
+ u32 ramdisk_sector_start;
+ u32 ramdisk_sectors;
+ u32 kernel_sector_start;
+ u32 kernel_sectors;
+ u32 sectors_per_page;
disk_partition_t info;
+ int res;
+
+ puts("Flashing zImage\n");
+
+ /* Get boot partition info */
+ res = part_get_info_by_name(dev_desc, BOOT_PARTITION_NAME, &info);
+ if (res < 0) {
+ pr_err("cannot find boot partition");
+ fastboot_fail("cannot find boot partition");
+ return -1;
+ }
+
+ /* Put boot image header in fastboot buffer after downloaded zImage */
+ hdr_addr = (uintptr_t)download_buffer + ALIGN(download_bytes, PAGE_SIZE);
+ hdr = (struct andr_img_hdr *)hdr_addr;
+
+ /* Read boot image header */
+ hdr_sectors = fb_mmc_get_boot_header(dev_desc, &info, hdr);
+ if (hdr_sectors == 0) {
+ pr_err("unable to read boot image header");
+ fastboot_fail("unable to read boot image header");
+ return -1;
+ }
+
+ /* Check if boot image has second stage in it (we don't support it) */
+ if (hdr->second_size > 0) {
+ pr_err("moving second stage is not supported yet");
+ fastboot_fail("moving second stage is not supported yet");
+ return -1;
+ }
+
+ /* Extract ramdisk location */
+ sectors_per_page = hdr->page_size / info.blksz;
+ ramdisk_sector_start = info.start + sectors_per_page;
+ ramdisk_sector_start += DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) *
+ sectors_per_page;
+ ramdisk_sectors = DIV_ROUND_UP(hdr->ramdisk_size, hdr->page_size) *
+ sectors_per_page;
+
+ /* Read ramdisk and put it in fastboot buffer after boot image header */
+ ramdisk_buffer = (u8 *)hdr + (hdr_sectors * info.blksz);
+ res = blk_dread(dev_desc, ramdisk_sector_start, ramdisk_sectors,
+ ramdisk_buffer);
+ if (res != ramdisk_sectors) {
+ pr_err("cannot read ramdisk from boot partition");
+ fastboot_fail("cannot read ramdisk from boot partition");
+ return -1;
+ }
- /* initialize the response buffer */
- response_str = response;
+ /* Write new kernel size to boot image header */
+ hdr->kernel_size = download_bytes;
+ res = blk_dwrite(dev_desc, info.start, hdr_sectors, (void *)hdr);
+ if (res == 0) {
+ pr_err("cannot writeback boot image header");
+ fastboot_fail("cannot write back boot image header");
+ return -1;
+ }
+
+ /* Write the new downloaded kernel */
+ kernel_sector_start = info.start + sectors_per_page;
+ kernel_sectors = DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) *
+ sectors_per_page;
+ res = blk_dwrite(dev_desc, kernel_sector_start, kernel_sectors,
+ download_buffer);
+ if (res == 0) {
+ pr_err("cannot write new kernel");
+ fastboot_fail("cannot write new kernel");
+ return -1;
+ }
- dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
+ /* Write the saved ramdisk back */
+ ramdisk_sector_start = info.start + sectors_per_page;
+ ramdisk_sector_start += DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) *
+ sectors_per_page;
+ res = blk_dwrite(dev_desc, ramdisk_sector_start, ramdisk_sectors,
+ ramdisk_buffer);
+ if (res == 0) {
+ pr_err("cannot write back original ramdisk");
+ fastboot_fail("cannot write back original ramdisk");
+ return -1;
+ }
+
+ puts("........ zImage was updated in boot partition\n");
+ fastboot_okay("");
+ return 0;
+}
+#endif
+
+void fb_mmc_flash_write(const char *cmd, void *download_buffer,
+ unsigned int download_bytes)
+{
+ struct blk_desc *dev_desc;
+ disk_partition_t info;
+
+ dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
- error("invalid mmc device\n");
+ pr_err("invalid mmc device\n");
fastboot_fail("invalid mmc device");
return;
}
- ret = get_partition_info_efi_by_name(dev_desc, cmd, &info);
- if (ret) {
- error("cannot find partition: '%s'\n", cmd);
+#if CONFIG_IS_ENABLED(EFI_PARTITION)
+ if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
+ printf("%s: updating MBR, Primary and Backup GPT(s)\n",
+ __func__);
+ if (is_valid_gpt_buf(dev_desc, download_buffer)) {
+ printf("%s: invalid GPT - refusing to write to flash\n",
+ __func__);
+ fastboot_fail("invalid GPT partition");
+ return;
+ }
+ if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
+ printf("%s: writing GPT partitions failed\n", __func__);
+ fastboot_fail("writing GPT partitions failed");
+ return;
+ }
+ printf("........ success\n");
+ fastboot_okay("");
+ return;
+ }
+#endif
+
+#if CONFIG_IS_ENABLED(DOS_PARTITION)
+ if (strcmp(cmd, CONFIG_FASTBOOT_MBR_NAME) == 0) {
+ printf("%s: updating MBR\n", __func__);
+ if (is_valid_dos_buf(download_buffer)) {
+ printf("%s: invalid MBR - refusing to write to flash\n",
+ __func__);
+ fastboot_fail("invalid MBR partition");
+ return;
+ }
+ if (write_mbr_partition(dev_desc, download_buffer)) {
+ printf("%s: writing MBR partition failed\n", __func__);
+ fastboot_fail("writing MBR partition failed");
+ return;
+ }
+ printf("........ success\n");
+ fastboot_okay("");
+ return;
+ }
+#endif
+
+#ifdef CONFIG_ANDROID_BOOT_IMAGE
+ if (strncasecmp(cmd, "zimage", 6) == 0) {
+ fb_mmc_update_zimage(dev_desc, download_buffer, download_bytes);
+ return;
+ }
+#endif
+
+ if (part_get_info_by_name_or_alias(dev_desc, cmd, &info) < 0) {
+ pr_err("cannot find partition: '%s'\n", cmd);
fastboot_fail("cannot find partition");
return;
}
- if (is_sparse_image(download_buffer))
- write_sparse_image(dev_desc, &info, cmd, download_buffer,
+ if (is_sparse_image(download_buffer)) {
+ struct fb_mmc_sparse sparse_priv;
+ struct sparse_storage sparse;
+
+ sparse_priv.dev_desc = dev_desc;
+
+ sparse.blksz = info.blksz;
+ sparse.start = info.start;
+ sparse.size = info.size;
+ sparse.write = fb_mmc_sparse_write;
+ sparse.reserve = fb_mmc_sparse_reserve;
+
+ printf("Flashing sparse image at offset " LBAFU "\n",
+ sparse.start);
+
+ sparse.priv = &sparse_priv;
+ write_sparse_image(&sparse, cmd, download_buffer,
download_bytes);
- else
+ } else {
write_raw_image(dev_desc, &info, cmd, download_buffer,
download_bytes);
+ }
+}
+
+void fb_mmc_erase(const char *cmd)
+{
+ int ret;
+ struct blk_desc *dev_desc;
+ disk_partition_t info;
+ lbaint_t blks, blks_start, blks_size, grp_size;
+ struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
+
+ if (mmc == NULL) {
+ pr_err("invalid mmc device");
+ fastboot_fail("invalid mmc device");
+ return;
+ }
+
+ dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
+ if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
+ pr_err("invalid mmc device");
+ fastboot_fail("invalid mmc device");
+ return;
+ }
+
+ ret = part_get_info_by_name_or_alias(dev_desc, cmd, &info);
+ if (ret < 0) {
+ pr_err("cannot find partition: '%s'", cmd);
+ fastboot_fail("cannot find partition");
+ return;
+ }
+
+ /* Align blocks to erase group size to avoid erasing other partitions */
+ grp_size = mmc->erase_grp_size;
+ blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
+ if (info.size >= grp_size)
+ blks_size = (info.size - (blks_start - info.start)) &
+ (~(grp_size - 1));
+ else
+ blks_size = 0;
+
+ printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
+ blks_start, blks_start + blks_size);
+
+ blks = blk_derase(dev_desc, blks_start, blks_size);
+ if (blks != blks_size) {
+ pr_err("failed erasing from device %d", dev_desc->devnum);
+ fastboot_fail("failed erasing from device");
+ return;
+ }
+
+ printf("........ erased " LBAFU " bytes from '%s'\n",
+ blks_size * info.blksz, cmd);
+ fastboot_okay("");
}
projects / people / ms / u-boot.git / blobdiff