340 lines
9.0 KiB
C
340 lines
9.0 KiB
C
/*
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* Copyright 2014 Broadcom Corporation.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <fb_mmc.h>
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#include <part.h>
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#include <aboot.h>
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#include <sparse_format.h>
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#include <mmc.h>
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#include <fb_fastboot.h>
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#include <amlogic/aml_mmc.h>
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#ifndef CONFIG_FASTBOOT_GPT_NAME
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#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
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#endif
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#ifndef CONFIG_FASTBOOT_MBR_NAME
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#define CONFIG_FASTBOOT_MBR_NAME "mbr"
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#endif
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/* The 64 defined bytes plus the '\0' */
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struct fb_mmc_sparse {
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block_dev_desc_t *dev_desc;
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};
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#ifdef CONFIG_EFI_PARTITION
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static int part_get_info_efi_by_name_or_alias(block_dev_desc_t *dev_desc,
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const char *name, disk_partition_t *info)
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{
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int ret;
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ret = get_partition_info_efi_by_name(dev_desc, name, info);
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if (ret) {
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/* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
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char env_alias_name[25 + 32 + 1];
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char *aliased_part_name;
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/* check for alias */
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strcpy(env_alias_name, "fastboot_partition_alias_");
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strncat(env_alias_name, name, 32);
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aliased_part_name = getenv(env_alias_name);
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if (aliased_part_name != NULL)
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ret = get_partition_info_efi_by_name(dev_desc,
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aliased_part_name, info);
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}
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return ret;
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}
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#endif
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static lbaint_t fb_mmc_sparse_write(struct sparse_storage *info,
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lbaint_t blk, lbaint_t blkcnt, const void *buffer)
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{
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struct fb_mmc_sparse *sparse = info->priv;
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block_dev_desc_t *dev_desc = sparse->dev_desc;
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return dev_desc->block_write(dev_desc->dev, blk, blkcnt,
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buffer);
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}
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static lbaint_t fb_mmc_sparse_reserve(struct sparse_storage *info,
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lbaint_t blk, lbaint_t blkcnt)
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{
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return blkcnt;
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}
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static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info,
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const char *part_name, void *buffer,
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unsigned int download_bytes)
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{
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lbaint_t blkcnt;
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lbaint_t blks;
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/* determine number of blocks to write */
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blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
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blkcnt = blkcnt / info->blksz;
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if (blkcnt > info->size) {
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error("too large for partition: '%s'\n", part_name);
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fastboot_fail("too large for partition");
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return;
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}
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puts("Flashing Raw Image\n");
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blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt,
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buffer);
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if (blks != blkcnt) {
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error("failed writing to device %d\n", dev_desc->dev);
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fastboot_fail("failed writing to device");
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return;
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}
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printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
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part_name);
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fastboot_okay("");
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}
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/* erase or flash, when buffer is not NULL, it's write */
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static void fb_mmc_bootloader_ops(const char *cmd,
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block_dev_desc_t *dev_desc, void *buffer,
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unsigned int bytes)
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{
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char *delim = "-";
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char *hwpart;
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int map = 0, ret = 0;
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char *scmd = (char *) cmd;
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char *ops[] = {"erase", "write"};
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hwpart = strchr(scmd, (int)*delim);
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if (!hwpart) {
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map = AML_BL_USER;
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} else if (!strcmp(hwpart, "-boot0")) {
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map = AML_BL_BOOT0;
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} else if (!strcmp(hwpart, "-boot1")) {
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map = AML_BL_BOOT1;
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}
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if (map) {
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if (buffer)
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ret = amlmmc_write_bootloader(CONFIG_FASTBOOT_FLASH_MMC_DEV, map,
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bytes, buffer);
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else
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ret = amlmmc_erase_bootloader(CONFIG_FASTBOOT_FLASH_MMC_DEV, map);
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if (ret) {
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error("failed %s %s from device %d", (buffer? ops[1]: ops[0]),
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cmd, dev_desc->dev);
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fastboot_fail("failed bootloader operating to device");
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return;
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}
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printf("........ %s %s\n", (buffer? ops[1]: ops[0]), cmd);
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fastboot_okay("");
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} else
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fastboot_fail("failed operating from device");
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return;
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}
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/**
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* write bootloader on user/boot0/boot1
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* according to bootloader name.
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*/
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static void fb_mmc_write_bootloader(const char *cmd,
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block_dev_desc_t *dev_desc, void *buffer, unsigned int bytes)
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{
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return fb_mmc_bootloader_ops(cmd, dev_desc, buffer, bytes);
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}
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/**
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* erase bootloader on user/boot0/boot1
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* according to bootloader name.
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*/
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static void fb_mmc_erase_bootloader(const char *cmd, block_dev_desc_t *dev_desc)
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{
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return fb_mmc_bootloader_ops(cmd, dev_desc, NULL, 0);
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}
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void fb_mmc_flash_write(const char *cmd, void *download_buffer,
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unsigned int download_bytes)
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{
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block_dev_desc_t *dev_desc;
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disk_partition_t info = {1, 1, 1};
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int ret = 0;
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dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
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error("invalid mmc device\n");
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fastboot_fail("invalid mmc device");
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return;
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}
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#ifdef CONFIG_EFI_PARTITION
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if (dev_desc->part_type == PART_TYPE_EFI) {
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if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
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printf("%s: updating MBR, Primary and Backup GPT(s)\n",
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__func__);
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if (is_valid_gpt_buf(dev_desc, download_buffer)) {
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printf("%s: invalid GPT - refusing to write to flash\n",
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__func__);
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fastboot_fail("invalid GPT partition");
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return;
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}
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if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
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printf("%s: writing GPT partitions failed\n", __func__);
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fastboot_fail("writing GPT partitions failed");
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return;
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}
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printf("........ success\n");
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fastboot_okay("");
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return;
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} else if (strncmp(cmd, "bootloader", 10)) {
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if (strcmp(cmd, "dtb") != 0) {
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if (get_partition_info_efi_by_name(dev_desc, cmd, &info)) {
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error("cannot find partition: '%s'\n", cmd);
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fastboot_fail("cannot find partition");
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return;
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}
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}
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}
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}
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#endif
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#ifdef CONFIG_AML_PARTITION
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if ((dev_desc->part_type == PART_TYPE_AML)
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|| (dev_desc->part_type == PART_TYPE_DOS)
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|| (!strcmp(cmd, CONFIG_FASTBOOT_MBR_NAME))) {
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if (strcmp(cmd, CONFIG_FASTBOOT_MBR_NAME) == 0) {
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printf("%s: updating MBR\n", __func__);
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ret = emmc_update_mbr(download_buffer);
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if (ret)
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fastboot_fail("fastboot update mbr fail");
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else
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fastboot_okay("");
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return;
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}
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if (get_partition_info_aml_by_name(dev_desc, cmd, &info)) {
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error("cannot find partition: '%s'\n", cmd);
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fastboot_fail("cannot find partition");
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return;
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}
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}
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#endif
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if (strcmp(cmd, "dtb") == 0) {
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#ifndef DTB_BIND_KERNEL
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ret = dtb_write(download_buffer);
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if (ret)
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fastboot_fail("fastboot write dtb fail");
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else {
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/* renew partition table @ once*/
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if (renew_partition_tbl(download_buffer))
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fastboot_fail("fastboot write dtb fail");
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fastboot_okay("");
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}
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#else
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fastboot_fail("dtb is bind in kernel, return");
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#endif
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} else if (!strncmp(cmd, "bootloader", strlen("bootloader"))) {
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fb_mmc_write_bootloader(cmd, dev_desc, download_buffer, download_bytes);
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return;
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} else {
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if (is_sparse_image(download_buffer)) {
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struct fb_mmc_sparse sparse_priv = {};
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struct sparse_storage sparse = {};
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sparse_priv.dev_desc = dev_desc;
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sparse.blksz = info.blksz;
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sparse.start = info.start;
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sparse.size = info.size;
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sparse.write = fb_mmc_sparse_write;
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sparse.reserve = fb_mmc_sparse_reserve;
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printf("Flashing sparse image at offset " LBAFU "\n",
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sparse.start);
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sparse.priv = &sparse_priv;
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write_sparse_image(&sparse, cmd, download_buffer,
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download_bytes);
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} else
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write_raw_image(dev_desc, &info, cmd, download_buffer,
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download_bytes);
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}
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}
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void fb_mmc_erase_write(const char *cmd, void *download_buffer)
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{
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int ret = 0;
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block_dev_desc_t *dev_desc;
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disk_partition_t info = {1, 1, 1};
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lbaint_t blks, blks_start, blks_size, grp_size;
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struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (mmc == NULL) {
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error("invalid mmc device");
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fastboot_fail("invalid mmc device");
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return;
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}
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dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
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error("invalid mmc device");
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fastboot_fail("invalid mmc device");
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return;
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}
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#ifdef CONFIG_EFI_PARTITION
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if (dev_desc->part_type == PART_TYPE_EFI) {
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if (!strncmp(cmd, "bootloader", strlen("bootloader"))) {
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ret = erase_gpt_part_table(dev_desc);
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if (ret) {
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printf("%s, failed erase gpt", __func__);
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return;
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}
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} else {
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ret = part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info);
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}
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}
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#endif
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#ifdef CONFIG_AML_PARTITION
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if ((dev_desc->part_type == PART_TYPE_AML)
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|| (dev_desc->part_type == PART_TYPE_DOS))
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ret = get_partition_info_aml_by_name(dev_desc, cmd, &info);
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#endif
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if (ret) {
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error("cannot find partition: '%s'", cmd);
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fastboot_fail("cannot find partition");
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return;
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}
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/* special operation for bootloader */
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if (strcmp(cmd, "bootloader") == 0 || strcmp(cmd, "bootloader-boot0") == 0 ||
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strcmp(cmd, "bootloader-boot1") == 0) {
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fb_mmc_erase_bootloader(cmd, dev_desc);
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return;
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} else {
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/* Align blocks to erase group size to avoid erasing other partitions */
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grp_size = mmc->erase_grp_size;
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blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
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if (info.size >= grp_size)
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blks_size = (info.size - (blks_start - info.start)) &
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(~(grp_size - 1));
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else
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blks_size = 0;
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printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
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blks_start, blks_start + blks_size);
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blks = dev_desc->block_erase(dev_desc->dev, blks_start, blks_size);
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if (blks != 0) {
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error("failed erasing from device %d", dev_desc->dev);
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fastboot_fail("failed erasing from device");
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return;
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}
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printf("........ erased " LBAFU " bytes from '%s'\n",
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blks_size * info.blksz, cmd);
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fastboot_okay("");
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}
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}
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