1 /* 2 * Copyright 2014 Broadcom Corporation. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <config.h> 8 #include <common.h> 9 #include <fb_mmc.h> 10 #include <part.h> 11 #include <aboot.h> 12 #include <sparse_format.h> 13 14 #ifndef CONFIG_FASTBOOT_GPT_NAME 15 #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME 16 #endif 17 18 /* The 64 defined bytes plus the '\0' */ 19 #define RESPONSE_LEN (64 + 1) 20 21 static char *response_str; 22 23 void fastboot_fail(const char *s) 24 { 25 strncpy(response_str, "FAIL", 4); 26 strncat(response_str, s, RESPONSE_LEN - 4 - 1); 27 } 28 29 void fastboot_okay(const char *s) 30 { 31 strncpy(response_str, "OKAY", 4); 32 strncat(response_str, s, RESPONSE_LEN - 4 - 1); 33 } 34 35 static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info, 36 const char *part_name, void *buffer, 37 unsigned int download_bytes) 38 { 39 lbaint_t blkcnt; 40 lbaint_t blks; 41 42 /* determine number of blocks to write */ 43 blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1)); 44 blkcnt = blkcnt / info->blksz; 45 46 if (blkcnt > info->size) { 47 error("too large for partition: '%s'\n", part_name); 48 fastboot_fail("too large for partition"); 49 return; 50 } 51 52 puts("Flashing Raw Image\n"); 53 54 blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt, 55 buffer); 56 if (blks != blkcnt) { 57 error("failed writing to device %d\n", dev_desc->dev); 58 fastboot_fail("failed writing to device"); 59 return; 60 } 61 62 printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz, 63 part_name); 64 fastboot_okay(""); 65 } 66 67 void fb_mmc_flash_write(const char *cmd, void *download_buffer, 68 unsigned int download_bytes, char *response) 69 { 70 block_dev_desc_t *dev_desc; 71 disk_partition_t info; 72 73 /* initialize the response buffer */ 74 response_str = response; 75 76 dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); 77 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { 78 error("invalid mmc device\n"); 79 fastboot_fail("invalid mmc device"); 80 return; 81 } 82 83 if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) { 84 printf("%s: updating MBR, Primary and Backup GPT(s)\n", 85 __func__); 86 if (is_valid_gpt_buf(dev_desc, download_buffer)) { 87 printf("%s: invalid GPT - refusing to write to flash\n", 88 __func__); 89 fastboot_fail("invalid GPT partition"); 90 return; 91 } 92 if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) { 93 printf("%s: writing GPT partitions failed\n", __func__); 94 fastboot_fail("writing GPT partitions failed"); 95 return; 96 } 97 printf("........ success\n"); 98 fastboot_okay(""); 99 return; 100 } else if (get_partition_info_efi_by_name(dev_desc, cmd, &info)) { 101 error("cannot find partition: '%s'\n", cmd); 102 fastboot_fail("cannot find partition"); 103 return; 104 } 105 106 if (is_sparse_image(download_buffer)) 107 write_sparse_image(dev_desc, &info, cmd, download_buffer, 108 download_bytes); 109 else 110 write_raw_image(dev_desc, &info, cmd, download_buffer, 111 download_bytes); 112 } 113