1 /* 2 * Copyright 2014 Broadcom Corporation. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <fb_mmc.h> 9 #include <part.h> 10 11 /* The 64 defined bytes plus the '\0' */ 12 #define RESPONSE_LEN (64 + 1) 13 14 static char *response_str; 15 16 static void fastboot_resp(const char *s) 17 { 18 strncpy(response_str, s, RESPONSE_LEN); 19 response_str[RESPONSE_LEN - 1] = '\0'; 20 } 21 22 static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info, 23 const char *part_name, void *buffer, 24 unsigned int download_bytes) 25 { 26 lbaint_t blkcnt; 27 lbaint_t blks; 28 29 /* determine number of blocks to write */ 30 blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1)); 31 blkcnt = blkcnt / info->blksz; 32 33 if (blkcnt > info->size) { 34 error("too large for partition: '%s'\n", part_name); 35 fastboot_resp("FAILtoo large for partition"); 36 return; 37 } 38 39 puts("Flashing Raw Image\n"); 40 41 blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt, 42 buffer); 43 if (blks != blkcnt) { 44 error("failed writing to device %d\n", dev_desc->dev); 45 fastboot_resp("FAILfailed writing to device"); 46 return; 47 } 48 49 printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz, 50 part_name); 51 fastboot_resp("OKAY"); 52 } 53 54 void fb_mmc_flash_write(const char *cmd, void *download_buffer, 55 unsigned int download_bytes, char *response) 56 { 57 int ret; 58 block_dev_desc_t *dev_desc; 59 disk_partition_t info; 60 61 /* initialize the response buffer */ 62 response_str = response; 63 64 dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); 65 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { 66 error("invalid mmc device\n"); 67 fastboot_resp("FAILinvalid mmc device"); 68 return; 69 } 70 71 ret = get_partition_info_efi_by_name(dev_desc, cmd, &info); 72 if (ret) { 73 error("cannot find partition: '%s'\n", cmd); 74 fastboot_resp("FAILcannot find partition"); 75 return; 76 } 77 78 write_raw_image(dev_desc, &info, cmd, download_buffer, 79 download_bytes); 80 } 81