1 /* 2 * Copyright (c) 2012, Google Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <fs.h> 10 #include <part.h> 11 #include <sandboxblockdev.h> 12 #include <linux/errno.h> 13 14 static int host_curr_device = -1; 15 16 static int do_host_load(cmd_tbl_t *cmdtp, int flag, int argc, 17 char * const argv[]) 18 { 19 return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX); 20 } 21 22 static int do_host_ls(cmd_tbl_t *cmdtp, int flag, int argc, 23 char * const argv[]) 24 { 25 return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX); 26 } 27 28 static int do_host_size(cmd_tbl_t *cmdtp, int flag, int argc, 29 char * const argv[]) 30 { 31 return do_size(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX); 32 } 33 34 static int do_host_save(cmd_tbl_t *cmdtp, int flag, int argc, 35 char * const argv[]) 36 { 37 return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX); 38 } 39 40 static int do_host_bind(cmd_tbl_t *cmdtp, int flag, int argc, 41 char * const argv[]) 42 { 43 if (argc < 2 || argc > 3) 44 return CMD_RET_USAGE; 45 char *ep; 46 char *dev_str = argv[1]; 47 char *file = argc >= 3 ? argv[2] : NULL; 48 int dev = simple_strtoul(dev_str, &ep, 16); 49 if (*ep) { 50 printf("** Bad device specification %s **\n", dev_str); 51 return CMD_RET_USAGE; 52 } 53 return host_dev_bind(dev, file); 54 } 55 56 static int do_host_info(cmd_tbl_t *cmdtp, int flag, int argc, 57 char * const argv[]) 58 { 59 if (argc < 1 || argc > 2) 60 return CMD_RET_USAGE; 61 int min_dev = 0; 62 int max_dev = CONFIG_HOST_MAX_DEVICES - 1; 63 if (argc >= 2) { 64 char *ep; 65 char *dev_str = argv[1]; 66 int dev = simple_strtoul(dev_str, &ep, 16); 67 if (*ep) { 68 printf("** Bad device specification %s **\n", dev_str); 69 return CMD_RET_USAGE; 70 } 71 min_dev = dev; 72 max_dev = dev; 73 } 74 int dev; 75 printf("%3s %12s %s\n", "dev", "blocks", "path"); 76 for (dev = min_dev; dev <= max_dev; dev++) { 77 struct blk_desc *blk_dev; 78 int ret; 79 80 printf("%3d ", dev); 81 ret = host_get_dev_err(dev, &blk_dev); 82 if (ret) { 83 if (ret == -ENOENT) 84 puts("Not bound to a backing file\n"); 85 else if (ret == -ENODEV) 86 puts("Invalid host device number\n"); 87 88 continue; 89 } 90 struct host_block_dev *host_dev; 91 92 #ifdef CONFIG_BLK 93 host_dev = dev_get_priv(blk_dev->bdev); 94 #else 95 host_dev = blk_dev->priv; 96 #endif 97 printf("%12lu %s\n", (unsigned long)blk_dev->lba, 98 host_dev->filename); 99 } 100 return 0; 101 } 102 103 static int do_host_dev(cmd_tbl_t *cmdtp, int flag, int argc, 104 char * const argv[]) 105 { 106 int dev; 107 char *ep; 108 struct blk_desc *blk_dev; 109 int ret; 110 111 if (argc < 1 || argc > 3) 112 return CMD_RET_USAGE; 113 114 if (argc == 1) { 115 if (host_curr_device < 0) { 116 printf("No current host device\n"); 117 return 1; 118 } 119 printf("Current host device %d\n", host_curr_device); 120 return 0; 121 } 122 123 dev = simple_strtoul(argv[1], &ep, 16); 124 if (*ep) { 125 printf("** Bad device specification %s **\n", argv[2]); 126 return CMD_RET_USAGE; 127 } 128 129 ret = host_get_dev_err(dev, &blk_dev); 130 if (ret) { 131 if (ret == -ENOENT) 132 puts("Not bound to a backing file\n"); 133 else if (ret == -ENODEV) 134 puts("Invalid host device number\n"); 135 136 return 1; 137 } 138 139 host_curr_device = dev; 140 return 0; 141 } 142 143 static cmd_tbl_t cmd_host_sub[] = { 144 U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""), 145 U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""), 146 U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""), 147 U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""), 148 U_BOOT_CMD_MKENT(bind, 3, 0, do_host_bind, "", ""), 149 U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""), 150 U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""), 151 }; 152 153 static int do_host(cmd_tbl_t *cmdtp, int flag, int argc, 154 char * const argv[]) 155 { 156 cmd_tbl_t *c; 157 158 /* Skip past 'host' */ 159 argc--; 160 argv++; 161 162 c = find_cmd_tbl(argv[0], cmd_host_sub, 163 ARRAY_SIZE(cmd_host_sub)); 164 165 if (c) 166 return c->cmd(cmdtp, flag, argc, argv); 167 else 168 return CMD_RET_USAGE; 169 } 170 171 U_BOOT_CMD( 172 sb, 8, 1, do_host, 173 "Deprecated: use 'host' command instead.", "" 174 ); 175 176 U_BOOT_CMD( 177 host, 8, 1, do_host, 178 "Miscellaneous host commands", 179 "load hostfs - <addr> <filename> [<bytes> <offset>] - " 180 "load a file from host\n" 181 "host ls hostfs - <filename> - list files on host\n" 182 "host save hostfs - <addr> <filename> <bytes> [<offset>] - " 183 "save a file to host\n" 184 "host size hostfs - <filename> - determine size of file on host" 185 "host bind <dev> [<filename>] - bind \"host\" device to file\n" 186 "host info [<dev>] - show device binding & info\n" 187 "host dev [<dev>] - Set or retrieve the current host device\n" 188 "host commands use the \"hostfs\" device. The \"host\" device is used\n" 189 "with standard IO commands such as fatls or ext2load" 190 ); 191