1 /* 2 * (C) Copyright 2001 3 * Denis Peter, MPL AG Switzerland 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * SCSI support. 10 */ 11 #include <common.h> 12 #include <command.h> 13 #include <scsi.h> 14 15 static int scsi_curr_dev; /* current device */ 16 17 /* 18 * scsi boot command intepreter. Derived from diskboot 19 */ 20 static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) 21 { 22 return common_diskboot(cmdtp, "scsi", argc, argv); 23 } 24 25 /* 26 * scsi command intepreter 27 */ 28 static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) 29 { 30 int ret; 31 32 switch (argc) { 33 case 0: 34 case 1: 35 return CMD_RET_USAGE; 36 case 2: 37 if (strncmp(argv[1], "res", 3) == 0) { 38 printf("\nReset SCSI\n"); 39 #ifndef CONFIG_DM_SCSI 40 scsi_bus_reset(NULL); 41 #endif 42 ret = scsi_scan(true); 43 if (ret) 44 return CMD_RET_FAILURE; 45 return ret; 46 } 47 if (strncmp(argv[1], "inf", 3) == 0) { 48 blk_list_devices(IF_TYPE_SCSI); 49 return 0; 50 } 51 if (strncmp(argv[1], "dev", 3) == 0) { 52 if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) { 53 printf("\nno SCSI devices available\n"); 54 return CMD_RET_FAILURE; 55 } 56 57 return 0; 58 } 59 if (strncmp(argv[1], "scan", 4) == 0) { 60 ret = scsi_scan(true); 61 if (ret) 62 return CMD_RET_FAILURE; 63 return ret; 64 } 65 if (strncmp(argv[1], "part", 4) == 0) { 66 if (blk_list_part(IF_TYPE_SCSI)) 67 printf("\nno SCSI devices available\n"); 68 return 0; 69 } 70 return CMD_RET_USAGE; 71 case 3: 72 if (strncmp(argv[1], "dev", 3) == 0) { 73 int dev = (int)simple_strtoul(argv[2], NULL, 10); 74 75 if (!blk_show_device(IF_TYPE_SCSI, dev)) { 76 scsi_curr_dev = dev; 77 printf("... is now current device\n"); 78 } else { 79 return CMD_RET_FAILURE; 80 } 81 return 0; 82 } 83 if (strncmp(argv[1], "part", 4) == 0) { 84 int dev = (int)simple_strtoul(argv[2], NULL, 10); 85 86 if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) { 87 printf("\nSCSI device %d not available\n", 88 dev); 89 return CMD_RET_FAILURE; 90 } 91 return 0; 92 } 93 return CMD_RET_USAGE; 94 default: 95 /* at least 4 args */ 96 if (strcmp(argv[1], "read") == 0) { 97 ulong addr = simple_strtoul(argv[2], NULL, 16); 98 ulong blk = simple_strtoul(argv[3], NULL, 16); 99 ulong cnt = simple_strtoul(argv[4], NULL, 16); 100 ulong n; 101 102 printf("\nSCSI read: device %d block # %ld, count %ld ... ", 103 scsi_curr_dev, blk, cnt); 104 n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk, 105 cnt, (ulong *)addr); 106 printf("%ld blocks read: %s\n", n, 107 n == cnt ? "OK" : "ERROR"); 108 return 0; 109 } else if (strcmp(argv[1], "write") == 0) { 110 ulong addr = simple_strtoul(argv[2], NULL, 16); 111 ulong blk = simple_strtoul(argv[3], NULL, 16); 112 ulong cnt = simple_strtoul(argv[4], NULL, 16); 113 ulong n; 114 115 printf("\nSCSI write: device %d block # %ld, count %ld ... ", 116 scsi_curr_dev, blk, cnt); 117 n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk, 118 cnt, (ulong *)addr); 119 printf("%ld blocks written: %s\n", n, 120 n == cnt ? "OK" : "ERROR"); 121 return 0; 122 } 123 } /* switch */ 124 return CMD_RET_USAGE; 125 } 126 127 U_BOOT_CMD( 128 scsi, 5, 1, do_scsi, 129 "SCSI sub-system", 130 "reset - reset SCSI controller\n" 131 "scsi info - show available SCSI devices\n" 132 "scsi scan - (re-)scan SCSI bus\n" 133 "scsi device [dev] - show or set current device\n" 134 "scsi part [dev] - print partition table of one or all SCSI devices\n" 135 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n" 136 " to memory address `addr'\n" 137 "scsi write addr blk# cnt - write `cnt' blocks starting at block\n" 138 " `blk#' from memory address `addr'" 139 ); 140 141 U_BOOT_CMD( 142 scsiboot, 3, 1, do_scsiboot, 143 "boot from SCSI device", 144 "loadAddr dev:part" 145 ); 146