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 if (argc == 2) { 33 if (strncmp(argv[1], "res", 3) == 0) { 34 printf("\nReset SCSI\n"); 35 #ifndef CONFIG_DM_SCSI 36 scsi_bus_reset(NULL); 37 #endif 38 ret = scsi_scan(true); 39 if (ret) 40 return CMD_RET_FAILURE; 41 return ret; 42 } 43 if (strncmp(argv[1], "scan", 4) == 0) { 44 ret = scsi_scan(true); 45 if (ret) 46 return CMD_RET_FAILURE; 47 return ret; 48 } 49 } 50 51 return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev); 52 } 53 54 U_BOOT_CMD( 55 scsi, 5, 1, do_scsi, 56 "SCSI sub-system", 57 "reset - reset SCSI controller\n" 58 "scsi info - show available SCSI devices\n" 59 "scsi scan - (re-)scan SCSI bus\n" 60 "scsi device [dev] - show or set current device\n" 61 "scsi part [dev] - print partition table of one or all SCSI devices\n" 62 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n" 63 " to memory address `addr'\n" 64 "scsi write addr blk# cnt - write `cnt' blocks starting at block\n" 65 " `blk#' from memory address `addr'" 66 ); 67 68 U_BOOT_CMD( 69 scsiboot, 3, 1, do_scsiboot, 70 "boot from SCSI device", 71 "loadAddr dev:part" 72 ); 73