138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
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* (C) Copyright 2001
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* Denis Peter, MPL AG Switzerland
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* SCSI support.
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*/
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#include <common.h>
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#include <command.h>
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#include <scsi.h>
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static int scsi_curr_dev; /* current device */
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/*
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* scsi boot command intepreter. Derived from diskboot
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*/
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int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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return common_diskboot(cmdtp, "scsi", argc, argv);
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}
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/*
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* scsi command intepreter
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*/
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int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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switch (argc) {
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case 0:
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case 1:
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return CMD_RET_USAGE;
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case 2:
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if (strncmp(argv[1], "res", 3) == 0) {
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printf("\nReset SCSI\n");
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scsi_bus_reset();
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1], "inf", 3) == 0) {
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blk_list_devices(IF_TYPE_SCSI);
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return 0;
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}
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if (strncmp(argv[1], "dev", 3) == 0) {
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if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) {
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printf("\nno SCSI devices available\n");
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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if (strncmp(argv[1], "scan", 4) == 0) {
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1], "part", 4) == 0) {
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if (blk_list_part(IF_TYPE_SCSI))
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printf("\nno SCSI devices available\n");
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return 0;
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}
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return CMD_RET_USAGE;
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case 3:
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if (strncmp(argv[1], "dev", 3) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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if (!blk_show_device(IF_TYPE_SCSI, dev)) {
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scsi_curr_dev = dev;
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printf("... is now current device\n");
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} else {
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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if (strncmp(argv[1], "part", 4) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) {
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printf("\nSCSI device %d not available\n",
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dev);
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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return CMD_RET_USAGE;
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default:
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/* at least 4 args */
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if (strcmp(argv[1], "read") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf("\nSCSI read: device %d block # %ld, count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
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cnt, (ulong *)addr);
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printf("%ld blocks read: %s\n", n,
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n == cnt ? "OK" : "ERROR");
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return 0;
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} else if (strcmp(argv[1], "write") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf("\nSCSI write: device %d block # %ld, count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
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cnt, (ulong *)addr);
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printf("%ld blocks written: %s\n", n,
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n == cnt ? "OK" : "ERROR");
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return 0;
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}
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} /* switch */
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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scsi, 5, 1, do_scsi,
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"SCSI sub-system",
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"reset - reset SCSI controller\n"
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"scsi info - show available SCSI devices\n"
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"scsi scan - (re-)scan SCSI bus\n"
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"scsi device [dev] - show or set current device\n"
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"scsi part [dev] - print partition table of one or all SCSI devices\n"
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"scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
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" to memory address `addr'\n"
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"scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
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" `blk#' from memory address `addr'"
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);
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U_BOOT_CMD(
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scsiboot, 3, 1, do_scsiboot,
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"boot from SCSI device",
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"loadAddr dev:part"
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);
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