Git Repo - u-boot.git/blame_incremental

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Commit	Line	Data
	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	);