[u-boot.git] / cmd / dcr.c

/*
 * (C) Copyright 2001
 * Erik Theisen,  Wave 7 Optics, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * AMCC 4XX DCR Functions
 */

#include <common.h>
#include <cli.h>
#include <config.h>
#include <command.h>
#include <console.h>

unsigned long get_dcr (unsigned short);
unsigned long set_dcr (unsigned short, unsigned long);

/* =======================================================================
 * Interpreter command to retrieve an AMCC PPC 4xx Device Control Register
 * =======================================================================
 */
int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
{
	unsigned short dcrn;	/* Device Control Register Num */
	unsigned long value;	/* DCR's value */

	unsigned long get_dcr (unsigned short);

	/* Validate arguments */
	if (argc < 2)
		return CMD_RET_USAGE;

	/* Get a DCR */
	dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
	value = get_dcr (dcrn);

	printf ("%04x: %08lx\n", dcrn, value);

	return 0;
}


/* ======================================================================
 * Interpreter command to set an AMCC PPC 4xx Device Control Register
 * ======================================================================
*/
int do_setdcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	unsigned short dcrn;	/* Device Control Register Num */
	unsigned long value;

	/* DCR's value */
	int nbytes;

	/* Validate arguments */
	if (argc < 2)
		return CMD_RET_USAGE;

	/* Set a DCR */
	dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
	do {
		value = get_dcr (dcrn);
		printf ("%04x: %08lx", dcrn, value);
		nbytes = cli_readline(" ? ");
		if (nbytes == 0) {
			/*
			 * <CR> pressed as only input, don't modify current
			 * location and exit command.
			 */
			nbytes = 1;
			return 0;
		} else {
			unsigned long i;
			char *endp;

			i = simple_strtoul (console_buffer, &endp, 16);
			nbytes = endp - console_buffer;
			if (nbytes)
				set_dcr (dcrn, i);
		}
	} while (nbytes);

	return 0;
}

/* =======================================================================
 * Interpreter command to retrieve an register value through AMCC PPC 4xx
 * Device Control Register inderect addressing.
 * =======================================================================
 */
int do_getidcr (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	unsigned short adr_dcrn;	/* Device Control Register Num for Address */
	unsigned short dat_dcrn;	/* Device Control Register Num for Data */
	unsigned short offset;		/* Register's offset */
	unsigned long value;		/* Register's value */
	char *ptr = NULL;
	char buf[80];

	/* Validate arguments */
	if (argc < 3)
		return CMD_RET_USAGE;

	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
	strncpy (buf, argv[1], sizeof(buf)-1);
	buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
	ptr = strchr (buf, '.');

	if (ptr != NULL) {
		/* First parameter has format adr_dcrn.dat_dcrn */
		*ptr++ = 0; /* erase '.', create zero-end string */
		adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
		dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
	} else {
		/*
		 * First parameter has format adr_dcrn; dat_dcrn will be
		 * calculated as adr_dcrn+1.
		 */
		adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
		dat_dcrn = adr_dcrn+1;
	}

	/* Register's offset */
	offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);

	/* Disable interrupts */
	disable_interrupts ();
	/* Set offset */
	set_dcr (adr_dcrn, offset);
	/* get data */
	value = get_dcr (dat_dcrn);
	/* Enable interrupts */
	enable_interrupts ();

	printf ("%04x.%04x-%04x Read  %08lx\n", adr_dcrn, dat_dcrn, offset, value);

	return 0;
}

/* =======================================================================
 * Interpreter command to update an register value through AMCC PPC 4xx
 * Device Control Register inderect addressing.
 * =======================================================================
 */
int do_setidcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	unsigned short adr_dcrn;	/* Device Control Register Num for Address */
	unsigned short dat_dcrn;	/* Device Control Register Num for Data */
	unsigned short offset;		/* Register's offset */
	unsigned long value;		/* Register's value */
	char *ptr = NULL;
	char buf[80];

	/* Validate arguments */
	if (argc < 4)
		return CMD_RET_USAGE;

	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
	strncpy (buf, argv[1], sizeof(buf)-1);
	buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
	ptr = strchr (buf, '.');

	if (ptr != NULL) {
		/* First parameter has format adr_dcrn.dat_dcrn */
		*ptr++ = 0;	/* erase '.', create zero-end string */
		adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
		dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
	} else {
		/*
		 * First parameter has format adr_dcrn; dat_dcrn will be
		 * calculated as adr_dcrn+1.
		 */
		adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
		dat_dcrn = adr_dcrn+1;
	}

	/* Register's offset */
	offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
	/* New value */
	value  = (unsigned  long) simple_strtoul (argv[3], NULL, 16);

	/* Disable interrupts */
	disable_interrupts ();
	/* Set offset */
	set_dcr (adr_dcrn, offset);
	/* set data */
	set_dcr (dat_dcrn, value);
	/* Enable interrupts */
	enable_interrupts ();

	printf ("%04x.%04x-%04x Write %08lx\n", adr_dcrn, dat_dcrn, offset, value);

	return 0;
}

/***************************************************/

U_BOOT_CMD(
	getdcr,	2,	1,	do_getdcr,
	"Get an AMCC PPC 4xx DCR's value",
	"dcrn - return a DCR's value."
);
U_BOOT_CMD(
	setdcr,	2,	1,	do_setdcr,
	"Set an AMCC PPC 4xx DCR's value",
	"dcrn - set a DCR's value."
);

U_BOOT_CMD(
	getidcr,	3,	1,	do_getidcr,
	"Get a register value via indirect DCR addressing",
	"adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn."
);

U_BOOT_CMD(
	setidcr,	4,	1,	do_setidcr,
	"Set a register value via indirect DCR addressing",
	"adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn."
);
Commit	Line	Data
3863585b WD	1	/*
	2	* (C) Copyright 2001
	3	* Erik Theisen, Wave 7 Optics, [email protected].
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
3863585b WD	6	*/
	7
	8	/*
0c8721a4	9	* AMCC 4XX DCR Functions
3863585b WD	10	*/
	11
	12	#include <common.h>
18d66533	13	#include <cli.h>
3863585b WD	14	#include <config.h>
3863585b WD	15	#include <command.h>
24b852a7	16	#include <console.h>
3863585b	17
af9e1f5b SR	18	unsigned long get_dcr (unsigned short);
	19	unsigned long set_dcr (unsigned short, unsigned long);
	20
0c8721a4 WD	21	/* =======================================================================
	22	* Interpreter command to retrieve an AMCC PPC 4xx Device Control Register
	23	* =======================================================================
3863585b	24	*/
54841ab5	25	int do_getdcr ( cmd_tbl_t cmdtp, int flag, int argc, char const argv[] )
3863585b	26	{
0c8721a4 WD	27	unsigned short dcrn; /* Device Control Register Num */
0c8721a4 WD	28	unsigned long value; /* DCR's value */
3863585b	29
0c8721a4	30	unsigned long get_dcr (unsigned short);
8bde7f77	31
0c8721a4	32	/* Validate arguments */
47e26b1b	33	if (argc < 2)
4c12eeb8	34	return CMD_RET_USAGE;
3863585b	35
0c8721a4 WD	36	/* Get a DCR */
	37	dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
	38	value = get_dcr (dcrn);
3863585b	39
0c8721a4	40	printf ("%04x: %08lx\n", dcrn, value);
3863585b	41
0c8721a4 WD	42	return 0;
0c8721a4 WD	43	}
3863585b WD	44
	45
	46	/* ======================================================================
0c8721a4	47	* Interpreter command to set an AMCC PPC 4xx Device Control Register
3863585b WD	48	* ======================================================================
3863585b WD	49	*/
54841ab5	50	int do_setdcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
3863585b	51	{
0c8721a4 WD	52	unsigned short dcrn; /* Device Control Register Num */
	53	unsigned long value;
	54
	55	/* DCR's value */
	56	int nbytes;
0c8721a4 WD	57
0c8721a4 WD	58	/* Validate arguments */
47e26b1b	59	if (argc < 2)
4c12eeb8	60	return CMD_RET_USAGE;
3863585b	61
0c8721a4 WD	62	/* Set a DCR */
	63	dcrn = (unsigned short) simple_strtoul (argv[1], NULL, 16);
	64	do {
	65	value = get_dcr (dcrn);
	66	printf ("%04x: %08lx", dcrn, value);
e1bf824d	67	nbytes = cli_readline(" ? ");
0c8721a4 WD	68	if (nbytes == 0) {
	69	/*
	70	* <CR> pressed as only input, don't modify current
	71	* location and exit command.
	72	*/
	73	nbytes = 1;
	74	return 0;
	75	} else {
	76	unsigned long i;
	77	char *endp;
	78
	79	i = simple_strtoul (console_buffer, &endp, 16);
	80	nbytes = endp - console_buffer;
	81	if (nbytes)
	82	set_dcr (dcrn, i);
	83	}
	84	} while (nbytes);
	85
	86	return 0;
	87	}
3863585b	88
af9e1f5b SR	89	/* =======================================================================
	90	* Interpreter command to retrieve an register value through AMCC PPC 4xx
	91	* Device Control Register inderect addressing.
	92	* =======================================================================
	93	*/
54841ab5	94	int do_getidcr (cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
af9e1f5b SR	95	{
	96	unsigned short adr_dcrn; /* Device Control Register Num for Address */
	97	unsigned short dat_dcrn; /* Device Control Register Num for Data */
	98	unsigned short offset; /* Register's offset */
	99	unsigned long value; /* Register's value */
	100	char *ptr = NULL;
	101	char buf[80];
	102
	103	/* Validate arguments */
47e26b1b	104	if (argc < 3)
4c12eeb8	105	return CMD_RET_USAGE;
af9e1f5b SR	106
	107	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
	108	strncpy (buf, argv[1], sizeof(buf)-1);
	109	buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
	110	ptr = strchr (buf, '.');
	111
	112	if (ptr != NULL) {
	113	/* First parameter has format adr_dcrn.dat_dcrn */
	114	ptr++ = 0; / erase '.', create zero-end string */
	115	adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
	116	dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
	117	} else {
	118	/*
	119	* First parameter has format adr_dcrn; dat_dcrn will be
	120	* calculated as adr_dcrn+1.
	121	*/
	122	adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
	123	dat_dcrn = adr_dcrn+1;
	124	}
	125
	126	/* Register's offset */
	127	offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
	128
	129	/* Disable interrupts */
	130	disable_interrupts ();
	131	/* Set offset */
	132	set_dcr (adr_dcrn, offset);
	133	/* get data */
	134	value = get_dcr (dat_dcrn);
	135	/* Enable interrupts */
	136	enable_interrupts ();
	137
	138	printf ("%04x.%04x-%04x Read %08lx\n", adr_dcrn, dat_dcrn, offset, value);
	139
	140	return 0;
	141	}
	142
	143	/* =======================================================================
	144	* Interpreter command to update an register value through AMCC PPC 4xx
	145	* Device Control Register inderect addressing.
	146	* =======================================================================
	147	*/
54841ab5	148	int do_setidcr (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
af9e1f5b SR	149	{
	150	unsigned short adr_dcrn; /* Device Control Register Num for Address */
	151	unsigned short dat_dcrn; /* Device Control Register Num for Data */
	152	unsigned short offset; /* Register's offset */
	153	unsigned long value; /* Register's value */
	154	char *ptr = NULL;
	155	char buf[80];
	156
	157	/* Validate arguments */
47e26b1b	158	if (argc < 4)
4c12eeb8	159	return CMD_RET_USAGE;
af9e1f5b SR	160
	161	/* Find out whether ther is '.' (dot) symbol in the first parameter. */
	162	strncpy (buf, argv[1], sizeof(buf)-1);
	163	buf[sizeof(buf)-1] = 0; /* will guarantee zero-end string */
	164	ptr = strchr (buf, '.');
	165
	166	if (ptr != NULL) {
	167	/* First parameter has format adr_dcrn.dat_dcrn */
	168	ptr++ = 0; / erase '.', create zero-end string */
	169	adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
	170	dat_dcrn = (unsigned short) simple_strtoul (ptr, NULL, 16);
	171	} else {
	172	/*
	173	* First parameter has format adr_dcrn; dat_dcrn will be
	174	* calculated as adr_dcrn+1.
	175	*/
2b2a40be WD	176	adr_dcrn = (unsigned short) simple_strtoul (buf, NULL, 16);
	177	dat_dcrn = adr_dcrn+1;
	178	}
af9e1f5b SR	179
	180	/* Register's offset */
	181	offset = (unsigned short) simple_strtoul (argv[2], NULL, 16);
	182	/* New value */
	183	value = (unsigned long) simple_strtoul (argv[3], NULL, 16);
	184
	185	/* Disable interrupts */
	186	disable_interrupts ();
	187	/* Set offset */
	188	set_dcr (adr_dcrn, offset);
	189	/* set data */
	190	set_dcr (dat_dcrn, value);
	191	/* Enable interrupts */
	192	enable_interrupts ();
	193
	194	printf ("%04x.%04x-%04x Write %08lx\n", adr_dcrn, dat_dcrn, offset, value);
	195
	196	return 0;
	197	}
	198
8bde7f77 WD	199	/***************************************************/
8bde7f77 WD	200
0d498393 WD	201	U_BOOT_CMD(
0d498393 WD	202	getdcr, 2, 1, do_getdcr,
2fb2604d	203	"Get an AMCC PPC 4xx DCR's value",
a89c33db	204	"dcrn - return a DCR's value."
8bde7f77	205	);
0d498393 WD	206	U_BOOT_CMD(
0d498393 WD	207	setdcr, 2, 1, do_setdcr,
2fb2604d	208	"Set an AMCC PPC 4xx DCR's value",
a89c33db	209	"dcrn - set a DCR's value."
8bde7f77 WD	210	);
8bde7f77 WD	211
af9e1f5b SR	212	U_BOOT_CMD(
af9e1f5b SR	213	getidcr, 3, 1, do_getidcr,
2fb2604d	214	"Get a register value via indirect DCR addressing",
a89c33db	215	"adr_dcrn[.dat_dcrn] offset - write offset to adr_dcrn, read value from dat_dcrn."
af9e1f5b SR	216	);
	217
	218	U_BOOT_CMD(
	219	setidcr, 4, 1, do_setidcr,
2fb2604d	220	"Set a register value via indirect DCR addressing",
a89c33db	221	"adr_dcrn[.dat_dcrn] offset value - write offset to adr_dcrn, write value to dat_dcrn."
af9e1f5b	222	);