[J-u-boot.git] / drivers / fpga / spartan3.c

/*
 * (C) Copyright 2002
 * Rich Ireland, Enterasys Networks, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * Configuration support for Xilinx Spartan3 devices.  Based
 * on spartan2.c (Rich Ireland, [email protected]).
 */

#include <common.h>		/* core U-Boot definitions */
#include <spartan3.h>		/* Spartan-II device family */

/* Define FPGA_DEBUG to get debug printf's */
#ifdef	FPGA_DEBUG
#define PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif

#undef CONFIG_SYS_FPGA_CHECK_BUSY

/* Note: The assumption is that we cannot possibly run fast enough to
 * overrun the device (the Slave Parallel mode can free run at 50MHz).
 * If there is a need to operate slower, define CONFIG_FPGA_DELAY in
 * the board config file to slow things down.
 */
#ifndef CONFIG_FPGA_DELAY
#define CONFIG_FPGA_DELAY()
#endif

#ifndef CONFIG_SYS_FPGA_WAIT
#define CONFIG_SYS_FPGA_WAIT CONFIG_SYS_HZ/100	/* 10 ms */
#endif

static int spartan3_sp_load(xilinx_desc *desc, const void *buf, size_t bsize);
static int spartan3_sp_dump(xilinx_desc *desc, const void *buf, size_t bsize);
/* static int spartan3_sp_info(xilinx_desc *desc ); */

static int spartan3_ss_load(xilinx_desc *desc, const void *buf, size_t bsize);
static int spartan3_ss_dump(xilinx_desc *desc, const void *buf, size_t bsize);
/* static int spartan3_ss_info(xilinx_desc *desc); */

/* ------------------------------------------------------------------------- */
/* Spartan-II Generic Implementation */
static int spartan3_load(xilinx_desc *desc, const void *buf, size_t bsize,
			 bitstream_type bstype)
{
	int ret_val = FPGA_FAIL;

	switch (desc->iface) {
	case slave_serial:
		PRINTF ("%s: Launching Slave Serial Load\n", __FUNCTION__);
		ret_val = spartan3_ss_load(desc, buf, bsize);
		break;

	case slave_parallel:
		PRINTF ("%s: Launching Slave Parallel Load\n", __FUNCTION__);
		ret_val = spartan3_sp_load(desc, buf, bsize);
		break;

	default:
		printf ("%s: Unsupported interface type, %d\n",
				__FUNCTION__, desc->iface);
	}

	return ret_val;
}

static int spartan3_dump(xilinx_desc *desc, const void *buf, size_t bsize)
{
	int ret_val = FPGA_FAIL;

	switch (desc->iface) {
	case slave_serial:
		PRINTF ("%s: Launching Slave Serial Dump\n", __FUNCTION__);
		ret_val = spartan3_ss_dump(desc, buf, bsize);
		break;

	case slave_parallel:
		PRINTF ("%s: Launching Slave Parallel Dump\n", __FUNCTION__);
		ret_val = spartan3_sp_dump(desc, buf, bsize);
		break;

	default:
		printf ("%s: Unsupported interface type, %d\n",
				__FUNCTION__, desc->iface);
	}

	return ret_val;
}

static int spartan3_info(xilinx_desc *desc)
{
	return FPGA_SUCCESS;
}


/* ------------------------------------------------------------------------- */
/* Spartan-II Slave Parallel Generic Implementation */

static int spartan3_sp_load(xilinx_desc *desc, const void *buf, size_t bsize)
{
	int ret_val = FPGA_FAIL;	/* assume the worst */
	xilinx_spartan3_slave_parallel_fns *fn = desc->iface_fns;

	PRINTF ("%s: start with interface functions @ 0x%p\n",
			__FUNCTION__, fn);

	if (fn) {
		size_t bytecount = 0;
		unsigned char *data = (unsigned char *) buf;
		int cookie = desc->cookie;	/* make a local copy */
		unsigned long ts;		/* timestamp */

		PRINTF ("%s: Function Table:\n"
				"ptr:\t0x%p\n"
				"struct: 0x%p\n"
				"pre: 0x%p\n"
				"pgm:\t0x%p\n"
				"init:\t0x%p\n"
				"err:\t0x%p\n"
				"clk:\t0x%p\n"
				"cs:\t0x%p\n"
				"wr:\t0x%p\n"
				"read data:\t0x%p\n"
				"write data:\t0x%p\n"
				"busy:\t0x%p\n"
				"abort:\t0x%p\n",
				"post:\t0x%p\n\n",
				__FUNCTION__, &fn, fn, fn->pre, fn->pgm, fn->init, fn->err,
				fn->clk, fn->cs, fn->wr, fn->rdata, fn->wdata, fn->busy,
				fn->abort, fn->post);

		/*
		 * This code is designed to emulate the "Express Style"
		 * Continuous Data Loading in Slave Parallel Mode for
		 * the Spartan-II Family.
		 */
#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		printf ("Loading FPGA Device %d...\n", cookie);
#endif
		/*
		 * Run the pre configuration function if there is one.
		 */
		if (*fn->pre) {
			(*fn->pre) (cookie);
		}

		/* Establish the initial state */
		(*fn->pgm) (true, true, cookie);	/* Assert the program, commit */

		/* Get ready for the burn */
		CONFIG_FPGA_DELAY ();
		(*fn->pgm) (false, true, cookie);	/* Deassert the program, commit */

		ts = get_timer (0);		/* get current time */
		/* Now wait for INIT and BUSY to go high */
		do {
			CONFIG_FPGA_DELAY ();
			if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
				puts ("** Timeout waiting for INIT to clear.\n");
				(*fn->abort) (cookie);	/* abort the burn */
				return FPGA_FAIL;
			}
		} while ((*fn->init) (cookie) && (*fn->busy) (cookie));

		(*fn->wr) (true, true, cookie); /* Assert write, commit */
		(*fn->cs) (true, true, cookie); /* Assert chip select, commit */
		(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

		/* Load the data */
		while (bytecount < bsize) {
			/* XXX - do we check for an Ctrl-C press in here ??? */
			/* XXX - Check the error bit? */

			(*fn->wdata) (data[bytecount++], true, cookie); /* write the data */
			CONFIG_FPGA_DELAY ();
			(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
			CONFIG_FPGA_DELAY ();
			(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

#ifdef CONFIG_SYS_FPGA_CHECK_BUSY
			ts = get_timer (0);	/* get current time */
			while ((*fn->busy) (cookie)) {
				/* XXX - we should have a check in here somewhere to
				 * make sure we aren't busy forever... */

				CONFIG_FPGA_DELAY ();
				(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
				CONFIG_FPGA_DELAY ();
				(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

				if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
					puts ("** Timeout waiting for BUSY to clear.\n");
					(*fn->abort) (cookie);	/* abort the burn */
					return FPGA_FAIL;
				}
			}
#endif

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
			if (bytecount % (bsize / 40) == 0)
				putc ('.');		/* let them know we are alive */
#endif
		}

		CONFIG_FPGA_DELAY ();
		(*fn->cs) (false, true, cookie);	/* Deassert the chip select */
		(*fn->wr) (false, true, cookie);	/* Deassert the write pin */

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		putc ('\n');			/* terminate the dotted line */
#endif

		/* now check for done signal */
		ts = get_timer (0);		/* get current time */
		ret_val = FPGA_SUCCESS;
		while ((*fn->done) (cookie) == FPGA_FAIL) {
			/* XXX - we should have a check in here somewhere to
			 * make sure we aren't busy forever... */

			CONFIG_FPGA_DELAY ();
			(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
			CONFIG_FPGA_DELAY ();
			(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

			if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
				puts ("** Timeout waiting for DONE to clear.\n");
				(*fn->abort) (cookie);	/* abort the burn */
				ret_val = FPGA_FAIL;
				break;
			}
		}

		/*
		 * Run the post configuration function if there is one.
		 */
		if (*fn->post)
			(*fn->post) (cookie);

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		if (ret_val == FPGA_SUCCESS)
			puts ("Done.\n");
		else
			puts ("Fail.\n");
#endif

	} else {
		printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	}

	return ret_val;
}

static int spartan3_sp_dump(xilinx_desc *desc, const void *buf, size_t bsize)
{
	int ret_val = FPGA_FAIL;	/* assume the worst */
	xilinx_spartan3_slave_parallel_fns *fn = desc->iface_fns;

	if (fn) {
		unsigned char *data = (unsigned char *) buf;
		size_t bytecount = 0;
		int cookie = desc->cookie;	/* make a local copy */

		printf ("Starting Dump of FPGA Device %d...\n", cookie);

		(*fn->cs) (true, true, cookie); /* Assert chip select, commit */
		(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

		/* dump the data */
		while (bytecount < bsize) {
			/* XXX - do we check for an Ctrl-C press in here ??? */

			(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
			(*fn->clk) (true, true, cookie);	/* Assert the clock pin */
			(*fn->rdata) (&(data[bytecount++]), cookie);	/* read the data */
#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
			if (bytecount % (bsize / 40) == 0)
				putc ('.');		/* let them know we are alive */
#endif
		}

		(*fn->cs) (false, false, cookie);	/* Deassert the chip select */
		(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
		(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		putc ('\n');			/* terminate the dotted line */
#endif
		puts ("Done.\n");

		/* XXX - checksum the data? */
	} else {
		printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	}

	return ret_val;
}


/* ------------------------------------------------------------------------- */

static int spartan3_ss_load(xilinx_desc *desc, const void *buf, size_t bsize)
{
	int ret_val = FPGA_FAIL;	/* assume the worst */
	xilinx_spartan3_slave_serial_fns *fn = desc->iface_fns;
	int i;
	unsigned char val;

	PRINTF ("%s: start with interface functions @ 0x%p\n",
			__FUNCTION__, fn);

	if (fn) {
		size_t bytecount = 0;
		unsigned char *data = (unsigned char *) buf;
		int cookie = desc->cookie;	/* make a local copy */
		unsigned long ts;		/* timestamp */

		PRINTF ("%s: Function Table:\n"
				"ptr:\t0x%p\n"
				"struct: 0x%p\n"
				"pgm:\t0x%p\n"
				"init:\t0x%p\n"
				"clk:\t0x%p\n"
				"wr:\t0x%p\n"
				"done:\t0x%p\n\n",
				__FUNCTION__, &fn, fn, fn->pgm, fn->init,
				fn->clk, fn->wr, fn->done);
#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		printf ("Loading FPGA Device %d...\n", cookie);
#endif

		/*
		 * Run the pre configuration function if there is one.
		 */
		if (*fn->pre) {
			(*fn->pre) (cookie);
		}

		/* Establish the initial state */
		(*fn->pgm) (true, true, cookie);	/* Assert the program, commit */

		/* Wait for INIT state (init low)                            */
		ts = get_timer (0);		/* get current time */
		do {
			CONFIG_FPGA_DELAY ();
			if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
				puts ("** Timeout waiting for INIT to start.\n");
				if (*fn->abort)
					(*fn->abort) (cookie);
				return FPGA_FAIL;
			}
		} while (!(*fn->init) (cookie));

		/* Get ready for the burn */
		CONFIG_FPGA_DELAY ();
		(*fn->pgm) (false, true, cookie);	/* Deassert the program, commit */

		ts = get_timer (0);		/* get current time */
		/* Now wait for INIT to go high */
		do {
			CONFIG_FPGA_DELAY ();
			if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
				puts ("** Timeout waiting for INIT to clear.\n");
				if (*fn->abort)
					(*fn->abort) (cookie);
				return FPGA_FAIL;
			}
		} while ((*fn->init) (cookie));

		/* Load the data */
		if(*fn->bwr)
			(*fn->bwr) (data, bsize, true, cookie);
		else {
			while (bytecount < bsize) {

				/* Xilinx detects an error if INIT goes low (active)
				   while DONE is low (inactive) */
				if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
					puts ("** CRC error during FPGA load.\n");
					if (*fn->abort)
						(*fn->abort) (cookie);
					return (FPGA_FAIL);
				}
				val = data [bytecount ++];
				i = 8;
				do {
					/* Deassert the clock */
					(*fn->clk) (false, true, cookie);
					CONFIG_FPGA_DELAY ();
					/* Write data */
					(*fn->wr) ((val & 0x80), true, cookie);
					CONFIG_FPGA_DELAY ();
					/* Assert the clock */
					(*fn->clk) (true, true, cookie);
					CONFIG_FPGA_DELAY ();
					val <<= 1;
					i --;
				} while (i > 0);

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
				if (bytecount % (bsize / 40) == 0)
					putc ('.');		/* let them know we are alive */
#endif
			}
		}

		CONFIG_FPGA_DELAY ();

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		putc ('\n');			/* terminate the dotted line */
#endif

		/* now check for done signal */
		ts = get_timer (0);		/* get current time */
		ret_val = FPGA_SUCCESS;
		(*fn->wr) (true, true, cookie);

		while (! (*fn->done) (cookie)) {
			/* XXX - we should have a check in here somewhere to
			 * make sure we aren't busy forever... */

			CONFIG_FPGA_DELAY ();
			(*fn->clk) (false, true, cookie);	/* Deassert the clock pin */
			CONFIG_FPGA_DELAY ();
			(*fn->clk) (true, true, cookie);	/* Assert the clock pin */

			putc ('*');

			if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) {	/* check the time */
				puts ("** Timeout waiting for DONE to clear.\n");
				ret_val = FPGA_FAIL;
				break;
			}
		}
		putc ('\n');			/* terminate the dotted line */

		/*
		 * Run the post configuration function if there is one.
		 */
		if (*fn->post)
			(*fn->post) (cookie);

#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
		if (ret_val == FPGA_SUCCESS)
			puts ("Done.\n");
		else
			puts ("Fail.\n");
#endif

	} else {
		printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	}

	return ret_val;
}

static int spartan3_ss_dump(xilinx_desc *desc, const void *buf, size_t bsize)
{
	/* Readback is only available through the Slave Parallel and         */
	/* boundary-scan interfaces.                                         */
	printf ("%s: Slave Serial Dumping is unavailable\n",
			__FUNCTION__);
	return FPGA_FAIL;
}

struct xilinx_fpga_op spartan3_op = {
	.load = spartan3_load,
	.dump = spartan3_dump,
	.info = spartan3_info,
};
Commit	Line	Data
875c7893 WD	1	/*
	2	* (C) Copyright 2002
	3	* Rich Ireland, Enterasys Networks, [email protected].
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
875c7893 WD	6	*/
	7
	8	/*
	9	* Configuration support for Xilinx Spartan3 devices. Based
	10	* on spartan2.c (Rich Ireland, [email protected]).
	11	*/
716c1dcb	12
875c7893 WD	13	#include <common.h> /* core U-Boot definitions */
	14	#include <spartan3.h> /* Spartan-II device family */
	15
875c7893 WD	16	/* Define FPGA_DEBUG to get debug printf's */
	17	#ifdef FPGA_DEBUG
	18	#define PRINTF(fmt,args...) printf (fmt ,##args)
	19	#else
	20	#define PRINTF(fmt,args...)
	21	#endif
	22
6d0f6bcf	23	#undef CONFIG_SYS_FPGA_CHECK_BUSY
875c7893 WD	24
	25	/* Note: The assumption is that we cannot possibly run fast enough to
	26	* overrun the device (the Slave Parallel mode can free run at 50MHz).
	27	* If there is a need to operate slower, define CONFIG_FPGA_DELAY in
	28	* the board config file to slow things down.
	29	*/
	30	#ifndef CONFIG_FPGA_DELAY
	31	#define CONFIG_FPGA_DELAY()
	32	#endif
	33
6d0f6bcf JCPV	34	#ifndef CONFIG_SYS_FPGA_WAIT
6d0f6bcf JCPV	35	#define CONFIG_SYS_FPGA_WAIT CONFIG_SYS_HZ/100 /* 10 ms */
875c7893 WD	36	#endif
875c7893 WD	37
f8c1be98 MS	38	static int spartan3_sp_load(xilinx_desc desc, const void buf, size_t bsize);
	39	static int spartan3_sp_dump(xilinx_desc desc, const void buf, size_t bsize);
	40	/* static int spartan3_sp_info(xilinx_desc desc ); /
875c7893	41
f8c1be98 MS	42	static int spartan3_ss_load(xilinx_desc desc, const void buf, size_t bsize);
	43	static int spartan3_ss_dump(xilinx_desc desc, const void buf, size_t bsize);
	44	/* static int spartan3_ss_info(xilinx_desc desc); /
875c7893 WD	45
	46	/* ------------------------------------------------------------------------- */
	47	/* Spartan-II Generic Implementation */
7a78bd26 MS	48	static int spartan3_load(xilinx_desc desc, const void buf, size_t bsize,
7a78bd26 MS	49	bitstream_type bstype)
875c7893 WD	50	{
	51	int ret_val = FPGA_FAIL;
	52
	53	switch (desc->iface) {
	54	case slave_serial:
	55	PRINTF ("%s: Launching Slave Serial Load\n", __FUNCTION__);
2a6e3869	56	ret_val = spartan3_ss_load(desc, buf, bsize);
875c7893 WD	57	break;
	58
	59	case slave_parallel:
	60	PRINTF ("%s: Launching Slave Parallel Load\n", __FUNCTION__);
2a6e3869	61	ret_val = spartan3_sp_load(desc, buf, bsize);
875c7893 WD	62	break;
	63
	64	default:
	65	printf ("%s: Unsupported interface type, %d\n",
	66	__FUNCTION__, desc->iface);
	67	}
	68
	69	return ret_val;
	70	}
	71
14cfc4f3	72	static int spartan3_dump(xilinx_desc desc, const void buf, size_t bsize)
875c7893 WD	73	{
	74	int ret_val = FPGA_FAIL;
	75
	76	switch (desc->iface) {
	77	case slave_serial:
	78	PRINTF ("%s: Launching Slave Serial Dump\n", __FUNCTION__);
2a6e3869	79	ret_val = spartan3_ss_dump(desc, buf, bsize);
875c7893 WD	80	break;
	81
	82	case slave_parallel:
	83	PRINTF ("%s: Launching Slave Parallel Dump\n", __FUNCTION__);
2a6e3869	84	ret_val = spartan3_sp_dump(desc, buf, bsize);
875c7893 WD	85	break;
	86
	87	default:
	88	printf ("%s: Unsupported interface type, %d\n",
	89	__FUNCTION__, desc->iface);
	90	}
	91
	92	return ret_val;
	93	}
	94
14cfc4f3	95	static int spartan3_info(xilinx_desc *desc)
875c7893 WD	96	{
	97	return FPGA_SUCCESS;
	98	}
	99
	100
875c7893 WD	101	/* ------------------------------------------------------------------------- */
	102	/* Spartan-II Slave Parallel Generic Implementation */
	103
f8c1be98	104	static int spartan3_sp_load(xilinx_desc desc, const void buf, size_t bsize)
875c7893 WD	105	{
875c7893 WD	106	int ret_val = FPGA_FAIL; /* assume the worst */
2a6e3869	107	xilinx_spartan3_slave_parallel_fns *fn = desc->iface_fns;
875c7893 WD	108
	109	PRINTF ("%s: start with interface functions @ 0x%p\n",
	110	__FUNCTION__, fn);
	111
	112	if (fn) {
	113	size_t bytecount = 0;
	114	unsigned char data = (unsigned char ) buf;
	115	int cookie = desc->cookie; /* make a local copy */
	116	unsigned long ts; /* timestamp */
	117
	118	PRINTF ("%s: Function Table:\n"
	119	"ptr:\t0x%p\n"
	120	"struct: 0x%p\n"
	121	"pre: 0x%p\n"
	122	"pgm:\t0x%p\n"
	123	"init:\t0x%p\n"
	124	"err:\t0x%p\n"
	125	"clk:\t0x%p\n"
	126	"cs:\t0x%p\n"
	127	"wr:\t0x%p\n"
	128	"read data:\t0x%p\n"
	129	"write data:\t0x%p\n"
	130	"busy:\t0x%p\n"
	131	"abort:\t0x%p\n",
	132	"post:\t0x%p\n\n",
	133	__FUNCTION__, &fn, fn, fn->pre, fn->pgm, fn->init, fn->err,
	134	fn->clk, fn->cs, fn->wr, fn->rdata, fn->wdata, fn->busy,
	135	fn->abort, fn->post);
	136
	137	/*
	138	* This code is designed to emulate the "Express Style"
	139	* Continuous Data Loading in Slave Parallel Mode for
	140	* the Spartan-II Family.
	141	*/
6d0f6bcf	142	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	143	printf ("Loading FPGA Device %d...\n", cookie);
	144	#endif
	145	/*
	146	* Run the pre configuration function if there is one.
	147	*/
	148	if (*fn->pre) {
	149	(*fn->pre) (cookie);
	150	}
	151
	152	/* Establish the initial state */
472d5460	153	(fn->pgm) (true, true, cookie); / Assert the program, commit */
875c7893 WD	154
	155	/* Get ready for the burn */
	156	CONFIG_FPGA_DELAY ();
472d5460	157	(fn->pgm) (false, true, cookie); / Deassert the program, commit */
875c7893 WD	158
	159	ts = get_timer (0); /* get current time */
	160	/* Now wait for INIT and BUSY to go high */
	161	do {
	162	CONFIG_FPGA_DELAY ();
6d0f6bcf	163	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893 WD	164	puts ("** Timeout waiting for INIT to clear.\n");
	165	(fn->abort) (cookie); / abort the burn */
	166	return FPGA_FAIL;
	167	}
	168	} while ((fn->init) (cookie) && (fn->busy) (cookie));
	169
472d5460 YS	170	(fn->wr) (true, true, cookie); / Assert write, commit */
	171	(fn->cs) (true, true, cookie); / Assert chip select, commit */
	172	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893 WD	173
	174	/* Load the data */
	175	while (bytecount < bsize) {
	176	/* XXX - do we check for an Ctrl-C press in here ??? */
	177	/* XXX - Check the error bit? */
	178
472d5460	179	(fn->wdata) (data[bytecount++], true, cookie); / write the data */
875c7893	180	CONFIG_FPGA_DELAY ();
472d5460	181	(fn->clk) (false, true, cookie); / Deassert the clock pin */
875c7893	182	CONFIG_FPGA_DELAY ();
472d5460	183	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893	184
6d0f6bcf	185	#ifdef CONFIG_SYS_FPGA_CHECK_BUSY
875c7893 WD	186	ts = get_timer (0); /* get current time */
	187	while ((*fn->busy) (cookie)) {
	188	/* XXX - we should have a check in here somewhere to
	189	* make sure we aren't busy forever... */
	190
	191	CONFIG_FPGA_DELAY ();
472d5460	192	(fn->clk) (false, true, cookie); / Deassert the clock pin */
875c7893	193	CONFIG_FPGA_DELAY ();
472d5460	194	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893	195
6d0f6bcf	196	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893 WD	197	puts ("** Timeout waiting for BUSY to clear.\n");
	198	(fn->abort) (cookie); / abort the burn */
	199	return FPGA_FAIL;
	200	}
	201	}
	202	#endif
	203
6d0f6bcf	204	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	205	if (bytecount % (bsize / 40) == 0)
	206	putc ('.'); /* let them know we are alive */
	207	#endif
	208	}
	209
	210	CONFIG_FPGA_DELAY ();
472d5460 YS	211	(fn->cs) (false, true, cookie); / Deassert the chip select */
472d5460 YS	212	(fn->wr) (false, true, cookie); / Deassert the write pin */
875c7893	213
6d0f6bcf	214	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	215	putc ('\n'); /* terminate the dotted line */
	216	#endif
	217
	218	/* now check for done signal */
	219	ts = get_timer (0); /* get current time */
	220	ret_val = FPGA_SUCCESS;
	221	while ((*fn->done) (cookie) == FPGA_FAIL) {
	222	/* XXX - we should have a check in here somewhere to
	223	* make sure we aren't busy forever... */
	224
	225	CONFIG_FPGA_DELAY ();
472d5460	226	(fn->clk) (false, true, cookie); / Deassert the clock pin */
875c7893	227	CONFIG_FPGA_DELAY ();
472d5460	228	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893	229
6d0f6bcf	230	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893 WD	231	puts ("** Timeout waiting for DONE to clear.\n");
	232	(fn->abort) (cookie); / abort the burn */
	233	ret_val = FPGA_FAIL;
	234	break;
	235	}
	236	}
	237
875c7893 WD	238	/*
	239	* Run the post configuration function if there is one.
	240	*/
670cbde8	241	if (*fn->post)
875c7893	242	(*fn->post) (cookie);
875c7893	243
6d0f6bcf	244	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
670cbde8 MF	245	if (ret_val == FPGA_SUCCESS)
	246	puts ("Done.\n");
	247	else
875c7893 WD	248	puts ("Fail.\n");
875c7893 WD	249	#endif
875c7893 WD	250
	251	} else {
	252	printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	253	}
	254
	255	return ret_val;
	256	}
	257
f8c1be98	258	static int spartan3_sp_dump(xilinx_desc desc, const void buf, size_t bsize)
875c7893 WD	259	{
875c7893 WD	260	int ret_val = FPGA_FAIL; /* assume the worst */
2a6e3869	261	xilinx_spartan3_slave_parallel_fns *fn = desc->iface_fns;
875c7893 WD	262
	263	if (fn) {
	264	unsigned char data = (unsigned char ) buf;
	265	size_t bytecount = 0;
	266	int cookie = desc->cookie; /* make a local copy */
	267
	268	printf ("Starting Dump of FPGA Device %d...\n", cookie);
	269
472d5460 YS	270	(fn->cs) (true, true, cookie); / Assert chip select, commit */
472d5460 YS	271	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893 WD	272
	273	/* dump the data */
	274	while (bytecount < bsize) {
	275	/* XXX - do we check for an Ctrl-C press in here ??? */
	276
472d5460 YS	277	(fn->clk) (false, true, cookie); / Deassert the clock pin */
472d5460 YS	278	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893	279	(fn->rdata) (&(data[bytecount++]), cookie); / read the data */
6d0f6bcf	280	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	281	if (bytecount % (bsize / 40) == 0)
	282	putc ('.'); /* let them know we are alive */
	283	#endif
	284	}
	285
472d5460 YS	286	(fn->cs) (false, false, cookie); / Deassert the chip select */
	287	(fn->clk) (false, true, cookie); / Deassert the clock pin */
	288	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893	289
6d0f6bcf	290	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	291	putc ('\n'); /* terminate the dotted line */
	292	#endif
	293	puts ("Done.\n");
	294
	295	/* XXX - checksum the data? */
	296	} else {
	297	printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	298	}
	299
	300	return ret_val;
	301	}
	302
	303
875c7893 WD	304	/* ------------------------------------------------------------------------- */
875c7893 WD	305
f8c1be98	306	static int spartan3_ss_load(xilinx_desc desc, const void buf, size_t bsize)
875c7893 WD	307	{
875c7893 WD	308	int ret_val = FPGA_FAIL; /* assume the worst */
2a6e3869	309	xilinx_spartan3_slave_serial_fns *fn = desc->iface_fns;
875c7893	310	int i;
437fc732	311	unsigned char val;
875c7893 WD	312
	313	PRINTF ("%s: start with interface functions @ 0x%p\n",
	314	__FUNCTION__, fn);
	315
	316	if (fn) {
	317	size_t bytecount = 0;
	318	unsigned char data = (unsigned char ) buf;
	319	int cookie = desc->cookie; /* make a local copy */
	320	unsigned long ts; /* timestamp */
	321
	322	PRINTF ("%s: Function Table:\n"
	323	"ptr:\t0x%p\n"
	324	"struct: 0x%p\n"
	325	"pgm:\t0x%p\n"
	326	"init:\t0x%p\n"
	327	"clk:\t0x%p\n"
	328	"wr:\t0x%p\n"
	329	"done:\t0x%p\n\n",
	330	__FUNCTION__, &fn, fn, fn->pgm, fn->init,
	331	fn->clk, fn->wr, fn->done);
6d0f6bcf	332	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	333	printf ("Loading FPGA Device %d...\n", cookie);
	334	#endif
	335
	336	/*
	337	* Run the pre configuration function if there is one.
	338	*/
	339	if (*fn->pre) {
	340	(*fn->pre) (cookie);
	341	}
	342
	343	/* Establish the initial state */
472d5460	344	(fn->pgm) (true, true, cookie); / Assert the program, commit */
875c7893 WD	345
	346	/* Wait for INIT state (init low) */
	347	ts = get_timer (0); /* get current time */
	348	do {
	349	CONFIG_FPGA_DELAY ();
6d0f6bcf	350	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893	351	puts ("** Timeout waiting for INIT to start.\n");
b0bc8b70 WW	352	if (*fn->abort)
b0bc8b70 WW	353	(*fn->abort) (cookie);
875c7893 WD	354	return FPGA_FAIL;
	355	}
	356	} while (!(*fn->init) (cookie));
	357
	358	/* Get ready for the burn */
	359	CONFIG_FPGA_DELAY ();
472d5460	360	(fn->pgm) (false, true, cookie); / Deassert the program, commit */
875c7893 WD	361
	362	ts = get_timer (0); /* get current time */
	363	/* Now wait for INIT to go high */
	364	do {
	365	CONFIG_FPGA_DELAY ();
6d0f6bcf	366	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893	367	puts ("** Timeout waiting for INIT to clear.\n");
b0bc8b70 WW	368	if (*fn->abort)
b0bc8b70 WW	369	(*fn->abort) (cookie);
875c7893 WD	370	return FPGA_FAIL;
	371	}
	372	} while ((*fn->init) (cookie));
	373
	374	/* Load the data */
89083346	375	if(*fn->bwr)
472d5460	376	(*fn->bwr) (data, bsize, true, cookie);
89083346 WW	377	else {
	378	while (bytecount < bsize) {
	379
	380	/* Xilinx detects an error if INIT goes low (active)
	381	while DONE is low (inactive) */
	382	if ((fn->done) (cookie) == 0 && (fn->init) (cookie)) {
	383	puts ("** CRC error during FPGA load.\n");
b0bc8b70 WW	384	if (*fn->abort)
b0bc8b70 WW	385	(*fn->abort) (cookie);
89083346 WW	386	return (FPGA_FAIL);
	387	}
	388	val = data [bytecount ++];
	389	i = 8;
	390	do {
	391	/* Deassert the clock */
472d5460	392	(*fn->clk) (false, true, cookie);
89083346 WW	393	CONFIG_FPGA_DELAY ();
89083346 WW	394	/* Write data */
472d5460	395	(*fn->wr) ((val & 0x80), true, cookie);
89083346 WW	396	CONFIG_FPGA_DELAY ();
89083346 WW	397	/* Assert the clock */
472d5460	398	(*fn->clk) (true, true, cookie);
89083346 WW	399	CONFIG_FPGA_DELAY ();
	400	val <<= 1;
	401	i --;
	402	} while (i > 0);
875c7893	403
6d0f6bcf	404	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
89083346 WW	405	if (bytecount % (bsize / 40) == 0)
89083346 WW	406	putc ('.'); /* let them know we are alive */
875c7893	407	#endif
89083346	408	}
875c7893 WD	409	}
	410
	411	CONFIG_FPGA_DELAY ();
	412
6d0f6bcf	413	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
875c7893 WD	414	putc ('\n'); /* terminate the dotted line */
	415	#endif
	416
	417	/* now check for done signal */
	418	ts = get_timer (0); /* get current time */
	419	ret_val = FPGA_SUCCESS;
472d5460	420	(*fn->wr) (true, true, cookie);
875c7893 WD	421
	422	while (! (*fn->done) (cookie)) {
	423	/* XXX - we should have a check in here somewhere to
	424	* make sure we aren't busy forever... */
	425
	426	CONFIG_FPGA_DELAY ();
472d5460	427	(fn->clk) (false, true, cookie); / Deassert the clock pin */
875c7893	428	CONFIG_FPGA_DELAY ();
472d5460	429	(fn->clk) (true, true, cookie); / Assert the clock pin */
875c7893 WD	430
	431	putc ('*');
	432
6d0f6bcf	433	if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
875c7893 WD	434	puts ("** Timeout waiting for DONE to clear.\n");
	435	ret_val = FPGA_FAIL;
	436	break;
	437	}
	438	}
	439	putc ('\n'); /* terminate the dotted line */
	440
21d39d59 MF	441	/*
	442	* Run the post configuration function if there is one.
	443	*/
670cbde8	444	if (*fn->post)
21d39d59	445	(*fn->post) (cookie);
21d39d59	446
6d0f6bcf	447	#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
670cbde8	448	if (ret_val == FPGA_SUCCESS)
875c7893	449	puts ("Done.\n");
670cbde8	450	else
875c7893	451	puts ("Fail.\n");
875c7893 WD	452	#endif
	453
	454	} else {
	455	printf ("%s: NULL Interface function table!\n", __FUNCTION__);
	456	}
	457
	458	return ret_val;
	459	}
	460
f8c1be98	461	static int spartan3_ss_dump(xilinx_desc desc, const void buf, size_t bsize)
875c7893 WD	462	{
	463	/* Readback is only available through the Slave Parallel and */
	464	/* boundary-scan interfaces. */
	465	printf ("%s: Slave Serial Dumping is unavailable\n",
	466	__FUNCTION__);
	467	return FPGA_FAIL;
	468	}
14cfc4f3 MS	469
	470	struct xilinx_fpga_op spartan3_op = {
	471	.load = spartan3_load,
	472	.dump = spartan3_dump,
	473	.info = spartan3_info,
	474	};