3 * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <common.h> /* core U-Boot definitions */
26 #include <spartan2.h> /* Spartan-II device family */
28 /* Define FPGA_DEBUG to get debug printf's */
30 #define PRINTF(fmt,args...) printf (fmt ,##args)
32 #define PRINTF(fmt,args...)
35 #undef CFG_FPGA_CHECK_BUSY
36 #undef CFG_FPGA_PROG_FEEDBACK
38 /* Note: The assumption is that we cannot possibly run fast enough to
39 * overrun the device (the Slave Parallel mode can free run at 50MHz).
40 * If there is a need to operate slower, define CONFIG_FPGA_DELAY in
41 * the board config file to slow things down.
43 #ifndef CONFIG_FPGA_DELAY
44 #define CONFIG_FPGA_DELAY()
48 #define CFG_FPGA_WAIT CFG_HZ/100 /* 10 ms */
51 static int Spartan2_sp_load( Xilinx_desc *desc, void *buf, size_t bsize );
52 static int Spartan2_sp_dump( Xilinx_desc *desc, void *buf, size_t bsize );
53 /* static int Spartan2_sp_info( Xilinx_desc *desc ); */
54 static int Spartan2_sp_reloc( Xilinx_desc *desc, ulong reloc_offset );
56 static int Spartan2_ss_load( Xilinx_desc *desc, void *buf, size_t bsize );
57 static int Spartan2_ss_dump( Xilinx_desc *desc, void *buf, size_t bsize );
58 /* static int Spartan2_ss_info( Xilinx_desc *desc ); */
59 static int Spartan2_ss_reloc( Xilinx_desc *desc, ulong reloc_offset );
61 /* ------------------------------------------------------------------------- */
62 /* Spartan-II Generic Implementation */
63 int Spartan2_load (Xilinx_desc * desc, void *buf, size_t bsize)
65 int ret_val = FPGA_FAIL;
67 switch (desc->iface) {
69 PRINTF ("%s: Launching Slave Serial Load\n", __FUNCTION__);
70 ret_val = Spartan2_ss_load (desc, buf, bsize);
74 PRINTF ("%s: Launching Slave Parallel Load\n", __FUNCTION__);
75 ret_val = Spartan2_sp_load (desc, buf, bsize);
79 printf ("%s: Unsupported interface type, %d\n",
80 __FUNCTION__, desc->iface);
86 int Spartan2_dump (Xilinx_desc * desc, void *buf, size_t bsize)
88 int ret_val = FPGA_FAIL;
90 switch (desc->iface) {
92 PRINTF ("%s: Launching Slave Serial Dump\n", __FUNCTION__);
93 ret_val = Spartan2_ss_dump (desc, buf, bsize);
97 PRINTF ("%s: Launching Slave Parallel Dump\n", __FUNCTION__);
98 ret_val = Spartan2_sp_dump (desc, buf, bsize);
102 printf ("%s: Unsupported interface type, %d\n",
103 __FUNCTION__, desc->iface);
109 int Spartan2_info( Xilinx_desc *desc )
115 int Spartan2_reloc (Xilinx_desc * desc, ulong reloc_offset)
117 int ret_val = FPGA_FAIL; /* assume a failure */
119 if (desc->family != Xilinx_Spartan2) {
120 printf ("%s: Unsupported family type, %d\n",
121 __FUNCTION__, desc->family);
124 switch (desc->iface) {
126 ret_val = Spartan2_ss_reloc (desc, reloc_offset);
130 ret_val = Spartan2_sp_reloc (desc, reloc_offset);
134 printf ("%s: Unsupported interface type, %d\n",
135 __FUNCTION__, desc->iface);
142 /* ------------------------------------------------------------------------- */
143 /* Spartan-II Slave Parallel Generic Implementation */
145 static int Spartan2_sp_load (Xilinx_desc * desc, void *buf, size_t bsize)
147 int ret_val = FPGA_FAIL; /* assume the worst */
148 Xilinx_Spartan2_Slave_Parallel_fns *fn = desc->iface_fns;
150 PRINTF ("%s: start with interface functions @ 0x%p\n",
154 size_t bytecount = 0;
155 unsigned char *data = (unsigned char *) buf;
156 int cookie = desc->cookie; /* make a local copy */
157 unsigned long ts; /* timestamp */
159 PRINTF ("%s: Function Table:\n"
170 "write data:\t0x%p\n"
174 __FUNCTION__, &fn, fn, fn->pre, fn->pgm, fn->init, fn->err,
175 fn->clk, fn->cs, fn->wr, fn->rdata, fn->wdata, fn->busy,
176 fn->abort, fn->post);
179 * This code is designed to emulate the "Express Style"
180 * Continuous Data Loading in Slave Parallel Mode for
181 * the Spartan-II Family.
183 #ifdef CFG_FPGA_PROG_FEEDBACK
184 printf ("Loading FPGA Device %d...\n", cookie);
187 * Run the pre configuration function if there is one.
193 /* Establish the initial state */
194 (*fn->pgm) (TRUE, TRUE, cookie); /* Assert the program, commit */
196 /* Get ready for the burn */
197 CONFIG_FPGA_DELAY ();
198 (*fn->pgm) (FALSE, TRUE, cookie); /* Deassert the program, commit */
200 ts = get_timer (0); /* get current time */
201 /* Now wait for INIT and BUSY to go high */
203 CONFIG_FPGA_DELAY ();
204 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
205 puts ("** Timeout waiting for INIT to clear.\n");
206 (*fn->abort) (cookie); /* abort the burn */
209 } while ((*fn->init) (cookie) && (*fn->busy) (cookie));
211 (*fn->wr) (TRUE, TRUE, cookie); /* Assert write, commit */
212 (*fn->cs) (TRUE, TRUE, cookie); /* Assert chip select, commit */
213 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
216 while (bytecount < bsize) {
217 /* XXX - do we check for an Ctrl-C press in here ??? */
218 /* XXX - Check the error bit? */
220 (*fn->wdata) (data[bytecount++], TRUE, cookie); /* write the data */
221 CONFIG_FPGA_DELAY ();
222 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
223 CONFIG_FPGA_DELAY ();
224 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
226 #ifdef CFG_FPGA_CHECK_BUSY
227 ts = get_timer (0); /* get current time */
228 while ((*fn->busy) (cookie)) {
229 /* XXX - we should have a check in here somewhere to
230 * make sure we aren't busy forever... */
232 CONFIG_FPGA_DELAY ();
233 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
234 CONFIG_FPGA_DELAY ();
235 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
237 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
238 puts ("** Timeout waiting for BUSY to clear.\n");
239 (*fn->abort) (cookie); /* abort the burn */
245 #ifdef CFG_FPGA_PROG_FEEDBACK
246 if (bytecount % (bsize / 40) == 0)
247 putc ('.'); /* let them know we are alive */
251 CONFIG_FPGA_DELAY ();
252 (*fn->cs) (FALSE, TRUE, cookie); /* Deassert the chip select */
253 (*fn->wr) (FALSE, TRUE, cookie); /* Deassert the write pin */
255 #ifdef CFG_FPGA_PROG_FEEDBACK
256 putc ('\n'); /* terminate the dotted line */
259 /* now check for done signal */
260 ts = get_timer (0); /* get current time */
261 ret_val = FPGA_SUCCESS;
262 while ((*fn->done) (cookie) == FPGA_FAIL) {
263 /* XXX - we should have a check in here somewhere to
264 * make sure we aren't busy forever... */
266 CONFIG_FPGA_DELAY ();
267 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
268 CONFIG_FPGA_DELAY ();
269 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
271 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
272 puts ("** Timeout waiting for DONE to clear.\n");
273 (*fn->abort) (cookie); /* abort the burn */
279 if (ret_val == FPGA_SUCCESS) {
280 #ifdef CFG_FPGA_PROG_FEEDBACK
285 * Run the post configuration function if there is one.
288 (*fn->post) (cookie);
292 #ifdef CFG_FPGA_PROG_FEEDBACK
298 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
304 static int Spartan2_sp_dump (Xilinx_desc * desc, void *buf, size_t bsize)
306 int ret_val = FPGA_FAIL; /* assume the worst */
307 Xilinx_Spartan2_Slave_Parallel_fns *fn = desc->iface_fns;
310 unsigned char *data = (unsigned char *) buf;
311 size_t bytecount = 0;
312 int cookie = desc->cookie; /* make a local copy */
314 printf ("Starting Dump of FPGA Device %d...\n", cookie);
316 (*fn->cs) (TRUE, TRUE, cookie); /* Assert chip select, commit */
317 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
320 while (bytecount < bsize) {
321 /* XXX - do we check for an Ctrl-C press in here ??? */
323 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
324 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
325 (*fn->rdata) (&(data[bytecount++]), cookie); /* read the data */
326 #ifdef CFG_FPGA_PROG_FEEDBACK
327 if (bytecount % (bsize / 40) == 0)
328 putc ('.'); /* let them know we are alive */
332 (*fn->cs) (FALSE, FALSE, cookie); /* Deassert the chip select */
333 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
334 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
336 #ifdef CFG_FPGA_PROG_FEEDBACK
337 putc ('\n'); /* terminate the dotted line */
341 /* XXX - checksum the data? */
343 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
350 static int Spartan2_sp_reloc (Xilinx_desc * desc, ulong reloc_offset)
352 int ret_val = FPGA_FAIL; /* assume the worst */
353 Xilinx_Spartan2_Slave_Parallel_fns *fn_r, *fn =
354 (Xilinx_Spartan2_Slave_Parallel_fns *) (desc->iface_fns);
359 /* Get the relocated table address */
360 addr = (ulong) fn + reloc_offset;
361 fn_r = (Xilinx_Spartan2_Slave_Parallel_fns *) addr;
363 if (!fn_r->relocated) {
365 if (memcmp (fn_r, fn,
366 sizeof (Xilinx_Spartan2_Slave_Parallel_fns))
368 /* good copy of the table, fix the descriptor pointer */
369 desc->iface_fns = fn_r;
371 PRINTF ("%s: Invalid function table at 0x%p\n",
376 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
379 addr = (ulong) (fn->pre) + reloc_offset;
380 fn_r->pre = (Xilinx_pre_fn) addr;
382 addr = (ulong) (fn->pgm) + reloc_offset;
383 fn_r->pgm = (Xilinx_pgm_fn) addr;
385 addr = (ulong) (fn->init) + reloc_offset;
386 fn_r->init = (Xilinx_init_fn) addr;
388 addr = (ulong) (fn->done) + reloc_offset;
389 fn_r->done = (Xilinx_done_fn) addr;
391 addr = (ulong) (fn->clk) + reloc_offset;
392 fn_r->clk = (Xilinx_clk_fn) addr;
394 addr = (ulong) (fn->err) + reloc_offset;
395 fn_r->err = (Xilinx_err_fn) addr;
397 addr = (ulong) (fn->cs) + reloc_offset;
398 fn_r->cs = (Xilinx_cs_fn) addr;
400 addr = (ulong) (fn->wr) + reloc_offset;
401 fn_r->wr = (Xilinx_wr_fn) addr;
403 addr = (ulong) (fn->rdata) + reloc_offset;
404 fn_r->rdata = (Xilinx_rdata_fn) addr;
406 addr = (ulong) (fn->wdata) + reloc_offset;
407 fn_r->wdata = (Xilinx_wdata_fn) addr;
409 addr = (ulong) (fn->busy) + reloc_offset;
410 fn_r->busy = (Xilinx_busy_fn) addr;
412 addr = (ulong) (fn->abort) + reloc_offset;
413 fn_r->abort = (Xilinx_abort_fn) addr;
415 addr = (ulong) (fn->post) + reloc_offset;
416 fn_r->post = (Xilinx_post_fn) addr;
418 fn_r->relocated = TRUE;
421 /* this table has already been moved */
422 /* XXX - should check to see if the descriptor is correct */
423 desc->iface_fns = fn_r;
426 ret_val = FPGA_SUCCESS;
428 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
435 /* ------------------------------------------------------------------------- */
437 static int Spartan2_ss_load (Xilinx_desc * desc, void *buf, size_t bsize)
439 int ret_val = FPGA_FAIL; /* assume the worst */
440 Xilinx_Spartan2_Slave_Serial_fns *fn = desc->iface_fns;
444 PRINTF ("%s: start with interface functions @ 0x%p\n",
448 size_t bytecount = 0;
449 unsigned char *data = (unsigned char *) buf;
450 int cookie = desc->cookie; /* make a local copy */
451 unsigned long ts; /* timestamp */
453 PRINTF ("%s: Function Table:\n"
461 __FUNCTION__, &fn, fn, fn->pgm, fn->init,
462 fn->clk, fn->wr, fn->done);
463 #ifdef CFG_FPGA_PROG_FEEDBACK
464 printf ("Loading FPGA Device %d...\n", cookie);
468 * Run the pre configuration function if there is one.
474 /* Establish the initial state */
475 (*fn->pgm) (TRUE, TRUE, cookie); /* Assert the program, commit */
477 /* Wait for INIT state (init low) */
478 ts = get_timer (0); /* get current time */
480 CONFIG_FPGA_DELAY ();
481 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
482 puts ("** Timeout waiting for INIT to start.\n");
485 } while (!(*fn->init) (cookie));
487 /* Get ready for the burn */
488 CONFIG_FPGA_DELAY ();
489 (*fn->pgm) (FALSE, TRUE, cookie); /* Deassert the program, commit */
491 ts = get_timer (0); /* get current time */
492 /* Now wait for INIT to go high */
494 CONFIG_FPGA_DELAY ();
495 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
496 puts ("** Timeout waiting for INIT to clear.\n");
499 } while ((*fn->init) (cookie));
502 while (bytecount < bsize) {
504 /* Xilinx detects an error if INIT goes low (active)
505 while DONE is low (inactive) */
506 if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
507 puts ("** CRC error during FPGA load.\n");
510 val = data [bytecount ++];
513 /* Deassert the clock */
514 (*fn->clk) (FALSE, TRUE, cookie);
515 CONFIG_FPGA_DELAY ();
517 (*fn->wr) ((val & 0x80), TRUE, cookie);
518 CONFIG_FPGA_DELAY ();
519 /* Assert the clock */
520 (*fn->clk) (TRUE, TRUE, cookie);
521 CONFIG_FPGA_DELAY ();
526 #ifdef CFG_FPGA_PROG_FEEDBACK
527 if (bytecount % (bsize / 40) == 0)
528 putc ('.'); /* let them know we are alive */
532 CONFIG_FPGA_DELAY ();
534 #ifdef CFG_FPGA_PROG_FEEDBACK
535 putc ('\n'); /* terminate the dotted line */
538 /* now check for done signal */
539 ts = get_timer (0); /* get current time */
540 ret_val = FPGA_SUCCESS;
541 (*fn->wr) (TRUE, TRUE, cookie);
543 while (! (*fn->done) (cookie)) {
544 /* XXX - we should have a check in here somewhere to
545 * make sure we aren't busy forever... */
547 CONFIG_FPGA_DELAY ();
548 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
549 CONFIG_FPGA_DELAY ();
550 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
554 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
555 puts ("** Timeout waiting for DONE to clear.\n");
560 putc ('\n'); /* terminate the dotted line */
563 * Run the post configuration function if there is one.
566 (*fn->post) (cookie);
569 #ifdef CFG_FPGA_PROG_FEEDBACK
570 if (ret_val == FPGA_SUCCESS) {
579 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
585 static int Spartan2_ss_dump (Xilinx_desc * desc, void *buf, size_t bsize)
587 /* Readback is only available through the Slave Parallel and */
588 /* boundary-scan interfaces. */
589 printf ("%s: Slave Serial Dumping is unavailable\n",
594 static int Spartan2_ss_reloc (Xilinx_desc * desc, ulong reloc_offset)
596 int ret_val = FPGA_FAIL; /* assume the worst */
597 Xilinx_Spartan2_Slave_Serial_fns *fn_r, *fn =
598 (Xilinx_Spartan2_Slave_Serial_fns *) (desc->iface_fns);
603 /* Get the relocated table address */
604 addr = (ulong) fn + reloc_offset;
605 fn_r = (Xilinx_Spartan2_Slave_Serial_fns *) addr;
607 if (!fn_r->relocated) {
609 if (memcmp (fn_r, fn,
610 sizeof (Xilinx_Spartan2_Slave_Serial_fns))
612 /* good copy of the table, fix the descriptor pointer */
613 desc->iface_fns = fn_r;
615 PRINTF ("%s: Invalid function table at 0x%p\n",
620 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
624 addr = (ulong) (fn->pre) + reloc_offset;
625 fn_r->pre = (Xilinx_pre_fn) addr;
628 addr = (ulong) (fn->pgm) + reloc_offset;
629 fn_r->pgm = (Xilinx_pgm_fn) addr;
631 addr = (ulong) (fn->init) + reloc_offset;
632 fn_r->init = (Xilinx_init_fn) addr;
634 addr = (ulong) (fn->done) + reloc_offset;
635 fn_r->done = (Xilinx_done_fn) addr;
637 addr = (ulong) (fn->clk) + reloc_offset;
638 fn_r->clk = (Xilinx_clk_fn) addr;
640 addr = (ulong) (fn->wr) + reloc_offset;
641 fn_r->wr = (Xilinx_wr_fn) addr;
644 addr = (ulong) (fn->post) + reloc_offset;
645 fn_r->post = (Xilinx_post_fn) addr;
648 fn_r->relocated = TRUE;
651 /* this table has already been moved */
652 /* XXX - should check to see if the descriptor is correct */
653 desc->iface_fns = fn_r;
656 ret_val = FPGA_SUCCESS;
658 printf ("%s: NULL Interface function table!\n", __FUNCTION__);