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 #if (CONFIG_FPGA & (CFG_XILINX | CFG_SPARTAN2))
30 /* Define FPGA_DEBUG to get debug printf's */
32 #define PRINTF(fmt,args...) printf (fmt ,##args)
34 #define PRINTF(fmt,args...)
37 #undef CFG_FPGA_CHECK_BUSY
38 #undef CFG_FPGA_PROG_FEEDBACK
40 /* Note: The assumption is that we cannot possibly run fast enough to
41 * overrun the device (the Slave Parallel mode can free run at 50MHz).
42 * If there is a need to operate slower, define CONFIG_FPGA_DELAY in
43 * the board config file to slow things down.
45 #ifndef CONFIG_FPGA_DELAY
46 #define CONFIG_FPGA_DELAY()
50 #define CFG_FPGA_WAIT CFG_HZ/100 /* 10 ms */
53 static int Spartan2_sp_load( Xilinx_desc *desc, void *buf, size_t bsize );
54 static int Spartan2_sp_dump( Xilinx_desc *desc, void *buf, size_t bsize );
55 /* static int Spartan2_sp_info( Xilinx_desc *desc ); */
56 static int Spartan2_sp_reloc( Xilinx_desc *desc, ulong reloc_offset );
58 static int Spartan2_ss_load( Xilinx_desc *desc, void *buf, size_t bsize );
59 static int Spartan2_ss_dump( Xilinx_desc *desc, void *buf, size_t bsize );
60 /* static int Spartan2_ss_info( Xilinx_desc *desc ); */
61 static int Spartan2_ss_reloc( Xilinx_desc *desc, ulong reloc_offset );
63 /* ------------------------------------------------------------------------- */
64 /* Spartan-II Generic Implementation */
65 int Spartan2_load (Xilinx_desc * desc, void *buf, size_t bsize)
67 int ret_val = FPGA_FAIL;
69 switch (desc->iface) {
71 PRINTF ("%s: Launching Slave Serial Load\n", __FUNCTION__);
72 ret_val = Spartan2_ss_load (desc, buf, bsize);
76 PRINTF ("%s: Launching Slave Parallel Load\n", __FUNCTION__);
77 ret_val = Spartan2_sp_load (desc, buf, bsize);
81 printf ("%s: Unsupported interface type, %d\n",
82 __FUNCTION__, desc->iface);
88 int Spartan2_dump (Xilinx_desc * desc, void *buf, size_t bsize)
90 int ret_val = FPGA_FAIL;
92 switch (desc->iface) {
94 PRINTF ("%s: Launching Slave Serial Dump\n", __FUNCTION__);
95 ret_val = Spartan2_ss_dump (desc, buf, bsize);
99 PRINTF ("%s: Launching Slave Parallel Dump\n", __FUNCTION__);
100 ret_val = Spartan2_sp_dump (desc, buf, bsize);
104 printf ("%s: Unsupported interface type, %d\n",
105 __FUNCTION__, desc->iface);
111 int Spartan2_info( Xilinx_desc *desc )
117 int Spartan2_reloc (Xilinx_desc * desc, ulong reloc_offset)
119 int ret_val = FPGA_FAIL; /* assume a failure */
121 if (desc->family != Xilinx_Spartan2) {
122 printf ("%s: Unsupported family type, %d\n",
123 __FUNCTION__, desc->family);
126 switch (desc->iface) {
128 ret_val = Spartan2_ss_reloc (desc, reloc_offset);
132 ret_val = Spartan2_sp_reloc (desc, reloc_offset);
136 printf ("%s: Unsupported interface type, %d\n",
137 __FUNCTION__, desc->iface);
144 /* ------------------------------------------------------------------------- */
145 /* Spartan-II Slave Parallel Generic Implementation */
147 static int Spartan2_sp_load (Xilinx_desc * desc, void *buf, size_t bsize)
149 int ret_val = FPGA_FAIL; /* assume the worst */
150 Xilinx_Spartan2_Slave_Parallel_fns *fn = desc->iface_fns;
152 PRINTF ("%s: start with interface functions @ 0x%p\n",
156 size_t bytecount = 0;
157 unsigned char *data = (unsigned char *) buf;
158 int cookie = desc->cookie; /* make a local copy */
159 unsigned long ts; /* timestamp */
161 PRINTF ("%s: Function Table:\n"
172 "write data:\t0x%p\n"
176 __FUNCTION__, &fn, fn, fn->pre, fn->pgm, fn->init, fn->err,
177 fn->clk, fn->cs, fn->wr, fn->rdata, fn->wdata, fn->busy,
178 fn->abort, fn->post);
181 * This code is designed to emulate the "Express Style"
182 * Continuous Data Loading in Slave Parallel Mode for
183 * the Spartan-II Family.
185 #ifdef CFG_FPGA_PROG_FEEDBACK
186 printf ("Loading FPGA Device %d...\n", cookie);
189 * Run the pre configuration function if there is one.
195 /* Establish the initial state */
196 (*fn->pgm) (TRUE, TRUE, cookie); /* Assert the program, commit */
198 /* Get ready for the burn */
199 CONFIG_FPGA_DELAY ();
200 (*fn->pgm) (FALSE, TRUE, cookie); /* Deassert the program, commit */
202 ts = get_timer (0); /* get current time */
203 /* Now wait for INIT and BUSY to go high */
205 CONFIG_FPGA_DELAY ();
206 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
207 puts ("** Timeout waiting for INIT to clear.\n");
208 (*fn->abort) (cookie); /* abort the burn */
211 } while ((*fn->init) (cookie) && (*fn->busy) (cookie));
213 (*fn->wr) (TRUE, TRUE, cookie); /* Assert write, commit */
214 (*fn->cs) (TRUE, TRUE, cookie); /* Assert chip select, commit */
215 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
218 while (bytecount < bsize) {
219 /* XXX - do we check for an Ctrl-C press in here ??? */
220 /* XXX - Check the error bit? */
222 (*fn->wdata) (data[bytecount++], TRUE, cookie); /* write the data */
223 CONFIG_FPGA_DELAY ();
224 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
225 CONFIG_FPGA_DELAY ();
226 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
228 #ifdef CFG_FPGA_CHECK_BUSY
229 ts = get_timer (0); /* get current time */
230 while ((*fn->busy) (cookie)) {
231 /* XXX - we should have a check in here somewhere to
232 * make sure we aren't busy forever... */
234 CONFIG_FPGA_DELAY ();
235 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
236 CONFIG_FPGA_DELAY ();
237 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
239 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
240 puts ("** Timeout waiting for BUSY to clear.\n");
241 (*fn->abort) (cookie); /* abort the burn */
247 #ifdef CFG_FPGA_PROG_FEEDBACK
248 if (bytecount % (bsize / 40) == 0)
249 putc ('.'); /* let them know we are alive */
253 CONFIG_FPGA_DELAY ();
254 (*fn->cs) (FALSE, TRUE, cookie); /* Deassert the chip select */
255 (*fn->wr) (FALSE, TRUE, cookie); /* Deassert the write pin */
257 #ifdef CFG_FPGA_PROG_FEEDBACK
258 putc ('\n'); /* terminate the dotted line */
261 /* now check for done signal */
262 ts = get_timer (0); /* get current time */
263 ret_val = FPGA_SUCCESS;
264 while ((*fn->done) (cookie) == FPGA_FAIL) {
265 /* XXX - we should have a check in here somewhere to
266 * make sure we aren't busy forever... */
268 CONFIG_FPGA_DELAY ();
269 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
270 CONFIG_FPGA_DELAY ();
271 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
273 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
274 puts ("** Timeout waiting for DONE to clear.\n");
275 (*fn->abort) (cookie); /* abort the burn */
281 if (ret_val == FPGA_SUCCESS) {
282 #ifdef CFG_FPGA_PROG_FEEDBACK
287 * Run the post configuration function if there is one.
290 (*fn->post) (cookie);
294 #ifdef CFG_FPGA_PROG_FEEDBACK
300 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
306 static int Spartan2_sp_dump (Xilinx_desc * desc, void *buf, size_t bsize)
308 int ret_val = FPGA_FAIL; /* assume the worst */
309 Xilinx_Spartan2_Slave_Parallel_fns *fn = desc->iface_fns;
312 unsigned char *data = (unsigned char *) buf;
313 size_t bytecount = 0;
314 int cookie = desc->cookie; /* make a local copy */
316 printf ("Starting Dump of FPGA Device %d...\n", cookie);
318 (*fn->cs) (TRUE, TRUE, cookie); /* Assert chip select, commit */
319 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
322 while (bytecount < bsize) {
323 /* XXX - do we check for an Ctrl-C press in here ??? */
325 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
326 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
327 (*fn->rdata) (&(data[bytecount++]), cookie); /* read the data */
328 #ifdef CFG_FPGA_PROG_FEEDBACK
329 if (bytecount % (bsize / 40) == 0)
330 putc ('.'); /* let them know we are alive */
334 (*fn->cs) (FALSE, FALSE, cookie); /* Deassert the chip select */
335 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
336 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
338 #ifdef CFG_FPGA_PROG_FEEDBACK
339 putc ('\n'); /* terminate the dotted line */
343 /* XXX - checksum the data? */
345 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
352 static int Spartan2_sp_reloc (Xilinx_desc * desc, ulong reloc_offset)
354 int ret_val = FPGA_FAIL; /* assume the worst */
355 Xilinx_Spartan2_Slave_Parallel_fns *fn_r, *fn =
356 (Xilinx_Spartan2_Slave_Parallel_fns *) (desc->iface_fns);
361 /* Get the relocated table address */
362 addr = (ulong) fn + reloc_offset;
363 fn_r = (Xilinx_Spartan2_Slave_Parallel_fns *) addr;
365 if (!fn_r->relocated) {
367 if (memcmp (fn_r, fn,
368 sizeof (Xilinx_Spartan2_Slave_Parallel_fns))
370 /* good copy of the table, fix the descriptor pointer */
371 desc->iface_fns = fn_r;
373 PRINTF ("%s: Invalid function table at 0x%p\n",
378 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
381 addr = (ulong) (fn->pre) + reloc_offset;
382 fn_r->pre = (Xilinx_pre_fn) addr;
384 addr = (ulong) (fn->pgm) + reloc_offset;
385 fn_r->pgm = (Xilinx_pgm_fn) addr;
387 addr = (ulong) (fn->init) + reloc_offset;
388 fn_r->init = (Xilinx_init_fn) addr;
390 addr = (ulong) (fn->done) + reloc_offset;
391 fn_r->done = (Xilinx_done_fn) addr;
393 addr = (ulong) (fn->clk) + reloc_offset;
394 fn_r->clk = (Xilinx_clk_fn) addr;
396 addr = (ulong) (fn->err) + reloc_offset;
397 fn_r->err = (Xilinx_err_fn) addr;
399 addr = (ulong) (fn->cs) + reloc_offset;
400 fn_r->cs = (Xilinx_cs_fn) addr;
402 addr = (ulong) (fn->wr) + reloc_offset;
403 fn_r->wr = (Xilinx_wr_fn) addr;
405 addr = (ulong) (fn->rdata) + reloc_offset;
406 fn_r->rdata = (Xilinx_rdata_fn) addr;
408 addr = (ulong) (fn->wdata) + reloc_offset;
409 fn_r->wdata = (Xilinx_wdata_fn) addr;
411 addr = (ulong) (fn->busy) + reloc_offset;
412 fn_r->busy = (Xilinx_busy_fn) addr;
414 addr = (ulong) (fn->abort) + reloc_offset;
415 fn_r->abort = (Xilinx_abort_fn) addr;
417 addr = (ulong) (fn->post) + reloc_offset;
418 fn_r->post = (Xilinx_post_fn) addr;
420 fn_r->relocated = TRUE;
423 /* this table has already been moved */
424 /* XXX - should check to see if the descriptor is correct */
425 desc->iface_fns = fn_r;
428 ret_val = FPGA_SUCCESS;
430 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
437 /* ------------------------------------------------------------------------- */
439 static int Spartan2_ss_load (Xilinx_desc * desc, void *buf, size_t bsize)
441 int ret_val = FPGA_FAIL; /* assume the worst */
442 Xilinx_Spartan2_Slave_Serial_fns *fn = desc->iface_fns;
446 PRINTF ("%s: start with interface functions @ 0x%p\n",
450 size_t bytecount = 0;
451 unsigned char *data = (unsigned char *) buf;
452 int cookie = desc->cookie; /* make a local copy */
453 unsigned long ts; /* timestamp */
455 PRINTF ("%s: Function Table:\n"
463 __FUNCTION__, &fn, fn, fn->pgm, fn->init,
464 fn->clk, fn->wr, fn->done);
465 #ifdef CFG_FPGA_PROG_FEEDBACK
466 printf ("Loading FPGA Device %d...\n", cookie);
470 * Run the pre configuration function if there is one.
476 /* Establish the initial state */
477 (*fn->pgm) (TRUE, TRUE, cookie); /* Assert the program, commit */
479 /* Wait for INIT state (init low) */
480 ts = get_timer (0); /* get current time */
482 CONFIG_FPGA_DELAY ();
483 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
484 puts ("** Timeout waiting for INIT to start.\n");
487 } while (!(*fn->init) (cookie));
489 /* Get ready for the burn */
490 CONFIG_FPGA_DELAY ();
491 (*fn->pgm) (FALSE, TRUE, cookie); /* Deassert the program, commit */
493 ts = get_timer (0); /* get current time */
494 /* Now wait for INIT to go high */
496 CONFIG_FPGA_DELAY ();
497 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
498 puts ("** Timeout waiting for INIT to clear.\n");
501 } while ((*fn->init) (cookie));
504 while (bytecount < bsize) {
506 /* Xilinx detects an error if INIT goes low (active)
507 while DONE is low (inactive) */
508 if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
509 puts ("** CRC error during FPGA load.\n");
512 val = data [bytecount ++];
515 /* Deassert the clock */
516 (*fn->clk) (FALSE, TRUE, cookie);
517 CONFIG_FPGA_DELAY ();
519 (*fn->wr) ((val & 0x80), TRUE, cookie);
520 CONFIG_FPGA_DELAY ();
521 /* Assert the clock */
522 (*fn->clk) (TRUE, TRUE, cookie);
523 CONFIG_FPGA_DELAY ();
528 #ifdef CFG_FPGA_PROG_FEEDBACK
529 if (bytecount % (bsize / 40) == 0)
530 putc ('.'); /* let them know we are alive */
534 CONFIG_FPGA_DELAY ();
536 #ifdef CFG_FPGA_PROG_FEEDBACK
537 putc ('\n'); /* terminate the dotted line */
540 /* now check for done signal */
541 ts = get_timer (0); /* get current time */
542 ret_val = FPGA_SUCCESS;
543 (*fn->wr) (TRUE, TRUE, cookie);
545 while (! (*fn->done) (cookie)) {
546 /* XXX - we should have a check in here somewhere to
547 * make sure we aren't busy forever... */
549 CONFIG_FPGA_DELAY ();
550 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
551 CONFIG_FPGA_DELAY ();
552 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
556 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
557 puts ("** Timeout waiting for DONE to clear.\n");
562 putc ('\n'); /* terminate the dotted line */
564 #ifdef CFG_FPGA_PROG_FEEDBACK
565 if (ret_val == FPGA_SUCCESS) {
574 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
580 static int Spartan2_ss_dump (Xilinx_desc * desc, void *buf, size_t bsize)
582 /* Readback is only available through the Slave Parallel and */
583 /* boundary-scan interfaces. */
584 printf ("%s: Slave Serial Dumping is unavailable\n",
589 static int Spartan2_ss_reloc (Xilinx_desc * desc, ulong reloc_offset)
591 int ret_val = FPGA_FAIL; /* assume the worst */
592 Xilinx_Spartan2_Slave_Serial_fns *fn_r, *fn =
593 (Xilinx_Spartan2_Slave_Serial_fns *) (desc->iface_fns);
598 /* Get the relocated table address */
599 addr = (ulong) fn + reloc_offset;
600 fn_r = (Xilinx_Spartan2_Slave_Serial_fns *) addr;
602 if (!fn_r->relocated) {
604 if (memcmp (fn_r, fn,
605 sizeof (Xilinx_Spartan2_Slave_Serial_fns))
607 /* good copy of the table, fix the descriptor pointer */
608 desc->iface_fns = fn_r;
610 PRINTF ("%s: Invalid function table at 0x%p\n",
615 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
618 addr = (ulong) (fn->pre) + reloc_offset;
619 fn_r->pre = (Xilinx_pre_fn) addr;
621 addr = (ulong) (fn->pgm) + reloc_offset;
622 fn_r->pgm = (Xilinx_pgm_fn) addr;
624 addr = (ulong) (fn->init) + reloc_offset;
625 fn_r->init = (Xilinx_init_fn) addr;
627 addr = (ulong) (fn->done) + reloc_offset;
628 fn_r->done = (Xilinx_done_fn) addr;
630 addr = (ulong) (fn->clk) + reloc_offset;
631 fn_r->clk = (Xilinx_clk_fn) addr;
633 addr = (ulong) (fn->wr) + reloc_offset;
634 fn_r->wr = (Xilinx_wr_fn) addr;
636 fn_r->relocated = TRUE;
639 /* this table has already been moved */
640 /* XXX - should check to see if the descriptor is correct */
641 desc->iface_fns = fn_r;
644 ret_val = FPGA_SUCCESS;
646 printf ("%s: NULL Interface function table!\n", __FUNCTION__);