3 * Steven Scholz, imc Measurement & Control, steven.scholz@imc-berlin.de
6 * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <common.h> /* core U-Boot definitions */
29 #include <ACEX1K.h> /* ACEX device family */
31 /* Define FPGA_DEBUG to get debug printf's */
33 #define PRINTF(fmt,args...) printf (fmt ,##args)
35 #define PRINTF(fmt,args...)
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/10 /* 100 ms */
51 static int ACEX1K_ps_load( Altera_desc *desc, void *buf, size_t bsize );
52 static int ACEX1K_ps_dump( Altera_desc *desc, void *buf, size_t bsize );
53 /* static int ACEX1K_ps_info( Altera_desc *desc ); */
54 static int ACEX1K_ps_reloc( Altera_desc *desc, ulong reloc_offset );
56 /* ------------------------------------------------------------------------- */
57 /* ACEX1K Generic Implementation */
58 int ACEX1K_load (Altera_desc * desc, void *buf, size_t bsize)
60 int ret_val = FPGA_FAIL;
62 switch (desc->iface) {
64 PRINTF ("%s: Launching Passive Serial Loader\n", __FUNCTION__);
65 ret_val = ACEX1K_ps_load (desc, buf, bsize);
68 /* Add new interface types here */
71 printf ("%s: Unsupported interface type, %d\n",
72 __FUNCTION__, desc->iface);
78 int ACEX1K_dump (Altera_desc * desc, void *buf, size_t bsize)
80 int ret_val = FPGA_FAIL;
82 switch (desc->iface) {
84 PRINTF ("%s: Launching Passive Serial Dump\n", __FUNCTION__);
85 ret_val = ACEX1K_ps_dump (desc, buf, bsize);
88 /* Add new interface types here */
91 printf ("%s: Unsupported interface type, %d\n",
92 __FUNCTION__, desc->iface);
98 int ACEX1K_info( Altera_desc *desc )
104 int ACEX1K_reloc (Altera_desc * desc, ulong reloc_offset)
106 int ret_val = FPGA_FAIL; /* assume a failure */
108 if (desc->family != Altera_ACEX1K) {
109 printf ("%s: Unsupported family type, %d\n",
110 __FUNCTION__, desc->family);
113 switch (desc->iface) {
115 ret_val = ACEX1K_ps_reloc (desc, reloc_offset);
118 /* Add new interface types here */
121 printf ("%s: Unsupported interface type, %d\n",
122 __FUNCTION__, desc->iface);
129 /* ------------------------------------------------------------------------- */
130 /* ACEX1K Passive Serial Generic Implementation */
132 static int ACEX1K_ps_load (Altera_desc * desc, void *buf, size_t bsize)
134 int ret_val = FPGA_FAIL; /* assume the worst */
135 Altera_ACEX1K_Passive_Serial_fns *fn = desc->iface_fns;
138 PRINTF ("%s: start with interface functions @ 0x%p\n",
142 size_t bytecount = 0;
143 unsigned char *data = (unsigned char *) buf;
144 int cookie = desc->cookie; /* make a local copy */
145 unsigned long ts; /* timestamp */
147 PRINTF ("%s: Function Table:\n"
155 __FUNCTION__, &fn, fn, fn->config, fn->status,
156 fn->clk, fn->data, fn->done);
157 #ifdef CFG_FPGA_PROG_FEEDBACK
158 printf ("Loading FPGA Device %d...", cookie);
162 * Run the pre configuration function if there is one.
168 /* Establish the initial state */
169 (*fn->config) (TRUE, TRUE, cookie); /* Assert nCONFIG */
171 udelay(2); /* T_cfg > 2us */
173 /* nSTATUS should be asserted now */
174 (*fn->done) (cookie);
175 if ( !(*fn->status) (cookie) ) {
176 puts ("** nSTATUS is not asserted.\n");
177 (*fn->abort) (cookie);
181 (*fn->config) (FALSE, TRUE, cookie); /* Deassert nCONFIG */
182 udelay(2); /* T_cf2st1 < 4us */
184 /* Wait for nSTATUS to be released (i.e. deasserted) */
185 ts = get_timer (0); /* get current time */
187 CONFIG_FPGA_DELAY ();
188 if (get_timer (ts) > CFG_FPGA_WAIT) { /* check the time */
189 puts ("** Timeout waiting for STATUS to go high.\n");
190 (*fn->abort) (cookie);
193 (*fn->done) (cookie);
194 } while ((*fn->status) (cookie));
196 /* Get ready for the burn */
197 CONFIG_FPGA_DELAY ();
200 while (bytecount < bsize) {
202 #ifdef CFG_FPGA_CHECK_CTRLC
204 (*fn->abort) (cookie);
208 /* Altera detects an error if INIT goes low (active)
209 while DONE is low (inactive) */
210 #if 0 /* not yet implemented */
211 if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
212 puts ("** CRC error during FPGA load.\n");
213 (*fn->abort) (cookie);
217 val = data [bytecount ++ ];
220 /* Deassert the clock */
221 (*fn->clk) (FALSE, TRUE, cookie);
222 CONFIG_FPGA_DELAY ();
224 (*fn->data) ( (val & 0x01), TRUE, cookie);
225 CONFIG_FPGA_DELAY ();
226 /* Assert the clock */
227 (*fn->clk) (TRUE, TRUE, cookie);
228 CONFIG_FPGA_DELAY ();
233 #ifdef CFG_FPGA_PROG_FEEDBACK
234 if (bytecount % (bsize / 40) == 0)
235 putc ('.'); /* let them know we are alive */
239 CONFIG_FPGA_DELAY ();
241 #ifdef CFG_FPGA_PROG_FEEDBACK
242 putc (' '); /* terminate the dotted line */
246 * Checking FPGA's CONF_DONE signal - correctly booted ?
249 if ( ! (*fn->done) (cookie) ) {
250 puts ("** Booting failed! CONF_DONE is still deasserted.\n");
251 (*fn->abort) (cookie);
256 * "DCLK must be clocked an additional 10 times fpr ACEX 1K..."
259 for (i = 0; i < 12; i++) {
260 CONFIG_FPGA_DELAY ();
261 (*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
262 CONFIG_FPGA_DELAY ();
263 (*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
266 ret_val = FPGA_SUCCESS;
268 #ifdef CFG_FPGA_PROG_FEEDBACK
269 if (ret_val == FPGA_SUCCESS) {
276 (*fn->post) (cookie);
279 printf ("%s: NULL Interface function table!\n", __FUNCTION__);
285 static int ACEX1K_ps_dump (Altera_desc * desc, void *buf, size_t bsize)
287 /* Readback is only available through the Slave Parallel and */
288 /* boundary-scan interfaces. */
289 printf ("%s: Passive Serial Dumping is unavailable\n",
294 static int ACEX1K_ps_reloc (Altera_desc * desc, ulong reloc_offset)
296 int ret_val = FPGA_FAIL; /* assume the worst */
297 Altera_ACEX1K_Passive_Serial_fns *fn_r, *fn =
298 (Altera_ACEX1K_Passive_Serial_fns *) (desc->iface_fns);
303 /* Get the relocated table address */
304 addr = (ulong) fn + reloc_offset;
305 fn_r = (Altera_ACEX1K_Passive_Serial_fns *) addr;
307 if (!fn_r->relocated) {
309 if (memcmp (fn_r, fn,
310 sizeof (Altera_ACEX1K_Passive_Serial_fns))
312 /* good copy of the table, fix the descriptor pointer */
313 desc->iface_fns = fn_r;
315 PRINTF ("%s: Invalid function table at 0x%p\n",
320 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
323 addr = (ulong) (fn->pre) + reloc_offset;
324 fn_r->pre = (Altera_pre_fn) addr;
326 addr = (ulong) (fn->config) + reloc_offset;
327 fn_r->config = (Altera_config_fn) addr;
329 addr = (ulong) (fn->status) + reloc_offset;
330 fn_r->status = (Altera_status_fn) addr;
332 addr = (ulong) (fn->done) + reloc_offset;
333 fn_r->done = (Altera_done_fn) addr;
335 addr = (ulong) (fn->clk) + reloc_offset;
336 fn_r->clk = (Altera_clk_fn) addr;
338 addr = (ulong) (fn->data) + reloc_offset;
339 fn_r->data = (Altera_data_fn) addr;
341 addr = (ulong) (fn->abort) + reloc_offset;
342 fn_r->abort = (Altera_abort_fn) addr;
344 addr = (ulong) (fn->post) + reloc_offset;
345 fn_r->post = (Altera_post_fn) addr;
347 fn_r->relocated = TRUE;
350 /* this table has already been moved */
351 /* XXX - should check to see if the descriptor is correct */
352 desc->iface_fns = fn_r;
355 ret_val = FPGA_SUCCESS;
357 printf ("%s: NULL Interface function table!\n", __FUNCTION__);