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e2211743 WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Rich Ireland, Enterasys Networks, rireland@enterasys.com. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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, | |
21 | * MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | /* | |
26 | * Generic FPGA support | |
27 | */ | |
28 | #include <common.h> /* core U-Boot definitions */ | |
29 | #include <xilinx.h> /* xilinx specific definitions */ | |
30 | #include <altera.h> /* altera specific definitions */ | |
31 | ||
32 | #if defined(CONFIG_FPGA) | |
33 | ||
34 | #if 0 | |
35 | #define FPGA_DEBUG /* define FPGA_DEBUG to get debug messages */ | |
36 | #endif | |
37 | ||
38 | /* Local definitions */ | |
39 | #ifndef CONFIG_MAX_FPGA_DEVICES | |
40 | #define CONFIG_MAX_FPGA_DEVICES 5 | |
41 | #endif | |
42 | ||
43 | /* Enable/Disable debug console messages */ | |
44 | #ifdef FPGA_DEBUG | |
45 | #define PRINTF(fmt,args...) printf (fmt ,##args) | |
46 | #else | |
47 | #define PRINTF(fmt,args...) | |
48 | #endif | |
49 | ||
50 | /* Local static data */ | |
51 | static ulong relocation_offset = 0; | |
52 | static int next_desc = FPGA_INVALID_DEVICE; | |
53 | static fpga_desc desc_table[CONFIG_MAX_FPGA_DEVICES]; | |
54 | ||
55 | /* Local static functions */ | |
77ddac94 WD |
56 | static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum ); |
57 | static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf, | |
8bde7f77 | 58 | size_t bsize, char *fn ); |
e2211743 WD |
59 | static int fpga_dev_info( int devnum ); |
60 | ||
61 | ||
62 | /* ------------------------------------------------------------------------- */ | |
63 | ||
64 | /* fpga_no_sup | |
65 | * 'no support' message function | |
66 | */ | |
67 | static void fpga_no_sup( char *fn, char *msg ) | |
68 | { | |
69 | if ( fn && msg ) { | |
0133502e | 70 | printf( "%s: No support for %s.\n", fn, msg); |
e2211743 | 71 | } else if ( msg ) { |
0133502e | 72 | printf( "No support for %s.\n", msg); |
e2211743 | 73 | } else { |
0133502e | 74 | printf( "No FPGA suport!\n"); |
e2211743 WD |
75 | } |
76 | } | |
77 | ||
78 | ||
79 | /* fpga_get_desc | |
80 | * map a device number to a descriptor | |
81 | */ | |
77ddac94 | 82 | static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum ) |
e2211743 WD |
83 | { |
84 | fpga_desc *desc = (fpga_desc * )NULL; | |
85 | ||
86 | if (( devnum >= 0 ) && (devnum < next_desc )) { | |
87 | desc = &desc_table[devnum]; | |
88 | PRINTF( "%s: found fpga descriptor #%d @ 0x%p\n", | |
89 | __FUNCTION__, devnum, desc ); | |
90 | } | |
91 | ||
92 | return desc; | |
93 | } | |
94 | ||
95 | ||
96 | /* fpga_validate | |
97 | * generic parameter checking code | |
98 | */ | |
77ddac94 | 99 | static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf, |
8bde7f77 | 100 | size_t bsize, char *fn ) |
e2211743 | 101 | { |
77ddac94 | 102 | fpga_desc * desc = fpga_get_desc( devnum ); |
e2211743 WD |
103 | |
104 | if ( !desc ) { | |
105 | printf( "%s: Invalid device number %d\n", fn, devnum ); | |
106 | } | |
107 | ||
108 | if ( !buf ) { | |
109 | printf( "%s: Null buffer.\n", fn ); | |
110 | return (fpga_desc * const)NULL; | |
111 | } | |
e2211743 WD |
112 | return desc; |
113 | } | |
114 | ||
115 | ||
116 | /* fpga_dev_info | |
117 | * generic multiplexing code | |
118 | */ | |
119 | static int fpga_dev_info( int devnum ) | |
120 | { | |
121 | int ret_val = FPGA_FAIL; /* assume failure */ | |
122 | const fpga_desc * const desc = fpga_get_desc( devnum ); | |
123 | ||
124 | if ( desc ) { | |
125 | PRINTF( "%s: Device Descriptor @ 0x%p\n", | |
126 | __FUNCTION__, desc->devdesc ); | |
127 | ||
128 | switch ( desc->devtype ) { | |
129 | case fpga_xilinx: | |
0133502e | 130 | #if defined(CONFIG_FPGA_XILINX) |
e2211743 WD |
131 | printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc ); |
132 | ret_val = xilinx_info( desc->devdesc ); | |
133 | #else | |
64cd52ef | 134 | fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); |
e2211743 WD |
135 | #endif |
136 | break; | |
137 | case fpga_altera: | |
0133502e | 138 | #if defined(CONFIG_FPGA_ALTERA) |
e2211743 WD |
139 | printf( "Altera Device\nDescriptor @ 0x%p\n", desc ); |
140 | ret_val = altera_info( desc->devdesc ); | |
141 | #else | |
77ddac94 | 142 | fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); |
e2211743 WD |
143 | #endif |
144 | break; | |
145 | default: | |
146 | printf( "%s: Invalid or unsupported device type %d\n", | |
147 | __FUNCTION__, desc->devtype ); | |
148 | } | |
149 | } else { | |
150 | printf( "%s: Invalid device number %d\n", | |
151 | __FUNCTION__, devnum ); | |
152 | } | |
153 | ||
154 | return ret_val; | |
155 | } | |
156 | ||
157 | ||
158 | /* fpga_reloc | |
159 | * generic multiplexing code | |
160 | */ | |
161 | int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off ) | |
162 | { | |
163 | int ret_val = FPGA_FAIL; | |
164 | ||
165 | PRINTF( "%s: Relocating Device of type %d @ 0x%p with offset %lx\n", | |
166 | __FUNCTION__, devtype, desc, reloc_off ); | |
167 | ||
168 | switch ( devtype ) { | |
169 | case fpga_xilinx: | |
0133502e | 170 | #if defined(CONFIG_FPGA_XILINX) |
e2211743 WD |
171 | ret_val = xilinx_reloc( desc, reloc_off ); |
172 | #else | |
64cd52ef | 173 | fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); |
e2211743 WD |
174 | #endif |
175 | break; | |
176 | case fpga_altera: | |
0133502e | 177 | #if defined(CONFIG_FPGA_ALTERA) |
e2211743 WD |
178 | ret_val = altera_reloc( desc, reloc_off ); |
179 | #else | |
77ddac94 | 180 | fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); |
e2211743 WD |
181 | #endif |
182 | break; | |
183 | default: | |
184 | printf( "%s: Invalid or unsupported device type %d\n", | |
185 | __FUNCTION__, devtype ); | |
186 | } | |
187 | ||
188 | return ret_val; | |
189 | } | |
190 | ||
191 | /* ------------------------------------------------------------------------- */ | |
192 | /* fgpa_init is usually called from misc_init_r() and MUST be called | |
193 | * before any of the other fpga functions are used. | |
194 | */ | |
195 | void fpga_init( ulong reloc_off ) | |
196 | { | |
197 | relocation_offset = reloc_off; | |
198 | next_desc = 0; | |
199 | memset( desc_table, 0, sizeof(desc_table)); | |
200 | ||
201 | PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA ); | |
202 | #if 0 | |
203 | PRINTF( "%s: CFG_FPGA_XILINX = 0x%x\n", __FUNCTION__, CFG_FPGA_XILINX ); | |
204 | PRINTF( "%s: CFG_FPGA_ALTERA = 0x%x\n", __FUNCTION__, CFG_FPGA_ALTERA ); | |
205 | #endif | |
206 | } | |
207 | ||
208 | /* fpga_count | |
209 | * Basic interface function to get the current number of devices available. | |
210 | */ | |
77ddac94 | 211 | int fpga_count( void ) |
e2211743 WD |
212 | { |
213 | return next_desc; | |
214 | } | |
215 | ||
216 | /* fpga_add | |
217 | * Attempts to relocate the device/board specific interface code | |
218 | * to the proper RAM locations and adds the device descriptor to | |
219 | * the device table. | |
220 | */ | |
221 | int fpga_add( fpga_type devtype, void *desc ) | |
222 | { | |
223 | int devnum = FPGA_INVALID_DEVICE; | |
224 | ||
225 | if ( next_desc < 0 ) { | |
226 | printf( "%s: FPGA support not initialized!\n", __FUNCTION__ ); | |
227 | } else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) { | |
228 | if ( desc ) { | |
229 | if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) { | |
230 | if ( fpga_reloc( devtype, desc, relocation_offset ) | |
231 | == FPGA_SUCCESS ) { | |
232 | devnum = next_desc; | |
233 | desc_table[next_desc].devtype = devtype; | |
234 | desc_table[next_desc++].devdesc = desc; | |
235 | } else { | |
236 | printf( "%s: Unable to relocate device interface table!\n", | |
237 | __FUNCTION__ ); | |
238 | } | |
239 | } else { | |
240 | printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ ); | |
241 | } | |
242 | } else { | |
243 | printf( "%s: NULL device descriptor\n", __FUNCTION__ ); | |
244 | } | |
245 | } else { | |
246 | printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype ); | |
247 | } | |
248 | ||
249 | return devnum; | |
250 | } | |
251 | ||
252 | /* | |
253 | * Generic multiplexing code | |
254 | */ | |
255 | int fpga_load( int devnum, void *buf, size_t bsize ) | |
256 | { | |
257 | int ret_val = FPGA_FAIL; /* assume failure */ | |
77ddac94 | 258 | fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ ); |
e2211743 WD |
259 | |
260 | if ( desc ) { | |
261 | switch ( desc->devtype ) { | |
262 | case fpga_xilinx: | |
0133502e | 263 | #if defined(CONFIG_FPGA_XILINX) |
e2211743 WD |
264 | ret_val = xilinx_load( desc->devdesc, buf, bsize ); |
265 | #else | |
64cd52ef | 266 | fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); |
e2211743 WD |
267 | #endif |
268 | break; | |
269 | case fpga_altera: | |
0133502e | 270 | #if defined(CONFIG_FPGA_ALTERA) |
e2211743 WD |
271 | ret_val = altera_load( desc->devdesc, buf, bsize ); |
272 | #else | |
77ddac94 | 273 | fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); |
e2211743 WD |
274 | #endif |
275 | break; | |
276 | default: | |
277 | printf( "%s: Invalid or unsupported device type %d\n", | |
278 | __FUNCTION__, desc->devtype ); | |
279 | } | |
280 | } | |
281 | ||
282 | return ret_val; | |
283 | } | |
284 | ||
285 | /* fpga_dump | |
286 | * generic multiplexing code | |
287 | */ | |
288 | int fpga_dump( int devnum, void *buf, size_t bsize ) | |
289 | { | |
290 | int ret_val = FPGA_FAIL; /* assume failure */ | |
77ddac94 | 291 | fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ ); |
e2211743 WD |
292 | |
293 | if ( desc ) { | |
294 | switch ( desc->devtype ) { | |
295 | case fpga_xilinx: | |
0133502e | 296 | #if defined(CONFIG_FPGA_XILINX) |
e2211743 WD |
297 | ret_val = xilinx_dump( desc->devdesc, buf, bsize ); |
298 | #else | |
64cd52ef | 299 | fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); |
e2211743 WD |
300 | #endif |
301 | break; | |
302 | case fpga_altera: | |
0133502e | 303 | #if defined(CONFIG_FPGA_ALTERA) |
e2211743 WD |
304 | ret_val = altera_dump( desc->devdesc, buf, bsize ); |
305 | #else | |
77ddac94 | 306 | fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); |
e2211743 WD |
307 | #endif |
308 | break; | |
309 | default: | |
310 | printf( "%s: Invalid or unsupported device type %d\n", | |
311 | __FUNCTION__, desc->devtype ); | |
312 | } | |
313 | } | |
314 | ||
315 | return ret_val; | |
316 | } | |
317 | ||
318 | ||
319 | /* fpga_info | |
320 | * front end to fpga_dev_info. If devnum is invalid, report on all | |
321 | * available devices. | |
322 | */ | |
323 | int fpga_info( int devnum ) | |
324 | { | |
325 | if ( devnum == FPGA_INVALID_DEVICE ) { | |
326 | if ( next_desc > 0 ) { | |
327 | int dev; | |
328 | ||
329 | for ( dev = 0; dev < next_desc; dev++ ) { | |
330 | fpga_dev_info( dev ); | |
331 | } | |
332 | return FPGA_SUCCESS; | |
333 | } else { | |
334 | printf( "%s: No FPGA devices available.\n", __FUNCTION__ ); | |
335 | return FPGA_FAIL; | |
336 | } | |
337 | } | |
338 | else return fpga_dev_info( devnum ); | |
339 | } | |
340 | ||
341 | /* ------------------------------------------------------------------------- */ | |
342 | ||
343 | #endif /* CONFIG_FPGA */ |