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,
26 * Generic FPGA support
28 #include <common.h> /* core U-Boot definitions */
29 #include <xilinx.h> /* xilinx specific definitions */
30 #include <altera.h> /* altera specific definitions */
32 #if defined(CONFIG_FPGA)
35 #define FPGA_DEBUG /* define FPGA_DEBUG to get debug messages */
38 /* Local definitions */
39 #ifndef CONFIG_MAX_FPGA_DEVICES
40 #define CONFIG_MAX_FPGA_DEVICES 5
43 /* Enable/Disable debug console messages */
45 #define PRINTF(fmt,args...) printf (fmt ,##args)
47 #define PRINTF(fmt,args...)
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];
55 /* Local static functions */
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,
58 size_t bsize, char *fn );
59 static int fpga_dev_info( int devnum );
62 /* ------------------------------------------------------------------------- */
65 * 'no support' message function
67 static void fpga_no_sup( char *fn, char *msg )
70 printf( "%s: No support for %s. CONFIG_FPGA defined as 0x%x.\n",
71 fn, msg, CONFIG_FPGA );
73 printf( "No support for %s. CONFIG_FPGA defined as 0x%x.\n",
76 printf( "No FPGA suport! CONFIG_FPGA defined as 0x%x.\n",
83 * map a device number to a descriptor
85 static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum )
87 fpga_desc *desc = (fpga_desc * )NULL;
89 if (( devnum >= 0 ) && (devnum < next_desc )) {
90 desc = &desc_table[devnum];
91 PRINTF( "%s: found fpga descriptor #%d @ 0x%p\n",
92 __FUNCTION__, devnum, desc );
100 * generic parameter checking code
102 static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
103 size_t bsize, char *fn )
105 fpga_desc * desc = fpga_get_desc( devnum );
108 printf( "%s: Invalid device number %d\n", fn, devnum );
112 printf( "%s: Null buffer.\n", fn );
113 return (fpga_desc * const)NULL;
116 printf( "%s: Null buffer size.\n", fn );
117 return (fpga_desc * const)NULL;
125 * generic multiplexing code
127 static int fpga_dev_info( int devnum )
129 int ret_val = FPGA_FAIL; /* assume failure */
130 const fpga_desc * const desc = fpga_get_desc( devnum );
133 PRINTF( "%s: Device Descriptor @ 0x%p\n",
134 __FUNCTION__, desc->devdesc );
136 switch ( desc->devtype ) {
138 #if CONFIG_FPGA & CFG_FPGA_XILINX
139 printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc );
140 ret_val = xilinx_info( desc->devdesc );
142 fpga_no_sup( __FUNCTION__, "Xilinx devices" );
146 #if CONFIG_FPGA & CFG_FPGA_ALTERA
147 printf( "Altera Device\nDescriptor @ 0x%p\n", desc );
148 ret_val = altera_info( desc->devdesc );
150 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
154 printf( "%s: Invalid or unsupported device type %d\n",
155 __FUNCTION__, desc->devtype );
158 printf( "%s: Invalid device number %d\n",
159 __FUNCTION__, devnum );
167 * generic multiplexing code
169 int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off )
171 int ret_val = FPGA_FAIL;
173 PRINTF( "%s: Relocating Device of type %d @ 0x%p with offset %lx\n",
174 __FUNCTION__, devtype, desc, reloc_off );
178 #if CONFIG_FPGA & CFG_FPGA_XILINX
179 ret_val = xilinx_reloc( desc, reloc_off );
181 fpga_no_sup( __FUNCTION__, "Xilinx devices" );
185 #if CONFIG_FPGA & CFG_FPGA_ALTERA
186 ret_val = altera_reloc( desc, reloc_off );
188 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
192 printf( "%s: Invalid or unsupported device type %d\n",
193 __FUNCTION__, devtype );
199 /* ------------------------------------------------------------------------- */
200 /* fgpa_init is usually called from misc_init_r() and MUST be called
201 * before any of the other fpga functions are used.
203 void fpga_init( ulong reloc_off )
205 relocation_offset = reloc_off;
207 memset( desc_table, 0, sizeof(desc_table));
209 PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA );
211 PRINTF( "%s: CFG_FPGA_XILINX = 0x%x\n", __FUNCTION__, CFG_FPGA_XILINX );
212 PRINTF( "%s: CFG_FPGA_ALTERA = 0x%x\n", __FUNCTION__, CFG_FPGA_ALTERA );
217 * Basic interface function to get the current number of devices available.
219 int fpga_count( void )
225 * Attempts to relocate the device/board specific interface code
226 * to the proper RAM locations and adds the device descriptor to
229 int fpga_add( fpga_type devtype, void *desc )
231 int devnum = FPGA_INVALID_DEVICE;
233 if ( next_desc < 0 ) {
234 printf( "%s: FPGA support not initialized!\n", __FUNCTION__ );
235 } else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) {
237 if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) {
238 if ( fpga_reloc( devtype, desc, relocation_offset )
241 desc_table[next_desc].devtype = devtype;
242 desc_table[next_desc++].devdesc = desc;
244 printf( "%s: Unable to relocate device interface table!\n",
248 printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ );
251 printf( "%s: NULL device descriptor\n", __FUNCTION__ );
254 printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype );
261 * Generic multiplexing code
263 int fpga_load( int devnum, void *buf, size_t bsize )
265 int ret_val = FPGA_FAIL; /* assume failure */
266 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
269 switch ( desc->devtype ) {
271 #if CONFIG_FPGA & CFG_FPGA_XILINX
272 ret_val = xilinx_load( desc->devdesc, buf, bsize );
274 fpga_no_sup( __FUNCTION__, "Xilinx devices" );
278 #if CONFIG_FPGA & CFG_FPGA_ALTERA
279 ret_val = altera_load( desc->devdesc, buf, bsize );
281 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
285 printf( "%s: Invalid or unsupported device type %d\n",
286 __FUNCTION__, desc->devtype );
294 * generic multiplexing code
296 int fpga_dump( int devnum, void *buf, size_t bsize )
298 int ret_val = FPGA_FAIL; /* assume failure */
299 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
302 switch ( desc->devtype ) {
304 #if CONFIG_FPGA & CFG_FPGA_XILINX
305 ret_val = xilinx_dump( desc->devdesc, buf, bsize );
307 fpga_no_sup( __FUNCTION__, "Xilinx devices" );
311 #if CONFIG_FPGA & CFG_FPGA_ALTERA
312 ret_val = altera_dump( desc->devdesc, buf, bsize );
314 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
318 printf( "%s: Invalid or unsupported device type %d\n",
319 __FUNCTION__, desc->devtype );
328 * front end to fpga_dev_info. If devnum is invalid, report on all
331 int fpga_info( int devnum )
333 if ( devnum == FPGA_INVALID_DEVICE ) {
334 if ( next_desc > 0 ) {
337 for ( dev = 0; dev < next_desc; dev++ ) {
338 fpga_dev_info( dev );
342 printf( "%s: No FPGA devices available.\n", __FUNCTION__ );
346 else return fpga_dev_info( devnum );
349 /* ------------------------------------------------------------------------- */
351 #endif /* CONFIG_FPGA */