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.\n", fn, msg);
72 printf( "No support for %s.\n", msg);
74 printf( "No FPGA suport!\n");
80 * map a device number to a descriptor
82 static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum )
84 fpga_desc *desc = (fpga_desc * )NULL;
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 );
97 * generic parameter checking code
99 static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
100 size_t bsize, char *fn )
102 fpga_desc * desc = fpga_get_desc( devnum );
105 printf( "%s: Invalid device number %d\n", fn, devnum );
109 printf( "%s: Null buffer.\n", fn );
110 return (fpga_desc * const)NULL;
117 * generic multiplexing code
119 static int fpga_dev_info( int devnum )
121 int ret_val = FPGA_FAIL; /* assume failure */
122 const fpga_desc * const desc = fpga_get_desc( devnum );
125 PRINTF( "%s: Device Descriptor @ 0x%p\n",
126 __FUNCTION__, desc->devdesc );
128 switch ( desc->devtype ) {
130 #if defined(CONFIG_FPGA_XILINX)
131 printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc );
132 ret_val = xilinx_info( desc->devdesc );
134 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
138 #if defined(CONFIG_FPGA_ALTERA)
139 printf( "Altera Device\nDescriptor @ 0x%p\n", desc );
140 ret_val = altera_info( desc->devdesc );
142 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
146 printf( "%s: Invalid or unsupported device type %d\n",
147 __FUNCTION__, desc->devtype );
150 printf( "%s: Invalid device number %d\n",
151 __FUNCTION__, devnum );
159 * generic multiplexing code
161 int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off )
163 int ret_val = FPGA_FAIL;
165 PRINTF( "%s: Relocating Device of type %d @ 0x%p with offset %lx\n",
166 __FUNCTION__, devtype, desc, reloc_off );
170 #if defined(CONFIG_FPGA_XILINX)
171 ret_val = xilinx_reloc( desc, reloc_off );
173 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
177 #if defined(CONFIG_FPGA_ALTERA)
178 ret_val = altera_reloc( desc, reloc_off );
180 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
184 printf( "%s: Invalid or unsupported device type %d\n",
185 __FUNCTION__, devtype );
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.
195 void fpga_init( ulong reloc_off )
197 relocation_offset = reloc_off;
199 memset( desc_table, 0, sizeof(desc_table));
201 PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA );
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 );
209 * Basic interface function to get the current number of devices available.
211 int fpga_count( void )
217 * Attempts to relocate the device/board specific interface code
218 * to the proper RAM locations and adds the device descriptor to
221 int fpga_add( fpga_type devtype, void *desc )
223 int devnum = FPGA_INVALID_DEVICE;
225 if ( next_desc < 0 ) {
226 printf( "%s: FPGA support not initialized!\n", __FUNCTION__ );
227 } else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) {
229 if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) {
230 if ( fpga_reloc( devtype, desc, relocation_offset )
233 desc_table[next_desc].devtype = devtype;
234 desc_table[next_desc++].devdesc = desc;
236 printf( "%s: Unable to relocate device interface table!\n",
240 printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ );
243 printf( "%s: NULL device descriptor\n", __FUNCTION__ );
246 printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype );
253 * Generic multiplexing code
255 int fpga_load( int devnum, void *buf, size_t bsize )
257 int ret_val = FPGA_FAIL; /* assume failure */
258 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
261 switch ( desc->devtype ) {
263 #if defined(CONFIG_FPGA_XILINX)
264 ret_val = xilinx_load( desc->devdesc, buf, bsize );
266 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
270 #if defined(CONFIG_FPGA_ALTERA)
271 ret_val = altera_load( desc->devdesc, buf, bsize );
273 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
277 printf( "%s: Invalid or unsupported device type %d\n",
278 __FUNCTION__, desc->devtype );
286 * generic multiplexing code
288 int fpga_dump( int devnum, void *buf, size_t bsize )
290 int ret_val = FPGA_FAIL; /* assume failure */
291 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
294 switch ( desc->devtype ) {
296 #if defined(CONFIG_FPGA_XILINX)
297 ret_val = xilinx_dump( desc->devdesc, buf, bsize );
299 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
303 #if defined(CONFIG_FPGA_ALTERA)
304 ret_val = altera_dump( desc->devdesc, buf, bsize );
306 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
310 printf( "%s: Invalid or unsupported device type %d\n",
311 __FUNCTION__, desc->devtype );
320 * front end to fpga_dev_info. If devnum is invalid, report on all
323 int fpga_info( int devnum )
325 if ( devnum == FPGA_INVALID_DEVICE ) {
326 if ( next_desc > 0 ) {
329 for ( dev = 0; dev < next_desc; dev++ ) {
330 fpga_dev_info( dev );
334 printf( "%s: No FPGA devices available.\n", __FUNCTION__ );
338 else return fpga_dev_info( devnum );
341 /* ------------------------------------------------------------------------- */
343 #endif /* CONFIG_FPGA */