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