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 printf("Lattice Device\nDescriptor @ 0x%p\n", desc); 145 ret_val = lattice_info(desc->devdesc); 146 break; 147 default: 148 printf( "%s: Invalid or unsupported device type %d\n", 149 __FUNCTION__, desc->devtype ); 150 } 151 } else { 152 printf( "%s: Invalid device number %d\n", 153 __FUNCTION__, devnum ); 154 } 155 156 return ret_val; 157 } 158 159 160 /* ------------------------------------------------------------------------- */ 161 /* fgpa_init is usually called from misc_init_r() and MUST be called 162 * before any of the other fpga functions are used. 163 */ 164 void fpga_init(void) 165 { 166 next_desc = 0; 167 memset( desc_table, 0, sizeof(desc_table)); 168 169 PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA ); 170 } 171 172 /* fpga_count 173 * Basic interface function to get the current number of devices available. 174 */ 175 int fpga_count( void ) 176 { 177 return next_desc; 178 } 179 180 /* fpga_add 181 * Add the device descriptor to the device table. 182 */ 183 int fpga_add( fpga_type devtype, void *desc ) 184 { 185 int devnum = FPGA_INVALID_DEVICE; 186 187 if ( next_desc < 0 ) { 188 printf( "%s: FPGA support not initialized!\n", __FUNCTION__ ); 189 } else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) { 190 if ( desc ) { 191 if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) { 192 devnum = next_desc; 193 desc_table[next_desc].devtype = devtype; 194 desc_table[next_desc++].devdesc = desc; 195 } else { 196 printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ ); 197 } 198 } else { 199 printf( "%s: NULL device descriptor\n", __FUNCTION__ ); 200 } 201 } else { 202 printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype ); 203 } 204 205 return devnum; 206 } 207 208 /* 209 * Generic multiplexing code 210 */ 211 int fpga_load( int devnum, void *buf, size_t bsize ) 212 { 213 int ret_val = FPGA_FAIL; /* assume failure */ 214 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ ); 215 216 if ( desc ) { 217 switch ( desc->devtype ) { 218 case fpga_xilinx: 219 #if defined(CONFIG_FPGA_XILINX) 220 ret_val = xilinx_load( desc->devdesc, buf, bsize ); 221 #else 222 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); 223 #endif 224 break; 225 case fpga_altera: 226 #if defined(CONFIG_FPGA_ALTERA) 227 ret_val = altera_load( desc->devdesc, buf, bsize ); 228 #else 229 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); 230 #endif 231 break; 232 case fpga_lattice: 233 ret_val = lattice_load(desc->devdesc, buf, bsize); 234 break; 235 default: 236 printf( "%s: Invalid or unsupported device type %d\n", 237 __FUNCTION__, desc->devtype ); 238 } 239 } 240 241 return ret_val; 242 } 243 244 /* fpga_dump 245 * generic multiplexing code 246 */ 247 int fpga_dump( int devnum, void *buf, size_t bsize ) 248 { 249 int ret_val = FPGA_FAIL; /* assume failure */ 250 fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ ); 251 252 if ( desc ) { 253 switch ( desc->devtype ) { 254 case fpga_xilinx: 255 #if defined(CONFIG_FPGA_XILINX) 256 ret_val = xilinx_dump( desc->devdesc, buf, bsize ); 257 #else 258 fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" ); 259 #endif 260 break; 261 case fpga_altera: 262 #if defined(CONFIG_FPGA_ALTERA) 263 ret_val = altera_dump( desc->devdesc, buf, bsize ); 264 #else 265 fpga_no_sup( (char *)__FUNCTION__, "Altera devices" ); 266 #endif 267 break; 268 case fpga_lattice: 269 ret_val = lattice_dump(desc->devdesc, buf, bsize); 270 break; 271 default: 272 printf( "%s: Invalid or unsupported device type %d\n", 273 __FUNCTION__, desc->devtype ); 274 } 275 } 276 277 return ret_val; 278 } 279 280 281 /* fpga_info 282 * front end to fpga_dev_info. If devnum is invalid, report on all 283 * available devices. 284 */ 285 int fpga_info( int devnum ) 286 { 287 if ( devnum == FPGA_INVALID_DEVICE ) { 288 if ( next_desc > 0 ) { 289 int dev; 290 291 for ( dev = 0; dev < next_desc; dev++ ) { 292 fpga_dev_info( dev ); 293 } 294 return FPGA_SUCCESS; 295 } else { 296 printf( "%s: No FPGA devices available.\n", __FUNCTION__ ); 297 return FPGA_FAIL; 298 } 299 } 300 else return fpga_dev_info( devnum ); 301 } 302 303 /* ------------------------------------------------------------------------- */ 304