1 /* 2 * (C) Copyright 2002 3 * Rich Ireland, Enterasys Networks, rireland@enterasys.com. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* Generic FPGA support */ 9 #include <common.h> /* core U-Boot definitions */ 10 #include <xilinx.h> /* xilinx specific definitions */ 11 #include <altera.h> /* altera specific definitions */ 12 #include <lattice.h> 13 14 /* Local definitions */ 15 #ifndef CONFIG_MAX_FPGA_DEVICES 16 #define CONFIG_MAX_FPGA_DEVICES 5 17 #endif 18 19 /* Local static data */ 20 static int next_desc = FPGA_INVALID_DEVICE; 21 static fpga_desc desc_table[CONFIG_MAX_FPGA_DEVICES]; 22 23 /* 24 * fpga_no_sup 25 * 'no support' message function 26 */ 27 static void fpga_no_sup(char *fn, char *msg) 28 { 29 if (fn && msg) 30 printf("%s: No support for %s.\n", fn, msg); 31 else if (msg) 32 printf("No support for %s.\n", msg); 33 else 34 printf("No FPGA suport!\n"); 35 } 36 37 38 /* fpga_get_desc 39 * map a device number to a descriptor 40 */ 41 static const fpga_desc *const fpga_get_desc(int devnum) 42 { 43 fpga_desc *desc = (fpga_desc *)NULL; 44 45 if ((devnum >= 0) && (devnum < next_desc)) { 46 desc = &desc_table[devnum]; 47 debug("%s: found fpga descriptor #%d @ 0x%p\n", 48 __func__, devnum, desc); 49 } 50 51 return desc; 52 } 53 54 /* 55 * fpga_validate 56 * generic parameter checking code 57 */ 58 const fpga_desc *const fpga_validate(int devnum, const void *buf, 59 size_t bsize, char *fn) 60 { 61 const fpga_desc *desc = fpga_get_desc(devnum); 62 63 if (!desc) 64 printf("%s: Invalid device number %d\n", fn, devnum); 65 66 if (!buf) { 67 printf("%s: Null buffer.\n", fn); 68 return (fpga_desc * const)NULL; 69 } 70 return desc; 71 } 72 73 /* 74 * fpga_dev_info 75 * generic multiplexing code 76 */ 77 static int fpga_dev_info(int devnum) 78 { 79 int ret_val = FPGA_FAIL; /* assume failure */ 80 const fpga_desc * const desc = fpga_get_desc(devnum); 81 82 if (desc) { 83 debug("%s: Device Descriptor @ 0x%p\n", 84 __func__, desc->devdesc); 85 86 switch (desc->devtype) { 87 case fpga_xilinx: 88 #if defined(CONFIG_FPGA_XILINX) 89 printf("Xilinx Device\nDescriptor @ 0x%p\n", desc); 90 ret_val = xilinx_info(desc->devdesc); 91 #else 92 fpga_no_sup((char *)__func__, "Xilinx devices"); 93 #endif 94 break; 95 case fpga_altera: 96 #if defined(CONFIG_FPGA_ALTERA) 97 printf("Altera Device\nDescriptor @ 0x%p\n", desc); 98 ret_val = altera_info(desc->devdesc); 99 #else 100 fpga_no_sup((char *)__func__, "Altera devices"); 101 #endif 102 break; 103 case fpga_lattice: 104 #if defined(CONFIG_FPGA_LATTICE) 105 printf("Lattice Device\nDescriptor @ 0x%p\n", desc); 106 ret_val = lattice_info(desc->devdesc); 107 #else 108 fpga_no_sup((char *)__func__, "Lattice devices"); 109 #endif 110 break; 111 default: 112 printf("%s: Invalid or unsupported device type %d\n", 113 __func__, desc->devtype); 114 } 115 } else { 116 printf("%s: Invalid device number %d\n", __func__, devnum); 117 } 118 119 return ret_val; 120 } 121 122 /* 123 * fgpa_init is usually called from misc_init_r() and MUST be called 124 * before any of the other fpga functions are used. 125 */ 126 void fpga_init(void) 127 { 128 next_desc = 0; 129 memset(desc_table, 0, sizeof(desc_table)); 130 131 debug("%s\n", __func__); 132 } 133 134 /* 135 * fpga_count 136 * Basic interface function to get the current number of devices available. 137 */ 138 int fpga_count(void) 139 { 140 return next_desc; 141 } 142 143 /* 144 * fpga_add 145 * Add the device descriptor to the device table. 146 */ 147 int fpga_add(fpga_type devtype, void *desc) 148 { 149 int devnum = FPGA_INVALID_DEVICE; 150 151 if (next_desc < 0) { 152 printf("%s: FPGA support not initialized!\n", __func__); 153 } else if ((devtype > fpga_min_type) && (devtype < fpga_undefined)) { 154 if (desc) { 155 if (next_desc < CONFIG_MAX_FPGA_DEVICES) { 156 devnum = next_desc; 157 desc_table[next_desc].devtype = devtype; 158 desc_table[next_desc++].devdesc = desc; 159 } else { 160 printf("%s: Exceeded Max FPGA device count\n", 161 __func__); 162 } 163 } else { 164 printf("%s: NULL device descriptor\n", __func__); 165 } 166 } else { 167 printf("%s: Unsupported FPGA type %d\n", __func__, devtype); 168 } 169 170 return devnum; 171 } 172 173 /* 174 * Convert bitstream data and load into the fpga 175 */ 176 int __weak fpga_loadbitstream(int devnum, char *fpgadata, size_t size) 177 { 178 printf("Bitstream support not implemented for this FPGA device\n"); 179 return FPGA_FAIL; 180 } 181 182 /* 183 * Generic multiplexing code 184 */ 185 int fpga_load(int devnum, const void *buf, size_t bsize) 186 { 187 int ret_val = FPGA_FAIL; /* assume failure */ 188 const fpga_desc *desc = fpga_validate(devnum, buf, bsize, 189 (char *)__func__); 190 191 if (desc) { 192 switch (desc->devtype) { 193 case fpga_xilinx: 194 #if defined(CONFIG_FPGA_XILINX) 195 ret_val = xilinx_load(desc->devdesc, buf, bsize); 196 #else 197 fpga_no_sup((char *)__func__, "Xilinx devices"); 198 #endif 199 break; 200 case fpga_altera: 201 #if defined(CONFIG_FPGA_ALTERA) 202 ret_val = altera_load(desc->devdesc, buf, bsize); 203 #else 204 fpga_no_sup((char *)__func__, "Altera devices"); 205 #endif 206 break; 207 case fpga_lattice: 208 #if defined(CONFIG_FPGA_LATTICE) 209 ret_val = lattice_load(desc->devdesc, buf, bsize); 210 #else 211 fpga_no_sup((char *)__func__, "Lattice devices"); 212 #endif 213 break; 214 default: 215 printf("%s: Invalid or unsupported device type %d\n", 216 __func__, desc->devtype); 217 } 218 } 219 220 return ret_val; 221 } 222 223 /* 224 * fpga_dump 225 * generic multiplexing code 226 */ 227 int fpga_dump(int devnum, const void *buf, size_t bsize) 228 { 229 int ret_val = FPGA_FAIL; /* assume failure */ 230 const fpga_desc *desc = fpga_validate(devnum, buf, bsize, 231 (char *)__func__); 232 233 if (desc) { 234 switch (desc->devtype) { 235 case fpga_xilinx: 236 #if defined(CONFIG_FPGA_XILINX) 237 ret_val = xilinx_dump(desc->devdesc, buf, bsize); 238 #else 239 fpga_no_sup((char *)__func__, "Xilinx devices"); 240 #endif 241 break; 242 case fpga_altera: 243 #if defined(CONFIG_FPGA_ALTERA) 244 ret_val = altera_dump(desc->devdesc, buf, bsize); 245 #else 246 fpga_no_sup((char *)__func__, "Altera devices"); 247 #endif 248 break; 249 case fpga_lattice: 250 #if defined(CONFIG_FPGA_LATTICE) 251 ret_val = lattice_dump(desc->devdesc, buf, bsize); 252 #else 253 fpga_no_sup((char *)__func__, "Lattice devices"); 254 #endif 255 break; 256 default: 257 printf("%s: Invalid or unsupported device type %d\n", 258 __func__, desc->devtype); 259 } 260 } 261 262 return ret_val; 263 } 264 265 /* 266 * fpga_info 267 * front end to fpga_dev_info. If devnum is invalid, report on all 268 * available devices. 269 */ 270 int fpga_info(int devnum) 271 { 272 if (devnum == FPGA_INVALID_DEVICE) { 273 if (next_desc > 0) { 274 int dev; 275 276 for (dev = 0; dev < next_desc; dev++) 277 fpga_dev_info(dev); 278 279 return FPGA_SUCCESS; 280 } else { 281 printf("%s: No FPGA devices available.\n", __func__); 282 return FPGA_FAIL; 283 } 284 } 285 286 return fpga_dev_info(devnum); 287 } 288