drivers/fpga/xilinx.c

   1 /*
   2  * (C) Copyright 2012-2013, Xilinx, Michal Simek
   3  *
   4  * (C) Copyright 2002
   5  * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
   6  * Keith Outwater, keith_outwater@mvis.com
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 /*
  12  *  Xilinx FPGA support
  13  */
  14
  15 #include <common.h>
  16 #include <fpga.h>
  17 #include <virtex2.h>
  18 #include <spartan2.h>
  19 #include <spartan3.h>
  20 #include <zynqpl.h>
  21
  22 /* Local Static Functions */
  23 static int xilinx_validate(xilinx_desc *desc, char *fn);
  24
  25 /* ------------------------------------------------------------------------- */
  26
  27 int fpga_loadbitstream(int devnum, char *fpgadata, size_t size,
  28                        bitstream_type bstype)
  29 {
  30         unsigned int length;
  31         unsigned int swapsize;
  32         char buffer[80];
  33         unsigned char *dataptr;
  34         unsigned int i;
  35         const fpga_desc *desc;
  36         xilinx_desc *xdesc;
  37
  38         dataptr = (unsigned char *)fpgadata;
  39         /* Find out fpga_description */
  40         desc = fpga_validate(devnum, dataptr, 0, (char *)__func__);
  41         /* Assign xilinx device description */
  42         xdesc = desc->devdesc;
  43
  44         /* skip the first bytes of the bitsteam, their meaning is unknown */
  45         length = (*dataptr << 8) + *(dataptr + 1);
  46         dataptr += 2;
  47         dataptr += length;
  48
  49         /* get design name (identifier, length, string) */
  50         length = (*dataptr << 8) + *(dataptr + 1);
  51         dataptr += 2;
  52         if (*dataptr++ != 0x61) {
  53                 debug("%s: Design name id not recognized in bitstream\n",
  54                       __func__);
  55                 return FPGA_FAIL;
  56         }
  57
  58         length = (*dataptr << 8) + *(dataptr + 1);
  59         dataptr += 2;
  60         for (i = 0; i < length; i++)
  61                 buffer[i] = *dataptr++;
  62
  63         printf("  design filename = \"%s\"\n", buffer);
  64
  65         /* get part number (identifier, length, string) */
  66         if (*dataptr++ != 0x62) {
  67                 printf("%s: Part number id not recognized in bitstream\n",
  68                        __func__);
  69                 return FPGA_FAIL;
  70         }
  71
  72         length = (*dataptr << 8) + *(dataptr + 1);
  73         dataptr += 2;
  74         for (i = 0; i < length; i++)
  75                 buffer[i] = *dataptr++;
  76
  77         if (xdesc->name) {
  78                 i = strncmp(buffer, xdesc->name, strlen(xdesc->name));
  79                 if (i) {
  80                         printf("%s: Wrong bitstream ID for this device\n",
  81                                __func__);
  82                         printf("%s: Bitstream ID %s, current device ID %d/%s\n",
  83                                __func__, buffer, devnum, xdesc->name);
  84                         return FPGA_FAIL;
  85                 }
  86         } else {
  87                 printf("%s: Please fill correct device ID to xilinx_desc\n",
  88                        __func__);
  89         }
  90         printf("  part number = \"%s\"\n", buffer);
  91
  92         /* get date (identifier, length, string) */
  93         if (*dataptr++ != 0x63) {
  94                 printf("%s: Date identifier not recognized in bitstream\n",
  95                        __func__);
  96                 return FPGA_FAIL;
  97         }
  98
  99         length = (*dataptr << 8) + *(dataptr+1);
 100         dataptr += 2;
 101         for (i = 0; i < length; i++)
 102                 buffer[i] = *dataptr++;
 103         printf("  date = \"%s\"\n", buffer);
 104
 105         /* get time (identifier, length, string) */
 106         if (*dataptr++ != 0x64) {
 107                 printf("%s: Time identifier not recognized in bitstream\n",
 108                        __func__);
 109                 return FPGA_FAIL;
 110         }
 111
 112         length = (*dataptr << 8) + *(dataptr+1);
 113         dataptr += 2;
 114         for (i = 0; i < length; i++)
 115                 buffer[i] = *dataptr++;
 116         printf("  time = \"%s\"\n", buffer);
 117
 118         /* get fpga data length (identifier, length) */
 119         if (*dataptr++ != 0x65) {
 120                 printf("%s: Data length id not recognized in bitstream\n",
 121                        __func__);
 122                 return FPGA_FAIL;
 123         }
 124         swapsize = ((unsigned int) *dataptr << 24) +
 125                    ((unsigned int) *(dataptr + 1) << 16) +
 126                    ((unsigned int) *(dataptr + 2) << 8) +
 127                    ((unsigned int) *(dataptr + 3));
 128         dataptr += 4;
 129         printf("  bytes in bitstream = %d\n", swapsize);
 130
 131         return fpga_load(devnum, dataptr, swapsize, bstype);
 132 }
 133
 134 int xilinx_load(xilinx_desc *desc, const void *buf, size_t bsize,
 135                 bitstream_type bstype)
 136 {
 137         if (!xilinx_validate (desc, (char *)__FUNCTION__)) {
 138                 printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 139                 return FPGA_FAIL;
 140         }
 141
 142         return desc->operations->load(desc, buf, bsize, bstype);
 143 }
 144
 145 int xilinx_dump(xilinx_desc *desc, const void *buf, size_t bsize)
 146 {
 147         if (!xilinx_validate (desc, (char *)__FUNCTION__)) {
 148                 printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 149                 return FPGA_FAIL;
 150         }
 151
 152         return desc->operations->dump(desc, buf, bsize);
 153 }
 154
 155 int xilinx_info(xilinx_desc *desc)
 156 {
 157         int ret_val = FPGA_FAIL;
 158
 159         if (xilinx_validate (desc, (char *)__FUNCTION__)) {
 160                 printf ("Family:        \t");
 161                 switch (desc->family) {
 162                 case xilinx_spartan2:
 163                         printf ("Spartan-II\n");
 164                         break;
 165                 case xilinx_spartan3:
 166                         printf ("Spartan-III\n");
 167                         break;
 168                 case xilinx_virtex2:
 169                         printf ("Virtex-II\n");
 170                         break;
 171                 case xilinx_zynq:
 172                         printf("Zynq PL\n");
 173                         break;
 174                         /* Add new family types here */
 175                 default:
 176                         printf ("Unknown family type, %d\n", desc->family);
 177                 }
 178
 179                 printf ("Interface type:\t");
 180                 switch (desc->iface) {
 181                 case slave_serial:
 182                         printf ("Slave Serial\n");
 183                         break;
 184                 case master_serial:     /* Not used */
 185                         printf ("Master Serial\n");
 186                         break;
 187                 case slave_parallel:
 188                         printf ("Slave Parallel\n");
 189                         break;
 190                 case jtag_mode:         /* Not used */
 191                         printf ("JTAG Mode\n");
 192                         break;
 193                 case slave_selectmap:
 194                         printf ("Slave SelectMap Mode\n");
 195                         break;
 196                 case master_selectmap:
 197                         printf ("Master SelectMap Mode\n");
 198                         break;
 199                 case devcfg:
 200                         printf("Device configuration interface (Zynq)\n");
 201                         break;
 202                         /* Add new interface types here */
 203                 default:
 204                         printf ("Unsupported interface type, %d\n", desc->iface);
 205                 }
 206
 207                 printf ("Device Size:   \t%d bytes\n"
 208                                 "Cookie:        \t0x%x (%d)\n",
 209                                 desc->size, desc->cookie, desc->cookie);
 210                 if (desc->name)
 211                         printf("Device name:   \t%s\n", desc->name);
 212
 213                 if (desc->iface_fns) {
 214                         printf ("Device Function Table @ 0x%p\n", desc->iface_fns);
 215                         desc->operations->info(desc);
 216                 } else
 217                         printf ("No Device Function Table.\n");
 218
 219                 ret_val = FPGA_SUCCESS;
 220         } else {
 221                 printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 222         }
 223
 224         return ret_val;
 225 }
 226
 227 /* ------------------------------------------------------------------------- */
 228
 229 static int xilinx_validate(xilinx_desc *desc, char *fn)
 230 {
 231         int ret_val = false;
 232
 233         if (desc) {
 234                 if ((desc->family > min_xilinx_type) &&
 235                         (desc->family < max_xilinx_type)) {
 236                         if ((desc->iface > min_xilinx_iface_type) &&
 237                                 (desc->iface < max_xilinx_iface_type)) {
 238                                 if (desc->size) {
 239                                         ret_val = true;
 240                                 } else
 241                                         printf ("%s: NULL part size\n", fn);
 242                         } else
 243                                 printf ("%s: Invalid Interface type, %d\n",
 244                                                 fn, desc->iface);
 245                 } else
 246                         printf ("%s: Invalid family type, %d\n", fn, desc->family);
 247         } else
 248                 printf ("%s: NULL descriptor!\n", fn);
 249
 250         return ret_val;
 251 }