1 /* 2 * (C) Copyright 2006 3 * Heiko Schocher, hs@denx.de 4 * Based on ACE1XK.c 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of 12 * the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 * 24 */ 25 26 #include <common.h> /* core U-Boot definitions */ 27 #include <altera.h> 28 #include <ACEX1K.h> /* ACEX device family */ 29 30 /* Define FPGA_DEBUG to get debug printf's */ 31 #ifdef FPGA_DEBUG 32 #define PRINTF(fmt,args...) printf (fmt ,##args) 33 #else 34 #define PRINTF(fmt,args...) 35 #endif 36 37 /* Note: The assumption is that we cannot possibly run fast enough to 38 * overrun the device (the Slave Parallel mode can free run at 50MHz). 39 * If there is a need to operate slower, define CONFIG_FPGA_DELAY in 40 * the board config file to slow things down. 41 */ 42 #ifndef CONFIG_FPGA_DELAY 43 #define CONFIG_FPGA_DELAY() 44 #endif 45 46 #ifndef CONFIG_SYS_FPGA_WAIT 47 #define CONFIG_SYS_FPGA_WAIT CONFIG_SYS_HZ/10 /* 100 ms */ 48 #endif 49 50 static int CYC2_ps_load( Altera_desc *desc, void *buf, size_t bsize ); 51 static int CYC2_ps_dump( Altera_desc *desc, void *buf, size_t bsize ); 52 /* static int CYC2_ps_info( Altera_desc *desc ); */ 53 static int CYC2_ps_reloc( Altera_desc *desc, ulong reloc_offset ); 54 55 /* ------------------------------------------------------------------------- */ 56 /* CYCLON2 Generic Implementation */ 57 int CYC2_load (Altera_desc * desc, void *buf, size_t bsize) 58 { 59 int ret_val = FPGA_FAIL; 60 61 switch (desc->iface) { 62 case passive_serial: 63 PRINTF ("%s: Launching Passive Serial Loader\n", __FUNCTION__); 64 ret_val = CYC2_ps_load (desc, buf, bsize); 65 break; 66 67 /* Add new interface types here */ 68 69 default: 70 printf ("%s: Unsupported interface type, %d\n", 71 __FUNCTION__, desc->iface); 72 } 73 74 return ret_val; 75 } 76 77 int CYC2_dump (Altera_desc * desc, void *buf, size_t bsize) 78 { 79 int ret_val = FPGA_FAIL; 80 81 switch (desc->iface) { 82 case passive_serial: 83 PRINTF ("%s: Launching Passive Serial Dump\n", __FUNCTION__); 84 ret_val = CYC2_ps_dump (desc, buf, bsize); 85 break; 86 87 /* Add new interface types here */ 88 89 default: 90 printf ("%s: Unsupported interface type, %d\n", 91 __FUNCTION__, desc->iface); 92 } 93 94 return ret_val; 95 } 96 97 int CYC2_info( Altera_desc *desc ) 98 { 99 return FPGA_SUCCESS; 100 } 101 102 int CYC2_reloc (Altera_desc * desc, ulong reloc_offset) 103 { 104 int ret_val = FPGA_FAIL; /* assume a failure */ 105 106 if (desc->family != Altera_CYC2) { 107 printf ("%s: Unsupported family type, %d\n", 108 __FUNCTION__, desc->family); 109 return FPGA_FAIL; 110 } else 111 switch (desc->iface) { 112 case passive_serial: 113 ret_val = CYC2_ps_reloc (desc, reloc_offset); 114 break; 115 116 /* Add new interface types here */ 117 118 default: 119 printf ("%s: Unsupported interface type, %d\n", 120 __FUNCTION__, desc->iface); 121 } 122 123 return ret_val; 124 } 125 126 /* ------------------------------------------------------------------------- */ 127 /* CYCLON2 Passive Serial Generic Implementation */ 128 static int CYC2_ps_load (Altera_desc * desc, void *buf, size_t bsize) 129 { 130 int ret_val = FPGA_FAIL; /* assume the worst */ 131 Altera_CYC2_Passive_Serial_fns *fn = desc->iface_fns; 132 int ret = 0; 133 134 PRINTF ("%s: start with interface functions @ 0x%p\n", 135 __FUNCTION__, fn); 136 137 if (fn) { 138 int cookie = desc->cookie; /* make a local copy */ 139 unsigned long ts; /* timestamp */ 140 141 PRINTF ("%s: Function Table:\n" 142 "ptr:\t0x%p\n" 143 "struct: 0x%p\n" 144 "config:\t0x%p\n" 145 "status:\t0x%p\n" 146 "write:\t0x%p\n" 147 "done:\t0x%p\n\n", 148 __FUNCTION__, &fn, fn, fn->config, fn->status, 149 fn->write, fn->done); 150 #ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK 151 printf ("Loading FPGA Device %d...", cookie); 152 #endif 153 154 /* 155 * Run the pre configuration function if there is one. 156 */ 157 if (*fn->pre) { 158 (*fn->pre) (cookie); 159 } 160 161 /* Establish the initial state */ 162 (*fn->config) (TRUE, TRUE, cookie); /* Assert nCONFIG */ 163 164 udelay(2); /* T_cfg > 2us */ 165 166 /* Wait for nSTATUS to be asserted */ 167 ts = get_timer (0); /* get current time */ 168 do { 169 CONFIG_FPGA_DELAY (); 170 if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */ 171 puts ("** Timeout waiting for STATUS to go high.\n"); 172 (*fn->abort) (cookie); 173 return FPGA_FAIL; 174 } 175 } while (!(*fn->status) (cookie)); 176 177 /* Get ready for the burn */ 178 CONFIG_FPGA_DELAY (); 179 180 ret = (*fn->write) (buf, bsize, TRUE, cookie); 181 if (ret) { 182 puts ("** Write failed.\n"); 183 (*fn->abort) (cookie); 184 return FPGA_FAIL; 185 } 186 #ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK 187 puts(" OK? ..."); 188 #endif 189 190 CONFIG_FPGA_DELAY (); 191 192 #ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK 193 putc (' '); /* terminate the dotted line */ 194 #endif 195 196 /* 197 * Checking FPGA's CONF_DONE signal - correctly booted ? 198 */ 199 200 if ( ! (*fn->done) (cookie) ) { 201 puts ("** Booting failed! CONF_DONE is still deasserted.\n"); 202 (*fn->abort) (cookie); 203 return (FPGA_FAIL); 204 } 205 #ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK 206 puts(" OK\n"); 207 #endif 208 209 ret_val = FPGA_SUCCESS; 210 211 #ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK 212 if (ret_val == FPGA_SUCCESS) { 213 puts ("Done.\n"); 214 } 215 else { 216 puts ("Fail.\n"); 217 } 218 #endif 219 (*fn->post) (cookie); 220 221 } else { 222 printf ("%s: NULL Interface function table!\n", __FUNCTION__); 223 } 224 225 return ret_val; 226 } 227 228 static int CYC2_ps_dump (Altera_desc * desc, void *buf, size_t bsize) 229 { 230 /* Readback is only available through the Slave Parallel and */ 231 /* boundary-scan interfaces. */ 232 printf ("%s: Passive Serial Dumping is unavailable\n", 233 __FUNCTION__); 234 return FPGA_FAIL; 235 } 236 237 static int CYC2_ps_reloc (Altera_desc * desc, ulong reloc_offset) 238 { 239 int ret_val = FPGA_FAIL; /* assume the worst */ 240 Altera_CYC2_Passive_Serial_fns *fn_r, *fn = 241 (Altera_CYC2_Passive_Serial_fns *) (desc->iface_fns); 242 243 if (fn) { 244 ulong addr; 245 246 /* Get the relocated table address */ 247 addr = (ulong) fn + reloc_offset; 248 fn_r = (Altera_CYC2_Passive_Serial_fns *) addr; 249 250 if (!fn_r->relocated) { 251 252 if (memcmp (fn_r, fn, 253 sizeof (Altera_CYC2_Passive_Serial_fns)) 254 == 0) { 255 /* good copy of the table, fix the descriptor pointer */ 256 desc->iface_fns = fn_r; 257 } else { 258 PRINTF ("%s: Invalid function table at 0x%p\n", 259 __FUNCTION__, fn_r); 260 return FPGA_FAIL; 261 } 262 263 PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__, 264 desc); 265 266 addr = (ulong) (fn->pre) + reloc_offset; 267 fn_r->pre = (Altera_pre_fn) addr; 268 269 addr = (ulong) (fn->config) + reloc_offset; 270 fn_r->config = (Altera_config_fn) addr; 271 272 addr = (ulong) (fn->status) + reloc_offset; 273 fn_r->status = (Altera_status_fn) addr; 274 275 addr = (ulong) (fn->done) + reloc_offset; 276 fn_r->done = (Altera_done_fn) addr; 277 278 addr = (ulong) (fn->write) + reloc_offset; 279 fn_r->write = (Altera_write_fn) addr; 280 281 addr = (ulong) (fn->abort) + reloc_offset; 282 fn_r->abort = (Altera_abort_fn) addr; 283 284 addr = (ulong) (fn->post) + reloc_offset; 285 fn_r->post = (Altera_post_fn) addr; 286 287 fn_r->relocated = TRUE; 288 289 } else { 290 /* this table has already been moved */ 291 /* XXX - should check to see if the descriptor is correct */ 292 desc->iface_fns = fn_r; 293 } 294 295 ret_val = FPGA_SUCCESS; 296 } else { 297 printf ("%s: NULL Interface function table!\n", __FUNCTION__); 298 } 299 300 return ret_val; 301 } 302