board/esd/tasreg/tasreg.c

   1 /*
   2  * (C) Copyright 2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   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 #include <common.h>
  25 #include <command.h>
  26 #include <malloc.h>
  27 #include <asm/m5249.h>
  28
  29
  30 /* Prototypes */
  31 int gunzip(void *, int, unsigned char *, unsigned long *);
  32 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  33 int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len);
  34 int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len);
  35
  36
  37 #if 0
  38 #define FPGA_DEBUG
  39 #endif
  40
  41 /* predefine these here for FPGA programming (before including fpga.c) */
  42 #define SET_FPGA(data)  mbar2_writeLong(MCFSIM_GPIO1_OUT, data)
  43 #define FPGA_DONE_STATE (mbar2_readLong(MCFSIM_GPIO1_READ) & CONFIG_SYS_FPGA_DONE)
  44 #define FPGA_INIT_STATE (mbar2_readLong(MCFSIM_GPIO1_READ) & CONFIG_SYS_FPGA_INIT)
  45 #define FPGA_PROG_ACTIVE_HIGH          /* on this platform is PROG active high!   */
  46 #define out32(a,b)                     /* nothing to do (gpio already configured) */
  47
  48
  49 /* fpga configuration data - generated by bin2cc */
  50 const unsigned char fpgadata[] =
  51 {
  52 #include "fpgadata.c"
  53 };
  54
  55 /*
  56  * include common fpga code (for esd boards)
  57  */
  58 #include "../common/fpga.c"
  59
  60
  61 int checkboard (void) {
  62         ulong val;
  63         uchar val8;
  64
  65         puts ("Board: ");
  66         puts("esd TASREG");
  67         val8 = ((uchar)~((uchar)mbar2_readLong(MCFSIM_GPIO1_READ) >> 4)) & 0xf;
  68         printf(" (Switch=%1X)\n", val8);
  69
  70         /*
  71          * Set LED on
  72          */
  73         val = mbar2_readLong(MCFSIM_GPIO1_OUT) & ~CONFIG_SYS_GPIO1_LED;
  74         mbar2_writeLong(MCFSIM_GPIO1_OUT, val);   /* Set LED on */
  75
  76         return 0;
  77 };
  78
  79
  80 phys_size_t initdram (int board_type) {
  81         unsigned long   junk = 0xa5a59696;
  82
  83         /*
  84          *  Note:
  85          *      RC = ([(RefreshTime/#rows) / (1/BusClk)] / 16) - 1
  86          */
  87
  88 #ifdef CONFIG_SYS_FAST_CLK
  89         /*
  90          * Busclk=70MHz, RefreshTime=64ms, #rows=4096 (4K)
  91          * SO=1, NAM=0, COC=0, RTIM=01 (6clk refresh), RC=39
  92          */
  93         mbar_writeShort(MCFSIM_DCR, 0x8239);
  94 #elif CONFIG_SYS_PLL_BYPASS
  95         /*
  96          * Busclk=5.6448MHz, RefreshTime=64ms, #rows=8192 (8K)
  97          * SO=1, NAM=0, COC=0, RTIM=01 (6clk refresh), RC=02
  98          */
  99         mbar_writeShort(MCFSIM_DCR, 0x8202);
 100 #else
 101         /*
 102          * Busclk=36MHz, RefreshTime=64ms, #rows=4096 (4K)
 103          * SO=1, NAM=0, COC=0, RTIM=01 (6clk refresh), RC=22 (562 bus clock cycles)
 104          */
 105         mbar_writeShort(MCFSIM_DCR, 0x8222);
 106 #endif
 107
 108         /*
 109          * SDRAM starts at 0x0000_0000, CASL=10, CBM=010, PS=10 (16bit port),
 110          * PM=1 (continuous page mode)
 111          */
 112
 113         /* RE=0 (keep auto-refresh disabled while setting up registers) */
 114         mbar_writeLong(MCFSIM_DACR0, 0x00003324);
 115
 116         /* BAM=007c (bits 22,21 are bank selects; 256kB blocks) */
 117         mbar_writeLong(MCFSIM_DMR0, 0x01fc0001);
 118
 119         /** Precharge sequence **/
 120         mbar_writeLong(MCFSIM_DACR0, 0x0000332c); /* Set DACR0[IP] (bit 3) */
 121         *((volatile unsigned long *) 0x00) = junk; /* write to a memory location to init. precharge */
 122         udelay(0x10); /* Allow several Precharge cycles */
 123
 124         /** Refresh Sequence **/
 125         mbar_writeLong(MCFSIM_DACR0, 0x0000b324); /* Enable the refresh bit, DACR0[RE] (bit 15) */
 126         udelay(0x7d0); /* Allow gobs of refresh cycles */
 127
 128         /** Mode Register initialization **/
 129         mbar_writeLong(MCFSIM_DACR0, 0x0000b364);  /* Enable DACR0[IMRS] (bit 6); RE remains enabled */
 130         *((volatile unsigned long *) 0x800) = junk; /* Access RAM to initialize the mode register */
 131
 132         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 133 };
 134
 135
 136 int testdram (void) {
 137         /* TODO: XXX XXX XXX */
 138         printf ("DRAM test not implemented!\n");
 139
 140         return (0);
 141 }
 142
 143
 144 int misc_init_r (void)
 145 {
 146         unsigned char *dst;
 147         ulong len = sizeof(fpgadata);
 148         int status;
 149         int index;
 150         int i;
 151         uchar buf[8];
 152
 153         dst = malloc(CONFIG_SYS_FPGA_MAX_SIZE);
 154         if (gunzip (dst, CONFIG_SYS_FPGA_MAX_SIZE, (uchar *)fpgadata, &len) != 0) {
 155                 printf ("GUNZIP ERROR - must RESET board to recover\n");
 156                 do_reset (NULL, 0, 0, NULL);
 157         }
 158
 159         status = fpga_boot(dst, len);
 160         if (status != 0) {
 161                 printf("\nFPGA: Booting failed ");
 162                 switch (status) {
 163                 case ERROR_FPGA_PRG_INIT_LOW:
 164                         printf("(Timeout: INIT not low after asserting PROGRAM*)\n ");
 165                         break;
 166                 case ERROR_FPGA_PRG_INIT_HIGH:
 167                         printf("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
 168                         break;
 169                 case ERROR_FPGA_PRG_DONE:
 170                         printf("(Timeout: DONE not high after programming FPGA)\n ");
 171                         break;
 172                 }
 173
 174                 /* display infos on fpgaimage */
 175                 index = 15;
 176                 for (i=0; i<4; i++) {
 177                         len = dst[index];
 178                         printf("FPGA: %s\n", &(dst[index+1]));
 179                         index += len+3;
 180                 }
 181                 putc ('\n');
 182                 /* delayed reboot */
 183                 for (i=20; i>0; i--) {
 184                         printf("Rebooting in %2d seconds \r",i);
 185                         for (index=0;index<1000;index++)
 186                                 udelay(1000);
 187                 }
 188                 putc ('\n');
 189                 do_reset(NULL, 0, 0, NULL);
 190         }
 191
 192         puts("FPGA:  ");
 193
 194         /* display infos on fpgaimage */
 195         index = 15;
 196         for (i=0; i<4; i++) {
 197                 len = dst[index];
 198                 printf("%s ", &(dst[index+1]));
 199                 index += len+3;
 200         }
 201         putc ('\n');
 202
 203         free(dst);
 204
 205         /*
 206          *
 207          */
 208         buf[0] = 0x00;
 209         buf[1] = 0x32;
 210         buf[2] = 0x3f;
 211         i2c_write(0x38, 0, 0, buf, 3);
 212
 213         return (0);
 214 }
 215
 216
 217 #if 1 /* test-only: board specific test commands */
 218 int i2c_probe(uchar addr);
 219
 220 /*
 221  */
 222 int do_iploop(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 223 {
 224         ulong addr;
 225
 226         if (argc < 2) {
 227                 puts("ERROR!\n");
 228                 return -1;
 229         }
 230
 231         addr = simple_strtol (argv[1], NULL, 16);
 232
 233         printf("iprobe looping on addr 0x%lx (cntrl-c aborts)...\n", addr);
 234
 235         for (;;) {
 236                 i2c_probe(addr);
 237
 238                 /* Abort if ctrl-c was pressed */
 239                 if (ctrlc()) {
 240                         puts("\nAbort\n");
 241                         return 0;
 242                 }
 243
 244                 udelay(1000);
 245         }
 246
 247         return 0;
 248 }
 249 U_BOOT_CMD(
 250         iploop, 2,      1,      do_iploop,
 251         "iploop - iprobe loop <addr>\n",
 252         NULL
 253         );
 254
 255 /*
 256  */
 257 int do_codec(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 258 {
 259         uchar buf[8];
 260
 261         *(volatile ushort *)0xe0000000 = 0x4000;
 262
 263         udelay(5000); /* wait for 5ms */
 264
 265         buf[0] = 0x10;
 266         buf[1] = 0x07;
 267         buf[2] = 0x03;
 268         i2c_write(0x10, 0, 0, buf, 3);
 269
 270         buf[0] = 0x10;
 271         buf[1] = 0x01;
 272         buf[2] = 0x80;
 273         i2c_write(0x10, 0, 0, buf, 3);
 274
 275         buf[0] = 0x10;
 276         buf[1] = 0x02;
 277         buf[2] = 0x03;
 278         i2c_write(0x10, 0, 0, buf, 3);
 279
 280         buf[0] = 0x10;
 281         buf[1] = 0x03;
 282         buf[2] = 0x29;
 283         i2c_write(0x10, 0, 0, buf, 3);
 284
 285         buf[0] = 0x10;
 286         buf[1] = 0x04;
 287         buf[2] = 0x00;
 288         i2c_write(0x10, 0, 0, buf, 3);
 289
 290         buf[0] = 0x10;
 291         buf[1] = 0x05;
 292         buf[2] = 0x00;
 293         i2c_write(0x10, 0, 0, buf, 3);
 294
 295         buf[0] = 0x10;
 296         buf[1] = 0x07;
 297         buf[2] = 0x02;
 298         i2c_write(0x10, 0, 0, buf, 3);
 299
 300         return 0;
 301 }
 302 U_BOOT_CMD(
 303         codec,  1,      1,      do_codec,
 304         "codec - Enable codec\n",
 305         NULL
 306         );
 307
 308 /*
 309  */
 310 int do_saa(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 311 {
 312         ulong addr;
 313         ulong instr;
 314         ulong cntrl;
 315         ulong data;
 316         uchar buf[8];
 317
 318         if (argc < 5) {
 319                 puts("ERROR!\n");
 320                 return -1;
 321         }
 322
 323         addr = simple_strtol (argv[1], NULL, 16);
 324         instr = simple_strtol (argv[2], NULL, 16);
 325         cntrl = simple_strtol (argv[3], NULL, 16);
 326         data = simple_strtol (argv[4], NULL, 16);
 327
 328         buf[0] = (uchar)instr;
 329         buf[1] = (uchar)cntrl;
 330         buf[2] = (uchar)data;
 331         i2c_write(addr, 0, 0, buf, 3);
 332
 333         return 0;
 334 }
 335 U_BOOT_CMD(
 336         saa,    5,      1,      do_saa,
 337         "saa    - Write to SAA1064 <addr> <instr> <cntrl> <data>\n",
 338         NULL
 339         );
 340
 341 /*
 342  */
 343 int do_iwrite(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 344 {
 345         ulong addr;
 346         ulong data0;
 347         ulong data1;
 348         ulong data2;
 349         ulong data3;
 350         uchar buf[8];
 351         int cnt;
 352
 353         if (argc < 3) {
 354                 puts("ERROR!\n");
 355                 return -1;
 356         }
 357
 358         addr = simple_strtol (argv[1], NULL, 16);
 359         cnt = simple_strtol (argv[2], NULL, 16);
 360         data0 = simple_strtol (argv[3], NULL, 16);
 361         data1 = simple_strtol (argv[4], NULL, 16);
 362         data2 = simple_strtol (argv[5], NULL, 16);
 363         data3 = simple_strtol (argv[6], NULL, 16);
 364
 365         printf("Writing %d bytes to device %lx!\n", cnt, addr);
 366         buf[0] = (uchar)data0;
 367         buf[1] = (uchar)data1;
 368         buf[2] = (uchar)data2;
 369         buf[3] = (uchar)data3;
 370         i2c_write(addr, 0, 0, buf, cnt);
 371
 372         return 0;
 373 }
 374 U_BOOT_CMD(
 375         iwrite, 6,      1,      do_iwrite,
 376         "iwrite - Write n bytes to I2C-device\n",
 377         "addr cnt data0 ... datan\n"
 378         );
 379
 380 /*
 381  */
 382 int do_iread(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 383 {
 384         ulong addr;
 385         ulong cnt;
 386         uchar buf[32];
 387         int i;
 388
 389         if (argc < 3) {
 390                 puts("ERROR!\n");
 391                 return -1;
 392         }
 393
 394         addr = simple_strtol (argv[1], NULL, 16);
 395         cnt = simple_strtol (argv[2], NULL, 16);
 396
 397         i2c_read(addr, 0, 0, buf, cnt);
 398         printf("I2C Data:");
 399         for (i=0; i<cnt; i++) {
 400                 printf(" %02X", buf[i]);
 401         }
 402         printf("\n");
 403
 404         return 0;
 405 }
 406 U_BOOT_CMD(
 407         iread,  3,      1,      do_iread,
 408         "iread  - Read from I2C <addr> <cnt>\n",
 409         NULL
 410         );
 411
 412 /*
 413  */
 414 int do_ireadl(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 415 {
 416         ulong addr;
 417         uchar buf[32];
 418         int cnt;
 419
 420         if (argc < 2) {
 421                 puts("ERROR!\n");
 422                 return -1;
 423         }
 424
 425         addr = simple_strtol (argv[1], NULL, 16);
 426         cnt = 1;
 427
 428         printf("iread looping on addr 0x%lx (cntrl-c aborts)...\n", addr);
 429
 430         for (;;) {
 431                 i2c_read(addr, 0, 0, buf, cnt);
 432
 433                 /* Abort if ctrl-c was pressed */
 434                 if (ctrlc()) {
 435                         puts("\nAbort\n");
 436                         return 0;
 437                 }
 438
 439                 udelay(3000);
 440         }
 441
 442         return 0;
 443 }
 444 U_BOOT_CMD(
 445         ireadl, 2,      1,      do_ireadl,
 446         "ireadl - Read-loop from I2C <addr>\n",
 447         NULL
 448         );
 449 #endif