board/hermes/hermes.c

   1 /*
   2  * (C) Copyright 2000
   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 <commproc.h>
  26 #include <mpc8xx.h>
  27
  28 #ifdef CONFIG_SHOW_BOOT_PROGRESS
  29 # include <status_led.h>
  30 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
  31 #else
  32 # define SHOW_BOOT_PROGRESS(arg)
  33 #endif
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 /* ------------------------------------------------------------------------- */
  38
  39 static long int dram_size (long int, long int *, long int);
  40 static ulong board_init (void);
  41 static void send_smi_frame (volatile scc_t * sp, volatile cbd_t * bd,
  42                                                         uchar * msg);
  43
  44 /* ------------------------------------------------------------------------- */
  45
  46 #define _NOT_USED_      0xFFFFFFFF
  47
  48 const uint sdram_table[] = {
  49         /*
  50          * Single Read. (Offset 0 in UPMA RAM)
  51          */
  52         0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
  53         0x1ff77c47,                                     /* last */
  54         /*
  55          * SDRAM Initialization (offset 5 in UPMA RAM)
  56          *
  57          * This is no UPM entry point. The following definition uses
  58          * the remaining space to establish an initialization
  59          * sequence, which is executed by a RUN command.
  60          *
  61          */
  62         0x1fe77c35, 0xffaffc34, 0x1fa57c35,     /* last */
  63         /*
  64          * Burst Read. (Offset 8 in UPMA RAM)
  65          */
  66         0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
  67         0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, /* last */
  68         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  69         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  70         /*
  71          * Single Write. (Offset 18 in UPMA RAM)
  72          */
  73         0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, /* last */
  74         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  75         /*
  76          * Burst Write. (Offset 20 in UPMA RAM)
  77          */
  78         0x1f07fc04, 0xeeaebc00, 0x10ad4c00, 0xf0afcc00,
  79         0xf0afcc00, 0xe1bb8c06, 0x1ff77c47,     /* last */
  80         _NOT_USED_,
  81         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  82         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  83         /*
  84          * Refresh  (Offset 30 in UPMA RAM)
  85          */
  86         0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
  87         0xfffffc84, 0xfffffc07,         /* last */
  88         _NOT_USED_, _NOT_USED_,
  89         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  90         /*
  91          * Exception. (Offset 3c in UPMA RAM)
  92          */
  93         0x7ffffc07,                                     /* last */
  94         _NOT_USED_, _NOT_USED_, _NOT_USED_,
  95 };
  96
  97 /* ------------------------------------------------------------------------- */
  98
  99
 100 /*
 101  * Check Board Identity:
 102  *
 103  * Test ID string (HERMES...)
 104  *
 105  * Return code for board revision and network speed
 106  */
 107
 108 int checkboard (void)
 109 {
 110         char *s = getenv ("serial#");
 111         char *e;
 112
 113         puts ("Board: ");
 114
 115         if (!s || strncmp (s, "HERMES", 6)) {
 116                 puts ("### No HW ID - assuming HERMES-PRO");
 117         } else {
 118                 for (e = s; *e; ++e) {
 119                         if (*e == ' ')
 120                                 break;
 121                 }
 122
 123                 for (; s < e; ++s) {
 124                         putc (*s);
 125                 }
 126         }
 127
 128         gd->board_type = board_init ();
 129
 130         printf ("  Rev. %ld.x\n", (gd->board_type >> 16));
 131
 132         return (0);
 133 }
 134
 135 /* ------------------------------------------------------------------------- */
 136
 137 long int initdram (int board_type)
 138 {
 139         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 140         volatile memctl8xx_t *memctl = &immap->im_memctl;
 141         long int size, size8, size9;
 142
 143         upmconfig (UPMA, (uint *) sdram_table,
 144                            sizeof (sdram_table) / sizeof (uint));
 145
 146         /*
 147          * Preliminary prescaler for refresh
 148          */
 149         memctl->memc_mptpr = 0x0400;
 150
 151         memctl->memc_mar = 0x00000088;
 152
 153         /*
 154          * Map controller banks 1 to the SDRAM banks at preliminary address
 155          */
 156         memctl->memc_or1 = CFG_OR1_PRELIM;
 157         memctl->memc_br1 = CFG_BR1_PRELIM;
 158
 159         /* HERMES-PRO boards have only one bank SDRAM */
 160
 161
 162         udelay (200);
 163
 164         /* perform SDRAM initializsation sequence */
 165
 166         memctl->memc_mamr = 0xD0802114;
 167         memctl->memc_mcr = 0x80002105;
 168         udelay (1);
 169         memctl->memc_mamr = 0xD0802118;
 170         memctl->memc_mcr = 0x80002130;
 171         udelay (1);
 172         memctl->memc_mamr = 0xD0802114;
 173         memctl->memc_mcr = 0x80002106;
 174
 175         udelay (1000);
 176
 177         /*
 178          * Check Bank 0 Memory Size for re-configuration
 179          *
 180          * try 8 column mode
 181          */
 182         size8 = dram_size (CFG_MAMR_8COL, (long *) SDRAM_BASE_PRELIM,
 183                                            SDRAM_MAX_SIZE);
 184
 185         udelay (1000);
 186
 187         /*
 188          * try 9 column mode
 189          */
 190         size9 = dram_size (CFG_MAMR_9COL, (long *) SDRAM_BASE_PRELIM,
 191                                            SDRAM_MAX_SIZE);
 192
 193         if (size8 < size9) {            /* leave configuration at 9 columns */
 194                 size = size9;
 195 /*      debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20);  */
 196         } else {                                        /* back to 8 columns            */
 197                 size = size8;
 198                 memctl->memc_mamr = CFG_MAMR_8COL;
 199                 udelay (500);
 200 /*      debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20);  */
 201         }
 202
 203         udelay (1000);
 204
 205         memctl->memc_or1 = ((-size) & 0xFFFF0000) | SDRAM_TIMING;
 206         memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
 207
 208         udelay (10000);
 209
 210         return (size);
 211 }
 212
 213 /* ------------------------------------------------------------------------- */
 214
 215 /*
 216  * Check memory range for valid RAM. A simple memory test determines
 217  * the actually available RAM size between addresses `base' and
 218  * `base + maxsize'. Some (not all) hardware errors are detected:
 219  * - short between address lines
 220  * - short between data lines
 221  */
 222
 223 static long int dram_size (long int mamr_value, long int *base,
 224                                                    long int maxsize)
 225 {
 226         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 227         volatile memctl8xx_t *memctl = &immap->im_memctl;
 228
 229         memctl->memc_mamr = mamr_value;
 230
 231         return (get_ram_size(base, maxsize));
 232 }
 233
 234 /* ------------------------------------------------------------------------- */
 235
 236 #define PB_LED_3        0x00020000      /* Status LED's */
 237 #define PB_LED_2        0x00010000
 238 #define PB_LED_1        0x00008000
 239 #define PB_LED_0        0x00004000
 240
 241 #define PB_LED_ALL      (PB_LED_0 | PB_LED_1 | PB_LED_2 | PB_LED_3)
 242
 243 #define PC_REP_SPD1     0x00000800
 244 #define PC_REP_SPD0     0x00000400
 245
 246 #define PB_RESET_2081   0x00000020      /* Reset PEB2081 */
 247
 248 #define PB_MAI_4        0x00000010      /* Configuration */
 249 #define PB_MAI_3        0x00000008
 250 #define PB_MAI_2        0x00000004
 251 #define PB_MAI_1        0x00000002
 252 #define PB_MAI_0        0x00000001
 253
 254 #define PB_MAI_ALL      (PB_MAI_0 | PB_MAI_1 | PB_MAI_2 | PB_MAI_3 | PB_MAI_4)
 255
 256
 257 #define PC_REP_MGRPRS   0x0200
 258 #define PC_REP_SPD      0x0040          /* Select 100 Mbps */
 259 #define PC_REP_RES      0x0004
 260 #define PC_BIT14        0x0002          /* ??? */
 261 #define PC_BIT15        0x0001          /* ??? ENDSL ?? */
 262
 263 /* ------------------------------------------------------------------------- */
 264
 265 static ulong board_init (void)
 266 {
 267         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 268         ulong reg, revision, speed = 100;
 269         int ethspeed;
 270         char *s;
 271
 272         if ((s = getenv ("ethspeed")) != NULL) {
 273                 if (strcmp (s, "100") == 0) {
 274                         ethspeed = 100;
 275                 } else if (strcmp (s, "10") == 0) {
 276                         ethspeed = 10;
 277                 } else {
 278                         ethspeed = 0;
 279                 }
 280         } else {
 281                 ethspeed = 0;
 282         }
 283
 284         /* Configure Port B Output Pins => 0x0003cc3F */
 285         reg = PB_LED_ALL | PC_REP_SPD1 | PC_REP_SPD0 | PB_RESET_2081 |
 286                         PB_MAI_ALL;
 287         immr->im_cpm.cp_pbpar &= ~reg;
 288         immr->im_cpm.cp_pbodr &= ~reg;
 289         immr->im_cpm.cp_pbdat &= ~reg;  /* all 0 */
 290         immr->im_cpm.cp_pbdir |= reg;
 291
 292         /* Check hardware revision */
 293         if ((immr->im_ioport.iop_pcdat & 0x0003) == 0x0003) {
 294                 /*
 295                  * Revision 3.x hardware
 296                  */
 297                 revision = 3;
 298
 299                 immr->im_ioport.iop_pcdat = 0x0240;
 300                 immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_SPD | PC_REP_RES | PC_BIT14);       /* = 0x0246 */
 301                 immr->im_ioport.iop_pcdat |= PC_REP_RES;
 302         } else {
 303                 immr->im_ioport.iop_pcdat = 0x0002;
 304                 immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_RES | PC_BIT14 | PC_BIT15); /* = 0x0207 */
 305
 306                 if ((immr->im_ioport.iop_pcdat & PC_REP_SPD) == 0) {
 307                         /*
 308                          * Revision 2.x hardware: PC9 connected to PB21
 309                          */
 310                         revision = 2;
 311
 312                         if (ethspeed == 0) {
 313                                 /* both 10 and 100 Mbps allowed:
 314                                  * select 10 Mbps and autonegotiation
 315                                  */
 316                                 puts ("  [10+100]");
 317                                 immr->im_cpm.cp_pbdat = 0;      /* SPD1:SPD0 = 0:0 - autonegot. */
 318                                 speed = 10;
 319                         } else if (ethspeed == 10) {
 320                                 /* we are asked for 10 Mbps,
 321                                  * so select 10 Mbps
 322                                  */
 323                                 puts ("  [10]");
 324                                 immr->im_cpm.cp_pbdat = 0;      /* ??? */
 325                                 speed = 10;
 326                         } else {
 327                                 /* anything else:
 328                                  * select 100 Mbps
 329                                  */
 330                                 puts ("  [100]");
 331                                 immr->im_cpm.cp_pbdat = PC_REP_SPD0 | PC_REP_SPD1;
 332                                 /* SPD1:SPD0 = 1:1 - 100 Mbps */
 333                                 speed = 100;
 334                         }
 335                         immr->im_ioport.iop_pcdat |= (PC_REP_RES | PC_BIT14);
 336
 337                         /* must be run from RAM  */
 338                         /* start_lxt980 (speed); */
 339                 /*************************/
 340                 } else {
 341                         /*
 342                          * Revision 1.x hardware
 343                          */
 344                         revision = 1;
 345
 346                         immr->im_ioport.iop_pcdat = PC_REP_MGRPRS | PC_BIT14;   /* = 0x0202 */
 347                         immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_SPD | PC_REP_RES | PC_BIT14 | PC_BIT15);    /* = 0x0247 */
 348
 349                         if (ethspeed == 0) {
 350                                 /* both 10 and 100 Mbps allowed:
 351                                  * select 100 Mbps and autonegotiation
 352                                  */
 353                                 puts ("  [10+100]");
 354                                 immr->im_cpm.cp_pbdat = 0;      /* SPD1:SPD0 = 0:0 - autonegot. */
 355                                 immr->im_ioport.iop_pcdat |= PC_REP_SPD;
 356                         } else if (ethspeed == 10) {
 357                                 /* we are asked for 10 Mbps,
 358                                    * so select 10 Mbps
 359                                  */
 360                                 puts ("  [10]");
 361                                 immr->im_cpm.cp_pbdat = PC_REP_SPD0;    /* SPD1:SPD0 = 0:1 - 10 Mbps */
 362                         } else {
 363                                 /* anything else:
 364                                    * select 100 Mbps
 365                                  */
 366                                 puts ("  [100]");
 367                                 immr->im_cpm.cp_pbdat = PC_REP_SPD0 | PC_REP_SPD1;
 368                                 /* SPD1:SPD0 = 1:1 - 100 Mbps */
 369                                 immr->im_ioport.iop_pcdat |= PC_REP_SPD;
 370                         }
 371
 372                         immr->im_ioport.iop_pcdat |= PC_REP_RES;
 373                 }
 374         }
 375         SHOW_BOOT_PROGRESS (0x00);
 376
 377         return ((revision << 16) | (speed & 0xFFFF));
 378 }
 379
 380 /* ------------------------------------------------------------------------- */
 381
 382 #define SCC_SM          1                       /* Index => SCC2 */
 383 #define PROFF           PROFF_SCC2
 384
 385 #define SMI_MSGLEN      8                       /* Length of SMI Messages        */
 386
 387 #define PHYGPCR_ADDR    0x109   /* Port Enable               */
 388 #define PHYPCR_ADDR     0x132           /* PHY Port Control Reg. (port 1)    */
 389 #define LEDPCR_ADDR     0x141           /* LED Port Control Reg.         */
 390 #define RPRESET_ADDR    0x144   /* Repeater Reset            */
 391
 392 #define PHYPCR_SPEED    0x2000  /* on for 100 Mbps, off for 10 Mbps  */
 393 #define PHYPCR_AN       0x1000          /* on to enable  Auto-Negotiation    */
 394 #define PHYPCR_REST_AN  0x0200  /* on to restart Auto-Negotiation    */
 395 #define PHYPCR_FDX      0x0100          /* on for Full Duplex, off for HDX   */
 396 #define PHYPCR_COLT     0x0080          /* on to enable COL signal test      */
 397
 398 /* ------------------------------------------------------------------------- */
 399
 400 /*
 401  * Must run from RAM:
 402  * uses parameter RAM area which is used for stack while running from ROM
 403  */
 404 void hermes_start_lxt980 (int speed)
 405 {
 406         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 407         volatile cpm8xx_t *cp = (cpm8xx_t *) & (immr->im_cpm);
 408         volatile scc_t *sp = (scc_t *) & (cp->cp_scc[SCC_SM]);
 409         volatile cbd_t *bd;
 410         volatile hdlc_pram_t *hp;
 411         uchar smimsg[SMI_MSGLEN];
 412         ushort phypcrval;
 413         uint bd_off;
 414         int pnr;
 415
 416         printf ("LXT9880: %3d Mbps\n", speed);
 417
 418         immr->im_ioport.iop_paodr |= 0x0008;    /* init PAODR: PA12 (TXD2) open drain */
 419         immr->im_ioport.iop_papar |= 0x400c;    /* init PAPAR: TXD2, RXD2, BRGO4 */
 420         immr->im_ioport.iop_padir &= 0xbff3;    /* init PADIR: BRGO4 */
 421         immr->im_ioport.iop_padir |= 0x4000;
 422
 423         /* get temporary BD; no need for permanent alloc */
 424         bd_off = dpram_base_align (8);
 425
 426         bd = (cbd_t *) (immr->im_cpm.cp_dpmem + bd_off);
 427
 428         bd->cbd_bufaddr = 0;
 429         bd->cbd_datlen = 0;
 430         bd->cbd_sc = BD_SC_WRAP | BD_SC_LAST | BD_SC_INTRPT | BD_SC_TC;
 431
 432         /* init. baudrate generator BRG4 */
 433         cp->cp_brgc4 = (0x00010000 | (50 << 1));        /* output 1 MHz */
 434
 435         cp->cp_sicr &= 0xFFFF00FF;      /* SICR: mask SCC2 */
 436         cp->cp_sicr |= 0x00001B00;      /* SICR: SCC2 clk BRG4 */
 437
 438         /* init SCC_SM register */
 439         sp->scc_psmr = 0x0000;          /* init PSMR: no additional flags */
 440         sp->scc_todr = 0x0000;
 441         sp->scc_dsr = 0x7e7e;
 442
 443         /* init. SCC_SM parameter area */
 444         hp = (hdlc_pram_t *) & cp->cp_dparam[PROFF];
 445
 446         hp->tbase = bd_off;                     /* offset from beginning of DPRAM */
 447
 448         hp->rfcr = 0x18;
 449         hp->tfcr = 0x18;
 450         hp->mrblr = 10;
 451
 452         hp->c_mask = 0x0000f0b8;
 453         hp->c_pres = 0x0000ffff;
 454
 455         hp->disfc = 0;
 456         hp->crcec = 0;
 457         hp->abtsc = 0;
 458         hp->nmarc = 0;
 459         hp->retrc = 0;
 460
 461         hp->mflr = 10;
 462
 463         hp->rfthr = 1;
 464
 465         hp->hmask = 0;
 466         hp->haddr1 = 0;
 467         hp->haddr2 = 0;
 468         hp->haddr3 = 0;
 469         hp->haddr4 = 0;
 470
 471         cp->cp_cpcr = SCC_SM << 6 | 0x0001;     /* SCC_SM: init TX/RX params */
 472         while (cp->cp_cpcr & CPM_CR_FLG);
 473
 474         /* clear all outstanding SCC events */
 475         sp->scc_scce = ~0;
 476
 477         /* enable transmitter: GSMR_L: TPL=2(16bits), TPP=3(all ones), ENT */
 478         sp->scc_gsmrh = 0;
 479         sp->scc_gsmrl |= SCC_GSMRL_TPL_16 | SCC_GSMRL_TPP_ALL1 |
 480                         SCC_GSMRL_ENT | SCC_GSMRL_MODE_HDLC;
 481
 482 #if 0
 483         smimsg[0] = 0x00;                       /* CHIP/HUB ID */
 484         smimsg[1] = 0x38;                       /* WRITE CMD */
 485         smimsg[2] = (RPRESET_ADDR << 4) & 0xf0;
 486         smimsg[3] = RPRESET_ADDR >> 4;
 487         smimsg[4] = 0x01;
 488         smimsg[5] = 0x00;
 489         smimsg[6] = 0x00;
 490         smimsg[7] = 0x00;
 491
 492         send_smi_frame (sp, bd, smimsg);
 493 #endif
 494
 495         smimsg[0] = 0x7f;                       /* BROADCAST */
 496         smimsg[1] = 0x34;                       /* ASSIGN HUB ID */
 497         smimsg[2] = 0x00;
 498         smimsg[3] = 0x00;
 499         smimsg[4] = 0x00;                       /* HUB ID = 0 */
 500         smimsg[5] = 0x00;
 501         smimsg[6] = 0x00;
 502         smimsg[7] = 0x00;
 503
 504         send_smi_frame (sp, bd, smimsg);
 505
 506         smimsg[0] = 0x7f;                       /* BROADCAST */
 507         smimsg[1] = 0x3c;                       /* SET ARBOUT TO 0 */
 508         smimsg[2] = 0x00;                       /* ADDRESS = 0 */
 509         smimsg[3] = 0x00;
 510         smimsg[4] = 0x00;                       /* DATA = 0 */
 511         smimsg[5] = 0x00;
 512         smimsg[6] = 0x00;
 513         smimsg[7] = 0x00;
 514
 515         send_smi_frame (sp, bd, smimsg);
 516
 517         if (speed == 100) {
 518                 phypcrval = PHYPCR_SPEED;       /* 100 MBIT, disable autoneg. */
 519         } else {
 520                 phypcrval = 0;                  /* 10 MBIT, disable autoneg. */
 521         }
 522
 523         /* send MSGs */
 524         for (pnr = 0; pnr < 8; pnr++) {
 525                 smimsg[0] = 0x00;               /* CHIP/HUB ID */
 526                 smimsg[1] = 0x38;               /* WRITE CMD */
 527                 smimsg[2] = ((PHYPCR_ADDR + pnr) << 4) & 0xf0;
 528                 smimsg[3] = (PHYPCR_ADDR + pnr) >> 4;
 529                 smimsg[4] = (unsigned char) (phypcrval & 0xff);
 530                 smimsg[5] = (unsigned char) (phypcrval >> 8);
 531                 smimsg[6] = 0x00;
 532                 smimsg[7] = 0x00;
 533
 534                 send_smi_frame (sp, bd, smimsg);
 535         }
 536
 537         smimsg[0] = 0x00;                       /* CHIP/HUB ID */
 538         smimsg[1] = 0x38;                       /* WRITE CMD */
 539         smimsg[2] = (PHYGPCR_ADDR << 4) & 0xf0;
 540         smimsg[3] = PHYGPCR_ADDR >> 4;
 541         smimsg[4] = 0xff;                       /* enable port 1-8 */
 542         smimsg[5] = 0x01;                       /* enable MII1 (0x01) */
 543         smimsg[6] = 0x00;
 544         smimsg[7] = 0x00;
 545
 546         send_smi_frame (sp, bd, smimsg);
 547
 548         smimsg[0] = 0x00;                       /* CHIP/HUB ID */
 549         smimsg[1] = 0x38;                       /* WRITE CMD */
 550         smimsg[2] = (LEDPCR_ADDR << 4) & 0xf0;
 551         smimsg[3] = LEDPCR_ADDR >> 4;
 552         smimsg[4] = 0xaa;                       /* Port 1-8 Conf.bits = 10 (Hardware control) */
 553         smimsg[5] = 0xaa;
 554         smimsg[6] = 0x00;
 555         smimsg[7] = 0x00;
 556
 557         send_smi_frame (sp, bd, smimsg);
 558
 559         /*
 560          * Disable Transmitter (so that we can free the BD, too)
 561          */
 562         sp->scc_gsmrl &= ~SCC_GSMRL_ENT;
 563 }
 564
 565 /* ------------------------------------------------------------------------- */
 566
 567 static void send_smi_frame (volatile scc_t * sp, volatile cbd_t * bd,
 568                                                         uchar * msg)
 569 {
 570 #ifdef DEBUG
 571         unsigned hub, chip, cmd, length, addr;
 572
 573         hub = msg[0] & 0x1F;
 574         chip = msg[0] >> 5;
 575         cmd = msg[1] & 0x1F;
 576         length = (msg[1] >> 5) | ((msg[2] & 0x0F) << 3);
 577         addr = (msg[2] >> 4) | (msg[3] << 4);
 578
 579         printf ("SMI send: Hub %02x Chip %x Cmd %02x Len %d Addr %03x: "
 580                         "%02x %02x %02x %02x\n",
 581                         hub, chip, cmd, length, addr, msg[4], msg[5], msg[6], msg[7]);
 582 #endif /* DEBUG */
 583
 584         bd->cbd_bufaddr = (uint) msg;
 585         bd->cbd_datlen = SMI_MSGLEN;
 586         bd->cbd_sc |= BD_SC_READY;
 587
 588         /* wait for msg transmitted */
 589         while ((sp->scc_scce & 0x0002) == 0);
 590         /* clear all events */
 591         sp->scc_scce = ~0;
 592 }
 593
 594 /* ------------------------------------------------------------------------- */
 595
 596 void show_boot_progress (int status)
 597 {
 598         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 599
 600         if (status < -32) status = -1;  /* let things compatible */
 601         status ^= 0x0F;
 602         status = (status & 0x0F) << 14;
 603         immr->im_cpm.cp_pbdat = (immr->im_cpm.cp_pbdat & ~PB_LED_ALL) | status;
 604 }
 605
 606 /* ------------------------------------------------------------------------- */