common/cmd_pcmcia.c

   1 /*
   2  * (C) Copyright 2000-2006
   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  *
  25  * Lots of code copied from:
  26  *
  27  * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
  28  * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
  29  *
  30  * "The ExCA standard specifies that socket controllers should provide
  31  * two IO and five memory windows per socket, which can be independently
  32  * configured and positioned in the host address space and mapped to
  33  * arbitrary segments of card address space. " - David A Hinds. 1999
  34  *
  35  * This controller does _not_ meet the ExCA standard.
  36  *
  37  * m8xx pcmcia controller brief info:
  38  * + 8 windows (attrib, mem, i/o)
  39  * + up to two slots (SLOT_A and SLOT_B)
  40  * + inputpins, outputpins, event and mask registers.
  41  * - no offset register. sigh.
  42  *
  43  * Because of the lacking offset register we must map the whole card.
  44  * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
  45  * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
  46  * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
  47  * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
  48  * They are maximum 64KByte each...
  49  */
  50
  51 /* #define DEBUG        1       */
  52
  53 /*
  54  * PCMCIA support
  55  */
  56 #include <common.h>
  57 #include <command.h>
  58 #include <config.h>
  59 #include <pcmcia.h>
  60 #include <asm/io.h>
  61
  62 /* -------------------------------------------------------------------- */
  63
  64 #if defined(CONFIG_CMD_PCMCIA)
  65
  66 extern int pcmcia_on (void);
  67 extern int pcmcia_off (void);
  68
  69 int do_pinit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  70 {
  71         int rcode = 0;
  72
  73         if (argc != 2) {
  74                 printf ("Usage: pinit {on | off}\n");
  75                 return 1;
  76         }
  77         if (strcmp(argv[1],"on") == 0) {
  78                 rcode = pcmcia_on ();
  79         } else if (strcmp(argv[1],"off") == 0) {
  80                 rcode = pcmcia_off ();
  81         } else {
  82                 printf ("Usage: pinit {on | off}\n");
  83                 return 1;
  84         }
  85
  86         return rcode;
  87 }
  88
  89 U_BOOT_CMD(
  90         pinit,  2,      0,      do_pinit,
  91         "pinit   - PCMCIA sub-system\n",
  92         "on  - power on PCMCIA socket\n"
  93                         "pinit off - power off PCMCIA socket\n"
  94           );
  95
  96 #endif
  97
  98 /* -------------------------------------------------------------------- */
  99
 100 #undef  CHECK_IDE_DEVICE
 101
 102 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
 103 #define CHECK_IDE_DEVICE
 104 #endif
 105
 106 #if     defined(CONFIG_PXA_PCMCIA)
 107 #define CHECK_IDE_DEVICE
 108 #endif
 109
 110 #ifdef  CHECK_IDE_DEVICE
 111
 112 int             ide_devices_found;
 113 static uchar    *known_cards[] = {
 114         (uchar *)"ARGOSY PnPIDE D5",
 115         NULL
 116 };
 117
 118 #define MAX_TUPEL_SZ    512
 119 #define MAX_FEATURES    4
 120
 121 #define MAX_IDENT_CHARS         64
 122 #define MAX_IDENT_FIELDS        4
 123
 124 #define indent  "\t   "
 125
 126 static void print_funcid (int func)
 127 {
 128         puts (indent);
 129         switch (func) {
 130                 case CISTPL_FUNCID_MULTI:
 131                         puts (" Multi-Function");
 132                         break;
 133                 case CISTPL_FUNCID_MEMORY:
 134                         puts (" Memory");
 135                         break;
 136                 case CISTPL_FUNCID_SERIAL:
 137                         puts (" Serial Port");
 138                         break;
 139                 case CISTPL_FUNCID_PARALLEL:
 140                         puts (" Parallel Port");
 141                         break;
 142                 case CISTPL_FUNCID_FIXED:
 143                         puts (" Fixed Disk");
 144                         break;
 145                 case CISTPL_FUNCID_VIDEO:
 146                         puts (" Video Adapter");
 147                         break;
 148                 case CISTPL_FUNCID_NETWORK:
 149                         puts (" Network Adapter");
 150                         break;
 151                 case CISTPL_FUNCID_AIMS:
 152                         puts (" AIMS Card");
 153                         break;
 154                 case CISTPL_FUNCID_SCSI:
 155                         puts (" SCSI Adapter");
 156                         break;
 157                 default:
 158                         puts (" Unknown");
 159                         break;
 160         }
 161         puts (" Card\n");
 162 }
 163
 164 static void print_fixed (volatile uchar *p)
 165 {
 166         if (p == NULL)
 167                 return;
 168
 169         puts(indent);
 170
 171         switch (*p) {
 172                 case CISTPL_FUNCE_IDE_IFACE:
 173                 {   uchar iface = *(p+2);
 174
 175                 puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
 176                 puts (" interface ");
 177                 break;
 178                 }
 179                 case CISTPL_FUNCE_IDE_MASTER:
 180                 case CISTPL_FUNCE_IDE_SLAVE:
 181                 {   uchar f1 = *(p+2);
 182                 uchar f2 = *(p+4);
 183
 184                 puts ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
 185
 186                 if (f1 & CISTPL_IDE_UNIQUE)
 187                         puts (" [unique]");
 188
 189                 puts ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
 190
 191                 if (f2 & CISTPL_IDE_HAS_SLEEP)
 192                         puts (" [sleep]");
 193
 194                 if (f2 & CISTPL_IDE_HAS_STANDBY)
 195                         puts (" [standby]");
 196
 197                 if (f2 & CISTPL_IDE_HAS_IDLE)
 198                         puts (" [idle]");
 199
 200                 if (f2 & CISTPL_IDE_LOW_POWER)
 201                         puts (" [low power]");
 202
 203                 if (f2 & CISTPL_IDE_REG_INHIBIT)
 204                         puts (" [reg inhibit]");
 205
 206                 if (f2 & CISTPL_IDE_HAS_INDEX)
 207                         puts (" [index]");
 208
 209                 if (f2 & CISTPL_IDE_IOIS16)
 210                         puts (" [IOis16]");
 211
 212                 break;
 213                 }
 214         }
 215         putc ('\n');
 216 }
 217
 218 static int identify  (volatile uchar *p)
 219 {
 220         uchar id_str[MAX_IDENT_CHARS];
 221         uchar data;
 222         uchar *t;
 223         uchar **card;
 224         int i, done;
 225
 226         if (p == NULL)
 227                 return (0);     /* Don't know */
 228
 229         t = id_str;
 230         done =0;
 231
 232         for (i=0; i<=4 && !done; ++i, p+=2) {
 233                 while ((data = *p) != '\0') {
 234                         if (data == 0xFF) {
 235                                 done = 1;
 236                                 break;
 237                         }
 238                         *t++ = data;
 239                         if (t == &id_str[MAX_IDENT_CHARS-1]) {
 240                                 done = 1;
 241                                 break;
 242                         }
 243                         p += 2;
 244                 }
 245                 if (!done)
 246                         *t++ = ' ';
 247         }
 248         *t = '\0';
 249         while (--t > id_str) {
 250                 if (*t == ' ')
 251                         *t = '\0';
 252                 else
 253                         break;
 254         }
 255         puts ((char *)id_str);
 256         putc ('\n');
 257
 258         for (card=known_cards; *card; ++card) {
 259                 debug ("## Compare against \"%s\"\n", *card);
 260                 if (strcmp((char *)*card, (char *)id_str) == 0) {       /* found! */
 261                         debug ("## CARD FOUND ##\n");
 262                         return (1);
 263                 }
 264         }
 265
 266         return (0);     /* don't know */
 267 }
 268
 269 int check_ide_device (int slot)
 270 {
 271         volatile uchar *ident = NULL;
 272         volatile uchar *feature_p[MAX_FEATURES];
 273         volatile uchar *p, *start, *addr;
 274         int n_features = 0;
 275         uchar func_id = ~0;
 276         uchar code, len;
 277         ushort config_base = 0;
 278         int found = 0;
 279         int i;
 280
 281         addr = (volatile uchar *)(CFG_PCMCIA_MEM_ADDR +
 282                                   CFG_PCMCIA_MEM_SIZE * (slot * 4));
 283         debug ("PCMCIA MEM: %08lX\n", (ulong)addr);
 284
 285         start = p = (volatile uchar *) addr;
 286
 287         while ((p - start) < MAX_TUPEL_SZ) {
 288
 289                 code = *p; p += 2;
 290
 291                 if (code == 0xFF) { /* End of chain */
 292                         break;
 293                 }
 294
 295                 len = *p; p += 2;
 296 #if defined(DEBUG) && (DEBUG > 1)
 297                 { volatile uchar *q = p;
 298                         printf ("\nTuple code %02x  length %d\n\tData:",
 299                                 code, len);
 300
 301                         for (i = 0; i < len; ++i) {
 302                                 printf (" %02x", *q);
 303                                 q+= 2;
 304                         }
 305                 }
 306 #endif  /* DEBUG */
 307                 switch (code) {
 308                 case CISTPL_VERS_1:
 309                         ident = p + 4;
 310                         break;
 311                 case CISTPL_FUNCID:
 312                         /* Fix for broken SanDisk which may have 0x80 bit set */
 313                         func_id = *p & 0x7F;
 314                         break;
 315                 case CISTPL_FUNCE:
 316                         if (n_features < MAX_FEATURES)
 317                                 feature_p[n_features++] = p;
 318                         break;
 319                 case CISTPL_CONFIG:
 320                         config_base = (*(p+6) << 8) + (*(p+4));
 321                         debug ("\n## Config_base = %04x ###\n", config_base);
 322                 default:
 323                         break;
 324                 }
 325                 p += 2 * len;
 326         }
 327
 328         found = identify (ident);
 329
 330         if (func_id != ((uchar)~0)) {
 331                 print_funcid (func_id);
 332
 333                 if (func_id == CISTPL_FUNCID_FIXED)
 334                         found = 1;
 335                 else
 336                         return (1);     /* no disk drive */
 337         }
 338
 339         for (i=0; i<n_features; ++i) {
 340                 print_fixed (feature_p[i]);
 341         }
 342
 343         if (!found) {
 344                 printf ("unknown card type\n");
 345                 return (1);
 346         }
 347
 348         ide_devices_found |= (1 << slot);
 349
 350 #if CONFIG_CPC45
 351 #else
 352         /* set I/O area in config reg -> only valid for ARGOSY D5!!! */
 353         *((uchar *)(addr + config_base)) = 1;
 354 #endif
 355 #if 0
 356         printf("\n## Config_base = %04x ###\n", config_base);
 357         printf("Configuration Option Register: %02x @ %x\n", readb(addr + config_base), addr + config_base);
 358         printf("Card Configuration and Status Register: %02x\n", readb(addr + config_base + 2));
 359         printf("Pin Replacement Register Register: %02x\n", readb(addr + config_base + 4));
 360         printf("Socket and Copy Register: %02x\n", readb(addr + config_base + 6));
 361 #endif
 362         return (0);
 363 }
 364
 365 #endif  /* CHECK_IDE_DEVICE */