cmd/pcmcia.c

   1 /*
   2  * (C) Copyright 2000-2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  ********************************************************************
   8  *
   9  * Lots of code copied from:
  10  *
  11  * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
  12  * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
  13  *
  14  * "The ExCA standard specifies that socket controllers should provide
  15  * two IO and five memory windows per socket, which can be independently
  16  * configured and positioned in the host address space and mapped to
  17  * arbitrary segments of card address space. " - David A Hinds. 1999
  18  *
  19  * This controller does _not_ meet the ExCA standard.
  20  *
  21  * m8xx pcmcia controller brief info:
  22  * + 8 windows (attrib, mem, i/o)
  23  * + up to two slots (SLOT_A and SLOT_B)
  24  * + inputpins, outputpins, event and mask registers.
  25  * - no offset register. sigh.
  26  *
  27  * Because of the lacking offset register we must map the whole card.
  28  * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
  29  * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
  30  * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
  31  * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
  32  * They are maximum 64KByte each...
  33  */
  34
  35 /* #define DEBUG        1       */
  36
  37 /*
  38  * PCMCIA support
  39  */
  40 #include <common.h>
  41 #include <command.h>
  42 #include <config.h>
  43 #include <pcmcia.h>
  44 #include <asm/io.h>
  45
  46 /* -------------------------------------------------------------------- */
  47
  48 #if defined(CONFIG_CMD_PCMCIA)
  49
  50 extern int pcmcia_on (void);
  51 extern int pcmcia_off (void);
  52
  53 int do_pinit (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  54 {
  55         int rcode = 0;
  56
  57         if (argc != 2) {
  58                 printf ("Usage: pinit {on | off}\n");
  59                 return 1;
  60         }
  61         if (strcmp(argv[1],"on") == 0) {
  62                 rcode = pcmcia_on ();
  63         } else if (strcmp(argv[1],"off") == 0) {
  64                 rcode = pcmcia_off ();
  65         } else {
  66                 printf ("Usage: pinit {on | off}\n");
  67                 return 1;
  68         }
  69
  70         return rcode;
  71 }
  72
  73 U_BOOT_CMD(
  74         pinit,  2,      0,      do_pinit,
  75         "PCMCIA sub-system",
  76         "on  - power on PCMCIA socket\n"
  77         "pinit off - power off PCMCIA socket"
  78 );
  79
  80 #endif
  81
  82 /* -------------------------------------------------------------------- */
  83
  84 #undef  CHECK_IDE_DEVICE
  85
  86 #if     defined(CONFIG_PXA_PCMCIA)
  87 #define CHECK_IDE_DEVICE
  88 #endif
  89
  90 #ifdef  CHECK_IDE_DEVICE
  91
  92 int             ide_devices_found;
  93 static uchar    *known_cards[] = {
  94         (uchar *)"ARGOSY PnPIDE D5",
  95         NULL
  96 };
  97
  98 #define MAX_TUPEL_SZ    512
  99 #define MAX_FEATURES    4
 100
 101 #define MAX_IDENT_CHARS         64
 102 #define MAX_IDENT_FIELDS        4
 103
 104 #define indent  "\t   "
 105
 106 static void print_funcid (int func)
 107 {
 108         puts (indent);
 109         switch (func) {
 110                 case CISTPL_FUNCID_MULTI:
 111                         puts (" Multi-Function");
 112                         break;
 113                 case CISTPL_FUNCID_MEMORY:
 114                         puts (" Memory");
 115                         break;
 116                 case CISTPL_FUNCID_SERIAL:
 117                         puts (" Serial Port");
 118                         break;
 119                 case CISTPL_FUNCID_PARALLEL:
 120                         puts (" Parallel Port");
 121                         break;
 122                 case CISTPL_FUNCID_FIXED:
 123                         puts (" Fixed Disk");
 124                         break;
 125                 case CISTPL_FUNCID_VIDEO:
 126                         puts (" Video Adapter");
 127                         break;
 128                 case CISTPL_FUNCID_NETWORK:
 129                         puts (" Network Adapter");
 130                         break;
 131                 case CISTPL_FUNCID_AIMS:
 132                         puts (" AIMS Card");
 133                         break;
 134                 case CISTPL_FUNCID_SCSI:
 135                         puts (" SCSI Adapter");
 136                         break;
 137                 default:
 138                         puts (" Unknown");
 139                         break;
 140         }
 141         puts (" Card\n");
 142 }
 143
 144 static void print_fixed (volatile uchar *p)
 145 {
 146         if (p == NULL)
 147                 return;
 148
 149         puts(indent);
 150
 151         switch (*p) {
 152                 case CISTPL_FUNCE_IDE_IFACE:
 153                 {   uchar iface = *(p+2);
 154
 155                 puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
 156                 puts (" interface ");
 157                 break;
 158                 }
 159                 case CISTPL_FUNCE_IDE_MASTER:
 160                 case CISTPL_FUNCE_IDE_SLAVE:
 161                 {   uchar f1 = *(p+2);
 162                 uchar f2 = *(p+4);
 163
 164                 puts ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
 165
 166                 if (f1 & CISTPL_IDE_UNIQUE)
 167                         puts (" [unique]");
 168
 169                 puts ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
 170
 171                 if (f2 & CISTPL_IDE_HAS_SLEEP)
 172                         puts (" [sleep]");
 173
 174                 if (f2 & CISTPL_IDE_HAS_STANDBY)
 175                         puts (" [standby]");
 176
 177                 if (f2 & CISTPL_IDE_HAS_IDLE)
 178                         puts (" [idle]");
 179
 180                 if (f2 & CISTPL_IDE_LOW_POWER)
 181                         puts (" [low power]");
 182
 183                 if (f2 & CISTPL_IDE_REG_INHIBIT)
 184                         puts (" [reg inhibit]");
 185
 186                 if (f2 & CISTPL_IDE_HAS_INDEX)
 187                         puts (" [index]");
 188
 189                 if (f2 & CISTPL_IDE_IOIS16)
 190                         puts (" [IOis16]");
 191
 192                 break;
 193                 }
 194         }
 195         putc ('\n');
 196 }
 197
 198 static int identify  (volatile uchar *p)
 199 {
 200         uchar id_str[MAX_IDENT_CHARS];
 201         uchar data;
 202         uchar *t;
 203         uchar **card;
 204         int i, done;
 205
 206         if (p == NULL)
 207                 return (0);     /* Don't know */
 208
 209         t = id_str;
 210         done =0;
 211
 212         for (i=0; i<=4 && !done; ++i, p+=2) {
 213                 while ((data = *p) != '\0') {
 214                         if (data == 0xFF) {
 215                                 done = 1;
 216                                 break;
 217                         }
 218                         *t++ = data;
 219                         if (t == &id_str[MAX_IDENT_CHARS-1]) {
 220                                 done = 1;
 221                                 break;
 222                         }
 223                         p += 2;
 224                 }
 225                 if (!done)
 226                         *t++ = ' ';
 227         }
 228         *t = '\0';
 229         while (--t > id_str) {
 230                 if (*t == ' ')
 231                         *t = '\0';
 232                 else
 233                         break;
 234         }
 235         puts ((char *)id_str);
 236         putc ('\n');
 237
 238         for (card=known_cards; *card; ++card) {
 239                 debug ("## Compare against \"%s\"\n", *card);
 240                 if (strcmp((char *)*card, (char *)id_str) == 0) {       /* found! */
 241                         debug ("## CARD FOUND ##\n");
 242                         return (1);
 243                 }
 244         }
 245
 246         return (0);     /* don't know */
 247 }
 248
 249 int check_ide_device (int slot)
 250 {
 251         volatile uchar *ident = NULL;
 252         volatile uchar *feature_p[MAX_FEATURES];
 253         volatile uchar *p, *start, *addr;
 254         int n_features = 0;
 255         uchar func_id = ~0;
 256         uchar code, len;
 257         ushort config_base = 0;
 258         int found = 0;
 259         int i;
 260
 261         addr = (volatile uchar *)(CONFIG_SYS_PCMCIA_MEM_ADDR +
 262                                   CONFIG_SYS_PCMCIA_MEM_SIZE * (slot * 4));
 263         debug ("PCMCIA MEM: %08lX\n", (ulong)addr);
 264
 265         start = p = (volatile uchar *) addr;
 266
 267         while ((p - start) < MAX_TUPEL_SZ) {
 268
 269                 code = *p; p += 2;
 270
 271                 if (code == 0xFF) { /* End of chain */
 272                         break;
 273                 }
 274
 275                 len = *p; p += 2;
 276 #if defined(DEBUG) && (DEBUG > 1)
 277                 { volatile uchar *q = p;
 278                         printf ("\nTuple code %02x  length %d\n\tData:",
 279                                 code, len);
 280
 281                         for (i = 0; i < len; ++i) {
 282                                 printf (" %02x", *q);
 283                                 q+= 2;
 284                         }
 285                 }
 286 #endif  /* DEBUG */
 287                 switch (code) {
 288                 case CISTPL_VERS_1:
 289                         ident = p + 4;
 290                         break;
 291                 case CISTPL_FUNCID:
 292                         /* Fix for broken SanDisk which may have 0x80 bit set */
 293                         func_id = *p & 0x7F;
 294                         break;
 295                 case CISTPL_FUNCE:
 296                         if (n_features < MAX_FEATURES)
 297                                 feature_p[n_features++] = p;
 298                         break;
 299                 case CISTPL_CONFIG:
 300                         config_base = (*(p+6) << 8) + (*(p+4));
 301                         debug ("\n## Config_base = %04x ###\n", config_base);
 302                 default:
 303                         break;
 304                 }
 305                 p += 2 * len;
 306         }
 307
 308         found = identify (ident);
 309
 310         if (func_id != ((uchar)~0)) {
 311                 print_funcid (func_id);
 312
 313                 if (func_id == CISTPL_FUNCID_FIXED)
 314                         found = 1;
 315                 else
 316                         return (1);     /* no disk drive */
 317         }
 318
 319         for (i=0; i<n_features; ++i) {
 320                 print_fixed (feature_p[i]);
 321         }
 322
 323         if (!found) {
 324                 printf ("unknown card type\n");
 325                 return (1);
 326         }
 327
 328         ide_devices_found |= (1 << slot);
 329
 330         /* set I/O area in config reg -> only valid for ARGOSY D5!!! */
 331         *((uchar *)(addr + config_base)) = 1;
 332 #if 0
 333         printf("\n## Config_base = %04x ###\n", config_base);
 334         printf("Configuration Option Register: %02x @ %x\n", readb(addr + config_base), addr + config_base);
 335         printf("Card Configuration and Status Register: %02x\n", readb(addr + config_base + 2));
 336         printf("Pin Replacement Register Register: %02x\n", readb(addr + config_base + 4));
 337         printf("Socket and Copy Register: %02x\n", readb(addr + config_base + 6));
 338 #endif
 339         return (0);
 340 }
 341
 342 #endif  /* CHECK_IDE_DEVICE */