pcmcia.c 7.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341
  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2000-2006
  4. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. *
  6. ********************************************************************
  7. *
  8. * Lots of code copied from:
  9. *
  10. * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
  11. * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
  12. *
  13. * "The ExCA standard specifies that socket controllers should provide
  14. * two IO and five memory windows per socket, which can be independently
  15. * configured and positioned in the host address space and mapped to
  16. * arbitrary segments of card address space. " - David A Hinds. 1999
  17. *
  18. * This controller does _not_ meet the ExCA standard.
  19. *
  20. * m8xx pcmcia controller brief info:
  21. * + 8 windows (attrib, mem, i/o)
  22. * + up to two slots (SLOT_A and SLOT_B)
  23. * + inputpins, outputpins, event and mask registers.
  24. * - no offset register. sigh.
  25. *
  26. * Because of the lacking offset register we must map the whole card.
  27. * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
  28. * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
  29. * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
  30. * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
  31. * They are maximum 64KByte each...
  32. */
  33. /* #define DEBUG 1 */
  34. /*
  35. * PCMCIA support
  36. */
  37. #include <common.h>
  38. #include <command.h>
  39. #include <config.h>
  40. #include <pcmcia.h>
  41. #include <asm/io.h>
  42. /* -------------------------------------------------------------------- */
  43. #if defined(CONFIG_CMD_PCMCIA)
  44. extern int pcmcia_on (void);
  45. extern int pcmcia_off (void);
  46. int do_pinit (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  47. {
  48. int rcode = 0;
  49. if (argc != 2) {
  50. printf ("Usage: pinit {on | off}\n");
  51. return 1;
  52. }
  53. if (strcmp(argv[1],"on") == 0) {
  54. rcode = pcmcia_on ();
  55. } else if (strcmp(argv[1],"off") == 0) {
  56. rcode = pcmcia_off ();
  57. } else {
  58. printf ("Usage: pinit {on | off}\n");
  59. return 1;
  60. }
  61. return rcode;
  62. }
  63. U_BOOT_CMD(
  64. pinit, 2, 0, do_pinit,
  65. "PCMCIA sub-system",
  66. "on - power on PCMCIA socket\n"
  67. "pinit off - power off PCMCIA socket"
  68. );
  69. #endif
  70. /* -------------------------------------------------------------------- */
  71. #undef CHECK_IDE_DEVICE
  72. #if defined(CONFIG_PXA_PCMCIA)
  73. #define CHECK_IDE_DEVICE
  74. #endif
  75. #ifdef CHECK_IDE_DEVICE
  76. int ide_devices_found;
  77. static uchar *known_cards[] = {
  78. (uchar *)"ARGOSY PnPIDE D5",
  79. NULL
  80. };
  81. #define MAX_TUPEL_SZ 512
  82. #define MAX_FEATURES 4
  83. #define MAX_IDENT_CHARS 64
  84. #define MAX_IDENT_FIELDS 4
  85. #define indent "\t "
  86. static void print_funcid (int func)
  87. {
  88. puts (indent);
  89. switch (func) {
  90. case CISTPL_FUNCID_MULTI:
  91. puts (" Multi-Function");
  92. break;
  93. case CISTPL_FUNCID_MEMORY:
  94. puts (" Memory");
  95. break;
  96. case CISTPL_FUNCID_SERIAL:
  97. puts (" Serial Port");
  98. break;
  99. case CISTPL_FUNCID_PARALLEL:
  100. puts (" Parallel Port");
  101. break;
  102. case CISTPL_FUNCID_FIXED:
  103. puts (" Fixed Disk");
  104. break;
  105. case CISTPL_FUNCID_VIDEO:
  106. puts (" Video Adapter");
  107. break;
  108. case CISTPL_FUNCID_NETWORK:
  109. puts (" Network Adapter");
  110. break;
  111. case CISTPL_FUNCID_AIMS:
  112. puts (" AIMS Card");
  113. break;
  114. case CISTPL_FUNCID_SCSI:
  115. puts (" SCSI Adapter");
  116. break;
  117. default:
  118. puts (" Unknown");
  119. break;
  120. }
  121. puts (" Card\n");
  122. }
  123. static void print_fixed (volatile uchar *p)
  124. {
  125. if (p == NULL)
  126. return;
  127. puts(indent);
  128. switch (*p) {
  129. case CISTPL_FUNCE_IDE_IFACE:
  130. { uchar iface = *(p+2);
  131. puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
  132. puts (" interface ");
  133. break;
  134. }
  135. case CISTPL_FUNCE_IDE_MASTER:
  136. case CISTPL_FUNCE_IDE_SLAVE:
  137. { uchar f1 = *(p+2);
  138. uchar f2 = *(p+4);
  139. puts ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
  140. if (f1 & CISTPL_IDE_UNIQUE)
  141. puts (" [unique]");
  142. puts ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
  143. if (f2 & CISTPL_IDE_HAS_SLEEP)
  144. puts (" [sleep]");
  145. if (f2 & CISTPL_IDE_HAS_STANDBY)
  146. puts (" [standby]");
  147. if (f2 & CISTPL_IDE_HAS_IDLE)
  148. puts (" [idle]");
  149. if (f2 & CISTPL_IDE_LOW_POWER)
  150. puts (" [low power]");
  151. if (f2 & CISTPL_IDE_REG_INHIBIT)
  152. puts (" [reg inhibit]");
  153. if (f2 & CISTPL_IDE_HAS_INDEX)
  154. puts (" [index]");
  155. if (f2 & CISTPL_IDE_IOIS16)
  156. puts (" [IOis16]");
  157. break;
  158. }
  159. }
  160. putc ('\n');
  161. }
  162. static int identify (volatile uchar *p)
  163. {
  164. uchar id_str[MAX_IDENT_CHARS];
  165. uchar data;
  166. uchar *t;
  167. uchar **card;
  168. int i, done;
  169. if (p == NULL)
  170. return (0); /* Don't know */
  171. t = id_str;
  172. done =0;
  173. for (i=0; i<=4 && !done; ++i, p+=2) {
  174. while ((data = *p) != '\0') {
  175. if (data == 0xFF) {
  176. done = 1;
  177. break;
  178. }
  179. *t++ = data;
  180. if (t == &id_str[MAX_IDENT_CHARS-1]) {
  181. done = 1;
  182. break;
  183. }
  184. p += 2;
  185. }
  186. if (!done)
  187. *t++ = ' ';
  188. }
  189. *t = '\0';
  190. while (--t > id_str) {
  191. if (*t == ' ')
  192. *t = '\0';
  193. else
  194. break;
  195. }
  196. puts ((char *)id_str);
  197. putc ('\n');
  198. for (card=known_cards; *card; ++card) {
  199. debug ("## Compare against \"%s\"\n", *card);
  200. if (strcmp((char *)*card, (char *)id_str) == 0) { /* found! */
  201. debug ("## CARD FOUND ##\n");
  202. return (1);
  203. }
  204. }
  205. return (0); /* don't know */
  206. }
  207. int check_ide_device (int slot)
  208. {
  209. volatile uchar *ident = NULL;
  210. volatile uchar *feature_p[MAX_FEATURES];
  211. volatile uchar *p, *start, *addr;
  212. int n_features = 0;
  213. uchar func_id = ~0;
  214. uchar code, len;
  215. ushort config_base = 0;
  216. int found = 0;
  217. int i;
  218. addr = (volatile uchar *)(CONFIG_SYS_PCMCIA_MEM_ADDR +
  219. CONFIG_SYS_PCMCIA_MEM_SIZE * (slot * 4));
  220. debug ("PCMCIA MEM: %08lX\n", (ulong)addr);
  221. start = p = (volatile uchar *) addr;
  222. while ((p - start) < MAX_TUPEL_SZ) {
  223. code = *p; p += 2;
  224. if (code == 0xFF) { /* End of chain */
  225. break;
  226. }
  227. len = *p; p += 2;
  228. #if defined(DEBUG) && (DEBUG > 1)
  229. { volatile uchar *q = p;
  230. printf ("\nTuple code %02x length %d\n\tData:",
  231. code, len);
  232. for (i = 0; i < len; ++i) {
  233. printf (" %02x", *q);
  234. q+= 2;
  235. }
  236. }
  237. #endif /* DEBUG */
  238. switch (code) {
  239. case CISTPL_VERS_1:
  240. ident = p + 4;
  241. break;
  242. case CISTPL_FUNCID:
  243. /* Fix for broken SanDisk which may have 0x80 bit set */
  244. func_id = *p & 0x7F;
  245. break;
  246. case CISTPL_FUNCE:
  247. if (n_features < MAX_FEATURES)
  248. feature_p[n_features++] = p;
  249. break;
  250. case CISTPL_CONFIG:
  251. config_base = (*(p+6) << 8) + (*(p+4));
  252. debug ("\n## Config_base = %04x ###\n", config_base);
  253. default:
  254. break;
  255. }
  256. p += 2 * len;
  257. }
  258. found = identify (ident);
  259. if (func_id != ((uchar)~0)) {
  260. print_funcid (func_id);
  261. if (func_id == CISTPL_FUNCID_FIXED)
  262. found = 1;
  263. else
  264. return (1); /* no disk drive */
  265. }
  266. for (i=0; i<n_features; ++i) {
  267. print_fixed (feature_p[i]);
  268. }
  269. if (!found) {
  270. printf ("unknown card type\n");
  271. return (1);
  272. }
  273. ide_devices_found |= (1 << slot);
  274. /* set I/O area in config reg -> only valid for ARGOSY D5!!! */
  275. *((uchar *)(addr + config_base)) = 1;
  276. #if 0
  277. printf("\n## Config_base = %04x ###\n", config_base);
  278. printf("Configuration Option Register: %02x @ %x\n", readb(addr + config_base), addr + config_base);
  279. printf("Card Configuration and Status Register: %02x\n", readb(addr + config_base + 2));
  280. printf("Pin Replacement Register Register: %02x\n", readb(addr + config_base + 4));
  281. printf("Socket and Copy Register: %02x\n", readb(addr + config_base + 6));
  282. #endif
  283. return (0);
  284. }
  285. #endif /* CHECK_IDE_DEVICE */