pcmcia.c 7.1 KB

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  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. /* #define DEBUG 1 */
  35. /*
  36. * PCMCIA support
  37. */
  38. #include <common.h>
  39. #include <command.h>
  40. #include <config.h>
  41. #include <pcmcia.h>
  42. #include <asm/io.h>
  43. /* -------------------------------------------------------------------- */
  44. #if defined(CONFIG_CMD_PCMCIA)
  45. extern int pcmcia_on (void);
  46. extern int pcmcia_off (void);
  47. int do_pinit (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  48. {
  49. int rcode = 0;
  50. if (argc != 2) {
  51. printf ("Usage: pinit {on | off}\n");
  52. return 1;
  53. }
  54. if (strcmp(argv[1],"on") == 0) {
  55. rcode = pcmcia_on ();
  56. } else if (strcmp(argv[1],"off") == 0) {
  57. rcode = pcmcia_off ();
  58. } else {
  59. printf ("Usage: pinit {on | off}\n");
  60. return 1;
  61. }
  62. return rcode;
  63. }
  64. U_BOOT_CMD(
  65. pinit, 2, 0, do_pinit,
  66. "PCMCIA sub-system",
  67. "on - power on PCMCIA socket\n"
  68. "pinit off - power off PCMCIA socket"
  69. );
  70. #endif
  71. /* -------------------------------------------------------------------- */
  72. #undef CHECK_IDE_DEVICE
  73. #if defined(CONFIG_PXA_PCMCIA)
  74. #define CHECK_IDE_DEVICE
  75. #endif
  76. #ifdef CHECK_IDE_DEVICE
  77. int ide_devices_found;
  78. static uchar *known_cards[] = {
  79. (uchar *)"ARGOSY PnPIDE D5",
  80. NULL
  81. };
  82. #define MAX_TUPEL_SZ 512
  83. #define MAX_FEATURES 4
  84. #define MAX_IDENT_CHARS 64
  85. #define MAX_IDENT_FIELDS 4
  86. #define indent "\t "
  87. static void print_funcid (int func)
  88. {
  89. puts (indent);
  90. switch (func) {
  91. case CISTPL_FUNCID_MULTI:
  92. puts (" Multi-Function");
  93. break;
  94. case CISTPL_FUNCID_MEMORY:
  95. puts (" Memory");
  96. break;
  97. case CISTPL_FUNCID_SERIAL:
  98. puts (" Serial Port");
  99. break;
  100. case CISTPL_FUNCID_PARALLEL:
  101. puts (" Parallel Port");
  102. break;
  103. case CISTPL_FUNCID_FIXED:
  104. puts (" Fixed Disk");
  105. break;
  106. case CISTPL_FUNCID_VIDEO:
  107. puts (" Video Adapter");
  108. break;
  109. case CISTPL_FUNCID_NETWORK:
  110. puts (" Network Adapter");
  111. break;
  112. case CISTPL_FUNCID_AIMS:
  113. puts (" AIMS Card");
  114. break;
  115. case CISTPL_FUNCID_SCSI:
  116. puts (" SCSI Adapter");
  117. break;
  118. default:
  119. puts (" Unknown");
  120. break;
  121. }
  122. puts (" Card\n");
  123. }
  124. static void print_fixed (volatile uchar *p)
  125. {
  126. if (p == NULL)
  127. return;
  128. puts(indent);
  129. switch (*p) {
  130. case CISTPL_FUNCE_IDE_IFACE:
  131. { uchar iface = *(p+2);
  132. puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
  133. puts (" interface ");
  134. break;
  135. }
  136. case CISTPL_FUNCE_IDE_MASTER:
  137. case CISTPL_FUNCE_IDE_SLAVE:
  138. { uchar f1 = *(p+2);
  139. uchar f2 = *(p+4);
  140. puts ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
  141. if (f1 & CISTPL_IDE_UNIQUE)
  142. puts (" [unique]");
  143. puts ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
  144. if (f2 & CISTPL_IDE_HAS_SLEEP)
  145. puts (" [sleep]");
  146. if (f2 & CISTPL_IDE_HAS_STANDBY)
  147. puts (" [standby]");
  148. if (f2 & CISTPL_IDE_HAS_IDLE)
  149. puts (" [idle]");
  150. if (f2 & CISTPL_IDE_LOW_POWER)
  151. puts (" [low power]");
  152. if (f2 & CISTPL_IDE_REG_INHIBIT)
  153. puts (" [reg inhibit]");
  154. if (f2 & CISTPL_IDE_HAS_INDEX)
  155. puts (" [index]");
  156. if (f2 & CISTPL_IDE_IOIS16)
  157. puts (" [IOis16]");
  158. break;
  159. }
  160. }
  161. putc ('\n');
  162. }
  163. static int identify (volatile uchar *p)
  164. {
  165. uchar id_str[MAX_IDENT_CHARS];
  166. uchar data;
  167. uchar *t;
  168. uchar **card;
  169. int i, done;
  170. if (p == NULL)
  171. return (0); /* Don't know */
  172. t = id_str;
  173. done =0;
  174. for (i=0; i<=4 && !done; ++i, p+=2) {
  175. while ((data = *p) != '\0') {
  176. if (data == 0xFF) {
  177. done = 1;
  178. break;
  179. }
  180. *t++ = data;
  181. if (t == &id_str[MAX_IDENT_CHARS-1]) {
  182. done = 1;
  183. break;
  184. }
  185. p += 2;
  186. }
  187. if (!done)
  188. *t++ = ' ';
  189. }
  190. *t = '\0';
  191. while (--t > id_str) {
  192. if (*t == ' ')
  193. *t = '\0';
  194. else
  195. break;
  196. }
  197. puts ((char *)id_str);
  198. putc ('\n');
  199. for (card=known_cards; *card; ++card) {
  200. debug ("## Compare against \"%s\"\n", *card);
  201. if (strcmp((char *)*card, (char *)id_str) == 0) { /* found! */
  202. debug ("## CARD FOUND ##\n");
  203. return (1);
  204. }
  205. }
  206. return (0); /* don't know */
  207. }
  208. int check_ide_device (int slot)
  209. {
  210. volatile uchar *ident = NULL;
  211. volatile uchar *feature_p[MAX_FEATURES];
  212. volatile uchar *p, *start, *addr;
  213. int n_features = 0;
  214. uchar func_id = ~0;
  215. uchar code, len;
  216. ushort config_base = 0;
  217. int found = 0;
  218. int i;
  219. addr = (volatile uchar *)(CONFIG_SYS_PCMCIA_MEM_ADDR +
  220. CONFIG_SYS_PCMCIA_MEM_SIZE * (slot * 4));
  221. debug ("PCMCIA MEM: %08lX\n", (ulong)addr);
  222. start = p = (volatile uchar *) addr;
  223. while ((p - start) < MAX_TUPEL_SZ) {
  224. code = *p; p += 2;
  225. if (code == 0xFF) { /* End of chain */
  226. break;
  227. }
  228. len = *p; p += 2;
  229. #if defined(DEBUG) && (DEBUG > 1)
  230. { volatile uchar *q = p;
  231. printf ("\nTuple code %02x length %d\n\tData:",
  232. code, len);
  233. for (i = 0; i < len; ++i) {
  234. printf (" %02x", *q);
  235. q+= 2;
  236. }
  237. }
  238. #endif /* DEBUG */
  239. switch (code) {
  240. case CISTPL_VERS_1:
  241. ident = p + 4;
  242. break;
  243. case CISTPL_FUNCID:
  244. /* Fix for broken SanDisk which may have 0x80 bit set */
  245. func_id = *p & 0x7F;
  246. break;
  247. case CISTPL_FUNCE:
  248. if (n_features < MAX_FEATURES)
  249. feature_p[n_features++] = p;
  250. break;
  251. case CISTPL_CONFIG:
  252. config_base = (*(p+6) << 8) + (*(p+4));
  253. debug ("\n## Config_base = %04x ###\n", config_base);
  254. default:
  255. break;
  256. }
  257. p += 2 * len;
  258. }
  259. found = identify (ident);
  260. if (func_id != ((uchar)~0)) {
  261. print_funcid (func_id);
  262. if (func_id == CISTPL_FUNCID_FIXED)
  263. found = 1;
  264. else
  265. return (1); /* no disk drive */
  266. }
  267. for (i=0; i<n_features; ++i) {
  268. print_fixed (feature_p[i]);
  269. }
  270. if (!found) {
  271. printf ("unknown card type\n");
  272. return (1);
  273. }
  274. ide_devices_found |= (1 << slot);
  275. /* set I/O area in config reg -> only valid for ARGOSY D5!!! */
  276. *((uchar *)(addr + config_base)) = 1;
  277. #if 0
  278. printf("\n## Config_base = %04x ###\n", config_base);
  279. printf("Configuration Option Register: %02x @ %x\n", readb(addr + config_base), addr + config_base);
  280. printf("Card Configuration and Status Register: %02x\n", readb(addr + config_base + 2));
  281. printf("Pin Replacement Register Register: %02x\n", readb(addr + config_base + 4));
  282. printf("Socket and Copy Register: %02x\n", readb(addr + config_base + 6));
  283. #endif
  284. return (0);
  285. }
  286. #endif /* CHECK_IDE_DEVICE */