board.c 12 KB

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  1. /*
  2. * (C) Copyright 2002-2006
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * (C) Copyright 2002
  6. * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  7. * Marius Groeger <mgroeger@sysgo.de>
  8. *
  9. * See file CREDITS for list of people who contributed to this
  10. * project.
  11. *
  12. * This program is free software; you can redistribute it and/or
  13. * modify it under the terms of the GNU General Public License as
  14. * published by the Free Software Foundation; either version 2 of
  15. * the License, or (at your option) any later version.
  16. *
  17. * This program is distributed in the hope that it will be useful,
  18. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20. * GNU General Public License for more details.
  21. *
  22. * You should have received a copy of the GNU General Public License
  23. * along with this program; if not, write to the Free Software
  24. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25. * MA 02111-1307 USA
  26. */
  27. /*
  28. * To match the U-Boot user interface on ARM platforms to the U-Boot
  29. * standard (as on PPC platforms), some messages with debug character
  30. * are removed from the default U-Boot build.
  31. *
  32. * Define DEBUG here if you want additional info as shown below
  33. * printed upon startup:
  34. *
  35. * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
  36. * IRQ Stack: 00ebff7c
  37. * FIQ Stack: 00ebef7c
  38. */
  39. #include <common.h>
  40. #include <command.h>
  41. #include <malloc.h>
  42. #include <stdio_dev.h>
  43. #include <timestamp.h>
  44. #include <version.h>
  45. #include <net.h>
  46. #include <serial.h>
  47. #include <nand.h>
  48. #include <onenand_uboot.h>
  49. #include <mmc.h>
  50. #ifdef CONFIG_BITBANGMII
  51. #include <miiphy.h>
  52. #endif
  53. #ifdef CONFIG_DRIVER_SMC91111
  54. #include "../drivers/net/smc91111.h"
  55. #endif
  56. #ifdef CONFIG_DRIVER_LAN91C96
  57. #include "../drivers/net/lan91c96.h"
  58. #endif
  59. DECLARE_GLOBAL_DATA_PTR;
  60. ulong monitor_flash_len;
  61. #ifdef CONFIG_HAS_DATAFLASH
  62. extern int AT91F_DataflashInit(void);
  63. extern void dataflash_print_info(void);
  64. #endif
  65. #ifndef CONFIG_IDENT_STRING
  66. #define CONFIG_IDENT_STRING ""
  67. #endif
  68. const char version_string[] =
  69. U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
  70. #ifdef CONFIG_DRIVER_RTL8019
  71. extern void rtl8019_get_enetaddr (uchar * addr);
  72. #endif
  73. #if defined(CONFIG_HARD_I2C) || \
  74. defined(CONFIG_SOFT_I2C)
  75. #include <i2c.h>
  76. #endif
  77. /************************************************************************
  78. * Coloured LED functionality
  79. ************************************************************************
  80. * May be supplied by boards if desired
  81. */
  82. void inline __coloured_LED_init (void) {}
  83. void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
  84. void inline __red_LED_on (void) {}
  85. void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
  86. void inline __red_LED_off(void) {}
  87. void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
  88. void inline __green_LED_on(void) {}
  89. void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
  90. void inline __green_LED_off(void) {}
  91. void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
  92. void inline __yellow_LED_on(void) {}
  93. void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
  94. void inline __yellow_LED_off(void) {}
  95. void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
  96. void inline __blue_LED_on(void) {}
  97. void inline blue_LED_on(void)__attribute__((weak, alias("__blue_LED_on")));
  98. void inline __blue_LED_off(void) {}
  99. void inline blue_LED_off(void)__attribute__((weak, alias("__blue_LED_off")));
  100. /************************************************************************
  101. * Init Utilities *
  102. ************************************************************************
  103. * Some of this code should be moved into the core functions,
  104. * or dropped completely,
  105. * but let's get it working (again) first...
  106. */
  107. #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
  108. #define CONFIG_BAUDRATE 115200
  109. #endif
  110. static int init_baudrate (void)
  111. {
  112. char tmp[64]; /* long enough for environment variables */
  113. int i = getenv_r ("baudrate", tmp, sizeof (tmp));
  114. gd->bd->bi_baudrate = gd->baudrate = (i > 0)
  115. ? (int) simple_strtoul (tmp, NULL, 10)
  116. : CONFIG_BAUDRATE;
  117. return (0);
  118. }
  119. static int display_banner (void)
  120. {
  121. printf ("\n\n%s\n\n", version_string);
  122. debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
  123. _armboot_start, _bss_start, _bss_end);
  124. #ifdef CONFIG_MODEM_SUPPORT
  125. debug ("Modem Support enabled\n");
  126. #endif
  127. #ifdef CONFIG_USE_IRQ
  128. debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
  129. debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
  130. #endif
  131. return (0);
  132. }
  133. /*
  134. * WARNING: this code looks "cleaner" than the PowerPC version, but
  135. * has the disadvantage that you either get nothing, or everything.
  136. * On PowerPC, you might see "DRAM: " before the system hangs - which
  137. * gives a simple yet clear indication which part of the
  138. * initialization if failing.
  139. */
  140. static int display_dram_config (void)
  141. {
  142. int i;
  143. #ifdef DEBUG
  144. puts ("RAM Configuration:\n");
  145. for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
  146. printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
  147. print_size (gd->bd->bi_dram[i].size, "\n");
  148. }
  149. #else
  150. ulong size = 0;
  151. for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
  152. size += gd->bd->bi_dram[i].size;
  153. }
  154. puts("DRAM: ");
  155. print_size(size, "\n");
  156. #endif
  157. return (0);
  158. }
  159. #ifndef CONFIG_SYS_NO_FLASH
  160. static void display_flash_config (ulong size)
  161. {
  162. puts ("Flash: ");
  163. print_size (size, "\n");
  164. }
  165. #endif /* CONFIG_SYS_NO_FLASH */
  166. #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
  167. static int init_func_i2c (void)
  168. {
  169. puts ("I2C: ");
  170. i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
  171. puts ("ready\n");
  172. return (0);
  173. }
  174. #endif
  175. #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
  176. #include <pci.h>
  177. static int arm_pci_init(void)
  178. {
  179. pci_init();
  180. return 0;
  181. }
  182. #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
  183. /*
  184. * Breathe some life into the board...
  185. *
  186. * Initialize a serial port as console, and carry out some hardware
  187. * tests.
  188. *
  189. * The first part of initialization is running from Flash memory;
  190. * its main purpose is to initialize the RAM so that we
  191. * can relocate the monitor code to RAM.
  192. */
  193. /*
  194. * All attempts to come up with a "common" initialization sequence
  195. * that works for all boards and architectures failed: some of the
  196. * requirements are just _too_ different. To get rid of the resulting
  197. * mess of board dependent #ifdef'ed code we now make the whole
  198. * initialization sequence configurable to the user.
  199. *
  200. * The requirements for any new initalization function is simple: it
  201. * receives a pointer to the "global data" structure as it's only
  202. * argument, and returns an integer return code, where 0 means
  203. * "continue" and != 0 means "fatal error, hang the system".
  204. */
  205. typedef int (init_fnc_t) (void);
  206. int print_cpuinfo (void);
  207. init_fnc_t *init_sequence[] = {
  208. #if defined(CONFIG_ARCH_CPU_INIT)
  209. arch_cpu_init, /* basic arch cpu dependent setup */
  210. #endif
  211. board_init, /* basic board dependent setup */
  212. #if defined(CONFIG_USE_IRQ)
  213. interrupt_init, /* set up exceptions */
  214. #endif
  215. timer_init, /* initialize timer */
  216. env_init, /* initialize environment */
  217. init_baudrate, /* initialze baudrate settings */
  218. serial_init, /* serial communications setup */
  219. console_init_f, /* stage 1 init of console */
  220. display_banner, /* say that we are here */
  221. #if defined(CONFIG_DISPLAY_CPUINFO)
  222. print_cpuinfo, /* display cpu info (and speed) */
  223. #endif
  224. #if defined(CONFIG_DISPLAY_BOARDINFO)
  225. checkboard, /* display board info */
  226. #endif
  227. #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
  228. init_func_i2c,
  229. #endif
  230. dram_init, /* configure available RAM banks */
  231. #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
  232. arm_pci_init,
  233. #endif
  234. display_dram_config,
  235. NULL,
  236. };
  237. void start_armboot (void)
  238. {
  239. init_fnc_t **init_fnc_ptr;
  240. char *s;
  241. #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
  242. unsigned long addr;
  243. #endif
  244. /* Pointer is writable since we allocated a register for it */
  245. gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
  246. /* compiler optimization barrier needed for GCC >= 3.4 */
  247. __asm__ __volatile__("": : :"memory");
  248. memset ((void*)gd, 0, sizeof (gd_t));
  249. gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
  250. memset (gd->bd, 0, sizeof (bd_t));
  251. gd->flags |= GD_FLG_RELOC;
  252. monitor_flash_len = _bss_start - _armboot_start;
  253. for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
  254. if ((*init_fnc_ptr)() != 0) {
  255. hang ();
  256. }
  257. }
  258. /* armboot_start is defined in the board-specific linker script */
  259. mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
  260. CONFIG_SYS_MALLOC_LEN);
  261. #ifndef CONFIG_SYS_NO_FLASH
  262. /* configure available FLASH banks */
  263. display_flash_config (flash_init ());
  264. #endif /* CONFIG_SYS_NO_FLASH */
  265. #ifdef CONFIG_VFD
  266. # ifndef PAGE_SIZE
  267. # define PAGE_SIZE 4096
  268. # endif
  269. /*
  270. * reserve memory for VFD display (always full pages)
  271. */
  272. /* bss_end is defined in the board-specific linker script */
  273. addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
  274. vfd_setmem (addr);
  275. gd->fb_base = addr;
  276. #endif /* CONFIG_VFD */
  277. #ifdef CONFIG_LCD
  278. /* board init may have inited fb_base */
  279. if (!gd->fb_base) {
  280. # ifndef PAGE_SIZE
  281. # define PAGE_SIZE 4096
  282. # endif
  283. /*
  284. * reserve memory for LCD display (always full pages)
  285. */
  286. /* bss_end is defined in the board-specific linker script */
  287. addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
  288. lcd_setmem (addr);
  289. gd->fb_base = addr;
  290. }
  291. #endif /* CONFIG_LCD */
  292. #if defined(CONFIG_CMD_NAND)
  293. puts ("NAND: ");
  294. nand_init(); /* go init the NAND */
  295. #endif
  296. #if defined(CONFIG_CMD_ONENAND)
  297. onenand_init();
  298. #endif
  299. #ifdef CONFIG_HAS_DATAFLASH
  300. AT91F_DataflashInit();
  301. dataflash_print_info();
  302. #endif
  303. /* initialize environment */
  304. env_relocate ();
  305. #ifdef CONFIG_VFD
  306. /* must do this after the framebuffer is allocated */
  307. drv_vfd_init();
  308. #endif /* CONFIG_VFD */
  309. #ifdef CONFIG_SERIAL_MULTI
  310. serial_initialize();
  311. #endif
  312. /* IP Address */
  313. gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
  314. stdio_init (); /* get the devices list going. */
  315. jumptable_init ();
  316. #if defined(CONFIG_API)
  317. /* Initialize API */
  318. api_init ();
  319. #endif
  320. console_init_r (); /* fully init console as a device */
  321. #if defined(CONFIG_ARCH_MISC_INIT)
  322. /* miscellaneous arch dependent initialisations */
  323. arch_misc_init ();
  324. #endif
  325. #if defined(CONFIG_MISC_INIT_R)
  326. /* miscellaneous platform dependent initialisations */
  327. misc_init_r ();
  328. #endif
  329. /* enable exceptions */
  330. enable_interrupts ();
  331. /* Perform network card initialisation if necessary */
  332. #ifdef CONFIG_DRIVER_TI_EMAC
  333. /* XXX: this needs to be moved to board init */
  334. extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
  335. if (getenv ("ethaddr")) {
  336. uchar enetaddr[6];
  337. eth_getenv_enetaddr("ethaddr", enetaddr);
  338. davinci_eth_set_mac_addr(enetaddr);
  339. }
  340. #endif
  341. #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
  342. /* XXX: this needs to be moved to board init */
  343. if (getenv ("ethaddr")) {
  344. uchar enetaddr[6];
  345. eth_getenv_enetaddr("ethaddr", enetaddr);
  346. smc_set_mac_addr(enetaddr);
  347. }
  348. #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
  349. /* Initialize from environment */
  350. if ((s = getenv ("loadaddr")) != NULL) {
  351. load_addr = simple_strtoul (s, NULL, 16);
  352. }
  353. #if defined(CONFIG_CMD_NET)
  354. if ((s = getenv ("bootfile")) != NULL) {
  355. copy_filename (BootFile, s, sizeof (BootFile));
  356. }
  357. #endif
  358. #ifdef BOARD_LATE_INIT
  359. board_late_init ();
  360. #endif
  361. #ifdef CONFIG_GENERIC_MMC
  362. puts ("MMC: ");
  363. mmc_initialize (gd->bd);
  364. #endif
  365. #ifdef CONFIG_BITBANGMII
  366. bb_miiphy_init();
  367. #endif
  368. #if defined(CONFIG_CMD_NET)
  369. #if defined(CONFIG_NET_MULTI)
  370. puts ("Net: ");
  371. #endif
  372. eth_initialize(gd->bd);
  373. #if defined(CONFIG_RESET_PHY_R)
  374. debug ("Reset Ethernet PHY\n");
  375. reset_phy();
  376. #endif
  377. #endif
  378. /* main_loop() can return to retry autoboot, if so just run it again. */
  379. for (;;) {
  380. main_loop ();
  381. }
  382. /* NOTREACHED - no way out of command loop except booting */
  383. }
  384. void hang (void)
  385. {
  386. puts ("### ERROR ### Please RESET the board ###\n");
  387. for (;;);
  388. }