2 * (C) Copyright 2002-2006
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 * To match the U-Boot user interface on ARM platforms to the U-Boot
30 * standard (as on PPC platforms), some messages with debug character
31 * are removed from the default U-Boot build.
33 * Define DEBUG here if you want additional info as shown below
34 * printed upon startup:
36 * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
49 #ifdef CONFIG_DRIVER_SMC91111
50 #include "../drivers/net/smc91111.h"
52 #ifdef CONFIG_DRIVER_LAN91C96
53 #include "../drivers/net/lan91c96.h"
56 DECLARE_GLOBAL_DATA_PTR;
58 #if defined(CONFIG_CMD_NAND)
59 void nand_init (void);
62 #if defined(CONFIG_CMD_ONENAND)
63 void onenand_init(void);
66 ulong monitor_flash_len;
68 #ifdef CONFIG_HAS_DATAFLASH
69 extern int AT91F_DataflashInit(void);
70 extern void dataflash_print_info(void);
73 #ifndef CONFIG_IDENT_STRING
74 #define CONFIG_IDENT_STRING ""
77 const char version_string[] =
78 U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
80 #ifdef CONFIG_DRIVER_CS8900
81 extern void cs8900_get_enetaddr (uchar * addr);
84 #ifdef CONFIG_DRIVER_RTL8019
85 extern void rtl8019_get_enetaddr (uchar * addr);
88 #if defined(CONFIG_HARD_I2C) || \
89 defined(CONFIG_SOFT_I2C)
94 * Begin and End of memory area for malloc(), and current "brk"
96 static ulong mem_malloc_start = 0;
97 static ulong mem_malloc_end = 0;
98 static ulong mem_malloc_brk = 0;
101 void mem_malloc_init (ulong dest_addr)
103 mem_malloc_start = dest_addr;
104 mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
105 mem_malloc_brk = mem_malloc_start;
107 memset ((void *) mem_malloc_start, 0,
108 mem_malloc_end - mem_malloc_start);
111 void *sbrk (ptrdiff_t increment)
113 ulong old = mem_malloc_brk;
114 ulong new = old + increment;
116 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
119 mem_malloc_brk = new;
121 return ((void *) old);
124 char *strmhz(char *buf, long hz)
130 l = sprintf (buf, "%ld", n);
131 m = (hz % 1000000L) / 1000L;
133 sprintf (buf + l, ".%03ld", m);
138 /************************************************************************
139 * Coloured LED functionality
140 ************************************************************************
141 * May be supplied by boards if desired
143 void inline __coloured_LED_init (void) {}
144 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
145 void inline __red_LED_on (void) {}
146 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
147 void inline __red_LED_off(void) {}
148 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
149 void inline __green_LED_on(void) {}
150 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
151 void inline __green_LED_off(void) {}
152 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
153 void inline __yellow_LED_on(void) {}
154 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
155 void inline __yellow_LED_off(void) {}
156 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
158 /************************************************************************
160 ************************************************************************
161 * Some of this code should be moved into the core functions,
162 * or dropped completely,
163 * but let's get it working (again) first...
166 static int init_baudrate (void)
168 char tmp[64]; /* long enough for environment variables */
169 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
170 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
171 ? (int) simple_strtoul (tmp, NULL, 10)
177 static int display_banner (void)
179 printf ("\n\n%s\n\n", version_string);
180 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
181 _armboot_start, _bss_start, _bss_end);
182 #ifdef CONFIG_MODEM_SUPPORT
183 debug ("Modem Support enabled\n");
185 #ifdef CONFIG_USE_IRQ
186 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
187 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
194 * WARNING: this code looks "cleaner" than the PowerPC version, but
195 * has the disadvantage that you either get nothing, or everything.
196 * On PowerPC, you might see "DRAM: " before the system hangs - which
197 * gives a simple yet clear indication which part of the
198 * initialization if failing.
200 static int display_dram_config (void)
205 puts ("RAM Configuration:\n");
207 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
208 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
209 print_size (gd->bd->bi_dram[i].size, "\n");
214 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
215 size += gd->bd->bi_dram[i].size;
218 print_size(size, "\n");
225 static void display_flash_config (ulong size)
228 print_size (size, "\n");
230 #endif /* CFG_NO_FLASH */
232 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
233 static int init_func_i2c (void)
236 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
243 * Breathe some life into the board...
245 * Initialize a serial port as console, and carry out some hardware
248 * The first part of initialization is running from Flash memory;
249 * its main purpose is to initialize the RAM so that we
250 * can relocate the monitor code to RAM.
254 * All attempts to come up with a "common" initialization sequence
255 * that works for all boards and architectures failed: some of the
256 * requirements are just _too_ different. To get rid of the resulting
257 * mess of board dependent #ifdef'ed code we now make the whole
258 * initialization sequence configurable to the user.
260 * The requirements for any new initalization function is simple: it
261 * receives a pointer to the "global data" structure as it's only
262 * argument, and returns an integer return code, where 0 means
263 * "continue" and != 0 means "fatal error, hang the system".
265 typedef int (init_fnc_t) (void);
267 int print_cpuinfo (void); /* test-only */
269 init_fnc_t *init_sequence[] = {
270 cpu_init, /* basic cpu dependent setup */
271 board_init, /* basic board dependent setup */
272 interrupt_init, /* set up exceptions */
273 env_init, /* initialize environment */
274 init_baudrate, /* initialze baudrate settings */
275 serial_init, /* serial communications setup */
276 console_init_f, /* stage 1 init of console */
277 display_banner, /* say that we are here */
278 #if defined(CONFIG_DISPLAY_CPUINFO)
279 print_cpuinfo, /* display cpu info (and speed) */
281 #if defined(CONFIG_DISPLAY_BOARDINFO)
282 checkboard, /* display board info */
284 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
287 dram_init, /* configure available RAM banks */
292 void start_armboot (void)
294 init_fnc_t **init_fnc_ptr;
296 #if !defined(CFG_NO_FLASH) || defined (CONFIG_VFD) || defined(CONFIG_LCD)
299 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
303 /* Pointer is writable since we allocated a register for it */
304 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
305 /* compiler optimization barrier needed for GCC >= 3.4 */
306 __asm__ __volatile__("": : :"memory");
308 memset ((void*)gd, 0, sizeof (gd_t));
309 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
310 memset (gd->bd, 0, sizeof (bd_t));
312 monitor_flash_len = _bss_start - _armboot_start;
314 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
315 if ((*init_fnc_ptr)() != 0) {
321 /* configure available FLASH banks */
322 size = flash_init ();
323 display_flash_config (size);
324 #endif /* CFG_NO_FLASH */
328 # define PAGE_SIZE 4096
331 * reserve memory for VFD display (always full pages)
333 /* bss_end is defined in the board-specific linker script */
334 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
335 size = vfd_setmem (addr);
337 #endif /* CONFIG_VFD */
340 /* board init may have inited fb_base */
343 # define PAGE_SIZE 4096
346 * reserve memory for LCD display (always full pages)
348 /* bss_end is defined in the board-specific linker script */
349 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
350 size = lcd_setmem (addr);
353 #endif /* CONFIG_LCD */
355 /* armboot_start is defined in the board-specific linker script */
356 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
358 #if defined(CONFIG_CMD_NAND)
360 nand_init(); /* go init the NAND */
363 #if defined(CONFIG_CMD_ONENAND)
367 #ifdef CONFIG_HAS_DATAFLASH
368 AT91F_DataflashInit();
369 dataflash_print_info();
372 /* initialize environment */
376 /* must do this after the framebuffer is allocated */
378 #endif /* CONFIG_VFD */
380 #ifdef CONFIG_SERIAL_MULTI
385 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
394 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
395 s = (i > 0) ? tmp : NULL;
397 for (reg = 0; reg < 6; ++reg) {
398 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
400 s = (*e) ? e + 1 : e;
403 #ifdef CONFIG_HAS_ETH1
404 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
405 s = (i > 0) ? tmp : NULL;
407 for (reg = 0; reg < 6; ++reg) {
408 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
410 s = (*e) ? e + 1 : e;
415 devices_init (); /* get the devices list going. */
417 #ifdef CONFIG_CMC_PU2
418 load_sernum_ethaddr ();
419 #endif /* CONFIG_CMC_PU2 */
423 console_init_r (); /* fully init console as a device */
425 #if defined(CONFIG_MISC_INIT_R)
426 /* miscellaneous platform dependent initialisations */
430 /* enable exceptions */
431 enable_interrupts ();
433 /* Perform network card initialisation if necessary */
434 #ifdef CONFIG_DRIVER_TI_EMAC
435 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
436 if (getenv ("ethaddr")) {
437 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
441 #ifdef CONFIG_DRIVER_CS8900
442 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
445 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
446 if (getenv ("ethaddr")) {
447 smc_set_mac_addr(gd->bd->bi_enetaddr);
449 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
451 /* Initialize from environment */
452 if ((s = getenv ("loadaddr")) != NULL) {
453 load_addr = simple_strtoul (s, NULL, 16);
455 #if defined(CONFIG_CMD_NET)
456 if ((s = getenv ("bootfile")) != NULL) {
457 copy_filename (BootFile, s, sizeof (BootFile));
461 #ifdef BOARD_LATE_INIT
464 #if defined(CONFIG_CMD_NET)
465 #if defined(CONFIG_NET_MULTI)
468 eth_initialize(gd->bd);
469 #if defined(CONFIG_RESET_PHY_R)
470 debug ("Reset Ethernet PHY\n");
474 /* main_loop() can return to retry autoboot, if so just run it again. */
479 /* NOTREACHED - no way out of command loop except booting */
484 puts ("### ERROR ### Please RESET the board ###\n");
488 #ifdef CONFIG_MODEM_SUPPORT
489 static inline void mdm_readline(char *buf, int bufsiz);
491 /* called from main loop (common/main.c) */
492 extern void dbg(const char *fmt, ...);
498 extern char console_buffer[];
499 extern void enable_putc(void);
500 extern int hwflow_onoff(int);
502 enable_putc(); /* enable serial_putc() */
505 init_str = getenv("mdm_flow_control");
506 if (init_str && (strcmp(init_str, "rts/cts") == 0))
513 sprintf(env_str, "mdm_init%d", i);
514 if ((init_str = getenv(env_str)) != NULL) {
515 serial_puts(init_str);
518 mdm_readline(console_buffer, CFG_CBSIZE);
519 dbg("ini%d: [%s]", i, console_buffer);
521 if ((strcmp(console_buffer, "OK") == 0) ||
522 (strcmp(console_buffer, "ERROR") == 0)) {
523 dbg("ini%d: cmd done", i);
525 } else /* in case we are originating call ... */
526 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
527 dbg("ini%d: connect", i);
532 break; /* no init string - stop modem init */
539 /* final stage - wait for connect */
540 for(;i > 1;) { /* if 'i' > 1 - wait for connection
541 message from modem */
542 mdm_readline(console_buffer, CFG_CBSIZE);
543 dbg("ini_f: [%s]", console_buffer);
544 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
545 dbg("ini_f: connected");
553 /* 'inline' - We have to do it fast */
554 static inline void mdm_readline(char *buf, int bufsiz)
565 /* dbg("(%c)", c); */
577 return; /* sanity check */
585 #endif /* CONFIG_MODEM_SUPPORT */