2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
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
48 #ifdef CONFIG_DRIVER_SMC91111
49 #include "../drivers/smc91111.h"
51 #ifdef CONFIG_DRIVER_LAN91C96
52 #include "../drivers/lan91c96.h"
55 DECLARE_GLOBAL_DATA_PTR;
57 #if defined(CONFIG_CMD_NAND)
58 void nand_init (void);
61 ulong monitor_flash_len;
63 #ifdef CONFIG_HAS_DATAFLASH
64 extern int AT91F_DataflashInit(void);
65 extern void dataflash_print_info(void);
68 #ifndef CONFIG_IDENT_STRING
69 #define CONFIG_IDENT_STRING ""
72 const char version_string[] =
73 U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
75 #ifdef CONFIG_DRIVER_CS8900
76 extern void cs8900_get_enetaddr (uchar * addr);
79 #ifdef CONFIG_DRIVER_RTL8019
80 extern void rtl8019_get_enetaddr (uchar * addr);
84 * Begin and End of memory area for malloc(), and current "brk"
86 static ulong mem_malloc_start = 0;
87 static ulong mem_malloc_end = 0;
88 static ulong mem_malloc_brk = 0;
91 void mem_malloc_init (ulong dest_addr)
93 mem_malloc_start = dest_addr;
94 mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
95 mem_malloc_brk = mem_malloc_start;
97 memset ((void *) mem_malloc_start, 0,
98 mem_malloc_end - mem_malloc_start);
101 void *sbrk (ptrdiff_t increment)
103 ulong old = mem_malloc_brk;
104 ulong new = old + increment;
106 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
109 mem_malloc_brk = new;
111 return ((void *) old);
114 /************************************************************************
115 * Coloured LED functionality
116 ************************************************************************
117 * May be supplied by boards if desired
119 void inline __coloured_LED_init (void) {}
120 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
121 void inline __red_LED_on (void) {}
122 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
123 void inline __red_LED_off(void) {}
124 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
125 void inline __green_LED_on(void) {}
126 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
127 void inline __green_LED_off(void) {}
128 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
129 void inline __yellow_LED_on(void) {}
130 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
131 void inline __yellow_LED_off(void) {}
132 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
138 /************************************************************************
140 ************************************************************************
141 * Some of this code should be moved into the core functions,
142 * or dropped completely,
143 * but let's get it working (again) first...
146 static int init_baudrate (void)
148 char tmp[64]; /* long enough for environment variables */
149 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
150 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
151 ? (int) simple_strtoul (tmp, NULL, 10)
157 static int display_banner (void)
159 printf ("\n\n%s\n\n", version_string);
160 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
161 _armboot_start, _bss_start, _bss_end);
162 #ifdef CONFIG_MODEM_SUPPORT
163 debug ("Modem Support enabled\n");
165 #ifdef CONFIG_USE_IRQ
166 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
167 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
174 * WARNING: this code looks "cleaner" than the PowerPC version, but
175 * has the disadvantage that you either get nothing, or everything.
176 * On PowerPC, you might see "DRAM: " before the system hangs - which
177 * gives a simple yet clear indication which part of the
178 * initialization if failing.
180 static int display_dram_config (void)
185 puts ("RAM Configuration:\n");
187 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
188 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
189 print_size (gd->bd->bi_dram[i].size, "\n");
194 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
195 size += gd->bd->bi_dram[i].size;
198 print_size(size, "\n");
205 static void display_flash_config (ulong size)
208 print_size (size, "\n");
210 #endif /* CFG_NO_FLASH */
214 * Breathe some life into the board...
216 * Initialize a serial port as console, and carry out some hardware
219 * The first part of initialization is running from Flash memory;
220 * its main purpose is to initialize the RAM so that we
221 * can relocate the monitor code to RAM.
225 * All attempts to come up with a "common" initialization sequence
226 * that works for all boards and architectures failed: some of the
227 * requirements are just _too_ different. To get rid of the resulting
228 * mess of board dependent #ifdef'ed code we now make the whole
229 * initialization sequence configurable to the user.
231 * The requirements for any new initalization function is simple: it
232 * receives a pointer to the "global data" structure as it's only
233 * argument, and returns an integer return code, where 0 means
234 * "continue" and != 0 means "fatal error, hang the system".
236 typedef int (init_fnc_t) (void);
238 int print_cpuinfo (void); /* test-only */
240 init_fnc_t *init_sequence[] = {
241 cpu_init, /* basic cpu dependent setup */
242 board_init, /* basic board dependent setup */
243 interrupt_init, /* set up exceptions */
244 env_init, /* initialize environment */
245 init_baudrate, /* initialze baudrate settings */
246 serial_init, /* serial communications setup */
247 console_init_f, /* stage 1 init of console */
248 display_banner, /* say that we are here */
249 #if defined(CONFIG_DISPLAY_CPUINFO)
250 print_cpuinfo, /* display cpu info (and speed) */
252 #if defined(CONFIG_DISPLAY_BOARDINFO)
253 checkboard, /* display board info */
255 dram_init, /* configure available RAM banks */
260 void start_armboot (void)
262 init_fnc_t **init_fnc_ptr;
267 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
271 /* Pointer is writable since we allocated a register for it */
272 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
273 /* compiler optimization barrier needed for GCC >= 3.4 */
274 __asm__ __volatile__("": : :"memory");
276 memset ((void*)gd, 0, sizeof (gd_t));
277 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
278 memset (gd->bd, 0, sizeof (bd_t));
280 monitor_flash_len = _bss_start - _armboot_start;
282 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
283 if ((*init_fnc_ptr)() != 0) {
289 /* configure available FLASH banks */
290 size = flash_init ();
291 display_flash_config (size);
292 #endif /* CFG_NO_FLASH */
296 # define PAGE_SIZE 4096
299 * reserve memory for VFD display (always full pages)
301 /* bss_end is defined in the board-specific linker script */
302 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
303 size = vfd_setmem (addr);
305 #endif /* CONFIG_VFD */
309 # define PAGE_SIZE 4096
312 * reserve memory for LCD display (always full pages)
314 /* bss_end is defined in the board-specific linker script */
315 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
316 size = lcd_setmem (addr);
318 #endif /* CONFIG_LCD */
320 /* armboot_start is defined in the board-specific linker script */
321 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
323 #if defined(CONFIG_CMD_NAND)
325 nand_init(); /* go init the NAND */
328 #ifdef CONFIG_HAS_DATAFLASH
329 AT91F_DataflashInit();
330 dataflash_print_info();
333 /* initialize environment */
337 /* must do this after the framebuffer is allocated */
339 #endif /* CONFIG_VFD */
341 #ifdef CONFIG_SERIAL_MULTI
346 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
355 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
356 s = (i > 0) ? tmp : NULL;
358 for (reg = 0; reg < 6; ++reg) {
359 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
361 s = (*e) ? e + 1 : e;
364 #ifdef CONFIG_HAS_ETH1
365 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
366 s = (i > 0) ? tmp : NULL;
368 for (reg = 0; reg < 6; ++reg) {
369 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
371 s = (*e) ? e + 1 : e;
376 devices_init (); /* get the devices list going. */
378 #ifdef CONFIG_CMC_PU2
379 load_sernum_ethaddr ();
380 #endif /* CONFIG_CMC_PU2 */
384 console_init_r (); /* fully init console as a device */
386 #if defined(CONFIG_MISC_INIT_R)
387 /* miscellaneous platform dependent initialisations */
391 /* enable exceptions */
392 enable_interrupts ();
394 /* Perform network card initialisation if necessary */
395 #ifdef CONFIG_DRIVER_TI_EMAC
396 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
397 if (getenv ("ethaddr")) {
398 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
402 #ifdef CONFIG_DRIVER_CS8900
403 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
406 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
407 if (getenv ("ethaddr")) {
408 smc_set_mac_addr(gd->bd->bi_enetaddr);
410 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
412 /* Initialize from environment */
413 if ((s = getenv ("loadaddr")) != NULL) {
414 load_addr = simple_strtoul (s, NULL, 16);
416 #if defined(CONFIG_CMD_NET)
417 if ((s = getenv ("bootfile")) != NULL) {
418 copy_filename (BootFile, s, sizeof (BootFile));
422 #ifdef BOARD_LATE_INIT
425 #if defined(CONFIG_CMD_NET)
426 #if defined(CONFIG_NET_MULTI)
429 eth_initialize(gd->bd);
431 /* main_loop() can return to retry autoboot, if so just run it again. */
436 /* NOTREACHED - no way out of command loop except booting */
441 puts ("### ERROR ### Please RESET the board ###\n");
445 #ifdef CONFIG_MODEM_SUPPORT
446 static inline void mdm_readline(char *buf, int bufsiz);
448 /* called from main loop (common/main.c) */
449 extern void dbg(const char *fmt, ...);
455 extern char console_buffer[];
456 extern void enable_putc(void);
457 extern int hwflow_onoff(int);
459 enable_putc(); /* enable serial_putc() */
462 init_str = getenv("mdm_flow_control");
463 if (init_str && (strcmp(init_str, "rts/cts") == 0))
470 sprintf(env_str, "mdm_init%d", i);
471 if ((init_str = getenv(env_str)) != NULL) {
472 serial_puts(init_str);
475 mdm_readline(console_buffer, CFG_CBSIZE);
476 dbg("ini%d: [%s]", i, console_buffer);
478 if ((strcmp(console_buffer, "OK") == 0) ||
479 (strcmp(console_buffer, "ERROR") == 0)) {
480 dbg("ini%d: cmd done", i);
482 } else /* in case we are originating call ... */
483 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
484 dbg("ini%d: connect", i);
489 break; /* no init string - stop modem init */
496 /* final stage - wait for connect */
497 for(;i > 1;) { /* if 'i' > 1 - wait for connection
498 message from modem */
499 mdm_readline(console_buffer, CFG_CBSIZE);
500 dbg("ini_f: [%s]", console_buffer);
501 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
502 dbg("ini_f: connected");
510 /* 'inline' - We have to do it fast */
511 static inline void mdm_readline(char *buf, int bufsiz)
522 /* dbg("(%c)", c); */
534 return; /* sanity check */
542 #endif /* CONFIG_MODEM_SUPPORT */