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")));
134 /************************************************************************
136 ************************************************************************
137 * Some of this code should be moved into the core functions,
138 * or dropped completely,
139 * but let's get it working (again) first...
142 static int init_baudrate (void)
144 char tmp[64]; /* long enough for environment variables */
145 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
146 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
147 ? (int) simple_strtoul (tmp, NULL, 10)
153 static int display_banner (void)
155 printf ("\n\n%s\n\n", version_string);
156 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
157 _armboot_start, _bss_start, _bss_end);
158 #ifdef CONFIG_MODEM_SUPPORT
159 debug ("Modem Support enabled\n");
161 #ifdef CONFIG_USE_IRQ
162 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
163 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
170 * WARNING: this code looks "cleaner" than the PowerPC version, but
171 * has the disadvantage that you either get nothing, or everything.
172 * On PowerPC, you might see "DRAM: " before the system hangs - which
173 * gives a simple yet clear indication which part of the
174 * initialization if failing.
176 static int display_dram_config (void)
181 puts ("RAM Configuration:\n");
183 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
184 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
185 print_size (gd->bd->bi_dram[i].size, "\n");
190 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
191 size += gd->bd->bi_dram[i].size;
194 print_size(size, "\n");
201 static void display_flash_config (ulong size)
204 print_size (size, "\n");
206 #endif /* CFG_NO_FLASH */
209 * Breathe some life into the board...
211 * Initialize a serial port as console, and carry out some hardware
214 * The first part of initialization is running from Flash memory;
215 * its main purpose is to initialize the RAM so that we
216 * can relocate the monitor code to RAM.
220 * All attempts to come up with a "common" initialization sequence
221 * that works for all boards and architectures failed: some of the
222 * requirements are just _too_ different. To get rid of the resulting
223 * mess of board dependent #ifdef'ed code we now make the whole
224 * initialization sequence configurable to the user.
226 * The requirements for any new initalization function is simple: it
227 * receives a pointer to the "global data" structure as it's only
228 * argument, and returns an integer return code, where 0 means
229 * "continue" and != 0 means "fatal error, hang the system".
231 typedef int (init_fnc_t) (void);
233 int print_cpuinfo (void); /* test-only */
235 init_fnc_t *init_sequence[] = {
236 cpu_init, /* basic cpu dependent setup */
237 board_init, /* basic board dependent setup */
238 interrupt_init, /* set up exceptions */
239 env_init, /* initialize environment */
240 init_baudrate, /* initialze baudrate settings */
241 serial_init, /* serial communications setup */
242 console_init_f, /* stage 1 init of console */
243 display_banner, /* say that we are here */
244 #if defined(CONFIG_DISPLAY_CPUINFO)
245 print_cpuinfo, /* display cpu info (and speed) */
247 #if defined(CONFIG_DISPLAY_BOARDINFO)
248 checkboard, /* display board info */
250 dram_init, /* configure available RAM banks */
255 void start_armboot (void)
257 init_fnc_t **init_fnc_ptr;
262 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
266 /* Pointer is writable since we allocated a register for it */
267 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
268 /* compiler optimization barrier needed for GCC >= 3.4 */
269 __asm__ __volatile__("": : :"memory");
271 memset ((void*)gd, 0, sizeof (gd_t));
272 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
273 memset (gd->bd, 0, sizeof (bd_t));
275 monitor_flash_len = _bss_start - _armboot_start;
277 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
278 if ((*init_fnc_ptr)() != 0) {
284 /* configure available FLASH banks */
285 size = flash_init ();
286 display_flash_config (size);
287 #endif /* CFG_NO_FLASH */
291 # define PAGE_SIZE 4096
294 * reserve memory for VFD display (always full pages)
296 /* bss_end is defined in the board-specific linker script */
297 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
298 size = vfd_setmem (addr);
300 #endif /* CONFIG_VFD */
304 # define PAGE_SIZE 4096
307 * reserve memory for LCD display (always full pages)
309 /* bss_end is defined in the board-specific linker script */
310 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
311 size = lcd_setmem (addr);
313 #endif /* CONFIG_LCD */
315 /* armboot_start is defined in the board-specific linker script */
316 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
318 #if defined(CONFIG_CMD_NAND)
320 nand_init(); /* go init the NAND */
323 #ifdef CONFIG_HAS_DATAFLASH
324 AT91F_DataflashInit();
325 dataflash_print_info();
328 /* initialize environment */
332 /* must do this after the framebuffer is allocated */
334 #endif /* CONFIG_VFD */
336 #ifdef CONFIG_SERIAL_MULTI
341 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
350 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
351 s = (i > 0) ? tmp : NULL;
353 for (reg = 0; reg < 6; ++reg) {
354 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
356 s = (*e) ? e + 1 : e;
359 #ifdef CONFIG_HAS_ETH1
360 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
361 s = (i > 0) ? tmp : NULL;
363 for (reg = 0; reg < 6; ++reg) {
364 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
366 s = (*e) ? e + 1 : e;
371 devices_init (); /* get the devices list going. */
373 #ifdef CONFIG_CMC_PU2
374 load_sernum_ethaddr ();
375 #endif /* CONFIG_CMC_PU2 */
379 console_init_r (); /* fully init console as a device */
381 #if defined(CONFIG_MISC_INIT_R)
382 /* miscellaneous platform dependent initialisations */
386 /* enable exceptions */
387 enable_interrupts ();
389 /* Perform network card initialisation if necessary */
390 #ifdef CONFIG_DRIVER_TI_EMAC
391 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
392 if (getenv ("ethaddr")) {
393 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
397 #ifdef CONFIG_DRIVER_CS8900
398 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
401 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
402 if (getenv ("ethaddr")) {
403 smc_set_mac_addr(gd->bd->bi_enetaddr);
405 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
407 /* Initialize from environment */
408 if ((s = getenv ("loadaddr")) != NULL) {
409 load_addr = simple_strtoul (s, NULL, 16);
411 #if defined(CONFIG_CMD_NET)
412 if ((s = getenv ("bootfile")) != NULL) {
413 copy_filename (BootFile, s, sizeof (BootFile));
417 #ifdef BOARD_LATE_INIT
420 #if defined(CONFIG_CMD_NET)
421 #if defined(CONFIG_NET_MULTI)
424 eth_initialize(gd->bd);
426 /* main_loop() can return to retry autoboot, if so just run it again. */
431 /* NOTREACHED - no way out of command loop except booting */
436 puts ("### ERROR ### Please RESET the board ###\n");
440 #ifdef CONFIG_MODEM_SUPPORT
441 static inline void mdm_readline(char *buf, int bufsiz);
443 /* called from main loop (common/main.c) */
444 extern void dbg(const char *fmt, ...);
450 extern char console_buffer[];
451 extern void enable_putc(void);
452 extern int hwflow_onoff(int);
454 enable_putc(); /* enable serial_putc() */
457 init_str = getenv("mdm_flow_control");
458 if (init_str && (strcmp(init_str, "rts/cts") == 0))
465 sprintf(env_str, "mdm_init%d", i);
466 if ((init_str = getenv(env_str)) != NULL) {
467 serial_puts(init_str);
470 mdm_readline(console_buffer, CFG_CBSIZE);
471 dbg("ini%d: [%s]", i, console_buffer);
473 if ((strcmp(console_buffer, "OK") == 0) ||
474 (strcmp(console_buffer, "ERROR") == 0)) {
475 dbg("ini%d: cmd done", i);
477 } else /* in case we are originating call ... */
478 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
479 dbg("ini%d: connect", i);
484 break; /* no init string - stop modem init */
491 /* final stage - wait for connect */
492 for(;i > 1;) { /* if 'i' > 1 - wait for connection
493 message from modem */
494 mdm_readline(console_buffer, CFG_CBSIZE);
495 dbg("ini_f: [%s]", console_buffer);
496 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
497 dbg("ini_f: connected");
505 /* 'inline' - We have to do it fast */
506 static inline void mdm_readline(char *buf, int bufsiz)
517 /* dbg("(%c)", c); */
529 return; /* sanity check */
537 #endif /* CONFIG_MODEM_SUPPORT */