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/net/smc91111.h"
51 #ifdef CONFIG_DRIVER_LAN91C96
52 #include "../drivers/net/lan91c96.h"
55 DECLARE_GLOBAL_DATA_PTR;
57 #if defined(CONFIG_CMD_NAND)
58 void nand_init (void);
61 #if defined(CONFIG_CMD_ONENAND)
62 void onenand_init(void);
65 ulong monitor_flash_len;
67 #ifdef CONFIG_HAS_DATAFLASH
68 extern int AT91F_DataflashInit(void);
69 extern void dataflash_print_info(void);
72 #ifndef CONFIG_IDENT_STRING
73 #define CONFIG_IDENT_STRING ""
76 const char version_string[] =
77 U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
79 #ifdef CONFIG_DRIVER_CS8900
80 extern void cs8900_get_enetaddr (uchar * addr);
83 #ifdef CONFIG_DRIVER_RTL8019
84 extern void rtl8019_get_enetaddr (uchar * addr);
88 * Begin and End of memory area for malloc(), and current "brk"
90 static ulong mem_malloc_start = 0;
91 static ulong mem_malloc_end = 0;
92 static ulong mem_malloc_brk = 0;
95 void mem_malloc_init (ulong dest_addr)
97 mem_malloc_start = dest_addr;
98 mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
99 mem_malloc_brk = mem_malloc_start;
101 memset ((void *) mem_malloc_start, 0,
102 mem_malloc_end - mem_malloc_start);
105 void *sbrk (ptrdiff_t increment)
107 ulong old = mem_malloc_brk;
108 ulong new = old + increment;
110 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
113 mem_malloc_brk = new;
115 return ((void *) old);
118 /************************************************************************
119 * Coloured LED functionality
120 ************************************************************************
121 * May be supplied by boards if desired
123 void inline __coloured_LED_init (void) {}
124 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
125 void inline __red_LED_on (void) {}
126 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
127 void inline __red_LED_off(void) {}
128 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
129 void inline __green_LED_on(void) {}
130 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
131 void inline __green_LED_off(void) {}
132 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
133 void inline __yellow_LED_on(void) {}
134 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
135 void inline __yellow_LED_off(void) {}
136 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 */
213 * Breathe some life into the board...
215 * Initialize a serial port as console, and carry out some hardware
218 * The first part of initialization is running from Flash memory;
219 * its main purpose is to initialize the RAM so that we
220 * can relocate the monitor code to RAM.
224 * All attempts to come up with a "common" initialization sequence
225 * that works for all boards and architectures failed: some of the
226 * requirements are just _too_ different. To get rid of the resulting
227 * mess of board dependent #ifdef'ed code we now make the whole
228 * initialization sequence configurable to the user.
230 * The requirements for any new initalization function is simple: it
231 * receives a pointer to the "global data" structure as it's only
232 * argument, and returns an integer return code, where 0 means
233 * "continue" and != 0 means "fatal error, hang the system".
235 typedef int (init_fnc_t) (void);
237 int print_cpuinfo (void); /* test-only */
239 init_fnc_t *init_sequence[] = {
240 cpu_init, /* basic cpu dependent setup */
241 board_init, /* basic board dependent setup */
242 interrupt_init, /* set up exceptions */
243 env_init, /* initialize environment */
244 init_baudrate, /* initialze baudrate settings */
245 serial_init, /* serial communications setup */
246 console_init_f, /* stage 1 init of console */
247 display_banner, /* say that we are here */
248 #if defined(CONFIG_DISPLAY_CPUINFO)
249 print_cpuinfo, /* display cpu info (and speed) */
251 #if defined(CONFIG_DISPLAY_BOARDINFO)
252 checkboard, /* display board info */
254 dram_init, /* configure available RAM banks */
259 void start_armboot (void)
261 init_fnc_t **init_fnc_ptr;
266 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
270 /* Pointer is writable since we allocated a register for it */
271 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
272 /* compiler optimization barrier needed for GCC >= 3.4 */
273 __asm__ __volatile__("": : :"memory");
275 memset ((void*)gd, 0, sizeof (gd_t));
276 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
277 memset (gd->bd, 0, sizeof (bd_t));
279 monitor_flash_len = _bss_start - _armboot_start;
281 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
282 if ((*init_fnc_ptr)() != 0) {
288 /* configure available FLASH banks */
289 size = flash_init ();
290 display_flash_config (size);
291 #endif /* CFG_NO_FLASH */
295 # define PAGE_SIZE 4096
298 * reserve memory for VFD display (always full pages)
300 /* bss_end is defined in the board-specific linker script */
301 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
302 size = vfd_setmem (addr);
304 #endif /* CONFIG_VFD */
308 # define PAGE_SIZE 4096
311 * reserve memory for LCD display (always full pages)
313 /* bss_end is defined in the board-specific linker script */
314 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
315 size = lcd_setmem (addr);
317 #endif /* CONFIG_LCD */
319 /* armboot_start is defined in the board-specific linker script */
320 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
322 #if defined(CONFIG_CMD_NAND)
324 nand_init(); /* go init the NAND */
327 #if defined(CONFIG_CMD_ONENAND)
331 #ifdef CONFIG_HAS_DATAFLASH
332 AT91F_DataflashInit();
333 dataflash_print_info();
336 /* initialize environment */
340 /* must do this after the framebuffer is allocated */
342 #endif /* CONFIG_VFD */
344 #ifdef CONFIG_SERIAL_MULTI
349 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
358 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
359 s = (i > 0) ? tmp : NULL;
361 for (reg = 0; reg < 6; ++reg) {
362 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
364 s = (*e) ? e + 1 : e;
367 #ifdef CONFIG_HAS_ETH1
368 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
369 s = (i > 0) ? tmp : NULL;
371 for (reg = 0; reg < 6; ++reg) {
372 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
374 s = (*e) ? e + 1 : e;
379 devices_init (); /* get the devices list going. */
381 #ifdef CONFIG_CMC_PU2
382 load_sernum_ethaddr ();
383 #endif /* CONFIG_CMC_PU2 */
387 console_init_r (); /* fully init console as a device */
389 #if defined(CONFIG_MISC_INIT_R)
390 /* miscellaneous platform dependent initialisations */
394 /* enable exceptions */
395 enable_interrupts ();
397 /* Perform network card initialisation if necessary */
398 #ifdef CONFIG_DRIVER_TI_EMAC
399 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
400 if (getenv ("ethaddr")) {
401 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
405 #ifdef CONFIG_DRIVER_CS8900
406 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
409 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
410 if (getenv ("ethaddr")) {
411 smc_set_mac_addr(gd->bd->bi_enetaddr);
413 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
415 /* Initialize from environment */
416 if ((s = getenv ("loadaddr")) != NULL) {
417 load_addr = simple_strtoul (s, NULL, 16);
419 #if defined(CONFIG_CMD_NET)
420 if ((s = getenv ("bootfile")) != NULL) {
421 copy_filename (BootFile, s, sizeof (BootFile));
425 #ifdef BOARD_LATE_INIT
428 #if defined(CONFIG_CMD_NET)
429 #if defined(CONFIG_NET_MULTI)
432 eth_initialize(gd->bd);
433 #if defined(CONFIG_RESET_PHY_R)
434 debug ("Reset Ethernet PHY\n");
438 /* main_loop() can return to retry autoboot, if so just run it again. */
443 /* NOTREACHED - no way out of command loop except booting */
448 puts ("### ERROR ### Please RESET the board ###\n");
452 #ifdef CONFIG_MODEM_SUPPORT
453 static inline void mdm_readline(char *buf, int bufsiz);
455 /* called from main loop (common/main.c) */
456 extern void dbg(const char *fmt, ...);
462 extern char console_buffer[];
463 extern void enable_putc(void);
464 extern int hwflow_onoff(int);
466 enable_putc(); /* enable serial_putc() */
469 init_str = getenv("mdm_flow_control");
470 if (init_str && (strcmp(init_str, "rts/cts") == 0))
477 sprintf(env_str, "mdm_init%d", i);
478 if ((init_str = getenv(env_str)) != NULL) {
479 serial_puts(init_str);
482 mdm_readline(console_buffer, CFG_CBSIZE);
483 dbg("ini%d: [%s]", i, console_buffer);
485 if ((strcmp(console_buffer, "OK") == 0) ||
486 (strcmp(console_buffer, "ERROR") == 0)) {
487 dbg("ini%d: cmd done", i);
489 } else /* in case we are originating call ... */
490 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
491 dbg("ini%d: connect", i);
496 break; /* no init string - stop modem init */
503 /* final stage - wait for connect */
504 for(;i > 1;) { /* if 'i' > 1 - wait for connection
505 message from modem */
506 mdm_readline(console_buffer, CFG_CBSIZE);
507 dbg("ini_f: [%s]", console_buffer);
508 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
509 dbg("ini_f: connected");
517 /* 'inline' - We have to do it fast */
518 static inline void mdm_readline(char *buf, int bufsiz)
529 /* dbg("(%c)", c); */
541 return; /* sanity check */
549 #endif /* CONFIG_MODEM_SUPPORT */