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);
87 #if defined(CONFIG_HARD_I2C) || \
88 defined(CONFIG_SOFT_I2C)
93 * Begin and End of memory area for malloc(), and current "brk"
95 static ulong mem_malloc_start = 0;
96 static ulong mem_malloc_end = 0;
97 static ulong mem_malloc_brk = 0;
100 void mem_malloc_init (ulong dest_addr)
102 mem_malloc_start = dest_addr;
103 mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
104 mem_malloc_brk = mem_malloc_start;
106 memset ((void *) mem_malloc_start, 0,
107 mem_malloc_end - mem_malloc_start);
110 void *sbrk (ptrdiff_t increment)
112 ulong old = mem_malloc_brk;
113 ulong new = old + increment;
115 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
118 mem_malloc_brk = new;
120 return ((void *) old);
123 /************************************************************************
124 * Coloured LED functionality
125 ************************************************************************
126 * May be supplied by boards if desired
128 void inline __coloured_LED_init (void) {}
129 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
130 void inline __red_LED_on (void) {}
131 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
132 void inline __red_LED_off(void) {}
133 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
134 void inline __green_LED_on(void) {}
135 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
136 void inline __green_LED_off(void) {}
137 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
138 void inline __yellow_LED_on(void) {}
139 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
140 void inline __yellow_LED_off(void) {}
141 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
143 /************************************************************************
145 ************************************************************************
146 * Some of this code should be moved into the core functions,
147 * or dropped completely,
148 * but let's get it working (again) first...
151 static int init_baudrate (void)
153 char tmp[64]; /* long enough for environment variables */
154 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
155 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
156 ? (int) simple_strtoul (tmp, NULL, 10)
162 static int display_banner (void)
164 printf ("\n\n%s\n\n", version_string);
165 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
166 _armboot_start, _bss_start, _bss_end);
167 #ifdef CONFIG_MODEM_SUPPORT
168 debug ("Modem Support enabled\n");
170 #ifdef CONFIG_USE_IRQ
171 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
172 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
179 * WARNING: this code looks "cleaner" than the PowerPC version, but
180 * has the disadvantage that you either get nothing, or everything.
181 * On PowerPC, you might see "DRAM: " before the system hangs - which
182 * gives a simple yet clear indication which part of the
183 * initialization if failing.
185 static int display_dram_config (void)
190 puts ("RAM Configuration:\n");
192 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
193 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
194 print_size (gd->bd->bi_dram[i].size, "\n");
199 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
200 size += gd->bd->bi_dram[i].size;
203 print_size(size, "\n");
210 static void display_flash_config (ulong size)
213 print_size (size, "\n");
215 #endif /* CFG_NO_FLASH */
217 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
218 static int init_func_i2c (void)
221 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
228 * Breathe some life into the board...
230 * Initialize a serial port as console, and carry out some hardware
233 * The first part of initialization is running from Flash memory;
234 * its main purpose is to initialize the RAM so that we
235 * can relocate the monitor code to RAM.
239 * All attempts to come up with a "common" initialization sequence
240 * that works for all boards and architectures failed: some of the
241 * requirements are just _too_ different. To get rid of the resulting
242 * mess of board dependent #ifdef'ed code we now make the whole
243 * initialization sequence configurable to the user.
245 * The requirements for any new initalization function is simple: it
246 * receives a pointer to the "global data" structure as it's only
247 * argument, and returns an integer return code, where 0 means
248 * "continue" and != 0 means "fatal error, hang the system".
250 typedef int (init_fnc_t) (void);
252 int print_cpuinfo (void); /* test-only */
254 init_fnc_t *init_sequence[] = {
255 cpu_init, /* basic cpu dependent setup */
256 board_init, /* basic board dependent setup */
257 interrupt_init, /* set up exceptions */
258 env_init, /* initialize environment */
259 init_baudrate, /* initialze baudrate settings */
260 serial_init, /* serial communications setup */
261 console_init_f, /* stage 1 init of console */
262 display_banner, /* say that we are here */
263 #if defined(CONFIG_DISPLAY_CPUINFO)
264 print_cpuinfo, /* display cpu info (and speed) */
266 #if defined(CONFIG_DISPLAY_BOARDINFO)
267 checkboard, /* display board info */
269 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
272 dram_init, /* configure available RAM banks */
277 void start_armboot (void)
279 init_fnc_t **init_fnc_ptr;
284 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
288 /* Pointer is writable since we allocated a register for it */
289 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
290 /* compiler optimization barrier needed for GCC >= 3.4 */
291 __asm__ __volatile__("": : :"memory");
293 memset ((void*)gd, 0, sizeof (gd_t));
294 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
295 memset (gd->bd, 0, sizeof (bd_t));
297 monitor_flash_len = _bss_start - _armboot_start;
299 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
300 if ((*init_fnc_ptr)() != 0) {
306 /* configure available FLASH banks */
307 size = flash_init ();
308 display_flash_config (size);
309 #endif /* CFG_NO_FLASH */
313 # define PAGE_SIZE 4096
316 * reserve memory for VFD display (always full pages)
318 /* bss_end is defined in the board-specific linker script */
319 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
320 size = vfd_setmem (addr);
322 #endif /* CONFIG_VFD */
326 # define PAGE_SIZE 4096
329 * reserve memory for LCD display (always full pages)
331 /* bss_end is defined in the board-specific linker script */
332 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
333 size = lcd_setmem (addr);
335 #endif /* CONFIG_LCD */
337 /* armboot_start is defined in the board-specific linker script */
338 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
340 #if defined(CONFIG_CMD_NAND)
342 nand_init(); /* go init the NAND */
345 #if defined(CONFIG_CMD_ONENAND)
349 #ifdef CONFIG_HAS_DATAFLASH
350 AT91F_DataflashInit();
351 dataflash_print_info();
354 /* initialize environment */
358 /* must do this after the framebuffer is allocated */
360 #endif /* CONFIG_VFD */
362 #ifdef CONFIG_SERIAL_MULTI
367 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
376 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
377 s = (i > 0) ? tmp : NULL;
379 for (reg = 0; reg < 6; ++reg) {
380 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
382 s = (*e) ? e + 1 : e;
385 #ifdef CONFIG_HAS_ETH1
386 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
387 s = (i > 0) ? tmp : NULL;
389 for (reg = 0; reg < 6; ++reg) {
390 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
392 s = (*e) ? e + 1 : e;
397 devices_init (); /* get the devices list going. */
399 #ifdef CONFIG_CMC_PU2
400 load_sernum_ethaddr ();
401 #endif /* CONFIG_CMC_PU2 */
405 console_init_r (); /* fully init console as a device */
407 #if defined(CONFIG_MISC_INIT_R)
408 /* miscellaneous platform dependent initialisations */
412 /* enable exceptions */
413 enable_interrupts ();
415 /* Perform network card initialisation if necessary */
416 #ifdef CONFIG_DRIVER_TI_EMAC
417 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
418 if (getenv ("ethaddr")) {
419 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
423 #ifdef CONFIG_DRIVER_CS8900
424 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
427 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
428 if (getenv ("ethaddr")) {
429 smc_set_mac_addr(gd->bd->bi_enetaddr);
431 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
433 /* Initialize from environment */
434 if ((s = getenv ("loadaddr")) != NULL) {
435 load_addr = simple_strtoul (s, NULL, 16);
437 #if defined(CONFIG_CMD_NET)
438 if ((s = getenv ("bootfile")) != NULL) {
439 copy_filename (BootFile, s, sizeof (BootFile));
443 #ifdef BOARD_LATE_INIT
446 #if defined(CONFIG_CMD_NET)
447 #if defined(CONFIG_NET_MULTI)
450 eth_initialize(gd->bd);
451 #if defined(CONFIG_RESET_PHY_R)
452 debug ("Reset Ethernet PHY\n");
456 /* main_loop() can return to retry autoboot, if so just run it again. */
461 /* NOTREACHED - no way out of command loop except booting */
466 puts ("### ERROR ### Please RESET the board ###\n");
470 #ifdef CONFIG_MODEM_SUPPORT
471 static inline void mdm_readline(char *buf, int bufsiz);
473 /* called from main loop (common/main.c) */
474 extern void dbg(const char *fmt, ...);
480 extern char console_buffer[];
481 extern void enable_putc(void);
482 extern int hwflow_onoff(int);
484 enable_putc(); /* enable serial_putc() */
487 init_str = getenv("mdm_flow_control");
488 if (init_str && (strcmp(init_str, "rts/cts") == 0))
495 sprintf(env_str, "mdm_init%d", i);
496 if ((init_str = getenv(env_str)) != NULL) {
497 serial_puts(init_str);
500 mdm_readline(console_buffer, CFG_CBSIZE);
501 dbg("ini%d: [%s]", i, console_buffer);
503 if ((strcmp(console_buffer, "OK") == 0) ||
504 (strcmp(console_buffer, "ERROR") == 0)) {
505 dbg("ini%d: cmd done", i);
507 } else /* in case we are originating call ... */
508 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
509 dbg("ini%d: connect", i);
514 break; /* no init string - stop modem init */
521 /* final stage - wait for connect */
522 for(;i > 1;) { /* if 'i' > 1 - wait for connection
523 message from modem */
524 mdm_readline(console_buffer, CFG_CBSIZE);
525 dbg("ini_f: [%s]", console_buffer);
526 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
527 dbg("ini_f: connected");
535 /* 'inline' - We have to do it fast */
536 static inline void mdm_readline(char *buf, int bufsiz)
547 /* dbg("(%c)", c); */
559 return; /* sanity check */
567 #endif /* CONFIG_MODEM_SUPPORT */