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
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 /************************************************************************
125 * Coloured LED functionality
126 ************************************************************************
127 * May be supplied by boards if desired
129 void inline __coloured_LED_init (void) {}
130 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
131 void inline __red_LED_on (void) {}
132 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
133 void inline __red_LED_off(void) {}
134 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
135 void inline __green_LED_on(void) {}
136 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
137 void inline __green_LED_off(void) {}
138 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
139 void inline __yellow_LED_on(void) {}
140 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
141 void inline __yellow_LED_off(void) {}
142 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
144 /************************************************************************
146 ************************************************************************
147 * Some of this code should be moved into the core functions,
148 * or dropped completely,
149 * but let's get it working (again) first...
152 static int init_baudrate (void)
154 char tmp[64]; /* long enough for environment variables */
155 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
156 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
157 ? (int) simple_strtoul (tmp, NULL, 10)
163 static int display_banner (void)
165 printf ("\n\n%s\n\n", version_string);
166 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
167 _armboot_start, _bss_start, _bss_end);
168 #ifdef CONFIG_MODEM_SUPPORT
169 debug ("Modem Support enabled\n");
171 #ifdef CONFIG_USE_IRQ
172 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
173 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
180 * WARNING: this code looks "cleaner" than the PowerPC version, but
181 * has the disadvantage that you either get nothing, or everything.
182 * On PowerPC, you might see "DRAM: " before the system hangs - which
183 * gives a simple yet clear indication which part of the
184 * initialization if failing.
186 static int display_dram_config (void)
191 puts ("RAM Configuration:\n");
193 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
194 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
195 print_size (gd->bd->bi_dram[i].size, "\n");
200 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
201 size += gd->bd->bi_dram[i].size;
204 print_size(size, "\n");
211 static void display_flash_config (ulong size)
214 print_size (size, "\n");
216 #endif /* CFG_NO_FLASH */
218 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
219 static int init_func_i2c (void)
222 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
229 * Breathe some life into the board...
231 * Initialize a serial port as console, and carry out some hardware
234 * The first part of initialization is running from Flash memory;
235 * its main purpose is to initialize the RAM so that we
236 * can relocate the monitor code to RAM.
240 * All attempts to come up with a "common" initialization sequence
241 * that works for all boards and architectures failed: some of the
242 * requirements are just _too_ different. To get rid of the resulting
243 * mess of board dependent #ifdef'ed code we now make the whole
244 * initialization sequence configurable to the user.
246 * The requirements for any new initalization function is simple: it
247 * receives a pointer to the "global data" structure as it's only
248 * argument, and returns an integer return code, where 0 means
249 * "continue" and != 0 means "fatal error, hang the system".
251 typedef int (init_fnc_t) (void);
253 int print_cpuinfo (void); /* test-only */
255 init_fnc_t *init_sequence[] = {
256 cpu_init, /* basic cpu dependent setup */
257 board_init, /* basic board dependent setup */
258 interrupt_init, /* set up exceptions */
259 env_init, /* initialize environment */
260 init_baudrate, /* initialze baudrate settings */
261 serial_init, /* serial communications setup */
262 console_init_f, /* stage 1 init of console */
263 display_banner, /* say that we are here */
264 #if defined(CONFIG_DISPLAY_CPUINFO)
265 print_cpuinfo, /* display cpu info (and speed) */
267 #if defined(CONFIG_DISPLAY_BOARDINFO)
268 checkboard, /* display board info */
270 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
273 dram_init, /* configure available RAM banks */
278 void start_armboot (void)
280 init_fnc_t **init_fnc_ptr;
285 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
289 /* Pointer is writable since we allocated a register for it */
290 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
291 /* compiler optimization barrier needed for GCC >= 3.4 */
292 __asm__ __volatile__("": : :"memory");
294 memset ((void*)gd, 0, sizeof (gd_t));
295 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
296 memset (gd->bd, 0, sizeof (bd_t));
298 monitor_flash_len = _bss_start - _armboot_start;
300 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
301 if ((*init_fnc_ptr)() != 0) {
307 /* configure available FLASH banks */
308 size = flash_init ();
309 display_flash_config (size);
310 #endif /* CFG_NO_FLASH */
314 # define PAGE_SIZE 4096
317 * reserve memory for VFD display (always full pages)
319 /* bss_end is defined in the board-specific linker script */
320 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
321 size = vfd_setmem (addr);
323 #endif /* CONFIG_VFD */
327 # define PAGE_SIZE 4096
330 * reserve memory for LCD display (always full pages)
332 /* bss_end is defined in the board-specific linker script */
333 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
334 size = lcd_setmem (addr);
336 #endif /* CONFIG_LCD */
338 /* armboot_start is defined in the board-specific linker script */
339 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
341 #if defined(CONFIG_CMD_NAND)
343 nand_init(); /* go init the NAND */
346 #if defined(CONFIG_CMD_ONENAND)
350 #ifdef CONFIG_HAS_DATAFLASH
351 AT91F_DataflashInit();
352 dataflash_print_info();
355 /* initialize environment */
359 /* must do this after the framebuffer is allocated */
361 #endif /* CONFIG_VFD */
363 #ifdef CONFIG_SERIAL_MULTI
368 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
377 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
378 s = (i > 0) ? tmp : NULL;
380 for (reg = 0; reg < 6; ++reg) {
381 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
383 s = (*e) ? e + 1 : e;
386 #ifdef CONFIG_HAS_ETH1
387 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
388 s = (i > 0) ? tmp : NULL;
390 for (reg = 0; reg < 6; ++reg) {
391 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
393 s = (*e) ? e + 1 : e;
398 devices_init (); /* get the devices list going. */
400 #ifdef CONFIG_CMC_PU2
401 load_sernum_ethaddr ();
402 #endif /* CONFIG_CMC_PU2 */
406 console_init_r (); /* fully init console as a device */
408 #if defined(CONFIG_MISC_INIT_R)
409 /* miscellaneous platform dependent initialisations */
413 /* enable exceptions */
414 enable_interrupts ();
416 /* Perform network card initialisation if necessary */
417 #ifdef CONFIG_DRIVER_TI_EMAC
418 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
419 if (getenv ("ethaddr")) {
420 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
424 #ifdef CONFIG_DRIVER_CS8900
425 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
428 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
429 if (getenv ("ethaddr")) {
430 smc_set_mac_addr(gd->bd->bi_enetaddr);
432 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
434 /* Initialize from environment */
435 if ((s = getenv ("loadaddr")) != NULL) {
436 load_addr = simple_strtoul (s, NULL, 16);
438 #if defined(CONFIG_CMD_NET)
439 if ((s = getenv ("bootfile")) != NULL) {
440 copy_filename (BootFile, s, sizeof (BootFile));
444 #ifdef BOARD_LATE_INIT
447 #if defined(CONFIG_CMD_NET)
448 #if defined(CONFIG_NET_MULTI)
451 eth_initialize(gd->bd);
452 #if defined(CONFIG_RESET_PHY_R)
453 debug ("Reset Ethernet PHY\n");
457 /* main_loop() can return to retry autoboot, if so just run it again. */
462 /* NOTREACHED - no way out of command loop except booting */
467 puts ("### ERROR ### Please RESET the board ###\n");
471 #ifdef CONFIG_MODEM_SUPPORT
472 static inline void mdm_readline(char *buf, int bufsiz);
474 /* called from main loop (common/main.c) */
475 extern void dbg(const char *fmt, ...);
481 extern char console_buffer[];
482 extern void enable_putc(void);
483 extern int hwflow_onoff(int);
485 enable_putc(); /* enable serial_putc() */
488 init_str = getenv("mdm_flow_control");
489 if (init_str && (strcmp(init_str, "rts/cts") == 0))
496 sprintf(env_str, "mdm_init%d", i);
497 if ((init_str = getenv(env_str)) != NULL) {
498 serial_puts(init_str);
501 mdm_readline(console_buffer, CFG_CBSIZE);
502 dbg("ini%d: [%s]", i, console_buffer);
504 if ((strcmp(console_buffer, "OK") == 0) ||
505 (strcmp(console_buffer, "ERROR") == 0)) {
506 dbg("ini%d: cmd done", i);
508 } else /* in case we are originating call ... */
509 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
510 dbg("ini%d: connect", i);
515 break; /* no init string - stop modem init */
522 /* final stage - wait for connect */
523 for(;i > 1;) { /* if 'i' > 1 - wait for connection
524 message from modem */
525 mdm_readline(console_buffer, CFG_CBSIZE);
526 dbg("ini_f: [%s]", console_buffer);
527 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
528 dbg("ini_f: connected");
536 /* 'inline' - We have to do it fast */
537 static inline void mdm_readline(char *buf, int bufsiz)
548 /* dbg("(%c)", c); */
560 return; /* sanity check */
568 #endif /* CONFIG_MODEM_SUPPORT */