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
45 #include <timestamp.h>
50 #include <onenand_uboot.h>
52 #ifdef CONFIG_DRIVER_SMC91111
53 #include "../drivers/net/smc91111.h"
55 #ifdef CONFIG_DRIVER_LAN91C96
56 #include "../drivers/net/lan91c96.h"
59 DECLARE_GLOBAL_DATA_PTR;
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" (" U_BOOT_DATE " - " U_BOOT_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);
83 #if defined(CONFIG_HARD_I2C) || \
84 defined(CONFIG_SOFT_I2C)
89 * Begin and End of memory area for malloc(), and current "brk"
91 static ulong mem_malloc_start = 0;
92 static ulong mem_malloc_end = 0;
93 static ulong mem_malloc_brk = 0;
96 void mem_malloc_init (ulong dest_addr)
98 mem_malloc_start = dest_addr;
99 mem_malloc_end = dest_addr + CONFIG_SYS_MALLOC_LEN;
100 mem_malloc_brk = mem_malloc_start;
102 memset ((void *) mem_malloc_start, 0,
103 mem_malloc_end - mem_malloc_start);
106 void *sbrk (ptrdiff_t increment)
108 ulong old = mem_malloc_brk;
109 ulong new = old + increment;
111 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
114 mem_malloc_brk = new;
116 return ((void *) old);
120 /************************************************************************
121 * Coloured LED functionality
122 ************************************************************************
123 * May be supplied by boards if desired
125 void inline __coloured_LED_init (void) {}
126 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
127 void inline __red_LED_on (void) {}
128 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
129 void inline __red_LED_off(void) {}
130 void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
131 void inline __green_LED_on(void) {}
132 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
133 void inline __green_LED_off(void) {}
134 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
135 void inline __yellow_LED_on(void) {}
136 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
137 void inline __yellow_LED_off(void) {}
138 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
140 /************************************************************************
142 ************************************************************************
143 * Some of this code should be moved into the core functions,
144 * or dropped completely,
145 * but let's get it working (again) first...
148 static int init_baudrate (void)
150 char tmp[64]; /* long enough for environment variables */
151 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
152 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
153 ? (int) simple_strtoul (tmp, NULL, 10)
159 static int display_banner (void)
161 printf ("\n\n%s\n\n", version_string);
162 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
163 _armboot_start, _bss_start, _bss_end);
164 #ifdef CONFIG_MODEM_SUPPORT
165 debug ("Modem Support enabled\n");
167 #ifdef CONFIG_USE_IRQ
168 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
169 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
176 * WARNING: this code looks "cleaner" than the PowerPC version, but
177 * has the disadvantage that you either get nothing, or everything.
178 * On PowerPC, you might see "DRAM: " before the system hangs - which
179 * gives a simple yet clear indication which part of the
180 * initialization if failing.
182 static int display_dram_config (void)
187 puts ("RAM Configuration:\n");
189 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
190 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
191 print_size (gd->bd->bi_dram[i].size, "\n");
196 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
197 size += gd->bd->bi_dram[i].size;
200 print_size(size, "\n");
206 #ifndef CONFIG_SYS_NO_FLASH
207 static void display_flash_config (ulong size)
210 print_size (size, "\n");
212 #endif /* CONFIG_SYS_NO_FLASH */
214 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
215 static int init_func_i2c (void)
218 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
225 * Breathe some life into the board...
227 * Initialize a serial port as console, and carry out some hardware
230 * The first part of initialization is running from Flash memory;
231 * its main purpose is to initialize the RAM so that we
232 * can relocate the monitor code to RAM.
236 * All attempts to come up with a "common" initialization sequence
237 * that works for all boards and architectures failed: some of the
238 * requirements are just _too_ different. To get rid of the resulting
239 * mess of board dependent #ifdef'ed code we now make the whole
240 * initialization sequence configurable to the user.
242 * The requirements for any new initalization function is simple: it
243 * receives a pointer to the "global data" structure as it's only
244 * argument, and returns an integer return code, where 0 means
245 * "continue" and != 0 means "fatal error, hang the system".
247 typedef int (init_fnc_t) (void);
249 int print_cpuinfo (void); /* test-only */
251 init_fnc_t *init_sequence[] = {
252 cpu_init, /* basic cpu dependent setup */
253 board_init, /* basic board dependent setup */
254 interrupt_init, /* set up exceptions */
255 env_init, /* initialize environment */
256 init_baudrate, /* initialze baudrate settings */
257 serial_init, /* serial communications setup */
258 console_init_f, /* stage 1 init of console */
259 display_banner, /* say that we are here */
260 #if defined(CONFIG_DISPLAY_CPUINFO)
261 print_cpuinfo, /* display cpu info (and speed) */
263 #if defined(CONFIG_DISPLAY_BOARDINFO)
264 checkboard, /* display board info */
266 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
269 dram_init, /* configure available RAM banks */
274 void start_armboot (void)
276 init_fnc_t **init_fnc_ptr;
278 #if !defined(CONFIG_SYS_NO_FLASH) || defined (CONFIG_VFD) || defined(CONFIG_LCD)
281 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
285 /* Pointer is writable since we allocated a register for it */
286 gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
287 /* compiler optimization barrier needed for GCC >= 3.4 */
288 __asm__ __volatile__("": : :"memory");
290 memset ((void*)gd, 0, sizeof (gd_t));
291 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
292 memset (gd->bd, 0, sizeof (bd_t));
294 gd->flags |= GD_FLG_RELOC;
296 monitor_flash_len = _bss_start - _armboot_start;
298 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
299 if ((*init_fnc_ptr)() != 0) {
304 #ifndef CONFIG_SYS_NO_FLASH
305 /* configure available FLASH banks */
306 size = flash_init ();
307 display_flash_config (size);
308 #endif /* CONFIG_SYS_NO_FLASH */
312 # define PAGE_SIZE 4096
315 * reserve memory for VFD display (always full pages)
317 /* bss_end is defined in the board-specific linker script */
318 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
319 size = vfd_setmem (addr);
321 #endif /* CONFIG_VFD */
324 /* board init may have inited fb_base */
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);
337 #endif /* CONFIG_LCD */
339 /* armboot_start is defined in the board-specific linker script */
340 mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN);
342 #if defined(CONFIG_CMD_NAND)
344 nand_init(); /* go init the NAND */
347 #if defined(CONFIG_CMD_ONENAND)
351 #ifdef CONFIG_HAS_DATAFLASH
352 AT91F_DataflashInit();
353 dataflash_print_info();
356 /* initialize environment */
360 /* must do this after the framebuffer is allocated */
362 #endif /* CONFIG_VFD */
364 #ifdef CONFIG_SERIAL_MULTI
369 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
378 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
379 s = (i > 0) ? tmp : NULL;
381 for (reg = 0; reg < 6; ++reg) {
382 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
384 s = (*e) ? e + 1 : e;
387 #ifdef CONFIG_HAS_ETH1
388 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
389 s = (i > 0) ? tmp : NULL;
391 for (reg = 0; reg < 6; ++reg) {
392 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
394 s = (*e) ? e + 1 : e;
399 devices_init (); /* get the devices list going. */
401 #ifdef CONFIG_CMC_PU2
402 load_sernum_ethaddr ();
403 #endif /* CONFIG_CMC_PU2 */
407 console_init_r (); /* fully init console as a device */
409 #if defined(CONFIG_MISC_INIT_R)
410 /* miscellaneous platform dependent initialisations */
414 /* enable exceptions */
415 enable_interrupts ();
417 /* Perform network card initialisation if necessary */
418 #ifdef CONFIG_DRIVER_TI_EMAC
419 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
420 if (getenv ("ethaddr")) {
421 davinci_eth_set_mac_addr(gd->bd->bi_enetaddr);
425 #ifdef CONFIG_DRIVER_CS8900
426 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
429 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
430 if (getenv ("ethaddr")) {
431 smc_set_mac_addr(gd->bd->bi_enetaddr);
433 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
435 /* Initialize from environment */
436 if ((s = getenv ("loadaddr")) != NULL) {
437 load_addr = simple_strtoul (s, NULL, 16);
439 #if defined(CONFIG_CMD_NET)
440 if ((s = getenv ("bootfile")) != NULL) {
441 copy_filename (BootFile, s, sizeof (BootFile));
445 #ifdef BOARD_LATE_INIT
448 #if defined(CONFIG_CMD_NET)
449 #if defined(CONFIG_NET_MULTI)
452 eth_initialize(gd->bd);
453 #if defined(CONFIG_RESET_PHY_R)
454 debug ("Reset Ethernet PHY\n");
458 /* main_loop() can return to retry autoboot, if so just run it again. */
463 /* NOTREACHED - no way out of command loop except booting */
468 puts ("### ERROR ### Please RESET the board ###\n");
472 #ifdef CONFIG_MODEM_SUPPORT
473 static inline void mdm_readline(char *buf, int bufsiz);
475 /* called from main loop (common/main.c) */
476 extern void dbg(const char *fmt, ...);
482 extern char console_buffer[];
483 extern void enable_putc(void);
484 extern int hwflow_onoff(int);
486 enable_putc(); /* enable serial_putc() */
489 init_str = getenv("mdm_flow_control");
490 if (init_str && (strcmp(init_str, "rts/cts") == 0))
497 sprintf(env_str, "mdm_init%d", i);
498 if ((init_str = getenv(env_str)) != NULL) {
499 serial_puts(init_str);
502 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
503 dbg("ini%d: [%s]", i, console_buffer);
505 if ((strcmp(console_buffer, "OK") == 0) ||
506 (strcmp(console_buffer, "ERROR") == 0)) {
507 dbg("ini%d: cmd done", i);
509 } else /* in case we are originating call ... */
510 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
511 dbg("ini%d: connect", i);
516 break; /* no init string - stop modem init */
523 /* final stage - wait for connect */
524 for(;i > 1;) { /* if 'i' > 1 - wait for connection
525 message from modem */
526 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
527 dbg("ini_f: [%s]", console_buffer);
528 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
529 dbg("ini_f: connected");
537 /* 'inline' - We have to do it fast */
538 static inline void mdm_readline(char *buf, int bufsiz)
549 /* dbg("(%c)", c); */
561 return; /* sanity check */
569 #endif /* CONFIG_MODEM_SUPPORT */