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 #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 /************************************************************************
120 ************************************************************************
121 * Some of this code should be moved into the core functions,
122 * or dropped completely,
123 * but let's get it working (again) first...
126 static int init_baudrate (void)
128 char tmp[64]; /* long enough for environment variables */
129 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
130 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
131 ? (int) simple_strtoul (tmp, NULL, 10)
137 static int display_banner (void)
139 printf ("\n\n%s\n\n", version_string);
140 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
141 _armboot_start, _bss_start, _bss_end);
142 #ifdef CONFIG_MODEM_SUPPORT
143 debug ("Modem Support enabled\n");
145 #ifdef CONFIG_USE_IRQ
146 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
147 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
154 * WARNING: this code looks "cleaner" than the PowerPC version, but
155 * has the disadvantage that you either get nothing, or everything.
156 * On PowerPC, you might see "DRAM: " before the system hangs - which
157 * gives a simple yet clear indication which part of the
158 * initialization if failing.
160 static int display_dram_config (void)
165 puts ("RAM Configuration:\n");
167 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
168 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
169 print_size (gd->bd->bi_dram[i].size, "\n");
174 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
175 size += gd->bd->bi_dram[i].size;
178 print_size(size, "\n");
185 static void display_flash_config (ulong size)
188 print_size (size, "\n");
190 #endif /* CFG_NO_FLASH */
194 * Breathe some life into the board...
196 * Initialize a serial port as console, and carry out some hardware
199 * The first part of initialization is running from Flash memory;
200 * its main purpose is to initialize the RAM so that we
201 * can relocate the monitor code to RAM.
205 * All attempts to come up with a "common" initialization sequence
206 * that works for all boards and architectures failed: some of the
207 * requirements are just _too_ different. To get rid of the resulting
208 * mess of board dependent #ifdef'ed code we now make the whole
209 * initialization sequence configurable to the user.
211 * The requirements for any new initalization function is simple: it
212 * receives a pointer to the "global data" structure as it's only
213 * argument, and returns an integer return code, where 0 means
214 * "continue" and != 0 means "fatal error, hang the system".
216 typedef int (init_fnc_t) (void);
218 int print_cpuinfo (void); /* test-only */
220 init_fnc_t *init_sequence[] = {
221 cpu_init, /* basic cpu dependent setup */
222 board_init, /* basic board dependent setup */
223 interrupt_init, /* set up exceptions */
224 env_init, /* initialize environment */
225 init_baudrate, /* initialze baudrate settings */
226 serial_init, /* serial communications setup */
227 console_init_f, /* stage 1 init of console */
228 display_banner, /* say that we are here */
229 #if defined(CONFIG_DISPLAY_CPUINFO)
230 print_cpuinfo, /* display cpu info (and speed) */
232 #if defined(CONFIG_DISPLAY_BOARDINFO)
233 checkboard, /* display board info */
235 dram_init, /* configure available RAM banks */
240 void start_armboot (void)
242 init_fnc_t **init_fnc_ptr;
247 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
251 /* Pointer is writable since we allocated a register for it */
252 gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
253 /* compiler optimization barrier needed for GCC >= 3.4 */
254 __asm__ __volatile__("": : :"memory");
256 memset ((void*)gd, 0, sizeof (gd_t));
257 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
258 memset (gd->bd, 0, sizeof (bd_t));
260 monitor_flash_len = _bss_start - _armboot_start;
262 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
263 if ((*init_fnc_ptr)() != 0) {
269 /* configure available FLASH banks */
270 size = flash_init ();
271 display_flash_config (size);
272 #endif /* CFG_NO_FLASH */
276 # define PAGE_SIZE 4096
279 * reserve memory for VFD display (always full pages)
281 /* bss_end is defined in the board-specific linker script */
282 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
283 size = vfd_setmem (addr);
285 #endif /* CONFIG_VFD */
289 # define PAGE_SIZE 4096
292 * reserve memory for LCD display (always full pages)
294 /* bss_end is defined in the board-specific linker script */
295 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
296 size = lcd_setmem (addr);
298 #endif /* CONFIG_LCD */
300 /* armboot_start is defined in the board-specific linker script */
301 mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
303 #if defined(CONFIG_CMD_NAND)
305 nand_init(); /* go init the NAND */
308 #if defined(CONFIG_CMD_ONENAND)
312 #ifdef CONFIG_HAS_DATAFLASH
313 AT91F_DataflashInit();
314 dataflash_print_info();
317 /* initialize environment */
321 /* must do this after the framebuffer is allocated */
323 #endif /* CONFIG_VFD */
325 #ifdef CONFIG_SERIAL_MULTI
330 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
339 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
340 s = (i > 0) ? tmp : NULL;
342 for (reg = 0; reg < 6; ++reg) {
343 gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
345 s = (*e) ? e + 1 : e;
348 #ifdef CONFIG_HAS_ETH1
349 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
350 s = (i > 0) ? tmp : NULL;
352 for (reg = 0; reg < 6; ++reg) {
353 gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
355 s = (*e) ? e + 1 : e;
360 devices_init (); /* get the devices list going. */
362 #ifdef CONFIG_CMC_PU2
363 load_sernum_ethaddr ();
364 #endif /* CONFIG_CMC_PU2 */
368 console_init_r (); /* fully init console as a device */
370 #if defined(CONFIG_MISC_INIT_R)
371 /* miscellaneous platform dependent initialisations */
375 /* enable exceptions */
376 enable_interrupts ();
378 /* Perform network card initialisation if necessary */
379 #ifdef CONFIG_DRIVER_TI_EMAC
380 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
381 if (getenv ("ethaddr")) {
382 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
386 #ifdef CONFIG_DRIVER_CS8900
387 cs8900_get_enetaddr (gd->bd->bi_enetaddr);
390 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
391 if (getenv ("ethaddr")) {
392 smc_set_mac_addr(gd->bd->bi_enetaddr);
394 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
396 /* Initialize from environment */
397 if ((s = getenv ("loadaddr")) != NULL) {
398 load_addr = simple_strtoul (s, NULL, 16);
400 #if defined(CONFIG_CMD_NET)
401 if ((s = getenv ("bootfile")) != NULL) {
402 copy_filename (BootFile, s, sizeof (BootFile));
406 #ifdef BOARD_LATE_INIT
409 #if defined(CONFIG_CMD_NET)
410 #if defined(CONFIG_NET_MULTI)
413 eth_initialize(gd->bd);
415 /* main_loop() can return to retry autoboot, if so just run it again. */
420 /* NOTREACHED - no way out of command loop except booting */
425 puts ("### ERROR ### Please RESET the board ###\n");
429 #ifdef CONFIG_MODEM_SUPPORT
430 static inline void mdm_readline(char *buf, int bufsiz);
432 /* called from main loop (common/main.c) */
433 extern void dbg(const char *fmt, ...);
439 extern char console_buffer[];
440 extern void enable_putc(void);
441 extern int hwflow_onoff(int);
443 enable_putc(); /* enable serial_putc() */
446 init_str = getenv("mdm_flow_control");
447 if (init_str && (strcmp(init_str, "rts/cts") == 0))
454 sprintf(env_str, "mdm_init%d", i);
455 if ((init_str = getenv(env_str)) != NULL) {
456 serial_puts(init_str);
459 mdm_readline(console_buffer, CFG_CBSIZE);
460 dbg("ini%d: [%s]", i, console_buffer);
462 if ((strcmp(console_buffer, "OK") == 0) ||
463 (strcmp(console_buffer, "ERROR") == 0)) {
464 dbg("ini%d: cmd done", i);
466 } else /* in case we are originating call ... */
467 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
468 dbg("ini%d: connect", i);
473 break; /* no init string - stop modem init */
480 /* final stage - wait for connect */
481 for(;i > 1;) { /* if 'i' > 1 - wait for connection
482 message from modem */
483 mdm_readline(console_buffer, CFG_CBSIZE);
484 dbg("ini_f: [%s]", console_buffer);
485 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
486 dbg("ini_f: connected");
494 /* 'inline' - We have to do it fast */
495 static inline void mdm_readline(char *buf, int bufsiz)
506 /* dbg("(%c)", c); */
518 return; /* sanity check */
526 #endif /* CONFIG_MODEM_SUPPORT */