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
44 #include <stdio_dev.h>
45 #include <timestamp.h>
50 #include <onenand_uboot.h>
53 #ifdef CONFIG_BITBANGMII
57 #ifdef CONFIG_DRIVER_SMC91111
58 #include "../drivers/net/smc91111.h"
60 #ifdef CONFIG_DRIVER_LAN91C96
61 #include "../drivers/net/lan91c96.h"
64 DECLARE_GLOBAL_DATA_PTR;
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" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
80 #ifdef CONFIG_DRIVER_RTL8019
81 extern void rtl8019_get_enetaddr (uchar * addr);
84 #if defined(CONFIG_HARD_I2C) || \
85 defined(CONFIG_SOFT_I2C)
90 /************************************************************************
91 * Coloured LED functionality
92 ************************************************************************
93 * May be supplied by boards if desired
95 void inline __coloured_LED_init (void) {}
96 void coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
97 void inline __red_LED_on (void) {}
98 void red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
99 void inline __red_LED_off(void) {}
100 void red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
101 void inline __green_LED_on(void) {}
102 void green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
103 void inline __green_LED_off(void) {}
104 void green_LED_off(void) __attribute__((weak, alias("__green_LED_off")));
105 void inline __yellow_LED_on(void) {}
106 void yellow_LED_on(void) __attribute__((weak, alias("__yellow_LED_on")));
107 void inline __yellow_LED_off(void) {}
108 void yellow_LED_off(void) __attribute__((weak, alias("__yellow_LED_off")));
109 void inline __blue_LED_on(void) {}
110 void blue_LED_on(void) __attribute__((weak, alias("__blue_LED_on")));
111 void inline __blue_LED_off(void) {}
112 void blue_LED_off(void) __attribute__((weak, alias("__blue_LED_off")));
114 /************************************************************************
116 ************************************************************************
117 * Some of this code should be moved into the core functions,
118 * or dropped completely,
119 * but let's get it working (again) first...
122 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
123 #define CONFIG_BAUDRATE 115200
125 static int init_baudrate (void)
127 char tmp[64]; /* long enough for environment variables */
128 int i = getenv_f("baudrate", tmp, sizeof (tmp));
130 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",
142 _bss_start_ofs+_TEXT_BASE, _bss_end_ofs+_TEXT_BASE);
143 #ifdef CONFIG_MODEM_SUPPORT
144 debug ("Modem Support enabled\n");
146 #ifdef CONFIG_USE_IRQ
147 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
148 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
155 * WARNING: this code looks "cleaner" than the PowerPC version, but
156 * has the disadvantage that you either get nothing, or everything.
157 * On PowerPC, you might see "DRAM: " before the system hangs - which
158 * gives a simple yet clear indication which part of the
159 * initialization if failing.
161 static int display_dram_config (void)
166 puts ("RAM Configuration:\n");
168 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
169 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
170 print_size (gd->bd->bi_dram[i].size, "\n");
175 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
176 size += gd->bd->bi_dram[i].size;
179 print_size(size, "\n");
185 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
186 static int init_func_i2c (void)
189 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
195 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
197 static int arm_pci_init(void)
202 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
205 * Breathe some life into the board...
207 * Initialize a serial port as console, and carry out some hardware
210 * The first part of initialization is running from Flash memory;
211 * its main purpose is to initialize the RAM so that we
212 * can relocate the monitor code to RAM.
216 * All attempts to come up with a "common" initialization sequence
217 * that works for all boards and architectures failed: some of the
218 * requirements are just _too_ different. To get rid of the resulting
219 * mess of board dependent #ifdef'ed code we now make the whole
220 * initialization sequence configurable to the user.
222 * The requirements for any new initalization function is simple: it
223 * receives a pointer to the "global data" structure as it's only
224 * argument, and returns an integer return code, where 0 means
225 * "continue" and != 0 means "fatal error, hang the system".
227 typedef int (init_fnc_t) (void);
229 int print_cpuinfo (void);
231 void __dram_init_banksize(void)
233 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
234 gd->bd->bi_dram[0].size = gd->ram_size;
236 void dram_init_banksize(void)
237 __attribute__((weak, alias("__dram_init_banksize")));
239 init_fnc_t *init_sequence[] = {
240 #if defined(CONFIG_ARCH_CPU_INIT)
241 arch_cpu_init, /* basic arch cpu dependent setup */
243 #if defined(CONFIG_BOARD_EARLY_INIT_F)
246 timer_init, /* initialize timer */
247 #ifdef CONFIG_FSL_ESDHC
250 env_init, /* initialize environment */
251 init_baudrate, /* initialze baudrate settings */
252 serial_init, /* serial communications setup */
253 console_init_f, /* stage 1 init of console */
254 display_banner, /* say that we are here */
255 #if defined(CONFIG_DISPLAY_CPUINFO)
256 print_cpuinfo, /* display cpu info (and speed) */
258 #if defined(CONFIG_DISPLAY_BOARDINFO)
259 checkboard, /* display board info */
261 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
264 dram_init, /* configure available RAM banks */
265 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
271 void board_init_f (ulong bootflag)
274 init_fnc_t **init_fnc_ptr;
278 /* Pointer is writable since we allocated a register for it */
279 gd = (gd_t *) (CONFIG_SYS_INIT_SP_ADDR);
280 /* compiler optimization barrier needed for GCC >= 3.4 */
281 __asm__ __volatile__("": : :"memory");
283 memset ((void*)gd, 0, sizeof (gd_t));
285 gd->mon_len = _bss_end_ofs;
287 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
288 if ((*init_fnc_ptr)() != 0) {
293 debug ("monitor len: %08lX\n", gd->mon_len);
295 * Ram is setup, size stored in gd !!
297 debug ("ramsize: %08lX\n", gd->ram_size);
298 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
300 * Subtract specified amount of memory to hide so that it won't
301 * get "touched" at all by U-Boot. By fixing up gd->ram_size
302 * the Linux kernel should now get passed the now "corrected"
303 * memory size and won't touch it either. This should work
304 * for arch/ppc and arch/powerpc. Only Linux board ports in
305 * arch/powerpc with bootwrapper support, that recalculate the
306 * memory size from the SDRAM controller setup will have to
309 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
312 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
314 #ifdef CONFIG_LOGBUFFER
315 #ifndef CONFIG_ALT_LB_ADDR
316 /* reserve kernel log buffer */
317 addr -= (LOGBUFF_RESERVE);
318 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
324 * reserve protected RAM
326 i = getenv_r ("pram", (char *)tmp, sizeof (tmp));
327 reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM;
328 addr -= (reg << 10); /* size is in kB */
329 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
330 #endif /* CONFIG_PRAM */
332 #if !(defined(CONFIG_SYS_NO_ICACHE) && defined(CONFIG_SYS_NO_DCACHE))
333 /* reserve TLB table */
336 /* round down to next 64 kB limit */
337 addr &= ~(0x10000 - 1);
340 debug ("TLB table at: %08lx\n", addr);
343 /* round down to next 4 kB limit */
345 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
349 # define PAGE_SIZE 4096
352 * reserve memory for VFD display (always full pages)
354 addr -= vfd_setmem (addr);
356 #endif /* CONFIG_VFD */
359 /* reserve memory for LCD display (always full pages) */
360 addr = lcd_setmem (addr);
362 #endif /* CONFIG_LCD */
365 * reserve memory for U-Boot code, data & bss
366 * round down to next 4 kB limit
371 debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
373 #ifndef CONFIG_PRELOADER
375 * reserve memory for malloc() arena
377 addr_sp = addr - TOTAL_MALLOC_LEN;
378 debug ("Reserving %dk for malloc() at: %08lx\n",
379 TOTAL_MALLOC_LEN >> 10, addr_sp);
381 * (permanently) allocate a Board Info struct
382 * and a permanent copy of the "global" data
384 addr_sp -= sizeof (bd_t);
385 bd = (bd_t *) addr_sp;
387 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
388 sizeof (bd_t), addr_sp);
389 addr_sp -= sizeof (gd_t);
390 id = (gd_t *) addr_sp;
391 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
392 sizeof (gd_t), addr_sp);
394 /* setup stackpointer for exeptions */
395 gd->irq_sp = addr_sp;
396 #ifdef CONFIG_USE_IRQ
397 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
398 debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n",
399 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
401 /* leave 3 words for abort-stack */
404 /* 8-byte alignment for ABI compliance */
407 addr_sp += 128; /* leave 32 words for abort-stack */
408 gd->irq_sp = addr_sp;
411 debug ("New Stack Pointer is: %08lx\n", addr_sp);
414 post_bootmode_init();
415 post_run (NULL, POST_ROM | post_bootmode_get(0));
418 gd->bd->bi_baudrate = gd->baudrate;
419 /* Ram ist board specific, so move it to board code ... */
420 dram_init_banksize();
421 display_dram_config(); /* and display it */
423 gd->relocaddr = addr;
424 gd->start_addr_sp = addr_sp;
425 gd->reloc_off = addr - _TEXT_BASE;
426 debug ("relocation Offset is: %08lx\n", gd->reloc_off);
427 memcpy (id, (void *)gd, sizeof (gd_t));
429 relocate_code (addr_sp, id, addr);
431 /* NOTREACHED - relocate_code() does not return */
434 #if !defined(CONFIG_SYS_NO_FLASH)
435 static char *failed = "*** failed ***\n";
438 /************************************************************************
440 * This is the next part if the initialization sequence: we are now
441 * running from RAM and have a "normal" C environment, i. e. global
442 * data can be written, BSS has been cleared, the stack size in not
443 * that critical any more, etc.
445 ************************************************************************
448 void board_init_r (gd_t *id, ulong dest_addr)
453 #if !defined(CONFIG_SYS_NO_FLASH)
460 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
462 monitor_flash_len = _bss_start_ofs;
463 debug ("monitor flash len: %08lX\n", monitor_flash_len);
464 board_init(); /* Setup chipselects */
466 #ifdef CONFIG_SERIAL_MULTI
470 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
472 #ifdef CONFIG_LOGBUFFER
473 logbuff_init_ptrs ();
476 post_output_backlog ();
479 /* The Malloc area is immediately below the monitor copy in DRAM */
480 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
481 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
483 #if !defined(CONFIG_SYS_NO_FLASH)
486 if ((flash_size = flash_init ()) > 0) {
487 # ifdef CONFIG_SYS_FLASH_CHECKSUM
488 print_size (flash_size, "");
490 * Compute and print flash CRC if flashchecksum is set to 'y'
492 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
494 s = getenv ("flashchecksum");
495 if (s && (*s == 'y')) {
496 printf (" CRC: %08X",
497 crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
501 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
502 print_size (flash_size, "\n");
503 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
510 #if defined(CONFIG_CMD_NAND)
512 nand_init(); /* go init the NAND */
515 #if defined(CONFIG_CMD_ONENAND)
519 #ifdef CONFIG_GENERIC_MMC
524 #ifdef CONFIG_HAS_DATAFLASH
525 AT91F_DataflashInit();
526 dataflash_print_info();
529 /* initialize environment */
533 /* must do this after the framebuffer is allocated */
535 #endif /* CONFIG_VFD */
538 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
540 stdio_init (); /* get the devices list going. */
544 #if defined(CONFIG_API)
549 console_init_r (); /* fully init console as a device */
551 #if defined(CONFIG_ARCH_MISC_INIT)
552 /* miscellaneous arch dependent initialisations */
555 #if defined(CONFIG_MISC_INIT_R)
556 /* miscellaneous platform dependent initialisations */
560 /* set up exceptions */
562 /* enable exceptions */
563 enable_interrupts ();
565 /* Perform network card initialisation if necessary */
566 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
567 /* XXX: this needs to be moved to board init */
568 if (getenv ("ethaddr")) {
570 eth_getenv_enetaddr("ethaddr", enetaddr);
571 smc_set_mac_addr(enetaddr);
573 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
575 /* Initialize from environment */
576 if ((s = getenv ("loadaddr")) != NULL) {
577 load_addr = simple_strtoul (s, NULL, 16);
579 #if defined(CONFIG_CMD_NET)
580 if ((s = getenv ("bootfile")) != NULL) {
581 copy_filename (BootFile, s, sizeof (BootFile));
585 #ifdef BOARD_LATE_INIT
589 #ifdef CONFIG_BITBANGMII
592 #if defined(CONFIG_CMD_NET)
593 #if defined(CONFIG_NET_MULTI)
596 eth_initialize(gd->bd);
597 #if defined(CONFIG_RESET_PHY_R)
598 debug ("Reset Ethernet PHY\n");
604 post_run (NULL, POST_RAM | post_bootmode_get(0));
607 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
609 * Export available size of memory for Linux,
610 * taking into account the protected RAM at top of memory
618 if ((s = getenv ("pram")) != NULL) {
619 pram = simple_strtoul (s, NULL, 10);
626 #ifdef CONFIG_LOGBUFFER
627 #ifndef CONFIG_ALT_LB_ADDR
628 /* Also take the logbuffer into account (pram is in kB) */
629 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
632 sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
633 setenv ("mem", (char *)memsz);
637 /* main_loop() can return to retry autoboot, if so just run it again. */
642 /* NOTREACHED - no way out of command loop except booting */
647 puts ("### ERROR ### Please RESET the board ###\n");