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 */
268 void board_init_f (ulong bootflag)
271 init_fnc_t **init_fnc_ptr;
275 /* Pointer is writable since we allocated a register for it */
276 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
277 /* compiler optimization barrier needed for GCC >= 3.4 */
278 __asm__ __volatile__("": : :"memory");
280 memset ((void*)gd, 0, sizeof (gd_t));
282 gd->mon_len = _bss_end_ofs;
284 #ifdef CONFIG_MACH_TYPE
285 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
288 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
289 if ((*init_fnc_ptr)() != 0) {
294 debug ("monitor len: %08lX\n", gd->mon_len);
296 * Ram is setup, size stored in gd !!
298 debug ("ramsize: %08lX\n", gd->ram_size);
299 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
301 * Subtract specified amount of memory to hide so that it won't
302 * get "touched" at all by U-Boot. By fixing up gd->ram_size
303 * the Linux kernel should now get passed the now "corrected"
304 * memory size and won't touch it either. This should work
305 * for arch/ppc and arch/powerpc. Only Linux board ports in
306 * arch/powerpc with bootwrapper support, that recalculate the
307 * memory size from the SDRAM controller setup will have to
310 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
313 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
315 #ifdef CONFIG_LOGBUFFER
316 #ifndef CONFIG_ALT_LB_ADDR
317 /* reserve kernel log buffer */
318 addr -= (LOGBUFF_RESERVE);
319 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
325 * reserve protected RAM
327 i = getenv_r ("pram", (char *)tmp, sizeof (tmp));
328 reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM;
329 addr -= (reg << 10); /* size is in kB */
330 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
331 #endif /* CONFIG_PRAM */
333 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
334 /* reserve TLB table */
337 /* round down to next 64 kB limit */
338 addr &= ~(0x10000 - 1);
341 debug ("TLB table at: %08lx\n", addr);
344 /* round down to next 4 kB limit */
346 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
349 #ifdef CONFIG_FB_ADDR
350 gd->fb_base = CONFIG_FB_ADDR;
352 /* reserve memory for LCD display (always full pages) */
353 addr = lcd_setmem (addr);
355 #endif /* CONFIG_FB_ADDR */
356 #endif /* CONFIG_LCD */
359 * reserve memory for U-Boot code, data & bss
360 * round down to next 4 kB limit
365 debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
367 #ifndef CONFIG_PRELOADER
369 * reserve memory for malloc() arena
371 addr_sp = addr - TOTAL_MALLOC_LEN;
372 debug ("Reserving %dk for malloc() at: %08lx\n",
373 TOTAL_MALLOC_LEN >> 10, addr_sp);
375 * (permanently) allocate a Board Info struct
376 * and a permanent copy of the "global" data
378 addr_sp -= sizeof (bd_t);
379 bd = (bd_t *) addr_sp;
381 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
382 sizeof (bd_t), addr_sp);
383 addr_sp -= sizeof (gd_t);
384 id = (gd_t *) addr_sp;
385 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
386 sizeof (gd_t), addr_sp);
388 /* setup stackpointer for exeptions */
389 gd->irq_sp = addr_sp;
390 #ifdef CONFIG_USE_IRQ
391 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
392 debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n",
393 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
395 /* leave 3 words for abort-stack */
398 /* 8-byte alignment for ABI compliance */
401 addr_sp += 128; /* leave 32 words for abort-stack */
402 gd->irq_sp = addr_sp;
405 debug ("New Stack Pointer is: %08lx\n", addr_sp);
408 post_bootmode_init();
409 post_run (NULL, POST_ROM | post_bootmode_get(0));
412 gd->bd->bi_baudrate = gd->baudrate;
413 /* Ram ist board specific, so move it to board code ... */
414 dram_init_banksize();
415 display_dram_config(); /* and display it */
417 gd->relocaddr = addr;
418 gd->start_addr_sp = addr_sp;
419 gd->reloc_off = addr - _TEXT_BASE;
420 debug ("relocation Offset is: %08lx\n", gd->reloc_off);
421 memcpy (id, (void *)gd, sizeof (gd_t));
423 relocate_code (addr_sp, id, addr);
425 /* NOTREACHED - relocate_code() does not return */
428 #if !defined(CONFIG_SYS_NO_FLASH)
429 static char *failed = "*** failed ***\n";
432 /************************************************************************
434 * This is the next part if the initialization sequence: we are now
435 * running from RAM and have a "normal" C environment, i. e. global
436 * data can be written, BSS has been cleared, the stack size in not
437 * that critical any more, etc.
439 ************************************************************************
442 void board_init_r (gd_t *id, ulong dest_addr)
447 #if !defined(CONFIG_SYS_NO_FLASH)
454 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
456 monitor_flash_len = _end_ofs;
459 * I$, if needed, must be already enabled in start.S
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 */
532 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
537 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
539 stdio_init (); /* get the devices list going. */
543 #if defined(CONFIG_API)
548 console_init_r (); /* fully init console as a device */
550 #if defined(CONFIG_ARCH_MISC_INIT)
551 /* miscellaneous arch dependent initialisations */
554 #if defined(CONFIG_MISC_INIT_R)
555 /* miscellaneous platform dependent initialisations */
559 /* set up exceptions */
561 /* enable exceptions */
562 enable_interrupts ();
564 /* Perform network card initialisation if necessary */
565 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
566 /* XXX: this needs to be moved to board init */
567 if (getenv ("ethaddr")) {
569 eth_getenv_enetaddr("ethaddr", enetaddr);
570 smc_set_mac_addr(enetaddr);
572 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
574 /* Initialize from environment */
575 if ((s = getenv ("loadaddr")) != NULL) {
576 load_addr = simple_strtoul (s, NULL, 16);
578 #if defined(CONFIG_CMD_NET)
579 if ((s = getenv ("bootfile")) != NULL) {
580 copy_filename (BootFile, s, sizeof (BootFile));
584 #ifdef BOARD_LATE_INIT
588 #ifdef CONFIG_BITBANGMII
591 #if defined(CONFIG_CMD_NET)
592 #if defined(CONFIG_NET_MULTI)
595 eth_initialize(gd->bd);
596 #if defined(CONFIG_RESET_PHY_R)
597 debug ("Reset Ethernet PHY\n");
603 post_run (NULL, POST_RAM | post_bootmode_get(0));
606 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
608 * Export available size of memory for Linux,
609 * taking into account the protected RAM at top of memory
617 if ((s = getenv ("pram")) != NULL) {
618 pram = simple_strtoul (s, NULL, 10);
625 #ifdef CONFIG_LOGBUFFER
626 #ifndef CONFIG_ALT_LB_ADDR
627 /* Also take the logbuffer into account (pram is in kB) */
628 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
631 sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
632 setenv ("mem", (char *)memsz);
636 /* main_loop() can return to retry autoboot, if so just run it again. */
641 /* NOTREACHED - no way out of command loop except booting */
646 puts ("### ERROR ### Please RESET the board ###\n");