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>
49 #include <onenand_uboot.h>
52 #ifdef CONFIG_BITBANGMII
56 #ifdef CONFIG_DRIVER_SMC91111
57 #include "../drivers/net/smc91111.h"
59 #ifdef CONFIG_DRIVER_LAN91C96
60 #include "../drivers/net/lan91c96.h"
63 DECLARE_GLOBAL_DATA_PTR;
65 ulong monitor_flash_len;
67 #ifdef CONFIG_HAS_DATAFLASH
68 extern int AT91F_DataflashInit(void);
69 extern void dataflash_print_info(void);
72 #ifdef CONFIG_DRIVER_RTL8019
73 extern void rtl8019_get_enetaddr (uchar * addr);
76 #if defined(CONFIG_HARD_I2C) || \
77 defined(CONFIG_SOFT_I2C)
82 /************************************************************************
83 * Coloured LED functionality
84 ************************************************************************
85 * May be supplied by boards if desired
87 void inline __coloured_LED_init (void) {}
88 void coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
89 void inline __red_LED_on (void) {}
90 void red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
91 void inline __red_LED_off(void) {}
92 void red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
93 void inline __green_LED_on(void) {}
94 void green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
95 void inline __green_LED_off(void) {}
96 void green_LED_off(void) __attribute__((weak, alias("__green_LED_off")));
97 void inline __yellow_LED_on(void) {}
98 void yellow_LED_on(void) __attribute__((weak, alias("__yellow_LED_on")));
99 void inline __yellow_LED_off(void) {}
100 void yellow_LED_off(void) __attribute__((weak, alias("__yellow_LED_off")));
101 void inline __blue_LED_on(void) {}
102 void blue_LED_on(void) __attribute__((weak, alias("__blue_LED_on")));
103 void inline __blue_LED_off(void) {}
104 void blue_LED_off(void) __attribute__((weak, alias("__blue_LED_off")));
106 /************************************************************************
108 ************************************************************************
109 * Some of this code should be moved into the core functions,
110 * or dropped completely,
111 * but let's get it working (again) first...
114 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
115 #define CONFIG_BAUDRATE 115200
117 static int init_baudrate (void)
119 char tmp[64]; /* long enough for environment variables */
120 int i = getenv_f("baudrate", tmp, sizeof (tmp));
122 gd->baudrate = (i > 0)
123 ? (int) simple_strtoul (tmp, NULL, 10)
129 static int display_banner (void)
131 printf ("\n\n%s\n\n", version_string);
132 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
134 _bss_start_ofs+_TEXT_BASE, _bss_end_ofs+_TEXT_BASE);
135 #ifdef CONFIG_MODEM_SUPPORT
136 debug ("Modem Support enabled\n");
138 #ifdef CONFIG_USE_IRQ
139 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
140 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
147 * WARNING: this code looks "cleaner" than the PowerPC version, but
148 * has the disadvantage that you either get nothing, or everything.
149 * On PowerPC, you might see "DRAM: " before the system hangs - which
150 * gives a simple yet clear indication which part of the
151 * initialization if failing.
153 static int display_dram_config (void)
158 puts ("RAM Configuration:\n");
160 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
161 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
162 print_size (gd->bd->bi_dram[i].size, "\n");
167 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
168 size += gd->bd->bi_dram[i].size;
171 print_size(size, "\n");
177 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
178 static int init_func_i2c (void)
181 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
187 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
189 static int arm_pci_init(void)
194 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
197 * Breathe some life into the board...
199 * Initialize a serial port as console, and carry out some hardware
202 * The first part of initialization is running from Flash memory;
203 * its main purpose is to initialize the RAM so that we
204 * can relocate the monitor code to RAM.
208 * All attempts to come up with a "common" initialization sequence
209 * that works for all boards and architectures failed: some of the
210 * requirements are just _too_ different. To get rid of the resulting
211 * mess of board dependent #ifdef'ed code we now make the whole
212 * initialization sequence configurable to the user.
214 * The requirements for any new initalization function is simple: it
215 * receives a pointer to the "global data" structure as it's only
216 * argument, and returns an integer return code, where 0 means
217 * "continue" and != 0 means "fatal error, hang the system".
219 typedef int (init_fnc_t) (void);
221 int print_cpuinfo (void);
223 void __dram_init_banksize(void)
225 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
226 gd->bd->bi_dram[0].size = gd->ram_size;
228 void dram_init_banksize(void)
229 __attribute__((weak, alias("__dram_init_banksize")));
231 init_fnc_t *init_sequence[] = {
232 #if defined(CONFIG_ARCH_CPU_INIT)
233 arch_cpu_init, /* basic arch cpu dependent setup */
235 #if defined(CONFIG_BOARD_EARLY_INIT_F)
238 timer_init, /* initialize timer */
239 #ifdef CONFIG_FSL_ESDHC
242 env_init, /* initialize environment */
243 init_baudrate, /* initialze baudrate settings */
244 serial_init, /* serial communications setup */
245 console_init_f, /* stage 1 init of console */
246 display_banner, /* say that we are here */
247 #if defined(CONFIG_DISPLAY_CPUINFO)
248 print_cpuinfo, /* display cpu info (and speed) */
250 #if defined(CONFIG_DISPLAY_BOARDINFO)
251 checkboard, /* display board info */
253 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
256 dram_init, /* configure available RAM banks */
260 void board_init_f (ulong bootflag)
263 init_fnc_t **init_fnc_ptr;
267 /* Pointer is writable since we allocated a register for it */
268 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
269 /* compiler optimization barrier needed for GCC >= 3.4 */
270 __asm__ __volatile__("": : :"memory");
272 memset ((void*)gd, 0, sizeof (gd_t));
274 gd->mon_len = _bss_end_ofs;
276 #ifdef CONFIG_MACH_TYPE
277 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
280 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
281 if ((*init_fnc_ptr)() != 0) {
286 debug ("monitor len: %08lX\n", gd->mon_len);
288 * Ram is setup, size stored in gd !!
290 debug ("ramsize: %08lX\n", gd->ram_size);
291 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
293 * Subtract specified amount of memory to hide so that it won't
294 * get "touched" at all by U-Boot. By fixing up gd->ram_size
295 * the Linux kernel should now get passed the now "corrected"
296 * memory size and won't touch it either. This should work
297 * for arch/ppc and arch/powerpc. Only Linux board ports in
298 * arch/powerpc with bootwrapper support, that recalculate the
299 * memory size from the SDRAM controller setup will have to
302 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
305 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
307 #ifdef CONFIG_LOGBUFFER
308 #ifndef CONFIG_ALT_LB_ADDR
309 /* reserve kernel log buffer */
310 addr -= (LOGBUFF_RESERVE);
311 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
317 * reserve protected RAM
319 i = getenv_r ("pram", (char *)tmp, sizeof (tmp));
320 reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM;
321 addr -= (reg << 10); /* size is in kB */
322 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
323 #endif /* CONFIG_PRAM */
325 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
326 /* reserve TLB table */
329 /* round down to next 64 kB limit */
330 addr &= ~(0x10000 - 1);
333 debug ("TLB table at: %08lx\n", addr);
336 /* round down to next 4 kB limit */
338 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
341 #ifdef CONFIG_FB_ADDR
342 gd->fb_base = CONFIG_FB_ADDR;
344 /* reserve memory for LCD display (always full pages) */
345 addr = lcd_setmem (addr);
347 #endif /* CONFIG_FB_ADDR */
348 #endif /* CONFIG_LCD */
351 * reserve memory for U-Boot code, data & bss
352 * round down to next 4 kB limit
357 debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
359 #ifndef CONFIG_SPL_BUILD
361 * reserve memory for malloc() arena
363 addr_sp = addr - TOTAL_MALLOC_LEN;
364 debug ("Reserving %dk for malloc() at: %08lx\n",
365 TOTAL_MALLOC_LEN >> 10, addr_sp);
367 * (permanently) allocate a Board Info struct
368 * and a permanent copy of the "global" data
370 addr_sp -= sizeof (bd_t);
371 bd = (bd_t *) addr_sp;
373 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
374 sizeof (bd_t), addr_sp);
375 addr_sp -= sizeof (gd_t);
376 id = (gd_t *) addr_sp;
377 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
378 sizeof (gd_t), addr_sp);
380 /* setup stackpointer for exeptions */
381 gd->irq_sp = addr_sp;
382 #ifdef CONFIG_USE_IRQ
383 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
384 debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n",
385 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
387 /* leave 3 words for abort-stack */
390 /* 8-byte alignment for ABI compliance */
393 addr_sp += 128; /* leave 32 words for abort-stack */
394 gd->irq_sp = addr_sp;
397 debug ("New Stack Pointer is: %08lx\n", addr_sp);
400 post_bootmode_init();
401 post_run (NULL, POST_ROM | post_bootmode_get(0));
404 gd->bd->bi_baudrate = gd->baudrate;
405 /* Ram ist board specific, so move it to board code ... */
406 dram_init_banksize();
407 display_dram_config(); /* and display it */
409 gd->relocaddr = addr;
410 gd->start_addr_sp = addr_sp;
411 gd->reloc_off = addr - _TEXT_BASE;
412 debug ("relocation Offset is: %08lx\n", gd->reloc_off);
413 memcpy (id, (void *)gd, sizeof (gd_t));
415 relocate_code (addr_sp, id, addr);
417 /* NOTREACHED - relocate_code() does not return */
420 #if !defined(CONFIG_SYS_NO_FLASH)
421 static char *failed = "*** failed ***\n";
424 /************************************************************************
426 * This is the next part if the initialization sequence: we are now
427 * running from RAM and have a "normal" C environment, i. e. global
428 * data can be written, BSS has been cleared, the stack size in not
429 * that critical any more, etc.
431 ************************************************************************
434 void board_init_r (gd_t *id, ulong dest_addr)
439 #if !defined(CONFIG_SYS_NO_FLASH)
446 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
448 monitor_flash_len = _end_ofs;
451 * I$, if needed, must be already enabled in start.S
455 debug ("monitor flash len: %08lX\n", monitor_flash_len);
456 board_init(); /* Setup chipselects */
458 #ifdef CONFIG_SERIAL_MULTI
462 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
464 #ifdef CONFIG_LOGBUFFER
465 logbuff_init_ptrs ();
468 post_output_backlog ();
471 /* The Malloc area is immediately below the monitor copy in DRAM */
472 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
473 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
475 #if !defined(CONFIG_SYS_NO_FLASH)
478 if ((flash_size = flash_init ()) > 0) {
479 # ifdef CONFIG_SYS_FLASH_CHECKSUM
480 print_size (flash_size, "");
482 * Compute and print flash CRC if flashchecksum is set to 'y'
484 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
486 s = getenv ("flashchecksum");
487 if (s && (*s == 'y')) {
488 printf (" CRC: %08X",
489 crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
493 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
494 print_size (flash_size, "\n");
495 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
502 #if defined(CONFIG_CMD_NAND)
504 nand_init(); /* go init the NAND */
507 #if defined(CONFIG_CMD_ONENAND)
511 #ifdef CONFIG_GENERIC_MMC
516 #ifdef CONFIG_HAS_DATAFLASH
517 AT91F_DataflashInit();
518 dataflash_print_info();
521 /* initialize environment */
524 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
529 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
531 stdio_init (); /* get the devices list going. */
535 #if defined(CONFIG_API)
540 console_init_r (); /* fully init console as a device */
542 #if defined(CONFIG_ARCH_MISC_INIT)
543 /* miscellaneous arch dependent initialisations */
546 #if defined(CONFIG_MISC_INIT_R)
547 /* miscellaneous platform dependent initialisations */
551 /* set up exceptions */
553 /* enable exceptions */
554 enable_interrupts ();
556 /* Perform network card initialisation if necessary */
557 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
558 /* XXX: this needs to be moved to board init */
559 if (getenv ("ethaddr")) {
561 eth_getenv_enetaddr("ethaddr", enetaddr);
562 smc_set_mac_addr(enetaddr);
564 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
566 /* Initialize from environment */
567 if ((s = getenv ("loadaddr")) != NULL) {
568 load_addr = simple_strtoul (s, NULL, 16);
570 #if defined(CONFIG_CMD_NET)
571 if ((s = getenv ("bootfile")) != NULL) {
572 copy_filename (BootFile, s, sizeof (BootFile));
576 #ifdef BOARD_LATE_INIT
580 #ifdef CONFIG_BITBANGMII
583 #if defined(CONFIG_CMD_NET)
584 #if defined(CONFIG_NET_MULTI)
587 eth_initialize(gd->bd);
588 #if defined(CONFIG_RESET_PHY_R)
589 debug ("Reset Ethernet PHY\n");
595 post_run (NULL, POST_RAM | post_bootmode_get(0));
598 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
600 * Export available size of memory for Linux,
601 * taking into account the protected RAM at top of memory
609 if ((s = getenv ("pram")) != NULL) {
610 pram = simple_strtoul (s, NULL, 10);
617 #ifdef CONFIG_LOGBUFFER
618 #ifndef CONFIG_ALT_LB_ADDR
619 /* Also take the logbuffer into account (pram is in kB) */
620 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
623 sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
624 setenv ("mem", (char *)memsz);
628 /* main_loop() can return to retry autoboot, if so just run it again. */
633 /* NOTREACHED - no way out of command loop except booting */
638 puts ("### ERROR ### Please RESET the board ###\n");