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>
56 #ifdef CONFIG_BITBANGMII
60 #ifdef CONFIG_DRIVER_SMC91111
61 #include "../drivers/net/smc91111.h"
63 #ifdef CONFIG_DRIVER_LAN91C96
64 #include "../drivers/net/lan91c96.h"
67 DECLARE_GLOBAL_DATA_PTR;
69 ulong monitor_flash_len;
71 #ifdef CONFIG_HAS_DATAFLASH
72 extern int AT91F_DataflashInit(void);
73 extern void dataflash_print_info(void);
76 #ifdef CONFIG_DRIVER_RTL8019
77 extern void rtl8019_get_enetaddr (uchar * addr);
80 #if defined(CONFIG_HARD_I2C) || \
81 defined(CONFIG_SOFT_I2C)
85 /************************************************************************
86 * Coloured LED functionality
87 ************************************************************************
88 * May be supplied by boards if desired
90 inline void __coloured_LED_init(void) {}
91 void coloured_LED_init(void)
92 __attribute__((weak, alias("__coloured_LED_init")));
93 inline void __red_led_on(void) {}
94 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
95 inline void __red_led_off(void) {}
96 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
97 inline void __green_led_on(void) {}
98 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
99 inline void __green_led_off(void) {}
100 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
101 inline void __yellow_led_on(void) {}
102 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
103 inline void __yellow_led_off(void) {}
104 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
105 inline void __blue_led_on(void) {}
106 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
107 inline void __blue_led_off(void) {}
108 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
111 ************************************************************************
113 ************************************************************************
114 * Some of this code should be moved into the core functions,
115 * or dropped completely,
116 * but let's get it working (again) first...
119 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
120 #define CONFIG_BAUDRATE 115200
123 static int init_baudrate(void)
125 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
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 #ifdef CONFIG_OF_CONTROL
241 timer_init, /* initialize timer */
242 #ifdef CONFIG_FSL_ESDHC
245 env_init, /* initialize environment */
246 init_baudrate, /* initialze baudrate settings */
247 serial_init, /* serial communications setup */
248 console_init_f, /* stage 1 init of console */
249 display_banner, /* say that we are here */
250 #if defined(CONFIG_DISPLAY_CPUINFO)
251 print_cpuinfo, /* display cpu info (and speed) */
253 #if defined(CONFIG_DISPLAY_BOARDINFO)
254 checkboard, /* display board info */
256 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
259 dram_init, /* configure available RAM banks */
263 void board_init_f(ulong bootflag)
266 init_fnc_t **init_fnc_ptr;
273 /* Pointer is writable since we allocated a register for it */
274 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
275 /* compiler optimization barrier needed for GCC >= 3.4 */
276 __asm__ __volatile__("": : :"memory");
278 memset((void *)gd, 0, sizeof(gd_t));
280 gd->mon_len = _bss_end_ofs;
281 #ifdef CONFIG_OF_EMBED
282 /* Get a pointer to the FDT */
283 gd->fdt_blob = _binary_dt_dtb_start;
284 #elif defined CONFIG_OF_SEPARATE
285 /* FDT is at end of image */
286 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
288 /* Allow the early environment to override the fdt address */
289 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
290 (uintptr_t)gd->fdt_blob);
292 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
293 if ((*init_fnc_ptr)() != 0) {
298 debug("monitor len: %08lX\n", gd->mon_len);
300 * Ram is setup, size stored in gd !!
302 debug("ramsize: %08lX\n", gd->ram_size);
303 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
305 * Subtract specified amount of memory to hide so that it won't
306 * get "touched" at all by U-Boot. By fixing up gd->ram_size
307 * the Linux kernel should now get passed the now "corrected"
308 * memory size and won't touch it either. This should work
309 * for arch/ppc and arch/powerpc. Only Linux board ports in
310 * arch/powerpc with bootwrapper support, that recalculate the
311 * memory size from the SDRAM controller setup will have to
314 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
317 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
319 #ifdef CONFIG_LOGBUFFER
320 #ifndef CONFIG_ALT_LB_ADDR
321 /* reserve kernel log buffer */
322 addr -= (LOGBUFF_RESERVE);
323 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
330 * reserve protected RAM
332 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
333 addr -= (reg << 10); /* size is in kB */
334 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
335 #endif /* CONFIG_PRAM */
337 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
338 /* reserve TLB table */
341 /* round down to next 64 kB limit */
342 addr &= ~(0x10000 - 1);
345 debug("TLB table at: %08lx\n", addr);
348 /* round down to next 4 kB limit */
350 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
353 #ifdef CONFIG_FB_ADDR
354 gd->fb_base = CONFIG_FB_ADDR;
356 /* reserve memory for LCD display (always full pages) */
357 addr = lcd_setmem(addr);
359 #endif /* CONFIG_FB_ADDR */
360 #endif /* CONFIG_LCD */
363 * reserve memory for U-Boot code, data & bss
364 * round down to next 4 kB limit
369 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
371 #ifndef CONFIG_SPL_BUILD
373 * reserve memory for malloc() arena
375 addr_sp = addr - TOTAL_MALLOC_LEN;
376 debug("Reserving %dk for malloc() at: %08lx\n",
377 TOTAL_MALLOC_LEN >> 10, addr_sp);
379 * (permanently) allocate a Board Info struct
380 * and a permanent copy of the "global" data
382 addr_sp -= sizeof (bd_t);
383 bd = (bd_t *) addr_sp;
385 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
386 sizeof (bd_t), addr_sp);
388 #ifdef CONFIG_MACH_TYPE
389 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
392 addr_sp -= sizeof (gd_t);
393 id = (gd_t *) addr_sp;
394 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
395 sizeof (gd_t), addr_sp);
397 /* setup stackpointer for exeptions */
398 gd->irq_sp = addr_sp;
399 #ifdef CONFIG_USE_IRQ
400 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
401 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
402 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
404 /* leave 3 words for abort-stack */
407 /* 8-byte alignment for ABI compliance */
410 addr_sp += 128; /* leave 32 words for abort-stack */
411 gd->irq_sp = addr_sp;
414 debug("New Stack Pointer is: %08lx\n", addr_sp);
417 post_bootmode_init();
418 post_run(NULL, POST_ROM | post_bootmode_get(0));
421 gd->bd->bi_baudrate = gd->baudrate;
422 /* Ram ist board specific, so move it to board code ... */
423 dram_init_banksize();
424 display_dram_config(); /* and display it */
426 gd->relocaddr = addr;
427 gd->start_addr_sp = addr_sp;
428 gd->reloc_off = addr - _TEXT_BASE;
429 debug("relocation Offset is: %08lx\n", gd->reloc_off);
430 memcpy(id, (void *)gd, sizeof(gd_t));
432 relocate_code(addr_sp, id, addr);
434 /* NOTREACHED - relocate_code() does not return */
437 #if !defined(CONFIG_SYS_NO_FLASH)
438 static char *failed = "*** failed ***\n";
442 ************************************************************************
444 * This is the next part if the initialization sequence: we are now
445 * running from RAM and have a "normal" C environment, i. e. global
446 * data can be written, BSS has been cleared, the stack size in not
447 * that critical any more, etc.
449 ************************************************************************
452 void board_init_r(gd_t *id, ulong dest_addr)
455 #if !defined(CONFIG_SYS_NO_FLASH)
461 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
463 monitor_flash_len = _end_ofs;
468 debug("monitor flash len: %08lX\n", monitor_flash_len);
469 board_init(); /* Setup chipselects */
471 #ifdef CONFIG_SERIAL_MULTI
475 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
477 #ifdef CONFIG_LOGBUFFER
481 post_output_backlog();
484 /* The Malloc area is immediately below the monitor copy in DRAM */
485 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
486 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
488 #if !defined(CONFIG_SYS_NO_FLASH)
491 flash_size = flash_init();
492 if (flash_size > 0) {
493 # ifdef CONFIG_SYS_FLASH_CHECKSUM
494 char *s = getenv("flashchecksum");
496 print_size(flash_size, "");
498 * Compute and print flash CRC if flashchecksum is set to 'y'
500 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
502 if (s && (*s == 'y')) {
503 printf(" CRC: %08X", crc32(0,
504 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
508 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
509 print_size(flash_size, "\n");
510 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
517 #if defined(CONFIG_CMD_NAND)
519 nand_init(); /* go init the NAND */
522 #if defined(CONFIG_CMD_ONENAND)
526 #ifdef CONFIG_GENERIC_MMC
528 mmc_initialize(gd->bd);
531 #ifdef CONFIG_HAS_DATAFLASH
532 AT91F_DataflashInit();
533 dataflash_print_info();
536 /* initialize environment */
539 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
544 gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
546 stdio_init(); /* get the devices list going. */
550 #if defined(CONFIG_API)
555 console_init_r(); /* fully init console as a device */
557 #if defined(CONFIG_ARCH_MISC_INIT)
558 /* miscellaneous arch dependent initialisations */
561 #if defined(CONFIG_MISC_INIT_R)
562 /* miscellaneous platform dependent initialisations */
566 /* set up exceptions */
568 /* enable exceptions */
571 /* Perform network card initialisation if necessary */
572 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
573 /* XXX: this needs to be moved to board init */
574 if (getenv("ethaddr")) {
576 eth_getenv_enetaddr("ethaddr", enetaddr);
577 smc_set_mac_addr(enetaddr);
579 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
581 /* Initialize from environment */
582 load_addr = getenv_ulong("loadaddr", 16, load_addr);
583 #if defined(CONFIG_CMD_NET)
585 char *s = getenv("bootfile");
588 copy_filename(BootFile, s, sizeof(BootFile));
592 #ifdef BOARD_LATE_INIT
596 #ifdef CONFIG_BITBANGMII
599 #if defined(CONFIG_CMD_NET)
601 eth_initialize(gd->bd);
602 #if defined(CONFIG_RESET_PHY_R)
603 debug("Reset Ethernet PHY\n");
609 post_run(NULL, POST_RAM | post_bootmode_get(0));
612 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
614 * Export available size of memory for Linux,
615 * taking into account the protected RAM at top of memory
622 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
624 #ifdef CONFIG_LOGBUFFER
625 #ifndef CONFIG_ALT_LB_ADDR
626 /* Also take the logbuffer into account (pram is in kB) */
627 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
630 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
631 setenv("mem", (char *)memsz);
635 /* main_loop() can return to retry autoboot, if so just run it again. */
640 /* NOTREACHED - no way out of command loop except booting */
645 puts("### ERROR ### Please RESET the board ###\n");