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
43 #include <environment.h>
45 #include <stdio_dev.h>
50 #include <onenand_uboot.h>
57 #ifdef CONFIG_BITBANGMII
61 DECLARE_GLOBAL_DATA_PTR;
63 ulong monitor_flash_len;
65 #ifdef CONFIG_HAS_DATAFLASH
66 extern int AT91F_DataflashInit(void);
67 extern void dataflash_print_info(void);
70 #if defined(CONFIG_HARD_I2C) || \
71 defined(CONFIG_SOFT_I2C)
75 /************************************************************************
76 * Coloured LED functionality
77 ************************************************************************
78 * May be supplied by boards if desired
80 inline void __coloured_LED_init(void) {}
81 void coloured_LED_init(void)
82 __attribute__((weak, alias("__coloured_LED_init")));
83 inline void __red_led_on(void) {}
84 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
85 inline void __red_led_off(void) {}
86 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
87 inline void __green_led_on(void) {}
88 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
89 inline void __green_led_off(void) {}
90 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
91 inline void __yellow_led_on(void) {}
92 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
93 inline void __yellow_led_off(void) {}
94 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
95 inline void __blue_led_on(void) {}
96 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
97 inline void __blue_led_off(void) {}
98 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
101 ************************************************************************
103 ************************************************************************
104 * Some of this code should be moved into the core functions,
105 * or dropped completely,
106 * but let's get it working (again) first...
109 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
110 #define CONFIG_BAUDRATE 115200
113 static int init_baudrate(void)
115 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
119 static int display_banner(void)
121 printf("\n\n%s\n\n", version_string);
122 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
124 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
125 #ifdef CONFIG_MODEM_SUPPORT
126 debug("Modem Support enabled\n");
128 #ifdef CONFIG_USE_IRQ
129 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
130 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
137 * WARNING: this code looks "cleaner" than the PowerPC version, but
138 * has the disadvantage that you either get nothing, or everything.
139 * On PowerPC, you might see "DRAM: " before the system hangs - which
140 * gives a simple yet clear indication which part of the
141 * initialization if failing.
143 static int display_dram_config(void)
148 puts("RAM Configuration:\n");
150 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
151 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
152 print_size(gd->bd->bi_dram[i].size, "\n");
157 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
158 size += gd->bd->bi_dram[i].size;
161 print_size(size, "\n");
167 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
168 static int init_func_i2c(void)
171 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
177 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
179 static int arm_pci_init(void)
184 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
187 * Breathe some life into the board...
189 * Initialize a serial port as console, and carry out some hardware
192 * The first part of initialization is running from Flash memory;
193 * its main purpose is to initialize the RAM so that we
194 * can relocate the monitor code to RAM.
198 * All attempts to come up with a "common" initialization sequence
199 * that works for all boards and architectures failed: some of the
200 * requirements are just _too_ different. To get rid of the resulting
201 * mess of board dependent #ifdef'ed code we now make the whole
202 * initialization sequence configurable to the user.
204 * The requirements for any new initalization function is simple: it
205 * receives a pointer to the "global data" structure as it's only
206 * argument, and returns an integer return code, where 0 means
207 * "continue" and != 0 means "fatal error, hang the system".
209 typedef int (init_fnc_t) (void);
211 int print_cpuinfo(void);
213 void __dram_init_banksize(void)
215 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
216 gd->bd->bi_dram[0].size = gd->ram_size;
218 void dram_init_banksize(void)
219 __attribute__((weak, alias("__dram_init_banksize")));
221 int __arch_cpu_init(void)
225 int arch_cpu_init(void)
226 __attribute__((weak, alias("__arch_cpu_init")));
228 int __power_init_board(void)
232 int power_init_board(void)
233 __attribute__((weak, alias("__power_init_board")));
235 init_fnc_t *init_sequence[] = {
236 arch_cpu_init, /* basic arch cpu dependent setup */
237 #ifdef CONFIG_OF_CONTROL
240 #if defined(CONFIG_BOARD_EARLY_INIT_F)
243 timer_init, /* initialize timer */
244 #ifdef CONFIG_BOARD_POSTCLK_INIT
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;
277 void *new_fdt = NULL;
280 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
282 memset((void *)gd, 0, sizeof(gd_t));
284 gd->mon_len = _bss_end_ofs;
285 #ifdef CONFIG_OF_EMBED
286 /* Get a pointer to the FDT */
287 gd->fdt_blob = _binary_dt_dtb_start;
288 #elif defined CONFIG_OF_SEPARATE
289 /* FDT is at end of image */
290 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
292 /* Allow the early environment to override the fdt address */
293 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
294 (uintptr_t)gd->fdt_blob);
296 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
297 if ((*init_fnc_ptr)() != 0) {
302 #ifdef CONFIG_OF_CONTROL
303 /* For now, put this check after the console is ready */
304 if (fdtdec_prepare_fdt()) {
305 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
306 "doc/README.fdt-control");
310 debug("monitor len: %08lX\n", gd->mon_len);
312 * Ram is setup, size stored in gd !!
314 debug("ramsize: %08lX\n", gd->ram_size);
315 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
317 * Subtract specified amount of memory to hide so that it won't
318 * get "touched" at all by U-Boot. By fixing up gd->ram_size
319 * the Linux kernel should now get passed the now "corrected"
320 * memory size and won't touch it either. This should work
321 * for arch/ppc and arch/powerpc. Only Linux board ports in
322 * arch/powerpc with bootwrapper support, that recalculate the
323 * memory size from the SDRAM controller setup will have to
326 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
329 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
331 #ifdef CONFIG_LOGBUFFER
332 #ifndef CONFIG_ALT_LB_ADDR
333 /* reserve kernel log buffer */
334 addr -= (LOGBUFF_RESERVE);
335 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
342 * reserve protected RAM
344 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
345 addr -= (reg << 10); /* size is in kB */
346 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
347 #endif /* CONFIG_PRAM */
349 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
350 /* reserve TLB table */
351 gd->tlb_size = 4096 * 4;
352 addr -= gd->tlb_size;
354 /* round down to next 64 kB limit */
355 addr &= ~(0x10000 - 1);
358 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->tlb_size);
361 /* round down to next 4 kB limit */
363 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
366 #ifdef CONFIG_FB_ADDR
367 gd->fb_base = CONFIG_FB_ADDR;
369 /* reserve memory for LCD display (always full pages) */
370 addr = lcd_setmem(addr);
372 #endif /* CONFIG_FB_ADDR */
373 #endif /* CONFIG_LCD */
376 * reserve memory for U-Boot code, data & bss
377 * round down to next 4 kB limit
382 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
384 #ifndef CONFIG_SPL_BUILD
386 * reserve memory for malloc() arena
388 addr_sp = addr - TOTAL_MALLOC_LEN;
389 debug("Reserving %dk for malloc() at: %08lx\n",
390 TOTAL_MALLOC_LEN >> 10, addr_sp);
392 * (permanently) allocate a Board Info struct
393 * and a permanent copy of the "global" data
395 addr_sp -= sizeof (bd_t);
396 bd = (bd_t *) addr_sp;
398 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
399 sizeof (bd_t), addr_sp);
401 #ifdef CONFIG_MACH_TYPE
402 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
405 addr_sp -= sizeof (gd_t);
406 id = (gd_t *) addr_sp;
407 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
408 sizeof (gd_t), addr_sp);
410 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
412 * If the device tree is sitting immediate above our image then we
413 * must relocate it. If it is embedded in the data section, then it
414 * will be relocated with other data.
417 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
420 new_fdt = (void *)addr_sp;
421 debug("Reserving %zu Bytes for FDT at: %08lx\n",
426 /* setup stackpointer for exeptions */
427 gd->irq_sp = addr_sp;
428 #ifdef CONFIG_USE_IRQ
429 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
430 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
431 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
433 /* leave 3 words for abort-stack */
436 /* 8-byte alignment for ABI compliance */
439 addr_sp += 128; /* leave 32 words for abort-stack */
440 gd->irq_sp = addr_sp;
443 debug("New Stack Pointer is: %08lx\n", addr_sp);
446 post_bootmode_init();
447 post_run(NULL, POST_ROM | post_bootmode_get(0));
450 gd->bd->bi_baudrate = gd->baudrate;
451 /* Ram ist board specific, so move it to board code ... */
452 dram_init_banksize();
453 display_dram_config(); /* and display it */
455 gd->relocaddr = addr;
456 gd->start_addr_sp = addr_sp;
457 gd->reloc_off = addr - _TEXT_BASE;
458 debug("relocation Offset is: %08lx\n", gd->reloc_off);
460 memcpy(new_fdt, gd->fdt_blob, fdt_size);
461 gd->fdt_blob = new_fdt;
463 memcpy(id, (void *)gd, sizeof(gd_t));
466 #if !defined(CONFIG_SYS_NO_FLASH)
467 static char *failed = "*** failed ***\n";
471 * Tell if it's OK to load the environment early in boot.
473 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
474 * if this is OK (defaulting to saying it's not OK).
476 * NOTE: Loading the environment early can be a bad idea if security is
477 * important, since no verification is done on the environment.
479 * @return 0 if environment should not be loaded, !=0 if it is ok to load
481 static int should_load_env(void)
483 #ifdef CONFIG_OF_CONTROL
484 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 0);
485 #elif defined CONFIG_DELAY_ENVIRONMENT
492 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
493 static void display_fdt_model(const void *blob)
497 model = (char *)fdt_getprop(blob, 0, "model", NULL);
498 printf("Model: %s\n", model ? model : "<unknown>");
502 /************************************************************************
504 * This is the next part if the initialization sequence: we are now
505 * running from RAM and have a "normal" C environment, i. e. global
506 * data can be written, BSS has been cleared, the stack size in not
507 * that critical any more, etc.
509 ************************************************************************
512 void board_init_r(gd_t *id, ulong dest_addr)
515 #if !defined(CONFIG_SYS_NO_FLASH)
519 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
520 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
522 monitor_flash_len = _end_ofs;
527 debug("monitor flash len: %08lX\n", monitor_flash_len);
528 board_init(); /* Setup chipselects */
530 * TODO: printing of the clock inforamtion of the board is now
531 * implemented as part of bdinfo command. Currently only support for
532 * davinci SOC's is added. Remove this check once all the board
536 set_cpu_clk_info(); /* Setup clock information */
540 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
542 #ifdef CONFIG_LOGBUFFER
546 post_output_backlog();
549 /* The Malloc area is immediately below the monitor copy in DRAM */
550 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
551 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
553 #ifdef CONFIG_ARCH_EARLY_INIT_R
558 #if !defined(CONFIG_SYS_NO_FLASH)
561 flash_size = flash_init();
562 if (flash_size > 0) {
563 # ifdef CONFIG_SYS_FLASH_CHECKSUM
564 print_size(flash_size, "");
566 * Compute and print flash CRC if flashchecksum is set to 'y'
568 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
570 if (getenv_yesno("flashchecksum") == 1) {
571 printf(" CRC: %08X", crc32(0,
572 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
576 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
577 print_size(flash_size, "\n");
578 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
585 #if defined(CONFIG_CMD_NAND)
587 nand_init(); /* go init the NAND */
590 #if defined(CONFIG_CMD_ONENAND)
594 #ifdef CONFIG_GENERIC_MMC
596 mmc_initialize(gd->bd);
599 #ifdef CONFIG_HAS_DATAFLASH
600 AT91F_DataflashInit();
601 dataflash_print_info();
604 /* initialize environment */
605 if (should_load_env())
608 set_default_env(NULL);
610 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
614 stdio_init(); /* get the devices list going. */
618 #if defined(CONFIG_API)
623 console_init_r(); /* fully init console as a device */
625 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
626 # ifdef CONFIG_OF_CONTROL
627 /* Put this here so it appears on the LCD, now it is ready */
628 display_fdt_model(gd->fdt_blob);
634 #if defined(CONFIG_ARCH_MISC_INIT)
635 /* miscellaneous arch dependent initialisations */
638 #if defined(CONFIG_MISC_INIT_R)
639 /* miscellaneous platform dependent initialisations */
643 /* set up exceptions */
645 /* enable exceptions */
648 /* Initialize from environment */
649 load_addr = getenv_ulong("loadaddr", 16, load_addr);
651 #ifdef CONFIG_BOARD_LATE_INIT
655 #ifdef CONFIG_BITBANGMII
658 #if defined(CONFIG_CMD_NET)
660 eth_initialize(gd->bd);
661 #if defined(CONFIG_RESET_PHY_R)
662 debug("Reset Ethernet PHY\n");
668 post_run(NULL, POST_RAM | post_bootmode_get(0));
671 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
673 * Export available size of memory for Linux,
674 * taking into account the protected RAM at top of memory
681 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
683 #ifdef CONFIG_LOGBUFFER
684 #ifndef CONFIG_ALT_LB_ADDR
685 /* Also take the logbuffer into account (pram is in kB) */
686 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
689 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
690 setenv("mem", (char *)memsz);
694 /* main_loop() can return to retry autoboot, if so just run it again. */
699 /* NOTREACHED - no way out of command loop except booting */
704 puts("### ERROR ### Please RESET the board ###\n");