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>
56 #include <asm/sections.h>
58 #ifdef CONFIG_BITBANGMII
62 DECLARE_GLOBAL_DATA_PTR;
64 ulong monitor_flash_len;
66 #ifdef CONFIG_HAS_DATAFLASH
67 extern int AT91F_DataflashInit(void);
68 extern void dataflash_print_info(void);
71 #if defined(CONFIG_HARD_I2C) || \
72 defined(CONFIG_SOFT_I2C)
76 /************************************************************************
77 * Coloured LED functionality
78 ************************************************************************
79 * May be supplied by boards if desired
81 inline void __coloured_LED_init(void) {}
82 void coloured_LED_init(void)
83 __attribute__((weak, alias("__coloured_LED_init")));
84 inline void __red_led_on(void) {}
85 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
86 inline void __red_led_off(void) {}
87 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
88 inline void __green_led_on(void) {}
89 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
90 inline void __green_led_off(void) {}
91 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
92 inline void __yellow_led_on(void) {}
93 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
94 inline void __yellow_led_off(void) {}
95 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
96 inline void __blue_led_on(void) {}
97 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
98 inline void __blue_led_off(void) {}
99 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
102 ************************************************************************
104 ************************************************************************
105 * Some of this code should be moved into the core functions,
106 * or dropped completely,
107 * but let's get it working (again) first...
110 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
111 #define CONFIG_BAUDRATE 115200
114 static int init_baudrate(void)
116 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
120 static int display_banner(void)
122 printf("\n\n%s\n\n", version_string);
123 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
125 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
126 #ifdef CONFIG_MODEM_SUPPORT
127 debug("Modem Support enabled\n");
129 #ifdef CONFIG_USE_IRQ
130 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
131 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
138 * WARNING: this code looks "cleaner" than the PowerPC version, but
139 * has the disadvantage that you either get nothing, or everything.
140 * On PowerPC, you might see "DRAM: " before the system hangs - which
141 * gives a simple yet clear indication which part of the
142 * initialization if failing.
144 static int display_dram_config(void)
149 puts("RAM Configuration:\n");
151 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
152 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
153 print_size(gd->bd->bi_dram[i].size, "\n");
158 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
159 size += gd->bd->bi_dram[i].size;
162 print_size(size, "\n");
168 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
169 static int init_func_i2c(void)
172 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
178 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
180 static int arm_pci_init(void)
185 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
188 * Breathe some life into the board...
190 * Initialize a serial port as console, and carry out some hardware
193 * The first part of initialization is running from Flash memory;
194 * its main purpose is to initialize the RAM so that we
195 * can relocate the monitor code to RAM.
199 * All attempts to come up with a "common" initialization sequence
200 * that works for all boards and architectures failed: some of the
201 * requirements are just _too_ different. To get rid of the resulting
202 * mess of board dependent #ifdef'ed code we now make the whole
203 * initialization sequence configurable to the user.
205 * The requirements for any new initalization function is simple: it
206 * receives a pointer to the "global data" structure as it's only
207 * argument, and returns an integer return code, where 0 means
208 * "continue" and != 0 means "fatal error, hang the system".
210 typedef int (init_fnc_t) (void);
212 int print_cpuinfo(void);
214 void __dram_init_banksize(void)
216 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
217 gd->bd->bi_dram[0].size = gd->ram_size;
219 void dram_init_banksize(void)
220 __attribute__((weak, alias("__dram_init_banksize")));
222 int __arch_cpu_init(void)
226 int arch_cpu_init(void)
227 __attribute__((weak, alias("__arch_cpu_init")));
229 int __power_init_board(void)
233 int power_init_board(void)
234 __attribute__((weak, alias("__power_init_board")));
236 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
237 static int mark_bootstage(void)
239 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
244 init_fnc_t *init_sequence[] = {
245 arch_cpu_init, /* basic arch cpu dependent setup */
247 #ifdef CONFIG_OF_CONTROL
250 #if defined(CONFIG_BOARD_EARLY_INIT_F)
253 timer_init, /* initialize timer */
254 #ifdef CONFIG_BOARD_POSTCLK_INIT
257 #ifdef CONFIG_FSL_ESDHC
260 env_init, /* initialize environment */
261 init_baudrate, /* initialze baudrate settings */
262 serial_init, /* serial communications setup */
263 console_init_f, /* stage 1 init of console */
264 display_banner, /* say that we are here */
265 #if defined(CONFIG_DISPLAY_CPUINFO)
266 print_cpuinfo, /* display cpu info (and speed) */
268 #if defined(CONFIG_DISPLAY_BOARDINFO)
269 checkboard, /* display board info */
271 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
274 dram_init, /* configure available RAM banks */
278 void board_init_f(ulong bootflag)
281 init_fnc_t **init_fnc_ptr;
287 void *new_fdt = NULL;
290 memset((void *)gd, 0, sizeof(gd_t));
292 gd->mon_len = _bss_end_ofs;
293 #ifdef CONFIG_OF_EMBED
294 /* Get a pointer to the FDT */
295 gd->fdt_blob = _binary_dt_dtb_start;
296 #elif defined CONFIG_OF_SEPARATE
297 /* FDT is at end of image */
298 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
300 /* Allow the early environment to override the fdt address */
301 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
302 (uintptr_t)gd->fdt_blob);
304 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
305 if ((*init_fnc_ptr)() != 0) {
310 #ifdef CONFIG_OF_CONTROL
311 /* For now, put this check after the console is ready */
312 if (fdtdec_prepare_fdt()) {
313 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
314 "doc/README.fdt-control");
318 debug("monitor len: %08lX\n", gd->mon_len);
320 * Ram is setup, size stored in gd !!
322 debug("ramsize: %08lX\n", gd->ram_size);
323 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
325 * Subtract specified amount of memory to hide so that it won't
326 * get "touched" at all by U-Boot. By fixing up gd->ram_size
327 * the Linux kernel should now get passed the now "corrected"
328 * memory size and won't touch it either. This should work
329 * for arch/ppc and arch/powerpc. Only Linux board ports in
330 * arch/powerpc with bootwrapper support, that recalculate the
331 * memory size from the SDRAM controller setup will have to
334 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
337 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
339 #ifdef CONFIG_LOGBUFFER
340 #ifndef CONFIG_ALT_LB_ADDR
341 /* reserve kernel log buffer */
342 addr -= (LOGBUFF_RESERVE);
343 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
350 * reserve protected RAM
352 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
353 addr -= (reg << 10); /* size is in kB */
354 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
355 #endif /* CONFIG_PRAM */
357 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
358 /* reserve TLB table */
359 gd->arch.tlb_size = 4096 * 4;
360 addr -= gd->arch.tlb_size;
362 /* round down to next 64 kB limit */
363 addr &= ~(0x10000 - 1);
365 gd->arch.tlb_addr = addr;
366 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
369 /* round down to next 4 kB limit */
371 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
374 #ifdef CONFIG_FB_ADDR
375 gd->fb_base = CONFIG_FB_ADDR;
377 /* reserve memory for LCD display (always full pages) */
378 addr = lcd_setmem(addr);
380 #endif /* CONFIG_FB_ADDR */
381 #endif /* CONFIG_LCD */
384 * reserve memory for U-Boot code, data & bss
385 * round down to next 4 kB limit
390 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
392 #ifndef CONFIG_SPL_BUILD
394 * reserve memory for malloc() arena
396 addr_sp = addr - TOTAL_MALLOC_LEN;
397 debug("Reserving %dk for malloc() at: %08lx\n",
398 TOTAL_MALLOC_LEN >> 10, addr_sp);
400 * (permanently) allocate a Board Info struct
401 * and a permanent copy of the "global" data
403 addr_sp -= sizeof (bd_t);
404 bd = (bd_t *) addr_sp;
406 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
407 sizeof (bd_t), addr_sp);
409 #ifdef CONFIG_MACH_TYPE
410 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
413 addr_sp -= sizeof (gd_t);
414 id = (gd_t *) addr_sp;
415 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
416 sizeof (gd_t), addr_sp);
418 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
420 * If the device tree is sitting immediate above our image then we
421 * must relocate it. If it is embedded in the data section, then it
422 * will be relocated with other data.
425 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
428 new_fdt = (void *)addr_sp;
429 debug("Reserving %zu Bytes for FDT at: %08lx\n",
434 /* setup stackpointer for exeptions */
435 gd->irq_sp = addr_sp;
436 #ifdef CONFIG_USE_IRQ
437 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
438 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
439 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
441 /* leave 3 words for abort-stack */
444 /* 8-byte alignment for ABI compliance */
447 addr_sp += 128; /* leave 32 words for abort-stack */
448 gd->irq_sp = addr_sp;
451 debug("New Stack Pointer is: %08lx\n", addr_sp);
454 post_bootmode_init();
455 post_run(NULL, POST_ROM | post_bootmode_get(0));
458 gd->bd->bi_baudrate = gd->baudrate;
459 /* Ram ist board specific, so move it to board code ... */
460 dram_init_banksize();
461 display_dram_config(); /* and display it */
463 gd->relocaddr = addr;
464 gd->start_addr_sp = addr_sp;
465 gd->reloc_off = addr - _TEXT_BASE;
466 debug("relocation Offset is: %08lx\n", gd->reloc_off);
468 memcpy(new_fdt, gd->fdt_blob, fdt_size);
469 gd->fdt_blob = new_fdt;
471 memcpy(id, (void *)gd, sizeof(gd_t));
474 #if !defined(CONFIG_SYS_NO_FLASH)
475 static char *failed = "*** failed ***\n";
479 * Tell if it's OK to load the environment early in boot.
481 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
482 * if this is OK (defaulting to saying it's not OK).
484 * NOTE: Loading the environment early can be a bad idea if security is
485 * important, since no verification is done on the environment.
487 * @return 0 if environment should not be loaded, !=0 if it is ok to load
489 static int should_load_env(void)
491 #ifdef CONFIG_OF_CONTROL
492 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
493 #elif defined CONFIG_DELAY_ENVIRONMENT
500 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
501 static void display_fdt_model(const void *blob)
505 model = (char *)fdt_getprop(blob, 0, "model", NULL);
506 printf("Model: %s\n", model ? model : "<unknown>");
510 /************************************************************************
512 * This is the next part if the initialization sequence: we are now
513 * running from RAM and have a "normal" C environment, i. e. global
514 * data can be written, BSS has been cleared, the stack size in not
515 * that critical any more, etc.
517 ************************************************************************
520 void board_init_r(gd_t *id, ulong dest_addr)
523 #if !defined(CONFIG_SYS_NO_FLASH)
527 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
528 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
530 monitor_flash_len = _end_ofs;
535 debug("monitor flash len: %08lX\n", monitor_flash_len);
536 board_init(); /* Setup chipselects */
538 * TODO: printing of the clock inforamtion of the board is now
539 * implemented as part of bdinfo command. Currently only support for
540 * davinci SOC's is added. Remove this check once all the board
544 set_cpu_clk_info(); /* Setup clock information */
548 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
550 #ifdef CONFIG_LOGBUFFER
554 post_output_backlog();
557 /* The Malloc area is immediately below the monitor copy in DRAM */
558 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
559 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
561 #ifdef CONFIG_ARCH_EARLY_INIT_R
566 #if !defined(CONFIG_SYS_NO_FLASH)
569 flash_size = flash_init();
570 if (flash_size > 0) {
571 # ifdef CONFIG_SYS_FLASH_CHECKSUM
572 print_size(flash_size, "");
574 * Compute and print flash CRC if flashchecksum is set to 'y'
576 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
578 if (getenv_yesno("flashchecksum") == 1) {
579 printf(" CRC: %08X", crc32(0,
580 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
584 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
585 print_size(flash_size, "\n");
586 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
593 #if defined(CONFIG_CMD_NAND)
595 nand_init(); /* go init the NAND */
598 #if defined(CONFIG_CMD_ONENAND)
602 #ifdef CONFIG_GENERIC_MMC
604 mmc_initialize(gd->bd);
607 #ifdef CONFIG_HAS_DATAFLASH
608 AT91F_DataflashInit();
609 dataflash_print_info();
612 /* initialize environment */
613 if (should_load_env())
616 set_default_env(NULL);
618 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
622 stdio_init(); /* get the devices list going. */
626 #if defined(CONFIG_API)
631 console_init_r(); /* fully init console as a device */
633 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
634 # ifdef CONFIG_OF_CONTROL
635 /* Put this here so it appears on the LCD, now it is ready */
636 display_fdt_model(gd->fdt_blob);
642 #if defined(CONFIG_ARCH_MISC_INIT)
643 /* miscellaneous arch dependent initialisations */
646 #if defined(CONFIG_MISC_INIT_R)
647 /* miscellaneous platform dependent initialisations */
651 /* set up exceptions */
653 /* enable exceptions */
656 /* Initialize from environment */
657 load_addr = getenv_ulong("loadaddr", 16, load_addr);
659 #ifdef CONFIG_BOARD_LATE_INIT
663 #ifdef CONFIG_BITBANGMII
666 #if defined(CONFIG_CMD_NET)
668 eth_initialize(gd->bd);
669 #if defined(CONFIG_RESET_PHY_R)
670 debug("Reset Ethernet PHY\n");
676 post_run(NULL, POST_RAM | post_bootmode_get(0));
679 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
681 * Export available size of memory for Linux,
682 * taking into account the protected RAM at top of memory
689 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
691 #ifdef CONFIG_LOGBUFFER
692 #ifndef CONFIG_ALT_LB_ADDR
693 /* Also take the logbuffer into account (pram is in kB) */
694 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
697 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
698 setenv("mem", (char *)memsz);
702 /* main_loop() can return to retry autoboot, if so just run it again. */
707 /* NOTREACHED - no way out of command loop except booting */