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) || \
73 defined(CONFIG_SYS_I2C)
77 /************************************************************************
78 * Coloured LED functionality
79 ************************************************************************
80 * May be supplied by boards if desired
82 inline void __coloured_LED_init(void) {}
83 void coloured_LED_init(void)
84 __attribute__((weak, alias("__coloured_LED_init")));
85 inline void __red_led_on(void) {}
86 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
87 inline void __red_led_off(void) {}
88 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
89 inline void __green_led_on(void) {}
90 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
91 inline void __green_led_off(void) {}
92 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
93 inline void __yellow_led_on(void) {}
94 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
95 inline void __yellow_led_off(void) {}
96 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
97 inline void __blue_led_on(void) {}
98 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
99 inline void __blue_led_off(void) {}
100 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
103 ************************************************************************
105 ************************************************************************
106 * Some of this code should be moved into the core functions,
107 * or dropped completely,
108 * but let's get it working (again) first...
111 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
112 #define CONFIG_BAUDRATE 115200
115 static int init_baudrate(void)
117 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
121 static int display_banner(void)
123 printf("\n\n%s\n\n", version_string);
124 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
126 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
127 #ifdef CONFIG_MODEM_SUPPORT
128 debug("Modem Support enabled\n");
130 #ifdef CONFIG_USE_IRQ
131 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
132 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
139 * WARNING: this code looks "cleaner" than the PowerPC version, but
140 * has the disadvantage that you either get nothing, or everything.
141 * On PowerPC, you might see "DRAM: " before the system hangs - which
142 * gives a simple yet clear indication which part of the
143 * initialization if failing.
145 static int display_dram_config(void)
150 puts("RAM Configuration:\n");
152 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
153 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
154 print_size(gd->bd->bi_dram[i].size, "\n");
159 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
160 size += gd->bd->bi_dram[i].size;
163 print_size(size, "\n");
169 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
170 static int init_func_i2c(void)
173 #ifdef CONFIG_SYS_I2C
176 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
183 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
185 static int arm_pci_init(void)
190 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
193 * Breathe some life into the board...
195 * Initialize a serial port as console, and carry out some hardware
198 * The first part of initialization is running from Flash memory;
199 * its main purpose is to initialize the RAM so that we
200 * can relocate the monitor code to RAM.
204 * All attempts to come up with a "common" initialization sequence
205 * that works for all boards and architectures failed: some of the
206 * requirements are just _too_ different. To get rid of the resulting
207 * mess of board dependent #ifdef'ed code we now make the whole
208 * initialization sequence configurable to the user.
210 * The requirements for any new initalization function is simple: it
211 * receives a pointer to the "global data" structure as it's only
212 * argument, and returns an integer return code, where 0 means
213 * "continue" and != 0 means "fatal error, hang the system".
215 typedef int (init_fnc_t) (void);
217 int print_cpuinfo(void);
219 void __dram_init_banksize(void)
221 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
222 gd->bd->bi_dram[0].size = gd->ram_size;
224 void dram_init_banksize(void)
225 __attribute__((weak, alias("__dram_init_banksize")));
227 int __arch_cpu_init(void)
231 int arch_cpu_init(void)
232 __attribute__((weak, alias("__arch_cpu_init")));
234 int __power_init_board(void)
238 int power_init_board(void)
239 __attribute__((weak, alias("__power_init_board")));
241 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
242 static int mark_bootstage(void)
244 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
249 init_fnc_t *init_sequence[] = {
250 arch_cpu_init, /* basic arch cpu dependent setup */
252 #ifdef CONFIG_OF_CONTROL
255 #if defined(CONFIG_BOARD_EARLY_INIT_F)
258 timer_init, /* initialize timer */
259 #ifdef CONFIG_BOARD_POSTCLK_INIT
262 #ifdef CONFIG_FSL_ESDHC
265 env_init, /* initialize environment */
266 init_baudrate, /* initialze baudrate settings */
267 serial_init, /* serial communications setup */
268 console_init_f, /* stage 1 init of console */
269 display_banner, /* say that we are here */
270 #if defined(CONFIG_DISPLAY_CPUINFO)
271 print_cpuinfo, /* display cpu info (and speed) */
273 #if defined(CONFIG_DISPLAY_BOARDINFO)
274 checkboard, /* display board info */
276 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
279 dram_init, /* configure available RAM banks */
283 void board_init_f(ulong bootflag)
286 init_fnc_t **init_fnc_ptr;
292 void *new_fdt = NULL;
295 memset((void *)gd, 0, sizeof(gd_t));
297 gd->mon_len = _bss_end_ofs;
298 #ifdef CONFIG_OF_EMBED
299 /* Get a pointer to the FDT */
300 gd->fdt_blob = _binary_dt_dtb_start;
301 #elif defined CONFIG_OF_SEPARATE
302 /* FDT is at end of image */
303 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
305 /* Allow the early environment to override the fdt address */
306 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
307 (uintptr_t)gd->fdt_blob);
309 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
310 if ((*init_fnc_ptr)() != 0) {
315 #ifdef CONFIG_OF_CONTROL
316 /* For now, put this check after the console is ready */
317 if (fdtdec_prepare_fdt()) {
318 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
319 "doc/README.fdt-control");
323 debug("monitor len: %08lX\n", gd->mon_len);
325 * Ram is setup, size stored in gd !!
327 debug("ramsize: %08lX\n", gd->ram_size);
328 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
330 * Subtract specified amount of memory to hide so that it won't
331 * get "touched" at all by U-Boot. By fixing up gd->ram_size
332 * the Linux kernel should now get passed the now "corrected"
333 * memory size and won't touch it either. This should work
334 * for arch/ppc and arch/powerpc. Only Linux board ports in
335 * arch/powerpc with bootwrapper support, that recalculate the
336 * memory size from the SDRAM controller setup will have to
339 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
342 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
344 #ifdef CONFIG_LOGBUFFER
345 #ifndef CONFIG_ALT_LB_ADDR
346 /* reserve kernel log buffer */
347 addr -= (LOGBUFF_RESERVE);
348 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
355 * reserve protected RAM
357 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
358 addr -= (reg << 10); /* size is in kB */
359 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
360 #endif /* CONFIG_PRAM */
362 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
363 /* reserve TLB table */
364 gd->arch.tlb_size = 4096 * 4;
365 addr -= gd->arch.tlb_size;
367 /* round down to next 64 kB limit */
368 addr &= ~(0x10000 - 1);
370 gd->arch.tlb_addr = addr;
371 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
374 /* round down to next 4 kB limit */
376 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
379 #ifdef CONFIG_FB_ADDR
380 gd->fb_base = CONFIG_FB_ADDR;
382 /* reserve memory for LCD display (always full pages) */
383 addr = lcd_setmem(addr);
385 #endif /* CONFIG_FB_ADDR */
386 #endif /* CONFIG_LCD */
389 * reserve memory for U-Boot code, data & bss
390 * round down to next 4 kB limit
395 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
397 #ifndef CONFIG_SPL_BUILD
399 * reserve memory for malloc() arena
401 addr_sp = addr - TOTAL_MALLOC_LEN;
402 debug("Reserving %dk for malloc() at: %08lx\n",
403 TOTAL_MALLOC_LEN >> 10, addr_sp);
405 * (permanently) allocate a Board Info struct
406 * and a permanent copy of the "global" data
408 addr_sp -= sizeof (bd_t);
409 bd = (bd_t *) addr_sp;
411 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
412 sizeof (bd_t), addr_sp);
414 #ifdef CONFIG_MACH_TYPE
415 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
418 addr_sp -= sizeof (gd_t);
419 id = (gd_t *) addr_sp;
420 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
421 sizeof (gd_t), addr_sp);
423 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
425 * If the device tree is sitting immediate above our image then we
426 * must relocate it. If it is embedded in the data section, then it
427 * will be relocated with other data.
430 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
433 new_fdt = (void *)addr_sp;
434 debug("Reserving %zu Bytes for FDT at: %08lx\n",
439 /* setup stackpointer for exeptions */
440 gd->irq_sp = addr_sp;
441 #ifdef CONFIG_USE_IRQ
442 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
443 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
444 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
446 /* leave 3 words for abort-stack */
449 /* 8-byte alignment for ABI compliance */
452 addr_sp += 128; /* leave 32 words for abort-stack */
453 gd->irq_sp = addr_sp;
456 debug("New Stack Pointer is: %08lx\n", addr_sp);
459 post_bootmode_init();
460 post_run(NULL, POST_ROM | post_bootmode_get(0));
463 gd->bd->bi_baudrate = gd->baudrate;
464 /* Ram ist board specific, so move it to board code ... */
465 dram_init_banksize();
466 display_dram_config(); /* and display it */
468 gd->relocaddr = addr;
469 gd->start_addr_sp = addr_sp;
470 gd->reloc_off = addr - _TEXT_BASE;
471 debug("relocation Offset is: %08lx\n", gd->reloc_off);
473 memcpy(new_fdt, gd->fdt_blob, fdt_size);
474 gd->fdt_blob = new_fdt;
476 memcpy(id, (void *)gd, sizeof(gd_t));
479 #if !defined(CONFIG_SYS_NO_FLASH)
480 static char *failed = "*** failed ***\n";
484 * Tell if it's OK to load the environment early in boot.
486 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
487 * if this is OK (defaulting to saying it's not OK).
489 * NOTE: Loading the environment early can be a bad idea if security is
490 * important, since no verification is done on the environment.
492 * @return 0 if environment should not be loaded, !=0 if it is ok to load
494 static int should_load_env(void)
496 #ifdef CONFIG_OF_CONTROL
497 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
498 #elif defined CONFIG_DELAY_ENVIRONMENT
505 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
506 static void display_fdt_model(const void *blob)
510 model = (char *)fdt_getprop(blob, 0, "model", NULL);
511 printf("Model: %s\n", model ? model : "<unknown>");
515 /************************************************************************
517 * This is the next part if the initialization sequence: we are now
518 * running from RAM and have a "normal" C environment, i. e. global
519 * data can be written, BSS has been cleared, the stack size in not
520 * that critical any more, etc.
522 ************************************************************************
525 void board_init_r(gd_t *id, ulong dest_addr)
528 #if !defined(CONFIG_SYS_NO_FLASH)
532 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
533 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
535 monitor_flash_len = _end_ofs;
540 debug("monitor flash len: %08lX\n", monitor_flash_len);
541 board_init(); /* Setup chipselects */
543 * TODO: printing of the clock inforamtion of the board is now
544 * implemented as part of bdinfo command. Currently only support for
545 * davinci SOC's is added. Remove this check once all the board
549 set_cpu_clk_info(); /* Setup clock information */
553 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
555 #ifdef CONFIG_LOGBUFFER
559 post_output_backlog();
562 /* The Malloc area is immediately below the monitor copy in DRAM */
563 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
564 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
566 #ifdef CONFIG_ARCH_EARLY_INIT_R
571 #if !defined(CONFIG_SYS_NO_FLASH)
574 flash_size = flash_init();
575 if (flash_size > 0) {
576 # ifdef CONFIG_SYS_FLASH_CHECKSUM
577 print_size(flash_size, "");
579 * Compute and print flash CRC if flashchecksum is set to 'y'
581 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
583 if (getenv_yesno("flashchecksum") == 1) {
584 printf(" CRC: %08X", crc32(0,
585 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
589 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
590 print_size(flash_size, "\n");
591 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
598 #if defined(CONFIG_CMD_NAND)
600 nand_init(); /* go init the NAND */
603 #if defined(CONFIG_CMD_ONENAND)
607 #ifdef CONFIG_GENERIC_MMC
609 mmc_initialize(gd->bd);
612 #ifdef CONFIG_HAS_DATAFLASH
613 AT91F_DataflashInit();
614 dataflash_print_info();
617 /* initialize environment */
618 if (should_load_env())
621 set_default_env(NULL);
623 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
627 stdio_init(); /* get the devices list going. */
631 #if defined(CONFIG_API)
636 console_init_r(); /* fully init console as a device */
638 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
639 # ifdef CONFIG_OF_CONTROL
640 /* Put this here so it appears on the LCD, now it is ready */
641 display_fdt_model(gd->fdt_blob);
647 #if defined(CONFIG_ARCH_MISC_INIT)
648 /* miscellaneous arch dependent initialisations */
651 #if defined(CONFIG_MISC_INIT_R)
652 /* miscellaneous platform dependent initialisations */
656 /* set up exceptions */
658 /* enable exceptions */
661 /* Initialize from environment */
662 load_addr = getenv_ulong("loadaddr", 16, load_addr);
664 #ifdef CONFIG_BOARD_LATE_INIT
668 #ifdef CONFIG_BITBANGMII
671 #if defined(CONFIG_CMD_NET)
673 eth_initialize(gd->bd);
674 #if defined(CONFIG_RESET_PHY_R)
675 debug("Reset Ethernet PHY\n");
681 post_run(NULL, POST_RAM | post_bootmode_get(0));
684 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
686 * Export available size of memory for Linux,
687 * taking into account the protected RAM at top of memory
694 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
696 #ifdef CONFIG_LOGBUFFER
697 #ifndef CONFIG_ALT_LB_ADDR
698 /* Also take the logbuffer into account (pram is in kB) */
699 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
702 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
703 setenv("mem", (char *)memsz);
707 /* main_loop() can return to retry autoboot, if so just run it again. */
712 /* NOTREACHED - no way out of command loop except booting */