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 DECLARE_GLOBAL_DATA_PTR;
62 ulong monitor_flash_len;
64 #ifdef CONFIG_HAS_DATAFLASH
65 extern int AT91F_DataflashInit(void);
66 extern void dataflash_print_info(void);
69 #if defined(CONFIG_HARD_I2C) || \
70 defined(CONFIG_SOFT_I2C)
74 /************************************************************************
75 * Coloured LED functionality
76 ************************************************************************
77 * May be supplied by boards if desired
79 inline void __coloured_LED_init(void) {}
80 void coloured_LED_init(void)
81 __attribute__((weak, alias("__coloured_LED_init")));
82 inline void __red_led_on(void) {}
83 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
84 inline void __red_led_off(void) {}
85 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
86 inline void __green_led_on(void) {}
87 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
88 inline void __green_led_off(void) {}
89 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
90 inline void __yellow_led_on(void) {}
91 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
92 inline void __yellow_led_off(void) {}
93 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
94 inline void __blue_led_on(void) {}
95 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
96 inline void __blue_led_off(void) {}
97 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
100 ************************************************************************
102 ************************************************************************
103 * Some of this code should be moved into the core functions,
104 * or dropped completely,
105 * but let's get it working (again) first...
108 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
109 #define CONFIG_BAUDRATE 115200
112 static int init_baudrate(void)
114 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
118 static int display_banner(void)
120 printf("\n\n%s\n\n", version_string);
121 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
123 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
124 #ifdef CONFIG_MODEM_SUPPORT
125 debug("Modem Support enabled\n");
127 #ifdef CONFIG_USE_IRQ
128 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
129 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
136 * WARNING: this code looks "cleaner" than the PowerPC version, but
137 * has the disadvantage that you either get nothing, or everything.
138 * On PowerPC, you might see "DRAM: " before the system hangs - which
139 * gives a simple yet clear indication which part of the
140 * initialization if failing.
142 static int display_dram_config(void)
147 puts("RAM Configuration:\n");
149 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
150 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
151 print_size(gd->bd->bi_dram[i].size, "\n");
156 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
157 size += gd->bd->bi_dram[i].size;
160 print_size(size, "\n");
166 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
167 static int init_func_i2c(void)
170 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
176 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
178 static int arm_pci_init(void)
183 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
186 * Breathe some life into the board...
188 * Initialize a serial port as console, and carry out some hardware
191 * The first part of initialization is running from Flash memory;
192 * its main purpose is to initialize the RAM so that we
193 * can relocate the monitor code to RAM.
197 * All attempts to come up with a "common" initialization sequence
198 * that works for all boards and architectures failed: some of the
199 * requirements are just _too_ different. To get rid of the resulting
200 * mess of board dependent #ifdef'ed code we now make the whole
201 * initialization sequence configurable to the user.
203 * The requirements for any new initalization function is simple: it
204 * receives a pointer to the "global data" structure as it's only
205 * argument, and returns an integer return code, where 0 means
206 * "continue" and != 0 means "fatal error, hang the system".
208 typedef int (init_fnc_t) (void);
210 int print_cpuinfo(void);
212 void __dram_init_banksize(void)
214 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
215 gd->bd->bi_dram[0].size = gd->ram_size;
217 void dram_init_banksize(void)
218 __attribute__((weak, alias("__dram_init_banksize")));
220 int __arch_cpu_init(void)
224 int arch_cpu_init(void)
225 __attribute__((weak, alias("__arch_cpu_init")));
227 init_fnc_t *init_sequence[] = {
228 arch_cpu_init, /* basic arch cpu dependent setup */
230 #if defined(CONFIG_BOARD_EARLY_INIT_F)
233 #ifdef CONFIG_OF_CONTROL
236 timer_init, /* initialize timer */
237 #ifdef CONFIG_BOARD_POSTCLK_INIT
240 #ifdef CONFIG_FSL_ESDHC
243 env_init, /* initialize environment */
244 init_baudrate, /* initialze baudrate settings */
245 serial_init, /* serial communications setup */
246 console_init_f, /* stage 1 init of console */
247 display_banner, /* say that we are here */
248 #if defined(CONFIG_DISPLAY_CPUINFO)
249 print_cpuinfo, /* display cpu info (and speed) */
251 #if defined(CONFIG_DISPLAY_BOARDINFO)
252 checkboard, /* display board info */
254 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
257 dram_init, /* configure available RAM banks */
261 void board_init_f(ulong bootflag)
264 init_fnc_t **init_fnc_ptr;
270 void *new_fdt = NULL;
273 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
275 /* Pointer is writable since we allocated a register for it */
276 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
277 /* compiler optimization barrier needed for GCC >= 3.4 */
278 __asm__ __volatile__("": : :"memory");
280 memset((void *)gd, 0, sizeof(gd_t));
282 gd->mon_len = _bss_end_ofs;
283 #ifdef CONFIG_OF_EMBED
284 /* Get a pointer to the FDT */
285 gd->fdt_blob = _binary_dt_dtb_start;
286 #elif defined CONFIG_OF_SEPARATE
287 /* FDT is at end of image */
288 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
290 /* Allow the early environment to override the fdt address */
291 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
292 (uintptr_t)gd->fdt_blob);
294 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
295 if ((*init_fnc_ptr)() != 0) {
300 #ifdef CONFIG_OF_CONTROL
301 /* For now, put this check after the console is ready */
302 if (fdtdec_prepare_fdt()) {
303 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
304 "doc/README.fdt-control");
308 debug("monitor len: %08lX\n", gd->mon_len);
310 * Ram is setup, size stored in gd !!
312 debug("ramsize: %08lX\n", gd->ram_size);
313 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
315 * Subtract specified amount of memory to hide so that it won't
316 * get "touched" at all by U-Boot. By fixing up gd->ram_size
317 * the Linux kernel should now get passed the now "corrected"
318 * memory size and won't touch it either. This should work
319 * for arch/ppc and arch/powerpc. Only Linux board ports in
320 * arch/powerpc with bootwrapper support, that recalculate the
321 * memory size from the SDRAM controller setup will have to
324 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
327 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
329 #ifdef CONFIG_LOGBUFFER
330 #ifndef CONFIG_ALT_LB_ADDR
331 /* reserve kernel log buffer */
332 addr -= (LOGBUFF_RESERVE);
333 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
340 * reserve protected RAM
342 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
343 addr -= (reg << 10); /* size is in kB */
344 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
345 #endif /* CONFIG_PRAM */
347 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
348 /* reserve TLB table */
351 /* round down to next 64 kB limit */
352 addr &= ~(0x10000 - 1);
355 debug("TLB table at: %08lx\n", addr);
358 /* round down to next 4 kB limit */
360 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
363 #ifdef CONFIG_FB_ADDR
364 gd->fb_base = CONFIG_FB_ADDR;
366 /* reserve memory for LCD display (always full pages) */
367 addr = lcd_setmem(addr);
369 #endif /* CONFIG_FB_ADDR */
370 #endif /* CONFIG_LCD */
373 * reserve memory for U-Boot code, data & bss
374 * round down to next 4 kB limit
379 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
381 #ifndef CONFIG_SPL_BUILD
383 * reserve memory for malloc() arena
385 addr_sp = addr - TOTAL_MALLOC_LEN;
386 debug("Reserving %dk for malloc() at: %08lx\n",
387 TOTAL_MALLOC_LEN >> 10, addr_sp);
389 * (permanently) allocate a Board Info struct
390 * and a permanent copy of the "global" data
392 addr_sp -= sizeof (bd_t);
393 bd = (bd_t *) addr_sp;
395 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
396 sizeof (bd_t), addr_sp);
398 #ifdef CONFIG_MACH_TYPE
399 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
402 addr_sp -= sizeof (gd_t);
403 id = (gd_t *) addr_sp;
404 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
405 sizeof (gd_t), addr_sp);
407 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
409 * If the device tree is sitting immediate above our image then we
410 * must relocate it. If it is embedded in the data section, then it
411 * will be relocated with other data.
414 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
417 new_fdt = (void *)addr_sp;
418 debug("Reserving %zu Bytes for FDT at: %08lx\n",
423 /* setup stackpointer for exeptions */
424 gd->irq_sp = addr_sp;
425 #ifdef CONFIG_USE_IRQ
426 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
427 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
428 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
430 /* leave 3 words for abort-stack */
433 /* 8-byte alignment for ABI compliance */
436 addr_sp += 128; /* leave 32 words for abort-stack */
437 gd->irq_sp = addr_sp;
440 debug("New Stack Pointer is: %08lx\n", addr_sp);
443 post_bootmode_init();
444 post_run(NULL, POST_ROM | post_bootmode_get(0));
447 gd->bd->bi_baudrate = gd->baudrate;
448 /* Ram ist board specific, so move it to board code ... */
449 dram_init_banksize();
450 display_dram_config(); /* and display it */
452 gd->relocaddr = addr;
453 gd->start_addr_sp = addr_sp;
454 gd->reloc_off = addr - _TEXT_BASE;
455 debug("relocation Offset is: %08lx\n", gd->reloc_off);
457 memcpy(new_fdt, gd->fdt_blob, fdt_size);
458 gd->fdt_blob = new_fdt;
460 memcpy(id, (void *)gd, sizeof(gd_t));
462 relocate_code(addr_sp, id, addr);
464 /* NOTREACHED - relocate_code() does not return */
467 #if !defined(CONFIG_SYS_NO_FLASH)
468 static char *failed = "*** failed ***\n";
472 ************************************************************************
474 * This is the next part if the initialization sequence: we are now
475 * running from RAM and have a "normal" C environment, i. e. global
476 * data can be written, BSS has been cleared, the stack size in not
477 * that critical any more, etc.
479 ************************************************************************
482 void board_init_r(gd_t *id, ulong dest_addr)
485 #if !defined(CONFIG_SYS_NO_FLASH)
491 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
492 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
494 monitor_flash_len = _end_ofs;
499 debug("monitor flash len: %08lX\n", monitor_flash_len);
500 board_init(); /* Setup chipselects */
502 * TODO: printing of the clock inforamtion of the board is now
503 * implemented as part of bdinfo command. Currently only support for
504 * davinci SOC's is added. Remove this check once all the board
508 set_cpu_clk_info(); /* Setup clock information */
512 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
514 #ifdef CONFIG_LOGBUFFER
518 post_output_backlog();
521 /* The Malloc area is immediately below the monitor copy in DRAM */
522 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
523 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
525 #ifdef CONFIG_ARCH_EARLY_INIT_R
529 #if !defined(CONFIG_SYS_NO_FLASH)
532 flash_size = flash_init();
533 if (flash_size > 0) {
534 # ifdef CONFIG_SYS_FLASH_CHECKSUM
535 char *s = getenv("flashchecksum");
537 print_size(flash_size, "");
539 * Compute and print flash CRC if flashchecksum is set to 'y'
541 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
543 if (s && (*s == 'y')) {
544 printf(" CRC: %08X", crc32(0,
545 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
549 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
550 print_size(flash_size, "\n");
551 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
558 #if defined(CONFIG_CMD_NAND)
560 nand_init(); /* go init the NAND */
563 #if defined(CONFIG_CMD_ONENAND)
567 #ifdef CONFIG_GENERIC_MMC
569 mmc_initialize(gd->bd);
572 #ifdef CONFIG_HAS_DATAFLASH
573 AT91F_DataflashInit();
574 dataflash_print_info();
577 /* initialize environment */
580 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
584 stdio_init(); /* get the devices list going. */
588 #if defined(CONFIG_API)
593 console_init_r(); /* fully init console as a device */
595 #if defined(CONFIG_ARCH_MISC_INIT)
596 /* miscellaneous arch dependent initialisations */
599 #if defined(CONFIG_MISC_INIT_R)
600 /* miscellaneous platform dependent initialisations */
604 /* set up exceptions */
606 /* enable exceptions */
609 /* Initialize from environment */
610 load_addr = getenv_ulong("loadaddr", 16, load_addr);
612 #ifdef CONFIG_BOARD_LATE_INIT
616 #ifdef CONFIG_BITBANGMII
619 #if defined(CONFIG_CMD_NET)
621 eth_initialize(gd->bd);
622 #if defined(CONFIG_RESET_PHY_R)
623 debug("Reset Ethernet PHY\n");
629 post_run(NULL, POST_RAM | post_bootmode_get(0));
632 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
634 * Export available size of memory for Linux,
635 * taking into account the protected RAM at top of memory
642 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
644 #ifdef CONFIG_LOGBUFFER
645 #ifndef CONFIG_ALT_LB_ADDR
646 /* Also take the logbuffer into account (pram is in kB) */
647 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
650 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
651 setenv("mem", (char *)memsz);
655 /* main_loop() can return to retry autoboot, if so just run it again. */
660 /* NOTREACHED - no way out of command loop except booting */
665 puts("### ERROR ### Please RESET the board ###\n");