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 #if defined(CONFIG_HARD_I2C) || \
77 defined(CONFIG_SOFT_I2C)
81 /************************************************************************
82 * Coloured LED functionality
83 ************************************************************************
84 * May be supplied by boards if desired
86 inline void __coloured_LED_init(void) {}
87 void coloured_LED_init(void)
88 __attribute__((weak, alias("__coloured_LED_init")));
89 inline void __red_led_on(void) {}
90 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
91 inline void __red_led_off(void) {}
92 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
93 inline void __green_led_on(void) {}
94 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
95 inline void __green_led_off(void) {}
96 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
97 inline void __yellow_led_on(void) {}
98 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
99 inline void __yellow_led_off(void) {}
100 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
101 inline void __blue_led_on(void) {}
102 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
103 inline void __blue_led_off(void) {}
104 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
107 ************************************************************************
109 ************************************************************************
110 * Some of this code should be moved into the core functions,
111 * or dropped completely,
112 * but let's get it working (again) first...
115 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
116 #define CONFIG_BAUDRATE 115200
119 static int init_baudrate(void)
121 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
125 static int display_banner(void)
127 printf("\n\n%s\n\n", version_string);
128 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
130 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
131 #ifdef CONFIG_MODEM_SUPPORT
132 debug("Modem Support enabled\n");
134 #ifdef CONFIG_USE_IRQ
135 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
136 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
143 * WARNING: this code looks "cleaner" than the PowerPC version, but
144 * has the disadvantage that you either get nothing, or everything.
145 * On PowerPC, you might see "DRAM: " before the system hangs - which
146 * gives a simple yet clear indication which part of the
147 * initialization if failing.
149 static int display_dram_config(void)
154 puts("RAM Configuration:\n");
156 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
157 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
158 print_size(gd->bd->bi_dram[i].size, "\n");
163 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
164 size += gd->bd->bi_dram[i].size;
167 print_size(size, "\n");
173 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
174 static int init_func_i2c(void)
177 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 init_fnc_t *init_sequence[] = {
228 #if defined(CONFIG_ARCH_CPU_INIT)
229 arch_cpu_init, /* basic arch cpu dependent setup */
231 #if defined(CONFIG_BOARD_EARLY_INIT_F)
234 #ifdef CONFIG_OF_CONTROL
237 timer_init, /* initialize timer */
238 #ifdef CONFIG_FSL_ESDHC
241 env_init, /* initialize environment */
242 init_baudrate, /* initialze baudrate settings */
243 serial_init, /* serial communications setup */
244 console_init_f, /* stage 1 init of console */
245 display_banner, /* say that we are here */
246 #if defined(CONFIG_DISPLAY_CPUINFO)
247 print_cpuinfo, /* display cpu info (and speed) */
249 #if defined(CONFIG_DISPLAY_BOARDINFO)
250 checkboard, /* display board info */
252 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
255 dram_init, /* configure available RAM banks */
259 void board_init_f(ulong bootflag)
262 init_fnc_t **init_fnc_ptr;
269 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
271 /* Pointer is writable since we allocated a register for it */
272 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
273 /* compiler optimization barrier needed for GCC >= 3.4 */
274 __asm__ __volatile__("": : :"memory");
276 memset((void *)gd, 0, sizeof(gd_t));
278 gd->mon_len = _bss_end_ofs;
279 #ifdef CONFIG_OF_EMBED
280 /* Get a pointer to the FDT */
281 gd->fdt_blob = _binary_dt_dtb_start;
282 #elif defined CONFIG_OF_SEPARATE
283 /* FDT is at end of image */
284 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
286 /* Allow the early environment to override the fdt address */
287 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
288 (uintptr_t)gd->fdt_blob);
290 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
291 if ((*init_fnc_ptr)() != 0) {
296 #ifdef CONFIG_OF_CONTROL
297 /* For now, put this check after the console is ready */
298 if (fdtdec_prepare_fdt()) {
299 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
300 "doc/README.fdt-control");
304 debug("monitor len: %08lX\n", gd->mon_len);
306 * Ram is setup, size stored in gd !!
308 debug("ramsize: %08lX\n", gd->ram_size);
309 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
311 * Subtract specified amount of memory to hide so that it won't
312 * get "touched" at all by U-Boot. By fixing up gd->ram_size
313 * the Linux kernel should now get passed the now "corrected"
314 * memory size and won't touch it either. This should work
315 * for arch/ppc and arch/powerpc. Only Linux board ports in
316 * arch/powerpc with bootwrapper support, that recalculate the
317 * memory size from the SDRAM controller setup will have to
320 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
323 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
325 #ifdef CONFIG_LOGBUFFER
326 #ifndef CONFIG_ALT_LB_ADDR
327 /* reserve kernel log buffer */
328 addr -= (LOGBUFF_RESERVE);
329 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
336 * reserve protected RAM
338 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
339 addr -= (reg << 10); /* size is in kB */
340 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
341 #endif /* CONFIG_PRAM */
343 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
344 /* reserve TLB table */
347 /* round down to next 64 kB limit */
348 addr &= ~(0x10000 - 1);
351 debug("TLB table at: %08lx\n", addr);
354 /* round down to next 4 kB limit */
356 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
359 #ifdef CONFIG_FB_ADDR
360 gd->fb_base = CONFIG_FB_ADDR;
362 /* reserve memory for LCD display (always full pages) */
363 addr = lcd_setmem(addr);
365 #endif /* CONFIG_FB_ADDR */
366 #endif /* CONFIG_LCD */
369 * reserve memory for U-Boot code, data & bss
370 * round down to next 4 kB limit
375 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
377 #ifndef CONFIG_SPL_BUILD
379 * reserve memory for malloc() arena
381 addr_sp = addr - TOTAL_MALLOC_LEN;
382 debug("Reserving %dk for malloc() at: %08lx\n",
383 TOTAL_MALLOC_LEN >> 10, addr_sp);
385 * (permanently) allocate a Board Info struct
386 * and a permanent copy of the "global" data
388 addr_sp -= sizeof (bd_t);
389 bd = (bd_t *) addr_sp;
391 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
392 sizeof (bd_t), addr_sp);
394 #ifdef CONFIG_MACH_TYPE
395 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
398 addr_sp -= sizeof (gd_t);
399 id = (gd_t *) addr_sp;
400 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
401 sizeof (gd_t), addr_sp);
403 /* setup stackpointer for exeptions */
404 gd->irq_sp = addr_sp;
405 #ifdef CONFIG_USE_IRQ
406 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
407 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
408 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
410 /* leave 3 words for abort-stack */
413 /* 8-byte alignment for ABI compliance */
416 addr_sp += 128; /* leave 32 words for abort-stack */
417 gd->irq_sp = addr_sp;
420 debug("New Stack Pointer is: %08lx\n", addr_sp);
423 post_bootmode_init();
424 post_run(NULL, POST_ROM | post_bootmode_get(0));
427 gd->bd->bi_baudrate = gd->baudrate;
428 /* Ram ist board specific, so move it to board code ... */
429 dram_init_banksize();
430 display_dram_config(); /* and display it */
432 gd->relocaddr = addr;
433 gd->start_addr_sp = addr_sp;
434 gd->reloc_off = addr - _TEXT_BASE;
435 debug("relocation Offset is: %08lx\n", gd->reloc_off);
436 memcpy(id, (void *)gd, sizeof(gd_t));
438 relocate_code(addr_sp, id, addr);
440 /* NOTREACHED - relocate_code() does not return */
443 #if !defined(CONFIG_SYS_NO_FLASH)
444 static char *failed = "*** failed ***\n";
448 ************************************************************************
450 * This is the next part if the initialization sequence: we are now
451 * running from RAM and have a "normal" C environment, i. e. global
452 * data can be written, BSS has been cleared, the stack size in not
453 * that critical any more, etc.
455 ************************************************************************
458 void board_init_r(gd_t *id, ulong dest_addr)
461 #if !defined(CONFIG_SYS_NO_FLASH)
467 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
468 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
470 monitor_flash_len = _end_ofs;
475 debug("monitor flash len: %08lX\n", monitor_flash_len);
476 board_init(); /* Setup chipselects */
478 * TODO: printing of the clock inforamtion of the board is now
479 * implemented as part of bdinfo command. Currently only support for
480 * davinci SOC's is added. Remove this check once all the board
484 set_cpu_clk_info(); /* Setup clock information */
486 #ifdef CONFIG_SERIAL_MULTI
490 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
492 #ifdef CONFIG_LOGBUFFER
496 post_output_backlog();
499 /* The Malloc area is immediately below the monitor copy in DRAM */
500 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
501 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
503 #if !defined(CONFIG_SYS_NO_FLASH)
506 flash_size = flash_init();
507 if (flash_size > 0) {
508 # ifdef CONFIG_SYS_FLASH_CHECKSUM
509 char *s = getenv("flashchecksum");
511 print_size(flash_size, "");
513 * Compute and print flash CRC if flashchecksum is set to 'y'
515 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
517 if (s && (*s == 'y')) {
518 printf(" CRC: %08X", crc32(0,
519 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
523 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
524 print_size(flash_size, "\n");
525 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
532 #if defined(CONFIG_CMD_NAND)
534 nand_init(); /* go init the NAND */
537 #if defined(CONFIG_CMD_ONENAND)
541 #ifdef CONFIG_GENERIC_MMC
543 mmc_initialize(gd->bd);
546 #ifdef CONFIG_HAS_DATAFLASH
547 AT91F_DataflashInit();
548 dataflash_print_info();
551 /* initialize environment */
554 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
558 stdio_init(); /* get the devices list going. */
562 #if defined(CONFIG_API)
567 console_init_r(); /* fully init console as a device */
569 #if defined(CONFIG_ARCH_MISC_INIT)
570 /* miscellaneous arch dependent initialisations */
573 #if defined(CONFIG_MISC_INIT_R)
574 /* miscellaneous platform dependent initialisations */
578 /* set up exceptions */
580 /* enable exceptions */
583 /* Perform network card initialisation if necessary */
584 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
585 /* XXX: this needs to be moved to board init */
586 if (getenv("ethaddr")) {
588 eth_getenv_enetaddr("ethaddr", enetaddr);
589 smc_set_mac_addr(enetaddr);
591 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
593 /* Initialize from environment */
594 load_addr = getenv_ulong("loadaddr", 16, load_addr);
596 #ifdef CONFIG_BOARD_LATE_INIT
600 #ifdef CONFIG_BITBANGMII
603 #if defined(CONFIG_CMD_NET)
605 eth_initialize(gd->bd);
606 #if defined(CONFIG_RESET_PHY_R)
607 debug("Reset Ethernet PHY\n");
613 post_run(NULL, POST_RAM | post_bootmode_get(0));
616 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
618 * Export available size of memory for Linux,
619 * taking into account the protected RAM at top of memory
626 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
628 #ifdef CONFIG_LOGBUFFER
629 #ifndef CONFIG_ALT_LB_ADDR
630 /* Also take the logbuffer into account (pram is in kB) */
631 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
634 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
635 setenv("mem", (char *)memsz);
639 /* main_loop() can return to retry autoboot, if so just run it again. */
644 /* NOTREACHED - no way out of command loop except booting */
649 puts("### ERROR ### Please RESET the board ###\n");