1 /*
2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2002
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
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.
16 *
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.
21 *
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,
25 * MA 02111-1307 USA
26 */
28 /*
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.
32 *
33 * Define DEBUG here if you want additional info as shown below
34 * printed upon startup:
35 *
36 * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
37 * IRQ Stack: 00ebff7c
38 * FIQ Stack: 00ebef7c
39 */
41 #include <common.h>
42 #include <command.h>
43 #include <malloc.h>
44 #include <stdio_dev.h>
45 #include <version.h>
46 #include <net.h>
47 #include <serial.h>
48 #include <nand.h>
49 #include <onenand_uboot.h>
50 #include <mmc.h>
51 #include <libfdt.h>
52 #include <fdtdec.h>
53 #include <post.h>
54 #include <logbuff.h>
56 #ifdef CONFIG_BITBANGMII
57 #include <miiphy.h>
58 #endif
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);
67 #endif
69 #if defined(CONFIG_HARD_I2C) || \
70 defined(CONFIG_SOFT_I2C)
71 #include <i2c.h>
72 #endif
74 /************************************************************************
75 * Coloured LED functionality
76 ************************************************************************
77 * May be supplied by boards if desired
78 */
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")));
99 /*
100 ************************************************************************
101 * Init Utilities *
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...
106 */
108 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
109 #define CONFIG_BAUDRATE 115200
110 #endif
112 static int init_baudrate(void)
113 {
114 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
115 return 0;
116 }
118 static int display_banner(void)
119 {
120 printf("\n\n%s\n\n", version_string);
121 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
122 _TEXT_BASE,
123 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
124 #ifdef CONFIG_MODEM_SUPPORT
125 debug("Modem Support enabled\n");
126 #endif
127 #ifdef CONFIG_USE_IRQ
128 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
129 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
130 #endif
132 return (0);
133 }
135 /*
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.
141 */
142 static int display_dram_config(void)
143 {
144 int i;
146 #ifdef DEBUG
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");
152 }
153 #else
154 ulong size = 0;
156 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
157 size += gd->bd->bi_dram[i].size;
159 puts("DRAM: ");
160 print_size(size, "\n");
161 #endif
163 return (0);
164 }
166 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
167 static int init_func_i2c(void)
168 {
169 puts("I2C: ");
170 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
171 puts("ready\n");
172 return (0);
173 }
174 #endif
176 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
177 #include <pci.h>
178 static int arm_pci_init(void)
179 {
180 pci_init();
181 return 0;
182 }
183 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
185 /*
186 * Breathe some life into the board...
187 *
188 * Initialize a serial port as console, and carry out some hardware
189 * tests.
190 *
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.
194 */
196 /*
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.
202 *
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".
207 */
208 typedef int (init_fnc_t) (void);
210 int print_cpuinfo(void);
212 void __dram_init_banksize(void)
213 {
214 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
215 gd->bd->bi_dram[0].size = gd->ram_size;
216 }
217 void dram_init_banksize(void)
218 __attribute__((weak, alias("__dram_init_banksize")));
220 int __arch_cpu_init(void)
221 {
222 return 0;
223 }
224 int arch_cpu_init(void)
225 __attribute__((weak, alias("__arch_cpu_init")));
227 int __power_init_board(void)
228 {
229 return 0;
230 }
231 int power_init_board(void)
232 __attribute__((weak, alias("__power_init_board")));
234 init_fnc_t *init_sequence[] = {
235 arch_cpu_init, /* basic arch cpu dependent setup */
237 #if defined(CONFIG_BOARD_EARLY_INIT_F)
238 board_early_init_f,
239 #endif
240 #ifdef CONFIG_OF_CONTROL
241 fdtdec_check_fdt,
242 #endif
243 timer_init, /* initialize timer */
244 #ifdef CONFIG_BOARD_POSTCLK_INIT
245 board_postclk_init,
246 #endif
247 #ifdef CONFIG_FSL_ESDHC
248 get_clocks,
249 #endif
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) */
257 #endif
258 #if defined(CONFIG_DISPLAY_BOARDINFO)
259 checkboard, /* display board info */
260 #endif
261 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
262 init_func_i2c,
263 #endif
264 dram_init, /* configure available RAM banks */
265 NULL,
266 };
268 void board_init_f(ulong bootflag)
269 {
270 bd_t *bd;
271 init_fnc_t **init_fnc_ptr;
272 gd_t *id;
273 ulong addr, addr_sp;
274 #ifdef CONFIG_PRAM
275 ulong reg;
276 #endif
277 void *new_fdt = NULL;
278 size_t fdt_size = 0;
280 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
282 /* Pointer is writable since we allocated a register for it */
283 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
284 /* compiler optimization barrier needed for GCC >= 3.4 */
285 __asm__ __volatile__("": : :"memory");
287 memset((void *)gd, 0, sizeof(gd_t));
289 gd->mon_len = _bss_end_ofs;
290 #ifdef CONFIG_OF_EMBED
291 /* Get a pointer to the FDT */
292 gd->fdt_blob = _binary_dt_dtb_start;
293 #elif defined CONFIG_OF_SEPARATE
294 /* FDT is at end of image */
295 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
296 #endif
297 /* Allow the early environment to override the fdt address */
298 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
299 (uintptr_t)gd->fdt_blob);
301 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
302 if ((*init_fnc_ptr)() != 0) {
303 hang ();
304 }
305 }
307 #ifdef CONFIG_OF_CONTROL
308 /* For now, put this check after the console is ready */
309 if (fdtdec_prepare_fdt()) {
310 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
311 "doc/README.fdt-control");
312 }
313 #endif
315 debug("monitor len: %08lX\n", gd->mon_len);
316 /*
317 * Ram is setup, size stored in gd !!
318 */
319 debug("ramsize: %08lX\n", gd->ram_size);
320 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
321 /*
322 * Subtract specified amount of memory to hide so that it won't
323 * get "touched" at all by U-Boot. By fixing up gd->ram_size
324 * the Linux kernel should now get passed the now "corrected"
325 * memory size and won't touch it either. This should work
326 * for arch/ppc and arch/powerpc. Only Linux board ports in
327 * arch/powerpc with bootwrapper support, that recalculate the
328 * memory size from the SDRAM controller setup will have to
329 * get fixed.
330 */
331 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
332 #endif
334 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
336 #ifdef CONFIG_LOGBUFFER
337 #ifndef CONFIG_ALT_LB_ADDR
338 /* reserve kernel log buffer */
339 addr -= (LOGBUFF_RESERVE);
340 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
341 addr);
342 #endif
343 #endif
345 #ifdef CONFIG_PRAM
346 /*
347 * reserve protected RAM
348 */
349 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
350 addr -= (reg << 10); /* size is in kB */
351 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
352 #endif /* CONFIG_PRAM */
354 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
355 /* reserve TLB table */
356 addr -= (4096 * 4);
358 /* round down to next 64 kB limit */
359 addr &= ~(0x10000 - 1);
361 gd->tlb_addr = addr;
362 debug("TLB table at: %08lx\n", addr);
363 #endif
365 /* round down to next 4 kB limit */
366 addr &= ~(4096 - 1);
367 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
369 #ifdef CONFIG_LCD
370 #ifdef CONFIG_FB_ADDR
371 gd->fb_base = CONFIG_FB_ADDR;
372 #else
373 /* reserve memory for LCD display (always full pages) */
374 addr = lcd_setmem(addr);
375 gd->fb_base = addr;
376 #endif /* CONFIG_FB_ADDR */
377 #endif /* CONFIG_LCD */
379 /*
380 * reserve memory for U-Boot code, data & bss
381 * round down to next 4 kB limit
382 */
383 addr -= gd->mon_len;
384 addr &= ~(4096 - 1);
386 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
388 #ifndef CONFIG_SPL_BUILD
389 /*
390 * reserve memory for malloc() arena
391 */
392 addr_sp = addr - TOTAL_MALLOC_LEN;
393 debug("Reserving %dk for malloc() at: %08lx\n",
394 TOTAL_MALLOC_LEN >> 10, addr_sp);
395 /*
396 * (permanently) allocate a Board Info struct
397 * and a permanent copy of the "global" data
398 */
399 addr_sp -= sizeof (bd_t);
400 bd = (bd_t *) addr_sp;
401 gd->bd = bd;
402 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
403 sizeof (bd_t), addr_sp);
405 #ifdef CONFIG_MACH_TYPE
406 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
407 #endif
409 addr_sp -= sizeof (gd_t);
410 id = (gd_t *) addr_sp;
411 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
412 sizeof (gd_t), addr_sp);
414 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
415 /*
416 * If the device tree is sitting immediate above our image then we
417 * must relocate it. If it is embedded in the data section, then it
418 * will be relocated with other data.
419 */
420 if (gd->fdt_blob) {
421 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
423 addr_sp -= fdt_size;
424 new_fdt = (void *)addr_sp;
425 debug("Reserving %zu Bytes for FDT at: %08lx\n",
426 fdt_size, addr_sp);
427 }
428 #endif
430 /* setup stackpointer for exeptions */
431 gd->irq_sp = addr_sp;
432 #ifdef CONFIG_USE_IRQ
433 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
434 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
435 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
436 #endif
437 /* leave 3 words for abort-stack */
438 addr_sp -= 12;
440 /* 8-byte alignment for ABI compliance */
441 addr_sp &= ~0x07;
442 #else
443 addr_sp += 128; /* leave 32 words for abort-stack */
444 gd->irq_sp = addr_sp;
445 #endif
447 debug("New Stack Pointer is: %08lx\n", addr_sp);
449 #ifdef CONFIG_POST
450 post_bootmode_init();
451 post_run(NULL, POST_ROM | post_bootmode_get(0));
452 #endif
454 gd->bd->bi_baudrate = gd->baudrate;
455 /* Ram ist board specific, so move it to board code ... */
456 dram_init_banksize();
457 display_dram_config(); /* and display it */
459 gd->relocaddr = addr;
460 gd->start_addr_sp = addr_sp;
461 gd->reloc_off = addr - _TEXT_BASE;
462 debug("relocation Offset is: %08lx\n", gd->reloc_off);
463 if (new_fdt) {
464 memcpy(new_fdt, gd->fdt_blob, fdt_size);
465 gd->fdt_blob = new_fdt;
466 }
467 memcpy(id, (void *)gd, sizeof(gd_t));
469 relocate_code(addr_sp, id, addr);
471 /* NOTREACHED - relocate_code() does not return */
472 }
474 #if !defined(CONFIG_SYS_NO_FLASH)
475 static char *failed = "*** failed ***\n";
476 #endif
478 /*
479 ************************************************************************
480 *
481 * This is the next part if the initialization sequence: we are now
482 * running from RAM and have a "normal" C environment, i. e. global
483 * data can be written, BSS has been cleared, the stack size in not
484 * that critical any more, etc.
485 *
486 ************************************************************************
487 */
489 void board_init_r(gd_t *id, ulong dest_addr)
490 {
491 ulong malloc_start;
492 #if !defined(CONFIG_SYS_NO_FLASH)
493 ulong flash_size;
494 #endif
496 gd = id;
498 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
499 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
501 monitor_flash_len = _end_ofs;
503 /* Enable caches */
504 enable_caches();
506 debug("monitor flash len: %08lX\n", monitor_flash_len);
507 board_init(); /* Setup chipselects */
508 /*
509 * TODO: printing of the clock inforamtion of the board is now
510 * implemented as part of bdinfo command. Currently only support for
511 * davinci SOC's is added. Remove this check once all the board
512 * implement this.
513 */
514 #ifdef CONFIG_CLOCKS
515 set_cpu_clk_info(); /* Setup clock information */
516 #endif
517 serial_initialize();
519 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
521 #ifdef CONFIG_LOGBUFFER
522 logbuff_init_ptrs();
523 #endif
524 #ifdef CONFIG_POST
525 post_output_backlog();
526 #endif
528 /* The Malloc area is immediately below the monitor copy in DRAM */
529 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
530 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
532 #ifdef CONFIG_ARCH_EARLY_INIT_R
533 arch_early_init_r();
534 #endif
535 power_init_board();
537 #if !defined(CONFIG_SYS_NO_FLASH)
538 puts("Flash: ");
540 flash_size = flash_init();
541 if (flash_size > 0) {
542 # ifdef CONFIG_SYS_FLASH_CHECKSUM
543 char *s = getenv("flashchecksum");
545 print_size(flash_size, "");
546 /*
547 * Compute and print flash CRC if flashchecksum is set to 'y'
548 *
549 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
550 */
551 if (s && (*s == 'y')) {
552 printf(" CRC: %08X", crc32(0,
553 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
554 flash_size));
555 }
556 putc('\n');
557 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
558 print_size(flash_size, "\n");
559 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
560 } else {
561 puts(failed);
562 hang();
563 }
564 #endif
566 #if defined(CONFIG_CMD_NAND)
567 puts("NAND: ");
568 nand_init(); /* go init the NAND */
569 #endif
571 #if defined(CONFIG_CMD_ONENAND)
572 onenand_init();
573 #endif
575 #ifdef CONFIG_GENERIC_MMC
576 puts("MMC: ");
577 mmc_initialize(gd->bd);
578 #endif
580 #ifdef CONFIG_HAS_DATAFLASH
581 AT91F_DataflashInit();
582 dataflash_print_info();
583 #endif
585 /* initialize environment */
586 env_relocate();
588 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
589 arm_pci_init();
590 #endif
592 stdio_init(); /* get the devices list going. */
594 jumptable_init();
596 #if defined(CONFIG_API)
597 /* Initialize API */
598 api_init();
599 #endif
601 console_init_r(); /* fully init console as a device */
603 #if defined(CONFIG_ARCH_MISC_INIT)
604 /* miscellaneous arch dependent initialisations */
605 arch_misc_init();
606 #endif
607 #if defined(CONFIG_MISC_INIT_R)
608 /* miscellaneous platform dependent initialisations */
609 misc_init_r();
610 #endif
612 /* set up exceptions */
613 interrupt_init();
614 /* enable exceptions */
615 enable_interrupts();
617 /* Initialize from environment */
618 load_addr = getenv_ulong("loadaddr", 16, load_addr);
620 #ifdef CONFIG_BOARD_LATE_INIT
621 board_late_init();
622 #endif
624 #ifdef CONFIG_BITBANGMII
625 bb_miiphy_init();
626 #endif
627 #if defined(CONFIG_CMD_NET)
628 puts("Net: ");
629 eth_initialize(gd->bd);
630 #if defined(CONFIG_RESET_PHY_R)
631 debug("Reset Ethernet PHY\n");
632 reset_phy();
633 #endif
634 #endif
636 #ifdef CONFIG_POST
637 post_run(NULL, POST_RAM | post_bootmode_get(0));
638 #endif
640 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
641 /*
642 * Export available size of memory for Linux,
643 * taking into account the protected RAM at top of memory
644 */
645 {
646 ulong pram = 0;
647 uchar memsz[32];
649 #ifdef CONFIG_PRAM
650 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
651 #endif
652 #ifdef CONFIG_LOGBUFFER
653 #ifndef CONFIG_ALT_LB_ADDR
654 /* Also take the logbuffer into account (pram is in kB) */
655 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
656 #endif
657 #endif
658 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
659 setenv("mem", (char *)memsz);
660 }
661 #endif
663 /* main_loop() can return to retry autoboot, if so just run it again. */
664 for (;;) {
665 main_loop();
666 }
668 /* NOTREACHED - no way out of command loop except booting */
669 }
671 void hang(void)
672 {
673 puts("### ERROR ### Please RESET the board ###\n");
674 for (;;);
675 }