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 * SPDX-License-Identifier: GPL-2.0+
13 * To match the U-Boot user interface on ARM platforms to the U-Boot
14 * standard (as on PPC platforms), some messages with debug character
15 * are removed from the default U-Boot build.
17 * Define DEBUG here if you want additional info as shown below
18 * printed upon startup:
20 * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
27 #include <environment.h>
29 #include <stdio_dev.h>
34 #include <onenand_uboot.h>
40 #include <asm/sections.h>
42 #ifdef CONFIG_BITBANGMII
46 DECLARE_GLOBAL_DATA_PTR;
48 ulong monitor_flash_len;
50 #ifdef CONFIG_HAS_DATAFLASH
51 extern int AT91F_DataflashInit(void);
52 extern void dataflash_print_info(void);
55 #if defined(CONFIG_HARD_I2C) || \
56 defined(CONFIG_SOFT_I2C)
60 /************************************************************************
61 * Coloured LED functionality
62 ************************************************************************
63 * May be supplied by boards if desired
65 inline void __coloured_LED_init(void) {}
66 void coloured_LED_init(void)
67 __attribute__((weak, alias("__coloured_LED_init")));
68 inline void __red_led_on(void) {}
69 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
70 inline void __red_led_off(void) {}
71 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
72 inline void __green_led_on(void) {}
73 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
74 inline void __green_led_off(void) {}
75 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
76 inline void __yellow_led_on(void) {}
77 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
78 inline void __yellow_led_off(void) {}
79 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
80 inline void __blue_led_on(void) {}
81 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
82 inline void __blue_led_off(void) {}
83 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
86 ************************************************************************
88 ************************************************************************
89 * Some of this code should be moved into the core functions,
90 * or dropped completely,
91 * but let's get it working (again) first...
94 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
95 #define CONFIG_BAUDRATE 115200
98 static int init_baudrate(void)
100 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
104 static int display_banner(void)
106 printf("\n\n%s\n\n", version_string);
107 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
109 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
110 #ifdef CONFIG_MODEM_SUPPORT
111 debug("Modem Support enabled\n");
113 #ifdef CONFIG_USE_IRQ
114 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
115 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
122 * WARNING: this code looks "cleaner" than the PowerPC version, but
123 * has the disadvantage that you either get nothing, or everything.
124 * On PowerPC, you might see "DRAM: " before the system hangs - which
125 * gives a simple yet clear indication which part of the
126 * initialization if failing.
128 static int display_dram_config(void)
133 puts("RAM Configuration:\n");
135 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
136 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
137 print_size(gd->bd->bi_dram[i].size, "\n");
142 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
143 size += gd->bd->bi_dram[i].size;
146 print_size(size, "\n");
152 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
153 static int init_func_i2c(void)
156 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
162 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
164 static int arm_pci_init(void)
169 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
172 * Breathe some life into the board...
174 * Initialize a serial port as console, and carry out some hardware
177 * The first part of initialization is running from Flash memory;
178 * its main purpose is to initialize the RAM so that we
179 * can relocate the monitor code to RAM.
183 * All attempts to come up with a "common" initialization sequence
184 * that works for all boards and architectures failed: some of the
185 * requirements are just _too_ different. To get rid of the resulting
186 * mess of board dependent #ifdef'ed code we now make the whole
187 * initialization sequence configurable to the user.
189 * The requirements for any new initalization function is simple: it
190 * receives a pointer to the "global data" structure as it's only
191 * argument, and returns an integer return code, where 0 means
192 * "continue" and != 0 means "fatal error, hang the system".
194 typedef int (init_fnc_t) (void);
196 int print_cpuinfo(void);
198 void __dram_init_banksize(void)
200 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
201 gd->bd->bi_dram[0].size = gd->ram_size;
203 void dram_init_banksize(void)
204 __attribute__((weak, alias("__dram_init_banksize")));
206 int __arch_cpu_init(void)
210 int arch_cpu_init(void)
211 __attribute__((weak, alias("__arch_cpu_init")));
213 int __power_init_board(void)
217 int power_init_board(void)
218 __attribute__((weak, alias("__power_init_board")));
220 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
221 static int mark_bootstage(void)
223 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
228 init_fnc_t *init_sequence[] = {
229 arch_cpu_init, /* basic arch cpu dependent setup */
231 #ifdef CONFIG_OF_CONTROL
234 #if defined(CONFIG_BOARD_EARLY_INIT_F)
237 timer_init, /* initialize timer */
238 #ifdef CONFIG_BOARD_POSTCLK_INIT
241 #ifdef CONFIG_FSL_ESDHC
244 env_init, /* initialize environment */
245 init_baudrate, /* initialze baudrate settings */
246 serial_init, /* serial communications setup */
247 console_init_f, /* stage 1 init of console */
248 display_banner, /* say that we are here */
249 #if defined(CONFIG_DISPLAY_CPUINFO)
250 print_cpuinfo, /* display cpu info (and speed) */
252 #if defined(CONFIG_DISPLAY_BOARDINFO)
253 checkboard, /* display board info */
255 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
258 dram_init, /* configure available RAM banks */
262 void board_init_f(ulong bootflag)
265 init_fnc_t **init_fnc_ptr;
271 void *new_fdt = NULL;
274 memset((void *)gd, 0, sizeof(gd_t));
276 gd->mon_len = _bss_end_ofs;
277 #ifdef CONFIG_OF_EMBED
278 /* Get a pointer to the FDT */
279 gd->fdt_blob = _binary_dt_dtb_start;
280 #elif defined CONFIG_OF_SEPARATE
281 /* FDT is at end of image */
282 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
284 /* Allow the early environment to override the fdt address */
285 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
286 (uintptr_t)gd->fdt_blob);
288 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
289 if ((*init_fnc_ptr)() != 0) {
294 #ifdef CONFIG_OF_CONTROL
295 /* For now, put this check after the console is ready */
296 if (fdtdec_prepare_fdt()) {
297 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
298 "doc/README.fdt-control");
302 debug("monitor len: %08lX\n", gd->mon_len);
304 * Ram is setup, size stored in gd !!
306 debug("ramsize: %08lX\n", gd->ram_size);
307 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
309 * Subtract specified amount of memory to hide so that it won't
310 * get "touched" at all by U-Boot. By fixing up gd->ram_size
311 * the Linux kernel should now get passed the now "corrected"
312 * memory size and won't touch it either. This should work
313 * for arch/ppc and arch/powerpc. Only Linux board ports in
314 * arch/powerpc with bootwrapper support, that recalculate the
315 * memory size from the SDRAM controller setup will have to
318 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
321 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
323 #ifdef CONFIG_LOGBUFFER
324 #ifndef CONFIG_ALT_LB_ADDR
325 /* reserve kernel log buffer */
326 addr -= (LOGBUFF_RESERVE);
327 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
334 * reserve protected RAM
336 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
337 addr -= (reg << 10); /* size is in kB */
338 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
339 #endif /* CONFIG_PRAM */
341 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
342 /* reserve TLB table */
343 gd->arch.tlb_size = 4096 * 4;
344 addr -= gd->arch.tlb_size;
346 /* round down to next 64 kB limit */
347 addr &= ~(0x10000 - 1);
349 gd->arch.tlb_addr = addr;
350 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
353 /* round down to next 4 kB limit */
355 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
358 #ifdef CONFIG_FB_ADDR
359 gd->fb_base = CONFIG_FB_ADDR;
361 /* reserve memory for LCD display (always full pages) */
362 addr = lcd_setmem(addr);
364 #endif /* CONFIG_FB_ADDR */
365 #endif /* CONFIG_LCD */
368 * reserve memory for U-Boot code, data & bss
369 * round down to next 4 kB limit
374 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
376 #ifndef CONFIG_SPL_BUILD
378 * reserve memory for malloc() arena
380 addr_sp = addr - TOTAL_MALLOC_LEN;
381 debug("Reserving %dk for malloc() at: %08lx\n",
382 TOTAL_MALLOC_LEN >> 10, addr_sp);
384 * (permanently) allocate a Board Info struct
385 * and a permanent copy of the "global" data
387 addr_sp -= sizeof (bd_t);
388 bd = (bd_t *) addr_sp;
390 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
391 sizeof (bd_t), addr_sp);
393 #ifdef CONFIG_MACH_TYPE
394 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
397 addr_sp -= sizeof (gd_t);
398 id = (gd_t *) addr_sp;
399 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
400 sizeof (gd_t), addr_sp);
402 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
404 * If the device tree is sitting immediate above our image then we
405 * must relocate it. If it is embedded in the data section, then it
406 * will be relocated with other data.
409 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
412 new_fdt = (void *)addr_sp;
413 debug("Reserving %zu Bytes for FDT at: %08lx\n",
418 /* setup stackpointer for exeptions */
419 gd->irq_sp = addr_sp;
420 #ifdef CONFIG_USE_IRQ
421 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
422 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
423 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
425 /* leave 3 words for abort-stack */
428 /* 8-byte alignment for ABI compliance */
431 addr_sp += 128; /* leave 32 words for abort-stack */
432 gd->irq_sp = addr_sp;
435 debug("New Stack Pointer is: %08lx\n", addr_sp);
438 post_bootmode_init();
439 post_run(NULL, POST_ROM | post_bootmode_get(0));
442 gd->bd->bi_baudrate = gd->baudrate;
443 /* Ram ist board specific, so move it to board code ... */
444 dram_init_banksize();
445 display_dram_config(); /* and display it */
447 gd->relocaddr = addr;
448 gd->start_addr_sp = addr_sp;
449 gd->reloc_off = addr - _TEXT_BASE;
450 debug("relocation Offset is: %08lx\n", gd->reloc_off);
452 memcpy(new_fdt, gd->fdt_blob, fdt_size);
453 gd->fdt_blob = new_fdt;
455 memcpy(id, (void *)gd, sizeof(gd_t));
458 #if !defined(CONFIG_SYS_NO_FLASH)
459 static char *failed = "*** failed ***\n";
463 * Tell if it's OK to load the environment early in boot.
465 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
466 * if this is OK (defaulting to saying it's not OK).
468 * NOTE: Loading the environment early can be a bad idea if security is
469 * important, since no verification is done on the environment.
471 * @return 0 if environment should not be loaded, !=0 if it is ok to load
473 static int should_load_env(void)
475 #ifdef CONFIG_OF_CONTROL
476 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
477 #elif defined CONFIG_DELAY_ENVIRONMENT
484 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
485 static void display_fdt_model(const void *blob)
489 model = (char *)fdt_getprop(blob, 0, "model", NULL);
490 printf("Model: %s\n", model ? model : "<unknown>");
494 /************************************************************************
496 * This is the next part if the initialization sequence: we are now
497 * running from RAM and have a "normal" C environment, i. e. global
498 * data can be written, BSS has been cleared, the stack size in not
499 * that critical any more, etc.
501 ************************************************************************
504 void board_init_r(gd_t *id, ulong dest_addr)
507 #if !defined(CONFIG_SYS_NO_FLASH)
511 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
512 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
514 monitor_flash_len = _end_ofs;
519 debug("monitor flash len: %08lX\n", monitor_flash_len);
520 board_init(); /* Setup chipselects */
522 * TODO: printing of the clock inforamtion of the board is now
523 * implemented as part of bdinfo command. Currently only support for
524 * davinci SOC's is added. Remove this check once all the board
528 set_cpu_clk_info(); /* Setup clock information */
532 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
534 #ifdef CONFIG_LOGBUFFER
538 post_output_backlog();
541 /* The Malloc area is immediately below the monitor copy in DRAM */
542 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
543 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
545 #ifdef CONFIG_ARCH_EARLY_INIT_R
550 #if !defined(CONFIG_SYS_NO_FLASH)
553 flash_size = flash_init();
554 if (flash_size > 0) {
555 # ifdef CONFIG_SYS_FLASH_CHECKSUM
556 print_size(flash_size, "");
558 * Compute and print flash CRC if flashchecksum is set to 'y'
560 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
562 if (getenv_yesno("flashchecksum") == 1) {
563 printf(" CRC: %08X", crc32(0,
564 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
568 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
569 print_size(flash_size, "\n");
570 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
577 #if defined(CONFIG_CMD_NAND)
579 nand_init(); /* go init the NAND */
582 #if defined(CONFIG_CMD_ONENAND)
586 #ifdef CONFIG_GENERIC_MMC
588 mmc_initialize(gd->bd);
591 #ifdef CONFIG_HAS_DATAFLASH
592 AT91F_DataflashInit();
593 dataflash_print_info();
596 /* initialize environment */
597 if (should_load_env())
600 set_default_env(NULL);
602 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
606 stdio_init(); /* get the devices list going. */
610 #if defined(CONFIG_API)
615 console_init_r(); /* fully init console as a device */
617 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
618 # ifdef CONFIG_OF_CONTROL
619 /* Put this here so it appears on the LCD, now it is ready */
620 display_fdt_model(gd->fdt_blob);
626 #if defined(CONFIG_ARCH_MISC_INIT)
627 /* miscellaneous arch dependent initialisations */
630 #if defined(CONFIG_MISC_INIT_R)
631 /* miscellaneous platform dependent initialisations */
635 /* set up exceptions */
637 /* enable exceptions */
640 /* Initialize from environment */
641 load_addr = getenv_ulong("loadaddr", 16, load_addr);
643 #ifdef CONFIG_BOARD_LATE_INIT
647 #ifdef CONFIG_BITBANGMII
650 #if defined(CONFIG_CMD_NET)
652 eth_initialize(gd->bd);
653 #if defined(CONFIG_RESET_PHY_R)
654 debug("Reset Ethernet PHY\n");
660 post_run(NULL, POST_RAM | post_bootmode_get(0));
663 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
665 * Export available size of memory for Linux,
666 * taking into account the protected RAM at top of memory
673 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
675 #ifdef CONFIG_LOGBUFFER
676 #ifndef CONFIG_ALT_LB_ADDR
677 /* Also take the logbuffer into account (pram is in kB) */
678 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
681 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
682 setenv("mem", (char *)memsz);
686 /* main_loop() can return to retry autoboot, if so just run it again. */
691 /* NOTREACHED - no way out of command loop except booting */