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_SYS_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_SYS_I2C)
153 static int init_func_i2c(void)
156 #ifdef CONFIG_SYS_I2C
159 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
166 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
168 static int arm_pci_init(void)
173 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
176 * Breathe some life into the board...
178 * Initialize a serial port as console, and carry out some hardware
181 * The first part of initialization is running from Flash memory;
182 * its main purpose is to initialize the RAM so that we
183 * can relocate the monitor code to RAM.
187 * All attempts to come up with a "common" initialization sequence
188 * that works for all boards and architectures failed: some of the
189 * requirements are just _too_ different. To get rid of the resulting
190 * mess of board dependent #ifdef'ed code we now make the whole
191 * initialization sequence configurable to the user.
193 * The requirements for any new initalization function is simple: it
194 * receives a pointer to the "global data" structure as it's only
195 * argument, and returns an integer return code, where 0 means
196 * "continue" and != 0 means "fatal error, hang the system".
198 typedef int (init_fnc_t) (void);
200 int print_cpuinfo(void);
202 void __dram_init_banksize(void)
204 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
205 gd->bd->bi_dram[0].size = gd->ram_size;
207 void dram_init_banksize(void)
208 __attribute__((weak, alias("__dram_init_banksize")));
210 int __arch_cpu_init(void)
214 int arch_cpu_init(void)
215 __attribute__((weak, alias("__arch_cpu_init")));
217 int __power_init_board(void)
221 int power_init_board(void)
222 __attribute__((weak, alias("__power_init_board")));
224 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
225 static int mark_bootstage(void)
227 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
232 init_fnc_t *init_sequence[] = {
233 arch_cpu_init, /* basic arch cpu dependent setup */
235 #ifdef CONFIG_OF_CONTROL
238 #if defined(CONFIG_BOARD_EARLY_INIT_F)
241 timer_init, /* initialize timer */
242 #ifdef CONFIG_BOARD_POSTCLK_INIT
245 #ifdef CONFIG_FSL_ESDHC
248 env_init, /* initialize environment */
249 init_baudrate, /* initialze baudrate settings */
250 serial_init, /* serial communications setup */
251 console_init_f, /* stage 1 init of console */
252 display_banner, /* say that we are here */
253 #if defined(CONFIG_DISPLAY_CPUINFO)
254 print_cpuinfo, /* display cpu info (and speed) */
256 #if defined(CONFIG_DISPLAY_BOARDINFO)
257 checkboard, /* display board info */
259 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
262 dram_init, /* configure available RAM banks */
266 void board_init_f(ulong bootflag)
269 init_fnc_t **init_fnc_ptr;
275 void *new_fdt = NULL;
278 memset((void *)gd, 0, sizeof(gd_t));
280 gd->mon_len = _bss_end_ofs;
281 #ifdef CONFIG_OF_EMBED
282 /* Get a pointer to the FDT */
283 gd->fdt_blob = _binary_dt_dtb_start;
284 #elif defined CONFIG_OF_SEPARATE
285 /* FDT is at end of image */
286 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
288 /* Allow the early environment to override the fdt address */
289 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
290 (uintptr_t)gd->fdt_blob);
292 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
293 if ((*init_fnc_ptr)() != 0) {
298 #ifdef CONFIG_OF_CONTROL
299 /* For now, put this check after the console is ready */
300 if (fdtdec_prepare_fdt()) {
301 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
302 "doc/README.fdt-control");
306 debug("monitor len: %08lX\n", gd->mon_len);
308 * Ram is setup, size stored in gd !!
310 debug("ramsize: %08lX\n", gd->ram_size);
311 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
313 * Subtract specified amount of memory to hide so that it won't
314 * get "touched" at all by U-Boot. By fixing up gd->ram_size
315 * the Linux kernel should now get passed the now "corrected"
316 * memory size and won't touch it either. This should work
317 * for arch/ppc and arch/powerpc. Only Linux board ports in
318 * arch/powerpc with bootwrapper support, that recalculate the
319 * memory size from the SDRAM controller setup will have to
322 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
325 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
327 #ifdef CONFIG_LOGBUFFER
328 #ifndef CONFIG_ALT_LB_ADDR
329 /* reserve kernel log buffer */
330 addr -= (LOGBUFF_RESERVE);
331 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
338 * reserve protected RAM
340 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
341 addr -= (reg << 10); /* size is in kB */
342 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
343 #endif /* CONFIG_PRAM */
345 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
346 /* reserve TLB table */
347 gd->arch.tlb_size = 4096 * 4;
348 addr -= gd->arch.tlb_size;
350 /* round down to next 64 kB limit */
351 addr &= ~(0x10000 - 1);
353 gd->arch.tlb_addr = addr;
354 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
357 /* round down to next 4 kB limit */
359 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
362 #ifdef CONFIG_FB_ADDR
363 gd->fb_base = CONFIG_FB_ADDR;
365 /* reserve memory for LCD display (always full pages) */
366 addr = lcd_setmem(addr);
368 #endif /* CONFIG_FB_ADDR */
369 #endif /* CONFIG_LCD */
372 * reserve memory for U-Boot code, data & bss
373 * round down to next 4 kB limit
378 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
380 #ifndef CONFIG_SPL_BUILD
382 * reserve memory for malloc() arena
384 addr_sp = addr - TOTAL_MALLOC_LEN;
385 debug("Reserving %dk for malloc() at: %08lx\n",
386 TOTAL_MALLOC_LEN >> 10, addr_sp);
388 * (permanently) allocate a Board Info struct
389 * and a permanent copy of the "global" data
391 addr_sp -= sizeof (bd_t);
392 bd = (bd_t *) addr_sp;
394 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
395 sizeof (bd_t), addr_sp);
397 #ifdef CONFIG_MACH_TYPE
398 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
401 addr_sp -= sizeof (gd_t);
402 id = (gd_t *) addr_sp;
403 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
404 sizeof (gd_t), addr_sp);
406 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
408 * If the device tree is sitting immediate above our image then we
409 * must relocate it. If it is embedded in the data section, then it
410 * will be relocated with other data.
413 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
416 new_fdt = (void *)addr_sp;
417 debug("Reserving %zu Bytes for FDT at: %08lx\n",
422 /* setup stackpointer for exeptions */
423 gd->irq_sp = addr_sp;
424 #ifdef CONFIG_USE_IRQ
425 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
426 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
427 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
429 /* leave 3 words for abort-stack */
432 /* 8-byte alignment for ABI compliance */
435 addr_sp += 128; /* leave 32 words for abort-stack */
436 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));
463 #if !defined(CONFIG_SYS_NO_FLASH)
464 static char *failed = "*** failed ***\n";
468 * Tell if it's OK to load the environment early in boot.
470 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
471 * if this is OK (defaulting to saying it's not OK).
473 * NOTE: Loading the environment early can be a bad idea if security is
474 * important, since no verification is done on the environment.
476 * @return 0 if environment should not be loaded, !=0 if it is ok to load
478 static int should_load_env(void)
480 #ifdef CONFIG_OF_CONTROL
481 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
482 #elif defined CONFIG_DELAY_ENVIRONMENT
489 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
490 static void display_fdt_model(const void *blob)
494 model = (char *)fdt_getprop(blob, 0, "model", NULL);
495 printf("Model: %s\n", model ? model : "<unknown>");
499 /************************************************************************
501 * This is the next part if the initialization sequence: we are now
502 * running from RAM and have a "normal" C environment, i. e. global
503 * data can be written, BSS has been cleared, the stack size in not
504 * that critical any more, etc.
506 ************************************************************************
509 void board_init_r(gd_t *id, ulong dest_addr)
512 #if !defined(CONFIG_SYS_NO_FLASH)
516 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
517 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
519 monitor_flash_len = _end_ofs;
524 debug("monitor flash len: %08lX\n", monitor_flash_len);
525 board_init(); /* Setup chipselects */
527 * TODO: printing of the clock inforamtion of the board is now
528 * implemented as part of bdinfo command. Currently only support for
529 * davinci SOC's is added. Remove this check once all the board
533 set_cpu_clk_info(); /* Setup clock information */
537 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
539 #ifdef CONFIG_LOGBUFFER
543 post_output_backlog();
546 /* The Malloc area is immediately below the monitor copy in DRAM */
547 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
548 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
550 #ifdef CONFIG_ARCH_EARLY_INIT_R
555 #if !defined(CONFIG_SYS_NO_FLASH)
558 flash_size = flash_init();
559 if (flash_size > 0) {
560 # ifdef CONFIG_SYS_FLASH_CHECKSUM
561 print_size(flash_size, "");
563 * Compute and print flash CRC if flashchecksum is set to 'y'
565 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
567 if (getenv_yesno("flashchecksum") == 1) {
568 printf(" CRC: %08X", crc32(0,
569 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
573 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
574 print_size(flash_size, "\n");
575 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
582 #if defined(CONFIG_CMD_NAND)
584 nand_init(); /* go init the NAND */
587 #if defined(CONFIG_CMD_ONENAND)
591 #ifdef CONFIG_GENERIC_MMC
593 mmc_initialize(gd->bd);
596 #ifdef CONFIG_HAS_DATAFLASH
597 AT91F_DataflashInit();
598 dataflash_print_info();
601 /* initialize environment */
602 if (should_load_env())
605 set_default_env(NULL);
607 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
611 stdio_init(); /* get the devices list going. */
615 #if defined(CONFIG_API)
620 console_init_r(); /* fully init console as a device */
622 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
623 # ifdef CONFIG_OF_CONTROL
624 /* Put this here so it appears on the LCD, now it is ready */
625 display_fdt_model(gd->fdt_blob);
631 #if defined(CONFIG_ARCH_MISC_INIT)
632 /* miscellaneous arch dependent initialisations */
635 #if defined(CONFIG_MISC_INIT_R)
636 /* miscellaneous platform dependent initialisations */
640 /* enable exceptions */
643 /* Initialize from environment */
644 load_addr = getenv_ulong("loadaddr", 16, load_addr);
646 #ifdef CONFIG_BOARD_LATE_INIT
650 #ifdef CONFIG_BITBANGMII
653 #if defined(CONFIG_CMD_NET)
655 eth_initialize(gd->bd);
656 #if defined(CONFIG_RESET_PHY_R)
657 debug("Reset Ethernet PHY\n");
663 post_run(NULL, POST_RAM | post_bootmode_get(0));
666 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
668 * Export available size of memory for Linux,
669 * taking into account the protected RAM at top of memory
676 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
678 #ifdef CONFIG_LOGBUFFER
679 #ifndef CONFIG_ALT_LB_ADDR
680 /* Also take the logbuffer into account (pram is in kB) */
681 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
684 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
685 setenv("mem", (char *)memsz);
689 /* main_loop() can return to retry autoboot, if so just run it again. */
694 /* NOTREACHED - no way out of command loop except booting */