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>
41 #include <asm/sections.h>
43 #ifdef CONFIG_BITBANGMII
47 DECLARE_GLOBAL_DATA_PTR;
49 ulong monitor_flash_len;
51 #ifdef CONFIG_HAS_DATAFLASH
52 extern int AT91F_DataflashInit(void);
53 extern void dataflash_print_info(void);
56 #if defined(CONFIG_HARD_I2C) || \
57 defined(CONFIG_SYS_I2C)
61 /************************************************************************
62 * Coloured LED functionality
63 ************************************************************************
64 * May be supplied by boards if desired
66 inline void __coloured_LED_init(void) {}
67 void coloured_LED_init(void)
68 __attribute__((weak, alias("__coloured_LED_init")));
69 inline void __red_led_on(void) {}
70 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
71 inline void __red_led_off(void) {}
72 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
73 inline void __green_led_on(void) {}
74 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
75 inline void __green_led_off(void) {}
76 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
77 inline void __yellow_led_on(void) {}
78 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
79 inline void __yellow_led_off(void) {}
80 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
81 inline void __blue_led_on(void) {}
82 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
83 inline void __blue_led_off(void) {}
84 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
87 ************************************************************************
89 ************************************************************************
90 * Some of this code should be moved into the core functions,
91 * or dropped completely,
92 * but let's get it working (again) first...
95 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
96 #define CONFIG_BAUDRATE 115200
99 static int init_baudrate(void)
101 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
105 static int display_banner(void)
107 printf("\n\n%s\n\n", version_string);
108 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
110 (ulong)&__bss_start, (ulong)&__bss_end);
111 #ifdef CONFIG_MODEM_SUPPORT
112 debug("Modem Support enabled\n");
114 #ifdef CONFIG_USE_IRQ
115 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
116 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
123 * WARNING: this code looks "cleaner" than the PowerPC version, but
124 * has the disadvantage that you either get nothing, or everything.
125 * On PowerPC, you might see "DRAM: " before the system hangs - which
126 * gives a simple yet clear indication which part of the
127 * initialization if failing.
129 static int display_dram_config(void)
134 puts("RAM Configuration:\n");
136 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
137 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
138 print_size(gd->bd->bi_dram[i].size, "\n");
143 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
144 size += gd->bd->bi_dram[i].size;
147 print_size(size, "\n");
153 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
154 static int init_func_i2c(void)
157 #ifdef CONFIG_SYS_I2C
160 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
167 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
169 static int arm_pci_init(void)
174 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
177 * Breathe some life into the board...
179 * Initialize a serial port as console, and carry out some hardware
182 * The first part of initialization is running from Flash memory;
183 * its main purpose is to initialize the RAM so that we
184 * can relocate the monitor code to RAM.
188 * All attempts to come up with a "common" initialization sequence
189 * that works for all boards and architectures failed: some of the
190 * requirements are just _too_ different. To get rid of the resulting
191 * mess of board dependent #ifdef'ed code we now make the whole
192 * initialization sequence configurable to the user.
194 * The requirements for any new initalization function is simple: it
195 * receives a pointer to the "global data" structure as it's only
196 * argument, and returns an integer return code, where 0 means
197 * "continue" and != 0 means "fatal error, hang the system".
199 typedef int (init_fnc_t) (void);
201 void __dram_init_banksize(void)
203 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
204 gd->bd->bi_dram[0].size = gd->ram_size;
206 void dram_init_banksize(void)
207 __attribute__((weak, alias("__dram_init_banksize")));
209 int __arch_cpu_init(void)
213 int arch_cpu_init(void)
214 __attribute__((weak, alias("__arch_cpu_init")));
216 int __power_init_board(void)
220 int power_init_board(void)
221 __attribute__((weak, alias("__power_init_board")));
223 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
224 static int mark_bootstage(void)
226 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
231 init_fnc_t *init_sequence[] = {
232 arch_cpu_init, /* basic arch cpu dependent setup */
234 #ifdef CONFIG_OF_CONTROL
237 #if defined(CONFIG_BOARD_EARLY_INIT_F)
240 timer_init, /* initialize timer */
241 #ifdef CONFIG_BOARD_POSTCLK_INIT
244 #ifdef CONFIG_FSL_ESDHC
247 env_init, /* initialize environment */
248 init_baudrate, /* initialze baudrate settings */
249 serial_init, /* serial communications setup */
250 console_init_f, /* stage 1 init of console */
251 display_banner, /* say that we are here */
252 print_cpuinfo, /* display cpu info (and speed) */
253 #if defined(CONFIG_DISPLAY_BOARDINFO)
254 checkboard, /* display board info */
256 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
259 dram_init, /* configure available RAM banks */
263 void board_init_f(ulong bootflag)
266 init_fnc_t **init_fnc_ptr;
272 void *new_fdt = NULL;
275 memset((void *)gd, 0, sizeof(gd_t));
277 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
278 #ifdef CONFIG_OF_EMBED
279 /* Get a pointer to the FDT */
280 gd->fdt_blob = __dtb_dt_begin;
281 #elif defined CONFIG_OF_SEPARATE
282 /* FDT is at end of image */
283 gd->fdt_blob = &_end;
285 /* Allow the early environment to override the fdt address */
286 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
287 (uintptr_t)gd->fdt_blob);
289 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
290 if ((*init_fnc_ptr)() != 0) {
295 #ifdef CONFIG_OF_CONTROL
296 /* For now, put this check after the console is ready */
297 if (fdtdec_prepare_fdt()) {
298 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
299 "doc/README.fdt-control");
303 debug("monitor len: %08lX\n", gd->mon_len);
305 * Ram is setup, size stored in gd !!
307 debug("ramsize: %08lX\n", gd->ram_size);
308 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
310 * Subtract specified amount of memory to hide so that it won't
311 * get "touched" at all by U-Boot. By fixing up gd->ram_size
312 * the Linux kernel should now get passed the now "corrected"
313 * memory size and won't touch it either. This should work
314 * for arch/ppc and arch/powerpc. Only Linux board ports in
315 * arch/powerpc with bootwrapper support, that recalculate the
316 * memory size from the SDRAM controller setup will have to
319 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
322 addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
324 #ifdef CONFIG_LOGBUFFER
325 #ifndef CONFIG_ALT_LB_ADDR
326 /* reserve kernel log buffer */
327 addr -= (LOGBUFF_RESERVE);
328 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
335 * reserve protected RAM
337 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
338 addr -= (reg << 10); /* size is in kB */
339 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
340 #endif /* CONFIG_PRAM */
342 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
343 /* reserve TLB table */
344 gd->arch.tlb_size = PGTABLE_SIZE;
345 addr -= gd->arch.tlb_size;
347 /* round down to next 64 kB limit */
348 addr &= ~(0x10000 - 1);
350 gd->arch.tlb_addr = addr;
351 debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
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 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
405 * If the device tree is sitting immediate above our image then we
406 * must relocate it. If it is embedded in the data section, then it
407 * will be relocated with other data.
410 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
413 new_fdt = (void *)addr_sp;
414 debug("Reserving %zu Bytes for FDT at: %08lx\n",
420 /* setup stackpointer for exeptions */
421 gd->irq_sp = addr_sp;
422 #ifdef CONFIG_USE_IRQ
423 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
424 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
425 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
427 /* leave 3 words for abort-stack */
430 /* 8-byte alignment for ABI compliance */
432 #else /* CONFIG_ARM64 */
433 /* 16-byte alignment for ABI compliance */
435 #endif /* CONFIG_ARM64 */
437 addr_sp += 128; /* leave 32 words for abort-stack */
438 gd->irq_sp = addr_sp;
441 debug("New Stack Pointer is: %08lx\n", addr_sp);
444 post_bootmode_init();
445 post_run(NULL, POST_ROM | post_bootmode_get(0));
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 - (ulong)&_start;
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 = (ulong)&__rel_dyn_end - (ulong)_start;
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_CMD_SCSI
601 #ifdef CONFIG_HAS_DATAFLASH
602 AT91F_DataflashInit();
603 dataflash_print_info();
606 /* initialize environment */
607 if (should_load_env())
610 set_default_env(NULL);
612 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
616 stdio_init(); /* get the devices list going. */
620 #if defined(CONFIG_API)
625 console_init_r(); /* fully init console as a device */
627 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
628 # ifdef CONFIG_OF_CONTROL
629 /* Put this here so it appears on the LCD, now it is ready */
630 display_fdt_model(gd->fdt_blob);
636 #if defined(CONFIG_ARCH_MISC_INIT)
637 /* miscellaneous arch dependent initialisations */
640 #if defined(CONFIG_MISC_INIT_R)
641 /* miscellaneous platform dependent initialisations */
645 /* set up exceptions */
647 /* enable exceptions */
650 /* Initialize from environment */
651 load_addr = getenv_ulong("loadaddr", 16, load_addr);
653 #ifdef CONFIG_BOARD_LATE_INIT
657 #ifdef CONFIG_BITBANGMII
660 #if defined(CONFIG_CMD_NET)
662 eth_initialize(gd->bd);
663 #if defined(CONFIG_RESET_PHY_R)
664 debug("Reset Ethernet PHY\n");
670 post_run(NULL, POST_RAM | post_bootmode_get(0));
673 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
675 * Export available size of memory for Linux,
676 * taking into account the protected RAM at top of memory
683 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
685 #ifdef CONFIG_LOGBUFFER
686 #ifndef CONFIG_ALT_LB_ADDR
687 /* Also take the logbuffer into account (pram is in kB) */
688 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
691 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
692 setenv("mem", (char *)memsz);
696 /* main_loop() can return to retry autoboot, if so just run it again. */
701 /* NOTREACHED - no way out of command loop except booting */