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 #ifdef CONFIG_DRIVER_RTL8019
77 extern void rtl8019_get_enetaddr (uchar * addr);
80 #if defined(CONFIG_HARD_I2C) || \
81 defined(CONFIG_SOFT_I2C)
86 /************************************************************************
87 * Coloured LED functionality
88 ************************************************************************
89 * May be supplied by boards if desired
91 inline void __coloured_LED_init(void) {}
92 void coloured_LED_init(void)
93 __attribute__((weak, alias("__coloured_LED_init")));
94 inline void __red_led_on(void) {}
95 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
96 inline void __red_led_off(void) {}
97 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
98 inline void __green_led_on(void) {}
99 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
100 inline void __green_led_off(void) {}
101 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
102 inline void __yellow_led_on(void) {}
103 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
104 inline void __yellow_led_off(void) {}
105 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
106 inline void __blue_led_on(void) {}
107 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
108 inline void __blue_led_off(void) {}
109 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
112 ************************************************************************
114 ************************************************************************
115 * Some of this code should be moved into the core functions,
116 * or dropped completely,
117 * but let's get it working (again) first...
120 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
121 #define CONFIG_BAUDRATE 115200
124 static int init_baudrate(void)
126 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
130 static int display_banner(void)
132 printf("\n\n%s\n\n", version_string);
133 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
135 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
136 #ifdef CONFIG_MODEM_SUPPORT
137 debug("Modem Support enabled\n");
139 #ifdef CONFIG_USE_IRQ
140 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
141 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
148 * WARNING: this code looks "cleaner" than the PowerPC version, but
149 * has the disadvantage that you either get nothing, or everything.
150 * On PowerPC, you might see "DRAM: " before the system hangs - which
151 * gives a simple yet clear indication which part of the
152 * initialization if failing.
154 static int display_dram_config(void)
159 puts("RAM Configuration:\n");
161 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
162 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
163 print_size(gd->bd->bi_dram[i].size, "\n");
168 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
169 size += gd->bd->bi_dram[i].size;
172 print_size(size, "\n");
178 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
179 static int init_func_i2c(void)
182 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
188 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
190 static int arm_pci_init(void)
195 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
198 * Breathe some life into the board...
200 * Initialize a serial port as console, and carry out some hardware
203 * The first part of initialization is running from Flash memory;
204 * its main purpose is to initialize the RAM so that we
205 * can relocate the monitor code to RAM.
209 * All attempts to come up with a "common" initialization sequence
210 * that works for all boards and architectures failed: some of the
211 * requirements are just _too_ different. To get rid of the resulting
212 * mess of board dependent #ifdef'ed code we now make the whole
213 * initialization sequence configurable to the user.
215 * The requirements for any new initalization function is simple: it
216 * receives a pointer to the "global data" structure as it's only
217 * argument, and returns an integer return code, where 0 means
218 * "continue" and != 0 means "fatal error, hang the system".
220 typedef int (init_fnc_t) (void);
222 int print_cpuinfo(void);
224 void __dram_init_banksize(void)
226 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
227 gd->bd->bi_dram[0].size = gd->ram_size;
229 void dram_init_banksize(void)
230 __attribute__((weak, alias("__dram_init_banksize")));
232 init_fnc_t *init_sequence[] = {
233 #if defined(CONFIG_ARCH_CPU_INIT)
234 arch_cpu_init, /* basic arch cpu dependent setup */
236 #if defined(CONFIG_BOARD_EARLY_INIT_F)
239 #ifdef CONFIG_OF_CONTROL
242 timer_init, /* initialize timer */
243 #ifdef CONFIG_FSL_ESDHC
246 env_init, /* initialize environment */
247 init_baudrate, /* initialze baudrate settings */
248 serial_init, /* serial communications setup */
249 console_init_f, /* stage 1 init of console */
250 display_banner, /* say that we are here */
251 #if defined(CONFIG_DISPLAY_CPUINFO)
252 print_cpuinfo, /* display cpu info (and speed) */
254 #if defined(CONFIG_DISPLAY_BOARDINFO)
255 checkboard, /* display board info */
257 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
260 dram_init, /* configure available RAM banks */
264 void board_init_f(ulong bootflag)
267 init_fnc_t **init_fnc_ptr;
274 /* Pointer is writable since we allocated a register for it */
275 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
276 /* compiler optimization barrier needed for GCC >= 3.4 */
277 __asm__ __volatile__("": : :"memory");
279 memset((void *)gd, 0, sizeof(gd_t));
281 gd->mon_len = _bss_end_ofs;
282 #ifdef CONFIG_OF_EMBED
283 /* Get a pointer to the FDT */
284 gd->fdt_blob = _binary_dt_dtb_start;
285 #elif defined CONFIG_OF_SEPARATE
286 /* FDT is at end of image */
287 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
289 /* Allow the early environment to override the fdt address */
290 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
291 (uintptr_t)gd->fdt_blob);
293 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
294 if ((*init_fnc_ptr)() != 0) {
299 debug("monitor len: %08lX\n", gd->mon_len);
301 * Ram is setup, size stored in gd !!
303 debug("ramsize: %08lX\n", gd->ram_size);
304 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
306 * Subtract specified amount of memory to hide so that it won't
307 * get "touched" at all by U-Boot. By fixing up gd->ram_size
308 * the Linux kernel should now get passed the now "corrected"
309 * memory size and won't touch it either. This should work
310 * for arch/ppc and arch/powerpc. Only Linux board ports in
311 * arch/powerpc with bootwrapper support, that recalculate the
312 * memory size from the SDRAM controller setup will have to
315 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
318 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
320 #ifdef CONFIG_LOGBUFFER
321 #ifndef CONFIG_ALT_LB_ADDR
322 /* reserve kernel log buffer */
323 addr -= (LOGBUFF_RESERVE);
324 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
331 * reserve protected RAM
333 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
334 addr -= (reg << 10); /* size is in kB */
335 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
336 #endif /* CONFIG_PRAM */
338 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
339 /* reserve TLB table */
342 /* round down to next 64 kB limit */
343 addr &= ~(0x10000 - 1);
346 debug("TLB table at: %08lx\n", addr);
349 /* round down to next 4 kB limit */
351 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
354 #ifdef CONFIG_FB_ADDR
355 gd->fb_base = CONFIG_FB_ADDR;
357 /* reserve memory for LCD display (always full pages) */
358 addr = lcd_setmem(addr);
360 #endif /* CONFIG_FB_ADDR */
361 #endif /* CONFIG_LCD */
364 * reserve memory for U-Boot code, data & bss
365 * round down to next 4 kB limit
370 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
372 #ifndef CONFIG_SPL_BUILD
374 * reserve memory for malloc() arena
376 addr_sp = addr - TOTAL_MALLOC_LEN;
377 debug("Reserving %dk for malloc() at: %08lx\n",
378 TOTAL_MALLOC_LEN >> 10, addr_sp);
380 * (permanently) allocate a Board Info struct
381 * and a permanent copy of the "global" data
383 addr_sp -= sizeof (bd_t);
384 bd = (bd_t *) addr_sp;
386 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
387 sizeof (bd_t), addr_sp);
389 #ifdef CONFIG_MACH_TYPE
390 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
393 addr_sp -= sizeof (gd_t);
394 id = (gd_t *) addr_sp;
395 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
396 sizeof (gd_t), addr_sp);
398 /* setup stackpointer for exeptions */
399 gd->irq_sp = addr_sp;
400 #ifdef CONFIG_USE_IRQ
401 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
402 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
403 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
405 /* leave 3 words for abort-stack */
408 /* 8-byte alignment for ABI compliance */
411 addr_sp += 128; /* leave 32 words for abort-stack */
412 gd->irq_sp = addr_sp;
415 debug("New Stack Pointer is: %08lx\n", addr_sp);
418 post_bootmode_init();
419 post_run(NULL, POST_ROM | post_bootmode_get(0));
422 gd->bd->bi_baudrate = gd->baudrate;
423 /* Ram ist board specific, so move it to board code ... */
424 dram_init_banksize();
425 display_dram_config(); /* and display it */
427 gd->relocaddr = addr;
428 gd->start_addr_sp = addr_sp;
429 gd->reloc_off = addr - _TEXT_BASE;
430 debug("relocation Offset is: %08lx\n", gd->reloc_off);
431 memcpy(id, (void *)gd, sizeof(gd_t));
433 relocate_code(addr_sp, id, addr);
435 /* NOTREACHED - relocate_code() does not return */
438 #if !defined(CONFIG_SYS_NO_FLASH)
439 static char *failed = "*** failed ***\n";
443 ************************************************************************
445 * This is the next part if the initialization sequence: we are now
446 * running from RAM and have a "normal" C environment, i. e. global
447 * data can be written, BSS has been cleared, the stack size in not
448 * that critical any more, etc.
450 ************************************************************************
453 void board_init_r(gd_t *id, ulong dest_addr)
456 #if !defined(CONFIG_SYS_NO_FLASH)
462 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
464 monitor_flash_len = _end_ofs;
469 debug("monitor flash len: %08lX\n", monitor_flash_len);
470 board_init(); /* Setup chipselects */
472 #ifdef CONFIG_SERIAL_MULTI
476 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
478 #ifdef CONFIG_LOGBUFFER
482 post_output_backlog();
485 /* The Malloc area is immediately below the monitor copy in DRAM */
486 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
487 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
489 #if !defined(CONFIG_SYS_NO_FLASH)
492 flash_size = flash_init();
493 if (flash_size > 0) {
494 # ifdef CONFIG_SYS_FLASH_CHECKSUM
495 char *s = getenv("flashchecksum");
497 print_size(flash_size, "");
499 * Compute and print flash CRC if flashchecksum is set to 'y'
501 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
503 if (s && (*s == 'y')) {
504 printf(" CRC: %08X", crc32(0,
505 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
509 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
510 print_size(flash_size, "\n");
511 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
518 #if defined(CONFIG_CMD_NAND)
520 nand_init(); /* go init the NAND */
523 #if defined(CONFIG_CMD_ONENAND)
527 #ifdef CONFIG_GENERIC_MMC
529 mmc_initialize(gd->bd);
532 #ifdef CONFIG_HAS_DATAFLASH
533 AT91F_DataflashInit();
534 dataflash_print_info();
537 /* initialize environment */
540 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
545 gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
547 stdio_init(); /* get the devices list going. */
551 #if defined(CONFIG_API)
556 console_init_r(); /* fully init console as a device */
558 #if defined(CONFIG_ARCH_MISC_INIT)
559 /* miscellaneous arch dependent initialisations */
562 #if defined(CONFIG_MISC_INIT_R)
563 /* miscellaneous platform dependent initialisations */
567 /* set up exceptions */
569 /* enable exceptions */
572 /* Perform network card initialisation if necessary */
573 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
574 /* XXX: this needs to be moved to board init */
575 if (getenv("ethaddr")) {
577 eth_getenv_enetaddr("ethaddr", enetaddr);
578 smc_set_mac_addr(enetaddr);
580 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
582 /* Initialize from environment */
583 load_addr = getenv_ulong("loadaddr", 16, load_addr);
584 #if defined(CONFIG_CMD_NET)
586 char *s = getenv("bootfile");
589 copy_filename(BootFile, s, sizeof(BootFile));
593 #ifdef BOARD_LATE_INIT
597 #ifdef CONFIG_BITBANGMII
600 #if defined(CONFIG_CMD_NET)
602 eth_initialize(gd->bd);
603 #if defined(CONFIG_RESET_PHY_R)
604 debug("Reset Ethernet PHY\n");
610 post_run(NULL, POST_RAM | post_bootmode_get(0));
613 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
615 * Export available size of memory for Linux,
616 * taking into account the protected RAM at top of memory
623 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
625 #ifdef CONFIG_LOGBUFFER
626 #ifndef CONFIG_ALT_LB_ADDR
627 /* Also take the logbuffer into account (pram is in kB) */
628 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
631 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
632 setenv("mem", (char *)memsz);
636 /* main_loop() can return to retry autoboot, if so just run it again. */
641 /* NOTREACHED - no way out of command loop except booting */
646 puts("### ERROR ### Please RESET the board ###\n");