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>
52 #ifdef CONFIG_BITBANGMII
56 #ifdef CONFIG_DRIVER_SMC91111
57 #include "../drivers/net/smc91111.h"
59 #ifdef CONFIG_DRIVER_LAN91C96
60 #include "../drivers/net/lan91c96.h"
63 DECLARE_GLOBAL_DATA_PTR;
65 ulong monitor_flash_len;
67 #ifdef CONFIG_HAS_DATAFLASH
68 extern int AT91F_DataflashInit(void);
69 extern void dataflash_print_info(void);
72 #ifdef CONFIG_DRIVER_RTL8019
73 extern void rtl8019_get_enetaddr (uchar * addr);
76 #if defined(CONFIG_HARD_I2C) || \
77 defined(CONFIG_SOFT_I2C)
82 /************************************************************************
83 * Coloured LED functionality
84 ************************************************************************
85 * May be supplied by boards if desired
87 inline void __coloured_LED_init(void) {}
88 void coloured_LED_init(void)
89 __attribute__((weak, alias("__coloured_LED_init")));
90 inline void __red_led_on(void) {}
91 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
92 inline void __red_led_off(void) {}
93 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
94 inline void __green_led_on(void) {}
95 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
96 inline void __green_led_off(void) {}
97 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
98 inline void __yellow_led_on(void) {}
99 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
100 inline void __yellow_led_off(void) {}
101 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
102 inline void __blue_led_on(void) {}
103 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
104 inline void __blue_led_off(void) {}
105 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
108 ************************************************************************
110 ************************************************************************
111 * Some of this code should be moved into the core functions,
112 * or dropped completely,
113 * but let's get it working (again) first...
116 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
117 #define CONFIG_BAUDRATE 115200
119 static int init_baudrate(void)
121 char tmp[64]; /* long enough for environment variables */
122 int i = getenv_f("baudrate", tmp, sizeof(tmp));
124 gd->baudrate = (i > 0)
125 ? (int) simple_strtoul(tmp, NULL, 10)
131 static int display_banner(void)
133 printf("\n\n%s\n\n", version_string);
134 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
136 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
137 #ifdef CONFIG_MODEM_SUPPORT
138 debug("Modem Support enabled\n");
140 #ifdef CONFIG_USE_IRQ
141 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
142 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
149 * WARNING: this code looks "cleaner" than the PowerPC version, but
150 * has the disadvantage that you either get nothing, or everything.
151 * On PowerPC, you might see "DRAM: " before the system hangs - which
152 * gives a simple yet clear indication which part of the
153 * initialization if failing.
155 static int display_dram_config(void)
160 puts("RAM Configuration:\n");
162 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
163 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
164 print_size(gd->bd->bi_dram[i].size, "\n");
169 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
170 size += gd->bd->bi_dram[i].size;
173 print_size(size, "\n");
179 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
180 static int init_func_i2c(void)
183 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
189 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
191 static int arm_pci_init(void)
196 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
199 * Breathe some life into the board...
201 * Initialize a serial port as console, and carry out some hardware
204 * The first part of initialization is running from Flash memory;
205 * its main purpose is to initialize the RAM so that we
206 * can relocate the monitor code to RAM.
210 * All attempts to come up with a "common" initialization sequence
211 * that works for all boards and architectures failed: some of the
212 * requirements are just _too_ different. To get rid of the resulting
213 * mess of board dependent #ifdef'ed code we now make the whole
214 * initialization sequence configurable to the user.
216 * The requirements for any new initalization function is simple: it
217 * receives a pointer to the "global data" structure as it's only
218 * argument, and returns an integer return code, where 0 means
219 * "continue" and != 0 means "fatal error, hang the system".
221 typedef int (init_fnc_t) (void);
223 int print_cpuinfo(void);
225 void __dram_init_banksize(void)
227 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
228 gd->bd->bi_dram[0].size = gd->ram_size;
230 void dram_init_banksize(void)
231 __attribute__((weak, alias("__dram_init_banksize")));
233 init_fnc_t *init_sequence[] = {
234 #if defined(CONFIG_ARCH_CPU_INIT)
235 arch_cpu_init, /* basic arch cpu dependent setup */
237 #if defined(CONFIG_BOARD_EARLY_INIT_F)
240 timer_init, /* initialize timer */
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;
269 /* Pointer is writable since we allocated a register for it */
270 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
271 /* compiler optimization barrier needed for GCC >= 3.4 */
272 __asm__ __volatile__("": : :"memory");
274 memset((void *)gd, 0, sizeof(gd_t));
276 gd->mon_len = _bss_end_ofs;
278 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
279 if ((*init_fnc_ptr)() != 0) {
284 debug("monitor len: %08lX\n", gd->mon_len);
286 * Ram is setup, size stored in gd !!
288 debug("ramsize: %08lX\n", gd->ram_size);
289 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
291 * Subtract specified amount of memory to hide so that it won't
292 * get "touched" at all by U-Boot. By fixing up gd->ram_size
293 * the Linux kernel should now get passed the now "corrected"
294 * memory size and won't touch it either. This should work
295 * for arch/ppc and arch/powerpc. Only Linux board ports in
296 * arch/powerpc with bootwrapper support, that recalculate the
297 * memory size from the SDRAM controller setup will have to
300 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
303 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
305 #ifdef CONFIG_LOGBUFFER
306 #ifndef CONFIG_ALT_LB_ADDR
307 /* reserve kernel log buffer */
308 addr -= (LOGBUFF_RESERVE);
309 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
316 * reserve protected RAM
318 i = getenv_r("pram", (char *)tmp, sizeof(tmp));
319 reg = (i > 0) ? simple_strtoul((const char *)tmp, NULL, 10) :
321 addr -= (reg << 10); /* size is in kB */
322 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
323 #endif /* CONFIG_PRAM */
325 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
326 /* reserve TLB table */
329 /* round down to next 64 kB limit */
330 addr &= ~(0x10000 - 1);
333 debug("TLB table at: %08lx\n", addr);
336 /* round down to next 4 kB limit */
338 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
341 #ifdef CONFIG_FB_ADDR
342 gd->fb_base = CONFIG_FB_ADDR;
344 /* reserve memory for LCD display (always full pages) */
345 addr = lcd_setmem(addr);
347 #endif /* CONFIG_FB_ADDR */
348 #endif /* CONFIG_LCD */
351 * reserve memory for U-Boot code, data & bss
352 * round down to next 4 kB limit
357 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
359 #ifndef CONFIG_SPL_BUILD
361 * reserve memory for malloc() arena
363 addr_sp = addr - TOTAL_MALLOC_LEN;
364 debug("Reserving %dk for malloc() at: %08lx\n",
365 TOTAL_MALLOC_LEN >> 10, addr_sp);
367 * (permanently) allocate a Board Info struct
368 * and a permanent copy of the "global" data
370 addr_sp -= sizeof (bd_t);
371 bd = (bd_t *) addr_sp;
373 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
374 sizeof (bd_t), addr_sp);
376 #ifdef CONFIG_MACH_TYPE
377 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
380 addr_sp -= sizeof (gd_t);
381 id = (gd_t *) addr_sp;
382 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
383 sizeof (gd_t), addr_sp);
385 /* setup stackpointer for exeptions */
386 gd->irq_sp = addr_sp;
387 #ifdef CONFIG_USE_IRQ
388 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
389 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
390 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
392 /* leave 3 words for abort-stack */
395 /* 8-byte alignment for ABI compliance */
398 addr_sp += 128; /* leave 32 words for abort-stack */
399 gd->irq_sp = addr_sp;
402 debug("New Stack Pointer is: %08lx\n", addr_sp);
405 post_bootmode_init();
406 post_run(NULL, POST_ROM | post_bootmode_get(0));
409 gd->bd->bi_baudrate = gd->baudrate;
410 /* Ram ist board specific, so move it to board code ... */
411 dram_init_banksize();
412 display_dram_config(); /* and display it */
414 gd->relocaddr = addr;
415 gd->start_addr_sp = addr_sp;
416 gd->reloc_off = addr - _TEXT_BASE;
417 debug("relocation Offset is: %08lx\n", gd->reloc_off);
418 memcpy(id, (void *)gd, sizeof(gd_t));
420 relocate_code(addr_sp, id, addr);
422 /* NOTREACHED - relocate_code() does not return */
425 #if !defined(CONFIG_SYS_NO_FLASH)
426 static char *failed = "*** failed ***\n";
430 ************************************************************************
432 * This is the next part if the initialization sequence: we are now
433 * running from RAM and have a "normal" C environment, i. e. global
434 * data can be written, BSS has been cleared, the stack size in not
435 * that critical any more, etc.
437 ************************************************************************
440 void board_init_r(gd_t *id, ulong dest_addr)
445 #if !defined(CONFIG_SYS_NO_FLASH)
452 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
454 monitor_flash_len = _end_ofs;
459 debug("monitor flash len: %08lX\n", monitor_flash_len);
460 board_init(); /* Setup chipselects */
462 #ifdef CONFIG_SERIAL_MULTI
466 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
468 #ifdef CONFIG_LOGBUFFER
472 post_output_backlog();
475 /* The Malloc area is immediately below the monitor copy in DRAM */
476 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
477 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
479 #if !defined(CONFIG_SYS_NO_FLASH)
482 flash_size = flash_init();
483 if (flash_size > 0) {
484 # ifdef CONFIG_SYS_FLASH_CHECKSUM
485 print_size(flash_size, "");
487 * Compute and print flash CRC if flashchecksum is set to 'y'
489 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
491 s = getenv("flashchecksum");
492 if (s && (*s == 'y')) {
493 printf(" CRC: %08X", crc32(0,
494 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
498 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
499 print_size(flash_size, "\n");
500 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
507 #if defined(CONFIG_CMD_NAND)
509 nand_init(); /* go init the NAND */
512 #if defined(CONFIG_CMD_ONENAND)
516 #ifdef CONFIG_GENERIC_MMC
521 #ifdef CONFIG_HAS_DATAFLASH
522 AT91F_DataflashInit();
523 dataflash_print_info();
526 /* initialize environment */
529 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
534 gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
536 stdio_init(); /* get the devices list going. */
540 #if defined(CONFIG_API)
545 console_init_r(); /* fully init console as a device */
547 #if defined(CONFIG_ARCH_MISC_INIT)
548 /* miscellaneous arch dependent initialisations */
551 #if defined(CONFIG_MISC_INIT_R)
552 /* miscellaneous platform dependent initialisations */
556 /* set up exceptions */
558 /* enable exceptions */
561 /* Perform network card initialisation if necessary */
562 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
563 /* XXX: this needs to be moved to board init */
564 if (getenv("ethaddr")) {
566 eth_getenv_enetaddr("ethaddr", enetaddr);
567 smc_set_mac_addr(enetaddr);
569 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
571 /* Initialize from environment */
572 s = getenv("loadaddr");
574 load_addr = simple_strtoul(s, NULL, 16);
575 #if defined(CONFIG_CMD_NET)
576 s = getenv("bootfile");
578 copy_filename(BootFile, s, sizeof(BootFile));
581 #ifdef BOARD_LATE_INIT
585 #ifdef CONFIG_BITBANGMII
588 #if defined(CONFIG_CMD_NET)
589 #if defined(CONFIG_NET_MULTI)
592 eth_initialize(gd->bd);
593 #if defined(CONFIG_RESET_PHY_R)
594 debug("Reset Ethernet PHY\n");
600 post_run(NULL, POST_RAM | post_bootmode_get(0));
603 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
605 * Export available size of memory for Linux,
606 * taking into account the protected RAM at top of memory
616 pram = simple_strtoul(s, NULL, 10);
622 #ifdef CONFIG_LOGBUFFER
623 #ifndef CONFIG_ALT_LB_ADDR
624 /* Also take the logbuffer into account (pram is in kB) */
625 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
628 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
629 setenv("mem", (char *)memsz);
633 /* main_loop() can return to retry autoboot, if so just run it again. */
638 /* NOTREACHED - no way out of command loop except booting */
643 puts("### ERROR ### Please RESET the board ###\n");