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>
54 #ifdef CONFIG_BITBANGMII
58 #ifdef CONFIG_DRIVER_SMC91111
59 #include "../drivers/net/smc91111.h"
61 #ifdef CONFIG_DRIVER_LAN91C96
62 #include "../drivers/net/lan91c96.h"
65 DECLARE_GLOBAL_DATA_PTR;
67 ulong monitor_flash_len;
69 #ifdef CONFIG_HAS_DATAFLASH
70 extern int AT91F_DataflashInit(void);
71 extern void dataflash_print_info(void);
74 #ifdef CONFIG_DRIVER_RTL8019
75 extern void rtl8019_get_enetaddr (uchar * addr);
78 #if defined(CONFIG_HARD_I2C) || \
79 defined(CONFIG_SOFT_I2C)
84 /************************************************************************
85 * Coloured LED functionality
86 ************************************************************************
87 * May be supplied by boards if desired
89 inline void __coloured_LED_init(void) {}
90 void coloured_LED_init(void)
91 __attribute__((weak, alias("__coloured_LED_init")));
92 inline void __red_led_on(void) {}
93 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
94 inline void __red_led_off(void) {}
95 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
96 inline void __green_led_on(void) {}
97 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
98 inline void __green_led_off(void) {}
99 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
100 inline void __yellow_led_on(void) {}
101 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
102 inline void __yellow_led_off(void) {}
103 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
104 inline void __blue_led_on(void) {}
105 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
106 inline void __blue_led_off(void) {}
107 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
110 ************************************************************************
112 ************************************************************************
113 * Some of this code should be moved into the core functions,
114 * or dropped completely,
115 * but let's get it working (again) first...
118 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
119 #define CONFIG_BAUDRATE 115200
121 static int init_baudrate(void)
123 char tmp[64]; /* long enough for environment variables */
124 int i = getenv_f("baudrate", tmp, sizeof(tmp));
126 gd->baudrate = (i > 0)
127 ? (int) simple_strtoul(tmp, NULL, 10)
133 static int display_banner(void)
135 printf("\n\n%s\n\n", version_string);
136 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
138 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
139 #ifdef CONFIG_MODEM_SUPPORT
140 debug("Modem Support enabled\n");
142 #ifdef CONFIG_USE_IRQ
143 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
144 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
151 * WARNING: this code looks "cleaner" than the PowerPC version, but
152 * has the disadvantage that you either get nothing, or everything.
153 * On PowerPC, you might see "DRAM: " before the system hangs - which
154 * gives a simple yet clear indication which part of the
155 * initialization if failing.
157 static int display_dram_config(void)
162 puts("RAM Configuration:\n");
164 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
165 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
166 print_size(gd->bd->bi_dram[i].size, "\n");
171 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
172 size += gd->bd->bi_dram[i].size;
175 print_size(size, "\n");
181 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
182 static int init_func_i2c(void)
185 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
191 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
193 static int arm_pci_init(void)
198 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
201 * Breathe some life into the board...
203 * Initialize a serial port as console, and carry out some hardware
206 * The first part of initialization is running from Flash memory;
207 * its main purpose is to initialize the RAM so that we
208 * can relocate the monitor code to RAM.
212 * All attempts to come up with a "common" initialization sequence
213 * that works for all boards and architectures failed: some of the
214 * requirements are just _too_ different. To get rid of the resulting
215 * mess of board dependent #ifdef'ed code we now make the whole
216 * initialization sequence configurable to the user.
218 * The requirements for any new initalization function is simple: it
219 * receives a pointer to the "global data" structure as it's only
220 * argument, and returns an integer return code, where 0 means
221 * "continue" and != 0 means "fatal error, hang the system".
223 typedef int (init_fnc_t) (void);
225 int print_cpuinfo(void);
227 void __dram_init_banksize(void)
229 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
230 gd->bd->bi_dram[0].size = gd->ram_size;
232 void dram_init_banksize(void)
233 __attribute__((weak, alias("__dram_init_banksize")));
235 init_fnc_t *init_sequence[] = {
236 #if defined(CONFIG_ARCH_CPU_INIT)
237 arch_cpu_init, /* basic arch cpu dependent setup */
239 #if defined(CONFIG_BOARD_EARLY_INIT_F)
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;
271 /* Pointer is writable since we allocated a register for it */
272 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
273 /* compiler optimization barrier needed for GCC >= 3.4 */
274 __asm__ __volatile__("": : :"memory");
276 memset((void *)gd, 0, sizeof(gd_t));
278 gd->mon_len = _bss_end_ofs;
280 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
281 if ((*init_fnc_ptr)() != 0) {
286 debug("monitor len: %08lX\n", gd->mon_len);
288 * Ram is setup, size stored in gd !!
290 debug("ramsize: %08lX\n", gd->ram_size);
291 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
293 * Subtract specified amount of memory to hide so that it won't
294 * get "touched" at all by U-Boot. By fixing up gd->ram_size
295 * the Linux kernel should now get passed the now "corrected"
296 * memory size and won't touch it either. This should work
297 * for arch/ppc and arch/powerpc. Only Linux board ports in
298 * arch/powerpc with bootwrapper support, that recalculate the
299 * memory size from the SDRAM controller setup will have to
302 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
305 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
307 #ifdef CONFIG_LOGBUFFER
308 #ifndef CONFIG_ALT_LB_ADDR
309 /* reserve kernel log buffer */
310 addr -= (LOGBUFF_RESERVE);
311 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
318 * reserve protected RAM
320 i = getenv_r("pram", (char *)tmp, sizeof(tmp));
321 reg = (i > 0) ? simple_strtoul((const char *)tmp, NULL, 10) :
323 addr -= (reg << 10); /* size is in kB */
324 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
325 #endif /* CONFIG_PRAM */
327 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
328 /* reserve TLB table */
331 /* round down to next 64 kB limit */
332 addr &= ~(0x10000 - 1);
335 debug("TLB table at: %08lx\n", addr);
338 /* round down to next 4 kB limit */
340 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
343 #ifdef CONFIG_FB_ADDR
344 gd->fb_base = CONFIG_FB_ADDR;
346 /* reserve memory for LCD display (always full pages) */
347 addr = lcd_setmem(addr);
349 #endif /* CONFIG_FB_ADDR */
350 #endif /* CONFIG_LCD */
353 * reserve memory for U-Boot code, data & bss
354 * round down to next 4 kB limit
359 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
361 #ifndef CONFIG_SPL_BUILD
363 * reserve memory for malloc() arena
365 addr_sp = addr - TOTAL_MALLOC_LEN;
366 debug("Reserving %dk for malloc() at: %08lx\n",
367 TOTAL_MALLOC_LEN >> 10, addr_sp);
369 * (permanently) allocate a Board Info struct
370 * and a permanent copy of the "global" data
372 addr_sp -= sizeof (bd_t);
373 bd = (bd_t *) addr_sp;
375 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
376 sizeof (bd_t), addr_sp);
378 #ifdef CONFIG_MACH_TYPE
379 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
382 addr_sp -= sizeof (gd_t);
383 id = (gd_t *) addr_sp;
384 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
385 sizeof (gd_t), addr_sp);
387 /* setup stackpointer for exeptions */
388 gd->irq_sp = addr_sp;
389 #ifdef CONFIG_USE_IRQ
390 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
391 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
392 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
394 /* leave 3 words for abort-stack */
397 /* 8-byte alignment for ABI compliance */
400 addr_sp += 128; /* leave 32 words for abort-stack */
401 gd->irq_sp = addr_sp;
404 debug("New Stack Pointer is: %08lx\n", addr_sp);
407 post_bootmode_init();
408 post_run(NULL, POST_ROM | post_bootmode_get(0));
411 gd->bd->bi_baudrate = gd->baudrate;
412 /* Ram ist board specific, so move it to board code ... */
413 dram_init_banksize();
414 display_dram_config(); /* and display it */
416 gd->relocaddr = addr;
417 gd->start_addr_sp = addr_sp;
418 gd->reloc_off = addr - _TEXT_BASE;
419 debug("relocation Offset is: %08lx\n", gd->reloc_off);
420 memcpy(id, (void *)gd, sizeof(gd_t));
422 relocate_code(addr_sp, id, addr);
424 /* NOTREACHED - relocate_code() does not return */
427 #if !defined(CONFIG_SYS_NO_FLASH)
428 static char *failed = "*** failed ***\n";
432 ************************************************************************
434 * This is the next part if the initialization sequence: we are now
435 * running from RAM and have a "normal" C environment, i. e. global
436 * data can be written, BSS has been cleared, the stack size in not
437 * that critical any more, etc.
439 ************************************************************************
442 void board_init_r(gd_t *id, ulong dest_addr)
446 #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
518 mmc_initialize(gd->bd);
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)
590 eth_initialize(gd->bd);
591 #if defined(CONFIG_RESET_PHY_R)
592 debug("Reset Ethernet PHY\n");
598 post_run(NULL, POST_RAM | post_bootmode_get(0));
601 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
603 * Export available size of memory for Linux,
604 * taking into account the protected RAM at top of memory
614 pram = simple_strtoul(s, NULL, 10);
620 #ifdef CONFIG_LOGBUFFER
621 #ifndef CONFIG_ALT_LB_ADDR
622 /* Also take the logbuffer into account (pram is in kB) */
623 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
626 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
627 setenv("mem", (char *)memsz);
631 /* main_loop() can return to retry autoboot, if so just run it again. */
636 /* NOTREACHED - no way out of command loop except booting */
641 puts("### ERROR ### Please RESET the board ###\n");