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
122 static int init_baudrate(void)
124 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
128 static int display_banner(void)
130 printf("\n\n%s\n\n", version_string);
131 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
133 _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
134 #ifdef CONFIG_MODEM_SUPPORT
135 debug("Modem Support enabled\n");
137 #ifdef CONFIG_USE_IRQ
138 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
139 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
146 * WARNING: this code looks "cleaner" than the PowerPC version, but
147 * has the disadvantage that you either get nothing, or everything.
148 * On PowerPC, you might see "DRAM: " before the system hangs - which
149 * gives a simple yet clear indication which part of the
150 * initialization if failing.
152 static int display_dram_config(void)
157 puts("RAM Configuration:\n");
159 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
160 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
161 print_size(gd->bd->bi_dram[i].size, "\n");
166 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
167 size += gd->bd->bi_dram[i].size;
170 print_size(size, "\n");
176 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
177 static int init_func_i2c(void)
180 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
186 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
188 static int arm_pci_init(void)
193 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
196 * Breathe some life into the board...
198 * Initialize a serial port as console, and carry out some hardware
201 * The first part of initialization is running from Flash memory;
202 * its main purpose is to initialize the RAM so that we
203 * can relocate the monitor code to RAM.
207 * All attempts to come up with a "common" initialization sequence
208 * that works for all boards and architectures failed: some of the
209 * requirements are just _too_ different. To get rid of the resulting
210 * mess of board dependent #ifdef'ed code we now make the whole
211 * initialization sequence configurable to the user.
213 * The requirements for any new initalization function is simple: it
214 * receives a pointer to the "global data" structure as it's only
215 * argument, and returns an integer return code, where 0 means
216 * "continue" and != 0 means "fatal error, hang the system".
218 typedef int (init_fnc_t) (void);
220 int print_cpuinfo(void);
222 void __dram_init_banksize(void)
224 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
225 gd->bd->bi_dram[0].size = gd->ram_size;
227 void dram_init_banksize(void)
228 __attribute__((weak, alias("__dram_init_banksize")));
230 init_fnc_t *init_sequence[] = {
231 #if defined(CONFIG_ARCH_CPU_INIT)
232 arch_cpu_init, /* basic arch cpu dependent setup */
234 #if defined(CONFIG_BOARD_EARLY_INIT_F)
237 timer_init, /* initialize timer */
238 #ifdef CONFIG_FSL_ESDHC
241 env_init, /* initialize environment */
242 init_baudrate, /* initialze baudrate settings */
243 serial_init, /* serial communications setup */
244 console_init_f, /* stage 1 init of console */
245 display_banner, /* say that we are here */
246 #if defined(CONFIG_DISPLAY_CPUINFO)
247 print_cpuinfo, /* display cpu info (and speed) */
249 #if defined(CONFIG_DISPLAY_BOARDINFO)
250 checkboard, /* display board info */
252 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
255 dram_init, /* configure available RAM banks */
259 void board_init_f(ulong bootflag)
262 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 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
319 addr -= (reg << 10); /* size is in kB */
320 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
321 #endif /* CONFIG_PRAM */
323 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
324 /* reserve TLB table */
327 /* round down to next 64 kB limit */
328 addr &= ~(0x10000 - 1);
331 debug("TLB table at: %08lx\n", addr);
334 /* round down to next 4 kB limit */
336 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
339 #ifdef CONFIG_FB_ADDR
340 gd->fb_base = CONFIG_FB_ADDR;
342 /* reserve memory for LCD display (always full pages) */
343 addr = lcd_setmem(addr);
345 #endif /* CONFIG_FB_ADDR */
346 #endif /* CONFIG_LCD */
349 * reserve memory for U-Boot code, data & bss
350 * round down to next 4 kB limit
355 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
357 #ifndef CONFIG_SPL_BUILD
359 * reserve memory for malloc() arena
361 addr_sp = addr - TOTAL_MALLOC_LEN;
362 debug("Reserving %dk for malloc() at: %08lx\n",
363 TOTAL_MALLOC_LEN >> 10, addr_sp);
365 * (permanently) allocate a Board Info struct
366 * and a permanent copy of the "global" data
368 addr_sp -= sizeof (bd_t);
369 bd = (bd_t *) addr_sp;
371 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
372 sizeof (bd_t), addr_sp);
374 #ifdef CONFIG_MACH_TYPE
375 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
378 addr_sp -= sizeof (gd_t);
379 id = (gd_t *) addr_sp;
380 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
381 sizeof (gd_t), addr_sp);
383 /* setup stackpointer for exeptions */
384 gd->irq_sp = addr_sp;
385 #ifdef CONFIG_USE_IRQ
386 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
387 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
388 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
390 /* leave 3 words for abort-stack */
393 /* 8-byte alignment for ABI compliance */
396 addr_sp += 128; /* leave 32 words for abort-stack */
397 gd->irq_sp = addr_sp;
400 debug("New Stack Pointer is: %08lx\n", addr_sp);
403 post_bootmode_init();
404 post_run(NULL, POST_ROM | post_bootmode_get(0));
407 gd->bd->bi_baudrate = gd->baudrate;
408 /* Ram ist board specific, so move it to board code ... */
409 dram_init_banksize();
410 display_dram_config(); /* and display it */
412 gd->relocaddr = addr;
413 gd->start_addr_sp = addr_sp;
414 gd->reloc_off = addr - _TEXT_BASE;
415 debug("relocation Offset is: %08lx\n", gd->reloc_off);
416 memcpy(id, (void *)gd, sizeof(gd_t));
418 relocate_code(addr_sp, id, addr);
420 /* NOTREACHED - relocate_code() does not return */
423 #if !defined(CONFIG_SYS_NO_FLASH)
424 static char *failed = "*** failed ***\n";
428 ************************************************************************
430 * This is the next part if the initialization sequence: we are now
431 * running from RAM and have a "normal" C environment, i. e. global
432 * data can be written, BSS has been cleared, the stack size in not
433 * that critical any more, etc.
435 ************************************************************************
438 void board_init_r(gd_t *id, ulong dest_addr)
441 #if !defined(CONFIG_SYS_NO_FLASH)
447 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
449 monitor_flash_len = _end_ofs;
454 debug("monitor flash len: %08lX\n", monitor_flash_len);
455 board_init(); /* Setup chipselects */
457 #ifdef CONFIG_SERIAL_MULTI
461 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
463 #ifdef CONFIG_LOGBUFFER
467 post_output_backlog();
470 /* The Malloc area is immediately below the monitor copy in DRAM */
471 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
472 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
474 #if !defined(CONFIG_SYS_NO_FLASH)
477 flash_size = flash_init();
478 if (flash_size > 0) {
479 # ifdef CONFIG_SYS_FLASH_CHECKSUM
480 print_size(flash_size, "");
482 * Compute and print flash CRC if flashchecksum is set to 'y'
484 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
486 s = getenv("flashchecksum");
487 if (s && (*s == 'y')) {
488 printf(" CRC: %08X", crc32(0,
489 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
493 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
494 print_size(flash_size, "\n");
495 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
502 #if defined(CONFIG_CMD_NAND)
504 nand_init(); /* go init the NAND */
507 #if defined(CONFIG_CMD_ONENAND)
511 #ifdef CONFIG_GENERIC_MMC
513 mmc_initialize(gd->bd);
516 #ifdef CONFIG_HAS_DATAFLASH
517 AT91F_DataflashInit();
518 dataflash_print_info();
521 /* initialize environment */
524 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
529 gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
531 stdio_init(); /* get the devices list going. */
535 #if defined(CONFIG_API)
540 console_init_r(); /* fully init console as a device */
542 #if defined(CONFIG_ARCH_MISC_INIT)
543 /* miscellaneous arch dependent initialisations */
546 #if defined(CONFIG_MISC_INIT_R)
547 /* miscellaneous platform dependent initialisations */
551 /* set up exceptions */
553 /* enable exceptions */
556 /* Perform network card initialisation if necessary */
557 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
558 /* XXX: this needs to be moved to board init */
559 if (getenv("ethaddr")) {
561 eth_getenv_enetaddr("ethaddr", enetaddr);
562 smc_set_mac_addr(enetaddr);
564 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
566 /* Initialize from environment */
567 load_addr = getenv_ulong("loadaddr", 16, load_addr);
568 #if defined(CONFIG_CMD_NET)
569 s = getenv("bootfile");
571 copy_filename(BootFile, s, sizeof(BootFile));
574 #ifdef BOARD_LATE_INIT
578 #ifdef CONFIG_BITBANGMII
581 #if defined(CONFIG_CMD_NET)
583 eth_initialize(gd->bd);
584 #if defined(CONFIG_RESET_PHY_R)
585 debug("Reset Ethernet PHY\n");
591 post_run(NULL, POST_RAM | post_bootmode_get(0));
594 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
596 * Export available size of memory for Linux,
597 * taking into account the protected RAM at top of memory
604 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
606 #ifdef CONFIG_LOGBUFFER
607 #ifndef CONFIG_ALT_LB_ADDR
608 /* Also take the logbuffer into account (pram is in kB) */
609 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
612 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
613 setenv("mem", (char *)memsz);
617 /* main_loop() can return to retry autoboot, if so just run it again. */
622 /* NOTREACHED - no way out of command loop except booting */
627 puts("### ERROR ### Please RESET the board ###\n");