3 * Josef Baumgartner <josef.baumgartner@telex.de>
5 * (C) Copyright 2000-2002
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #include <asm/immap.h>
35 #if defined(CONFIG_CMD_IDE)
38 #if defined(CONFIG_CMD_SCSI)
41 #if defined(CONFIG_CMD_KGDB)
44 #ifdef CONFIG_STATUS_LED
45 #include <status_led.h>
49 #if defined(CONFIG_CMD_BEDBUG)
50 #include <cmd_bedbug.h>
52 #ifdef CFG_ALLOC_DPRAM
57 #if defined(CONFIG_HARD_I2C) || \
58 defined(CONFIG_SOFT_I2C)
62 DECLARE_GLOBAL_DATA_PTR;
64 static char *failed = "*** failed ***\n";
67 extern flash_info_t flash_info[];
70 #include <environment.h>
72 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
73 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
74 defined(CFG_ENV_IS_IN_NVRAM)
75 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
77 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
80 extern ulong __init_end;
83 extern void timer_init(void);
85 #if defined(CONFIG_WATCHDOG)
86 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
87 # define WATCHDOG_DISABLE watchdog_disable
89 extern int watchdog_init(void);
90 extern int watchdog_disable(void);
92 # define INIT_FUNC_WATCHDOG_INIT /* undef */
93 # define WATCHDOG_DISABLE /* undef */
94 #endif /* CONFIG_WATCHDOG */
96 ulong monitor_flash_len;
99 * Begin and End of memory area for malloc(), and current "brk"
101 static ulong mem_malloc_start = 0;
102 static ulong mem_malloc_end = 0;
103 static ulong mem_malloc_brk = 0;
105 /************************************************************************
107 ************************************************************************
111 * The Malloc area is immediately below the monitor copy in DRAM
113 static void mem_malloc_init (void)
115 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
117 mem_malloc_end = dest_addr;
118 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
119 mem_malloc_brk = mem_malloc_start;
121 memset ((void *) mem_malloc_start,
123 mem_malloc_end - mem_malloc_start);
126 void *sbrk (ptrdiff_t increment)
128 ulong old = mem_malloc_brk;
129 ulong new = old + increment;
131 if ((new < mem_malloc_start) ||
132 (new > mem_malloc_end) ) {
135 mem_malloc_brk = new;
136 return ((void *)old);
139 char *strmhz(char *buf, long hz)
146 l = sprintf (buf, "%ld", n);
148 m = (hz % 1000000L) / 1000L;
151 sprintf (buf+l, ".%03ld", m);
157 * All attempts to come up with a "common" initialization sequence
158 * that works for all boards and architectures failed: some of the
159 * requirements are just _too_ different. To get rid of the resulting
160 * mess of board dependend #ifdef'ed code we now make the whole
161 * initialization sequence configurable to the user.
163 * The requirements for any new initalization function is simple: it
164 * receives a pointer to the "global data" structure as it's only
165 * argument, and returns an integer return code, where 0 means
166 * "continue" and != 0 means "fatal error, hang the system".
168 typedef int (init_fnc_t) (void);
170 /************************************************************************
172 ************************************************************************
173 * Some of this code should be moved into the core functions,
174 * but let's get it working (again) first...
177 static int init_baudrate (void)
179 uchar tmp[64]; /* long enough for environment variables */
180 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
182 gd->baudrate = (i > 0)
183 ? (int) simple_strtoul (tmp, NULL, 10)
188 /***********************************************************************/
190 static int init_func_ram (void)
192 int board_type = 0; /* use dummy arg */
195 if ((gd->ram_size = initdram (board_type)) > 0) {
196 print_size (gd->ram_size, "\n");
203 /***********************************************************************/
205 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
206 static int init_func_i2c (void)
209 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
215 /***********************************************************************/
217 /************************************************************************
218 * Initialization sequence *
219 ************************************************************************
222 init_fnc_t *init_sequence[] = {
231 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
235 #if defined(CFG_DRAM_TEST)
237 #endif /* CFG_DRAM_TEST */
238 INIT_FUNC_WATCHDOG_INIT
239 NULL, /* Terminate this list */
243 /************************************************************************
245 * This is the first part of the initialization sequence that is
246 * implemented in C, but still running from ROM.
248 * The main purpose is to provide a (serial) console interface as
249 * soon as possible (so we can see any error messages), and to
250 * initialize the RAM so that we can relocate the monitor code to
253 * Be aware of the restrictions: global data is read-only, BSS is not
254 * initialized, and stack space is limited to a few kB.
256 ************************************************************************
260 board_init_f (ulong bootflag)
263 ulong len, addr, addr_sp;
266 init_fnc_t **init_fnc_ptr;
270 uchar tmp[64]; /* long enough for environment variables */
273 /* Pointer is writable since we allocated a register for it */
274 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
275 /* compiler optimization barrier needed for GCC >= 3.4 */
276 __asm__ __volatile__("": : :"memory");
278 /* Clear initial global data */
279 memset ((void *) gd, 0, sizeof (gd_t));
281 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
282 if ((*init_fnc_ptr)() != 0) {
288 * Now that we have DRAM mapped and working, we can
289 * relocate the code and continue running from DRAM.
291 * Reserve memory at end of RAM for (top down in that order):
295 * - board info struct
297 len = (ulong)&_end - CFG_MONITOR_BASE;
299 addr = CFG_SDRAM_BASE + gd->ram_size;
301 #ifdef CONFIG_LOGBUFFER
302 /* reserve kernel log buffer */
303 addr -= (LOGBUFF_RESERVE);
304 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
309 * reserve protected RAM
311 i = getenv_r ("pram", tmp, sizeof (tmp));
312 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
313 addr -= (reg << 10); /* size is in kB */
314 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
315 #endif /* CONFIG_PRAM */
317 /* round down to next 4 kB limit */
319 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
322 /* reserve memory for LCD display (always full pages) */
323 addr = lcd_setmem (addr);
325 #endif /* CONFIG_LCD */
328 * reserve memory for U-Boot code, data & bss
329 * round down to next 4 kB limit
334 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
337 * reserve memory for malloc() arena
339 addr_sp = addr - TOTAL_MALLOC_LEN;
340 debug ("Reserving %dk for malloc() at: %08lx\n",
341 TOTAL_MALLOC_LEN >> 10, addr_sp);
344 * (permanently) allocate a Board Info struct
345 * and a permanent copy of the "global" data
347 addr_sp -= sizeof (bd_t);
348 bd = (bd_t *) addr_sp;
350 debug ("Reserving %d Bytes for Board Info at: %08lx\n",
351 sizeof (bd_t), addr_sp);
352 addr_sp -= sizeof (gd_t);
353 id = (gd_t *) addr_sp;
354 debug ("Reserving %d Bytes for Global Data at: %08lx\n",
355 sizeof (gd_t), addr_sp);
357 /* Reserve memory for boot params. */
358 addr_sp -= CFG_BOOTPARAMS_LEN;
359 bd->bi_boot_params = addr_sp;
360 debug ("Reserving %dk for boot parameters at: %08lx\n",
361 CFG_BOOTPARAMS_LEN >> 10, addr_sp);
364 * Finally, we set up a new (bigger) stack.
366 * Leave some safety gap for SP, force alignment on 16 byte boundary
367 * Clear initial stack frame
372 paddr = (ulong *)addr_sp;
375 addr_sp = (ulong)paddr;
377 debug ("Stack Pointer at: %08lx\n", addr_sp);
380 * Save local variables to board info struct
382 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
383 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
384 #ifdef CFG_INIT_RAM_ADDR
385 bd->bi_sramstart = CFG_INIT_RAM_ADDR; /* start of SRAM memory */
386 bd->bi_sramsize = CFG_INIT_RAM_END; /* size of SRAM memory */
388 bd->bi_mbar_base = CFG_MBAR; /* base of internal registers */
390 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
393 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
394 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
396 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
398 #ifdef CONFIG_EXTRA_CLOCK
399 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
400 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
401 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
403 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
406 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
407 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
413 post_bootmode_init();
414 post_run (NULL, POST_ROM | post_bootmode_get(0));
419 memcpy (id, (void *)gd, sizeof (gd_t));
421 debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
422 relocate_code (addr_sp, id, addr);
424 /* NOTREACHED - jump_to_ram() does not return */
427 /************************************************************************
429 * This is the next part if the initialization sequence: we are now
430 * running from RAM and have a "normal" C environment, i. e. global
431 * data can be written, BSS has been cleared, the stack size in not
432 * that critical any more, etc.
434 ************************************************************************
436 void board_init_r (gd_t *id, ulong dest_addr)
442 extern void malloc_bin_reloc (void);
444 #ifndef CFG_ENV_IS_NOWHERE
445 extern char * env_name_spec;
450 gd = id; /* initialize RAM version of global data */
453 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
455 #ifdef CONFIG_SERIAL_MULTI
459 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
463 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
465 monitor_flash_len = (ulong)&__init_end - dest_addr;
468 * We have to relocate the command table manually
470 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
472 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
474 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
475 cmdtp->name, (ulong) (cmdtp->cmd), addr);
478 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
480 addr = (ulong)(cmdtp->name) + gd->reloc_off;
481 cmdtp->name = (char *)addr;
484 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
485 cmdtp->usage = (char *)addr;
489 addr = (ulong)(cmdtp->help) + gd->reloc_off;
490 cmdtp->help = (char *)addr;
494 /* there are some other pointer constants we must deal with */
495 #ifndef CFG_ENV_IS_NOWHERE
496 env_name_spec += gd->reloc_off;
501 #ifdef CONFIG_LOGBUFFER
502 logbuff_init_ptrs ();
505 post_output_backlog ();
511 /* instruction cache enabled in cpu_init_f() for faster relocation */
512 icache_enable (); /* it's time to enable the instruction cache */
516 * Setup trap handlers
518 trap_init (CFG_SDRAM_BASE);
520 #if !defined(CFG_NO_FLASH)
523 if ((flash_size = flash_init ()) > 0) {
524 # ifdef CFG_FLASH_CHECKSUM
525 print_size (flash_size, "");
527 * Compute and print flash CRC if flashchecksum is set to 'y'
529 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
531 s = getenv ("flashchecksum");
532 if (s && (*s == 'y')) {
533 printf (" CRC: %08lX",
535 (const unsigned char *) CFG_FLASH_BASE,
540 # else /* !CFG_FLASH_CHECKSUM */
541 print_size (flash_size, "\n");
542 # endif /* CFG_FLASH_CHECKSUM */
548 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
549 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
550 bd->bi_flashoffset = 0;
551 #else /* CFG_NO_FLASH */
552 bd->bi_flashsize = 0;
553 bd->bi_flashstart = 0;
554 bd->bi_flashoffset = 0;
555 #endif /* !CFG_NO_FLASH */
559 /* initialize higher level parts of CPU like time base and timers */
564 /* initialize malloc() area */
569 # if !defined(CFG_ENV_IS_IN_EEPROM)
575 /* relocate environment function pointers etc. */
579 * Fill in missing fields of bd_info.
580 * We do this here, where we have "normal" access to the
581 * environment; we used to do this still running from ROM,
582 * where had to use getenv_r(), which can be pretty slow when
583 * the environment is in EEPROM.
585 s = getenv ("ethaddr");
586 for (i = 0; i < 6; ++i) {
587 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
589 s = (*e) ? e + 1 : e;
591 #ifdef CONFIG_HAS_ETH1
592 /* handle the 2nd ethernet address */
594 s = getenv ("eth1addr");
595 for (i = 0; i < 6; ++i) {
596 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
598 s = (*e) ? e + 1 : e;
601 #ifdef CONFIG_HAS_ETH2
602 /* handle the 3rd ethernet address */
604 s = getenv ("eth2addr");
605 for (i = 0; i < 6; ++i) {
606 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
608 s = (*e) ? e + 1 : e;
612 #ifdef CONFIG_HAS_ETH3
613 /* handle 4th ethernet address */
614 s = getenv("eth3addr");
615 for (i = 0; i < 6; ++i) {
616 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
618 s = (*e) ? e + 1 : e;
623 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
627 #if defined(CONFIG_PCI)
629 * Do pci configuration
634 /** leave this here (after malloc(), environment and PCI are working) **/
635 /* Initialize devices */
638 /* Initialize the jump table for applications */
641 /* Initialize the console (after the relocation and devices init) */
644 #if defined(CONFIG_MISC_INIT_R)
645 /* miscellaneous platform dependent initialisations */
649 #if defined(CONFIG_CMD_KGDB)
655 debug ("U-Boot relocated to %08lx\n", dest_addr);
662 /* Must happen after interrupts are initialized since
663 * an irq handler gets installed
667 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
668 serial_buffered_init();
671 #ifdef CONFIG_STATUS_LED
672 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
679 /* Insert function pointers now that we have relocated the code */
681 /* Initialize from environment */
682 if ((s = getenv ("loadaddr")) != NULL) {
683 load_addr = simple_strtoul (s, NULL, 16);
685 #if defined(CONFIG_CMD_NET)
686 if ((s = getenv ("bootfile")) != NULL) {
687 copy_filename (BootFile, s, sizeof (BootFile));
693 #if defined(CONFIG_CMD_DOC)
699 #if defined(CONFIG_CMD_NAND)
702 nand_init(); /* go init the NAND */
705 #if defined(CONFIG_CMD_NET)
707 #if defined(FEC_ENET)
710 #if defined(CONFIG_NET_MULTI)
717 post_run (NULL, POST_RAM | post_bootmode_get(0));
720 #if defined(CONFIG_CMD_PCMCIA) \
721 && !defined(CONFIG_CMD_IDE)
727 #if defined(CONFIG_CMD_IDE)
733 #ifdef CONFIG_LAST_STAGE_INIT
736 * Some parts can be only initialized if all others (like
737 * Interrupts) are up and running (i.e. the PC-style ISA
743 #if defined(CONFIG_CMD_BEDBUG)
748 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
750 * Export available size of memory for Linux,
751 * taking into account the protected RAM at top of memory
759 if ((s = getenv ("pram")) != NULL) {
760 pram = simple_strtoul (s, NULL, 10);
767 #ifdef CONFIG_LOGBUFFER
768 /* Also take the logbuffer into account (pram is in kB) */
769 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
771 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
772 setenv ("mem", memsz);
776 #ifdef CONFIG_MODEM_SUPPORT
778 extern int do_mdm_init;
779 do_mdm_init = gd->do_mdm_init;
783 #ifdef CONFIG_WATCHDOG
784 /* disable watchdog if environment is set */
785 if ((s = getenv ("watchdog")) != NULL) {
786 if (strncmp (s, "off", 3) == 0) {
790 #endif /* CONFIG_WATCHDOG*/
793 /* Initialization complete - start the monitor */
795 /* main_loop() can return to retry autoboot, if so just run it again. */
801 /* NOTREACHED - no way out of command loop except booting */
807 puts ("### ERROR ### Please RESET the board ###\n");