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)
66 DECLARE_GLOBAL_DATA_PTR;
68 static char *failed = "*** failed ***\n";
71 extern flash_info_t flash_info[];
74 #include <environment.h>
76 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
77 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
78 defined(CFG_ENV_IS_IN_NVRAM)
79 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
81 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
84 extern ulong __init_end;
87 extern void timer_init(void);
89 #if defined(CONFIG_WATCHDOG)
90 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
91 # define WATCHDOG_DISABLE watchdog_disable
93 extern int watchdog_init(void);
94 extern int watchdog_disable(void);
96 # define INIT_FUNC_WATCHDOG_INIT /* undef */
97 # define WATCHDOG_DISABLE /* undef */
98 #endif /* CONFIG_WATCHDOG */
100 ulong monitor_flash_len;
103 * Begin and End of memory area for malloc(), and current "brk"
105 static ulong mem_malloc_start = 0;
106 static ulong mem_malloc_end = 0;
107 static ulong mem_malloc_brk = 0;
109 /************************************************************************
111 ************************************************************************
115 * The Malloc area is immediately below the monitor copy in DRAM
117 static void mem_malloc_init (void)
119 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
121 mem_malloc_end = dest_addr;
122 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
123 mem_malloc_brk = mem_malloc_start;
125 memset ((void *) mem_malloc_start,
127 mem_malloc_end - mem_malloc_start);
130 void *sbrk (ptrdiff_t increment)
132 ulong old = mem_malloc_brk;
133 ulong new = old + increment;
135 if ((new < mem_malloc_start) ||
136 (new > mem_malloc_end) ) {
139 mem_malloc_brk = new;
140 return ((void *)old);
143 char *strmhz(char *buf, long hz)
150 l = sprintf (buf, "%ld", n);
152 m = (hz % 1000000L) / 1000L;
155 sprintf (buf+l, ".%03ld", m);
161 * All attempts to come up with a "common" initialization sequence
162 * that works for all boards and architectures failed: some of the
163 * requirements are just _too_ different. To get rid of the resulting
164 * mess of board dependend #ifdef'ed code we now make the whole
165 * initialization sequence configurable to the user.
167 * The requirements for any new initalization function is simple: it
168 * receives a pointer to the "global data" structure as it's only
169 * argument, and returns an integer return code, where 0 means
170 * "continue" and != 0 means "fatal error, hang the system".
172 typedef int (init_fnc_t) (void);
174 /************************************************************************
176 ************************************************************************
177 * Some of this code should be moved into the core functions,
178 * but let's get it working (again) first...
181 static int init_baudrate (void)
183 char tmp[64]; /* long enough for environment variables */
184 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
186 gd->baudrate = (i > 0)
187 ? (int) simple_strtoul (tmp, NULL, 10)
192 /***********************************************************************/
194 static int init_func_ram (void)
196 int board_type = 0; /* use dummy arg */
199 if ((gd->ram_size = initdram (board_type)) > 0) {
200 print_size (gd->ram_size, "\n");
207 /***********************************************************************/
209 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
210 static int init_func_i2c (void)
213 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
219 #if defined(CONFIG_HARD_SPI)
220 static int init_func_spi (void)
229 /***********************************************************************/
231 /************************************************************************
232 * Initialization sequence *
233 ************************************************************************
236 init_fnc_t *init_sequence[] = {
245 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
248 #if defined(CONFIG_HARD_SPI)
252 #if defined(CFG_DRAM_TEST)
254 #endif /* CFG_DRAM_TEST */
255 INIT_FUNC_WATCHDOG_INIT
256 NULL, /* Terminate this list */
260 /************************************************************************
262 * This is the first part of the initialization sequence that is
263 * implemented in C, but still running from ROM.
265 * The main purpose is to provide a (serial) console interface as
266 * soon as possible (so we can see any error messages), and to
267 * initialize the RAM so that we can relocate the monitor code to
270 * Be aware of the restrictions: global data is read-only, BSS is not
271 * initialized, and stack space is limited to a few kB.
273 ************************************************************************
277 board_init_f (ulong bootflag)
280 ulong len, addr, addr_sp;
283 init_fnc_t **init_fnc_ptr;
287 char tmp[64]; /* long enough for environment variables */
290 /* Pointer is writable since we allocated a register for it */
291 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
292 /* compiler optimization barrier needed for GCC >= 3.4 */
293 __asm__ __volatile__("": : :"memory");
295 /* Clear initial global data */
296 memset ((void *) gd, 0, sizeof (gd_t));
298 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
299 if ((*init_fnc_ptr)() != 0) {
305 * Now that we have DRAM mapped and working, we can
306 * relocate the code and continue running from DRAM.
308 * Reserve memory at end of RAM for (top down in that order):
312 * - board info struct
314 len = (ulong)&_end - CFG_MONITOR_BASE;
316 addr = CFG_SDRAM_BASE + gd->ram_size;
318 #ifdef CONFIG_LOGBUFFER
319 /* reserve kernel log buffer */
320 addr -= (LOGBUFF_RESERVE);
321 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
326 * reserve protected RAM
328 i = getenv_r ("pram", tmp, sizeof (tmp));
329 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
330 addr -= (reg << 10); /* size is in kB */
331 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
332 #endif /* CONFIG_PRAM */
334 /* round down to next 4 kB limit */
336 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
339 /* reserve memory for LCD display (always full pages) */
340 addr = lcd_setmem (addr);
342 #endif /* CONFIG_LCD */
345 * reserve memory for U-Boot code, data & bss
346 * round down to next 4 kB limit
351 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
354 * reserve memory for malloc() arena
356 addr_sp = addr - TOTAL_MALLOC_LEN;
357 debug ("Reserving %dk for malloc() at: %08lx\n",
358 TOTAL_MALLOC_LEN >> 10, addr_sp);
361 * (permanently) allocate a Board Info struct
362 * and a permanent copy of the "global" data
364 addr_sp -= sizeof (bd_t);
365 bd = (bd_t *) addr_sp;
367 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
368 sizeof (bd_t), addr_sp);
369 addr_sp -= sizeof (gd_t);
370 id = (gd_t *) addr_sp;
371 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
372 sizeof (gd_t), addr_sp);
374 /* Reserve memory for boot params. */
375 addr_sp -= CFG_BOOTPARAMS_LEN;
376 bd->bi_boot_params = addr_sp;
377 debug ("Reserving %dk for boot parameters at: %08lx\n",
378 CFG_BOOTPARAMS_LEN >> 10, addr_sp);
381 * Finally, we set up a new (bigger) stack.
383 * Leave some safety gap for SP, force alignment on 16 byte boundary
384 * Clear initial stack frame
389 paddr = (ulong *)addr_sp;
392 addr_sp = (ulong)paddr;
394 debug ("Stack Pointer at: %08lx\n", addr_sp);
397 * Save local variables to board info struct
399 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
400 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
401 #ifdef CFG_INIT_RAM_ADDR
402 bd->bi_sramstart = CFG_INIT_RAM_ADDR; /* start of SRAM memory */
403 bd->bi_sramsize = CFG_INIT_RAM_END; /* size of SRAM memory */
405 bd->bi_mbar_base = CFG_MBAR; /* base of internal registers */
407 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
410 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
411 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
413 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
415 #ifdef CONFIG_EXTRA_CLOCK
416 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
417 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
418 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
420 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
423 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
424 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
430 post_bootmode_init();
431 post_run (NULL, POST_ROM | post_bootmode_get(0));
436 memcpy (id, (void *)gd, sizeof (gd_t));
438 debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
439 relocate_code (addr_sp, id, addr);
441 /* NOTREACHED - jump_to_ram() does not return */
444 /************************************************************************
446 * This is the next part if the initialization sequence: we are now
447 * running from RAM and have a "normal" C environment, i. e. global
448 * data can be written, BSS has been cleared, the stack size in not
449 * that critical any more, etc.
451 ************************************************************************
453 void board_init_r (gd_t *id, ulong dest_addr)
459 extern void malloc_bin_reloc (void);
461 #ifndef CFG_ENV_IS_NOWHERE
462 extern char * env_name_spec;
467 gd = id; /* initialize RAM version of global data */
470 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
472 #ifdef CONFIG_SERIAL_MULTI
476 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
480 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
482 monitor_flash_len = (ulong)&__init_end - dest_addr;
485 * We have to relocate the command table manually
487 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
489 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
491 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
492 cmdtp->name, (ulong) (cmdtp->cmd), addr);
495 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
497 addr = (ulong)(cmdtp->name) + gd->reloc_off;
498 cmdtp->name = (char *)addr;
501 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
502 cmdtp->usage = (char *)addr;
506 addr = (ulong)(cmdtp->help) + gd->reloc_off;
507 cmdtp->help = (char *)addr;
511 /* there are some other pointer constants we must deal with */
512 #ifndef CFG_ENV_IS_NOWHERE
513 env_name_spec += gd->reloc_off;
518 #ifdef CONFIG_LOGBUFFER
519 logbuff_init_ptrs ();
522 post_output_backlog ();
528 /* instruction cache enabled in cpu_init_f() for faster relocation */
529 icache_enable (); /* it's time to enable the instruction cache */
533 * Setup trap handlers
535 trap_init (CFG_SDRAM_BASE);
537 #if !defined(CFG_NO_FLASH)
540 if ((flash_size = flash_init ()) > 0) {
541 # ifdef CFG_FLASH_CHECKSUM
542 print_size (flash_size, "");
544 * Compute and print flash CRC if flashchecksum is set to 'y'
546 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
548 s = getenv ("flashchecksum");
549 if (s && (*s == 'y')) {
550 printf (" CRC: %08lX",
552 (const unsigned char *) CFG_FLASH_BASE,
557 # else /* !CFG_FLASH_CHECKSUM */
558 print_size (flash_size, "\n");
559 # endif /* CFG_FLASH_CHECKSUM */
565 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
566 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
567 bd->bi_flashoffset = 0;
568 #else /* CFG_NO_FLASH */
569 bd->bi_flashsize = 0;
570 bd->bi_flashstart = 0;
571 bd->bi_flashoffset = 0;
572 #endif /* !CFG_NO_FLASH */
576 /* initialize higher level parts of CPU like time base and timers */
581 /* initialize malloc() area */
586 # if !defined(CFG_ENV_IS_IN_EEPROM)
592 /* relocate environment function pointers etc. */
596 * Fill in missing fields of bd_info.
597 * We do this here, where we have "normal" access to the
598 * environment; we used to do this still running from ROM,
599 * where had to use getenv_r(), which can be pretty slow when
600 * the environment is in EEPROM.
602 s = getenv ("ethaddr");
603 for (i = 0; i < 6; ++i) {
604 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
606 s = (*e) ? e + 1 : e;
608 #ifdef CONFIG_HAS_ETH1
609 /* handle the 2nd ethernet address */
611 s = getenv ("eth1addr");
612 for (i = 0; i < 6; ++i) {
613 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
615 s = (*e) ? e + 1 : e;
618 #ifdef CONFIG_HAS_ETH2
619 /* handle the 3rd ethernet address */
621 s = getenv ("eth2addr");
622 for (i = 0; i < 6; ++i) {
623 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
625 s = (*e) ? e + 1 : e;
629 #ifdef CONFIG_HAS_ETH3
630 /* handle 4th ethernet address */
631 s = getenv("eth3addr");
632 for (i = 0; i < 6; ++i) {
633 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
635 s = (*e) ? e + 1 : e;
640 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
644 #if defined(CONFIG_PCI)
646 * Do pci configuration
651 /** leave this here (after malloc(), environment and PCI are working) **/
652 /* Initialize devices */
655 /* Initialize the jump table for applications */
658 /* Initialize the console (after the relocation and devices init) */
661 #if defined(CONFIG_MISC_INIT_R)
662 /* miscellaneous platform dependent initialisations */
666 #if defined(CONFIG_CMD_KGDB)
672 debug ("U-Boot relocated to %08lx\n", dest_addr);
679 /* Must happen after interrupts are initialized since
680 * an irq handler gets installed
684 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
685 serial_buffered_init();
688 #ifdef CONFIG_STATUS_LED
689 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
696 /* Insert function pointers now that we have relocated the code */
698 /* Initialize from environment */
699 if ((s = getenv ("loadaddr")) != NULL) {
700 load_addr = simple_strtoul (s, NULL, 16);
702 #if defined(CONFIG_CMD_NET)
703 if ((s = getenv ("bootfile")) != NULL) {
704 copy_filename (BootFile, s, sizeof (BootFile));
710 #if defined(CONFIG_CMD_DOC)
716 #if defined(CONFIG_CMD_NAND)
719 nand_init(); /* go init the NAND */
722 #if defined(CONFIG_CMD_NET)
724 #if defined(FEC_ENET)
727 #if defined(CONFIG_NET_MULTI)
734 post_run (NULL, POST_RAM | post_bootmode_get(0));
737 #if defined(CONFIG_CMD_PCMCIA) \
738 && !defined(CONFIG_CMD_IDE)
744 #if defined(CONFIG_CMD_IDE)
750 #ifdef CONFIG_LAST_STAGE_INIT
753 * Some parts can be only initialized if all others (like
754 * Interrupts) are up and running (i.e. the PC-style ISA
760 #if defined(CONFIG_CMD_BEDBUG)
765 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
767 * Export available size of memory for Linux,
768 * taking into account the protected RAM at top of memory
776 if ((s = getenv ("pram")) != NULL) {
777 pram = simple_strtoul (s, NULL, 10);
784 #ifdef CONFIG_LOGBUFFER
785 /* Also take the logbuffer into account (pram is in kB) */
786 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
788 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
789 setenv ("mem", memsz);
793 #ifdef CONFIG_MODEM_SUPPORT
795 extern int do_mdm_init;
796 do_mdm_init = gd->do_mdm_init;
800 #ifdef CONFIG_WATCHDOG
801 /* disable watchdog if environment is set */
802 if ((s = getenv ("watchdog")) != NULL) {
803 if (strncmp (s, "off", 3) == 0) {
807 #endif /* CONFIG_WATCHDOG*/
810 /* Initialization complete - start the monitor */
812 /* main_loop() can return to retry autoboot, if so just run it again. */
818 /* NOTREACHED - no way out of command loop except booting */
824 puts ("### ERROR ### Please RESET the board ###\n");