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 CONFIG_SYS_ALLOC_DPRAM
57 #if defined(CONFIG_HARD_I2C) || \
58 defined(CONFIG_SOFT_I2C)
68 DECLARE_GLOBAL_DATA_PTR;
70 static char *failed = "*** failed ***\n";
73 extern flash_info_t flash_info[];
76 #include <environment.h>
78 #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
79 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
80 defined(CONFIG_ENV_IS_IN_NVRAM)
81 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
83 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
86 extern ulong __init_end;
89 extern void timer_init(void);
91 #if defined(CONFIG_WATCHDOG)
92 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
93 # define WATCHDOG_DISABLE watchdog_disable
95 extern int watchdog_init(void);
96 extern int watchdog_disable(void);
98 # define INIT_FUNC_WATCHDOG_INIT /* undef */
99 # define WATCHDOG_DISABLE /* undef */
100 #endif /* CONFIG_WATCHDOG */
102 ulong monitor_flash_len;
105 * Begin and End of memory area for malloc(), and current "brk"
107 static ulong mem_malloc_start = 0;
108 static ulong mem_malloc_end = 0;
109 static ulong mem_malloc_brk = 0;
111 /************************************************************************
113 ************************************************************************
117 * The Malloc area is immediately below the monitor copy in DRAM
119 static void mem_malloc_init (void)
121 ulong dest_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
123 mem_malloc_end = dest_addr;
124 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
125 mem_malloc_brk = mem_malloc_start;
127 memset ((void *) mem_malloc_start,
129 mem_malloc_end - mem_malloc_start);
132 void *sbrk (ptrdiff_t increment)
134 ulong old = mem_malloc_brk;
135 ulong new = old + increment;
137 if ((new < mem_malloc_start) ||
138 (new > mem_malloc_end) ) {
141 mem_malloc_brk = new;
142 return ((void *)old);
146 * All attempts to come up with a "common" initialization sequence
147 * that works for all boards and architectures failed: some of the
148 * requirements are just _too_ different. To get rid of the resulting
149 * mess of board dependend #ifdef'ed code we now make the whole
150 * initialization sequence configurable to the user.
152 * The requirements for any new initalization function is simple: it
153 * receives a pointer to the "global data" structure as it's only
154 * argument, and returns an integer return code, where 0 means
155 * "continue" and != 0 means "fatal error, hang the system".
157 typedef int (init_fnc_t) (void);
159 /************************************************************************
161 ************************************************************************
162 * Some of this code should be moved into the core functions,
163 * but let's get it working (again) first...
166 static int init_baudrate (void)
168 char tmp[64]; /* long enough for environment variables */
169 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
171 gd->baudrate = (i > 0)
172 ? (int) simple_strtoul (tmp, NULL, 10)
177 /***********************************************************************/
179 static int init_func_ram (void)
181 int board_type = 0; /* use dummy arg */
184 if ((gd->ram_size = initdram (board_type)) > 0) {
185 print_size (gd->ram_size, "\n");
192 /***********************************************************************/
194 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
195 static int init_func_i2c (void)
198 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
204 #if defined(CONFIG_HARD_SPI)
205 static int init_func_spi (void)
214 /***********************************************************************/
216 /************************************************************************
217 * Initialization sequence *
218 ************************************************************************
221 init_fnc_t *init_sequence[] = {
230 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
233 #if defined(CONFIG_HARD_SPI)
237 #if defined(CONFIG_SYS_DRAM_TEST)
239 #endif /* CONFIG_SYS_DRAM_TEST */
240 INIT_FUNC_WATCHDOG_INIT
241 NULL, /* Terminate this list */
245 /************************************************************************
247 * This is the first part of the initialization sequence that is
248 * implemented in C, but still running from ROM.
250 * The main purpose is to provide a (serial) console interface as
251 * soon as possible (so we can see any error messages), and to
252 * initialize the RAM so that we can relocate the monitor code to
255 * Be aware of the restrictions: global data is read-only, BSS is not
256 * initialized, and stack space is limited to a few kB.
258 ************************************************************************
262 board_init_f (ulong bootflag)
265 ulong len, addr, addr_sp;
268 init_fnc_t **init_fnc_ptr;
272 char tmp[64]; /* long enough for environment variables */
275 /* Pointer is writable since we allocated a register for it */
276 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
277 /* compiler optimization barrier needed for GCC >= 3.4 */
278 __asm__ __volatile__("": : :"memory");
280 /* Clear initial global data */
281 memset ((void *) gd, 0, sizeof (gd_t));
283 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
284 if ((*init_fnc_ptr)() != 0) {
290 * Now that we have DRAM mapped and working, we can
291 * relocate the code and continue running from DRAM.
293 * Reserve memory at end of RAM for (top down in that order):
297 * - board info struct
299 len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
301 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
303 #ifdef CONFIG_LOGBUFFER
304 /* reserve kernel log buffer */
305 addr -= (LOGBUFF_RESERVE);
306 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
311 * reserve protected RAM
313 i = getenv_r ("pram", tmp, sizeof (tmp));
314 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
315 addr -= (reg << 10); /* size is in kB */
316 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
317 #endif /* CONFIG_PRAM */
319 /* round down to next 4 kB limit */
321 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
324 /* reserve memory for LCD display (always full pages) */
325 addr = lcd_setmem (addr);
327 #endif /* CONFIG_LCD */
330 * reserve memory for U-Boot code, data & bss
331 * round down to next 4 kB limit
336 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
339 * reserve memory for malloc() arena
341 addr_sp = addr - TOTAL_MALLOC_LEN;
342 debug ("Reserving %dk for malloc() at: %08lx\n",
343 TOTAL_MALLOC_LEN >> 10, addr_sp);
346 * (permanently) allocate a Board Info struct
347 * and a permanent copy of the "global" data
349 addr_sp -= sizeof (bd_t);
350 bd = (bd_t *) addr_sp;
352 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
353 sizeof (bd_t), addr_sp);
354 addr_sp -= sizeof (gd_t);
355 id = (gd_t *) addr_sp;
356 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
357 sizeof (gd_t), addr_sp);
359 /* Reserve memory for boot params. */
360 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
361 bd->bi_boot_params = addr_sp;
362 debug ("Reserving %dk for boot parameters at: %08lx\n",
363 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
366 * Finally, we set up a new (bigger) stack.
368 * Leave some safety gap for SP, force alignment on 16 byte boundary
369 * Clear initial stack frame
374 paddr = (ulong *)addr_sp;
377 addr_sp = (ulong)paddr;
379 debug ("Stack Pointer at: %08lx\n", addr_sp);
382 * Save local variables to board info struct
384 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
385 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
386 #ifdef CONFIG_SYS_INIT_RAM_ADDR
387 bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
388 bd->bi_sramsize = CONFIG_SYS_INIT_RAM_END; /* size of SRAM memory */
390 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
392 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
395 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
396 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
398 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
400 #ifdef CONFIG_EXTRA_CLOCK
401 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
402 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
403 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
405 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
407 #ifdef CONFIG_SYS_EXTBDINFO
408 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
409 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
415 post_bootmode_init();
416 post_run (NULL, POST_ROM | post_bootmode_get(0));
421 memcpy (id, (void *)gd, sizeof (gd_t));
423 debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
424 relocate_code (addr_sp, id, addr);
426 /* NOTREACHED - jump_to_ram() does not return */
429 /************************************************************************
431 * This is the next part if the initialization sequence: we are now
432 * running from RAM and have a "normal" C environment, i. e. global
433 * data can be written, BSS has been cleared, the stack size in not
434 * that critical any more, etc.
436 ************************************************************************
438 void board_init_r (gd_t *id, ulong dest_addr)
444 extern void malloc_bin_reloc (void);
446 #ifndef CONFIG_ENV_IS_NOWHERE
447 extern char * env_name_spec;
449 #ifndef CONFIG_SYS_NO_FLASH
452 gd = id; /* initialize RAM version of global data */
455 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
457 #ifdef CONFIG_SERIAL_MULTI
461 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
465 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
467 monitor_flash_len = (ulong)&__init_end - dest_addr;
470 * We have to relocate the command table manually
472 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
474 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
476 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
477 cmdtp->name, (ulong) (cmdtp->cmd), addr);
480 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
482 addr = (ulong)(cmdtp->name) + gd->reloc_off;
483 cmdtp->name = (char *)addr;
486 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
487 cmdtp->usage = (char *)addr;
489 #ifdef CONFIG_SYS_LONGHELP
491 addr = (ulong)(cmdtp->help) + gd->reloc_off;
492 cmdtp->help = (char *)addr;
496 /* there are some other pointer constants we must deal with */
497 #ifndef CONFIG_ENV_IS_NOWHERE
498 env_name_spec += gd->reloc_off;
503 #ifdef CONFIG_LOGBUFFER
504 logbuff_init_ptrs ();
507 post_output_backlog ();
513 /* instruction cache enabled in cpu_init_f() for faster relocation */
514 icache_enable (); /* it's time to enable the instruction cache */
518 * Setup trap handlers
520 trap_init (CONFIG_SYS_SDRAM_BASE);
522 #if !defined(CONFIG_SYS_NO_FLASH)
525 if ((flash_size = flash_init ()) > 0) {
526 # ifdef CONFIG_SYS_FLASH_CHECKSUM
527 print_size (flash_size, "");
529 * Compute and print flash CRC if flashchecksum is set to 'y'
531 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
533 s = getenv ("flashchecksum");
534 if (s && (*s == 'y')) {
535 printf (" CRC: %08lX",
537 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
542 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
543 print_size (flash_size, "\n");
544 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
550 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
551 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
552 bd->bi_flashoffset = 0;
553 #else /* CONFIG_SYS_NO_FLASH */
554 bd->bi_flashsize = 0;
555 bd->bi_flashstart = 0;
556 bd->bi_flashoffset = 0;
557 #endif /* !CONFIG_SYS_NO_FLASH */
561 /* initialize higher level parts of CPU like time base and timers */
566 /* initialize malloc() area */
571 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
577 /* relocate environment function pointers etc. */
581 * Fill in missing fields of bd_info.
582 * We do this here, where we have "normal" access to the
583 * environment; we used to do this still running from ROM,
584 * where had to use getenv_r(), which can be pretty slow when
585 * the environment is in EEPROM.
587 s = getenv ("ethaddr");
588 for (i = 0; i < 6; ++i) {
589 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
591 s = (*e) ? e + 1 : e;
593 #ifdef CONFIG_HAS_ETH1
594 /* handle the 2nd ethernet address */
596 s = getenv ("eth1addr");
597 for (i = 0; i < 6; ++i) {
598 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
600 s = (*e) ? e + 1 : e;
603 #ifdef CONFIG_HAS_ETH2
604 /* handle the 3rd ethernet address */
606 s = getenv ("eth2addr");
607 for (i = 0; i < 6; ++i) {
608 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
610 s = (*e) ? e + 1 : e;
614 #ifdef CONFIG_HAS_ETH3
615 /* handle 4th ethernet address */
616 s = getenv("eth3addr");
617 for (i = 0; i < 6; ++i) {
618 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
620 s = (*e) ? e + 1 : e;
625 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
629 #if defined(CONFIG_PCI)
631 * Do pci configuration
636 /** leave this here (after malloc(), environment and PCI are working) **/
637 /* Initialize devices */
640 /* Initialize the jump table for applications */
643 /* Initialize the console (after the relocation and devices init) */
646 #if defined(CONFIG_MISC_INIT_R)
647 /* miscellaneous platform dependent initialisations */
651 #if defined(CONFIG_CMD_KGDB)
657 debug ("U-Boot relocated to %08lx\n", dest_addr);
664 /* Must happen after interrupts are initialized since
665 * an irq handler gets installed
669 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
670 serial_buffered_init();
673 #ifdef CONFIG_STATUS_LED
674 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
681 /* Insert function pointers now that we have relocated the code */
683 /* Initialize from environment */
684 if ((s = getenv ("loadaddr")) != NULL) {
685 load_addr = simple_strtoul (s, NULL, 16);
687 #if defined(CONFIG_CMD_NET)
688 if ((s = getenv ("bootfile")) != NULL) {
689 copy_filename (BootFile, s, sizeof (BootFile));
695 #if defined(CONFIG_CMD_DOC)
701 #if defined(CONFIG_CMD_NAND)
704 nand_init(); /* go init the NAND */
707 #if defined(CONFIG_CMD_NET)
709 #if defined(FEC_ENET)
712 #if defined(CONFIG_NET_MULTI)
719 post_run (NULL, POST_RAM | post_bootmode_get(0));
722 #if defined(CONFIG_CMD_PCMCIA) \
723 && !defined(CONFIG_CMD_IDE)
729 #if defined(CONFIG_CMD_IDE)
735 #ifdef CONFIG_LAST_STAGE_INIT
738 * Some parts can be only initialized if all others (like
739 * Interrupts) are up and running (i.e. the PC-style ISA
745 #if defined(CONFIG_CMD_BEDBUG)
750 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
752 * Export available size of memory for Linux,
753 * taking into account the protected RAM at top of memory
761 if ((s = getenv ("pram")) != NULL) {
762 pram = simple_strtoul (s, NULL, 10);
769 #ifdef CONFIG_LOGBUFFER
770 /* Also take the logbuffer into account (pram is in kB) */
771 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
773 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
774 setenv ("mem", memsz);
778 #ifdef CONFIG_MODEM_SUPPORT
780 extern int do_mdm_init;
781 do_mdm_init = gd->do_mdm_init;
785 #ifdef CONFIG_WATCHDOG
786 /* disable watchdog if environment is set */
787 if ((s = getenv ("watchdog")) != NULL) {
788 if (strncmp (s, "off", 3) == 0) {
792 #endif /* CONFIG_WATCHDOG*/
795 /* Initialization complete - start the monitor */
797 /* main_loop() can return to retry autoboot, if so just run it again. */
803 /* NOTREACHED - no way out of command loop except booting */
809 puts ("### ERROR ### Please RESET the board ###\n");