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,
31 #include <stdio_dev.h>
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)
66 #ifdef CONFIG_BITBANGMII
72 DECLARE_GLOBAL_DATA_PTR;
74 static char *failed = "*** failed ***\n";
77 extern flash_info_t flash_info[];
80 #include <environment.h>
82 extern ulong __init_end;
85 extern void timer_init(void);
87 #if defined(CONFIG_WATCHDOG)
88 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
89 # define WATCHDOG_DISABLE watchdog_disable
91 extern int watchdog_init(void);
92 extern int watchdog_disable(void);
94 # define INIT_FUNC_WATCHDOG_INIT /* undef */
95 # define WATCHDOG_DISABLE /* undef */
96 #endif /* CONFIG_WATCHDOG */
98 ulong monitor_flash_len;
100 /************************************************************************
102 ************************************************************************
106 * All attempts to come up with a "common" initialization sequence
107 * that works for all boards and architectures failed: some of the
108 * requirements are just _too_ different. To get rid of the resulting
109 * mess of board dependend #ifdef'ed code we now make the whole
110 * initialization sequence configurable to the user.
112 * The requirements for any new initalization function is simple: it
113 * receives a pointer to the "global data" structure as it's only
114 * argument, and returns an integer return code, where 0 means
115 * "continue" and != 0 means "fatal error, hang the system".
117 typedef int (init_fnc_t) (void);
119 /************************************************************************
121 ************************************************************************
122 * Some of this code should be moved into the core functions,
123 * but let's get it working (again) first...
126 static int init_baudrate (void)
128 char tmp[64]; /* long enough for environment variables */
129 int i = getenv_f("baudrate", tmp, sizeof (tmp));
131 gd->baudrate = (i > 0)
132 ? (int) simple_strtoul (tmp, NULL, 10)
137 /***********************************************************************/
139 static int init_func_ram (void)
141 int board_type = 0; /* use dummy arg */
144 if ((gd->ram_size = initdram (board_type)) > 0) {
145 print_size (gd->ram_size, "\n");
152 /***********************************************************************/
154 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
155 static int init_func_i2c (void)
158 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
164 #if defined(CONFIG_HARD_SPI)
165 static int init_func_spi (void)
174 /***********************************************************************/
176 /************************************************************************
177 * Initialization sequence *
178 ************************************************************************
181 init_fnc_t *init_sequence[] = {
190 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
193 #if defined(CONFIG_HARD_SPI)
197 #if defined(CONFIG_SYS_DRAM_TEST)
199 #endif /* CONFIG_SYS_DRAM_TEST */
200 INIT_FUNC_WATCHDOG_INIT
201 NULL, /* Terminate this list */
205 /************************************************************************
207 * This is the first part of the initialization sequence that is
208 * implemented in C, but still running from ROM.
210 * The main purpose is to provide a (serial) console interface as
211 * soon as possible (so we can see any error messages), and to
212 * initialize the RAM so that we can relocate the monitor code to
215 * Be aware of the restrictions: global data is read-only, BSS is not
216 * initialized, and stack space is limited to a few kB.
218 ************************************************************************
222 board_init_f (ulong bootflag)
225 ulong len, addr, addr_sp;
228 init_fnc_t **init_fnc_ptr;
232 char tmp[64]; /* long enough for environment variables */
235 /* Pointer is writable since we allocated a register for it */
236 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
237 /* compiler optimization barrier needed for GCC >= 3.4 */
238 __asm__ __volatile__("": : :"memory");
240 /* Clear initial global data */
241 memset ((void *) gd, 0, sizeof (gd_t));
243 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
244 if ((*init_fnc_ptr)() != 0) {
250 * Now that we have DRAM mapped and working, we can
251 * relocate the code and continue running from DRAM.
253 * Reserve memory at end of RAM for (top down in that order):
257 * - board info struct
259 len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
261 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
263 #ifdef CONFIG_LOGBUFFER
264 /* reserve kernel log buffer */
265 addr -= (LOGBUFF_RESERVE);
266 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
271 * reserve protected RAM
273 i = getenv_f("pram", tmp, sizeof (tmp));
274 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
275 addr -= (reg << 10); /* size is in kB */
276 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
277 #endif /* CONFIG_PRAM */
279 /* round down to next 4 kB limit */
281 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
284 /* reserve memory for LCD display (always full pages) */
285 addr = lcd_setmem (addr);
287 #endif /* CONFIG_LCD */
290 * reserve memory for U-Boot code, data & bss
291 * round down to next 4 kB limit
296 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
299 * reserve memory for malloc() arena
301 addr_sp = addr - TOTAL_MALLOC_LEN;
302 debug ("Reserving %dk for malloc() at: %08lx\n",
303 TOTAL_MALLOC_LEN >> 10, addr_sp);
306 * (permanently) allocate a Board Info struct
307 * and a permanent copy of the "global" data
309 addr_sp -= sizeof (bd_t);
310 bd = (bd_t *) addr_sp;
312 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
313 sizeof (bd_t), addr_sp);
314 addr_sp -= sizeof (gd_t);
315 id = (gd_t *) addr_sp;
316 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
317 sizeof (gd_t), addr_sp);
319 /* Reserve memory for boot params. */
320 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
321 bd->bi_boot_params = addr_sp;
322 debug ("Reserving %dk for boot parameters at: %08lx\n",
323 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
326 * Finally, we set up a new (bigger) stack.
328 * Leave some safety gap for SP, force alignment on 16 byte boundary
329 * Clear initial stack frame
334 paddr = (ulong *)addr_sp;
337 addr_sp = (ulong)paddr;
339 debug ("Stack Pointer at: %08lx\n", addr_sp);
342 * Save local variables to board info struct
344 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
345 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
346 #ifdef CONFIG_SYS_INIT_RAM_ADDR
347 bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
348 bd->bi_sramsize = CONFIG_SYS_INIT_RAM_END; /* size of SRAM memory */
350 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
352 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
355 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
356 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
358 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
360 #ifdef CONFIG_EXTRA_CLOCK
361 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
362 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
363 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
365 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
367 #ifdef CONFIG_SYS_EXTBDINFO
368 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
369 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
375 post_bootmode_init();
376 post_run (NULL, POST_ROM | post_bootmode_get(0));
381 memcpy (id, (void *)gd, sizeof (gd_t));
383 debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
384 relocate_code (addr_sp, id, addr);
386 /* NOTREACHED - jump_to_ram() does not return */
389 /************************************************************************
391 * This is the next part if the initialization sequence: we are now
392 * running from RAM and have a "normal" C environment, i. e. global
393 * data can be written, BSS has been cleared, the stack size in not
394 * that critical any more, etc.
396 ************************************************************************
398 void board_init_r (gd_t *id, ulong dest_addr)
403 extern void malloc_bin_reloc (void);
405 #ifndef CONFIG_ENV_IS_NOWHERE
406 extern char * env_name_spec;
408 #ifndef CONFIG_SYS_NO_FLASH
411 gd = id; /* initialize RAM version of global data */
414 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
416 #ifdef CONFIG_SERIAL_MULTI
420 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
424 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
426 monitor_flash_len = (ulong)&__init_end - dest_addr;
428 #if !defined(CONFIG_RELOC_FIXUP_WORKS)
430 * We have to relocate the command table manually
432 fixup_cmdtable(&__u_boot_cmd_start,
433 (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
434 #endif /* !defined(CONFIG_RELOC_FIXUP_WORKS) */
436 /* there are some other pointer constants we must deal with */
437 #ifndef CONFIG_ENV_IS_NOWHERE
438 env_name_spec += gd->reloc_off;
443 #ifdef CONFIG_LOGBUFFER
444 logbuff_init_ptrs ();
447 post_output_backlog ();
453 /* instruction cache enabled in cpu_init_f() for faster relocation */
454 icache_enable (); /* it's time to enable the instruction cache */
458 * Setup trap handlers
460 trap_init (CONFIG_SYS_SDRAM_BASE);
462 /* The Malloc area is immediately below the monitor copy in DRAM */
463 mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
464 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
467 #if !defined(CONFIG_SYS_NO_FLASH)
470 if ((flash_size = flash_init ()) > 0) {
471 # ifdef CONFIG_SYS_FLASH_CHECKSUM
472 print_size (flash_size, "");
474 * Compute and print flash CRC if flashchecksum is set to 'y'
476 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
478 s = getenv ("flashchecksum");
479 if (s && (*s == 'y')) {
480 printf (" CRC: %08X",
482 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
487 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
488 print_size (flash_size, "\n");
489 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
495 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
496 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
497 bd->bi_flashoffset = 0;
498 #else /* CONFIG_SYS_NO_FLASH */
499 bd->bi_flashsize = 0;
500 bd->bi_flashstart = 0;
501 bd->bi_flashoffset = 0;
502 #endif /* !CONFIG_SYS_NO_FLASH */
506 /* initialize higher level parts of CPU like time base and timers */
512 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
518 /* relocate environment function pointers etc. */
522 * Fill in missing fields of bd_info.
523 * We do this here, where we have "normal" access to the
524 * environment; we used to do this still running from ROM,
525 * where had to use getenv_f(), which can be pretty slow when
526 * the environment is in EEPROM.
528 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
532 #if defined(CONFIG_PCI)
534 * Do pci configuration
539 /** leave this here (after malloc(), environment and PCI are working) **/
540 /* Initialize stdio devices */
543 /* Initialize the jump table for applications */
546 /* Initialize the console (after the relocation and devices init) */
549 #if defined(CONFIG_MISC_INIT_R)
550 /* miscellaneous platform dependent initialisations */
554 #if defined(CONFIG_CMD_KGDB)
560 debug ("U-Boot relocated to %08lx\n", dest_addr);
567 /* Must happen after interrupts are initialized since
568 * an irq handler gets installed
572 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
573 serial_buffered_init();
576 #ifdef CONFIG_STATUS_LED
577 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
584 /* Insert function pointers now that we have relocated the code */
586 /* Initialize from environment */
587 if ((s = getenv ("loadaddr")) != NULL) {
588 load_addr = simple_strtoul (s, NULL, 16);
590 #if defined(CONFIG_CMD_NET)
591 if ((s = getenv ("bootfile")) != NULL) {
592 copy_filename (BootFile, s, sizeof (BootFile));
598 #if defined(CONFIG_CMD_DOC)
604 #if defined(CONFIG_CMD_NAND)
607 nand_init(); /* go init the NAND */
610 #ifdef CONFIG_BITBANGMII
613 #if defined(CONFIG_CMD_NET)
615 #if defined(FEC_ENET)
618 #if defined(CONFIG_NET_MULTI)
625 post_run (NULL, POST_RAM | post_bootmode_get(0));
628 #if defined(CONFIG_CMD_PCMCIA) \
629 && !defined(CONFIG_CMD_IDE)
635 #if defined(CONFIG_CMD_IDE)
641 #ifdef CONFIG_LAST_STAGE_INIT
644 * Some parts can be only initialized if all others (like
645 * Interrupts) are up and running (i.e. the PC-style ISA
651 #if defined(CONFIG_CMD_BEDBUG)
656 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
658 * Export available size of memory for Linux,
659 * taking into account the protected RAM at top of memory
667 if ((s = getenv ("pram")) != NULL) {
668 pram = simple_strtoul (s, NULL, 10);
675 #ifdef CONFIG_LOGBUFFER
676 /* Also take the logbuffer into account (pram is in kB) */
677 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
679 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
680 setenv ("mem", memsz);
684 #ifdef CONFIG_MODEM_SUPPORT
686 extern int do_mdm_init;
687 do_mdm_init = gd->do_mdm_init;
691 #ifdef CONFIG_WATCHDOG
692 /* disable watchdog if environment is set */
693 if ((s = getenv ("watchdog")) != NULL) {
694 if (strncmp (s, "off", 3) == 0) {
698 #endif /* CONFIG_WATCHDOG*/
701 /* Initialization complete - start the monitor */
703 /* main_loop() can return to retry autoboot, if so just run it again. */
709 /* NOTREACHED - no way out of command loop except booting */
715 puts ("### ERROR ### Please RESET the board ###\n");