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>
48 #if defined(CONFIG_CMD_BEDBUG)
49 #include <cmd_bedbug.h>
51 #ifdef CFG_ALLOC_DPRAM
56 #if defined(CONFIG_HARD_I2C) || \
57 defined(CONFIG_SOFT_I2C)
61 DECLARE_GLOBAL_DATA_PTR
;
63 static char *failed
= "*** failed ***\n";
66 extern flash_info_t flash_info
[];
69 #include <environment.h>
71 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
72 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
73 defined(CFG_ENV_IS_IN_NVRAM)
74 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
76 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
79 extern ulong __init_end
;
82 extern void timer_init(void);
84 #if defined(CONFIG_WATCHDOG)
85 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
86 # define WATCHDOG_DISABLE watchdog_disable
88 extern int watchdog_init(void);
89 extern int watchdog_disable(void);
91 # define INIT_FUNC_WATCHDOG_INIT /* undef */
92 # define WATCHDOG_DISABLE /* undef */
93 #endif /* CONFIG_WATCHDOG */
95 ulong monitor_flash_len
;
98 * Begin and End of memory area for malloc(), and current "brk"
100 static ulong mem_malloc_start
= 0;
101 static ulong mem_malloc_end
= 0;
102 static ulong mem_malloc_brk
= 0;
104 /************************************************************************
106 ************************************************************************
110 * The Malloc area is immediately below the monitor copy in DRAM
112 static void mem_malloc_init (void)
114 ulong dest_addr
= CFG_MONITOR_BASE
+ gd
->reloc_off
;
116 mem_malloc_end
= dest_addr
;
117 mem_malloc_start
= dest_addr
- TOTAL_MALLOC_LEN
;
118 mem_malloc_brk
= mem_malloc_start
;
120 memset ((void *) mem_malloc_start
,
122 mem_malloc_end
- mem_malloc_start
);
125 void *sbrk (ptrdiff_t increment
)
127 ulong old
= mem_malloc_brk
;
128 ulong
new = old
+ increment
;
130 if ((new < mem_malloc_start
) ||
131 (new > mem_malloc_end
) ) {
134 mem_malloc_brk
= new;
135 return ((void *)old
);
138 char *strmhz(char *buf
, long hz
)
145 l
= sprintf (buf
, "%ld", n
);
147 m
= (hz
% 1000000L) / 1000L;
150 sprintf (buf
+l
, ".%03ld", m
);
156 * All attempts to come up with a "common" initialization sequence
157 * that works for all boards and architectures failed: some of the
158 * requirements are just _too_ different. To get rid of the resulting
159 * mess of board dependend #ifdef'ed code we now make the whole
160 * initialization sequence configurable to the user.
162 * The requirements for any new initalization function is simple: it
163 * receives a pointer to the "global data" structure as it's only
164 * argument, and returns an integer return code, where 0 means
165 * "continue" and != 0 means "fatal error, hang the system".
167 typedef int (init_fnc_t
) (void);
169 /************************************************************************
171 ************************************************************************
172 * Some of this code should be moved into the core functions,
173 * but let's get it working (again) first...
176 static int init_baudrate (void)
178 uchar tmp
[64]; /* long enough for environment variables */
179 int i
= getenv_r ("baudrate", tmp
, sizeof (tmp
));
181 gd
->baudrate
= (i
> 0)
182 ? (int) simple_strtoul (tmp
, NULL
, 10)
187 /***********************************************************************/
189 static int init_func_ram (void)
191 int board_type
= 0; /* use dummy arg */
194 if ((gd
->ram_size
= initdram (board_type
)) > 0) {
195 print_size (gd
->ram_size
, "\n");
202 /***********************************************************************/
204 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
205 static int init_func_i2c (void)
208 i2c_init (CFG_I2C_SPEED
, CFG_I2C_SLAVE
);
214 /***********************************************************************/
216 /************************************************************************
217 * Initialization sequence *
218 ************************************************************************
221 init_fnc_t
*init_sequence
[] = {
230 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
234 #if defined(CFG_DRAM_TEST)
236 #endif /* CFG_DRAM_TEST */
237 INIT_FUNC_WATCHDOG_INIT
238 NULL
, /* Terminate this list */
242 /************************************************************************
244 * This is the first part of the initialization sequence that is
245 * implemented in C, but still running from ROM.
247 * The main purpose is to provide a (serial) console interface as
248 * soon as possible (so we can see any error messages), and to
249 * initialize the RAM so that we can relocate the monitor code to
252 * Be aware of the restrictions: global data is read-only, BSS is not
253 * initialized, and stack space is limited to a few kB.
255 ************************************************************************
259 board_init_f (ulong bootflag
)
262 ulong len
, addr
, addr_sp
;
265 init_fnc_t
**init_fnc_ptr
;
269 uchar tmp
[64]; /* long enough for environment variables */
272 /* Pointer is writable since we allocated a register for it */
273 gd
= (gd_t
*) (CFG_INIT_RAM_ADDR
+ CFG_GBL_DATA_OFFSET
);
274 /* compiler optimization barrier needed for GCC >= 3.4 */
275 __asm__
__volatile__("": : :"memory");
277 /* Clear initial global data */
278 memset ((void *) gd
, 0, sizeof (gd_t
));
280 for (init_fnc_ptr
= init_sequence
; *init_fnc_ptr
; ++init_fnc_ptr
) {
281 if ((*init_fnc_ptr
)() != 0) {
287 * Now that we have DRAM mapped and working, we can
288 * relocate the code and continue running from DRAM.
290 * Reserve memory at end of RAM for (top down in that order):
294 * - board info struct
296 len
= (ulong
)&_end
- CFG_MONITOR_BASE
;
298 addr
= CFG_SDRAM_BASE
+ gd
->ram_size
;
300 #ifdef CONFIG_LOGBUFFER
301 /* reserve kernel log buffer */
302 addr
-= (LOGBUFF_RESERVE
);
303 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN
, addr
);
308 * reserve protected RAM
310 i
= getenv_r ("pram", tmp
, sizeof (tmp
));
311 reg
= (i
> 0) ? simple_strtoul (tmp
, NULL
, 10) : CONFIG_PRAM
;
312 addr
-= (reg
<< 10); /* size is in kB */
313 debug ("Reserving %ldk for protected RAM at %08lx\n", reg
, addr
);
314 #endif /* CONFIG_PRAM */
316 /* round down to next 4 kB limit */
318 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr
);
321 /* reserve memory for LCD display (always full pages) */
322 addr
= lcd_setmem (addr
);
324 #endif /* CONFIG_LCD */
327 * reserve memory for U-Boot code, data & bss
328 * round down to next 4 kB limit
333 debug ("Reserving %ldk for U-Boot at: %08lx\n", len
>> 10, addr
);
336 * reserve memory for malloc() arena
338 addr_sp
= addr
- TOTAL_MALLOC_LEN
;
339 debug ("Reserving %dk for malloc() at: %08lx\n",
340 TOTAL_MALLOC_LEN
>> 10, addr_sp
);
343 * (permanently) allocate a Board Info struct
344 * and a permanent copy of the "global" data
346 addr_sp
-= sizeof (bd_t
);
347 bd
= (bd_t
*) addr_sp
;
349 debug ("Reserving %d Bytes for Board Info at: %08lx\n",
350 sizeof (bd_t
), addr_sp
);
351 addr_sp
-= sizeof (gd_t
);
352 id
= (gd_t
*) addr_sp
;
353 debug ("Reserving %d Bytes for Global Data at: %08lx\n",
354 sizeof (gd_t
), addr_sp
);
356 /* Reserve memory for boot params. */
357 addr_sp
-= CFG_BOOTPARAMS_LEN
;
358 bd
->bi_boot_params
= addr_sp
;
359 debug ("Reserving %dk for boot parameters at: %08lx\n",
360 CFG_BOOTPARAMS_LEN
>> 10, addr_sp
);
363 * Finally, we set up a new (bigger) stack.
365 * Leave some safety gap for SP, force alignment on 16 byte boundary
366 * Clear initial stack frame
371 paddr
= (ulong
*)addr_sp
;
374 addr_sp
= (ulong
)paddr
;
376 debug ("Stack Pointer at: %08lx\n", addr_sp
);
379 * Save local variables to board info struct
381 bd
->bi_memstart
= CFG_SDRAM_BASE
; /* start of DRAM memory */
382 bd
->bi_memsize
= gd
->ram_size
; /* size of DRAM memory in bytes */
383 #ifdef CFG_INIT_RAM_ADDR
384 bd
->bi_sramstart
= CFG_INIT_RAM_ADDR
; /* start of SRAM memory */
385 bd
->bi_sramsize
= CFG_INIT_RAM_END
; /* size of SRAM memory */
387 bd
->bi_mbar_base
= CFG_MBAR
; /* base of internal registers */
389 bd
->bi_bootflags
= bootflag
; /* boot / reboot flag (for LynxOS) */
392 bd
->bi_intfreq
= gd
->cpu_clk
; /* Internal Freq, in Hz */
393 bd
->bi_busfreq
= gd
->bus_clk
; /* Bus Freq, in Hz */
395 bd
->bi_pcifreq
= gd
->pci_clk
; /* PCI Freq in Hz */
397 #ifdef CONFIG_EXTRA_CLOCK
398 bd
->bi_inpfreq
= gd
->inp_clk
; /* input Freq in Hz */
399 bd
->bi_vcofreq
= gd
->vco_clk
; /* vco Freq in Hz */
400 bd
->bi_flbfreq
= gd
->flb_clk
; /* flexbus Freq in Hz */
402 bd
->bi_baudrate
= gd
->baudrate
; /* Console Baudrate */
405 strncpy (bd
->bi_s_version
, "1.2", sizeof (bd
->bi_s_version
));
406 strncpy (bd
->bi_r_version
, U_BOOT_VERSION
, sizeof (bd
->bi_r_version
));
412 post_bootmode_init();
413 post_run (NULL
, POST_ROM
| post_bootmode_get(0));
418 memcpy (id
, (void *)gd
, sizeof (gd_t
));
420 debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE
, addr
);
421 relocate_code (addr_sp
, id
, addr
);
423 /* NOTREACHED - jump_to_ram() does not return */
426 /************************************************************************
428 * This is the next part if the initialization sequence: we are now
429 * running from RAM and have a "normal" C environment, i. e. global
430 * data can be written, BSS has been cleared, the stack size in not
431 * that critical any more, etc.
433 ************************************************************************
435 void board_init_r (gd_t
*id
, ulong dest_addr
)
441 extern void malloc_bin_reloc (void);
443 #ifndef CFG_ENV_IS_NOWHERE
444 extern char * env_name_spec
;
449 gd
= id
; /* initialize RAM version of global data */
452 gd
->flags
|= GD_FLG_RELOC
; /* tell others: relocation done */
454 #ifdef CONFIG_SERIAL_MULTI
458 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr
);
462 gd
->reloc_off
= dest_addr
- CFG_MONITOR_BASE
;
464 monitor_flash_len
= (ulong
)&__init_end
- dest_addr
;
467 * We have to relocate the command table manually
469 for (cmdtp
= &__u_boot_cmd_start
; cmdtp
!= &__u_boot_cmd_end
; cmdtp
++) {
471 addr
= (ulong
) (cmdtp
->cmd
) + gd
->reloc_off
;
473 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
474 cmdtp
->name
, (ulong
) (cmdtp
->cmd
), addr
);
477 (int (*)(struct cmd_tbl_s
*, int, int, char *[]))addr
;
479 addr
= (ulong
)(cmdtp
->name
) + gd
->reloc_off
;
480 cmdtp
->name
= (char *)addr
;
483 addr
= (ulong
)(cmdtp
->usage
) + gd
->reloc_off
;
484 cmdtp
->usage
= (char *)addr
;
488 addr
= (ulong
)(cmdtp
->help
) + gd
->reloc_off
;
489 cmdtp
->help
= (char *)addr
;
493 /* there are some other pointer constants we must deal with */
494 #ifndef CFG_ENV_IS_NOWHERE
495 env_name_spec
+= gd
->reloc_off
;
500 #ifdef CONFIG_LOGBUFFER
501 logbuff_init_ptrs ();
504 post_output_backlog ();
510 /* instruction cache enabled in cpu_init_f() for faster relocation */
511 icache_enable (); /* it's time to enable the instruction cache */
515 * Setup trap handlers
517 trap_init (CFG_SDRAM_BASE
);
519 #if !defined(CFG_NO_FLASH)
522 if ((flash_size
= flash_init ()) > 0) {
523 # ifdef CFG_FLASH_CHECKSUM
524 print_size (flash_size
, "");
526 * Compute and print flash CRC if flashchecksum is set to 'y'
528 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
530 s
= getenv ("flashchecksum");
531 if (s
&& (*s
== 'y')) {
532 printf (" CRC: %08lX",
534 (const unsigned char *) CFG_FLASH_BASE
,
539 # else /* !CFG_FLASH_CHECKSUM */
540 print_size (flash_size
, "\n");
541 # endif /* CFG_FLASH_CHECKSUM */
547 bd
->bi_flashstart
= CFG_FLASH_BASE
; /* update start of FLASH memory */
548 bd
->bi_flashsize
= flash_size
; /* size of FLASH memory (final value) */
549 bd
->bi_flashoffset
= 0;
550 #else /* CFG_NO_FLASH */
551 bd
->bi_flashsize
= 0;
552 bd
->bi_flashstart
= 0;
553 bd
->bi_flashoffset
= 0;
554 #endif /* !CFG_NO_FLASH */
558 /* initialize higher level parts of CPU like time base and timers */
563 /* initialize malloc() area */
568 # if !defined(CFG_ENV_IS_IN_EEPROM)
574 /* relocate environment function pointers etc. */
578 * Fill in missing fields of bd_info.
579 * We do this here, where we have "normal" access to the
580 * environment; we used to do this still running from ROM,
581 * where had to use getenv_r(), which can be pretty slow when
582 * the environment is in EEPROM.
584 s
= getenv ("ethaddr");
585 for (i
= 0; i
< 6; ++i
) {
586 bd
->bi_enetaddr
[i
] = s
? simple_strtoul (s
, &e
, 16) : 0;
588 s
= (*e
) ? e
+ 1 : e
;
590 #ifdef CONFIG_HAS_ETH1
591 /* handle the 2nd ethernet address */
593 s
= getenv ("eth1addr");
594 for (i
= 0; i
< 6; ++i
) {
595 bd
->bi_enet1addr
[i
] = s
? simple_strtoul (s
, &e
, 16) : 0;
597 s
= (*e
) ? e
+ 1 : e
;
600 #ifdef CONFIG_HAS_ETH2
601 /* handle the 3rd ethernet address */
603 s
= getenv ("eth2addr");
604 for (i
= 0; i
< 6; ++i
) {
605 bd
->bi_enet2addr
[i
] = s
? simple_strtoul (s
, &e
, 16) : 0;
607 s
= (*e
) ? e
+ 1 : e
;
611 #ifdef CONFIG_HAS_ETH3
612 /* handle 4th ethernet address */
613 s
= getenv("eth3addr");
614 for (i
= 0; i
< 6; ++i
) {
615 bd
->bi_enet3addr
[i
] = s
? simple_strtoul (s
, &e
, 16) : 0;
617 s
= (*e
) ? e
+ 1 : e
;
622 bd
->bi_ip_addr
= getenv_IPaddr ("ipaddr");
626 #if defined(CONFIG_PCI)
628 * Do pci configuration
633 /** leave this here (after malloc(), environment and PCI are working) **/
634 /* Initialize devices */
637 /* Initialize the jump table for applications */
640 /* Initialize the console (after the relocation and devices init) */
643 #if defined(CONFIG_MISC_INIT_R)
644 /* miscellaneous platform dependent initialisations */
648 #if defined(CONFIG_CMD_KGDB)
654 debug ("U-Boot relocated to %08lx\n", dest_addr
);
661 /* Must happen after interrupts are initialized since
662 * an irq handler gets installed
666 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
667 serial_buffered_init();
670 #ifdef CONFIG_STATUS_LED
671 status_led_set (STATUS_LED_BOOT
, STATUS_LED_BLINKING
);
678 /* Insert function pointers now that we have relocated the code */
680 /* Initialize from environment */
681 if ((s
= getenv ("loadaddr")) != NULL
) {
682 load_addr
= simple_strtoul (s
, NULL
, 16);
684 #if defined(CONFIG_CMD_NET)
685 if ((s
= getenv ("bootfile")) != NULL
) {
686 copy_filename (BootFile
, s
, sizeof (BootFile
));
692 #if defined(CONFIG_CMD_DOC)
698 #if defined(CONFIG_CMD_NAND)
701 nand_init(); /* go init the NAND */
704 #if defined(CONFIG_CMD_NET)
706 #if defined(FEC_ENET)
709 #if defined(CONFIG_NET_MULTI)
716 post_run (NULL
, POST_RAM
| post_bootmode_get(0));
719 #if defined(CONFIG_CMD_PCMCIA) \
720 && !defined(CONFIG_CMD_IDE)
726 #if defined(CONFIG_CMD_IDE)
732 #ifdef CONFIG_LAST_STAGE_INIT
735 * Some parts can be only initialized if all others (like
736 * Interrupts) are up and running (i.e. the PC-style ISA
742 #if defined(CONFIG_CMD_BEDBUG)
747 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
749 * Export available size of memory for Linux,
750 * taking into account the protected RAM at top of memory
758 if ((s
= getenv ("pram")) != NULL
) {
759 pram
= simple_strtoul (s
, NULL
, 10);
766 #ifdef CONFIG_LOGBUFFER
767 /* Also take the logbuffer into account (pram is in kB) */
768 pram
+= (LOGBUFF_LEN
+LOGBUFF_OVERHEAD
)/1024;
770 sprintf (memsz
, "%ldk", (bd
->bi_memsize
/ 1024) - pram
);
771 setenv ("mem", memsz
);
775 #ifdef CONFIG_MODEM_SUPPORT
777 extern int do_mdm_init
;
778 do_mdm_init
= gd
->do_mdm_init
;
782 #ifdef CONFIG_WATCHDOG
783 /* disable watchdog if environment is set */
784 if ((s
= getenv ("watchdog")) != NULL
) {
785 if (strncmp (s
, "off", 3) == 0) {
789 #endif /* CONFIG_WATCHDOG*/
792 /* Initialization complete - start the monitor */
794 /* main_loop() can return to retry autoboot, if so just run it again. */
800 /* NOTREACHED - no way out of command loop except booting */
806 puts ("### ERROR ### Please RESET the board ###\n");