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,
34 #include <asm/immap_5272.h>
37 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
40 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
43 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
46 #ifdef CONFIG_STATUS_LED
47 #include <status_led.h>
50 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
51 #include <cmd_bedbug.h>
53 #ifdef CFG_ALLOC_DPRAM
58 #if defined(CONFIG_HARD_I2C) || \
59 defined(CONFIG_SOFT_I2C)
63 DECLARE_GLOBAL_DATA_PTR;
65 static char *failed = "*** failed ***\n";
68 extern flash_info_t flash_info[];
71 #include <environment.h>
73 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
74 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
75 defined(CFG_ENV_IS_IN_NVRAM)
76 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
78 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
81 extern ulong __init_end;
84 extern void timer_init(void);
86 #if defined(CONFIG_WATCHDOG)
87 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
88 # define WATCHDOG_DISABLE watchdog_disable
90 extern int watchdog_init(void);
91 extern int watchdog_disable(void);
93 # define INIT_FUNC_WATCHDOG_INIT /* undef */
94 # define WATCHDOG_DISABLE /* undef */
95 #endif /* CONFIG_WATCHDOG */
97 ulong monitor_flash_len;
100 * Begin and End of memory area for malloc(), and current "brk"
102 static ulong mem_malloc_start = 0;
103 static ulong mem_malloc_end = 0;
104 static ulong mem_malloc_brk = 0;
106 /************************************************************************
108 ************************************************************************
112 * The Malloc area is immediately below the monitor copy in DRAM
114 static void mem_malloc_init (void)
116 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
118 mem_malloc_end = dest_addr;
119 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
120 mem_malloc_brk = mem_malloc_start;
122 memset ((void *) mem_malloc_start,
124 mem_malloc_end - mem_malloc_start);
127 void *sbrk (ptrdiff_t increment)
129 ulong old = mem_malloc_brk;
130 ulong new = old + increment;
132 if ((new < mem_malloc_start) ||
133 (new > mem_malloc_end) ) {
136 mem_malloc_brk = new;
137 return ((void *)old);
140 char *strmhz(char *buf, long hz)
147 l = sprintf (buf, "%ld", n);
149 m = (hz % 1000000L) / 1000L;
152 sprintf (buf+l, ".%03ld", m);
158 * All attempts to come up with a "common" initialization sequence
159 * that works for all boards and architectures failed: some of the
160 * requirements are just _too_ different. To get rid of the resulting
161 * mess of board dependend #ifdef'ed code we now make the whole
162 * initialization sequence configurable to the user.
164 * The requirements for any new initalization function is simple: it
165 * receives a pointer to the "global data" structure as it's only
166 * argument, and returns an integer return code, where 0 means
167 * "continue" and != 0 means "fatal error, hang the system".
169 typedef int (init_fnc_t) (void);
171 /************************************************************************
173 ************************************************************************
174 * Some of this code should be moved into the core functions,
175 * but let's get it working (again) first...
178 static int init_baudrate (void)
180 uchar tmp[64]; /* long enough for environment variables */
181 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
183 gd->baudrate = (i > 0)
184 ? (int) simple_strtoul (tmp, NULL, 10)
189 /***********************************************************************/
191 static int init_func_ram (void)
193 int board_type = 0; /* use dummy arg */
196 if ((gd->ram_size = initdram (board_type)) > 0) {
197 print_size (gd->ram_size, "\n");
204 /***********************************************************************/
206 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
207 static int init_func_i2c (void)
210 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
216 /***********************************************************************/
218 /************************************************************************
219 * Initialization sequence *
220 ************************************************************************
223 init_fnc_t *init_sequence[] = {
232 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
236 #if defined(CFG_DRAM_TEST)
238 #endif /* CFG_DRAM_TEST */
239 INIT_FUNC_WATCHDOG_INIT
240 NULL, /* Terminate this list */
244 /************************************************************************
246 * This is the first part of the initialization sequence that is
247 * implemented in C, but still running from ROM.
249 * The main purpose is to provide a (serial) console interface as
250 * soon as possible (so we can see any error messages), and to
251 * initialize the RAM so that we can relocate the monitor code to
254 * Be aware of the restrictions: global data is read-only, BSS is not
255 * initialized, and stack space is limited to a few kB.
257 ************************************************************************
261 board_init_f (ulong bootflag)
264 ulong len, addr, addr_sp;
267 init_fnc_t **init_fnc_ptr;
271 uchar tmp[64]; /* long enough for environment variables */
274 /* Pointer is writable since we allocated a register for it */
275 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
276 /* compiler optimization barrier needed for GCC >= 3.4 */
277 __asm__ __volatile__("": : :"memory");
279 /* Clear initial global data */
280 memset ((void *) gd, 0, sizeof (gd_t));
282 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
283 if ((*init_fnc_ptr)() != 0) {
289 * Now that we have DRAM mapped and working, we can
290 * relocate the code and continue running from DRAM.
292 * Reserve memory at end of RAM for (top down in that order):
296 * - board info struct
298 len = (ulong)&_end - CFG_MONITOR_BASE;
300 addr = CFG_SDRAM_BASE + gd->ram_size;
302 #ifdef CONFIG_LOGBUFFER
303 /* reserve kernel log buffer */
304 addr -= (LOGBUFF_RESERVE);
305 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
310 * reserve protected RAM
312 i = getenv_r ("pram", tmp, sizeof (tmp));
313 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
314 addr -= (reg << 10); /* size is in kB */
315 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
316 #endif /* CONFIG_PRAM */
319 * reserve memory for U-Boot code, data & bss
320 * round down to next 4 kB limit
325 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
328 * reserve memory for malloc() arena
330 addr_sp = addr - TOTAL_MALLOC_LEN;
331 debug ("Reserving %dk for malloc() at: %08lx\n",
332 TOTAL_MALLOC_LEN >> 10, addr_sp);
335 * (permanently) allocate a Board Info struct
336 * and a permanent copy of the "global" data
338 addr_sp -= sizeof (bd_t);
339 bd = (bd_t *) addr_sp;
341 debug ("Reserving %d Bytes for Board Info at: %08lx\n",
342 sizeof (bd_t), addr_sp);
343 addr_sp -= sizeof (gd_t);
344 id = (gd_t *) addr_sp;
345 debug ("Reserving %d Bytes for Global Data at: %08lx\n",
346 sizeof (gd_t), addr_sp);
348 /* Reserve memory for boot params. */
349 addr_sp -= CFG_BOOTPARAMS_LEN;
350 bd->bi_boot_params = addr_sp;
351 debug ("Reserving %dk for boot parameters at: %08lx\n",
352 CFG_BOOTPARAMS_LEN >> 10, addr_sp);
355 * Finally, we set up a new (bigger) stack.
357 * Leave some safety gap for SP, force alignment on 16 byte boundary
358 * Clear initial stack frame
363 paddr = (ulong *)addr_sp;
366 addr_sp = (ulong)paddr;
368 debug ("Stack Pointer at: %08lx\n", addr_sp);
371 * Save local variables to board info struct
373 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
374 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
375 #ifdef CFG_INIT_RAM_ADDR
376 bd->bi_sramstart = CFG_INIT_RAM_ADDR; /* start of SRAM memory */
377 bd->bi_sramsize = CFG_INIT_RAM_END; /* size of SRAM memory */
379 bd->bi_mbar_base = CFG_MBAR; /* base of internal registers */
381 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
384 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
385 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
386 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
389 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
390 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
396 post_bootmode_init();
397 post_run (NULL, POST_ROM | post_bootmode_get(0));
402 memcpy (id, (void *)gd, sizeof (gd_t));
404 debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
405 relocate_code (addr_sp, id, addr);
407 /* NOTREACHED - jump_to_ram() does not return */
410 /************************************************************************
412 * This is the next part if the initialization sequence: we are now
413 * running from RAM and have a "normal" C environment, i. e. global
414 * data can be written, BSS has been cleared, the stack size in not
415 * that critical any more, etc.
417 ************************************************************************
419 void board_init_r (gd_t *id, ulong dest_addr)
425 extern void malloc_bin_reloc (void);
427 #ifndef CFG_ENV_IS_NOWHERE
428 extern char * env_name_spec;
433 gd = id; /* initialize RAM version of global data */
436 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
438 #ifdef CONFIG_SERIAL_MULTI
442 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
446 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
448 monitor_flash_len = (ulong)&__init_end - dest_addr;
451 * We have to relocate the command table manually
453 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
455 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
457 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
458 cmdtp->name, (ulong) (cmdtp->cmd), addr);
461 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
463 addr = (ulong)(cmdtp->name) + gd->reloc_off;
464 cmdtp->name = (char *)addr;
467 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
468 cmdtp->usage = (char *)addr;
472 addr = (ulong)(cmdtp->help) + gd->reloc_off;
473 cmdtp->help = (char *)addr;
477 /* there are some other pointer constants we must deal with */
478 #ifndef CFG_ENV_IS_NOWHERE
479 env_name_spec += gd->reloc_off;
484 #ifdef CONFIG_LOGBUFFER
485 logbuff_init_ptrs ();
488 post_output_backlog ();
494 /* instruction cache enabled in cpu_init_f() for faster relocation */
495 icache_enable (); /* it's time to enable the instruction cache */
499 * Setup trap handlers
501 trap_init (CFG_SDRAM_BASE);
503 #if !defined(CFG_NO_FLASH)
506 if ((flash_size = flash_init ()) > 0) {
507 # ifdef CFG_FLASH_CHECKSUM
508 print_size (flash_size, "");
510 * Compute and print flash CRC if flashchecksum is set to 'y'
512 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
514 s = getenv ("flashchecksum");
515 if (s && (*s == 'y')) {
516 printf (" CRC: %08lX",
518 (const unsigned char *) CFG_FLASH_BASE,
523 # else /* !CFG_FLASH_CHECKSUM */
524 print_size (flash_size, "\n");
525 # endif /* CFG_FLASH_CHECKSUM */
531 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
532 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
533 bd->bi_flashoffset = 0;
534 #else /* CFG_NO_FLASH */
535 bd->bi_flashsize = 0;
536 bd->bi_flashstart = 0;
537 bd->bi_flashoffset = 0;
538 #endif /* !CFG_NO_FLASH */
542 /* initialize higher level parts of CPU like time base and timers */
547 /* initialize malloc() area */
552 # if !defined(CFG_ENV_IS_IN_EEPROM)
558 /* relocate environment function pointers etc. */
562 * Fill in missing fields of bd_info.
563 * We do this here, where we have "normal" access to the
564 * environment; we used to do this still running from ROM,
565 * where had to use getenv_r(), which can be pretty slow when
566 * the environment is in EEPROM.
568 s = getenv ("ethaddr");
569 for (i = 0; i < 6; ++i) {
570 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
572 s = (*e) ? e + 1 : e;
574 #ifdef CONFIG_HAS_ETH1
575 /* handle the 2nd ethernet address */
577 s = getenv ("eth1addr");
578 for (i = 0; i < 6; ++i) {
579 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
581 s = (*e) ? e + 1 : e;
584 #ifdef CONFIG_HAS_ETH2
585 /* handle the 3rd ethernet address */
587 s = getenv ("eth2addr");
588 for (i = 0; i < 6; ++i) {
589 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
591 s = (*e) ? e + 1 : e;
595 #ifdef CONFIG_HAS_ETH3
596 /* handle 4th ethernet address */
597 s = getenv("eth3addr");
598 for (i = 0; i < 6; ++i) {
599 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
601 s = (*e) ? e + 1 : e;
606 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
610 #if defined(CONFIG_PCI)
612 * Do pci configuration
617 /** leave this here (after malloc(), environment and PCI are working) **/
618 /* Initialize devices */
621 /* Initialize the jump table for applications */
624 /* Initialize the console (after the relocation and devices init) */
627 #if defined(CONFIG_MISC_INIT_R)
628 /* miscellaneous platform dependent initialisations */
632 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
638 debug ("U-Boot relocated to %08lx\n", dest_addr);
645 /* Must happen after interrupts are initialized since
646 * an irq handler gets installed
650 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
651 serial_buffered_init();
654 #ifdef CONFIG_STATUS_LED
655 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
662 /* Insert function pointers now that we have relocated the code */
664 /* Initialize from environment */
665 if ((s = getenv ("loadaddr")) != NULL) {
666 load_addr = simple_strtoul (s, NULL, 16);
668 #if (CONFIG_COMMANDS & CFG_CMD_NET)
669 if ((s = getenv ("bootfile")) != NULL) {
670 copy_filename (BootFile, s, sizeof (BootFile));
672 #endif /* CFG_CMD_NET */
676 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
682 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
685 nand_init(); /* go init the NAND */
688 #if (CONFIG_COMMANDS & CFG_CMD_NET)
690 #if defined(FEC_ENET)
693 #if defined(CONFIG_NET_MULTI)
700 post_run (NULL, POST_RAM | post_bootmode_get(0));
703 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
709 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
713 #endif /* CFG_CMD_IDE */
715 #ifdef CONFIG_LAST_STAGE_INIT
718 * Some parts can be only initialized if all others (like
719 * Interrupts) are up and running (i.e. the PC-style ISA
725 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
730 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
732 * Export available size of memory for Linux,
733 * taking into account the protected RAM at top of memory
741 if ((s = getenv ("pram")) != NULL) {
742 pram = simple_strtoul (s, NULL, 10);
749 #ifdef CONFIG_LOGBUFFER
750 /* Also take the logbuffer into account (pram is in kB) */
751 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
753 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
754 setenv ("mem", memsz);
758 #ifdef CONFIG_MODEM_SUPPORT
760 extern int do_mdm_init;
761 do_mdm_init = gd->do_mdm_init;
765 #ifdef CONFIG_WATCHDOG
766 /* disable watchdog if environment is set */
767 if ((s = getenv ("watchdog")) != NULL) {
768 if (strncmp (s, "off", 3) == 0) {
772 #endif /* CONFIG_WATCHDOG*/
775 /* Initialization complete - start the monitor */
777 /* main_loop() can return to retry autoboot, if so just run it again. */
783 /* NOTREACHED - no way out of command loop except booting */
789 puts ("### ERROR ### Please RESET the board ###\n");