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)
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;
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 = CONFIG_SYS_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);
126 * All attempts to come up with a "common" initialization sequence
127 * that works for all boards and architectures failed: some of the
128 * requirements are just _too_ different. To get rid of the resulting
129 * mess of board dependend #ifdef'ed code we now make the whole
130 * initialization sequence configurable to the user.
132 * The requirements for any new initalization function is simple: it
133 * receives a pointer to the "global data" structure as it's only
134 * argument, and returns an integer return code, where 0 means
135 * "continue" and != 0 means "fatal error, hang the system".
137 typedef int (init_fnc_t) (void);
139 /************************************************************************
141 ************************************************************************
142 * Some of this code should be moved into the core functions,
143 * but let's get it working (again) first...
146 static int init_baudrate (void)
148 char tmp[64]; /* long enough for environment variables */
149 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
151 gd->baudrate = (i > 0)
152 ? (int) simple_strtoul (tmp, NULL, 10)
157 /***********************************************************************/
159 static int init_func_ram (void)
161 int board_type = 0; /* use dummy arg */
164 if ((gd->ram_size = initdram (board_type)) > 0) {
165 print_size (gd->ram_size, "\n");
172 /***********************************************************************/
174 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
175 static int init_func_i2c (void)
178 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
184 #if defined(CONFIG_HARD_SPI)
185 static int init_func_spi (void)
194 /***********************************************************************/
196 /************************************************************************
197 * Initialization sequence *
198 ************************************************************************
201 init_fnc_t *init_sequence[] = {
210 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
213 #if defined(CONFIG_HARD_SPI)
217 #if defined(CONFIG_SYS_DRAM_TEST)
219 #endif /* CONFIG_SYS_DRAM_TEST */
220 INIT_FUNC_WATCHDOG_INIT
221 NULL, /* Terminate this list */
225 /************************************************************************
227 * This is the first part of the initialization sequence that is
228 * implemented in C, but still running from ROM.
230 * The main purpose is to provide a (serial) console interface as
231 * soon as possible (so we can see any error messages), and to
232 * initialize the RAM so that we can relocate the monitor code to
235 * Be aware of the restrictions: global data is read-only, BSS is not
236 * initialized, and stack space is limited to a few kB.
238 ************************************************************************
242 board_init_f (ulong bootflag)
245 ulong len, addr, addr_sp;
248 init_fnc_t **init_fnc_ptr;
252 char tmp[64]; /* long enough for environment variables */
255 /* Pointer is writable since we allocated a register for it */
256 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
257 /* compiler optimization barrier needed for GCC >= 3.4 */
258 __asm__ __volatile__("": : :"memory");
260 /* Clear initial global data */
261 memset ((void *) gd, 0, sizeof (gd_t));
263 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
264 if ((*init_fnc_ptr)() != 0) {
270 * Now that we have DRAM mapped and working, we can
271 * relocate the code and continue running from DRAM.
273 * Reserve memory at end of RAM for (top down in that order):
277 * - board info struct
279 len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
281 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
283 #ifdef CONFIG_LOGBUFFER
284 /* reserve kernel log buffer */
285 addr -= (LOGBUFF_RESERVE);
286 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
291 * reserve protected RAM
293 i = getenv_r ("pram", tmp, sizeof (tmp));
294 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
295 addr -= (reg << 10); /* size is in kB */
296 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
297 #endif /* CONFIG_PRAM */
299 /* round down to next 4 kB limit */
301 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
304 /* reserve memory for LCD display (always full pages) */
305 addr = lcd_setmem (addr);
307 #endif /* CONFIG_LCD */
310 * reserve memory for U-Boot code, data & bss
311 * round down to next 4 kB limit
316 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
319 * reserve memory for malloc() arena
321 addr_sp = addr - TOTAL_MALLOC_LEN;
322 debug ("Reserving %dk for malloc() at: %08lx\n",
323 TOTAL_MALLOC_LEN >> 10, addr_sp);
326 * (permanently) allocate a Board Info struct
327 * and a permanent copy of the "global" data
329 addr_sp -= sizeof (bd_t);
330 bd = (bd_t *) addr_sp;
332 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
333 sizeof (bd_t), addr_sp);
334 addr_sp -= sizeof (gd_t);
335 id = (gd_t *) addr_sp;
336 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
337 sizeof (gd_t), addr_sp);
339 /* Reserve memory for boot params. */
340 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
341 bd->bi_boot_params = addr_sp;
342 debug ("Reserving %dk for boot parameters at: %08lx\n",
343 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
346 * Finally, we set up a new (bigger) stack.
348 * Leave some safety gap for SP, force alignment on 16 byte boundary
349 * Clear initial stack frame
354 paddr = (ulong *)addr_sp;
357 addr_sp = (ulong)paddr;
359 debug ("Stack Pointer at: %08lx\n", addr_sp);
362 * Save local variables to board info struct
364 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
365 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
366 #ifdef CONFIG_SYS_INIT_RAM_ADDR
367 bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
368 bd->bi_sramsize = CONFIG_SYS_INIT_RAM_END; /* size of SRAM memory */
370 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
372 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
375 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
376 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
378 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
380 #ifdef CONFIG_EXTRA_CLOCK
381 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
382 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
383 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
385 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
387 #ifdef CONFIG_SYS_EXTBDINFO
388 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
389 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
395 post_bootmode_init();
396 post_run (NULL, POST_ROM | post_bootmode_get(0));
401 memcpy (id, (void *)gd, sizeof (gd_t));
403 debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
404 relocate_code (addr_sp, id, addr);
406 /* NOTREACHED - jump_to_ram() does not return */
409 /************************************************************************
411 * This is the next part if the initialization sequence: we are now
412 * running from RAM and have a "normal" C environment, i. e. global
413 * data can be written, BSS has been cleared, the stack size in not
414 * that critical any more, etc.
416 ************************************************************************
418 void board_init_r (gd_t *id, ulong dest_addr)
423 extern void malloc_bin_reloc (void);
425 #ifndef CONFIG_ENV_IS_NOWHERE
426 extern char * env_name_spec;
428 #ifndef CONFIG_SYS_NO_FLASH
431 gd = id; /* initialize RAM version of global data */
434 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
436 #ifdef CONFIG_SERIAL_MULTI
440 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
444 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
446 monitor_flash_len = (ulong)&__init_end - dest_addr;
449 * We have to relocate the command table manually
451 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
453 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
455 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
456 cmdtp->name, (ulong) (cmdtp->cmd), addr);
459 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
461 addr = (ulong)(cmdtp->name) + gd->reloc_off;
462 cmdtp->name = (char *)addr;
465 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
466 cmdtp->usage = (char *)addr;
468 #ifdef CONFIG_SYS_LONGHELP
470 addr = (ulong)(cmdtp->help) + gd->reloc_off;
471 cmdtp->help = (char *)addr;
475 /* there are some other pointer constants we must deal with */
476 #ifndef CONFIG_ENV_IS_NOWHERE
477 env_name_spec += gd->reloc_off;
482 #ifdef CONFIG_LOGBUFFER
483 logbuff_init_ptrs ();
486 post_output_backlog ();
492 /* instruction cache enabled in cpu_init_f() for faster relocation */
493 icache_enable (); /* it's time to enable the instruction cache */
497 * Setup trap handlers
499 trap_init (CONFIG_SYS_SDRAM_BASE);
501 /* initialize malloc() area */
505 #if !defined(CONFIG_SYS_NO_FLASH)
508 if ((flash_size = flash_init ()) > 0) {
509 # ifdef CONFIG_SYS_FLASH_CHECKSUM
510 print_size (flash_size, "");
512 * Compute and print flash CRC if flashchecksum is set to 'y'
514 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
516 s = getenv ("flashchecksum");
517 if (s && (*s == 'y')) {
518 printf (" CRC: %08X",
520 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
525 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
526 print_size (flash_size, "\n");
527 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
533 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
534 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
535 bd->bi_flashoffset = 0;
536 #else /* CONFIG_SYS_NO_FLASH */
537 bd->bi_flashsize = 0;
538 bd->bi_flashstart = 0;
539 bd->bi_flashoffset = 0;
540 #endif /* !CONFIG_SYS_NO_FLASH */
544 /* initialize higher level parts of CPU like time base and timers */
550 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
556 /* relocate environment function pointers etc. */
560 * Fill in missing fields of bd_info.
561 * We do this here, where we have "normal" access to the
562 * environment; we used to do this still running from ROM,
563 * where had to use getenv_r(), which can be pretty slow when
564 * the environment is in EEPROM.
566 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
570 #if defined(CONFIG_PCI)
572 * Do pci configuration
577 /** leave this here (after malloc(), environment and PCI are working) **/
578 /* Initialize stdio devices */
581 /* Initialize the jump table for applications */
584 /* Initialize the console (after the relocation and devices init) */
587 #if defined(CONFIG_MISC_INIT_R)
588 /* miscellaneous platform dependent initialisations */
592 #if defined(CONFIG_CMD_KGDB)
598 debug ("U-Boot relocated to %08lx\n", dest_addr);
605 /* Must happen after interrupts are initialized since
606 * an irq handler gets installed
610 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
611 serial_buffered_init();
614 #ifdef CONFIG_STATUS_LED
615 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
622 /* Insert function pointers now that we have relocated the code */
624 /* Initialize from environment */
625 if ((s = getenv ("loadaddr")) != NULL) {
626 load_addr = simple_strtoul (s, NULL, 16);
628 #if defined(CONFIG_CMD_NET)
629 if ((s = getenv ("bootfile")) != NULL) {
630 copy_filename (BootFile, s, sizeof (BootFile));
636 #if defined(CONFIG_CMD_DOC)
642 #if defined(CONFIG_CMD_NAND)
645 nand_init(); /* go init the NAND */
648 #if defined(CONFIG_CMD_NET)
650 #if defined(FEC_ENET)
653 #if defined(CONFIG_NET_MULTI)
660 post_run (NULL, POST_RAM | post_bootmode_get(0));
663 #if defined(CONFIG_CMD_PCMCIA) \
664 && !defined(CONFIG_CMD_IDE)
670 #if defined(CONFIG_CMD_IDE)
676 #ifdef CONFIG_LAST_STAGE_INIT
679 * Some parts can be only initialized if all others (like
680 * Interrupts) are up and running (i.e. the PC-style ISA
686 #if defined(CONFIG_CMD_BEDBUG)
691 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
693 * Export available size of memory for Linux,
694 * taking into account the protected RAM at top of memory
702 if ((s = getenv ("pram")) != NULL) {
703 pram = simple_strtoul (s, NULL, 10);
710 #ifdef CONFIG_LOGBUFFER
711 /* Also take the logbuffer into account (pram is in kB) */
712 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
714 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
715 setenv ("mem", memsz);
719 #ifdef CONFIG_MODEM_SUPPORT
721 extern int do_mdm_init;
722 do_mdm_init = gd->do_mdm_init;
726 #ifdef CONFIG_WATCHDOG
727 /* disable watchdog if environment is set */
728 if ((s = getenv ("watchdog")) != NULL) {
729 if (strncmp (s, "off", 3) == 0) {
733 #endif /* CONFIG_WATCHDOG*/
736 /* Initialization complete - start the monitor */
738 /* main_loop() can return to retry autoboot, if so just run it again. */
744 /* NOTREACHED - no way out of command loop except booting */
750 puts ("### ERROR ### Please RESET the board ###\n");