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(ulong start, ulong size)
114 mem_malloc_start = start;
115 mem_malloc_end = start + size;
116 mem_malloc_brk = start;
118 memset ((void *)mem_malloc_start, 0, size);
122 * All attempts to come up with a "common" initialization sequence
123 * that works for all boards and architectures failed: some of the
124 * requirements are just _too_ different. To get rid of the resulting
125 * mess of board dependend #ifdef'ed code we now make the whole
126 * initialization sequence configurable to the user.
128 * The requirements for any new initalization function is simple: it
129 * receives a pointer to the "global data" structure as it's only
130 * argument, and returns an integer return code, where 0 means
131 * "continue" and != 0 means "fatal error, hang the system".
133 typedef int (init_fnc_t) (void);
135 /************************************************************************
137 ************************************************************************
138 * Some of this code should be moved into the core functions,
139 * but let's get it working (again) first...
142 static int init_baudrate (void)
144 char tmp[64]; /* long enough for environment variables */
145 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
147 gd->baudrate = (i > 0)
148 ? (int) simple_strtoul (tmp, NULL, 10)
153 /***********************************************************************/
155 static int init_func_ram (void)
157 int board_type = 0; /* use dummy arg */
160 if ((gd->ram_size = initdram (board_type)) > 0) {
161 print_size (gd->ram_size, "\n");
168 /***********************************************************************/
170 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
171 static int init_func_i2c (void)
174 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
180 #if defined(CONFIG_HARD_SPI)
181 static int init_func_spi (void)
190 /***********************************************************************/
192 /************************************************************************
193 * Initialization sequence *
194 ************************************************************************
197 init_fnc_t *init_sequence[] = {
206 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
209 #if defined(CONFIG_HARD_SPI)
213 #if defined(CONFIG_SYS_DRAM_TEST)
215 #endif /* CONFIG_SYS_DRAM_TEST */
216 INIT_FUNC_WATCHDOG_INIT
217 NULL, /* Terminate this list */
221 /************************************************************************
223 * This is the first part of the initialization sequence that is
224 * implemented in C, but still running from ROM.
226 * The main purpose is to provide a (serial) console interface as
227 * soon as possible (so we can see any error messages), and to
228 * initialize the RAM so that we can relocate the monitor code to
231 * Be aware of the restrictions: global data is read-only, BSS is not
232 * initialized, and stack space is limited to a few kB.
234 ************************************************************************
238 board_init_f (ulong bootflag)
241 ulong len, addr, addr_sp;
244 init_fnc_t **init_fnc_ptr;
248 char tmp[64]; /* long enough for environment variables */
251 /* Pointer is writable since we allocated a register for it */
252 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
253 /* compiler optimization barrier needed for GCC >= 3.4 */
254 __asm__ __volatile__("": : :"memory");
256 /* Clear initial global data */
257 memset ((void *) gd, 0, sizeof (gd_t));
259 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
260 if ((*init_fnc_ptr)() != 0) {
266 * Now that we have DRAM mapped and working, we can
267 * relocate the code and continue running from DRAM.
269 * Reserve memory at end of RAM for (top down in that order):
273 * - board info struct
275 len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
277 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
279 #ifdef CONFIG_LOGBUFFER
280 /* reserve kernel log buffer */
281 addr -= (LOGBUFF_RESERVE);
282 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
287 * reserve protected RAM
289 i = getenv_r ("pram", tmp, sizeof (tmp));
290 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
291 addr -= (reg << 10); /* size is in kB */
292 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
293 #endif /* CONFIG_PRAM */
295 /* round down to next 4 kB limit */
297 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
300 /* reserve memory for LCD display (always full pages) */
301 addr = lcd_setmem (addr);
303 #endif /* CONFIG_LCD */
306 * reserve memory for U-Boot code, data & bss
307 * round down to next 4 kB limit
312 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
315 * reserve memory for malloc() arena
317 addr_sp = addr - TOTAL_MALLOC_LEN;
318 debug ("Reserving %dk for malloc() at: %08lx\n",
319 TOTAL_MALLOC_LEN >> 10, addr_sp);
322 * (permanently) allocate a Board Info struct
323 * and a permanent copy of the "global" data
325 addr_sp -= sizeof (bd_t);
326 bd = (bd_t *) addr_sp;
328 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
329 sizeof (bd_t), addr_sp);
330 addr_sp -= sizeof (gd_t);
331 id = (gd_t *) addr_sp;
332 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
333 sizeof (gd_t), addr_sp);
335 /* Reserve memory for boot params. */
336 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
337 bd->bi_boot_params = addr_sp;
338 debug ("Reserving %dk for boot parameters at: %08lx\n",
339 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
342 * Finally, we set up a new (bigger) stack.
344 * Leave some safety gap for SP, force alignment on 16 byte boundary
345 * Clear initial stack frame
350 paddr = (ulong *)addr_sp;
353 addr_sp = (ulong)paddr;
355 debug ("Stack Pointer at: %08lx\n", addr_sp);
358 * Save local variables to board info struct
360 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
361 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
362 #ifdef CONFIG_SYS_INIT_RAM_ADDR
363 bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
364 bd->bi_sramsize = CONFIG_SYS_INIT_RAM_END; /* size of SRAM memory */
366 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
368 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
371 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
372 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
374 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
376 #ifdef CONFIG_EXTRA_CLOCK
377 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
378 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
379 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
381 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
383 #ifdef CONFIG_SYS_EXTBDINFO
384 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
385 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
391 post_bootmode_init();
392 post_run (NULL, POST_ROM | post_bootmode_get(0));
397 memcpy (id, (void *)gd, sizeof (gd_t));
399 debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
400 relocate_code (addr_sp, id, addr);
402 /* NOTREACHED - jump_to_ram() does not return */
405 /************************************************************************
407 * This is the next part if the initialization sequence: we are now
408 * running from RAM and have a "normal" C environment, i. e. global
409 * data can be written, BSS has been cleared, the stack size in not
410 * that critical any more, etc.
412 ************************************************************************
414 void board_init_r (gd_t *id, ulong dest_addr)
419 extern void malloc_bin_reloc (void);
421 #ifndef CONFIG_ENV_IS_NOWHERE
422 extern char * env_name_spec;
424 #ifndef CONFIG_SYS_NO_FLASH
427 gd = id; /* initialize RAM version of global data */
430 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
432 #ifdef CONFIG_SERIAL_MULTI
436 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
440 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
442 monitor_flash_len = (ulong)&__init_end - dest_addr;
445 * We have to relocate the command table manually
447 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
449 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
451 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
452 cmdtp->name, (ulong) (cmdtp->cmd), addr);
455 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
457 addr = (ulong)(cmdtp->name) + gd->reloc_off;
458 cmdtp->name = (char *)addr;
461 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
462 cmdtp->usage = (char *)addr;
464 #ifdef CONFIG_SYS_LONGHELP
466 addr = (ulong)(cmdtp->help) + gd->reloc_off;
467 cmdtp->help = (char *)addr;
471 /* there are some other pointer constants we must deal with */
472 #ifndef CONFIG_ENV_IS_NOWHERE
473 env_name_spec += gd->reloc_off;
478 #ifdef CONFIG_LOGBUFFER
479 logbuff_init_ptrs ();
482 post_output_backlog ();
488 /* instruction cache enabled in cpu_init_f() for faster relocation */
489 icache_enable (); /* it's time to enable the instruction cache */
493 * Setup trap handlers
495 trap_init (CONFIG_SYS_SDRAM_BASE);
497 /* initialize malloc() area */
498 mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
499 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
502 #if !defined(CONFIG_SYS_NO_FLASH)
505 if ((flash_size = flash_init ()) > 0) {
506 # ifdef CONFIG_SYS_FLASH_CHECKSUM
507 print_size (flash_size, "");
509 * Compute and print flash CRC if flashchecksum is set to 'y'
511 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
513 s = getenv ("flashchecksum");
514 if (s && (*s == 'y')) {
515 printf (" CRC: %08X",
517 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
522 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
523 print_size (flash_size, "\n");
524 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
530 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
531 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
532 bd->bi_flashoffset = 0;
533 #else /* CONFIG_SYS_NO_FLASH */
534 bd->bi_flashsize = 0;
535 bd->bi_flashstart = 0;
536 bd->bi_flashoffset = 0;
537 #endif /* !CONFIG_SYS_NO_FLASH */
541 /* initialize higher level parts of CPU like time base and timers */
547 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
553 /* relocate environment function pointers etc. */
557 * Fill in missing fields of bd_info.
558 * We do this here, where we have "normal" access to the
559 * environment; we used to do this still running from ROM,
560 * where had to use getenv_r(), which can be pretty slow when
561 * the environment is in EEPROM.
563 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
567 #if defined(CONFIG_PCI)
569 * Do pci configuration
574 /** leave this here (after malloc(), environment and PCI are working) **/
575 /* Initialize stdio devices */
578 /* Initialize the jump table for applications */
581 /* Initialize the console (after the relocation and devices init) */
584 #if defined(CONFIG_MISC_INIT_R)
585 /* miscellaneous platform dependent initialisations */
589 #if defined(CONFIG_CMD_KGDB)
595 debug ("U-Boot relocated to %08lx\n", dest_addr);
602 /* Must happen after interrupts are initialized since
603 * an irq handler gets installed
607 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
608 serial_buffered_init();
611 #ifdef CONFIG_STATUS_LED
612 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
619 /* Insert function pointers now that we have relocated the code */
621 /* Initialize from environment */
622 if ((s = getenv ("loadaddr")) != NULL) {
623 load_addr = simple_strtoul (s, NULL, 16);
625 #if defined(CONFIG_CMD_NET)
626 if ((s = getenv ("bootfile")) != NULL) {
627 copy_filename (BootFile, s, sizeof (BootFile));
633 #if defined(CONFIG_CMD_DOC)
639 #if defined(CONFIG_CMD_NAND)
642 nand_init(); /* go init the NAND */
645 #if defined(CONFIG_CMD_NET)
647 #if defined(FEC_ENET)
650 #if defined(CONFIG_NET_MULTI)
657 post_run (NULL, POST_RAM | post_bootmode_get(0));
660 #if defined(CONFIG_CMD_PCMCIA) \
661 && !defined(CONFIG_CMD_IDE)
667 #if defined(CONFIG_CMD_IDE)
673 #ifdef CONFIG_LAST_STAGE_INIT
676 * Some parts can be only initialized if all others (like
677 * Interrupts) are up and running (i.e. the PC-style ISA
683 #if defined(CONFIG_CMD_BEDBUG)
688 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
690 * Export available size of memory for Linux,
691 * taking into account the protected RAM at top of memory
699 if ((s = getenv ("pram")) != NULL) {
700 pram = simple_strtoul (s, NULL, 10);
707 #ifdef CONFIG_LOGBUFFER
708 /* Also take the logbuffer into account (pram is in kB) */
709 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
711 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
712 setenv ("mem", memsz);
716 #ifdef CONFIG_MODEM_SUPPORT
718 extern int do_mdm_init;
719 do_mdm_init = gd->do_mdm_init;
723 #ifdef CONFIG_WATCHDOG
724 /* disable watchdog if environment is set */
725 if ((s = getenv ("watchdog")) != NULL) {
726 if (strncmp (s, "off", 3) == 0) {
730 #endif /* CONFIG_WATCHDOG*/
733 /* Initialization complete - start the monitor */
735 /* main_loop() can return to retry autoboot, if so just run it again. */
741 /* NOTREACHED - no way out of command loop except booting */
747 puts ("### ERROR ### Please RESET the board ###\n");