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 #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
83 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
84 defined(CONFIG_ENV_IS_IN_NVRAM)
85 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
87 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
90 extern ulong __init_end;
93 extern void timer_init(void);
95 #if defined(CONFIG_WATCHDOG)
96 # define INIT_FUNC_WATCHDOG_INIT watchdog_init,
97 # define WATCHDOG_DISABLE watchdog_disable
99 extern int watchdog_init(void);
100 extern int watchdog_disable(void);
102 # define INIT_FUNC_WATCHDOG_INIT /* undef */
103 # define WATCHDOG_DISABLE /* undef */
104 #endif /* CONFIG_WATCHDOG */
106 ulong monitor_flash_len;
108 /************************************************************************
110 ************************************************************************
114 * All attempts to come up with a "common" initialization sequence
115 * that works for all boards and architectures failed: some of the
116 * requirements are just _too_ different. To get rid of the resulting
117 * mess of board dependend #ifdef'ed code we now make the whole
118 * initialization sequence configurable to the user.
120 * The requirements for any new initalization function is simple: it
121 * receives a pointer to the "global data" structure as it's only
122 * argument, and returns an integer return code, where 0 means
123 * "continue" and != 0 means "fatal error, hang the system".
125 typedef int (init_fnc_t) (void);
127 /************************************************************************
129 ************************************************************************
130 * Some of this code should be moved into the core functions,
131 * but let's get it working (again) first...
134 static int init_baudrate (void)
136 char tmp[64]; /* long enough for environment variables */
137 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
139 gd->baudrate = (i > 0)
140 ? (int) simple_strtoul (tmp, NULL, 10)
145 /***********************************************************************/
147 static int init_func_ram (void)
149 int board_type = 0; /* use dummy arg */
152 if ((gd->ram_size = initdram (board_type)) > 0) {
153 print_size (gd->ram_size, "\n");
160 /***********************************************************************/
162 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
163 static int init_func_i2c (void)
166 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
172 #if defined(CONFIG_HARD_SPI)
173 static int init_func_spi (void)
182 /***********************************************************************/
184 /************************************************************************
185 * Initialization sequence *
186 ************************************************************************
189 init_fnc_t *init_sequence[] = {
198 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
201 #if defined(CONFIG_HARD_SPI)
205 #if defined(CONFIG_SYS_DRAM_TEST)
207 #endif /* CONFIG_SYS_DRAM_TEST */
208 INIT_FUNC_WATCHDOG_INIT
209 NULL, /* Terminate this list */
213 /************************************************************************
215 * This is the first part of the initialization sequence that is
216 * implemented in C, but still running from ROM.
218 * The main purpose is to provide a (serial) console interface as
219 * soon as possible (so we can see any error messages), and to
220 * initialize the RAM so that we can relocate the monitor code to
223 * Be aware of the restrictions: global data is read-only, BSS is not
224 * initialized, and stack space is limited to a few kB.
226 ************************************************************************
230 board_init_f (ulong bootflag)
233 ulong len, addr, addr_sp;
236 init_fnc_t **init_fnc_ptr;
240 char tmp[64]; /* long enough for environment variables */
243 /* Pointer is writable since we allocated a register for it */
244 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
245 /* compiler optimization barrier needed for GCC >= 3.4 */
246 __asm__ __volatile__("": : :"memory");
248 /* Clear initial global data */
249 memset ((void *) gd, 0, sizeof (gd_t));
251 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
252 if ((*init_fnc_ptr)() != 0) {
258 * Now that we have DRAM mapped and working, we can
259 * relocate the code and continue running from DRAM.
261 * Reserve memory at end of RAM for (top down in that order):
265 * - board info struct
267 len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
269 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
271 #ifdef CONFIG_LOGBUFFER
272 /* reserve kernel log buffer */
273 addr -= (LOGBUFF_RESERVE);
274 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
279 * reserve protected RAM
281 i = getenv_r ("pram", tmp, sizeof (tmp));
282 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
283 addr -= (reg << 10); /* size is in kB */
284 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
285 #endif /* CONFIG_PRAM */
287 /* round down to next 4 kB limit */
289 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
292 /* reserve memory for LCD display (always full pages) */
293 addr = lcd_setmem (addr);
295 #endif /* CONFIG_LCD */
298 * reserve memory for U-Boot code, data & bss
299 * round down to next 4 kB limit
304 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
307 * reserve memory for malloc() arena
309 addr_sp = addr - TOTAL_MALLOC_LEN;
310 debug ("Reserving %dk for malloc() at: %08lx\n",
311 TOTAL_MALLOC_LEN >> 10, addr_sp);
314 * (permanently) allocate a Board Info struct
315 * and a permanent copy of the "global" data
317 addr_sp -= sizeof (bd_t);
318 bd = (bd_t *) addr_sp;
320 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
321 sizeof (bd_t), addr_sp);
322 addr_sp -= sizeof (gd_t);
323 id = (gd_t *) addr_sp;
324 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
325 sizeof (gd_t), addr_sp);
327 /* Reserve memory for boot params. */
328 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
329 bd->bi_boot_params = addr_sp;
330 debug ("Reserving %dk for boot parameters at: %08lx\n",
331 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
334 * Finally, we set up a new (bigger) stack.
336 * Leave some safety gap for SP, force alignment on 16 byte boundary
337 * Clear initial stack frame
342 paddr = (ulong *)addr_sp;
345 addr_sp = (ulong)paddr;
347 debug ("Stack Pointer at: %08lx\n", addr_sp);
350 * Save local variables to board info struct
352 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
353 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
354 #ifdef CONFIG_SYS_INIT_RAM_ADDR
355 bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
356 bd->bi_sramsize = CONFIG_SYS_INIT_RAM_END; /* size of SRAM memory */
358 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
360 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
363 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
364 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
366 bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
368 #ifdef CONFIG_EXTRA_CLOCK
369 bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
370 bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
371 bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
373 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
375 #ifdef CONFIG_SYS_EXTBDINFO
376 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
377 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
383 post_bootmode_init();
384 post_run (NULL, POST_ROM | post_bootmode_get(0));
389 memcpy (id, (void *)gd, sizeof (gd_t));
391 debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
392 relocate_code (addr_sp, id, addr);
394 /* NOTREACHED - jump_to_ram() does not return */
397 /************************************************************************
399 * This is the next part if the initialization sequence: we are now
400 * running from RAM and have a "normal" C environment, i. e. global
401 * data can be written, BSS has been cleared, the stack size in not
402 * that critical any more, etc.
404 ************************************************************************
406 void board_init_r (gd_t *id, ulong dest_addr)
411 extern void malloc_bin_reloc (void);
413 #ifndef CONFIG_ENV_IS_NOWHERE
414 extern char * env_name_spec;
416 #ifndef CONFIG_SYS_NO_FLASH
419 gd = id; /* initialize RAM version of global data */
422 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
424 #ifdef CONFIG_SERIAL_MULTI
428 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
432 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
434 monitor_flash_len = (ulong)&__init_end - dest_addr;
437 * We have to relocate the command table manually
439 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
441 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
443 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
444 cmdtp->name, (ulong) (cmdtp->cmd), addr);
447 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
449 addr = (ulong)(cmdtp->name) + gd->reloc_off;
450 cmdtp->name = (char *)addr;
453 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
454 cmdtp->usage = (char *)addr;
456 #ifdef CONFIG_SYS_LONGHELP
458 addr = (ulong)(cmdtp->help) + gd->reloc_off;
459 cmdtp->help = (char *)addr;
463 /* there are some other pointer constants we must deal with */
464 #ifndef CONFIG_ENV_IS_NOWHERE
465 env_name_spec += gd->reloc_off;
470 #ifdef CONFIG_LOGBUFFER
471 logbuff_init_ptrs ();
474 post_output_backlog ();
480 /* instruction cache enabled in cpu_init_f() for faster relocation */
481 icache_enable (); /* it's time to enable the instruction cache */
485 * Setup trap handlers
487 trap_init (CONFIG_SYS_SDRAM_BASE);
489 /* The Malloc area is immediately below the monitor copy in DRAM */
490 mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
491 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
494 #if !defined(CONFIG_SYS_NO_FLASH)
497 if ((flash_size = flash_init ()) > 0) {
498 # ifdef CONFIG_SYS_FLASH_CHECKSUM
499 print_size (flash_size, "");
501 * Compute and print flash CRC if flashchecksum is set to 'y'
503 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
505 s = getenv ("flashchecksum");
506 if (s && (*s == 'y')) {
507 printf (" CRC: %08X",
509 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
514 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
515 print_size (flash_size, "\n");
516 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
522 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
523 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
524 bd->bi_flashoffset = 0;
525 #else /* CONFIG_SYS_NO_FLASH */
526 bd->bi_flashsize = 0;
527 bd->bi_flashstart = 0;
528 bd->bi_flashoffset = 0;
529 #endif /* !CONFIG_SYS_NO_FLASH */
533 /* initialize higher level parts of CPU like time base and timers */
539 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
545 /* relocate environment function pointers etc. */
549 * Fill in missing fields of bd_info.
550 * We do this here, where we have "normal" access to the
551 * environment; we used to do this still running from ROM,
552 * where had to use getenv_r(), which can be pretty slow when
553 * the environment is in EEPROM.
555 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
559 #if defined(CONFIG_PCI)
561 * Do pci configuration
566 /** leave this here (after malloc(), environment and PCI are working) **/
567 /* Initialize stdio devices */
570 /* Initialize the jump table for applications */
573 /* Initialize the console (after the relocation and devices init) */
576 #if defined(CONFIG_MISC_INIT_R)
577 /* miscellaneous platform dependent initialisations */
581 #if defined(CONFIG_CMD_KGDB)
587 debug ("U-Boot relocated to %08lx\n", dest_addr);
594 /* Must happen after interrupts are initialized since
595 * an irq handler gets installed
599 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
600 serial_buffered_init();
603 #ifdef CONFIG_STATUS_LED
604 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
611 /* Insert function pointers now that we have relocated the code */
613 /* Initialize from environment */
614 if ((s = getenv ("loadaddr")) != NULL) {
615 load_addr = simple_strtoul (s, NULL, 16);
617 #if defined(CONFIG_CMD_NET)
618 if ((s = getenv ("bootfile")) != NULL) {
619 copy_filename (BootFile, s, sizeof (BootFile));
625 #if defined(CONFIG_CMD_DOC)
631 #if defined(CONFIG_CMD_NAND)
634 nand_init(); /* go init the NAND */
637 #ifdef CONFIG_BITBANGMII
640 #if defined(CONFIG_CMD_NET)
642 #if defined(FEC_ENET)
645 #if defined(CONFIG_NET_MULTI)
652 post_run (NULL, POST_RAM | post_bootmode_get(0));
655 #if defined(CONFIG_CMD_PCMCIA) \
656 && !defined(CONFIG_CMD_IDE)
662 #if defined(CONFIG_CMD_IDE)
668 #ifdef CONFIG_LAST_STAGE_INIT
671 * Some parts can be only initialized if all others (like
672 * Interrupts) are up and running (i.e. the PC-style ISA
678 #if defined(CONFIG_CMD_BEDBUG)
683 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
685 * Export available size of memory for Linux,
686 * taking into account the protected RAM at top of memory
694 if ((s = getenv ("pram")) != NULL) {
695 pram = simple_strtoul (s, NULL, 10);
702 #ifdef CONFIG_LOGBUFFER
703 /* Also take the logbuffer into account (pram is in kB) */
704 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
706 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
707 setenv ("mem", memsz);
711 #ifdef CONFIG_MODEM_SUPPORT
713 extern int do_mdm_init;
714 do_mdm_init = gd->do_mdm_init;
718 #ifdef CONFIG_WATCHDOG
719 /* disable watchdog if environment is set */
720 if ((s = getenv ("watchdog")) != NULL) {
721 if (strncmp (s, "off", 3) == 0) {
725 #endif /* CONFIG_WATCHDOG*/
728 /* Initialization complete - start the monitor */
730 /* main_loop() can return to retry autoboot, if so just run it again. */
736 /* NOTREACHED - no way out of command loop except booting */
742 puts ("### ERROR ### Please RESET the board ###\n");