2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
36 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
39 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
42 #ifdef CONFIG_STATUS_LED
43 #include <status_led.h>
46 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
47 #include <cmd_bedbug.h>
49 #ifdef CFG_ALLOC_DPRAM
53 #if defined(CONFIG_BAB7xx)
57 #if defined(CONFIG_POST)
61 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
64 #if defined(CONFIG_HARD_I2C) || \
65 defined(CONFIG_SOFT_I2C)
69 static char *failed = "*** failed ***\n";
71 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
72 extern flash_info_t flash_info[];
75 #include <environment.h>
77 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
78 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
79 defined(CFG_ENV_IS_IN_NVRAM)
80 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
82 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
86 * Begin and End of memory area for malloc(), and current "brk"
88 static ulong mem_malloc_start = 0;
89 static ulong mem_malloc_end = 0;
90 static ulong mem_malloc_brk = 0;
92 /************************************************************************
94 ************************************************************************
98 * The Malloc area is immediately below the monitor copy in DRAM
100 static void mem_malloc_init (void)
102 DECLARE_GLOBAL_DATA_PTR;
104 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
106 mem_malloc_end = dest_addr;
107 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
108 mem_malloc_brk = mem_malloc_start;
110 memset ((void *) mem_malloc_start,
112 mem_malloc_end - mem_malloc_start);
115 void *sbrk (ptrdiff_t increment)
117 ulong old = mem_malloc_brk;
118 ulong new = old + increment;
120 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
123 mem_malloc_brk = new;
124 return ((void *) old);
127 char *strmhz (char *buf, long hz)
133 l = sprintf (buf, "%ld", n);
134 m = (hz % 1000000L) / 1000L;
136 sprintf (buf + l, ".%03ld", m);
140 static void syscalls_init (void)
144 syscall_tbl[SYSCALL_MALLOC] = (void *) malloc;
145 syscall_tbl[SYSCALL_FREE] = (void *) free;
147 syscall_tbl[SYSCALL_INSTALL_HDLR] = (void *) irq_install_handler;
148 syscall_tbl[SYSCALL_FREE_HDLR] = (void *) irq_free_handler;
150 addr = (ulong *) 0xc00; /* syscall ISR addr */
153 *addr++ |= (ulong) syscall_tbl >> 16;
154 *addr++ |= (ulong) syscall_tbl & 0xFFFF;
155 *addr++ |= NR_SYSCALLS >> 16;
156 *addr++ |= NR_SYSCALLS & 0xFFFF;
158 flush_cache (0x0C00, 0x10);
162 * All attempts to come up with a "common" initialization sequence
163 * that works for all boards and architectures failed: some of the
164 * requirements are just _too_ different. To get rid of the resulting
165 * mess of board dependend #ifdef'ed code we now make the whole
166 * initialization sequence configurable to the user.
168 * The requirements for any new initalization function is simple: it
169 * receives a pointer to the "global data" structure as it's only
170 * argument, and returns an integer return code, where 0 means
171 * "continue" and != 0 means "fatal error, hang the system".
173 typedef int (init_fnc_t) (void);
175 /************************************************************************
177 ************************************************************************
178 * Some of this code should be moved into the core functions,
179 * but let's get it working (again) first...
182 static int init_baudrate (void)
184 DECLARE_GLOBAL_DATA_PTR;
186 uchar tmp[64]; /* long enough for environment variables */
187 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
189 gd->baudrate = (i > 0)
190 ? (int) simple_strtoul (tmp, NULL, 10)
196 /***********************************************************************/
198 static int init_func_ram (void)
200 DECLARE_GLOBAL_DATA_PTR;
202 #ifdef CONFIG_BOARD_TYPES
203 int board_type = gd->board_type;
205 int board_type = 0; /* use dummy arg */
209 if ((gd->ram_size = initdram (board_type)) > 0) {
210 print_size (gd->ram_size, "\n");
217 /***********************************************************************/
219 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
220 static int init_func_i2c (void)
223 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
229 /***********************************************************************/
231 #if defined(CONFIG_WATCHDOG)
232 static int init_func_watchdog_init (void)
234 puts (" Watchdog enabled\n");
238 # define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
240 static int init_func_watchdog_reset (void)
245 # define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
247 # define INIT_FUNC_WATCHDOG_INIT /* undef */
248 # define INIT_FUNC_WATCHDOG_RESET /* undef */
249 #endif /* CONFIG_WATCHDOG */
251 /************************************************************************
252 * Initialization sequence *
253 ************************************************************************
256 init_fnc_t *init_sequence[] = {
258 #if defined(CONFIG_BOARD_PRE_INIT)
259 board_pre_init, /* very early board init code (fpga boot, etc.) */
262 get_clocks, /* get CPU and bus clocks (etc.) */
264 #ifdef CFG_ALLOC_DPRAM
267 #if defined(CONFIG_BOARD_POSTCLK_INIT)
275 #if defined(CONFIG_8260)
278 #endif /* CONFIG_8260 */
281 INIT_FUNC_WATCHDOG_INIT
282 #if defined(CONFIG_BMW) || \
283 defined(CONFIG_COGENT) || \
284 defined(CONFIG_HYMOD) || \
285 defined(CONFIG_RSD_PROTO) || \
289 INIT_FUNC_WATCHDOG_RESET
290 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
293 #if defined(CONFIG_DTT) /* Digital Thermometers and Thermostats */
296 INIT_FUNC_WATCHDOG_RESET
298 #if defined(CFG_DRAM_TEST)
300 #endif /* CFG_DRAM_TEST */
301 INIT_FUNC_WATCHDOG_RESET
303 NULL, /* Terminate this list */
306 /************************************************************************
308 * This is the first part of the initialization sequence that is
309 * implemented in C, but still running from ROM.
311 * The main purpose is to provide a (serial) console interface as
312 * soon as possible (so we can see any error messages), and to
313 * initialize the RAM so that we can relocate the monitor code to
316 * Be aware of the restrictions: global data is read-only, BSS is not
317 * initialized, and stack space is limited to a few kB.
319 ************************************************************************
322 void board_init_f (ulong bootflag)
324 DECLARE_GLOBAL_DATA_PTR;
327 ulong len, addr, addr_sp;
329 init_fnc_t **init_fnc_ptr;
333 uchar tmp[64]; /* long enough for environment variables */
336 /* Pointer is writable since we allocated a register for it */
337 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
340 /* Clear initial global data */
341 memset ((void *) gd, 0, sizeof (gd_t));
344 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
345 if ((*init_fnc_ptr) () != 0) {
351 * Now that we have DRAM mapped and working, we can
352 * relocate the code and continue running from DRAM.
354 * Reserve memory at end of RAM for (top down in that order):
358 * - board info struct
360 len = get_endaddr () - CFG_MONITOR_BASE;
362 if (len > CFG_MONITOR_LEN) {
363 printf ("*** U-Boot size %ld > reserved memory (%d)\n",
364 len, CFG_MONITOR_LEN);
368 if (CFG_MONITOR_LEN > len)
369 len = CFG_MONITOR_LEN;
371 #ifndef CONFIG_VERY_BIG_RAM
372 addr = CFG_SDRAM_BASE + gd->ram_size;
374 /* only allow stack below 256M */
375 addr = CFG_SDRAM_BASE +
376 (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
381 * reserve protected RAM
383 i = getenv_r ("pram", tmp, sizeof (tmp));
384 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
385 addr -= (reg << 10); /* size is in kB */
387 printf ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
389 #endif /* CONFIG_PRAM */
391 /* round down to next 4 kB limit */
394 printf ("Top of RAM usable for U-Boot at: %08lx\n", addr);
398 /* reserve memory for LCD display (always full pages) */
399 addr = lcd_setmem (addr);
401 #endif /* CONFIG_LCD */
403 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
404 /* reserve memory for video display (always full pages) */
405 addr = video_setmem (addr);
407 #endif /* CONFIG_VIDEO */
410 * reserve memory for U-Boot code, data & bss
411 * round down to next 4 kB limit
417 printf ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
421 * reserve memory for malloc() arena
423 addr_sp = addr - TOTAL_MALLOC_LEN;
425 printf ("Reserving %dk for malloc() at: %08lx\n",
426 TOTAL_MALLOC_LEN >> 10, addr_sp);
430 * (permanently) allocate a Board Info struct
431 * and a permanent copy of the "global" data
433 addr_sp -= sizeof (bd_t);
434 bd = (bd_t *) addr_sp;
437 printf ("Reserving %d Bytes for Board Info at: %08lx\n",
438 sizeof (bd_t), addr_sp);
440 addr_sp -= sizeof (gd_t);
441 id = (gd_t *) addr_sp;
443 printf ("Reserving %d Bytes for Global Data at: %08lx\n",
444 sizeof (gd_t), addr_sp);
448 * Finally, we set up a new (bigger) stack.
450 * Leave some safety gap for SP, force alignment on 16 byte boundary
451 * Clear initial stack frame
455 *((ulong *) addr_sp)-- = 0;
456 *((ulong *) addr_sp)-- = 0;
458 printf ("Stack Pointer at: %08lx\n", addr_sp);
462 * Save local variables to board info struct
465 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
466 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
469 bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
470 bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
472 bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
473 bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
476 #if defined(CONFIG_8xx) || defined(CONFIG_8260)
477 bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
480 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
483 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
484 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
485 #if defined(CONFIG_8260)
486 bd->bi_cpmfreq = gd->cpm_clk;
487 bd->bi_brgfreq = gd->brg_clk;
488 bd->bi_sccfreq = gd->scc_clk;
489 bd->bi_vco = gd->vco_out;
490 #endif /* CONFIG_8260 */
492 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
495 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
496 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
498 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
499 bd->bi_plb_busfreq = gd->bus_clk;
501 bd->bi_pci_busfreq = get_PCI_freq ();
506 printf ("New Stack Pointer is: %08lx\n", addr_sp);
512 post_bootmode_init();
513 post_run (NULL, POST_ROM | post_bootmode_get(0));
518 memcpy (id, gd, sizeof (gd_t));
520 relocate_code (addr_sp, id, addr);
522 /* NOTREACHED - relocate_code() does not return */
526 /************************************************************************
528 * This is the next part if the initialization sequence: we are now
529 * running from RAM and have a "normal" C environment, i. e. global
530 * data can be written, BSS has been cleared, the stack size in not
531 * that critical any more, etc.
533 ************************************************************************
536 void board_init_r (gd_t *id, ulong dest_addr)
538 DECLARE_GLOBAL_DATA_PTR;
544 extern void malloc_bin_reloc (void);
545 #ifndef CFG_ENV_IS_NOWHERE
546 extern char * env_name_spec;
553 gd = id; /* initialize RAM version of global data */
556 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
559 printf ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
564 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
567 * We have to relocate the command table manually
569 for (cmdtp = &cmd_tbl[0]; cmdtp->name; cmdtp++) {
572 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
574 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
575 cmdtp->name, (ulong) (cmdtp->cmd), addr);
578 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
580 addr = (ulong)(cmdtp->name) + gd->reloc_off;
581 cmdtp->name = (char *)addr;
584 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
585 cmdtp->usage = (char *)addr;
589 addr = (ulong)(cmdtp->help) + gd->reloc_off;
590 cmdtp->help = (char *)addr;
594 /* there are some other pointer constants we must deal with */
595 #ifndef CFG_ENV_IS_NOWHERE
596 env_name_spec += gd->reloc_off;
607 #if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
608 icache_enable (); /* it's time to enable the instruction cache */
611 #if defined(CONFIG_BAB7xx)
613 * Do pci configuration on BAB 7xx _before_ the flash
614 * is initialised, because we need the ISA bridge there.
618 * Initialise the ISA bridge
620 initialise_w83c553f ();
623 asm ("sync ; isync");
626 * Setup trap handlers
628 trap_init (dest_addr);
630 #if !defined(CFG_NO_FLASH)
633 if ((flash_size = flash_init ()) > 0) {
634 #ifdef CFG_FLASH_CHECKSUM
635 print_size (flash_size, "");
637 * Compute and print flash CRC if flashchecksum is set to 'y'
639 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
641 s = getenv ("flashchecksum");
642 if (s && (*s == 'y')) {
643 printf (" CRC: %08lX",
645 (const unsigned char *) CFG_FLASH_BASE,
651 print_size (flash_size, "\n");
652 #endif /* CFG_FLASH_CHECKSUM */
658 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
659 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
660 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
661 bd->bi_flashoffset = 0;
662 #elif CFG_MONITOR_BASE == CFG_FLASH_BASE
663 bd->bi_flashoffset = CFG_MONITOR_LEN; /* reserved area for startup monitor */
665 bd->bi_flashoffset = 0;
669 bd->bi_flashsize = 0;
670 bd->bi_flashstart = 0;
671 bd->bi_flashoffset = 0;
672 #endif /* !CFG_NO_FLASH */
676 /* initialize higher level parts of CPU like time base and timers */
681 /* initialize malloc() area */
686 # if !defined(CFG_ENV_IS_IN_EEPROM)
692 /* relocate environment function pointers etc. */
696 * Fill in missing fields of bd_info.
697 * We do this here, where we have "normal" access to the
698 * environment; we used to do this still running from ROM,
699 * where had to use getenv_r(), which can be pretty slow when
700 * the environment is in EEPROM.
702 s = getenv ("ethaddr");
703 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
705 board_get_enetaddr (bd->bi_enetaddr);
708 for (i = 0; i < 6; ++i) {
709 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
711 s = (*e) ? e + 1 : e;
714 if ((gd->board_type >> 16) == 2)
715 bd->bi_ethspeed = gd->board_type & 0xFFFF;
717 bd->bi_ethspeed = 0xFFFF;
721 load_sernum_ethaddr ();
724 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62)
725 /* handle the 2nd ethernet address */
727 s = getenv ("eth1addr");
729 for (i = 0; i < 6; ++i) {
730 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
732 s = (*e) ? e + 1 : e;
735 #if defined(CFG_GT_6426x)
736 /* handle the 3rd ethernet address */
738 s = getenv ("eth2addr");
740 for (i = 0; i < 6; ++i) {
741 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
743 s = (*e) ? e + 1 : e;
748 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
750 load_sernum_ethaddr ();
753 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
757 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
759 * Do pci configuration
764 /** leave this here (after malloc(), environment and PCI are working) **/
765 /* Initialize devices */
768 /* allocate syscalls table (console_init_r will fill it in */
769 syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
771 /* Initialize the console (after the relocation and devices init) */
773 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
776 #if defined(CONFIG_CCM) || \
777 defined(CONFIG_COGENT) || \
778 defined(CONFIG_CPCI405) || \
779 defined(CONFIG_EVB64260) || \
780 defined(CONFIG_HYMOD) || \
781 defined(CONFIG_LWMON) || \
782 defined(CONFIG_PCU_E) || \
783 defined(CONFIG_W7O) || \
784 defined(CONFIG_MISC_INIT_R)
785 /* miscellaneous platform dependent initialisations */
790 if (bd->bi_ethspeed != 0xFFFF)
791 hermes_start_lxt980 ((int) bd->bi_ethspeed);
794 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
795 defined(CONFIG_CCM) || \
796 defined(CONFIG_EP8260) || \
797 defined(CONFIG_IP860) || \
798 defined(CONFIG_IVML24) || \
799 defined(CONFIG_IVMS8) || \
800 defined(CONFIG_LWMON) || \
801 defined(CONFIG_MPC8260ADS) || \
802 defined(CONFIG_PCU_E) || \
803 defined(CONFIG_RPXSUPER) || \
804 defined(CONFIG_SPD823TS) )
808 puts ("Reset Ethernet PHY\n");
813 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
820 printf ("U-Boot relocated to %08lx\n", dest_addr);
828 /* Must happen after interrupts are initialized since
829 * an irq handler gets installed
831 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
832 serial_buffered_init();
835 #ifdef CONFIG_STATUS_LED
836 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
843 /* Insert function pointers now that we have relocated the code */
845 /* Initialize from environment */
846 if ((s = getenv ("loadaddr")) != NULL) {
847 load_addr = simple_strtoul (s, NULL, 16);
849 #if (CONFIG_COMMANDS & CFG_CMD_NET)
850 if ((s = getenv ("bootfile")) != NULL) {
851 copy_filename (BootFile, s, sizeof (BootFile));
853 #endif /* CFG_CMD_NET */
857 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
863 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
869 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
876 post_run (NULL, POST_RAM | post_bootmode_get(0));
877 if (post_bootmode_get(0) & POST_POWERFAIL) {
878 post_bootmode_clear();
883 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
889 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
891 # ifdef CONFIG_IDE_8xx_PCCARD
897 #endif /* CFG_CMD_IDE */
899 #ifdef CONFIG_LAST_STAGE_INIT
902 * Some parts can be only initialized if all others (like
903 * Interrupts) are up and running (i.e. the PC-style ISA
909 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
916 * Export available size of memory for Linux,
917 * taking into account the protected RAM at top of memory
924 if ((s = getenv ("pram")) != NULL) {
925 pram = simple_strtoul (s, NULL, 10);
929 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
930 setenv ("mem", memsz);
934 /* Initialization complete - start the monitor */
936 /* main_loop() can return to retry autoboot, if so just run it again. */
942 /* NOTREACHED - no way out of command loop except booting */
947 puts ("### ERROR ### Please RESET the board ###\n");
951 #if 0 /* We could use plain global data, but the resulting code is bigger */
953 * Pointer to initial global data area
955 * Here we initialize it.
957 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
958 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
959 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
962 /************************************************************************/