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)
60 #if defined(CONFIG_LOGBUFFER)
64 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
67 #if defined(CONFIG_HARD_I2C) || \
68 defined(CONFIG_SOFT_I2C)
72 static char *failed = "*** failed ***\n";
74 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
75 extern flash_info_t flash_info[];
78 #include <environment.h>
80 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
81 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
82 defined(CFG_ENV_IS_IN_NVRAM)
83 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
85 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
89 * Begin and End of memory area for malloc(), and current "brk"
91 static ulong mem_malloc_start = 0;
92 static ulong mem_malloc_end = 0;
93 static ulong mem_malloc_brk = 0;
95 /************************************************************************
97 ************************************************************************
101 * The Malloc area is immediately below the monitor copy in DRAM
103 static void mem_malloc_init (void)
105 DECLARE_GLOBAL_DATA_PTR;
107 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
109 mem_malloc_end = dest_addr;
110 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
111 mem_malloc_brk = mem_malloc_start;
113 memset ((void *) mem_malloc_start,
115 mem_malloc_end - mem_malloc_start);
118 void *sbrk (ptrdiff_t increment)
120 ulong old = mem_malloc_brk;
121 ulong new = old + increment;
123 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
126 mem_malloc_brk = new;
127 return ((void *) old);
130 char *strmhz (char *buf, long hz)
136 l = sprintf (buf, "%ld", n);
137 m = (hz % 1000000L) / 1000L;
139 sprintf (buf + l, ".%03ld", m);
143 static void syscalls_init (void)
147 syscall_tbl[SYSCALL_MALLOC] = (void *) malloc;
148 syscall_tbl[SYSCALL_FREE] = (void *) free;
150 syscall_tbl[SYSCALL_INSTALL_HDLR] = (void *) irq_install_handler;
151 syscall_tbl[SYSCALL_FREE_HDLR] = (void *) irq_free_handler;
152 syscall_tbl[SYSCALL_GET_TIMER] = (void *)get_timer;
153 syscall_tbl[SYSCALL_UDELAY] = (void *)udelay;
155 addr = (ulong *) 0xc00; /* syscall ISR addr */
158 *addr++ |= (ulong) syscall_tbl >> 16;
159 *addr++ |= (ulong) syscall_tbl & 0xFFFF;
160 *addr++ |= NR_SYSCALLS >> 16;
161 *addr++ |= NR_SYSCALLS & 0xFFFF;
163 flush_cache (0x0C00, 0x10);
167 * All attempts to come up with a "common" initialization sequence
168 * that works for all boards and architectures failed: some of the
169 * requirements are just _too_ different. To get rid of the resulting
170 * mess of board dependend #ifdef'ed code we now make the whole
171 * initialization sequence configurable to the user.
173 * The requirements for any new initalization function is simple: it
174 * receives a pointer to the "global data" structure as it's only
175 * argument, and returns an integer return code, where 0 means
176 * "continue" and != 0 means "fatal error, hang the system".
178 typedef int (init_fnc_t) (void);
180 /************************************************************************
182 ************************************************************************
183 * Some of this code should be moved into the core functions,
184 * but let's get it working (again) first...
187 static int init_baudrate (void)
189 DECLARE_GLOBAL_DATA_PTR;
191 uchar tmp[64]; /* long enough for environment variables */
192 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
194 gd->baudrate = (i > 0)
195 ? (int) simple_strtoul (tmp, NULL, 10)
201 /***********************************************************************/
203 static int init_func_ram (void)
205 DECLARE_GLOBAL_DATA_PTR;
207 #ifdef CONFIG_BOARD_TYPES
208 int board_type = gd->board_type;
210 int board_type = 0; /* use dummy arg */
214 if ((gd->ram_size = initdram (board_type)) > 0) {
215 print_size (gd->ram_size, "\n");
222 /***********************************************************************/
224 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
225 static int init_func_i2c (void)
228 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
234 /***********************************************************************/
236 #if defined(CONFIG_WATCHDOG)
237 static int init_func_watchdog_init (void)
239 puts (" Watchdog enabled\n");
243 # define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
245 static int init_func_watchdog_reset (void)
250 # define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
252 # define INIT_FUNC_WATCHDOG_INIT /* undef */
253 # define INIT_FUNC_WATCHDOG_RESET /* undef */
254 #endif /* CONFIG_WATCHDOG */
256 /************************************************************************
257 * Initialization sequence *
258 ************************************************************************
261 init_fnc_t *init_sequence[] = {
263 #if defined(CONFIG_BOARD_PRE_INIT)
264 board_pre_init, /* very early board init code (fpga boot, etc.) */
267 get_clocks, /* get CPU and bus clocks (etc.) */
269 #ifdef CFG_ALLOC_DPRAM
272 #if defined(CONFIG_BOARD_POSTCLK_INIT)
280 #if defined(CONFIG_8260)
283 #endif /* CONFIG_8260 */
286 INIT_FUNC_WATCHDOG_INIT
287 #if defined(CONFIG_BMW) || \
288 defined(CONFIG_COGENT) || \
289 defined(CONFIG_HYMOD) || \
290 defined(CONFIG_RSD_PROTO) || \
294 INIT_FUNC_WATCHDOG_RESET
295 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
298 #if defined(CONFIG_DTT) /* Digital Thermometers and Thermostats */
301 INIT_FUNC_WATCHDOG_RESET
303 #if defined(CFG_DRAM_TEST)
305 #endif /* CFG_DRAM_TEST */
306 INIT_FUNC_WATCHDOG_RESET
308 NULL, /* Terminate this list */
311 /************************************************************************
313 * This is the first part of the initialization sequence that is
314 * implemented in C, but still running from ROM.
316 * The main purpose is to provide a (serial) console interface as
317 * soon as possible (so we can see any error messages), and to
318 * initialize the RAM so that we can relocate the monitor code to
321 * Be aware of the restrictions: global data is read-only, BSS is not
322 * initialized, and stack space is limited to a few kB.
324 ************************************************************************
327 void board_init_f (ulong bootflag)
329 DECLARE_GLOBAL_DATA_PTR;
332 ulong len, addr, addr_sp;
334 init_fnc_t **init_fnc_ptr;
338 uchar tmp[64]; /* long enough for environment variables */
341 /* Pointer is writable since we allocated a register for it */
342 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
345 /* Clear initial global data */
346 memset ((void *) gd, 0, sizeof (gd_t));
349 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
350 if ((*init_fnc_ptr) () != 0) {
356 * Now that we have DRAM mapped and working, we can
357 * relocate the code and continue running from DRAM.
359 * Reserve memory at end of RAM for (top down in that order):
363 * - board info struct
365 len = get_endaddr () - CFG_MONITOR_BASE;
367 if (len > CFG_MONITOR_LEN) {
368 printf ("*** U-Boot size %ld > reserved memory (%d)\n",
369 len, CFG_MONITOR_LEN);
373 if (CFG_MONITOR_LEN > len)
374 len = CFG_MONITOR_LEN;
376 #ifndef CONFIG_VERY_BIG_RAM
377 addr = CFG_SDRAM_BASE + gd->ram_size;
379 /* only allow stack below 256M */
380 addr = CFG_SDRAM_BASE +
381 (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
386 * reserve protected RAM
388 i = getenv_r ("pram", tmp, sizeof (tmp));
389 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
390 addr -= (reg << 10); /* size is in kB */
392 printf ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
394 #endif /* CONFIG_PRAM */
396 /* round down to next 4 kB limit */
399 printf ("Top of RAM usable for U-Boot at: %08lx\n", addr);
403 /* reserve memory for LCD display (always full pages) */
404 addr = lcd_setmem (addr);
406 #endif /* CONFIG_LCD */
408 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
409 /* reserve memory for video display (always full pages) */
410 addr = video_setmem (addr);
412 #endif /* CONFIG_VIDEO */
415 * reserve memory for U-Boot code, data & bss
416 * round down to next 4 kB limit
422 printf ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
425 #ifdef CONFIG_AMIGAONEG3SE
426 gd->relocaddr = addr;
430 * reserve memory for malloc() arena
432 addr_sp = addr - TOTAL_MALLOC_LEN;
434 printf ("Reserving %dk for malloc() at: %08lx\n",
435 TOTAL_MALLOC_LEN >> 10, addr_sp);
439 * (permanently) allocate a Board Info struct
440 * and a permanent copy of the "global" data
442 addr_sp -= sizeof (bd_t);
443 bd = (bd_t *) addr_sp;
446 printf ("Reserving %d Bytes for Board Info at: %08lx\n",
447 sizeof (bd_t), addr_sp);
449 addr_sp -= sizeof (gd_t);
450 id = (gd_t *) addr_sp;
452 printf ("Reserving %d Bytes for Global Data at: %08lx\n",
453 sizeof (gd_t), addr_sp);
457 * Finally, we set up a new (bigger) stack.
459 * Leave some safety gap for SP, force alignment on 16 byte boundary
460 * Clear initial stack frame
464 *((ulong *) addr_sp)-- = 0;
465 *((ulong *) addr_sp)-- = 0;
467 printf ("Stack Pointer at: %08lx\n", addr_sp);
471 * Save local variables to board info struct
474 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
475 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
478 bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
479 bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
481 bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
482 bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
485 #if defined(CONFIG_8xx) || defined(CONFIG_8260)
486 bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
489 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
492 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
493 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
494 #if defined(CONFIG_8260)
495 bd->bi_cpmfreq = gd->cpm_clk;
496 bd->bi_brgfreq = gd->brg_clk;
497 bd->bi_sccfreq = gd->scc_clk;
498 bd->bi_vco = gd->vco_out;
499 #endif /* CONFIG_8260 */
501 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
504 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
505 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
507 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
508 bd->bi_plb_busfreq = gd->bus_clk;
510 bd->bi_pci_busfreq = get_PCI_freq ();
515 printf ("New Stack Pointer is: %08lx\n", addr_sp);
521 post_bootmode_init();
522 post_run (NULL, POST_ROM | post_bootmode_get(0));
527 memcpy (id, gd, sizeof (gd_t));
529 relocate_code (addr_sp, id, addr);
531 /* NOTREACHED - relocate_code() does not return */
535 /************************************************************************
537 * This is the next part if the initialization sequence: we are now
538 * running from RAM and have a "normal" C environment, i. e. global
539 * data can be written, BSS has been cleared, the stack size in not
540 * that critical any more, etc.
542 ************************************************************************
545 void board_init_r (gd_t *id, ulong dest_addr)
547 DECLARE_GLOBAL_DATA_PTR;
553 extern void malloc_bin_reloc (void);
554 #ifndef CFG_ENV_IS_NOWHERE
555 extern char * env_name_spec;
562 gd = id; /* initialize RAM version of global data */
565 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
568 printf ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
573 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
576 * We have to relocate the command table manually
578 for (cmdtp = &cmd_tbl[0]; cmdtp->name; cmdtp++) {
581 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
583 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
584 cmdtp->name, (ulong) (cmdtp->cmd), addr);
587 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
589 addr = (ulong)(cmdtp->name) + gd->reloc_off;
590 cmdtp->name = (char *)addr;
593 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
594 cmdtp->usage = (char *)addr;
598 addr = (ulong)(cmdtp->help) + gd->reloc_off;
599 cmdtp->help = (char *)addr;
603 /* there are some other pointer constants we must deal with */
604 #ifndef CFG_ENV_IS_NOWHERE
605 env_name_spec += gd->reloc_off;
610 #ifdef CONFIG_LOGBUFFER
619 #if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
620 icache_enable (); /* it's time to enable the instruction cache */
623 #if defined(CONFIG_BAB7xx)
625 * Do pci configuration on BAB 7xx _before_ the flash
626 * is initialised, because we need the ISA bridge there.
630 * Initialise the ISA bridge
632 initialise_w83c553f ();
635 asm ("sync ; isync");
638 * Setup trap handlers
640 trap_init (dest_addr);
642 #if !defined(CFG_NO_FLASH)
645 if ((flash_size = flash_init ()) > 0) {
646 #ifdef CFG_FLASH_CHECKSUM
647 print_size (flash_size, "");
649 * Compute and print flash CRC if flashchecksum is set to 'y'
651 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
653 s = getenv ("flashchecksum");
654 if (s && (*s == 'y')) {
655 printf (" CRC: %08lX",
657 (const unsigned char *) CFG_FLASH_BASE,
663 print_size (flash_size, "\n");
664 #endif /* CFG_FLASH_CHECKSUM */
670 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
671 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
672 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
673 bd->bi_flashoffset = 0;
674 #elif CFG_MONITOR_BASE == CFG_FLASH_BASE
675 bd->bi_flashoffset = CFG_MONITOR_LEN; /* reserved area for startup monitor */
677 bd->bi_flashoffset = 0;
681 bd->bi_flashsize = 0;
682 bd->bi_flashstart = 0;
683 bd->bi_flashoffset = 0;
684 #endif /* !CFG_NO_FLASH */
688 /* initialize higher level parts of CPU like time base and timers */
693 /* initialize malloc() area */
698 # if !defined(CFG_ENV_IS_IN_EEPROM)
704 /* relocate environment function pointers etc. */
708 * Fill in missing fields of bd_info.
709 * We do this here, where we have "normal" access to the
710 * environment; we used to do this still running from ROM,
711 * where had to use getenv_r(), which can be pretty slow when
712 * the environment is in EEPROM.
714 s = getenv ("ethaddr");
715 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
717 board_get_enetaddr (bd->bi_enetaddr);
720 for (i = 0; i < 6; ++i) {
721 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
723 s = (*e) ? e + 1 : e;
726 if ((gd->board_type >> 16) == 2)
727 bd->bi_ethspeed = gd->board_type & 0xFFFF;
729 bd->bi_ethspeed = 0xFFFF;
733 load_sernum_ethaddr ();
736 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62)
737 /* handle the 2nd ethernet address */
739 s = getenv ("eth1addr");
741 for (i = 0; i < 6; ++i) {
742 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
744 s = (*e) ? e + 1 : e;
747 #if defined(CFG_GT_6426x)
748 /* handle the 3rd ethernet address */
750 s = getenv ("eth2addr");
752 for (i = 0; i < 6; ++i) {
753 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
755 s = (*e) ? e + 1 : e;
760 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
762 load_sernum_ethaddr ();
765 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
769 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
771 * Do pci configuration
776 /** leave this here (after malloc(), environment and PCI are working) **/
777 /* Initialize devices */
780 /* allocate syscalls table (console_init_r will fill it in */
781 syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
783 /* Initialize the console (after the relocation and devices init) */
785 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
788 #if defined(CONFIG_CCM) || \
789 defined(CONFIG_COGENT) || \
790 defined(CONFIG_CPCI405) || \
791 defined(CONFIG_EVB64260) || \
792 defined(CONFIG_HYMOD) || \
793 defined(CONFIG_KUP4K) || \
794 defined(CONFIG_LWMON) || \
795 defined(CONFIG_PCU_E) || \
796 defined(CONFIG_W7O) || \
797 defined(CONFIG_MISC_INIT_R)
798 /* miscellaneous platform dependent initialisations */
803 if (bd->bi_ethspeed != 0xFFFF)
804 hermes_start_lxt980 ((int) bd->bi_ethspeed);
807 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
808 defined(CONFIG_CCM) || \
809 defined(CONFIG_EP8260) || \
810 defined(CONFIG_IP860) || \
811 defined(CONFIG_IVML24) || \
812 defined(CONFIG_IVMS8) || \
813 defined(CONFIG_LWMON) || \
814 defined(CONFIG_MPC8260ADS) || \
815 defined(CONFIG_PCU_E) || \
816 defined(CONFIG_RPXSUPER) || \
817 defined(CONFIG_SPD823TS) )
821 puts ("Reset Ethernet PHY\n");
826 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
833 printf ("U-Boot relocated to %08lx\n", dest_addr);
841 /* Must happen after interrupts are initialized since
842 * an irq handler gets installed
844 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
845 serial_buffered_init();
848 #ifdef CONFIG_STATUS_LED
849 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
856 /* Insert function pointers now that we have relocated the code */
858 /* Initialize from environment */
859 if ((s = getenv ("loadaddr")) != NULL) {
860 load_addr = simple_strtoul (s, NULL, 16);
862 #if (CONFIG_COMMANDS & CFG_CMD_NET)
863 if ((s = getenv ("bootfile")) != NULL) {
864 copy_filename (BootFile, s, sizeof (BootFile));
866 #endif /* CFG_CMD_NET */
870 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
876 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
882 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
889 post_run (NULL, POST_RAM | post_bootmode_get(0));
890 if (post_bootmode_get(0) & POST_POWERFAIL) {
891 post_bootmode_clear();
896 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
902 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
904 # ifdef CONFIG_IDE_8xx_PCCARD
910 #endif /* CFG_CMD_IDE */
912 #ifdef CONFIG_LAST_STAGE_INIT
915 * Some parts can be only initialized if all others (like
916 * Interrupts) are up and running (i.e. the PC-style ISA
922 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
929 * Export available size of memory for Linux,
930 * taking into account the protected RAM at top of memory
937 if ((s = getenv ("pram")) != NULL) {
938 pram = simple_strtoul (s, NULL, 10);
942 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
943 setenv ("mem", memsz);
947 /* Initialization complete - start the monitor */
949 /* main_loop() can return to retry autoboot, if so just run it again. */
955 /* NOTREACHED - no way out of command loop except booting */
960 puts ("### ERROR ### Please RESET the board ###\n");
964 #if 0 /* We could use plain global data, but the resulting code is bigger */
966 * Pointer to initial global data area
968 * Here we initialize it.
970 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
971 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
972 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
975 /************************************************************************/