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;
153 addr = (ulong *) 0xc00; /* syscall ISR addr */
156 *addr++ |= (ulong) syscall_tbl >> 16;
157 *addr++ |= (ulong) syscall_tbl & 0xFFFF;
158 *addr++ |= NR_SYSCALLS >> 16;
159 *addr++ |= NR_SYSCALLS & 0xFFFF;
161 flush_cache (0x0C00, 0x10);
165 * All attempts to come up with a "common" initialization sequence
166 * that works for all boards and architectures failed: some of the
167 * requirements are just _too_ different. To get rid of the resulting
168 * mess of board dependend #ifdef'ed code we now make the whole
169 * initialization sequence configurable to the user.
171 * The requirements for any new initalization function is simple: it
172 * receives a pointer to the "global data" structure as it's only
173 * argument, and returns an integer return code, where 0 means
174 * "continue" and != 0 means "fatal error, hang the system".
176 typedef int (init_fnc_t) (void);
178 /************************************************************************
180 ************************************************************************
181 * Some of this code should be moved into the core functions,
182 * but let's get it working (again) first...
185 static int init_baudrate (void)
187 DECLARE_GLOBAL_DATA_PTR;
189 uchar tmp[64]; /* long enough for environment variables */
190 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
192 gd->baudrate = (i > 0)
193 ? (int) simple_strtoul (tmp, NULL, 10)
199 /***********************************************************************/
201 static int init_func_ram (void)
203 DECLARE_GLOBAL_DATA_PTR;
205 #ifdef CONFIG_BOARD_TYPES
206 int board_type = gd->board_type;
208 int board_type = 0; /* use dummy arg */
212 if ((gd->ram_size = initdram (board_type)) > 0) {
213 print_size (gd->ram_size, "\n");
220 /***********************************************************************/
222 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
223 static int init_func_i2c (void)
226 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
232 /***********************************************************************/
234 #if defined(CONFIG_WATCHDOG)
235 static int init_func_watchdog_init (void)
237 puts (" Watchdog enabled\n");
241 # define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
243 static int init_func_watchdog_reset (void)
248 # define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
250 # define INIT_FUNC_WATCHDOG_INIT /* undef */
251 # define INIT_FUNC_WATCHDOG_RESET /* undef */
252 #endif /* CONFIG_WATCHDOG */
254 /************************************************************************
255 * Initialization sequence *
256 ************************************************************************
259 init_fnc_t *init_sequence[] = {
261 #if defined(CONFIG_BOARD_PRE_INIT)
262 board_pre_init, /* very early board init code (fpga boot, etc.) */
265 get_clocks, /* get CPU and bus clocks (etc.) */
267 #ifdef CFG_ALLOC_DPRAM
270 #if defined(CONFIG_BOARD_POSTCLK_INIT)
278 #if defined(CONFIG_8260)
281 #endif /* CONFIG_8260 */
284 INIT_FUNC_WATCHDOG_INIT
285 #if defined(CONFIG_BMW) || \
286 defined(CONFIG_COGENT) || \
287 defined(CONFIG_HYMOD) || \
288 defined(CONFIG_RSD_PROTO) || \
292 INIT_FUNC_WATCHDOG_RESET
293 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
296 #if defined(CONFIG_DTT) /* Digital Thermometers and Thermostats */
299 INIT_FUNC_WATCHDOG_RESET
301 #if defined(CFG_DRAM_TEST)
303 #endif /* CFG_DRAM_TEST */
304 INIT_FUNC_WATCHDOG_RESET
306 NULL, /* Terminate this list */
309 /************************************************************************
311 * This is the first part of the initialization sequence that is
312 * implemented in C, but still running from ROM.
314 * The main purpose is to provide a (serial) console interface as
315 * soon as possible (so we can see any error messages), and to
316 * initialize the RAM so that we can relocate the monitor code to
319 * Be aware of the restrictions: global data is read-only, BSS is not
320 * initialized, and stack space is limited to a few kB.
322 ************************************************************************
325 void board_init_f (ulong bootflag)
327 DECLARE_GLOBAL_DATA_PTR;
330 ulong len, addr, addr_sp;
332 init_fnc_t **init_fnc_ptr;
336 uchar tmp[64]; /* long enough for environment variables */
339 /* Pointer is writable since we allocated a register for it */
340 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
343 /* Clear initial global data */
344 memset ((void *) gd, 0, sizeof (gd_t));
347 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
348 if ((*init_fnc_ptr) () != 0) {
354 * Now that we have DRAM mapped and working, we can
355 * relocate the code and continue running from DRAM.
357 * Reserve memory at end of RAM for (top down in that order):
361 * - board info struct
363 len = get_endaddr () - CFG_MONITOR_BASE;
365 if (len > CFG_MONITOR_LEN) {
366 printf ("*** U-Boot size %ld > reserved memory (%d)\n",
367 len, CFG_MONITOR_LEN);
371 if (CFG_MONITOR_LEN > len)
372 len = CFG_MONITOR_LEN;
374 #ifndef CONFIG_VERY_BIG_RAM
375 addr = CFG_SDRAM_BASE + gd->ram_size;
377 /* only allow stack below 256M */
378 addr = CFG_SDRAM_BASE +
379 (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
384 * reserve protected RAM
386 i = getenv_r ("pram", tmp, sizeof (tmp));
387 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
388 addr -= (reg << 10); /* size is in kB */
390 printf ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
392 #endif /* CONFIG_PRAM */
394 /* round down to next 4 kB limit */
397 printf ("Top of RAM usable for U-Boot at: %08lx\n", addr);
401 /* reserve memory for LCD display (always full pages) */
402 addr = lcd_setmem (addr);
404 #endif /* CONFIG_LCD */
406 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
407 /* reserve memory for video display (always full pages) */
408 addr = video_setmem (addr);
410 #endif /* CONFIG_VIDEO */
413 * reserve memory for U-Boot code, data & bss
414 * round down to next 4 kB limit
420 printf ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
424 * reserve memory for malloc() arena
426 addr_sp = addr - TOTAL_MALLOC_LEN;
428 printf ("Reserving %dk for malloc() at: %08lx\n",
429 TOTAL_MALLOC_LEN >> 10, addr_sp);
433 * (permanently) allocate a Board Info struct
434 * and a permanent copy of the "global" data
436 addr_sp -= sizeof (bd_t);
437 bd = (bd_t *) addr_sp;
440 printf ("Reserving %d Bytes for Board Info at: %08lx\n",
441 sizeof (bd_t), addr_sp);
443 addr_sp -= sizeof (gd_t);
444 id = (gd_t *) addr_sp;
446 printf ("Reserving %d Bytes for Global Data at: %08lx\n",
447 sizeof (gd_t), addr_sp);
451 * Finally, we set up a new (bigger) stack.
453 * Leave some safety gap for SP, force alignment on 16 byte boundary
454 * Clear initial stack frame
458 *((ulong *) addr_sp)-- = 0;
459 *((ulong *) addr_sp)-- = 0;
461 printf ("Stack Pointer at: %08lx\n", addr_sp);
465 * Save local variables to board info struct
468 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
469 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
472 bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
473 bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
475 bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
476 bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
479 #if defined(CONFIG_8xx) || defined(CONFIG_8260)
480 bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
483 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
486 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
487 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
488 #if defined(CONFIG_8260)
489 bd->bi_cpmfreq = gd->cpm_clk;
490 bd->bi_brgfreq = gd->brg_clk;
491 bd->bi_sccfreq = gd->scc_clk;
492 bd->bi_vco = gd->vco_out;
493 #endif /* CONFIG_8260 */
495 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
498 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
499 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
501 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
502 bd->bi_plb_busfreq = gd->bus_clk;
504 bd->bi_pci_busfreq = get_PCI_freq ();
509 printf ("New Stack Pointer is: %08lx\n", addr_sp);
515 post_bootmode_init();
516 post_run (NULL, POST_ROM | post_bootmode_get(0));
521 memcpy (id, gd, sizeof (gd_t));
523 relocate_code (addr_sp, id, addr);
525 /* NOTREACHED - relocate_code() does not return */
529 /************************************************************************
531 * This is the next part if the initialization sequence: we are now
532 * running from RAM and have a "normal" C environment, i. e. global
533 * data can be written, BSS has been cleared, the stack size in not
534 * that critical any more, etc.
536 ************************************************************************
539 void board_init_r (gd_t *id, ulong dest_addr)
541 DECLARE_GLOBAL_DATA_PTR;
547 extern void malloc_bin_reloc (void);
548 #ifndef CFG_ENV_IS_NOWHERE
549 extern char * env_name_spec;
556 gd = id; /* initialize RAM version of global data */
559 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
562 printf ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
567 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
570 * We have to relocate the command table manually
572 for (cmdtp = &cmd_tbl[0]; cmdtp->name; cmdtp++) {
575 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
577 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
578 cmdtp->name, (ulong) (cmdtp->cmd), addr);
581 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
583 addr = (ulong)(cmdtp->name) + gd->reloc_off;
584 cmdtp->name = (char *)addr;
587 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
588 cmdtp->usage = (char *)addr;
592 addr = (ulong)(cmdtp->help) + gd->reloc_off;
593 cmdtp->help = (char *)addr;
597 /* there are some other pointer constants we must deal with */
598 #ifndef CFG_ENV_IS_NOWHERE
599 env_name_spec += gd->reloc_off;
604 #ifdef CONFIG_LOGBUFFER
613 #if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
614 icache_enable (); /* it's time to enable the instruction cache */
617 #if defined(CONFIG_BAB7xx)
619 * Do pci configuration on BAB 7xx _before_ the flash
620 * is initialised, because we need the ISA bridge there.
624 * Initialise the ISA bridge
626 initialise_w83c553f ();
629 asm ("sync ; isync");
632 * Setup trap handlers
634 trap_init (dest_addr);
636 #if !defined(CFG_NO_FLASH)
639 if ((flash_size = flash_init ()) > 0) {
640 #ifdef CFG_FLASH_CHECKSUM
641 print_size (flash_size, "");
643 * Compute and print flash CRC if flashchecksum is set to 'y'
645 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
647 s = getenv ("flashchecksum");
648 if (s && (*s == 'y')) {
649 printf (" CRC: %08lX",
651 (const unsigned char *) CFG_FLASH_BASE,
657 print_size (flash_size, "\n");
658 #endif /* CFG_FLASH_CHECKSUM */
664 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
665 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
666 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
667 bd->bi_flashoffset = 0;
668 #elif CFG_MONITOR_BASE == CFG_FLASH_BASE
669 bd->bi_flashoffset = CFG_MONITOR_LEN; /* reserved area for startup monitor */
671 bd->bi_flashoffset = 0;
675 bd->bi_flashsize = 0;
676 bd->bi_flashstart = 0;
677 bd->bi_flashoffset = 0;
678 #endif /* !CFG_NO_FLASH */
682 /* initialize higher level parts of CPU like time base and timers */
687 /* initialize malloc() area */
692 # if !defined(CFG_ENV_IS_IN_EEPROM)
698 /* relocate environment function pointers etc. */
702 * Fill in missing fields of bd_info.
703 * We do this here, where we have "normal" access to the
704 * environment; we used to do this still running from ROM,
705 * where had to use getenv_r(), which can be pretty slow when
706 * the environment is in EEPROM.
708 s = getenv ("ethaddr");
709 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
711 board_get_enetaddr (bd->bi_enetaddr);
714 for (i = 0; i < 6; ++i) {
715 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
717 s = (*e) ? e + 1 : e;
720 if ((gd->board_type >> 16) == 2)
721 bd->bi_ethspeed = gd->board_type & 0xFFFF;
723 bd->bi_ethspeed = 0xFFFF;
727 load_sernum_ethaddr ();
730 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62)
731 /* handle the 2nd ethernet address */
733 s = getenv ("eth1addr");
735 for (i = 0; i < 6; ++i) {
736 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
738 s = (*e) ? e + 1 : e;
741 #if defined(CFG_GT_6426x)
742 /* handle the 3rd ethernet address */
744 s = getenv ("eth2addr");
746 for (i = 0; i < 6; ++i) {
747 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
749 s = (*e) ? e + 1 : e;
754 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
756 load_sernum_ethaddr ();
759 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
763 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
765 * Do pci configuration
770 /** leave this here (after malloc(), environment and PCI are working) **/
771 /* Initialize devices */
774 /* allocate syscalls table (console_init_r will fill it in */
775 syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
777 /* Initialize the console (after the relocation and devices init) */
779 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
782 #if defined(CONFIG_CCM) || \
783 defined(CONFIG_COGENT) || \
784 defined(CONFIG_CPCI405) || \
785 defined(CONFIG_EVB64260) || \
786 defined(CONFIG_HYMOD) || \
787 defined(CONFIG_KUP4K) || \
788 defined(CONFIG_LWMON) || \
789 defined(CONFIG_PCU_E) || \
790 defined(CONFIG_W7O) || \
791 defined(CONFIG_MISC_INIT_R)
792 /* miscellaneous platform dependent initialisations */
797 if (bd->bi_ethspeed != 0xFFFF)
798 hermes_start_lxt980 ((int) bd->bi_ethspeed);
801 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
802 defined(CONFIG_CCM) || \
803 defined(CONFIG_EP8260) || \
804 defined(CONFIG_IP860) || \
805 defined(CONFIG_IVML24) || \
806 defined(CONFIG_IVMS8) || \
807 defined(CONFIG_LWMON) || \
808 defined(CONFIG_MPC8260ADS) || \
809 defined(CONFIG_PCU_E) || \
810 defined(CONFIG_RPXSUPER) || \
811 defined(CONFIG_SPD823TS) )
815 puts ("Reset Ethernet PHY\n");
820 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
827 printf ("U-Boot relocated to %08lx\n", dest_addr);
835 /* Must happen after interrupts are initialized since
836 * an irq handler gets installed
838 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
839 serial_buffered_init();
842 #ifdef CONFIG_STATUS_LED
843 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
850 /* Insert function pointers now that we have relocated the code */
852 /* Initialize from environment */
853 if ((s = getenv ("loadaddr")) != NULL) {
854 load_addr = simple_strtoul (s, NULL, 16);
856 #if (CONFIG_COMMANDS & CFG_CMD_NET)
857 if ((s = getenv ("bootfile")) != NULL) {
858 copy_filename (BootFile, s, sizeof (BootFile));
860 #endif /* CFG_CMD_NET */
864 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
870 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
876 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
883 post_run (NULL, POST_RAM | post_bootmode_get(0));
884 if (post_bootmode_get(0) & POST_POWERFAIL) {
885 post_bootmode_clear();
890 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
896 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
898 # ifdef CONFIG_IDE_8xx_PCCARD
904 #endif /* CFG_CMD_IDE */
906 #ifdef CONFIG_LAST_STAGE_INIT
909 * Some parts can be only initialized if all others (like
910 * Interrupts) are up and running (i.e. the PC-style ISA
916 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
923 * Export available size of memory for Linux,
924 * taking into account the protected RAM at top of memory
931 if ((s = getenv ("pram")) != NULL) {
932 pram = simple_strtoul (s, NULL, 10);
936 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
937 setenv ("mem", memsz);
941 /* Initialization complete - start the monitor */
943 /* main_loop() can return to retry autoboot, if so just run it again. */
949 /* NOTREACHED - no way out of command loop except booting */
954 puts ("### ERROR ### Please RESET the board ###\n");
958 #if 0 /* We could use plain global data, but the resulting code is bigger */
960 * Pointer to initial global data area
962 * Here we initialize it.
964 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
965 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
966 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
969 /************************************************************************/