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,
36 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
39 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
42 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
45 #ifdef CONFIG_STATUS_LED
46 #include <status_led.h>
49 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
50 #include <cmd_bedbug.h>
52 #ifdef CFG_ALLOC_DPRAM
53 #if !defined(CONFIG_8260)
58 #if defined(CONFIG_BAB7xx)
62 #if defined(CONFIG_POST)
65 #if defined(CONFIG_LOGBUFFER)
69 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
72 #if defined(CONFIG_HARD_I2C) || \
73 defined(CONFIG_SOFT_I2C)
76 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
77 void nand_init (void);
80 static char *failed = "*** failed ***\n";
82 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
83 extern flash_info_t flash_info[];
86 #include <environment.h>
88 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
89 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
90 defined(CFG_ENV_IS_IN_NVRAM)
91 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
93 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
97 * Begin and End of memory area for malloc(), and current "brk"
99 static ulong mem_malloc_start = 0;
100 static ulong mem_malloc_end = 0;
101 static ulong mem_malloc_brk = 0;
103 /************************************************************************
105 ************************************************************************
109 * The Malloc area is immediately below the monitor copy in DRAM
111 static void mem_malloc_init (void)
113 DECLARE_GLOBAL_DATA_PTR;
115 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
117 mem_malloc_end = dest_addr;
118 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
119 mem_malloc_brk = mem_malloc_start;
121 memset ((void *) mem_malloc_start,
123 mem_malloc_end - mem_malloc_start);
126 void *sbrk (ptrdiff_t increment)
128 ulong old = mem_malloc_brk;
129 ulong new = old + increment;
131 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
134 mem_malloc_brk = new;
135 return ((void *) old);
138 char *strmhz (char *buf, long hz)
144 l = sprintf (buf, "%ld", n);
145 m = (hz % 1000000L) / 1000L;
147 sprintf (buf + l, ".%03ld", m);
151 static void syscalls_init (void)
155 syscall_tbl[SYSCALL_MALLOC] = (void *) malloc;
156 syscall_tbl[SYSCALL_FREE] = (void *) free;
158 syscall_tbl[SYSCALL_INSTALL_HDLR] = (void *) irq_install_handler;
159 syscall_tbl[SYSCALL_FREE_HDLR] = (void *) irq_free_handler;
160 syscall_tbl[SYSCALL_GET_TIMER] = (void *)get_timer;
161 syscall_tbl[SYSCALL_UDELAY] = (void *)udelay;
163 addr = (ulong *) 0xc00; /* syscall ISR addr */
166 *addr++ |= (ulong) syscall_tbl >> 16;
167 *addr++ |= (ulong) syscall_tbl & 0xFFFF;
168 *addr++ |= NR_SYSCALLS >> 16;
169 *addr++ |= NR_SYSCALLS & 0xFFFF;
172 flush_cache (0x0C00, 0x10);
174 /* Initialize syscalls stack pointer */
175 addr = (ulong *) 0xCFC;
178 flush_cache ((ulong)addr, 0x10);
183 * All attempts to come up with a "common" initialization sequence
184 * that works for all boards and architectures failed: some of the
185 * requirements are just _too_ different. To get rid of the resulting
186 * mess of board dependend #ifdef'ed code we now make the whole
187 * initialization sequence configurable to the user.
189 * The requirements for any new initalization function is simple: it
190 * receives a pointer to the "global data" structure as it's only
191 * argument, and returns an integer return code, where 0 means
192 * "continue" and != 0 means "fatal error, hang the system".
194 typedef int (init_fnc_t) (void);
196 /************************************************************************
198 ************************************************************************
199 * Some of this code should be moved into the core functions,
200 * but let's get it working (again) first...
203 static int init_baudrate (void)
205 DECLARE_GLOBAL_DATA_PTR;
207 uchar tmp[64]; /* long enough for environment variables */
208 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
210 gd->baudrate = (i > 0)
211 ? (int) simple_strtoul (tmp, NULL, 10)
216 /***********************************************************************/
218 static int init_func_ram (void)
220 DECLARE_GLOBAL_DATA_PTR;
222 #ifdef CONFIG_BOARD_TYPES
223 int board_type = gd->board_type;
225 int board_type = 0; /* use dummy arg */
229 if ((gd->ram_size = initdram (board_type)) > 0) {
230 print_size (gd->ram_size, "\n");
237 /***********************************************************************/
239 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
240 static int init_func_i2c (void)
243 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
249 /***********************************************************************/
251 #if defined(CONFIG_WATCHDOG)
252 static int init_func_watchdog_init (void)
254 puts (" Watchdog enabled\n");
258 # define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
260 static int init_func_watchdog_reset (void)
265 # define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
267 # define INIT_FUNC_WATCHDOG_INIT /* undef */
268 # define INIT_FUNC_WATCHDOG_RESET /* undef */
269 #endif /* CONFIG_WATCHDOG */
271 /************************************************************************
272 * Initialization sequence *
273 ************************************************************************
276 init_fnc_t *init_sequence[] = {
278 #if defined(CONFIG_BOARD_PRE_INIT)
279 board_pre_init, /* very early board init code (fpga boot, etc.) */
282 get_clocks, /* get CPU and bus clocks (etc.) */
284 #ifdef CFG_ALLOC_DPRAM
285 #if !defined(CONFIG_8260)
289 #if defined(CONFIG_BOARD_POSTCLK_INIT)
297 #if defined(CONFIG_8260)
300 #endif /* CONFIG_8260 */
303 INIT_FUNC_WATCHDOG_INIT
304 #if defined(CONFIG_BMW) || \
305 defined(CONFIG_COGENT) || \
306 defined(CONFIG_HYMOD) || \
307 defined(CONFIG_RSD_PROTO) || \
311 INIT_FUNC_WATCHDOG_RESET
312 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
315 #if defined(CONFIG_DTT) /* Digital Thermometers and Thermostats */
321 INIT_FUNC_WATCHDOG_RESET
323 #if defined(CFG_DRAM_TEST)
325 #endif /* CFG_DRAM_TEST */
326 INIT_FUNC_WATCHDOG_RESET
328 NULL, /* Terminate this list */
331 /************************************************************************
333 * This is the first part of the initialization sequence that is
334 * implemented in C, but still running from ROM.
336 * The main purpose is to provide a (serial) console interface as
337 * soon as possible (so we can see any error messages), and to
338 * initialize the RAM so that we can relocate the monitor code to
341 * Be aware of the restrictions: global data is read-only, BSS is not
342 * initialized, and stack space is limited to a few kB.
344 ************************************************************************
347 void board_init_f (ulong bootflag)
349 DECLARE_GLOBAL_DATA_PTR;
352 ulong len, addr, addr_sp;
354 init_fnc_t **init_fnc_ptr;
358 uchar tmp[64]; /* long enough for environment variables */
361 /* Pointer is writable since we allocated a register for it */
362 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
365 /* Clear initial global data */
366 memset ((void *) gd, 0, sizeof (gd_t));
369 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
370 if ((*init_fnc_ptr) () != 0) {
376 * Now that we have DRAM mapped and working, we can
377 * relocate the code and continue running from DRAM.
379 * Reserve memory at end of RAM for (top down in that order):
380 * - kernel log buffer
384 * - board info struct
386 len = get_endaddr () - CFG_MONITOR_BASE;
388 if (len > CFG_MONITOR_LEN) {
389 printf ("*** U-Boot size %ld > reserved memory (%d)\n",
390 len, CFG_MONITOR_LEN);
394 if (CFG_MONITOR_LEN > len)
395 len = CFG_MONITOR_LEN;
397 #ifndef CONFIG_VERY_BIG_RAM
398 addr = CFG_SDRAM_BASE + gd->ram_size;
400 /* only allow stack below 256M */
401 addr = CFG_SDRAM_BASE +
402 (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
405 #ifdef CONFIG_LOGBUFFER
406 /* reserve kernel log buffer */
407 addr -= (LOGBUFF_RESERVE);
409 printf ("Reserving %ldk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
415 * reserve protected RAM
417 i = getenv_r ("pram", tmp, sizeof (tmp));
418 reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
419 addr -= (reg << 10); /* size is in kB */
421 printf ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
423 #endif /* CONFIG_PRAM */
425 /* round down to next 4 kB limit */
428 printf ("Top of RAM usable for U-Boot at: %08lx\n", addr);
432 /* reserve memory for LCD display (always full pages) */
433 addr = lcd_setmem (addr);
435 #endif /* CONFIG_LCD */
437 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
438 /* reserve memory for video display (always full pages) */
439 addr = video_setmem (addr);
441 #endif /* CONFIG_VIDEO */
444 * reserve memory for U-Boot code, data & bss
445 * round down to next 4 kB limit
451 printf ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
454 #ifdef CONFIG_AMIGAONEG3SE
455 gd->relocaddr = addr;
459 * reserve memory for malloc() arena
461 addr_sp = addr - TOTAL_MALLOC_LEN;
463 printf ("Reserving %dk for malloc() at: %08lx\n",
464 TOTAL_MALLOC_LEN >> 10, addr_sp);
468 * (permanently) allocate a Board Info struct
469 * and a permanent copy of the "global" data
471 addr_sp -= sizeof (bd_t);
472 bd = (bd_t *) addr_sp;
475 printf ("Reserving %d Bytes for Board Info at: %08lx\n",
476 sizeof (bd_t), addr_sp);
478 addr_sp -= sizeof (gd_t);
479 id = (gd_t *) addr_sp;
481 printf ("Reserving %d Bytes for Global Data at: %08lx\n",
482 sizeof (gd_t), addr_sp);
486 * Finally, we set up a new (bigger) stack.
488 * Leave some safety gap for SP, force alignment on 16 byte boundary
489 * Clear initial stack frame
493 *((ulong *) addr_sp)-- = 0;
494 *((ulong *) addr_sp)-- = 0;
496 printf ("Stack Pointer at: %08lx\n", addr_sp);
500 * Save local variables to board info struct
503 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
504 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
507 bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
508 bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
510 bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
511 bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
514 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx)
515 bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
518 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
521 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
522 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
523 #if defined(CONFIG_8260)
524 bd->bi_cpmfreq = gd->cpm_clk;
525 bd->bi_brgfreq = gd->brg_clk;
526 bd->bi_sccfreq = gd->scc_clk;
527 bd->bi_vco = gd->vco_out;
528 #endif /* CONFIG_8260 */
530 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
533 strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
534 strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
536 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
537 bd->bi_plb_busfreq = gd->bus_clk;
538 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
539 bd->bi_pci_busfreq = get_PCI_freq ();
544 printf ("New Stack Pointer is: %08lx\n", addr_sp);
550 post_bootmode_init();
551 post_run (NULL, POST_ROM | post_bootmode_get(0));
556 memcpy (id, gd, sizeof (gd_t));
558 relocate_code (addr_sp, id, addr);
560 /* NOTREACHED - relocate_code() does not return */
564 /************************************************************************
566 * This is the next part if the initialization sequence: we are now
567 * running from RAM and have a "normal" C environment, i. e. global
568 * data can be written, BSS has been cleared, the stack size in not
569 * that critical any more, etc.
571 ************************************************************************
574 void board_init_r (gd_t *id, ulong dest_addr)
576 DECLARE_GLOBAL_DATA_PTR;
582 extern void malloc_bin_reloc (void);
583 #ifndef CFG_ENV_IS_NOWHERE
584 extern char * env_name_spec;
591 gd = id; /* initialize RAM version of global data */
594 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
597 printf ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
602 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
605 * We have to relocate the command table manually
607 for (cmdtp = &cmd_tbl[0]; cmdtp->name; cmdtp++) {
610 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
612 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
613 cmdtp->name, (ulong) (cmdtp->cmd), addr);
616 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
618 addr = (ulong)(cmdtp->name) + gd->reloc_off;
619 cmdtp->name = (char *)addr;
622 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
623 cmdtp->usage = (char *)addr;
627 addr = (ulong)(cmdtp->help) + gd->reloc_off;
628 cmdtp->help = (char *)addr;
632 /* there are some other pointer constants we must deal with */
633 #ifndef CFG_ENV_IS_NOWHERE
634 env_name_spec += gd->reloc_off;
639 #ifdef CONFIG_LOGBUFFER
640 logbuff_init_ptrs ();
643 post_output_backlog ();
649 #if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
650 icache_enable (); /* it's time to enable the instruction cache */
653 #if defined(CONFIG_BAB7xx) || defined(CONFIG_CPC45)
655 * Do PCI configuration on BAB7xx and CPC45 _before_ the flash
656 * gets initialised, because we need the ISA resp. PCI_to_LOCAL bus
661 #if defined(CONFIG_BAB7xx)
663 * Initialise the ISA bridge
665 initialise_w83c553f ();
668 asm ("sync ; isync");
671 * Setup trap handlers
673 trap_init (dest_addr);
675 #if !defined(CFG_NO_FLASH)
678 if ((flash_size = flash_init ()) > 0) {
679 #ifdef CFG_FLASH_CHECKSUM
680 print_size (flash_size, "");
682 * Compute and print flash CRC if flashchecksum is set to 'y'
684 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
686 s = getenv ("flashchecksum");
687 if (s && (*s == 'y')) {
688 printf (" CRC: %08lX",
690 (const unsigned char *) CFG_FLASH_BASE,
696 print_size (flash_size, "\n");
697 #endif /* CFG_FLASH_CHECKSUM */
703 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
704 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
705 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
706 bd->bi_flashoffset = 0;
707 #elif CFG_MONITOR_BASE == CFG_FLASH_BASE
708 bd->bi_flashoffset = CFG_MONITOR_LEN; /* reserved area for startup monitor */
710 bd->bi_flashoffset = 0;
714 bd->bi_flashsize = 0;
715 bd->bi_flashstart = 0;
716 bd->bi_flashoffset = 0;
717 #endif /* !CFG_NO_FLASH */
721 /* initialize higher level parts of CPU like time base and timers */
726 /* initialize malloc() area */
731 # if !defined(CFG_ENV_IS_IN_EEPROM)
737 /* relocate environment function pointers etc. */
741 * Fill in missing fields of bd_info.
742 * We do this here, where we have "normal" access to the
743 * environment; we used to do this still running from ROM,
744 * where had to use getenv_r(), which can be pretty slow when
745 * the environment is in EEPROM.
747 s = getenv ("ethaddr");
748 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
750 board_get_enetaddr (bd->bi_enetaddr);
753 for (i = 0; i < 6; ++i) {
754 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
756 s = (*e) ? e + 1 : e;
759 if ((gd->board_type >> 16) == 2)
760 bd->bi_ethspeed = gd->board_type & 0xFFFF;
762 bd->bi_ethspeed = 0xFFFF;
766 load_sernum_ethaddr ();
769 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62)
770 /* handle the 2nd ethernet address */
772 s = getenv ("eth1addr");
774 for (i = 0; i < 6; ++i) {
775 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
777 s = (*e) ? e + 1 : e;
780 #if defined(CFG_GT_6426x)
781 /* handle the 3rd ethernet address */
783 s = getenv ("eth2addr");
785 for (i = 0; i < 6; ++i) {
786 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
788 s = (*e) ? e + 1 : e;
793 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
795 load_sernum_ethaddr ();
798 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
802 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
804 * Do pci configuration
809 /** leave this here (after malloc(), environment and PCI are working) **/
810 /* Initialize devices */
813 /* allocate syscalls table (console_init_r will fill it in */
814 syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
816 /* Initialize the console (after the relocation and devices init) */
818 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
821 #if defined(CONFIG_CCM) || \
822 defined(CONFIG_COGENT) || \
823 defined(CONFIG_CPCI405) || \
824 defined(CONFIG_EVB64260) || \
825 defined(CONFIG_HYMOD) || \
826 defined(CONFIG_KUP4K) || \
827 defined(CONFIG_LWMON) || \
828 defined(CONFIG_PCU_E) || \
829 defined(CONFIG_W7O) || \
830 defined(CONFIG_MISC_INIT_R)
831 /* miscellaneous platform dependent initialisations */
836 if (bd->bi_ethspeed != 0xFFFF)
837 hermes_start_lxt980 ((int) bd->bi_ethspeed);
840 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
841 defined(CONFIG_CCM) || \
842 defined(CONFIG_ELPT860) || \
843 defined(CONFIG_EP8260) || \
844 defined(CONFIG_IP860) || \
845 defined(CONFIG_IVML24) || \
846 defined(CONFIG_IVMS8) || \
847 defined(CONFIG_LWMON) || \
848 defined(CONFIG_MPC8260ADS) || \
849 defined(CONFIG_MPC8266ADS) || \
850 defined(CONFIG_PCU_E) || \
851 defined(CONFIG_RPXSUPER) || \
852 defined(CONFIG_SPD823TS) )
856 puts ("Reset Ethernet PHY\n");
861 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
868 printf ("U-Boot relocated to %08lx\n", dest_addr);
876 /* Must happen after interrupts are initialized since
877 * an irq handler gets installed
879 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
880 serial_buffered_init();
883 #ifdef CONFIG_STATUS_LED
884 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
891 /* Insert function pointers now that we have relocated the code */
893 /* Initialize from environment */
894 if ((s = getenv ("loadaddr")) != NULL) {
895 load_addr = simple_strtoul (s, NULL, 16);
897 #if (CONFIG_COMMANDS & CFG_CMD_NET)
898 if ((s = getenv ("bootfile")) != NULL) {
899 copy_filename (BootFile, s, sizeof (BootFile));
901 #endif /* CFG_CMD_NET */
905 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
911 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
917 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
919 nand_init(); /* go init the NAND */
922 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
929 post_run (NULL, POST_RAM | post_bootmode_get(0));
930 if (post_bootmode_get(0) & POST_POWERFAIL) {
931 post_bootmode_clear();
936 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
942 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
944 # ifdef CONFIG_IDE_8xx_PCCARD
950 #endif /* CFG_CMD_IDE */
952 #ifdef CONFIG_LAST_STAGE_INIT
955 * Some parts can be only initialized if all others (like
956 * Interrupts) are up and running (i.e. the PC-style ISA
962 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
967 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
969 * Export available size of memory for Linux,
970 * taking into account the protected RAM at top of memory
978 if ((s = getenv ("pram")) != NULL) {
979 pram = simple_strtoul (s, NULL, 10);
986 #ifdef CONFIG_LOGBUFFER
987 /* Also take the logbuffer into account (pram is in kB) */
988 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
990 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
991 setenv ("mem", memsz);
995 #ifdef CONFIG_MODEM_SUPPORT
997 extern int do_mdm_init;
998 do_mdm_init = gd->do_mdm_init;
1002 /* Initialization complete - start the monitor */
1004 /* main_loop() can return to retry autoboot, if so just run it again. */
1010 /* NOTREACHED - no way out of command loop except booting */
1015 puts ("### ERROR ### Please RESET the board ###\n");
1019 #ifdef CONFIG_MODEM_SUPPORT
1020 /* called from main loop (common/main.c) */
1021 extern void dbg(const char *fmt, ...);
1027 extern char console_buffer[];
1028 static inline void mdm_readline(char *buf, int bufsiz);
1029 extern void enable_putc(void);
1030 extern int hwflow_onoff(int);
1032 enable_putc(); /* enable serial_putc() */
1034 #ifdef CONFIG_HWFLOW
1035 init_str = getenv("mdm_flow_control");
1036 if (init_str && (strcmp(init_str, "rts/cts") == 0))
1043 sprintf(env_str, "mdm_init%d", i);
1044 if ((init_str = getenv(env_str)) != NULL) {
1045 serial_puts(init_str);
1048 mdm_readline(console_buffer, CFG_CBSIZE);
1049 dbg("ini%d: [%s]", i, console_buffer);
1051 if ((strcmp(console_buffer, "OK") == 0) ||
1052 (strcmp(console_buffer, "ERROR") == 0)) {
1053 dbg("ini%d: cmd done", i);
1055 } else /* in case we are originating call ... */
1056 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1057 dbg("ini%d: connect", i);
1062 break; /* no init string - stop modem init */
1069 /* final stage - wait for connect */
1070 for(;i > 1;) { /* if 'i' > 1 - wait for connection
1071 message from modem */
1072 mdm_readline(console_buffer, CFG_CBSIZE);
1073 dbg("ini_f: [%s]", console_buffer);
1074 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1075 dbg("ini_f: connected");
1083 /* 'inline' - We have to do it fast */
1084 static inline void mdm_readline(char *buf, int bufsiz)
1095 /* dbg("(%c)", c); */
1107 return; /* sanity check */
1117 #if 0 /* We could use plain global data, but the resulting code is bigger */
1119 * Pointer to initial global data area
1121 * Here we initialize it.
1123 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
1124 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
1125 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
1128 /************************************************************************/