2 * (C) Copyright 2000-2004
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,
38 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
41 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
44 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
47 #ifdef CONFIG_STATUS_LED
48 #include <status_led.h>
51 #ifdef CFG_ALLOC_DPRAM
52 #if !(defined(CONFIG_8260)||defined(CONFIG_MPC8560))
57 #if defined(CONFIG_BAB7xx)
61 #if defined(CONFIG_POST)
64 #if defined(CONFIG_LOGBUFFER)
67 #if defined(CFG_INIT_RAM_LOCK) && defined(CONFIG_E500)
68 #include <asm/cache.h>
74 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
77 #if defined(CONFIG_HARD_I2C) || \
78 defined(CONFIG_SOFT_I2C)
81 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
82 void nand_init (void);
85 static char *failed = "*** failed ***\n";
87 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
88 extern flash_info_t flash_info[];
91 #include <environment.h>
93 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
94 (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
95 defined(CFG_ENV_IS_IN_NVRAM)
96 #define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
98 #define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
101 extern ulong __init_end;
103 ulong monitor_flash_len;
105 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
106 #include <bedbug/type.h>
110 * Begin and End of memory area for malloc(), and current "brk"
112 static ulong mem_malloc_start = 0;
113 static ulong mem_malloc_end = 0;
114 static ulong mem_malloc_brk = 0;
116 /************************************************************************
118 ************************************************************************
122 * The Malloc area is immediately below the monitor copy in DRAM
124 static void mem_malloc_init (void)
126 DECLARE_GLOBAL_DATA_PTR;
128 ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
130 mem_malloc_end = dest_addr;
131 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
132 mem_malloc_brk = mem_malloc_start;
134 memset ((void *) mem_malloc_start,
136 mem_malloc_end - mem_malloc_start);
139 void *sbrk (ptrdiff_t increment)
141 ulong old = mem_malloc_brk;
142 ulong new = old + increment;
144 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
147 mem_malloc_brk = new;
148 return ((void *) old);
151 char *strmhz (char *buf, long hz)
157 l = sprintf (buf, "%ld", n);
158 m = (hz % 1000000L) / 1000L;
160 sprintf (buf + l, ".%03ld", m);
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)
198 /***********************************************************************/
200 static int init_func_ram (void)
202 DECLARE_GLOBAL_DATA_PTR;
204 #ifdef CONFIG_BOARD_TYPES
205 int board_type = gd->board_type;
207 int board_type = 0; /* use dummy arg */
211 if ((gd->ram_size = initdram (board_type)) > 0) {
212 print_size (gd->ram_size, "\n");
219 /***********************************************************************/
221 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
222 static int init_func_i2c (void)
225 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
231 /***********************************************************************/
233 #if defined(CONFIG_WATCHDOG)
234 static int init_func_watchdog_init (void)
236 puts (" Watchdog enabled\n");
240 # define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
242 static int init_func_watchdog_reset (void)
247 # define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
249 # define INIT_FUNC_WATCHDOG_INIT /* undef */
250 # define INIT_FUNC_WATCHDOG_RESET /* undef */
251 #endif /* CONFIG_WATCHDOG */
253 /************************************************************************
254 * Initialization sequence *
255 ************************************************************************
258 init_fnc_t *init_sequence[] = {
260 #if defined(CONFIG_BOARD_EARLY_INIT_F)
263 get_clocks, /* get CPU and bus clocks (etc.) */
265 #ifdef CFG_ALLOC_DPRAM
266 #if !(defined(CONFIG_8260) || defined(CONFIG_MPC8560))
270 #if defined(CONFIG_BOARD_POSTCLK_INIT)
278 #if defined(CONFIG_8260)
281 #endif /* CONFIG_8260 */
283 #if defined(CONFIG_MPC5XXX)
285 #endif /* CONFIG_MPC5XXX */
287 INIT_FUNC_WATCHDOG_INIT
288 #if defined(CONFIG_MISC_INIT_F)
291 INIT_FUNC_WATCHDOG_RESET
292 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
295 #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);
344 #if !(defined(CONFIG_8260) || defined(CONFIG_MPC8560))
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):
360 * - kernel log buffer
364 * - board info struct
366 len = (ulong)&_end - CFG_MONITOR_BASE;
368 #ifndef CONFIG_VERY_BIG_RAM
369 addr = CFG_SDRAM_BASE + gd->ram_size;
371 /* only allow stack below 256M */
372 addr = CFG_SDRAM_BASE +
373 (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
376 #ifdef CONFIG_LOGBUFFER
377 /* reserve kernel log buffer */
378 addr -= (LOGBUFF_RESERVE);
379 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
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 */
389 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
390 #endif /* CONFIG_PRAM */
392 /* round down to next 4 kB limit */
394 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
397 /* reserve memory for LCD display (always full pages) */
398 addr = lcd_setmem (addr);
400 #endif /* CONFIG_LCD */
402 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
403 /* reserve memory for video display (always full pages) */
404 addr = video_setmem (addr);
406 #endif /* CONFIG_VIDEO */
409 * reserve memory for U-Boot code, data & bss
410 * round down to next 4 kB limit
415 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
417 #ifdef CONFIG_AMIGAONEG3SE
418 gd->relocaddr = addr;
422 * reserve memory for malloc() arena
424 addr_sp = addr - TOTAL_MALLOC_LEN;
425 debug ("Reserving %dk for malloc() at: %08lx\n",
426 TOTAL_MALLOC_LEN >> 10, addr_sp);
429 * (permanently) allocate a Board Info struct
430 * and a permanent copy of the "global" data
432 addr_sp -= sizeof (bd_t);
433 bd = (bd_t *) addr_sp;
435 debug ("Reserving %d Bytes for Board Info at: %08lx\n",
436 sizeof (bd_t), addr_sp);
437 addr_sp -= sizeof (gd_t);
438 id = (gd_t *) addr_sp;
439 debug ("Reserving %d Bytes for Global Data at: %08lx\n",
440 sizeof (gd_t), addr_sp);
443 * Finally, we set up a new (bigger) stack.
445 * Leave some safety gap for SP, force alignment on 16 byte boundary
446 * Clear initial stack frame
450 *((ulong *) addr_sp)-- = 0;
451 *((ulong *) addr_sp)-- = 0;
452 debug ("Stack Pointer at: %08lx\n", addr_sp);
455 * Save local variables to board info struct
458 bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
459 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
462 bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
463 bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
465 bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
466 bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
469 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
471 bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
473 #if defined(CONFIG_MPC5XXX)
474 bd->bi_mbar_base = CFG_MBAR; /* base of internal registers */
477 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
480 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
481 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
482 #if defined(CONFIG_8260) || defined(CONFIG_MPC8560)
483 bd->bi_cpmfreq = gd->cpm_clk;
484 bd->bi_brgfreq = gd->brg_clk;
485 bd->bi_sccfreq = gd->scc_clk;
486 bd->bi_vco = gd->vco_out;
487 #endif /* CONFIG_8260 */
488 #if defined(CONFIG_MPC5XXX)
489 bd->bi_ipbfreq = gd->ipb_clk;
490 bd->bi_pcifreq = gd->pci_clk;
491 #endif /* CONFIG_MPC5XXX */
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;
500 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
501 bd->bi_pci_busfreq = get_PCI_freq ();
504 bd->bi_opbfreq = CFG_OPB_FREQ;
506 bd->bi_opbfreq = 50000000;
508 bd->bi_iic_fast[0] = 0;
509 bd->bi_iic_fast[1] = 0;
513 debug ("New Stack Pointer is: %08lx\n", addr_sp);
518 post_bootmode_init();
519 post_run (NULL, POST_ROM | post_bootmode_get(0));
524 memcpy (id, (void *)gd, sizeof (gd_t));
526 relocate_code (addr_sp, id, addr);
528 /* NOTREACHED - relocate_code() does not return */
532 /************************************************************************
534 * This is the next part if the initialization sequence: we are now
535 * running from RAM and have a "normal" C environment, i. e. global
536 * data can be written, BSS has been cleared, the stack size in not
537 * that critical any more, etc.
539 ************************************************************************
542 void board_init_r (gd_t *id, ulong dest_addr)
544 DECLARE_GLOBAL_DATA_PTR;
549 extern void malloc_bin_reloc (void);
550 #ifndef CFG_ENV_IS_NOWHERE
551 extern char * env_name_spec;
558 gd = id; /* initialize RAM version of global data */
561 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
563 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
567 #if defined(CONFIG_BOARD_EARLY_INIT_R)
568 board_early_init_r ();
571 gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
573 monitor_flash_len = (ulong)&__init_end - dest_addr;
576 * We have to relocate the command table manually
578 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
580 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
582 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
583 cmdtp->name, (ulong) (cmdtp->cmd), addr);
586 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
588 addr = (ulong)(cmdtp->name) + gd->reloc_off;
589 cmdtp->name = (char *)addr;
592 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
593 cmdtp->usage = (char *)addr;
597 addr = (ulong)(cmdtp->help) + gd->reloc_off;
598 cmdtp->help = (char *)addr;
602 /* there are some other pointer constants we must deal with */
603 #ifndef CFG_ENV_IS_NOWHERE
604 env_name_spec += gd->reloc_off;
609 #ifdef CONFIG_LOGBUFFER
610 logbuff_init_ptrs ();
613 post_output_backlog ();
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(CFG_INIT_RAM_LOCK) && defined(CONFIG_E500)
624 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
627 #if defined(CONFIG_BAB7xx) || defined(CONFIG_CPC45)
629 * Do PCI configuration on BAB7xx and CPC45 _before_ the flash
630 * gets initialised, because we need the ISA resp. PCI_to_LOCAL bus
635 #if defined(CONFIG_BAB7xx)
637 * Initialise the ISA bridge
639 initialise_w83c553f ();
642 asm ("sync ; isync");
645 * Setup trap handlers
647 trap_init (dest_addr);
649 #if !defined(CFG_NO_FLASH)
652 if ((flash_size = flash_init ()) > 0) {
653 # ifdef CFG_FLASH_CHECKSUM
654 print_size (flash_size, "");
656 * Compute and print flash CRC if flashchecksum is set to 'y'
658 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
660 s = getenv ("flashchecksum");
661 if (s && (*s == 'y')) {
662 printf (" CRC: %08lX",
664 (const unsigned char *) CFG_FLASH_BASE,
669 # else /* !CFG_FLASH_CHECKSUM */
670 print_size (flash_size, "\n");
671 # endif /* CFG_FLASH_CHECKSUM */
677 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
678 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
679 # if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
680 bd->bi_flashoffset = 0;
681 # elif CFG_MONITOR_BASE == CFG_FLASH_BASE
682 bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */
684 bd->bi_flashoffset = 0;
686 #else /* CFG_NO_FLASH */
688 bd->bi_flashsize = 0;
689 bd->bi_flashstart = 0;
690 bd->bi_flashoffset = 0;
691 #endif /* !CFG_NO_FLASH */
695 /* initialize higher level parts of CPU like time base and timers */
700 /* initialize malloc() area */
705 # if !defined(CFG_ENV_IS_IN_EEPROM)
711 /* relocate environment function pointers etc. */
715 * Fill in missing fields of bd_info.
716 * We do this here, where we have "normal" access to the
717 * environment; we used to do this still running from ROM,
718 * where had to use getenv_r(), which can be pretty slow when
719 * the environment is in EEPROM.
721 s = getenv ("ethaddr");
722 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
724 board_get_enetaddr (bd->bi_enetaddr);
727 for (i = 0; i < 6; ++i) {
728 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
730 s = (*e) ? e + 1 : e;
733 if ((gd->board_type >> 16) == 2)
734 bd->bi_ethspeed = gd->board_type & 0xFFFF;
736 bd->bi_ethspeed = 0xFFFF;
740 load_sernum_ethaddr ();
743 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62) || defined(CONFIG_PPCHAMELEONEVB) || \
744 defined(CONFIG_MPC8540ADS) || defined(CONFIG_MPC8560ADS)
745 /* handle the 2nd ethernet address */
747 s = getenv ("eth1addr");
749 for (i = 0; i < 6; ++i) {
750 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
752 s = (*e) ? e + 1 : e;
755 #if defined(CFG_GT_6426x) || defined(CONFIG_MPC8540ADS) || defined(CONFIG_MPC8560ADS)
756 /* handle the 3rd ethernet address */
758 s = getenv ("eth2addr");
760 for (i = 0; i < 6; ++i) {
761 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
763 s = (*e) ? e + 1 : e;
768 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
770 load_sernum_ethaddr ();
773 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
777 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
779 * Do pci configuration
784 /** leave this here (after malloc(), environment and PCI are working) **/
785 /* Initialize devices */
788 /* Initialize the jump table for applications */
791 /* Initialize the console (after the relocation and devices init) */
794 #if defined(CONFIG_CCM) || \
795 defined(CONFIG_COGENT) || \
796 defined(CONFIG_CPCI405) || \
797 defined(CONFIG_EVB64260) || \
798 defined(CONFIG_KUP4K) || \
799 defined(CONFIG_LWMON) || \
800 defined(CONFIG_PCU_E) || \
801 defined(CONFIG_W7O) || \
802 defined(CONFIG_MISC_INIT_R)
803 /* miscellaneous platform dependent initialisations */
808 if (bd->bi_ethspeed != 0xFFFF)
809 hermes_start_lxt980 ((int) bd->bi_ethspeed);
812 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
813 defined(CONFIG_CCM) || \
814 defined(CONFIG_ELPT860) || \
815 defined(CONFIG_EP8260) || \
816 defined(CONFIG_IP860) || \
817 defined(CONFIG_IVML24) || \
818 defined(CONFIG_IVMS8) || \
819 defined(CONFIG_LWMON) || \
820 defined(CONFIG_MPC8260ADS) || \
821 defined(CONFIG_MPC8266ADS) || \
822 defined(CONFIG_MPC8560ADS) || \
823 defined(CONFIG_PCU_E) || \
824 defined(CONFIG_RPXSUPER) || \
825 defined(CONFIG_SPD823TS) )
828 debug ("Reset Ethernet PHY\n");
832 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
838 debug ("U-Boot relocated to %08lx\n", dest_addr);
845 /* Must happen after interrupts are initialized since
846 * an irq handler gets installed
848 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
849 serial_buffered_init();
852 #ifdef CONFIG_STATUS_LED
853 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
860 /* Insert function pointers now that we have relocated the code */
862 /* Initialize from environment */
863 if ((s = getenv ("loadaddr")) != NULL) {
864 load_addr = simple_strtoul (s, NULL, 16);
866 #if (CONFIG_COMMANDS & CFG_CMD_NET)
867 if ((s = getenv ("bootfile")) != NULL) {
868 copy_filename (BootFile, s, sizeof (BootFile));
870 #endif /* CFG_CMD_NET */
874 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
880 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
886 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
889 nand_init(); /* go init the NAND */
892 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
899 post_run (NULL, POST_RAM | post_bootmode_get(0));
902 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
908 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
910 # ifdef CONFIG_IDE_8xx_PCCARD
916 #endif /* CFG_CMD_IDE */
918 #ifdef CONFIG_LAST_STAGE_INIT
921 * Some parts can be only initialized if all others (like
922 * Interrupts) are up and running (i.e. the PC-style ISA
928 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
933 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
935 * Export available size of memory for Linux,
936 * taking into account the protected RAM at top of memory
944 if ((s = getenv ("pram")) != NULL) {
945 pram = simple_strtoul (s, NULL, 10);
952 #ifdef CONFIG_LOGBUFFER
953 /* Also take the logbuffer into account (pram is in kB) */
954 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
956 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
957 setenv ("mem", memsz);
966 #ifdef CONFIG_MODEM_SUPPORT
968 extern int do_mdm_init;
969 do_mdm_init = gd->do_mdm_init;
973 /* Initialization complete - start the monitor */
975 /* main_loop() can return to retry autoboot, if so just run it again. */
981 /* NOTREACHED - no way out of command loop except booting */
986 puts ("### ERROR ### Please RESET the board ###\n");
990 #ifdef CONFIG_MODEM_SUPPORT
991 /* called from main loop (common/main.c) */
992 extern void dbg(const char *fmt, ...);
998 extern char console_buffer[];
999 static inline void mdm_readline(char *buf, int bufsiz);
1000 extern void enable_putc(void);
1001 extern int hwflow_onoff(int);
1003 enable_putc(); /* enable serial_putc() */
1005 #ifdef CONFIG_HWFLOW
1006 init_str = getenv("mdm_flow_control");
1007 if (init_str && (strcmp(init_str, "rts/cts") == 0))
1014 sprintf(env_str, "mdm_init%d", i);
1015 if ((init_str = getenv(env_str)) != NULL) {
1016 serial_puts(init_str);
1019 mdm_readline(console_buffer, CFG_CBSIZE);
1020 dbg("ini%d: [%s]", i, console_buffer);
1022 if ((strcmp(console_buffer, "OK") == 0) ||
1023 (strcmp(console_buffer, "ERROR") == 0)) {
1024 dbg("ini%d: cmd done", i);
1026 } else /* in case we are originating call ... */
1027 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1028 dbg("ini%d: connect", i);
1033 break; /* no init string - stop modem init */
1040 /* final stage - wait for connect */
1041 for(;i > 1;) { /* if 'i' > 1 - wait for connection
1042 message from modem */
1043 mdm_readline(console_buffer, CFG_CBSIZE);
1044 dbg("ini_f: [%s]", console_buffer);
1045 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1046 dbg("ini_f: connected");
1054 /* 'inline' - We have to do it fast */
1055 static inline void mdm_readline(char *buf, int bufsiz)
1066 /* dbg("(%c)", c); */
1078 return; /* sanity check */
1088 #if 0 /* We could use plain global data, but the resulting code is bigger */
1090 * Pointer to initial global data area
1092 * Here we initialize it.
1094 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
1095 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
1096 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
1099 /************************************************************************/