2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * To match the U-Boot user interface on ARM platforms to the U-Boot
30 * standard (as on PPC platforms), some messages with debug character
31 * are removed from the default U-Boot build.
33 * Define DEBUG here if you want additional info as shown below
34 * printed upon startup:
36 * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
44 #include <stdio_dev.h>
45 #include <timestamp.h>
50 #include <onenand_uboot.h>
53 #ifdef CONFIG_BITBANGMII
57 #ifdef CONFIG_DRIVER_SMC91111
58 #include "../drivers/net/smc91111.h"
60 #ifdef CONFIG_DRIVER_LAN91C96
61 #include "../drivers/net/lan91c96.h"
64 DECLARE_GLOBAL_DATA_PTR;
66 ulong monitor_flash_len;
68 #ifdef CONFIG_HAS_DATAFLASH
69 extern int AT91F_DataflashInit(void);
70 extern void dataflash_print_info(void);
73 #ifndef CONFIG_IDENT_STRING
74 #define CONFIG_IDENT_STRING ""
77 const char version_string[] =
78 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
80 #ifdef CONFIG_DRIVER_RTL8019
81 extern void rtl8019_get_enetaddr (uchar * addr);
84 #if defined(CONFIG_HARD_I2C) || \
85 defined(CONFIG_SOFT_I2C)
90 /************************************************************************
91 * Coloured LED functionality
92 ************************************************************************
93 * May be supplied by boards if desired
95 void inline __coloured_LED_init (void) {}
96 void coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
97 void inline __red_LED_on (void) {}
98 void red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
99 void inline __red_LED_off(void) {}
100 void red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
101 void inline __green_LED_on(void) {}
102 void green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
103 void inline __green_LED_off(void) {}
104 void green_LED_off(void) __attribute__((weak, alias("__green_LED_off")));
105 void inline __yellow_LED_on(void) {}
106 void yellow_LED_on(void) __attribute__((weak, alias("__yellow_LED_on")));
107 void inline __yellow_LED_off(void) {}
108 void yellow_LED_off(void) __attribute__((weak, alias("__yellow_LED_off")));
109 void inline __blue_LED_on(void) {}
110 void blue_LED_on(void) __attribute__((weak, alias("__blue_LED_on")));
111 void inline __blue_LED_off(void) {}
112 void blue_LED_off(void) __attribute__((weak, alias("__blue_LED_off")));
114 /************************************************************************
116 ************************************************************************
117 * Some of this code should be moved into the core functions,
118 * or dropped completely,
119 * but let's get it working (again) first...
122 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
123 #define CONFIG_BAUDRATE 115200
125 static int init_baudrate (void)
127 char tmp[64]; /* long enough for environment variables */
128 int i = getenv_f("baudrate", tmp, sizeof (tmp));
130 #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
131 gd->baudrate = (i > 0)
133 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
135 ? (int) simple_strtoul (tmp, NULL, 10)
141 static int display_banner (void)
143 printf ("\n\n%s\n\n", version_string);
144 debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
145 #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
150 _bss_start, _bss_end);
151 #ifdef CONFIG_MODEM_SUPPORT
152 debug ("Modem Support enabled\n");
154 #ifdef CONFIG_USE_IRQ
155 debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
156 debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
163 * WARNING: this code looks "cleaner" than the PowerPC version, but
164 * has the disadvantage that you either get nothing, or everything.
165 * On PowerPC, you might see "DRAM: " before the system hangs - which
166 * gives a simple yet clear indication which part of the
167 * initialization if failing.
169 static int display_dram_config (void)
174 puts ("RAM Configuration:\n");
176 for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
177 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
178 print_size (gd->bd->bi_dram[i].size, "\n");
183 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
184 size += gd->bd->bi_dram[i].size;
187 print_size(size, "\n");
193 #if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
194 #ifndef CONFIG_SYS_NO_FLASH
195 static void display_flash_config (ulong size)
198 print_size (size, "\n");
200 #endif /* CONFIG_SYS_NO_FLASH */
203 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
204 static int init_func_i2c (void)
207 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
213 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
215 static int arm_pci_init(void)
220 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
223 * Breathe some life into the board...
225 * Initialize a serial port as console, and carry out some hardware
228 * The first part of initialization is running from Flash memory;
229 * its main purpose is to initialize the RAM so that we
230 * can relocate the monitor code to RAM.
234 * All attempts to come up with a "common" initialization sequence
235 * that works for all boards and architectures failed: some of the
236 * requirements are just _too_ different. To get rid of the resulting
237 * mess of board dependent #ifdef'ed code we now make the whole
238 * initialization sequence configurable to the user.
240 * The requirements for any new initalization function is simple: it
241 * receives a pointer to the "global data" structure as it's only
242 * argument, and returns an integer return code, where 0 means
243 * "continue" and != 0 means "fatal error, hang the system".
245 typedef int (init_fnc_t) (void);
247 int print_cpuinfo (void);
249 #if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
250 init_fnc_t *init_sequence[] = {
251 #if defined(CONFIG_ARCH_CPU_INIT)
252 arch_cpu_init, /* basic arch cpu dependent setup */
254 board_init, /* basic board dependent setup */
255 #if defined(CONFIG_USE_IRQ)
256 interrupt_init, /* set up exceptions */
258 timer_init, /* initialize timer */
259 #ifdef CONFIG_FSL_ESDHC
262 env_init, /* initialize environment */
263 init_baudrate, /* initialze baudrate settings */
264 serial_init, /* serial communications setup */
265 console_init_f, /* stage 1 init of console */
266 display_banner, /* say that we are here */
267 #if defined(CONFIG_DISPLAY_CPUINFO)
268 print_cpuinfo, /* display cpu info (and speed) */
270 #if defined(CONFIG_DISPLAY_BOARDINFO)
271 checkboard, /* display board info */
273 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
276 dram_init, /* configure available RAM banks */
277 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
284 void start_armboot (void)
286 init_fnc_t **init_fnc_ptr;
288 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
292 /* Pointer is writable since we allocated a register for it */
293 gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
294 /* compiler optimization barrier needed for GCC >= 3.4 */
295 __asm__ __volatile__("": : :"memory");
297 memset ((void*)gd, 0, sizeof (gd_t));
298 gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
299 memset (gd->bd, 0, sizeof (bd_t));
301 gd->flags |= GD_FLG_RELOC;
303 monitor_flash_len = _bss_start - _armboot_start;
305 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
306 if ((*init_fnc_ptr)() != 0) {
311 /* armboot_start is defined in the board-specific linker script */
312 mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
313 CONFIG_SYS_MALLOC_LEN);
315 #ifndef CONFIG_SYS_NO_FLASH
316 /* configure available FLASH banks */
317 display_flash_config (flash_init ());
318 #endif /* CONFIG_SYS_NO_FLASH */
322 # define PAGE_SIZE 4096
325 * reserve memory for VFD display (always full pages)
327 /* bss_end is defined in the board-specific linker script */
328 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
331 #endif /* CONFIG_VFD */
334 /* board init may have inited fb_base */
337 # define PAGE_SIZE 4096
340 * reserve memory for LCD display (always full pages)
342 /* bss_end is defined in the board-specific linker script */
343 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
347 #endif /* CONFIG_LCD */
349 #if defined(CONFIG_CMD_NAND)
351 nand_init(); /* go init the NAND */
354 #if defined(CONFIG_CMD_ONENAND)
358 #ifdef CONFIG_HAS_DATAFLASH
359 AT91F_DataflashInit();
360 dataflash_print_info();
363 #ifdef CONFIG_GENERIC_MMC
365 * MMC initialization is called before relocating env.
366 * Thus It is required that operations like pin multiplexer
367 * be put in board_init.
370 mmc_initialize (gd->bd);
373 /* initialize environment */
377 /* must do this after the framebuffer is allocated */
379 #endif /* CONFIG_VFD */
381 #ifdef CONFIG_SERIAL_MULTI
386 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
388 stdio_init (); /* get the devices list going. */
392 #if defined(CONFIG_API)
397 console_init_r (); /* fully init console as a device */
399 #if defined(CONFIG_ARCH_MISC_INIT)
400 /* miscellaneous arch dependent initialisations */
403 #if defined(CONFIG_MISC_INIT_R)
404 /* miscellaneous platform dependent initialisations */
408 /* enable exceptions */
409 enable_interrupts ();
411 /* Perform network card initialisation if necessary */
413 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
414 /* XXX: this needs to be moved to board init */
415 if (getenv ("ethaddr")) {
417 eth_getenv_enetaddr("ethaddr", enetaddr);
418 smc_set_mac_addr(enetaddr);
420 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
422 /* Initialize from environment */
423 if ((s = getenv ("loadaddr")) != NULL) {
424 load_addr = simple_strtoul (s, NULL, 16);
426 #if defined(CONFIG_CMD_NET)
427 if ((s = getenv ("bootfile")) != NULL) {
428 copy_filename (BootFile, s, sizeof (BootFile));
432 #ifdef BOARD_LATE_INIT
436 #ifdef CONFIG_BITBANGMII
439 #if defined(CONFIG_CMD_NET)
440 #if defined(CONFIG_NET_MULTI)
443 eth_initialize(gd->bd);
444 #if defined(CONFIG_RESET_PHY_R)
445 debug ("Reset Ethernet PHY\n");
449 /* main_loop() can return to retry autoboot, if so just run it again. */
454 /* NOTREACHED - no way out of command loop except booting */
457 void __dram_init_banksize(void)
459 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
460 gd->bd->bi_dram[0].size = gd->ram_size;
462 void dram_init_banksize(void)
463 __attribute__((weak, alias("__dram_init_banksize")));
465 init_fnc_t *init_sequence[] = {
466 #if defined(CONFIG_ARCH_CPU_INIT)
467 arch_cpu_init, /* basic arch cpu dependent setup */
469 #if defined(CONFIG_BOARD_EARLY_INIT_F)
472 timer_init, /* initialize timer */
473 #ifdef CONFIG_FSL_ESDHC
476 env_init, /* initialize environment */
477 init_baudrate, /* initialze baudrate settings */
478 serial_init, /* serial communications setup */
479 console_init_f, /* stage 1 init of console */
480 display_banner, /* say that we are here */
481 #if defined(CONFIG_DISPLAY_CPUINFO)
482 print_cpuinfo, /* display cpu info (and speed) */
484 #if defined(CONFIG_DISPLAY_BOARDINFO)
485 checkboard, /* display board info */
487 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
490 dram_init, /* configure available RAM banks */
491 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
497 void board_init_f (ulong bootflag)
500 init_fnc_t **init_fnc_ptr;
504 /* Pointer is writable since we allocated a register for it */
505 gd = (gd_t *) (CONFIG_SYS_INIT_SP_ADDR);
506 /* compiler optimization barrier needed for GCC >= 3.4 */
507 __asm__ __volatile__("": : :"memory");
509 memset ((void*)gd, 0, sizeof (gd_t));
511 gd->mon_len = _bss_end - _TEXT_BASE;
513 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
514 if ((*init_fnc_ptr)() != 0) {
519 debug ("monitor len: %08lX\n", gd->mon_len);
521 * Ram is setup, size stored in gd !!
523 debug ("ramsize: %08lX\n", gd->ram_size);
524 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
526 * Subtract specified amount of memory to hide so that it won't
527 * get "touched" at all by U-Boot. By fixing up gd->ram_size
528 * the Linux kernel should now get passed the now "corrected"
529 * memory size and won't touch it either. This should work
530 * for arch/ppc and arch/powerpc. Only Linux board ports in
531 * arch/powerpc with bootwrapper support, that recalculate the
532 * memory size from the SDRAM controller setup will have to
535 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
538 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
540 #ifdef CONFIG_LOGBUFFER
541 #ifndef CONFIG_ALT_LB_ADDR
542 /* reserve kernel log buffer */
543 addr -= (LOGBUFF_RESERVE);
544 debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
550 * reserve protected RAM
552 i = getenv_r ("pram", (char *)tmp, sizeof (tmp));
553 reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM;
554 addr -= (reg << 10); /* size is in kB */
555 debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
556 #endif /* CONFIG_PRAM */
558 #if !(defined(CONFIG_SYS_NO_ICACHE) && defined(CONFIG_SYS_NO_DCACHE))
559 /* reserve TLB table */
562 /* round down to next 64 kB limit */
563 addr &= ~(0x10000 - 1);
566 debug ("TLB table at: %08lx\n", addr);
569 /* round down to next 4 kB limit */
571 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
575 # define PAGE_SIZE 4096
578 * reserve memory for VFD display (always full pages)
580 addr -= vfd_setmem (addr);
582 #endif /* CONFIG_VFD */
585 /* reserve memory for LCD display (always full pages) */
586 addr = lcd_setmem (addr);
588 #endif /* CONFIG_LCD */
591 * reserve memory for U-Boot code, data & bss
592 * round down to next 4 kB limit
597 debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
599 #ifndef CONFIG_PRELOADER
601 * reserve memory for malloc() arena
603 addr_sp = addr - TOTAL_MALLOC_LEN;
604 debug ("Reserving %dk for malloc() at: %08lx\n",
605 TOTAL_MALLOC_LEN >> 10, addr_sp);
607 * (permanently) allocate a Board Info struct
608 * and a permanent copy of the "global" data
610 addr_sp -= sizeof (bd_t);
611 bd = (bd_t *) addr_sp;
613 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
614 sizeof (bd_t), addr_sp);
615 addr_sp -= sizeof (gd_t);
616 id = (gd_t *) addr_sp;
617 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
618 sizeof (gd_t), addr_sp);
620 /* setup stackpointer for exeptions */
621 gd->irq_sp = addr_sp;
622 #ifdef CONFIG_USE_IRQ
623 addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
624 debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n",
625 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
627 /* leave 3 words for abort-stack */
630 /* 8-byte alignment for ABI compliance */
633 addr_sp += 128; /* leave 32 words for abort-stack */
634 gd->irq_sp = addr_sp;
637 debug ("New Stack Pointer is: %08lx\n", addr_sp);
640 post_bootmode_init();
641 post_run (NULL, POST_ROM | post_bootmode_get(0));
644 gd->bd->bi_baudrate = gd->baudrate;
645 /* Ram ist board specific, so move it to board code ... */
646 dram_init_banksize();
647 display_dram_config(); /* and display it */
649 gd->relocaddr = addr;
650 gd->start_addr_sp = addr_sp;
651 gd->reloc_off = addr - _TEXT_BASE;
652 debug ("relocation Offset is: %08lx\n", gd->reloc_off);
653 memcpy (id, (void *)gd, sizeof (gd_t));
655 relocate_code (addr_sp, id, addr);
657 /* NOTREACHED - relocate_code() does not return */
660 #if !defined(CONFIG_SYS_NO_FLASH)
661 static char *failed = "*** failed ***\n";
664 /************************************************************************
666 * This is the next part if the initialization sequence: we are now
667 * running from RAM and have a "normal" C environment, i. e. global
668 * data can be written, BSS has been cleared, the stack size in not
669 * that critical any more, etc.
671 ************************************************************************
673 void board_init_r (gd_t *id, ulong dest_addr)
678 #if !defined(CONFIG_SYS_NO_FLASH)
681 #if !defined(CONFIG_RELOC_FIXUP_WORKS)
682 extern void malloc_bin_reloc (void);
683 #if defined(CONFIG_CMD_BMP)
684 extern void bmp_reloc(void);
686 #if defined(CONFIG_CMD_I2C)
687 extern void i2c_reloc(void);
694 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
696 monitor_flash_len = _bss_start - _TEXT_BASE;
697 debug ("monitor flash len: %08lX\n", monitor_flash_len);
698 board_init(); /* Setup chipselects */
700 #ifdef CONFIG_SERIAL_MULTI
704 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
706 #if !defined(CONFIG_RELOC_FIXUP_WORKS)
708 * We have to relocate the command table manually
710 fixup_cmdtable(&__u_boot_cmd_start,
711 (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
712 #if defined(CONFIG_CMD_BMP)
715 #if defined(CONFIG_CMD_I2C)
718 #endif /* !defined(CONFIG_RELOC_FIXUP_WORKS) */
720 #ifdef CONFIG_LOGBUFFER
721 logbuff_init_ptrs ();
724 post_output_backlog ();
725 #ifndef CONFIG_RELOC_FIXUP_WORKS
730 /* The Malloc area is immediately below the monitor copy in DRAM */
731 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
732 mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
733 #if !defined(CONFIG_RELOC_FIXUP_WORKS)
737 #if !defined(CONFIG_SYS_NO_FLASH)
740 if ((flash_size = flash_init ()) > 0) {
741 # ifdef CONFIG_SYS_FLASH_CHECKSUM
742 print_size (flash_size, "");
744 * Compute and print flash CRC if flashchecksum is set to 'y'
746 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
748 s = getenv ("flashchecksum");
749 if (s && (*s == 'y')) {
750 printf (" CRC: %08X",
751 crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
755 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
756 print_size (flash_size, "\n");
757 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
764 #if defined(CONFIG_CMD_NAND)
766 nand_init(); /* go init the NAND */
769 #if defined(CONFIG_CMD_ONENAND)
773 #ifdef CONFIG_HAS_DATAFLASH
774 AT91F_DataflashInit();
775 dataflash_print_info();
778 /* initialize environment */
782 /* must do this after the framebuffer is allocated */
784 #endif /* CONFIG_VFD */
787 gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
789 stdio_init (); /* get the devices list going. */
793 #if defined(CONFIG_API)
798 console_init_r (); /* fully init console as a device */
800 #if defined(CONFIG_ARCH_MISC_INIT)
801 /* miscellaneous arch dependent initialisations */
804 #if defined(CONFIG_MISC_INIT_R)
805 /* miscellaneous platform dependent initialisations */
809 /* set up exceptions */
811 /* enable exceptions */
812 enable_interrupts ();
814 /* Perform network card initialisation if necessary */
815 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
816 /* XXX: this needs to be moved to board init */
817 if (getenv ("ethaddr")) {
819 eth_getenv_enetaddr("ethaddr", enetaddr);
820 smc_set_mac_addr(enetaddr);
822 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
824 /* Initialize from environment */
825 if ((s = getenv ("loadaddr")) != NULL) {
826 load_addr = simple_strtoul (s, NULL, 16);
828 #if defined(CONFIG_CMD_NET)
829 if ((s = getenv ("bootfile")) != NULL) {
830 copy_filename (BootFile, s, sizeof (BootFile));
834 #ifdef BOARD_LATE_INIT
838 #ifdef CONFIG_GENERIC_MMC
840 mmc_initialize (gd->bd);
843 #ifdef CONFIG_BITBANGMII
846 #if defined(CONFIG_CMD_NET)
847 #if defined(CONFIG_NET_MULTI)
850 eth_initialize(gd->bd);
851 #if defined(CONFIG_RESET_PHY_R)
852 debug ("Reset Ethernet PHY\n");
858 post_run (NULL, POST_RAM | post_bootmode_get(0));
861 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
863 * Export available size of memory for Linux,
864 * taking into account the protected RAM at top of memory
872 if ((s = getenv ("pram")) != NULL) {
873 pram = simple_strtoul (s, NULL, 10);
880 #ifdef CONFIG_LOGBUFFER
881 #ifndef CONFIG_ALT_LB_ADDR
882 /* Also take the logbuffer into account (pram is in kB) */
883 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
886 sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
887 setenv ("mem", (char *)memsz);
891 /* main_loop() can return to retry autoboot, if so just run it again. */
896 /* NOTREACHED - no way out of command loop except booting */
898 #endif /* defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
902 puts ("### ERROR ### Please RESET the board ###\n");