2 * (C) Copyright 2000-2011
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 #include <stdio_dev.h>
22 #if defined(CONFIG_CMD_IDE)
25 #if defined(CONFIG_CMD_SCSI)
28 #if defined(CONFIG_CMD_KGDB)
31 #ifdef CONFIG_STATUS_LED
32 #include <status_led.h>
35 #ifdef CONFIG_GENERIC_MMC
39 #ifdef CONFIG_SYS_ALLOC_DPRAM
40 #if !defined(CONFIG_CPM2)
45 #if defined(CONFIG_BAB7xx)
49 #if defined(CONFIG_POST)
52 #if defined(CONFIG_LOGBUFFER)
55 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
56 #include <asm/cache.h>
62 #ifdef CONFIG_ADDR_MAP
70 #ifdef CONFIG_BITBANGMII
74 #ifdef CONFIG_SYS_UPDATE_FLASH_SIZE
75 extern int update_flash_size(int flash_size);
78 #if defined(CONFIG_SC3)
79 extern void sc3_read_eeprom(void);
82 #if defined(CONFIG_CMD_DOC)
85 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
91 static char *failed = "*** failed ***\n";
93 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
94 extern flash_info_t flash_info[];
97 #if defined(CONFIG_START_IDE)
98 extern int board_start_ide(void);
100 #include <environment.h>
102 DECLARE_GLOBAL_DATA_PTR;
104 #if !defined(CONFIG_SYS_MEM_TOP_HIDE)
105 #define CONFIG_SYS_MEM_TOP_HIDE 0
108 extern ulong __init_end;
109 extern ulong __bss_end;
110 ulong monitor_flash_len;
112 #if defined(CONFIG_CMD_BEDBUG)
113 #include <bedbug/type.h>
121 * All attempts to come up with a "common" initialization sequence
122 * that works for all boards and architectures failed: some of the
123 * requirements are just _too_ different. To get rid of the resulting
124 * mess of board dependend #ifdef'ed code we now make the whole
125 * initialization sequence configurable to the user.
127 * The requirements for any new initalization function is simple: it
128 * receives a pointer to the "global data" structure as it's only
129 * argument, and returns an integer return code, where 0 means
130 * "continue" and != 0 means "fatal error, hang the system".
132 typedef int (init_fnc_t)(void);
137 * Some of this code should be moved into the core functions,
138 * but let's get it working (again) first...
141 static int init_baudrate(void)
143 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
147 /***********************************************************************/
149 static void __board_add_ram_info(int use_default)
151 /* please define platform specific board_add_ram_info() */
154 void board_add_ram_info(int)
155 __attribute__ ((weak, alias("__board_add_ram_info")));
157 static int __board_flash_wp_on(void)
160 * Most flashes can't be detected when write protection is enabled,
161 * so provide a way to let U-Boot gracefully ignore write protected
167 int board_flash_wp_on(void)
168 __attribute__ ((weak, alias("__board_flash_wp_on")));
170 static void __cpu_secondary_init_r(void)
174 void cpu_secondary_init_r(void)
175 __attribute__ ((weak, alias("__cpu_secondary_init_r")));
177 static int init_func_ram(void)
179 #ifdef CONFIG_BOARD_TYPES
180 int board_type = gd->board_type;
182 int board_type = 0; /* use dummy arg */
186 gd->ram_size = initdram(board_type);
188 if (gd->ram_size > 0) {
189 print_size(gd->ram_size, "");
190 board_add_ram_info(0);
198 /***********************************************************************/
200 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
201 static int init_func_i2c(void)
204 #ifdef CONFIG_SYS_I2C
207 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
214 #if defined(CONFIG_HARD_SPI)
215 static int init_func_spi(void)
224 /***********************************************************************/
226 #if defined(CONFIG_WATCHDOG)
227 int init_func_watchdog_init(void)
229 puts(" Watchdog enabled\n");
234 int init_func_watchdog_reset(void)
239 #endif /* CONFIG_WATCHDOG */
242 * Initialization sequence
245 static init_fnc_t *init_sequence[] = {
246 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
249 #if defined(CONFIG_BOARD_EARLY_INIT_F)
252 #if !defined(CONFIG_8xx_CPUCLK_DEFAULT)
253 get_clocks, /* get CPU and bus clocks (etc.) */
254 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
255 && !defined(CONFIG_TQM885D)
256 adjust_sdram_tbs_8xx,
260 #ifdef CONFIG_SYS_ALLOC_DPRAM
261 #if !defined(CONFIG_CPM2)
265 #if defined(CONFIG_BOARD_POSTCLK_INIT)
269 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
270 /* get CPU and bus clocks according to the environment variable */
272 /* adjust sdram refresh rate according to the new clock */
280 #if defined(CONFIG_8260)
283 #endif /* CONFIG_8260 */
284 #if defined(CONFIG_MPC83xx)
288 #if defined(CONFIG_MPC5xxx)
290 #endif /* CONFIG_MPC5xxx */
292 INIT_FUNC_WATCHDOG_INIT
293 #if defined(CONFIG_MISC_INIT_F)
296 INIT_FUNC_WATCHDOG_RESET
297 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
300 #if defined(CONFIG_HARD_SPI)
306 INIT_FUNC_WATCHDOG_RESET
308 #if defined(CONFIG_SYS_DRAM_TEST)
310 #endif /* CONFIG_SYS_DRAM_TEST */
311 INIT_FUNC_WATCHDOG_RESET
312 NULL, /* Terminate this list */
315 ulong get_effective_memsize(void)
317 #ifndef CONFIG_VERY_BIG_RAM
320 /* limit stack to what we can reasonable map */
321 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
322 CONFIG_MAX_MEM_MAPPED : gd->ram_size);
326 static int __fixup_cpu(void)
331 int fixup_cpu(void) __attribute__((weak, alias("__fixup_cpu")));
334 * This is the first part of the initialization sequence that is
335 * implemented in C, but still running from ROM.
337 * The main purpose is to provide a (serial) console interface as
338 * soon as possible (so we can see any error messages), and to
339 * initialize the RAM so that we can relocate the monitor code to
342 * Be aware of the restrictions: global data is read-only, BSS is not
343 * initialized, and stack space is limited to a few kB.
346 #ifdef CONFIG_LOGBUFFER
347 unsigned long logbuffer_base(void)
349 return CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - LOGBUFF_LEN;
353 void board_init_f(ulong bootflag)
356 ulong len, addr, addr_sp;
359 init_fnc_t **init_fnc_ptr;
365 /* Pointer is writable since we allocated a register for it */
366 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
367 /* compiler optimization barrier needed for GCC >= 3.4 */
368 __asm__ __volatile__("":::"memory");
370 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
371 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
372 !defined(CONFIG_MPC86xx)
373 /* Clear initial global data */
374 memset((void *) gd, 0, sizeof(gd_t));
377 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr)
378 if ((*init_fnc_ptr) () != 0)
382 post_bootmode_init();
383 post_run(NULL, POST_ROM | post_bootmode_get(NULL));
389 * Now that we have DRAM mapped and working, we can
390 * relocate the code and continue running from DRAM.
392 * Reserve memory at end of RAM for (top down in that order):
393 * - area that won't get touched by U-Boot and Linux (optional)
394 * - kernel log buffer
398 * - board info struct
400 len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
403 * Subtract specified amount of memory to hide so that it won't
404 * get "touched" at all by U-Boot. By fixing up gd->ram_size
405 * the Linux kernel should now get passed the now "corrected"
406 * memory size and won't touch it either. This should work
407 * for arch/ppc and arch/powerpc. Only Linux board ports in
408 * arch/powerpc with bootwrapper support, that recalculate the
409 * memory size from the SDRAM controller setup will have to
412 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
414 addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
416 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
418 * We need to make sure the location we intend to put secondary core
419 * boot code is reserved and not used by any part of u-boot
421 if (addr > determine_mp_bootpg(NULL)) {
422 addr = determine_mp_bootpg(NULL);
423 debug("Reserving MP boot page to %08lx\n", addr);
427 #ifdef CONFIG_LOGBUFFER
428 #ifndef CONFIG_ALT_LB_ADDR
429 /* reserve kernel log buffer */
430 addr -= (LOGBUFF_RESERVE);
431 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
438 * reserve protected RAM
440 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
441 addr -= (reg << 10); /* size is in kB */
442 debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
443 #endif /* CONFIG_PRAM */
445 /* round down to next 4 kB limit */
447 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
450 #ifdef CONFIG_FB_ADDR
451 gd->fb_base = CONFIG_FB_ADDR;
453 /* reserve memory for LCD display (always full pages) */
454 addr = lcd_setmem(addr);
456 #endif /* CONFIG_FB_ADDR */
457 #endif /* CONFIG_LCD */
459 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
460 /* reserve memory for video display (always full pages) */
461 addr = video_setmem(addr);
463 #endif /* CONFIG_VIDEO */
466 * reserve memory for U-Boot code, data & bss
467 * round down to next 4 kB limit
472 /* round down to next 64 kB limit so that IVPR stays aligned */
473 addr &= ~(65536 - 1);
476 debug("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
479 * reserve memory for malloc() arena
481 addr_sp = addr - TOTAL_MALLOC_LEN;
482 debug("Reserving %dk for malloc() at: %08lx\n",
483 TOTAL_MALLOC_LEN >> 10, addr_sp);
486 * (permanently) allocate a Board Info struct
487 * and a permanent copy of the "global" data
489 addr_sp -= sizeof(bd_t);
490 bd = (bd_t *) addr_sp;
491 memset(bd, 0, sizeof(bd_t));
493 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
494 sizeof(bd_t), addr_sp);
495 addr_sp -= sizeof(gd_t);
496 id = (gd_t *) addr_sp;
497 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
498 sizeof(gd_t), addr_sp);
501 * Finally, we set up a new (bigger) stack.
503 * Leave some safety gap for SP, force alignment on 16 byte boundary
504 * Clear initial stack frame
508 s = (ulong *) addr_sp;
509 *s = 0; /* Terminate back chain */
510 *++s = 0; /* NULL return address */
511 debug("Stack Pointer at: %08lx\n", addr_sp);
514 * Save local variables to board info struct
517 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
518 bd->bi_memsize = gd->ram_size; /* size in bytes */
520 #ifdef CONFIG_SYS_SRAM_BASE
521 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
522 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
525 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
526 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
527 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
529 #if defined(CONFIG_MPC5xxx)
530 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
532 #if defined(CONFIG_MPC83xx)
533 bd->bi_immrbar = CONFIG_SYS_IMMR;
537 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
538 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
539 #if defined(CONFIG_CPM2)
540 bd->bi_cpmfreq = gd->arch.cpm_clk;
541 bd->bi_brgfreq = gd->arch.brg_clk;
542 bd->bi_sccfreq = gd->arch.scc_clk;
543 bd->bi_vco = gd->arch.vco_out;
544 #endif /* CONFIG_CPM2 */
545 #if defined(CONFIG_MPC512X)
546 bd->bi_ipsfreq = gd->arch.ips_clk;
547 #endif /* CONFIG_MPC512X */
548 #if defined(CONFIG_MPC5xxx)
549 bd->bi_ipbfreq = gd->arch.ipb_clk;
550 bd->bi_pcifreq = gd->pci_clk;
551 #endif /* CONFIG_MPC5xxx */
552 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
554 #ifdef CONFIG_SYS_EXTBDINFO
555 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
556 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
557 sizeof(bd->bi_r_version));
559 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
560 bd->bi_plb_busfreq = gd->bus_clk;
561 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
562 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
563 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
564 bd->bi_pci_busfreq = get_PCI_freq();
565 bd->bi_opbfreq = get_OPB_freq();
566 #elif defined(CONFIG_XILINX_405)
567 bd->bi_pci_busfreq = get_PCI_freq();
571 debug("New Stack Pointer is: %08lx\n", addr_sp);
575 gd->relocaddr = addr; /* Store relocation addr, useful for debug */
577 memcpy(id, (void *) gd, sizeof(gd_t));
579 relocate_code(addr_sp, id, addr);
581 /* NOTREACHED - relocate_code() does not return */
585 * This is the next part if the initialization sequence: we are now
586 * running from RAM and have a "normal" C environment, i. e. global
587 * data can be written, BSS has been cleared, the stack size in not
588 * that critical any more, etc.
590 void board_init_r(gd_t *id, ulong dest_addr)
595 #ifndef CONFIG_SYS_NO_FLASH
599 gd = id; /* initialize RAM version of global data */
602 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
604 /* The Malloc area is immediately below the monitor copy in DRAM */
605 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
607 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
609 * The gd->arch.cpu pointer is set to an address in flash before
610 * relocation. We need to update it to point to the same CPU entry
613 gd->arch.cpu += dest_addr - CONFIG_SYS_MONITOR_BASE;
616 * If we didn't know the cpu mask & # cores, we can save them of
617 * now rather than 'computing' them constantly
622 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
624 * Some systems need to relocate the env_addr pointer early because the
625 * location it points to will get invalidated before env_relocate is
626 * called. One example is on systems that might use a L2 or L3 cache
627 * in SRAM mode and initialize that cache from SRAM mode back to being
628 * a cache in cpu_init_r.
630 gd->env_addr += dest_addr - CONFIG_SYS_MONITOR_BASE;
635 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
640 * Setup trap handlers
642 trap_init(dest_addr);
644 #ifdef CONFIG_ADDR_MAP
648 #if defined(CONFIG_BOARD_EARLY_INIT_R)
649 board_early_init_r();
652 monitor_flash_len = (ulong)&__init_end - dest_addr;
656 #ifdef CONFIG_LOGBUFFER
660 post_output_backlog();
665 #if defined(CONFIG_SYS_DELAYED_ICACHE)
666 icache_enable(); /* it's time to enable the instruction cache */
669 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
670 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
673 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
675 * Do early PCI configuration _before_ the flash gets initialised,
676 * because PCU ressources are crucial for flash access on some boards.
680 #if defined(CONFIG_WINBOND_83C553)
682 * Initialise the ISA bridge
684 initialise_w83c553f();
689 mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
691 #if !defined(CONFIG_SYS_NO_FLASH)
694 if (board_flash_wp_on()) {
695 printf("Uninitialized - Write Protect On\n");
696 /* Since WP is on, we can't find real size. Set to 0 */
698 } else if ((flash_size = flash_init()) > 0) {
699 #ifdef CONFIG_SYS_FLASH_CHECKSUM
700 print_size(flash_size, "");
702 * Compute and print flash CRC if flashchecksum is set to 'y'
704 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
706 if (getenv_yesno("flashchecksum") == 1) {
709 (const unsigned char *)
710 CONFIG_SYS_FLASH_BASE, flash_size)
714 #else /* !CONFIG_SYS_FLASH_CHECKSUM */
715 print_size(flash_size, "\n");
716 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
722 /* update start of FLASH memory */
723 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
724 /* size of FLASH memory (final value) */
725 bd->bi_flashsize = flash_size;
727 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
728 /* Make a update of the Memctrl. */
729 update_flash_size(flash_size);
733 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
734 /* flash mapped at end of memory map */
735 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
736 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
737 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
739 #endif /* !CONFIG_SYS_NO_FLASH */
743 /* initialize higher level parts of CPU like time base and timers */
749 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
755 #if defined(CONFIG_CMD_NAND)
758 nand_init(); /* go init the NAND */
761 #ifdef CONFIG_GENERIC_MMC
763 * MMC initialization is called before relocating env.
764 * Thus It is required that operations like pin multiplexer
765 * be put in board_init.
772 /* relocate environment function pointers etc. */
776 * after non-volatile devices & environment is setup and cpu code have
777 * another round to deal with any initialization that might require
778 * full access to the environment or loading of some image (firmware)
779 * from a non-volatile device
781 cpu_secondary_init_r();
784 * Fill in missing fields of bd_info.
785 * We do this here, where we have "normal" access to the
786 * environment; we used to do this still running from ROM,
787 * where had to use getenv_f(), which can be pretty slow when
788 * the environment is in EEPROM.
791 #if defined(CONFIG_SYS_EXTBDINFO)
792 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
793 #if defined(CONFIG_I2CFAST)
795 * set bi_iic_fast for linux taking environment variable
796 * "i2cfast" into account
799 if (getenv_yesno("i2cfast") == 1) {
800 bd->bi_iic_fast[0] = 1;
801 bd->bi_iic_fast[1] = 1;
804 #endif /* CONFIG_I2CFAST */
805 #endif /* CONFIG_405GP, CONFIG_405EP */
806 #endif /* CONFIG_SYS_EXTBDINFO */
808 #if defined(CONFIG_SC3)
812 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
813 mac_read_from_eeprom();
817 if ((gd->board_type >> 16) == 2)
818 bd->bi_ethspeed = gd->board_type & 0xFFFF;
820 bd->bi_ethspeed = 0xFFFF;
823 #ifdef CONFIG_CMD_NET
824 /* kept around for legacy kernels only ... ignore the next section */
825 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
826 #ifdef CONFIG_HAS_ETH1
827 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
829 #ifdef CONFIG_HAS_ETH2
830 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
832 #ifdef CONFIG_HAS_ETH3
833 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
835 #ifdef CONFIG_HAS_ETH4
836 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
838 #ifdef CONFIG_HAS_ETH5
839 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
841 #endif /* CONFIG_CMD_NET */
845 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
847 * Do pci configuration
852 /** leave this here (after malloc(), environment and PCI are working) **/
853 /* Initialize stdio devices */
856 /* Initialize the jump table for applications */
859 #if defined(CONFIG_API)
864 /* Initialize the console (after the relocation and devices init) */
867 #if defined(CONFIG_MISC_INIT_R)
868 /* miscellaneous platform dependent initialisations */
873 if (bd->bi_ethspeed != 0xFFFF)
874 hermes_start_lxt980((int) bd->bi_ethspeed);
877 #if defined(CONFIG_CMD_KGDB)
883 debug("U-Boot relocated to %08lx\n", dest_addr);
890 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
891 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
896 /* Initialize from environment */
897 load_addr = getenv_ulong("loadaddr", 16, load_addr);
901 #if defined(CONFIG_CMD_SCSI)
907 #if defined(CONFIG_CMD_DOC)
913 #ifdef CONFIG_BITBANGMII
916 #if defined(CONFIG_CMD_NET)
922 #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
924 debug("Reset Ethernet PHY\n");
929 post_run(NULL, POST_RAM | post_bootmode_get(0));
932 #if defined(CONFIG_CMD_PCMCIA) \
933 && !defined(CONFIG_CMD_IDE)
939 #if defined(CONFIG_CMD_IDE)
941 #ifdef CONFIG_IDE_8xx_PCCARD
946 #if defined(CONFIG_START_IDE)
947 if (board_start_ide())
954 #ifdef CONFIG_LAST_STAGE_INIT
957 * Some parts can be only initialized if all others (like
958 * Interrupts) are up and running (i.e. the PC-style ISA
964 #if defined(CONFIG_CMD_BEDBUG)
969 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
971 * Export available size of memory for Linux,
972 * taking into account the protected RAM at top of memory
979 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
981 #ifdef CONFIG_LOGBUFFER
982 #ifndef CONFIG_ALT_LB_ADDR
983 /* Also take the logbuffer into account (pram is in kB) */
984 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
987 sprintf(memsz, "%ldk", (ulong) (bd->bi_memsize / 1024) - pram);
988 setenv("mem", memsz);
997 #ifdef CONFIG_MODEM_SUPPORT
999 extern int do_mdm_init;
1001 do_mdm_init = gd->do_mdm_init;
1005 /* Initialization complete - start the monitor */
1007 /* main_loop() can return to retry autoboot, if so just run it again. */
1013 /* NOTREACHED - no way out of command loop except booting */
1016 #if 0 /* We could use plain global data, but the resulting code is bigger */
1018 * Pointer to initial global data area
1020 * Here we initialize it.
1022 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
1023 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
1024 DECLARE_GLOBAL_DATA_PTR =
1025 (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
1028 /************************************************************************/