예제 #1
0
static int initr_unlock_ram_in_cache(void)
{
	unlock_ram_in_cache();	/* it's time to unlock D-cache in e500 */
	return 0;
}
예제 #2
0
파일: board.c 프로젝트: KunYi/uboot-samx6i
/*
 * This is the next part if the initialization sequence: we are now
 * running from RAM and have a "normal" C environment, i. e. global
 * data can be written, BSS has been cleared, the stack size in not
 * that critical any more, etc.
 */
void board_init_r(gd_t *id, ulong dest_addr)
{
	bd_t *bd;
	ulong malloc_start;

#ifndef CONFIG_SYS_NO_FLASH
	ulong flash_size;
#endif

	gd = id;		/* initialize RAM version of global data */
	bd = gd->bd;

	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */

	/* The Malloc area is immediately below the monitor copy in DRAM */
	malloc_start = dest_addr - TOTAL_MALLOC_LEN;

#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
	/*
	 * The gd->arch.cpu pointer is set to an address in flash before
	 * relocation.  We need to update it to point to the same CPU entry
	 * in RAM.
	 */
	gd->arch.cpu += dest_addr - CONFIG_SYS_MONITOR_BASE;

	/*
	 * If we didn't know the cpu mask & # cores, we can save them of
	 * now rather than 'computing' them constantly
	 */
	fixup_cpu();
#endif

#ifdef CONFIG_SYS_EXTRA_ENV_RELOC
	/*
	 * Some systems need to relocate the env_addr pointer early because the
	 * location it points to will get invalidated before env_relocate is
	 * called.  One example is on systems that might use a L2 or L3 cache
	 * in SRAM mode and initialize that cache from SRAM mode back to being
	 * a cache in cpu_init_r.
	 */
	gd->env_addr += dest_addr - CONFIG_SYS_MONITOR_BASE;
#endif

	serial_initialize();

	debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

	WATCHDOG_RESET();

	/*
	 * Setup trap handlers
	 */
	trap_init(dest_addr);

#ifdef CONFIG_ADDR_MAP
	init_addr_map();
#endif

#if defined(CONFIG_BOARD_EARLY_INIT_R)
	board_early_init_r();
#endif

	monitor_flash_len = (ulong)&__init_end - dest_addr;

	WATCHDOG_RESET();

#ifdef CONFIG_LOGBUFFER
	logbuff_init_ptrs();
#endif
#ifdef CONFIG_POST
	post_output_backlog();
#endif

	WATCHDOG_RESET();

#if defined(CONFIG_SYS_DELAYED_ICACHE)
	icache_enable();	/* it's time to enable the instruction cache */
#endif

#if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
	unlock_ram_in_cache();	/* it's time to unlock D-cache in e500 */
#endif

#if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
	/*
	 * Do early PCI configuration _before_ the flash gets initialised,
	 * because PCU ressources are crucial for flash access on some boards.
	 */
	pci_init();
#endif
#if defined(CONFIG_WINBOND_83C553)
	/*
	 * Initialise the ISA bridge
	 */
	initialise_w83c553f();
#endif

	asm("sync ; isync");

	mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);

#if !defined(CONFIG_SYS_NO_FLASH)
	puts("Flash: ");

	if (board_flash_wp_on()) {
		printf("Uninitialized - Write Protect On\n");
		/* Since WP is on, we can't find real size.  Set to 0 */
		flash_size = 0;
	} else if ((flash_size = flash_init()) > 0) {
#ifdef CONFIG_SYS_FLASH_CHECKSUM
		print_size(flash_size, "");
		/*
		 * Compute and print flash CRC if flashchecksum is set to 'y'
		 *
		 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
		 */
		if (getenv_yesno("flashchecksum") == 1) {
			printf("  CRC: %08X",
			       crc32(0,
				     (const unsigned char *)
				     CONFIG_SYS_FLASH_BASE, flash_size)
				);
		}
		putc('\n');
#else  /* !CONFIG_SYS_FLASH_CHECKSUM */
		print_size(flash_size, "\n");
#endif /* CONFIG_SYS_FLASH_CHECKSUM */
	} else {
		puts(failed);
		hang();
	}

	/* update start of FLASH memory    */
	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
	/* size of FLASH memory (final value) */
	bd->bi_flashsize = flash_size;

#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
	/* Make a update of the Memctrl. */
	update_flash_size(flash_size);
#endif


#if defined(CONFIG_OXC) || defined(CONFIG_RMU)
	/* flash mapped at end of memory map */
	bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
#elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
	bd->bi_flashoffset = monitor_flash_len;	/* reserved area for monitor */
#endif
#endif /* !CONFIG_SYS_NO_FLASH */

	WATCHDOG_RESET();

	/* initialize higher level parts of CPU like time base and timers */
	cpu_init_r();

	WATCHDOG_RESET();

#ifdef CONFIG_SPI
#if !defined(CONFIG_ENV_IS_IN_EEPROM)
	spi_init_f();
#endif
	spi_init_r();
#endif

#if defined(CONFIG_CMD_NAND)
	WATCHDOG_RESET();
	puts("NAND:  ");
	nand_init();		/* go init the NAND */
#endif

#ifdef CONFIG_GENERIC_MMC
/*
 * MMC initialization is called before relocating env.
 * Thus It is required that operations like pin multiplexer
 * be put in board_init.
 */
	WATCHDOG_RESET();
	puts("MMC:  ");
	mmc_initialize(bd);
#endif

	/* relocate environment function pointers etc. */
	env_relocate();

	/*
	 * after non-volatile devices & environment is setup and cpu code have
	 * another round to deal with any initialization that might require
	 * full access to the environment or loading of some image (firmware)
	 * from a non-volatile device
	 */
	cpu_secondary_init_r();

	/*
	 * Fill in missing fields of bd_info.
	 * We do this here, where we have "normal" access to the
	 * environment; we used to do this still running from ROM,
	 * where had to use getenv_f(), which can be pretty slow when
	 * the environment is in EEPROM.
	 */

#if defined(CONFIG_SYS_EXTBDINFO)
#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
#if defined(CONFIG_I2CFAST)
	/*
	 * set bi_iic_fast for linux taking environment variable
	 * "i2cfast" into account
	 */
	{
		if (getenv_yesno("i2cfast") == 1) {
			bd->bi_iic_fast[0] = 1;
			bd->bi_iic_fast[1] = 1;
		}
	}
#endif /* CONFIG_I2CFAST */
#endif /* CONFIG_405GP, CONFIG_405EP */
#endif /* CONFIG_SYS_EXTBDINFO */

#if defined(CONFIG_SC3)
	sc3_read_eeprom();
#endif

#if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
	mac_read_from_eeprom();
#endif

#ifdef CONFIG_CMD_NET
	/* kept around for legacy kernels only ... ignore the next section */
	eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
#ifdef CONFIG_HAS_ETH1
	eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
#endif
#ifdef CONFIG_HAS_ETH2
	eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
#endif
#ifdef CONFIG_HAS_ETH3
	eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
#endif
#ifdef CONFIG_HAS_ETH4
	eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
#endif
#ifdef CONFIG_HAS_ETH5
	eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
#endif
#endif /* CONFIG_CMD_NET */

	WATCHDOG_RESET();

#if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
	/*
	 * Do pci configuration
	 */
	pci_init();
#endif

/** leave this here (after malloc(), environment and PCI are working) **/
	/* Initialize stdio devices */
	stdio_init();

	/* Initialize the jump table for applications */
	jumptable_init();

#if defined(CONFIG_API)
	/* Initialize API */
	api_init();
#endif

	/* Initialize the console (after the relocation and devices init) */
	console_init_r();

#if defined(CONFIG_MISC_INIT_R)
	/* miscellaneous platform dependent initialisations */
	misc_init_r();
#endif

#if defined(CONFIG_CMD_KGDB)
	WATCHDOG_RESET();
	puts("KGDB:  ");
	kgdb_init();
#endif

	debug("U-Boot relocated to %08lx\n", dest_addr);

	/*
	 * Enable Interrupts
	 */
	interrupt_init();

#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
	status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
#endif

	udelay(20);

	/* Initialize from environment */
	load_addr = getenv_ulong("loadaddr", 16, load_addr);

	WATCHDOG_RESET();

#if defined(CONFIG_CMD_SCSI)
	WATCHDOG_RESET();
	puts("SCSI:  ");
	scsi_init();
#endif

#if defined(CONFIG_CMD_DOC)
	WATCHDOG_RESET();
	puts("DOC:   ");
	doc_init();
#endif

#ifdef CONFIG_BITBANGMII
	bb_miiphy_init();
#endif
#if defined(CONFIG_CMD_NET)
	WATCHDOG_RESET();
	puts("Net:   ");
	eth_initialize(bd);
#endif

#if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
	WATCHDOG_RESET();
	debug("Reset Ethernet PHY\n");
	reset_phy();
#endif

#ifdef CONFIG_POST
	post_run(NULL, POST_RAM | post_bootmode_get(0));
#endif

#if defined(CONFIG_CMD_PCMCIA) \
    && !defined(CONFIG_CMD_IDE)
	WATCHDOG_RESET();
	puts("PCMCIA:");
	pcmcia_init();
#endif

#if defined(CONFIG_CMD_IDE)
	WATCHDOG_RESET();
#ifdef	CONFIG_IDE_8xx_PCCARD
	puts("PCMCIA:");
#else
	puts("IDE:   ");
#endif
#if defined(CONFIG_START_IDE)
	if (board_start_ide())
		ide_init();
#else
	ide_init();
#endif
#endif

#ifdef CONFIG_LAST_STAGE_INIT
	WATCHDOG_RESET();
	/*
	 * Some parts can be only initialized if all others (like
	 * Interrupts) are up and running (i.e. the PC-style ISA
	 * keyboard).
	 */
	last_stage_init();
#endif

#if defined(CONFIG_CMD_BEDBUG)
	WATCHDOG_RESET();
	bedbug_init();
#endif

#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
	/*
	 * Export available size of memory for Linux,
	 * taking into account the protected RAM at top of memory
	 */
	{
		ulong pram = 0;
		char memsz[32];

#ifdef CONFIG_PRAM
		pram = getenv_ulong("pram", 10, CONFIG_PRAM);
#endif
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
		/* Also take the logbuffer into account (pram is in kB) */
		pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
#endif
#endif
		sprintf(memsz, "%ldk", (ulong) (bd->bi_memsize / 1024) - pram);
		setenv("mem", memsz);
	}
#endif

#ifdef CONFIG_PS2KBD
	puts("PS/2:  ");
	kbd_init();
#endif

	/* Initialization complete - start the monitor */

	/* main_loop() can return to retry autoboot, if so just run it again. */
	for (;;) {
		WATCHDOG_RESET();
		main_loop();
	}

	/* NOTREACHED - no way out of command loop except booting */
}