Exemplo n.º 1
0
/* Initialization code to bring the device up to a known good state */
static void denali_hw_init(struct denali_nand_info *denali)
{
	/*
	 * The REVISION register may not be reliable.  Platforms are allowed to
	 * override it.
	 */
	if (!denali->revision)
		denali->revision = swab16(ioread32(denali->flash_reg + REVISION));

	/*
	 * tell driver how many bit controller will skip before writing
	 * ECC code in OOB. This is normally used for bad block marker
	 */
	writel(CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES,
	       denali->flash_reg + SPARE_AREA_SKIP_BYTES);
	detect_max_banks(denali);
	denali_nand_reset(denali);
	writel(0x0F, denali->flash_reg + RB_PIN_ENABLED);
	writel(CHIP_EN_DONT_CARE__FLAG,
	       denali->flash_reg + CHIP_ENABLE_DONT_CARE);
	writel(0xffff, denali->flash_reg + SPARE_AREA_MARKER);

	/* Should set value for these registers when init */
	writel(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES);
	writel(1, denali->flash_reg + ECC_ENABLE);
	denali_nand_timing_set(denali);
	denali_irq_init(denali);
}
Exemplo n.º 2
0
static void denali_hw_init(struct denali_nand_info *denali)
{
	denali->bbtskipbytes = ioread32(denali->flash_reg +
						SPARE_AREA_SKIP_BYTES);
	detect_max_banks(denali);
	denali_nand_reset(denali);
	iowrite32(0x0F, denali->flash_reg + RB_PIN_ENABLED);
	iowrite32(CHIP_EN_DONT_CARE__FLAG,
			denali->flash_reg + CHIP_ENABLE_DONT_CARE);

	iowrite32(0xffff, denali->flash_reg + SPARE_AREA_MARKER);

	
	iowrite32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES);
	iowrite32(1, denali->flash_reg + ECC_ENABLE);
	denali_nand_timing_set(denali);
	denali_irq_init(denali);
}
Exemplo n.º 3
0
/* Initialization code to bring the device up to a known good state */
static void denali_hw_init(struct denali_nand_info *denali)
{
	/* tell driver how many bit controller will skip before
	 * writing ECC code in OOB, this register may be already
	 * set by firmware. So we read this value out.
	 * if this value is 0, just let it be.
	 * */
	denali->bbtskipbytes = ioread32(denali->flash_reg +
						SPARE_AREA_SKIP_BYTES);
	detect_max_banks(denali);
	denali_nand_reset(denali);
	iowrite32(0x0F, denali->flash_reg + RB_PIN_ENABLED);
	iowrite32(CHIP_EN_DONT_CARE__FLAG,
			denali->flash_reg + CHIP_ENABLE_DONT_CARE);

	iowrite32(0xffff, denali->flash_reg + SPARE_AREA_MARKER);

	/* Should set value for these registers when init */
	iowrite32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES);
	iowrite32(1, denali->flash_reg + ECC_ENABLE);
	denali_nand_timing_set(denali);
	denali_irq_init(denali);
}