Пример #1
0
/*------------------------------------------------------------------------------*/
void sdramc_hw_init(void)
{
    /*
     * Configure PIOs 
     */
/*	const struct pio_desc sdramc_pio[] = {
		{"D16", AT91C_PIN_PC(16), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D17", AT91C_PIN_PC(17), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D18", AT91C_PIN_PC(18), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D19", AT91C_PIN_PC(19), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D20", AT91C_PIN_PC(20), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D21", AT91C_PIN_PC(21), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D22", AT91C_PIN_PC(22), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D23", AT91C_PIN_PC(23), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D24", AT91C_PIN_PC(24), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D25", AT91C_PIN_PC(25), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D26", AT91C_PIN_PC(26), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D27", AT91C_PIN_PC(27), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D28", AT91C_PIN_PC(28), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D29", AT91C_PIN_PC(29), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D30", AT91C_PIN_PC(30), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"D31", AT91C_PIN_PC(31), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{(char *) 0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
	};
*/
    /*
     * Configure the SDRAMC PIO controller to output PCK0 
     */
/*	pio_setup(sdramc_pio); */

    writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_ASR(0));
    writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_PDR(0));

}
Пример #2
0
static void sdramc_init(void)
{
	struct sdramc_register sdramc_config;

	sdramc_config.cr = AT91C_SDRAMC_NC_9
		| AT91C_SDRAMC_NR_13 | AT91C_SDRAMC_CAS_2
		| AT91C_SDRAMC_NB_4_BANKS | AT91C_SDRAMC_DBW_32_BITS
		| AT91C_SDRAMC_TWR_2 | AT91C_SDRAMC_TRC_7
		| AT91C_SDRAMC_TRP_2 | AT91C_SDRAMC_TRCD_2
		| AT91C_SDRAMC_TRAS_5 | AT91C_SDRAMC_TXSR_8;

	sdramc_config.tr = (MASTER_CLOCK * 7) / 1000000;
	sdramc_config.mdr = AT91C_SDRAMC_MD_SDRAM;

	/* configure sdramc pins */
	writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_ASR(0));
	writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_PDR(0));

	writel((1 << AT91C_ID_PIOC), (PMC_PCER + AT91C_BASE_PMC));

	/* Initialize the matrix (memory voltage = 3.3) */
	writel(readl(AT91C_BASE_CCFG + CCFG_EBICSA) | AT91C_EBI_CS1A_SDRAMC,
			AT91C_BASE_CCFG + CCFG_EBICSA);

	sdramc_initialize(&sdramc_config, AT91C_BASE_CS1);
}
Пример #3
0
void at91_spi0_hw_init(void)
{
	/* Configure the spi0 pins */
	/* {"MISO",	AT91C_PIN_PA(0),	0, PIO_DEFAULT, PIO_PERIPH_A}
	   {"MOSI",	AT91C_PIN_PA(1),	0, PIO_DEFAULT, PIO_PERIPH_A}
	   {"SPCK",	AT91C_PIN_PA(2),	0, PIO_DEFAULT, PIO_PERIPH_A}*/
	writel(((0x01 << 0) | (0x01 << 1) | (0x01 << 2)), AT91C_BASE_PIOA + PIO_ASR(0));
	writel(((0x01 << 0) | (0x01 << 1) | (0x01 << 2)), AT91C_BASE_PIOA + PIO_PDR(0));

#if (AT91C_SPI_PCS_DATAFLASH == AT91C_SPI_PCS0_DATAFLASH)
	/* {"NPCS",        AT91C_PIN_PA(3),     1, PIO_PULLUP, PIO_OUTPUT}, */
	writel((0x01 << 3), AT91C_BASE_PIOA + PIO_IDR(0));
	writel((0x01 << 3), AT91C_BASE_PIOA + PIO_PPUDR(0));
	writel((0x01 << 3), AT91C_BASE_PIOA + PIO_SODR(0));
	writel((0x01 << 3), AT91C_BASE_PIOA + PIO_OER(0));
	writel((0x01 << 3), AT91C_BASE_PIOA + PIO_PER(0));

	writel((1 << AT91C_ID_PIOA), (PMC_PCER + AT91C_BASE_PMC));
#endif

#if (AT91C_SPI_PCS_DATAFLASH == AT91C_SPI_PCS1_DATAFLASH)
	/* {"NPCS",        AT91C_PIN_PC(11),     1, PIO_PULLUP, PIO_OUTPUT}, */
	writel((0x01 << 11), AT91C_BASE_PIOC + PIO_IDR(0));
	writel((0x01 << 11), AT91C_BASE_PIOC + PIO_PPUDR(0));
	writel((0x01 << 11), AT91C_BASE_PIOC + PIO_SODR(0));
	writel((0x01 << 11), AT91C_BASE_PIOC + PIO_OER(0));
	writel((0x01 << 11), AT91C_BASE_PIOC + PIO_PER(0));

	writel(((1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOC)), (PMC_PCER + AT91C_BASE_PMC));
#endif

	/* Enable the spi0 clock */
	writel((1 << AT91C_ID_SPI0), (PMC_PCER + AT91C_BASE_PMC));
}
Пример #4
0
static void initialize_dbgu(void)
{
	/* Configure DBGU pin */
	/* {"RXD", AT91C_PIN_PB(14), 0, PIO_DEFAULT, PIO_PERIPH_A}, */
	/* {"TXD", AT91C_PIN_PB(15), 0, PIO_DEFAULT, PIO_PERIPH_A}, */
	writel(((0x01 << 14) | (0x01 << 15)), AT91C_BASE_PIOB + PIO_ASR(0));
	writel(((0x01 << 14) | (0x01 << 15)), AT91C_BASE_PIOB + PIO_PDR(0));

	writel((1 << AT91C_ID_PIOB), (PMC_PCER + AT91C_BASE_PMC));

	dbgu_init(BAUDRATE(MASTER_CLOCK, 115200));
}
Пример #5
0
static void initialize_dbgu(void)
{
	/* const struct pio_desc dbgu_pins[] = {
		{"RXD", AT91C_PIN_PA(9), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{"TXD", AT91C_PIN_PA(10), 0, PIO_DEFAULT, PIO_PERIPH_A},
		{(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
	}; */
	/* Configure the dbgu pins */
	writel(((0x01 << 9) | (0x01 << 10)), AT91C_BASE_PIOA + PIO_ASR(0));
	writel(((0x01 << 9) | (0x01 << 10)), AT91C_BASE_PIOA + PIO_PDR(0));

	writel((1 << AT91C_ID_PIOA), (PMC_PCER + AT91C_BASE_PMC));

	dbgu_init(BAUDRATE(MASTER_CLOCK, 115200));
}
Пример #6
0
static void sdramc_init(void)
{
	struct sdramc_register sdramc_config;
	unsigned int reg;

#if defined(CONFIG_CPU_CLK_200MHZ)
	sdramc_config.cr = AT91C_SDRAMC_NC_9
			| AT91C_SDRAMC_NR_13 | AT91C_SDRAMC_CAS_2
			| AT91C_SDRAMC_NB_4_BANKS | AT91C_SDRAMC_DBW_32_BITS
			| AT91C_SDRAMC_TWR_2 | AT91C_SDRAMC_TRC_7
			| AT91C_SDRAMC_TRP_2 | AT91C_SDRAMC_TRCD_2
			| AT91C_SDRAMC_TRAS_5 | AT91C_SDRAMC_TXSR_8;

#endif

#if defined(CONFIG_CPU_CLK_266MHZ)
	sdramc_config.cr = AT91C_SDRAMC_NC_9
			| AT91C_SDRAMC_NR_13 | AT91C_SDRAMC_CAS_3
			| AT91C_SDRAMC_NB_4_BANKS | AT91C_SDRAMC_DBW_32_BITS
			| AT91C_SDRAMC_TWR_2 | AT91C_SDRAMC_TRC_9
			| AT91C_SDRAMC_TRP_3 | AT91C_SDRAMC_TRCD_3
			| AT91C_SDRAMC_TRAS_6 | AT91C_SDRAMC_TXSR_10;

#endif
	sdramc_config.tr = (MASTER_CLOCK * 7) / 1000000;
	sdramc_config.mdr = AT91C_SDRAMC_MD_SDRAM;

	/* configure sdramc pins */
	writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_ASR(0));
	writel(0xFFFF0000, AT91C_BASE_PIOC + PIO_PDR(0));

	writel((1 << AT91C_ID_PIOC), (PMC_PCER + AT91C_BASE_PMC));

	/* Initialize the matrix (memory voltage = 3.3) */
	reg = readl(AT91C_BASE_CCFG + CCFG_EBICSA);
	reg |= AT91C_EBI_CS1A_SDRAMC;
	writel(reg, AT91C_BASE_CCFG + CCFG_EBICSA);

	sdramc_initialize(&sdramc_config, AT91C_BASE_CS1);
}