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uboot-mt623x/board/atmel/at91sam9260ek/at91sam9260ek.c

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/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian.pop@leadtechdesign.com>
* Lead Tech Design <www.leadtechdesign.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/at91sam9260.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/io.h>
#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
#include <net.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
/* ------------------------------------------------------------------------- */
/*
* Miscelaneous platform dependent initialisations
*/
static void at91sam9260ek_serial_hw_init(void)
{
#ifdef CONFIG_USART0
at91_set_A_periph(AT91_PIN_PB4, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
#endif
#ifdef CONFIG_USART1
at91_set_A_periph(AT91_PIN_PB6, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
#endif
#ifdef CONFIG_USART2
at91_set_A_periph(AT91_PIN_PB8, 1); /* TXD2 */
at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
#endif
#ifdef CONFIG_USART3 /* DBGU */
at91_set_A_periph(AT91_PIN_PB14, 0); /* DRXD */
at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
#endif
}
#ifdef CONFIG_CMD_NAND
static void at91sam9260ek_nand_hw_init(void)
{
unsigned long csa;
/* Enable CS3 */
csa = at91_sys_read(AT91_MATRIX_EBICSA);
at91_sys_write(AT91_MATRIX_EBICSA,
csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
/* Configure SMC CS3 for NAND/SmartMedia */
at91_sys_write(AT91_SMC_SETUP(3),
AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
at91_sys_write(AT91_SMC_PULSE(3),
AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
at91_sys_write(AT91_SMC_CYCLE(3),
AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
at91_sys_write(AT91_SMC_MODE(3),
AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
AT91_SMC_EXNWMODE_DISABLE |
#ifdef CFG_NAND_DBW_16
AT91_SMC_DBW_16 |
#else /* CFG_NAND_DBW_8 */
AT91_SMC_DBW_8 |
#endif
AT91_SMC_TDF_(2));
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
/* Configure RDY/BSY */
at91_set_gpio_input(AT91_PIN_PC13, 1);
/* Enable NandFlash */
at91_set_gpio_output(AT91_PIN_PC14, 1);
}
#endif
#ifdef CONFIG_HAS_DATAFLASH
static void at91sam9260ek_spi_hw_init(void)
{
at91_set_A_periph(AT91_PIN_PA3, 0); /* SPI0_NPCS0 */
at91_set_B_periph(AT91_PIN_PC11, 0); /* SPI0_NPCS1 */
at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
/* Enable clock */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_SPI0);
}
#endif
#ifdef CONFIG_MACB
static void at91sam9260ek_macb_hw_init(void)
{
/* Enable clock */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
/*
* Disable pull-up on:
* RXDV (PA17) => PHY normal mode (not Test mode)
* ERX0 (PA14) => PHY ADDR0
* ERX1 (PA15) => PHY ADDR1
* ERX2 (PA25) => PHY ADDR2
* ERX3 (PA26) => PHY ADDR3
* ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA17) |
pin_to_mask(AT91_PIN_PA25) |
pin_to_mask(AT91_PIN_PA26) |
pin_to_mask(AT91_PIN_PA28),
pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
/* Need to reset PHY -> 500ms reset */
at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
AT91_RSTC_ERSTL | (0x0D << 8) |
AT91_RSTC_URSTEN);
at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
/* Wait for end hardware reset */
while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
/* Restore NRST value */
at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
AT91_RSTC_ERSTL | (0x0 << 8) |
AT91_RSTC_URSTEN);
/* Re-enable pull-up */
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA17) |
pin_to_mask(AT91_PIN_PA25) |
pin_to_mask(AT91_PIN_PA26) |
pin_to_mask(AT91_PIN_PA28),
pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
at91_set_A_periph(AT91_PIN_PA19, 0); /* ETXCK_EREFCK */
at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
#ifndef CONFIG_RMII
at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
#endif
}
#endif
int board_init(void)
{
/* Enable Ctrlc */
console_init_f();
/* arch number of AT91SAM9260EK-Board */
gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
/* adress of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
at91sam9260ek_serial_hw_init();
#ifdef CONFIG_CMD_NAND
at91sam9260ek_nand_hw_init();
#endif
#ifdef CONFIG_HAS_DATAFLASH
at91sam9260ek_spi_hw_init();
#endif
#ifdef CONFIG_MACB
at91sam9260ek_macb_hw_init();
#endif
return 0;
}
int dram_init(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM;
gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
return 0;
}
#ifdef CONFIG_RESET_PHY_R
void reset_phy(void)
{
#ifdef CONFIG_MACB
/*
* Initialize ethernet HW addr prior to starting Linux,
* needed for nfsroot
*/
eth_init(gd->bd);
#endif
}
#endif
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