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/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian.pop@leadtechdesign.com>
* Lead Tech Design <www.leadtechdesign.com>
*
* (C) Copyright 2010
* Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
*
* 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 <net.h>
#include <netdev.h>
#include <mmc.h>
#include <i2c.h>
#include <spi.h>
#include <asm/arch/at91sam9260.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/at91_shdwn.h>
#include <asm/arch/gpio.h>
#include <asm/arch/io.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_CMD_NAND
static void 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_(1) | AT91_SMC_NCS_WRSETUP_(0) |
AT91_SMC_NRDSETUP_(1) | 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 |
AT91_SMC_DBW_8 |
AT91_SMC_TDF_(2));
/* Configure RDY/BSY */
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
#endif
#ifdef CONFIG_MACB
static void macb_hw_init(void)
{
/* Enable EMAC clock */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
/* Initialize EMAC=MACB hardware */
at91_macb_hw_init();
}
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
/* this is a weak define that we are overriding */
int board_mmc_init(bd_t *bd)
{
/* Enable MCI clock */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_MCI);
/* Initialize MCI hardware */
at91_mci_hw_init();
/* This calls the atmel_mmc_init in gen_atmel_mci.c */
return atmel_mci_init((void *)AT91_BASE_MCI);
}
/* this is a weak define that we are overriding */
int board_mmc_getcd(u8 *cd, struct mmc *mmc)
{
/*
* the only currently existing use of this function
* (fsl_esdhc.c) suggests this function must return
* *cs = TRUE if a card is NOT detected -> in most
* cases the value of the pin when the detect switch
* closes to GND
*/
*cd = at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN) ? 1 : 0;
return 0;
}
#endif
int board_early_init_f(void)
{
struct at91_shdwn *shdwn = (struct at91_shdwn *)AT91_SHDWN_BASE;
/*
* make sure the board can be powered on by
* any transition on WKUP
*/
writel(AT91_SHDW_MR_WKMODE0H2L | AT91_SHDW_MR_WKMODE0L2H,
&shdwn->mr);
/* Enable clocks for all PIOs */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOA);
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOB);
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
/* set SCL0 and SDA0 to open drain */
at91_set_pio_output(I2C0_PORT, SCL0_PIN, 1);
at91_set_pio_multi_drive(I2C0_PORT, SCL0_PIN, 1);
at91_set_pio_pullup(I2C0_PORT, SCL0_PIN, 1);
at91_set_pio_output(I2C0_PORT, SDA0_PIN, 1);
at91_set_pio_multi_drive(I2C0_PORT, SDA0_PIN, 1);
at91_set_pio_pullup(I2C0_PORT, SDA0_PIN, 1);
/* set SCL1 and SDA1 to open drain */
at91_set_pio_output(I2C1_PORT, SCL1_PIN, 1);
at91_set_pio_multi_drive(I2C1_PORT, SCL1_PIN, 1);
at91_set_pio_pullup(I2C1_PORT, SCL1_PIN, 1);
at91_set_pio_output(I2C1_PORT, SDA1_PIN, 1);
at91_set_pio_multi_drive(I2C1_PORT, SDA1_PIN, 1);
at91_set_pio_pullup(I2C1_PORT, SDA1_PIN, 1);
return 0;
}
int board_init(void)
{
/* arch number of TOP9000 Board */
gd->bd->bi_arch_number = MACH_TYPE_TOP9000;
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
at91_serial_hw_init();
#ifdef CONFIG_CMD_NAND
nand_hw_init();
#endif
#ifdef CONFIG_MACB
macb_hw_init();
#endif
#ifdef CONFIG_ATMEL_SPI0
/* (n+4) denotes to use nSPISEL(0) in GPIO mode! */
at91_spi0_hw_init(1 << (FRAM_CS_NUM + 4));
#endif
#ifdef CONFIG_ATMEL_SPI1
at91_spi1_hw_init(1 << (ENC_CS_NUM + 4));
#endif
return 0;
}
#ifdef CONFIG_MISC_INIT_R
int misc_init_r(void)
{
/* read 'factory' part of EEPROM */
read_factory_r();
return 0;
}
#endif
int dram_init(void)
{
gd->ram_size = get_ram_size(
(void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
#ifdef CONFIG_RESET_PHY_R
void reset_phy(void)
{
/*
* Initialize ethernet HW addresses prior to starting Linux,
* needed for nfsroot.
* TODO: We need to investigate if that is really necessary.
*/
eth_init(gd->bd);
}
#endif
int board_eth_init(bd_t *bis)
{
int rc = 0;
int num = 0;
#ifdef CONFIG_MACB
rc = macb_eth_initialize(0,
(void *)AT91_EMAC_BASE,
CONFIG_SYS_PHY_ID);
if (!rc)
num++;
#endif
#ifdef CONFIG_ENC28J60
rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM,
ENC_SPI_CLOCK, SPI_MODE_0);
if (!rc)
num++;
# ifdef CONFIG_ENC28J60_2
rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+1,
ENC_SPI_CLOCK, SPI_MODE_0);
if (!rc)
num++;
# ifdef CONFIG_ENC28J60_3
rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+2,
ENC_SPI_CLOCK, SPI_MODE_0);
if (!rc)
num++;
# endif
# endif
#endif
return num;
}
/*
* I2C access functions
*
* Note:
* We need to access Bus 0 before relocation to access the
* environment settings.
* However i2c_get_bus_num() cannot be called before
* relocation.
*/
#ifdef CONFIG_SOFT_I2C
void iic_init(void)
{
/* ports are now initialized in board_early_init_f() */
}
int iic_read(void)
{
switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
case 0:
return at91_get_pio_value(I2C0_PORT, SDA0_PIN);
case 1:
return at91_get_pio_value(I2C1_PORT, SDA1_PIN);
}
return 1;
}
void iic_sda(int bit)
{
switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
case 0:
at91_set_pio_value(I2C0_PORT, SDA0_PIN, bit);
break;
case 1:
at91_set_pio_value(I2C1_PORT, SDA1_PIN, bit);
break;
}
}
void iic_scl(int bit)
{
switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
case 0:
at91_set_pio_value(I2C0_PORT, SCL0_PIN, bit);
break;
case 1:
at91_set_pio_value(I2C1_PORT, SCL1_PIN, bit);
break;
}
}
#endif
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