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/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* 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/at91sama5.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/io.h>
/*
* if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all
* peripheral pins. Good to have if hardware is soldered optionally
* or in case of SPI no slave is selected. Avoid lines to float
* needlessly. Use a short local PUP define.
*
* Due to errata "TXD floats when CTS is inactive" pullups are always
* on for TXD pins.
*/
#ifdef CONFIG_AT91_GPIO_PULLUP
# define PUP CONFIG_AT91_GPIO_PULLUP
#else
# define PUP 0
#endif
#define CIDR 0x40
#define EXID 0x44
unsigned int get_chip_id(void)
{
return readl(ATMEL_BASE_DBGU + CIDR);
}
unsigned int get_extension_chip_id(void)
{
return readl(ATMEL_BASE_DBGU + EXID);
}
unsigned int has_emac()
{
return cpu_is_at91sama5d31() || cpu_is_at91sama5d35();
}
unsigned int has_gmac()
{
return !cpu_is_at91sama5d31();
}
unsigned int has_lcdc()
{
return !cpu_is_at91sama5d35();
}
char *get_cpu_name()
{
unsigned int extension_id = get_extension_chip_id();
if (cpu_is_at91sama5())
switch (extension_id) {
case ARCH_EXID_AT91SAMA5D31:
return CONFIG_SYS_AT91_D31_CPU_NAME;
case ARCH_EXID_AT91SAMA5D33:
return CONFIG_SYS_AT91_D33_CPU_NAME;
case ARCH_EXID_AT91SAMA5D34:
return CONFIG_SYS_AT91_D34_CPU_NAME;
case ARCH_EXID_AT91SAMA5D35:
return CONFIG_SYS_AT91_D35_CPU_NAME;
default:
return CONFIG_SYS_AT91_UNKNOWN_CPU;
}
else
return CONFIG_SYS_AT91_UNKNOWN_CPU;
}
void at91_serial0_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTD, 18, 1); /* TXD0 */
at91_set_a_periph(AT91_PIO_PORTD, 17, PUP); /* RXD0 */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_USART0);
}
void at91_serial1_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTB, 28, 0); /* TXD1 */
at91_set_a_periph(AT91_PIO_PORTB, 29, PUP); /* RXD1 */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_USART1);
}
void at91_serial2_hw_init(void)
{
at91_set_b_periph(AT91_PIO_PORTE, 26, 1); /* TXD2 */
at91_set_b_periph(AT91_PIO_PORTE, 25, PUP); /* RXD2 */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_USART2);
}
void at91_seriald_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTB, 30, 0); /* DRXD */
at91_set_a_periph(AT91_PIO_PORTB, 31, 1); /* DTXD */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_SYS);
}
#if defined(CONFIG_ATMEL_SPI)
void at91_spi0_hw_init(unsigned long cs_mask)
{
at91_set_a_periph(AT91_PIO_PORTD, 10, 0); /* SPI0_MISO */
at91_set_a_periph(AT91_PIO_PORTD, 11, 0); /* SPI0_MOSI */
at91_set_a_periph(AT91_PIO_PORTD, 12, 0); /* SPI0_SPCK */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_SPI0);
if (cs_mask & (1 << 0))
at91_set_a_periph(AT91_PIO_PORTD, 13, 0);
if (cs_mask & (1 << 1))
at91_set_b_periph(AT91_PIO_PORTD, 14, 0);
if (cs_mask & (1 << 2))
at91_set_b_periph(AT91_PIO_PORTD, 15, 0);
if (cs_mask & (1 << 3))
at91_set_b_periph(AT91_PIO_PORTD, 16, 0);
if (cs_mask & (1 << 4))
at91_set_pio_output(AT91_PIO_PORTD, 13, 0);
if (cs_mask & (1 << 5))
at91_set_pio_output(AT91_PIO_PORTD, 14, 0);
if (cs_mask & (1 << 6))
at91_set_pio_output(AT91_PIO_PORTD, 15, 0);
if (cs_mask & (1 << 7))
at91_set_pio_output(AT91_PIO_PORTD, 16, 0);
}
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
void at91_mci_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTD, 0, 1); /* MCI0 CMD */
at91_set_a_periph(AT91_PIO_PORTD, 1, 1); /* MCI0 DA0 */
at91_set_a_periph(AT91_PIO_PORTD, 2, 1); /* MCI0 DA1 */
at91_set_a_periph(AT91_PIO_PORTD, 3, 1); /* MCI0 DA2 */
at91_set_a_periph(AT91_PIO_PORTD, 4, 1); /* MCI0 DA3 */
#ifdef CONFIG_ATMEL_MCI_8BIT
at91_set_a_periph(AT91_PIO_PORTD, 5, 1); /* MCI0 DA4 */
at91_set_a_periph(AT91_PIO_PORTD, 6, 1); /* MCI0 DA5 */
at91_set_a_periph(AT91_PIO_PORTD, 7, 1); /* MCI0 DA6 */
at91_set_a_periph(AT91_PIO_PORTD, 8, 1); /* MCI0 DA7 */
#endif
at91_set_a_periph(AT91_PIO_PORTD, 9, 0); /* MCI0 CLK */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_MCI0);
}
#endif
#ifdef CONFIG_MACB
void at91_macb_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTC, 7, 0); /* ETXCK_EREFCK */
at91_set_a_periph(AT91_PIO_PORTC, 5, 0); /* ERXDV */
at91_set_a_periph(AT91_PIO_PORTC, 2, 0); /* ERX0 */
at91_set_a_periph(AT91_PIO_PORTC, 3, 0); /* ERX1 */
at91_set_a_periph(AT91_PIO_PORTC, 6, 0); /* ERXER */
at91_set_a_periph(AT91_PIO_PORTC, 4, 0); /* ETXEN */
at91_set_a_periph(AT91_PIO_PORTC, 0, 0); /* ETX0 */
at91_set_a_periph(AT91_PIO_PORTC, 1, 0); /* ETX1 */
at91_set_a_periph(AT91_PIO_PORTC, 9, 0); /* EMDIO */
at91_set_a_periph(AT91_PIO_PORTC, 8, 0); /* EMDC */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_EMAC);
}
#endif
#ifdef CONFIG_GMACB
void at91_gmacb_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTB, 0, 0); /* GTX0 */
at91_set_a_periph(AT91_PIO_PORTB, 1, 0); /* GTX1 */
at91_set_a_periph(AT91_PIO_PORTB, 2, 0); /* GTX2 */
at91_set_a_periph(AT91_PIO_PORTB, 3, 0); /* GTX3 */
at91_set_a_periph(AT91_PIO_PORTB, 4, 0); /* GRX0 */
at91_set_a_periph(AT91_PIO_PORTB, 5, 0); /* GRX1 */
at91_set_a_periph(AT91_PIO_PORTB, 6, 0); /* GRX2 */
at91_set_a_periph(AT91_PIO_PORTB, 7, 0); /* GRX3 */
at91_set_a_periph(AT91_PIO_PORTB, 8, 0); /* GTXCK */
at91_set_a_periph(AT91_PIO_PORTB, 9, 0); /* GTXEN */
at91_set_a_periph(AT91_PIO_PORTB, 10, 0); /* GTXER */
at91_set_a_periph(AT91_PIO_PORTB, 11, 0); /* GRXCK */
at91_set_a_periph(AT91_PIO_PORTB, 12, 0); /* GRXDV */
at91_set_a_periph(AT91_PIO_PORTB, 13, 0); /* GRXER */
at91_set_a_periph(AT91_PIO_PORTB, 14, 0); /* GCRS */
at91_set_a_periph(AT91_PIO_PORTB, 15, 0); /* GCOL */
at91_set_a_periph(AT91_PIO_PORTB, 16, 0); /* GMDC */
at91_set_a_periph(AT91_PIO_PORTB, 17, 0); /* GMDIO */
at91_set_a_periph(AT91_PIO_PORTB, 18, 0); /* G125CK */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_GMAC);
}
#endif
#ifdef CONFIG_LCD
void at91_lcd_hw_init(void)
{
at91_set_a_periph(AT91_PIO_PORTA, 24, 0); /* LCDPWM */
at91_set_a_periph(AT91_PIO_PORTA, 25, 0); /* LCDDISP */
at91_set_a_periph(AT91_PIO_PORTA, 26, 0); /* LCDVSYNC */
at91_set_a_periph(AT91_PIO_PORTA, 27, 0); /* LCDHSYNC */
at91_set_a_periph(AT91_PIO_PORTA, 28, 0); /* LCDDOTCK */
at91_set_a_periph(AT91_PIO_PORTA, 29, 0); /* LCDDEN */
at91_set_a_periph(AT91_PIO_PORTA, 0, 0); /* LCDD0 */
at91_set_a_periph(AT91_PIO_PORTA, 1, 0); /* LCDD1 */
at91_set_a_periph(AT91_PIO_PORTA, 2, 0); /* LCDD2 */
at91_set_a_periph(AT91_PIO_PORTA, 3, 0); /* LCDD3 */
at91_set_a_periph(AT91_PIO_PORTA, 4, 0); /* LCDD4 */
at91_set_a_periph(AT91_PIO_PORTA, 5, 0); /* LCDD5 */
at91_set_a_periph(AT91_PIO_PORTA, 6, 0); /* LCDD6 */
at91_set_a_periph(AT91_PIO_PORTA, 7, 0); /* LCDD7 */
at91_set_a_periph(AT91_PIO_PORTA, 8, 0); /* LCDD8 */
at91_set_a_periph(AT91_PIO_PORTA, 9, 0); /* LCDD9 */
at91_set_a_periph(AT91_PIO_PORTA, 10, 0); /* LCDD10 */
at91_set_a_periph(AT91_PIO_PORTA, 11, 0); /* LCDD11 */
at91_set_a_periph(AT91_PIO_PORTA, 12, 0); /* LCDD12 */
at91_set_a_periph(AT91_PIO_PORTA, 13, 0); /* LCDD13 */
at91_set_a_periph(AT91_PIO_PORTA, 14, 0); /* LCDD14 */
at91_set_a_periph(AT91_PIO_PORTA, 15, 0); /* LCDD15 */
at91_set_c_periph(AT91_PIO_PORTC, 14, 0); /* LCDD16 */
at91_set_c_periph(AT91_PIO_PORTC, 13, 0); /* LCDD17 */
at91_set_c_periph(AT91_PIO_PORTC, 12, 0); /* LCDD18 */
at91_set_c_periph(AT91_PIO_PORTC, 11, 0); /* LCDD19 */
at91_set_c_periph(AT91_PIO_PORTC, 10, 0); /* LCDD20 */
at91_set_c_periph(AT91_PIO_PORTC, 15, 0); /* LCDD21 */
at91_set_c_periph(AT91_PIO_PORTE, 27, 0); /* LCDD22 */
at91_set_c_periph(AT91_PIO_PORTE, 28, 0); /* LCDD23 */
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_LCDC);
}
#endif
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