diff options
Diffstat (limited to 'sys/arm/at91/board_sam9g20ek.c')
-rw-r--r-- | sys/arm/at91/board_sam9g20ek.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sys/arm/at91/board_sam9g20ek.c b/sys/arm/at91/board_sam9g20ek.c new file mode 100644 index 0000000..7971e5a --- /dev/null +++ b/sys/arm/at91/board_sam9g20ek.c @@ -0,0 +1,176 @@ +/*- + * Copyright (c) 2009 Greg Ansley. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Atmel AT91SAM9G20EK Rev. B Development Card */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#include <sys/param.h> +#include <sys/systm.h> + +#include <arm/at91/at91board.h> +#include <arm/at91/at91reg.h> +#include <arm/at91/at91var.h> +#include <arm/at91/at91sam9g20reg.h> +#include <arm/at91/at91_piovar.h> +#include <arm/at91/at91_pio_sam9g20.h> +//#include <arm/at91/at91_led.h> + +#define AT91SAM9G20_LED_BASE AT91SAM9G20_PIOA_BASE +#define AT91SAM9G20_LED_SIZE AT91SAM9G20_PIO_SIZE +#define AT91SAM9G20_IRQ_LED AT91SAM9G20_IRQ_PIOA + +long +board_init(void) +{ + + //at91_led_create("power", 0, 9, 0); + + /* PIOB's A periph: Turn USART 0's TX/RX pins */ + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB14_DRXD, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB15_DTXD, 1); + + /* PIOB's A periph: Turn USART 0's TX/RX pins */ + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB4_TXD0, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB5_RXD0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB22_DSR0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB23_DCD0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB24_DTR0, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB25_RI0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB26_RTS0, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB27_CTS0, 0); + + /* PIOB's A periph: Turn USART 1's TX/RX pins */ + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB6_TXD1, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB7_RXD1, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB28_RTS1, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB29_CTS1, 0); + +#if 1 + /* TWI Two-wire Serial Data */ + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA23_TWD, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA24_TWCK, 1); +#endif +#if 1 + /* + * Turn off Clock to DataFlash, conflicts with MCI clock. + * Remove resistor R42 if you need both DataFlash and SD Card + * access at the same time + */ + at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA2); + at91_pio_gpio_input(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA2); + + /* Turn off chip select to DataFlash */ + at91_pio_gpio_output(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11, 0); + at91_pio_gpio_set(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11); + at91_pio_use_gpio(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11); + + /* Multimedia Card */ + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA0_MCDB0, 1); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA1_MCCDB, 1); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA3_MCDB3, 1); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA4_MCDB2, 1); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA5_MCDB1, 1); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA8_MCCK, 1); + at91_pio_use_gpio(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC9); +#else + /* SPI0 to DataFlash */ + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA1, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA2, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC11,0); + + at91_pio_gpio_input(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA8); + at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA8); +#endif + +#if 0 + static int at91_base = AT91SAM9G20_BASE; + volatile uint32_t *PIO = (uint32_t *)(at91_base + AT91SAM9G20_PIOA_BASE); + volatile uint32_t *RST = (uint32_t *)(at91_base + AT91SAM9G20_RSTC_BASE); + /* + * Disable pull-up on: + * ERX0 (PA14) => PHY ADDR0 + * ERX1 (PA15) => PHY ADDR1 + * RXDV (PA17) => PHY normal mode (not Test mode) + * ERX2 (PA25) => PHY ADDR2 + * ERX3 (PA26) => PHY ADDR3 + * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0 + * + * PHY has internal pull-down + */ + PIO[PIO_PUDR/4] = + AT91C_PA14_ERX0 | + AT91C_PA15_ERX1 | + AT91C_PA17_ERXDV | + AT91C_PA25_ERX2 | + AT91C_PA26_ERX3 | + AT91C_PA28_ECRS; + + + /* Reset PHY - 500ms */ + RST[2] = 0xA5000D01; + RST[0] = 0xA5000080; + while (!(RST[1] & (1 << 16))) ; + + PIO[PIO_PUER/4] = + AT91C_PA14_ERX0 | + AT91C_PA15_ERX1 | + AT91C_PA17_ERXDV | + AT91C_PA25_ERX2 | + AT91C_PA26_ERX3 | + AT91C_PA28_ECRS; +#endif + + + /* EMAC */ + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA12_ETX0 , 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA13_ETX1, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA14_ERX0, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA15_ERX1, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA16_ETXEN, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA17_ERXDV, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA18_ERXER, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA19_ETXCK, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA20_EMDC, 0); + at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA21_EMDIO, 0); + + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA10_ETX2_0, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA11_ETX3_0, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA25_ERX2, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA26_ERX3, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA27_ERXCK, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA28_ECRS, 0); + at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA29_ECOL, 0); + +#if 0 + /* Handle Missing ETXER line */ + at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER); + at91_pio_gpio_output(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER, 0); + at91_pio_gpio_clear(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER); +#endif + return (at91_ramsize()); +} |