2edabad8a4
* Support for sam9 "EMAC" controller.
* Support for rmii interface to phy.
at91.c & at91sam9.c:
* Eliminate separate at91sam9.c file.
* Add new devices to at91sam9_devs table.
at91_machdep.c & at at91sam9_machdep.c:
* Automatic chip type determination.
* Remove compile time chip dependencies.
* Eliminate separate at91sam9_machdep.c file.
at91_pmc.c:
* Corrected support for all of the sam926? and sam9g20 chips.
* Remove compile time chip dependencies.
My apologies to Greg for taking so long to take care of it.
177 lines
6.8 KiB
C
177 lines
6.8 KiB
C
/*-
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* Copyright (c) 2009 Greg Ansley. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* Atmel AT91SAM9G20EK Rev. B Development Card */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <arm/at91/at91board.h>
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#include <arm/at91/at91reg.h>
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#include <arm/at91/at91var.h>
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#include <arm/at91/at91sam9g20reg.h>
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#include <arm/at91/at91_piovar.h>
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#include <arm/at91/at91_pio_sam9g20.h>
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//#include <arm/at91/at91_led.h>
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#define AT91SAM9G20_LED_BASE AT91SAM9G20_PIOA_BASE
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#define AT91SAM9G20_LED_SIZE AT91SAM9G20_PIO_SIZE
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#define AT91SAM9G20_IRQ_LED AT91SAM9G20_IRQ_PIOA
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long
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board_init(void)
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{
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//at91_led_create("power", 0, 9, 0);
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/* PIOB's A periph: Turn USART 0's TX/RX pins */
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB14_DRXD, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB15_DTXD, 1);
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/* PIOB's A periph: Turn USART 0's TX/RX pins */
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB4_TXD0, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB5_RXD0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB22_DSR0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB23_DCD0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB24_DTR0, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB25_RI0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB26_RTS0, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB27_CTS0, 0);
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/* PIOB's A periph: Turn USART 1's TX/RX pins */
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB6_TXD1, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB7_RXD1, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB28_RTS1, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOB_BASE, AT91C_PB29_CTS1, 0);
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#if 1
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/* TWI Two-wire Serial Data */
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA23_TWD, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA24_TWCK, 1);
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#endif
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#if 1
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/*
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* Turn off Clock to DataFlash, conflicts with MCI clock.
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* Remove resistor R42 if you need both DataFlash and SD Card
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* access at the same time
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*/
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at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA2);
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at91_pio_gpio_input(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA2);
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/* Turn off chip select to DataFlash */
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at91_pio_gpio_output(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11, 0);
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at91_pio_gpio_set(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11);
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at91_pio_use_gpio(AT91SAM9G20_PIOC_BASE,AT91C_PIO_PC11);
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/* Multimedia Card */
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA0_MCDB0, 1);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA1_MCCDB, 1);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA3_MCDB3, 1);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA4_MCDB2, 1);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA5_MCDB1, 1);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA8_MCCK, 1);
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at91_pio_use_gpio(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC9);
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#else
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/* SPI0 to DataFlash */
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA1, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA2, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC11,0);
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at91_pio_gpio_input(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA8);
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at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PIO_PA8);
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#endif
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#if 0
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static int at91_base = AT91SAM9G20_BASE;
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volatile uint32_t *PIO = (uint32_t *)(at91_base + AT91SAM9G20_PIOA_BASE);
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volatile uint32_t *RST = (uint32_t *)(at91_base + AT91SAM9G20_RSTC_BASE);
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/*
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* Disable pull-up on:
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* ERX0 (PA14) => PHY ADDR0
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* ERX1 (PA15) => PHY ADDR1
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* RXDV (PA17) => PHY normal mode (not Test mode)
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* ERX2 (PA25) => PHY ADDR2
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* ERX3 (PA26) => PHY ADDR3
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* ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
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*
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* PHY has internal pull-down
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*/
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PIO[PIO_PUDR/4] =
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AT91C_PA14_ERX0 |
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AT91C_PA15_ERX1 |
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AT91C_PA17_ERXDV |
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AT91C_PA25_ERX2 |
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AT91C_PA26_ERX3 |
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AT91C_PA28_ECRS;
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/* Reset PHY - 500ms */
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RST[2] = 0xA5000D01;
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RST[0] = 0xA5000080;
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while (!(RST[1] & (1 << 16))) ;
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PIO[PIO_PUER/4] =
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AT91C_PA14_ERX0 |
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AT91C_PA15_ERX1 |
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AT91C_PA17_ERXDV |
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AT91C_PA25_ERX2 |
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AT91C_PA26_ERX3 |
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AT91C_PA28_ECRS;
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#endif
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/* EMAC */
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA12_ETX0 , 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA13_ETX1, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA14_ERX0, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA15_ERX1, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA16_ETXEN, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA17_ERXDV, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA18_ERXER, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA19_ETXCK, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA20_EMDC, 0);
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at91_pio_use_periph_a(AT91SAM9G20_PIOA_BASE,AT91C_PA21_EMDIO, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA10_ETX2_0, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA11_ETX3_0, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA25_ERX2, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA26_ERX3, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA27_ERXCK, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA28_ECRS, 0);
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at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE,AT91C_PA29_ECOL, 0);
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#if 0
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/* Handle Missing ETXER line */
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at91_pio_use_gpio(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER);
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at91_pio_gpio_output(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER, 0);
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at91_pio_gpio_clear(AT91SAM9G20_PIOA_BASE,AT91C_PA22_ETXER);
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#endif
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return (at91_ramsize());
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}
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