FreeBSD/Linux Kernel Cross Reference
sys/arm/at91/uart_cpu_at91rm9200usart.c

     /*-
      * Copyright (c) 2003 Marcel Moolenaar
      * 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 THE AUTHOR ``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 THE AUTHOR 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.
     */
    
    #include "opt_uart.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/cons.h>
    #include <machine/bus.h>
    
    #include <dev/uart/uart.h>
    #include <dev/uart/uart_cpu.h>
    
    #include <arm/at91/at91rm92reg.h>
    
    bus_space_tag_t uart_bus_space_io;
    bus_space_tag_t uart_bus_space_mem;
    
    extern struct uart_class at91_usart_class;
    extern struct bus_space at91_bs_tag;
    
    int
    uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
    {
            return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
    }
    
    int
    uart_cpu_getdev(int devtype, struct uart_devinfo *di)
    {
            struct uart_class *class;
    
            class = &at91_usart_class;
            di->ops = uart_getops(class);
            di->bas.chan = 0;
            di->bas.bst = &at91_bs_tag;
            /* 
             * XXX: Not pretty, but will work because we map VA == PA early
             * for the last 1MB of memory.
             */
    #ifdef SKYEYE_WORKAROUNDS
            di->bas.bsh = AT91RM92_BASE + AT91RM92_USART0_BASE;
            di->baudrate = 38400;
    #else
            di->bas.bsh = AT91RM92_BASE + AT91RM92_SYS_BASE + DBGU;
            di->baudrate = 115200;
    #endif
            di->bas.regshft = 0;
            di->bas.rclk = 0;
            di->databits = 8;
            di->stopbits = 1;
            di->parity = UART_PARITY_NONE;
            uart_bus_space_io = &at91_bs_tag;
            uart_bus_space_mem = NULL;
            /* Check the environment for overrides */
            uart_getenv(devtype, di, class);
            return (0);
    }

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