9b3055b7f2
Obtained from: ABT Systems Ltd MFC after: 1 month X-MFC with: r303100 Sponsored by: The FreeBSD Foundation
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under sponsorship from
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* the FreeBSD Foundation.
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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 THE 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 THE 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_bus.h>
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#include <dev/uart/uart_cpu.h>
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#include <dev/uart/uart_cpu_fdt.h>
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/*
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* UART console routines.
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*/
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bus_space_tag_t uart_bus_space_io;
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bus_space_tag_t uart_bus_space_mem;
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int
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uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
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{
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if (b1->bst != b2->bst)
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return (0);
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if (pmap_kextract(b1->bsh) == 0)
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return (0);
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if (pmap_kextract(b2->bsh) == 0)
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return (0);
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return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0);
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}
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int
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uart_cpu_getdev(int devtype, struct uart_devinfo *di)
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{
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struct uart_class *class;
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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u_int shift, rclk;
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int br, err;
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/* Allow overriding the FDT using the environment. */
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class = &uart_ns8250_class;
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err = uart_getenv(devtype, di, class);
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if (!err)
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return (0);
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if (devtype != UART_DEV_CONSOLE)
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return (ENXIO);
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err = uart_cpu_fdt_probe(&class, &bst, &bsh, &br, &rclk, &shift);
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if (err != 0)
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return (err);
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/*
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* Finalize configuration.
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*/
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di->bas.chan = 0;
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di->bas.regshft = shift;
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di->baudrate = br;
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di->bas.rclk = rclk;
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di->ops = uart_getops(class);
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di->databits = 8;
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di->stopbits = 1;
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di->parity = UART_PARITY_NONE;
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di->bas.bst = bst;
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di->bas.bsh = bsh;
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uart_bus_space_mem = di->bas.bst;
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uart_bus_space_io = NULL;
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return (err);
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}
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