108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*-
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* Copyright (c) 2006 Marcel Moolenaar
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* 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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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 <sys/param.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/ofw_machdep.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_cpu.h>
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bus_space_tag_t uart_bus_space_io = PPC_BUS_SPACE_IO;
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bus_space_tag_t uart_bus_space_mem = PPC_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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return ((b1->bsh == 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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char buf[64];
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phandle_t input, opts;
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int error;
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if ((opts = OF_finddevice("/options")) == -1)
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return (ENXIO);
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switch (devtype) {
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case UART_DEV_CONSOLE:
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if (OF_getprop(opts, "input-device", buf, sizeof(buf)) == -1)
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return (ENXIO);
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input = OF_finddevice(buf);
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if (input == -1)
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return (ENXIO);
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if (OF_getprop(opts, "output-device", buf, sizeof(buf)) == -1)
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return (ENXIO);
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if (OF_finddevice(buf) != input)
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return (ENXIO);
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break;
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case UART_DEV_DBGPORT:
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if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf)))
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return (ENXIO);
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input = OF_finddevice(buf);
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if (input == -1)
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return (ENXIO);
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break;
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default:
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return (EINVAL);
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}
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if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
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return (ENXIO);
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if (strcmp(buf, "serial") != 0)
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return (ENXIO);
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if (OF_getprop(input, "name", buf, sizeof(buf)) == -1)
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return (ENXIO);
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if (strcmp(buf, "ch-a"))
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return (ENXIO);
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error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh);
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if (error)
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return (error);
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di->ops = uart_z8530_ops;
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di->bas.rclk = 230400;
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di->bas.chan = 1;
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di->bas.regshft = 4;
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di->baudrate = 0;
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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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return (0);
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}
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