1 /*- 2 * Copyright (c) 2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 33 #include <machine/bus.h> 34 35 #include <dev/ofw/openfirm.h> 36 #include <machine/ofw_machdep.h> 37 38 #include <dev/uart/uart.h> 39 #include <dev/uart/uart_cpu.h> 40 41 bus_space_tag_t uart_bus_space_io = PPC_BUS_SPACE_IO; 42 bus_space_tag_t uart_bus_space_mem = PPC_BUS_SPACE_MEM; 43 44 int 45 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 46 { 47 48 return ((b1->bsh == b2->bsh) ? 1 : 0); 49 } 50 51 int 52 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 53 { 54 char buf[64]; 55 phandle_t input, opts; 56 int error; 57 58 if ((opts = OF_finddevice("/options")) == -1) 59 return (ENXIO); 60 switch (devtype) { 61 case UART_DEV_CONSOLE: 62 if (OF_getprop(opts, "input-device", buf, sizeof(buf)) == -1) 63 return (ENXIO); 64 input = OF_finddevice(buf); 65 if (input == -1) 66 return (ENXIO); 67 if (OF_getprop(opts, "output-device", buf, sizeof(buf)) == -1) 68 return (ENXIO); 69 if (OF_finddevice(buf) != input) 70 return (ENXIO); 71 break; 72 case UART_DEV_DBGPORT: 73 if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf))) 74 return (ENXIO); 75 input = OF_finddevice(buf); 76 if (input == -1) 77 return (ENXIO); 78 break; 79 default: 80 return (EINVAL); 81 } 82 83 if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 84 return (ENXIO); 85 if (strcmp(buf, "serial") != 0) 86 return (ENXIO); 87 if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 88 return (ENXIO); 89 if (strcmp(buf, "ch-a")) 90 return (ENXIO); 91 92 error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh); 93 if (error) 94 return (error); 95 96 di->ops = uart_z8530_ops; 97 98 di->bas.rclk = 230400; 99 di->bas.chan = 1; 100 di->bas.regshft = 4; 101 102 di->baudrate = 0; 103 di->databits = 8; 104 di->stopbits = 1; 105 di->parity = UART_PARITY_NONE; 106 return (0); 107 } 108