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 "opt_platform.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 35 #include <machine/bus.h> 36 37 #ifndef MPC85XX 38 #include <dev/ofw/openfirm.h> 39 #include <machine/ofw_machdep.h> 40 #endif 41 42 #include <dev/uart/uart.h> 43 #include <dev/uart/uart_cpu.h> 44 45 #ifdef MPC85XX 46 bus_space_tag_t uart_bus_space_io = &bs_be_tag; 47 bus_space_tag_t uart_bus_space_mem = &bs_be_tag; 48 #else 49 bus_space_tag_t uart_bus_space_io = &bs_le_tag; 50 bus_space_tag_t uart_bus_space_mem = &bs_le_tag; 51 #endif 52 53 int 54 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 55 { 56 57 return ((b1->bsh == b2->bsh) ? 1 : 0); 58 } 59 60 #ifdef MPC85XX 61 int 62 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 63 { 64 struct uart_class *class; 65 66 class = &uart_ns8250_class; 67 if (class == NULL) 68 class = &uart_quicc_class; 69 if (class == NULL) 70 return (ENXIO); 71 72 /* Check the environment. */ 73 return (uart_getenv(devtype, di, class)); 74 } 75 #else 76 int 77 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 78 { 79 char buf[64]; 80 struct uart_class *class; 81 phandle_t input, opts; 82 int error; 83 84 class = &uart_z8530_class; 85 if (class == NULL) 86 return (ENXIO); 87 88 if ((opts = OF_finddevice("/options")) == -1) 89 return (ENXIO); 90 switch (devtype) { 91 case UART_DEV_CONSOLE: 92 if (OF_getprop(opts, "input-device", buf, sizeof(buf)) == -1) 93 return (ENXIO); 94 input = OF_finddevice(buf); 95 if (input == -1) 96 return (ENXIO); 97 if (OF_getprop(opts, "output-device", buf, sizeof(buf)) == -1) 98 return (ENXIO); 99 if (OF_finddevice(buf) != input) 100 return (ENXIO); 101 break; 102 case UART_DEV_DBGPORT: 103 if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf))) 104 return (ENXIO); 105 input = OF_finddevice(buf); 106 if (input == -1) 107 return (ENXIO); 108 break; 109 default: 110 return (EINVAL); 111 } 112 113 if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 114 return (ENXIO); 115 if (strcmp(buf, "serial") != 0) 116 return (ENXIO); 117 if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 118 return (ENXIO); 119 if (strcmp(buf, "ch-a")) 120 return (ENXIO); 121 122 error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh); 123 if (error) 124 return (error); 125 126 di->ops = uart_getops(class); 127 128 di->bas.rclk = 230400; 129 di->bas.chan = 1; 130 di->bas.regshft = 4; 131 132 di->baudrate = 0; 133 di->databits = 8; 134 di->stopbits = 1; 135 di->parity = UART_PARITY_NONE; 136 return (0); 137 } 138 #endif 139