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 #include <vm/vm.h> 35 #include <vm/pmap.h> 36 37 #include <machine/bus.h> 38 39 #ifndef MPC85XX 40 #include <dev/ofw/openfirm.h> 41 #include <machine/ofw_machdep.h> 42 #endif 43 44 #include <dev/uart/uart.h> 45 #include <dev/uart/uart_cpu.h> 46 47 #ifdef MPC85XX 48 bus_space_tag_t uart_bus_space_io = &bs_be_tag; 49 bus_space_tag_t uart_bus_space_mem = &bs_be_tag; 50 #else 51 bus_space_tag_t uart_bus_space_io = &bs_le_tag; 52 bus_space_tag_t uart_bus_space_mem = &bs_le_tag; 53 #endif 54 55 int 56 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 57 { 58 return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0); 59 } 60 61 #ifdef MPC85XX 62 int 63 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 64 { 65 struct uart_class *class; 66 67 class = &uart_ns8250_class; 68 if (class == NULL) 69 class = &uart_quicc_class; 70 if (class == NULL) 71 return (ENXIO); 72 73 /* Check the environment. */ 74 return (uart_getenv(devtype, di, class)); 75 } 76 #else 77 int 78 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 79 { 80 char buf[64]; 81 struct uart_class *class; 82 phandle_t input, opts; 83 int error; 84 85 class = &uart_z8530_class; 86 if (class == NULL) 87 return (ENXIO); 88 89 if ((opts = OF_finddevice("/options")) == -1) 90 return (ENXIO); 91 switch (devtype) { 92 case UART_DEV_CONSOLE: 93 if (OF_getprop(opts, "input-device", buf, sizeof(buf)) == -1) 94 return (ENXIO); 95 input = OF_finddevice(buf); 96 if (input == -1) 97 return (ENXIO); 98 if (OF_getprop(opts, "output-device", buf, sizeof(buf)) == -1) 99 return (ENXIO); 100 if (OF_finddevice(buf) != input) 101 return (ENXIO); 102 break; 103 case UART_DEV_DBGPORT: 104 if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf))) 105 return (ENXIO); 106 input = OF_finddevice(buf); 107 if (input == -1) 108 return (ENXIO); 109 break; 110 default: 111 return (EINVAL); 112 } 113 114 if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 115 return (ENXIO); 116 if (strcmp(buf, "serial") != 0) 117 return (ENXIO); 118 if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 119 return (ENXIO); 120 121 if (strcmp(buf, "ch-a") == 0) { 122 class = &uart_z8530_class; 123 di->bas.regshft = 4; 124 di->bas.chan = 1; 125 } else if (strcmp(buf,"serial") == 0) { 126 class = &uart_ns8250_class; 127 di->bas.regshft = 0; 128 di->bas.chan = 0; 129 } else 130 return (ENXIO); 131 132 error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh); 133 if (error) 134 return (error); 135 136 di->ops = uart_getops(class); 137 138 if (OF_getprop(input, "clock-frequency", &di->bas.rclk, 139 sizeof(di->bas.rclk)) == -1) 140 di->bas.rclk = 230400; 141 if (OF_getprop(input, "current-speed", &di->baudrate, 142 sizeof(di->baudrate)) == -1) 143 di->baudrate = 0; 144 145 di->databits = 8; 146 di->stopbits = 1; 147 di->parity = UART_PARITY_NONE; 148 return (0); 149 } 150 #endif 151