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 #ifdef MPC85XX 59 return ((b1->bsh == b2->bsh) ? 1 : 0); 60 #else 61 return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0); 62 #endif 63 } 64 65 #ifdef MPC85XX 66 int 67 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 68 { 69 struct uart_class *class; 70 71 class = &uart_ns8250_class; 72 if (class == NULL) 73 class = &uart_quicc_class; 74 if (class == NULL) 75 return (ENXIO); 76 77 /* Check the environment. */ 78 return (uart_getenv(devtype, di, class)); 79 } 80 #else 81 int 82 uart_cpu_getdev(int devtype, struct uart_devinfo *di) 83 { 84 char buf[64]; 85 struct uart_class *class; 86 phandle_t input, opts; 87 int error; 88 89 class = &uart_z8530_class; 90 if (class == NULL) 91 return (ENXIO); 92 93 if ((opts = OF_finddevice("/options")) == -1) 94 return (ENXIO); 95 switch (devtype) { 96 case UART_DEV_CONSOLE: 97 if (OF_getprop(opts, "input-device", buf, sizeof(buf)) == -1) 98 return (ENXIO); 99 input = OF_finddevice(buf); 100 if (input == -1) 101 return (ENXIO); 102 if (OF_getprop(opts, "output-device", buf, sizeof(buf)) == -1) 103 return (ENXIO); 104 if (OF_finddevice(buf) != input) 105 return (ENXIO); 106 break; 107 case UART_DEV_DBGPORT: 108 if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf))) 109 return (ENXIO); 110 input = OF_finddevice(buf); 111 if (input == -1) 112 return (ENXIO); 113 break; 114 default: 115 return (EINVAL); 116 } 117 118 if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 119 return (ENXIO); 120 if (strcmp(buf, "serial") != 0) 121 return (ENXIO); 122 if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 123 return (ENXIO); 124 125 if (strcmp(buf, "ch-a") == 0) { 126 class = &uart_z8530_class; 127 di->bas.regshft = 4; 128 di->bas.chan = 1; 129 } else if (strcmp(buf,"serial") == 0) { 130 class = &uart_ns8250_class; 131 di->bas.regshft = 0; 132 di->bas.chan = 0; 133 } else 134 return (ENXIO); 135 136 error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh); 137 if (error) 138 return (error); 139 140 di->ops = uart_getops(class); 141 142 if (OF_getprop(input, "clock-frequency", &di->bas.rclk, 143 sizeof(di->bas.rclk)) == -1) 144 di->bas.rclk = 230400; 145 if (OF_getprop(input, "current-speed", &di->baudrate, 146 sizeof(di->baudrate)) == -1) 147 di->baudrate = 0; 148 149 di->databits = 8; 150 di->stopbits = 1; 151 di->parity = UART_PARITY_NONE; 152 return (0); 153 } 154 #endif 155