1 /*- 2 * Copyright (c) 2004 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 #include <sys/bus.h> 33 #include <sys/kernel.h> 34 #include <machine/bus.h> 35 36 #include <gdb/gdb.h> 37 38 #include <dev/uart/uart.h> 39 #include <dev/uart/uart_cpu.h> 40 41 static gdb_probe_f uart_dbg_probe; 42 static gdb_init_f uart_dbg_init; 43 static gdb_term_f uart_dbg_term; 44 static gdb_getc_f uart_dbg_getc; 45 static gdb_putc_f uart_dbg_putc; 46 47 GDB_DBGPORT(uart, uart_dbg_probe, uart_dbg_init, uart_dbg_term, 48 uart_dbg_getc, uart_dbg_putc); 49 50 static struct uart_devinfo uart_dbgport; 51 52 static int 53 uart_dbg_probe(void) 54 { 55 56 if (uart_cpu_getdev(UART_DEV_DBGPORT, &uart_dbgport)) 57 return (-1); 58 59 if (uart_probe(&uart_dbgport)) 60 return (-1); 61 62 return (0); 63 } 64 65 static void 66 uart_dbg_init(void) 67 { 68 69 uart_dbgport.type = UART_DEV_DBGPORT; 70 uart_add_sysdev(&uart_dbgport); 71 uart_init(&uart_dbgport); 72 } 73 74 static void 75 uart_dbg_term(void) 76 { 77 78 uart_term(&uart_dbgport); 79 } 80 81 static void 82 uart_dbg_putc(int c) 83 { 84 85 uart_putc(&uart_dbgport, c); 86 } 87 88 static int 89 uart_dbg_getc(void) 90 { 91 92 return (uart_poll(&uart_dbgport)); 93 } 94