1 /*- 2 * spinconsole.c 3 * 4 * Author: Maksym Sobolyev <sobomax@sippysoft.com> 5 * Copyright (c) 2009 Sippy Software, Inc. 6 * All rights reserved. 7 * 8 * Subject to the following obligations and disclaimer of warranty, use and 9 * redistribution of this software, in source or object code forms, with or 10 * without modifications are expressly permitted by Whistle Communications; 11 * provided, however, that: 12 * 1. Any and all reproductions of the source or object code must include the 13 * copyright notice above and the following disclaimer of warranties; and 14 * 2. No rights are granted, in any manner or form, to use Whistle 15 * Communications, Inc. trademarks, including the mark "WHISTLE 16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 17 * such appears in the above copyright notice or in the software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 */ 37 38 #include <stand.h> 39 #include <bootstrap.h> 40 41 static void spinc_probe(struct console *cp); 42 static int spinc_init(int arg); 43 static void spinc_putchar(int c); 44 static int spinc_getchar(void); 45 static int spinc_ischar(void); 46 47 extern struct console *consoles[]; 48 49 struct console spinconsole = { 50 .c_name = "spinconsole", 51 .c_desc = "spin port", 52 .c_probe = spinc_probe, 53 .c_init = spinc_init, 54 .c_out = spinc_putchar, 55 .c_in = spinc_getchar, 56 .c_ready = spinc_ischar 57 }; 58 59 static struct console *parent = NULL; 60 61 static void 62 spinc_probe(struct console *cp) 63 { 64 65 if (parent == NULL) 66 parent = consoles[0]; 67 parent->c_probe(cp); 68 } 69 70 static int 71 spinc_init(int arg) 72 { 73 74 return (parent->c_init(arg)); 75 } 76 77 static void 78 spinc_putchar(int c) 79 { 80 static unsigned tw_chars = 0x5C2D2F7C; /* "\-/|" */ 81 static time_t lasttime = 0; 82 time_t now; 83 84 now = time(0); 85 if (now < (lasttime + 1)) 86 return; 87 #ifdef TERM_EMU 88 if (lasttime > 0) 89 parent->c_out('\b'); 90 #endif 91 lasttime = now; 92 parent->c_out((char)tw_chars); 93 tw_chars = (tw_chars >> 8) | ((tw_chars & (unsigned long)0xFF) << 24); 94 } 95 96 static int 97 spinc_getchar(void) 98 { 99 100 return (-1); 101 } 102 103 static int 104 spinc_ischar(void) 105 { 106 107 return (0); 108 } 109