1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 #pragma ident "%Z%%M% %I% %E% SMI" 26 27 #include <sys/sysmacros.h> 28 #include <sys/salib.h> 29 #include <sys/promif.h> 30 31 #define MINALLOC 8 32 #define TOPMEM ((caddr_t)0x1000000) 33 34 extern caddr_t _end; 35 extern struct boot_fs_ops promfs_ops; 36 37 struct boot_fs_ops *boot_fsw[] = { 38 &promfs_ops, 39 }; 40 int boot_nfsw = sizeof (boot_fsw) / sizeof (boot_fsw[0]); 41 42 void * 43 bkmem_alloc(size_t s) 44 { 45 static caddr_t next; 46 caddr_t ret; 47 48 if (next == NULL) 49 next = (caddr_t)roundup((uintptr_t)&_end, MINALLOC); 50 ret = next; 51 next += roundup(s, MINALLOC); 52 if (next >= TOPMEM) 53 prom_panic("out of memory"); 54 return (ret); 55 } 56 57 /*ARGSUSED*/ 58 void 59 bkmem_free(void *p, size_t s) 60 { 61 } 62 63 int 64 cons_getchar(void) 65 { 66 register int c; 67 68 while ((c = prom_mayget()) == -1) 69 ; 70 if (c == '\r') { 71 prom_putchar(c); 72 c = '\n'; 73 } 74 if (c == 0177 || c == '\b') { 75 prom_putchar('\b'); 76 prom_putchar(' '); 77 c = '\b'; 78 } 79 prom_putchar(c); 80 return (c); 81 } 82 83 char * 84 cons_gets(char *buf, int n) 85 { 86 char *lp; 87 char *limit; 88 int c; 89 90 lp = buf; 91 limit = &buf[n - 1]; 92 for (;;) { 93 c = cons_getchar() & 0177; 94 switch (c) { 95 case '\n': 96 case '\r': 97 *lp = '\0'; 98 return (buf); 99 case '\b': 100 if (lp > buf) 101 lp--; 102 continue; 103 case 'u'&037: /* ^U */ 104 lp = buf; 105 prom_putchar('\r'); 106 prom_putchar('\n'); 107 continue; 108 case 0: 109 continue; 110 default: 111 if (lp < limit) 112 *lp++ = (char)c; 113 else 114 prom_putchar('\a'); /* bell */ 115 } 116 } 117 } 118