1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <sys/param.h> 32 #include <sys/reboot.h> 33 #include <sys/boot.h> 34 #include <sys/linker.h> 35 #include <gfx_fb.h> 36 #include "bootstrap.h" 37 #include "libi386.h" 38 #include "vbe.h" 39 #include "btxv86.h" 40 41 void 42 bi_load_vbe_data(struct preloaded_file *kfp) 43 { 44 if (vbe_available()) { 45 file_addmetadata(kfp, MODINFOMD_VBE_FB, 46 sizeof(gfx_state.tg_fb), &gfx_state.tg_fb); 47 } 48 } 49 50 int 51 bi_getboothowto(char *kargs) 52 { 53 char *curpos, *next, *string; 54 int howto; 55 int vidconsole; 56 57 howto = boot_parse_cmdline(kargs); 58 howto |= boot_env_to_howto(); 59 60 /* Enable selected consoles */ 61 string = next = strdup(getenv("console")); 62 vidconsole = 0; 63 while (next != NULL) { 64 curpos = strsep(&next, " ,"); 65 if (*curpos == '\0') 66 continue; 67 if (!strcmp(curpos, "vidconsole")) 68 vidconsole = 1; 69 else if (!strcmp(curpos, "comconsole")) 70 howto |= RB_SERIAL; 71 else if (!strcmp(curpos, "nullconsole")) 72 howto |= RB_MUTE; 73 } 74 75 if (vidconsole && (howto & RB_SERIAL)) 76 howto |= RB_MULTIPLE; 77 78 /* 79 * XXX: Note that until the kernel is ready to respect multiple consoles 80 * for the boot messages, the first named console is the primary console 81 */ 82 if (!strcmp(string, "vidconsole")) 83 howto &= ~RB_SERIAL; 84 85 free(string); 86 87 return(howto); 88 } 89 90 void 91 bi_setboothowto(int howto) 92 { 93 94 boot_howto_to_env(howto); 95 } 96 97 /* 98 * Copy the environment into the load area starting at (addr). 99 * Each variable is formatted as <name>=<value>, with a single nul 100 * separating each variable, and a double nul terminating the environment. 101 */ 102 vm_offset_t 103 bi_copyenv(vm_offset_t addr) 104 { 105 struct env_var *ep; 106 107 /* traverse the environment */ 108 for (ep = environ; ep != NULL; ep = ep->ev_next) { 109 i386_copyin(ep->ev_name, addr, strlen(ep->ev_name)); 110 addr += strlen(ep->ev_name); 111 i386_copyin("=", addr, 1); 112 addr++; 113 if (ep->ev_value != NULL) { 114 i386_copyin(ep->ev_value, addr, strlen(ep->ev_value)); 115 addr += strlen(ep->ev_value); 116 } 117 i386_copyin("", addr, 1); 118 addr++; 119 } 120 i386_copyin("", addr, 1); 121 addr++; 122 return(addr); 123 } 124