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 (!kfp->f_tg_kernel_support) { 45 /* 46 * Loaded kernel does not have vt/vbe backend, 47 * switch console to text mode. 48 */ 49 if (vbe_available()) 50 bios_set_text_mode(VGA_TEXT_MODE); 51 return; 52 } 53 54 if (vbe_available()) { 55 file_addmetadata(kfp, MODINFOMD_VBE_FB, 56 sizeof(gfx_state.tg_fb), &gfx_state.tg_fb); 57 } 58 } 59 60 int 61 bi_getboothowto(char *kargs) 62 { 63 char *curpos, *next, *string; 64 int howto; 65 int vidconsole; 66 67 howto = boot_parse_cmdline(kargs); 68 howto |= boot_env_to_howto(); 69 70 /* Enable selected consoles */ 71 string = next = strdup(getenv("console")); 72 vidconsole = 0; 73 while (next != NULL) { 74 curpos = strsep(&next, " ,"); 75 if (*curpos == '\0') 76 continue; 77 if (!strcmp(curpos, "vidconsole")) 78 vidconsole = 1; 79 else if (!strcmp(curpos, "comconsole")) 80 howto |= RB_SERIAL; 81 else if (!strcmp(curpos, "nullconsole")) 82 howto |= RB_MUTE; 83 } 84 85 if (vidconsole && (howto & RB_SERIAL)) 86 howto |= RB_MULTIPLE; 87 88 /* 89 * XXX: Note that until the kernel is ready to respect multiple consoles 90 * for the boot messages, the first named console is the primary console 91 */ 92 if (!strcmp(string, "vidconsole")) 93 howto &= ~RB_SERIAL; 94 95 free(string); 96 97 return(howto); 98 } 99 100 void 101 bi_setboothowto(int howto) 102 { 103 104 boot_howto_to_env(howto); 105 } 106 107 /* 108 * Copy the environment into the load area starting at (addr). 109 * Each variable is formatted as <name>=<value>, with a single nul 110 * separating each variable, and a double nul terminating the environment. 111 */ 112 vm_offset_t 113 bi_copyenv(vm_offset_t addr) 114 { 115 struct env_var *ep; 116 117 /* traverse the environment */ 118 for (ep = environ; ep != NULL; ep = ep->ev_next) { 119 i386_copyin(ep->ev_name, addr, strlen(ep->ev_name)); 120 addr += strlen(ep->ev_name); 121 i386_copyin("=", addr, 1); 122 addr++; 123 if (ep->ev_value != NULL) { 124 i386_copyin(ep->ev_value, addr, strlen(ep->ev_value)); 125 addr += strlen(ep->ev_value); 126 } 127 i386_copyin("", addr, 1); 128 addr++; 129 } 130 i386_copyin("", addr, 1); 131 addr++; 132 return(addr); 133 } 134