1 /* $OpenBSD: machdep.c,v 1.1 2019/05/10 21:20:42 mlarkin Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Tom Cosgrove 5 * Copyright (c) 1997-1999 Michael Shalayeff 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "libsa.h" 31 #include "biosdev.h" 32 #include <machine/apmvar.h> 33 #include <machine/biosvar.h> 34 #include <machine/specialreg.h> 35 #include <machine/vmmvar.h> 36 37 #include "efiboot.h" 38 39 volatile struct BIOS_regs BIOS_regs; 40 41 #if defined(DEBUG) 42 #define CKPT(c) (*(u_int16_t*)0xb8148 = 0x4700 + (c)) 43 #else 44 #define CKPT(c) /* c */ 45 #endif 46 47 const char *vmm_hv_signature = VMM_HV_SIGNATURE; 48 49 void 50 machdep(void) 51 { 52 int i, j, vmm = 0; 53 struct i386_boot_probes *pr; 54 uint32_t dummy, ebx, ecx, edx; 55 dev_t dev; 56 57 /* 58 * The list of probe routines is now in conf.c. 59 */ 60 for (i = 0; i < nibprobes; i++) { 61 pr = &probe_list[i]; 62 if (pr != NULL) { 63 printf("%s:", pr->name); 64 65 for (j = 0; j < pr->count; j++) { 66 (*(pr->probes)[j])(); 67 } 68 69 printf("\n"); 70 } 71 } 72 73 CPUID(0x1, dummy, dummy, ecx, dummy); 74 if (ecx & CPUIDECX_HV) { 75 CPUID(0x40000000, dummy, ebx, ecx, edx); 76 if (memcmp(&ebx, &vmm_hv_signature[0], sizeof(uint32_t)) == 0 && 77 memcmp(&ecx, &vmm_hv_signature[4], sizeof(uint32_t)) == 0 && 78 memcmp(&edx, &vmm_hv_signature[8], sizeof(uint32_t)) == 0) 79 vmm = 1; 80 } 81 82 /* Set console to com0/115200 by default in vmm */ 83 if (vmm) { 84 dev = ttydev("com0"); 85 cnspeed(dev, 115200); 86 cnset(dev); 87 } 88 } 89 90 int 91 check_skip_conf(void) 92 { 93 /* Return non-zero (skip boot.conf) if Control "shift" key down */ 94 return (efi_cons_getshifts(0) & 0x04); 95 } 96