From: Peter Dinda Date: Thu, 18 Jun 2015 21:54:06 +0000 (-0500) Subject: Factoring of BIOS setup so that it can be reused during reset X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=749653dd91e8d012f77c9745421f2b7cd0d3da93 Factoring of BIOS setup so that it can be reused during reset --- diff --git a/palacios/include/palacios/vmm_bios.h b/palacios/include/palacios/vmm_bios.h new file mode 100644 index 0000000..eafcf7e --- /dev/null +++ b/palacios/include/palacios/vmm_bios.h @@ -0,0 +1,27 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2015, The V3VEE Project + * All rights reserved. + * + * Author: Peter Dinda + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + +#ifndef __VMM_BIOS_H__ +#define __VMM_BIOS_H__ + +#include + +int v3_setup_bioses(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) ; + + +#endif diff --git a/palacios/src/palacios/Makefile b/palacios/src/palacios/Makefile index 1bbce2a..733bfe7 100644 --- a/palacios/src/palacios/Makefile +++ b/palacios/src/palacios/Makefile @@ -45,7 +45,8 @@ obj-y := \ vmm_exits.o \ vmm_events.o \ vmm_perftune.o \ - vmm_fw_cfg.o + vmm_fw_cfg.o \ + vmm_bios.o obj-$(V3_CONFIG_SWAPPING) += vmm_swapping.o diff --git a/palacios/src/palacios/vmm_bios.c b/palacios/src/palacios/vmm_bios.c new file mode 100644 index 0000000..5402231 --- /dev/null +++ b/palacios/src/palacios/vmm_bios.c @@ -0,0 +1,185 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2015, The V3VEE Project + * All rights reserved. + * + * Author: Peter Dinda + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + +#include +#include +#include + + + +int v3_setup_bioses(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) +{ + + v3_cfg_tree_t * bios_tree = NULL; + v3_cfg_tree_t * bios_list = NULL; + + bios_tree = v3_cfg_subtree(cfg, "bioses"); + + + if (!v3_cfg_val(bios_tree, "disable_vgabios")) { + +#if defined(V3_CONFIG_SEABIOS) || defined(V3_CONFIG_BOCHSBIOS) + +#define VGABIOS_START 0x000c0000 + /* layout vgabios */ + { + extern uint8_t v3_vgabios_start[]; + extern uint8_t v3_vgabios_end[]; + void * vgabios_dst = 0; + + if (v3_gpa_to_hva(&(vm->cores[0]), VGABIOS_START, (addr_t *)&vgabios_dst) == -1) { + PrintError(vm, VCORE_NONE, "Could not find VGABIOS destination address\n"); + return -1; + } + + V3_Print(vm,VCORE_NONE,"Mapping VGA BIOS of %llu bytes at gpa %p (hva %p)\n", (uint64_t)(v3_vgabios_end-v3_vgabios_start), (void*)VGABIOS_START,vgabios_dst); + memcpy(vgabios_dst, v3_vgabios_start, v3_vgabios_end - v3_vgabios_start); + } + +#endif + + } + + + if (!v3_cfg_val(bios_tree, "disable_rombios")) { + + /* layout rombios */ + { + extern uint8_t v3_rombios_start[]; + extern uint8_t v3_rombios_end[]; + void * rombios_dst = 0; + + + + if (v3_gpa_to_hva(&(vm->cores[0]), V3_CONFIG_BIOS_START, (addr_t *)&rombios_dst) == -1) { + PrintError(vm, VCORE_NONE, "Could not find ROMBIOS destination address\n"); + return -1; + } + + V3_Print(vm,VCORE_NONE,"Mapping BIOS of %llu bytes at gpa %p (hva %p)\n", (uint64_t)(v3_rombios_end-v3_rombios_start), (void*)V3_CONFIG_BIOS_START,rombios_dst); + memcpy(rombios_dst, v3_rombios_start, v3_rombios_end - v3_rombios_start); + +#ifdef V3_CONFIG_SEABIOS + +#define SEABIOS_HIGH_START 0xfffe0000 +#define SEABIOS_HIGH_END 0xffffffff + + if (v3_get_mem_region(vm,V3_MEM_CORE_ANY, SEABIOS_HIGH_START)) { + // it is already mapped, we are done + // note it's mapped to the same place as the low memory copy + // so it's now pointing to the fresh copy + V3_Print(vm,VCORE_NONE,"BIOS is already mapped\n"); + } else { + if (v3_add_shadow_mem(vm, V3_MEM_CORE_ANY, + SEABIOS_HIGH_START, SEABIOS_HIGH_END, + (addr_t)V3_PAddr(rombios_dst)) == -1) { + PrintError(vm, VCORE_NONE, "Error mapping SEABIOS to end of memory\n"); + return -1; + } + V3_Print(vm,VCORE_NONE,"BIOS mapped\n"); + } + + V3_Print(vm,VCORE_NONE,"Additionally mapping SEABIOS of %llu bytes at gpa %p\n", (uint64_t)(v3_rombios_end-v3_rombios_start), (void*)SEABIOS_HIGH_START); +#endif + + } + + { + void *ba; + +// traditional BIOS data area (and IVT, etc). Technically only 0x400-0x4ff is the BDA +#define BDA_START 0x0 +#define BDA_END 0xfff + +// Extended BDA and EBDA2. Technically not standardized. Usually at the +// end of the 640K chunk. We're just using that last page to play it save +#define EBDA_START 0x9f000 +#define EBDA_END 0x9ffff + + if (v3_gpa_to_hva(&(vm->cores[0]), BDA_START, (addr_t *)&ba) == -1) { + PrintError(vm, VCORE_NONE, "Could not find BDA destination address\n"); + return -1; + } + + memset(ba,0,(BDA_END-BDA_START+1)); + + V3_Print(vm,VCORE_NONE,"Cleared BDA %p (HVA %p) through %p\n",(void*)BDA_START,ba,(void*)BDA_END); + + if (v3_gpa_to_hva(&(vm->cores[0]), EBDA_START, (addr_t *)&ba) == -1) { + PrintError(vm, VCORE_NONE, "Could not find EBDA destination address\n"); + return -1; + } + + memset(ba,0,(EBDA_END-EBDA_START+1)); + + V3_Print(vm,VCORE_NONE,"Cleared EBDA %p (HVA %p) through %p\n",(void*)EBDA_START,ba,(void*)EBDA_END); + } + + } + + + + bios_list = v3_cfg_subtree(bios_tree, "bios"); + + while (bios_list) { + char * id = v3_cfg_val(bios_list, "file"); + char * addr = v3_cfg_val(bios_list, "address"); + uint64_t file_ptr = 0; + void * dest = NULL; + struct v3_cfg_file * file = NULL; + + if (!id) { + PrintError(vm, VCORE_NONE, "Could not find bios file\n"); + continue; + } + + if (!addr) { + PrintError(vm, VCORE_NONE, "Could not find bios address\n"); + continue; + } + + file = v3_cfg_get_file(vm, id); + if (!file) { + PrintError(vm, VCORE_NONE, "Invalid BIOS file: %s\n", id); + continue; + } + + file_ptr = atox(addr); + + V3_Print(vm, VCORE_NONE, "Copying BIOS ROM (%s) to %p (size=%lld)\n", + id, + (void*)file_ptr, + file->size); + + if (v3_gpa_to_hva(&(vm->cores[0]), (addr_t)file_ptr, (addr_t *)&dest) == -1) { + PrintError(vm, VCORE_NONE, "Could not find BIOS (%s) destination address\n", id); + continue; + } + + memcpy((void*)dest, file->data, file->size); + + V3_Print(vm, VCORE_NONE, "Moving on to next BIOS file\n"); + bios_list = v3_cfg_next_branch(bios_list); + } + + // NOW BLOW AWAY BDA and EBDA here + // possibly also reset CMOS + + + return 0; +} diff --git a/palacios/src/palacios/vmm_config_class.h b/palacios/src/palacios/vmm_config_class.h index 9a508bd..95de131 100644 --- a/palacios/src/palacios/vmm_config_class.h +++ b/palacios/src/palacios/vmm_config_class.h @@ -17,8 +17,7 @@ * redistribute, and modify it as specified in the file "V3VEE_LICENSE". */ -#include - +#include static int pre_config_pc_core(struct guest_info * info, v3_cfg_tree_t * cfg) { @@ -43,114 +42,8 @@ static int post_config_pc_core(struct guest_info * info, v3_cfg_tree_t * cfg) { return 0; } -static int post_config_pc(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { - - v3_cfg_tree_t * bios_tree = NULL; - v3_cfg_tree_t * bios_list = NULL; - - bios_tree = v3_cfg_subtree(cfg, "bioses"); - - - if (!v3_cfg_val(bios_tree, "disable_vgabios")) { - -#if defined(V3_CONFIG_SEABIOS) || defined(V3_CONFIG_BOCHSBIOS) - -#define VGABIOS_START 0x000c0000 - /* layout vgabios */ - { - extern uint8_t v3_vgabios_start[]; - extern uint8_t v3_vgabios_end[]; - void * vgabios_dst = 0; - - if (v3_gpa_to_hva(&(vm->cores[0]), VGABIOS_START, (addr_t *)&vgabios_dst) == -1) { - PrintError(vm, VCORE_NONE, "Could not find VGABIOS destination address\n"); - return -1; - } - - V3_Print(vm,VCORE_NONE,"Mapping VGA BIOS of %llu bytes at address %p\n", (uint64_t)(v3_vgabios_end-v3_vgabios_start), (void*)VGABIOS_START); - memcpy(vgabios_dst, v3_vgabios_start, v3_vgabios_end - v3_vgabios_start); - } - -#endif - - } - - - if (!v3_cfg_val(bios_tree, "disable_rombios")) { - - /* layout rombios */ - { - extern uint8_t v3_rombios_start[]; - extern uint8_t v3_rombios_end[]; - void * rombios_dst = 0; - - - - if (v3_gpa_to_hva(&(vm->cores[0]), V3_CONFIG_BIOS_START, (addr_t *)&rombios_dst) == -1) { - PrintError(vm, VCORE_NONE, "Could not find ROMBIOS destination address\n"); - return -1; - } - - V3_Print(vm,VCORE_NONE,"Mapping BIOS of %llu bytes at address %p\n", (uint64_t)(v3_rombios_end-v3_rombios_start), (void*)V3_CONFIG_BIOS_START); - memcpy(rombios_dst, v3_rombios_start, v3_rombios_end - v3_rombios_start); - -#ifdef V3_CONFIG_SEABIOS - // SEABIOS is also mapped into end of 4GB region - if (v3_add_shadow_mem(vm, V3_MEM_CORE_ANY, - 0xfffe0000, 0xffffffff, - (addr_t)V3_PAddr(rombios_dst)) == -1) { - PrintError(vm, VCORE_NONE, "Error mapping SEABIOS to end of memory\n"); - return -1; - } - V3_Print(vm,VCORE_NONE,"Additionally mapping SEABIOS of %llu bytes at address %p\n", (uint64_t)(v3_rombios_end-v3_rombios_start), (void*)0xfffe0000); -#endif - - } - } - - bios_list = v3_cfg_subtree(bios_tree, "bios"); - - while (bios_list) { - char * id = v3_cfg_val(bios_list, "file"); - char * addr = v3_cfg_val(bios_list, "address"); - uint64_t file_ptr = 0; - void * dest = NULL; - struct v3_cfg_file * file = NULL; - - if (!id) { - PrintError(vm, VCORE_NONE, "Could not find bios file\n"); - continue; - } - - if (!addr) { - PrintError(vm, VCORE_NONE, "Could not find bios address\n"); - continue; - } - - file = v3_cfg_get_file(vm, id); - if (!file) { - PrintError(vm, VCORE_NONE, "Invalid BIOS file: %s\n", id); - continue; - } - - file_ptr = atox(addr); - - V3_Print(vm, VCORE_NONE, "Copying BIOS ROM (%s) to %p (size=%lld)\n", - id, - (void*)file_ptr, - file->size); - - if (v3_gpa_to_hva(&(vm->cores[0]), (addr_t)file_ptr, (addr_t *)&dest) == -1) { - PrintError(vm, VCORE_NONE, "Could not find BIOS (%s) destination address\n", id); - continue; - } - - memcpy((void*)dest, file->data, file->size); - - V3_Print(vm, VCORE_NONE, "Moving on to next BIOS file\n"); - bios_list = v3_cfg_next_branch(bios_list); - } - - return 0; +static int post_config_pc(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) +{ + return v3_setup_bioses(vm,cfg); }