diff options
Diffstat (limited to 'qemu/hw/i386/pc_sysfw.c')
| -rw-r--r-- | qemu/hw/i386/pc_sysfw.c | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/qemu/hw/i386/pc_sysfw.c b/qemu/hw/i386/pc_sysfw.c deleted file mode 100644 index f915ad0a3..000000000 --- a/qemu/hw/i386/pc_sysfw.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - * QEMU PC System Firmware - * - * Copyright (c) 2003-2004 Fabrice Bellard - * Copyright (c) 2011-2012 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "sysemu/block-backend.h" -#include "qemu/error-report.h" -#include "hw/sysbus.h" -#include "hw/hw.h" -#include "hw/i386/pc.h" -#include "hw/boards.h" -#include "hw/loader.h" -#include "sysemu/sysemu.h" -#include "hw/block/flash.h" -#include "sysemu/kvm.h" - -#define BIOS_FILENAME "bios.bin" - -typedef struct PcSysFwDevice { - SysBusDevice busdev; - uint8_t isapc_ram_fw; -} PcSysFwDevice; - -static void pc_isa_bios_init(MemoryRegion *rom_memory, - MemoryRegion *flash_mem, - int ram_size) -{ - int isa_bios_size; - MemoryRegion *isa_bios; - uint64_t flash_size; - void *flash_ptr, *isa_bios_ptr; - - flash_size = memory_region_size(flash_mem); - - /* map the last 128KB of the BIOS in ISA space */ - isa_bios_size = MIN(flash_size, 128 * 1024); - isa_bios = g_malloc(sizeof(*isa_bios)); - memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size, - &error_fatal); - vmstate_register_ram_global(isa_bios); - memory_region_add_subregion_overlap(rom_memory, - 0x100000 - isa_bios_size, - isa_bios, - 1); - - /* copy ISA rom image from top of flash memory */ - flash_ptr = memory_region_get_ram_ptr(flash_mem); - isa_bios_ptr = memory_region_get_ram_ptr(isa_bios); - memcpy(isa_bios_ptr, - ((uint8_t*)flash_ptr) + (flash_size - isa_bios_size), - isa_bios_size); - - memory_region_set_readonly(isa_bios, true); -} - -#define FLASH_MAP_UNIT_MAX 2 - -/* We don't have a theoretically justifiable exact lower bound on the base - * address of any flash mapping. In practice, the IO-APIC MMIO range is - * [0xFEE00000..0xFEE01000[ -- see IO_APIC_DEFAULT_ADDRESS --, leaving free - * only 18MB-4KB below 4G. For now, restrict the cumulative mapping to 8MB in - * size. - */ -#define FLASH_MAP_BASE_MIN ((hwaddr)(0x100000000ULL - 8*1024*1024)) - -/* This function maps flash drives from 4G downward, in order of their unit - * numbers. The mapping starts at unit#0, with unit number increments of 1, and - * stops before the first missing flash drive, or before - * unit#FLASH_MAP_UNIT_MAX, whichever is reached first. - * - * Addressing within one flash drive is of course not reversed. - * - * An error message is printed and the process exits if: - * - the size of the backing file for a flash drive is non-positive, or not a - * multiple of the required sector size, or - * - the current mapping's base address would fall below FLASH_MAP_BASE_MIN. - * - * The drive with unit#0 (if available) is mapped at the highest address, and - * it is passed to pc_isa_bios_init(). Merging several drives for isa-bios is - * not supported. - */ -static void pc_system_flash_init(MemoryRegion *rom_memory) -{ - int unit; - DriveInfo *pflash_drv; - BlockBackend *blk; - int64_t size; - char *fatal_errmsg = NULL; - hwaddr phys_addr = 0x100000000ULL; - int sector_bits, sector_size; - pflash_t *system_flash; - MemoryRegion *flash_mem; - char name[64]; - - sector_bits = 12; - sector_size = 1 << sector_bits; - - for (unit = 0; - (unit < FLASH_MAP_UNIT_MAX && - (pflash_drv = drive_get(IF_PFLASH, 0, unit)) != NULL); - ++unit) { - blk = blk_by_legacy_dinfo(pflash_drv); - size = blk_getlength(blk); - if (size < 0) { - fatal_errmsg = g_strdup_printf("failed to get backing file size"); - } else if (size == 0) { - fatal_errmsg = g_strdup_printf("PC system firmware (pflash) " - "cannot have zero size"); - } else if ((size % sector_size) != 0) { - fatal_errmsg = g_strdup_printf("PC system firmware (pflash) " - "must be a multiple of 0x%x", sector_size); - } else if (phys_addr < size || phys_addr - size < FLASH_MAP_BASE_MIN) { - fatal_errmsg = g_strdup_printf("oversized backing file, pflash " - "segments cannot be mapped under " - TARGET_FMT_plx, FLASH_MAP_BASE_MIN); - } - if (fatal_errmsg != NULL) { - Location loc; - - /* push a new, "none" location on the location stack; overwrite its - * contents with the location saved in the option; print the error - * (includes location); pop the top - */ - loc_push_none(&loc); - if (pflash_drv->opts != NULL) { - qemu_opts_loc_restore(pflash_drv->opts); - } - error_report("%s", fatal_errmsg); - loc_pop(&loc); - g_free(fatal_errmsg); - exit(1); - } - - phys_addr -= size; - - /* pflash_cfi01_register() creates a deep copy of the name */ - snprintf(name, sizeof name, "system.flash%d", unit); - system_flash = pflash_cfi01_register(phys_addr, NULL /* qdev */, name, - size, blk, sector_size, - size >> sector_bits, - 1 /* width */, - 0x0000 /* id0 */, - 0x0000 /* id1 */, - 0x0000 /* id2 */, - 0x0000 /* id3 */, - 0 /* be */); - if (unit == 0) { - flash_mem = pflash_cfi01_get_memory(system_flash); - pc_isa_bios_init(rom_memory, flash_mem, size); - } - } -} - -static void old_pc_system_rom_init(MemoryRegion *rom_memory, bool isapc_ram_fw) -{ - char *filename; - MemoryRegion *bios, *isa_bios; - int bios_size, isa_bios_size; - int ret; - - /* BIOS load */ - if (bios_name == NULL) { - bios_name = BIOS_FILENAME; - } - filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); - if (filename) { - bios_size = get_image_size(filename); - } else { - bios_size = -1; - } - if (bios_size <= 0 || - (bios_size % 65536) != 0) { - goto bios_error; - } - bios = g_malloc(sizeof(*bios)); - memory_region_init_ram(bios, NULL, "pc.bios", bios_size, &error_fatal); - vmstate_register_ram_global(bios); - if (!isapc_ram_fw) { - memory_region_set_readonly(bios, true); - } - ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); - if (ret != 0) { - bios_error: - fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name); - exit(1); - } - g_free(filename); - - /* map the last 128KB of the BIOS in ISA space */ - isa_bios_size = bios_size; - if (isa_bios_size > (128 * 1024)) { - isa_bios_size = 128 * 1024; - } - isa_bios = g_malloc(sizeof(*isa_bios)); - memory_region_init_alias(isa_bios, NULL, "isa-bios", bios, - bios_size - isa_bios_size, isa_bios_size); - memory_region_add_subregion_overlap(rom_memory, - 0x100000 - isa_bios_size, - isa_bios, - 1); - if (!isapc_ram_fw) { - memory_region_set_readonly(isa_bios, true); - } - - /* map all the bios at the top of memory */ - memory_region_add_subregion(rom_memory, - (uint32_t)(-bios_size), - bios); -} - -void pc_system_firmware_init(MemoryRegion *rom_memory, bool isapc_ram_fw) -{ - DriveInfo *pflash_drv; - - pflash_drv = drive_get(IF_PFLASH, 0, 0); - - if (isapc_ram_fw || pflash_drv == NULL) { - /* When a pflash drive is not found, use rom-mode */ - old_pc_system_rom_init(rom_memory, isapc_ram_fw); - return; - } - - if (kvm_enabled() && !kvm_readonly_mem_enabled()) { - /* Older KVM cannot execute from device memory. So, flash memory - * cannot be used unless the readonly memory kvm capability is present. */ - fprintf(stderr, "qemu: pflash with kvm requires KVM readonly memory support\n"); - exit(1); - } - - pc_system_flash_init(rom_memory); -} |