2  * QEMU PC System Firmware
4  * Copyright (c) 2003-2004 Fabrice Bellard
5  * Copyright (c) 2011-2012 Intel Corporation
28 #include "system/block-backend.h"
29 #include "qemu/error-report.h"
34 #include "hw/i386/pc.h"
36 #include "hw/qdev-properties.h"
53     /* map the last 128KB of the BIOS in ISA space */  in pc_isa_bios_init()
56         memory_region_init_ram_guest_memfd(isa_bios, NULL, "isa-bios",  in pc_isa_bios_init()
59         memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size,  in pc_isa_bios_init()
63                                         0x100000 - isa_bios_size,  in pc_isa_bios_init()
71            ((uint8_t*)flash_ptr) + (flash_size - isa_bios_size),  in pc_isa_bios_init()
85     qdev_prop_set_uint64(dev, "sector-length", FLASH_SECTOR_SIZE);  in pc_pflash_create()
103     if (pcmc->pci_enabled) {  in pc_system_flash_create()
104         pcms->flash[0] = pc_pflash_create(pcms, "system.flash0",  in pc_system_flash_create()
106         pcms->flash[1] = pc_pflash_create(pcms, "system.flash1",  in pc_system_flash_create()
116     assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled);  in pc_system_flash_cleanup_unused()
118     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {  in pc_system_flash_cleanup_unused()
119         if (!qdev_is_realized(DEVICE(pcms->flash[i]))) {  in pc_system_flash_cleanup_unused()
123             object_unparent(OBJECT(pcms->flash[i]));  in pc_system_flash_cleanup_unused()
124             pcms->flash[i] = NULL;  in pc_system_flash_cleanup_unused()
130  * Map the pcms->flash[] from 4GiB downward, and realize.
131  * Map them in descending order, i.e. pcms->flash[0] at the top,
133  * Stop at the first pcms->flash[0] lacking a block backend.
135  * size isn't a non-zero multiple of 4KiB, or the total size exceeds
136  * pcms->max_fw_size.
138  * If pcms->flash[0] has a block backend, its memory is passed to
139  * pc_isa_bios_init().  Merging several flash devices for isa-bios is
156     assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled);  in pc_system_flash_map()
158     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {  in pc_system_flash_map()
161         system_flash = pcms->flash[i];  in pc_system_flash_map()
169                          blk_name(blk), strerror(-size));  in pc_system_flash_map()
176             info_report("its size must be a non-zero multiple of 0x%x",  in pc_system_flash_map()
181             || total_size > HWADDR_MAX - size  in pc_system_flash_map()
182             || total_size + size > pcms->max_fw_size) {  in pc_system_flash_map()
185                          pcms->max_fw_size);  in pc_system_flash_map()
190         gpa = 0x100000000ULL - total_size; /* where the flash is mapped */  in pc_system_flash_map()
191         qdev_prop_set_uint32(DEVICE(system_flash), "num-blocks",  in pc_system_flash_map()
198             if (pcmc->isa_bios_alias) {  in pc_system_flash_map()
199                 x86_isa_bios_init(&x86ms->isa_bios, rom_memory, flash_mem,  in pc_system_flash_map()
202                 pc_isa_bios_init(pcms, &x86ms->isa_bios, rom_memory, flash_mem);  in pc_system_flash_map()
220     BlockBackend *pflash_blk[ARRAY_SIZE(pcms->flash)];  in pc_system_firmware_init()
222     if (!pcmc->pci_enabled) {  in pc_system_firmware_init()
223         x86_bios_rom_init(X86_MACHINE(pcms), "bios.bin", rom_memory, true);  in pc_system_firmware_init()
227     /* Map legacy -drive if=pflash to machine properties */  in pc_system_firmware_init()
228     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {  in pc_system_firmware_init()
229         pflash_cfi01_legacy_drive(pcms->flash[i],  in pc_system_firmware_init()
231         pflash_blk[i] = pflash_cfi01_get_blk(pcms->flash[i]);  in pc_system_firmware_init()
235     for (i = 1; i < ARRAY_SIZE(pcms->flash); i++) {  in pc_system_firmware_init()
236         if (pflash_blk[i] && !pflash_blk[i - 1]) {  in pc_system_firmware_init()
237             error_report("pflash%d requires pflash%d", i, i - 1);  in pc_system_firmware_init()
244         x86_bios_rom_init(X86_MACHINE(pcms), "bios.bin", rom_memory, false);  in pc_system_firmware_init()