mirror of
https://github.com/xen-project/xen.git
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Igor Druzhinin
149c6bbbf7
We need to choose ACPI tables and ACPI IO port location properly depending on the device model version we are running. Previously, this decision was made by BIOS type specific code in hvmloader, e.g. always load QEMU traditional specific tables if it's ROMBIOS and always load QEMU Xen specific tables if it's SeaBIOS. This change saves this behavior (for compatibility) but adds an additional way (xenstore key) to specify the correct device model if we happen to run a non-default one. Toolstack bit makes use of it. The enforcement of BIOS type depending on QEMU version will be lifted later when the rest of ROMBIOS compatibility fixes are in place. Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com> Reviewed-by: Paul Durrant <paul.durrant@citrix.com> Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com>
242 lines
6.7 KiB
C
242 lines
6.7 KiB
C
/*
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* HVM ROMBIOS support.
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*
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* Leendert van Doorn, leendert@watson.ibm.com
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* Copyright (c) 2005, International Business Machines Corporation.
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* Copyright (c) 2006, Keir Fraser, XenSource Inc.
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* Copyright (c) 2011, Citrix Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "../rombios/config.h"
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#include "smbios_types.h"
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#include "pci_regs.h"
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#include "util.h"
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#include "hypercall.h"
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#include "option_rom.h"
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#include <libacpi.h>
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#include <xen/hvm/params.h>
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#define ROM_INCLUDE_ROMBIOS
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#define ROM_INCLUDE_VGABIOS
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#define ROM_INCLUDE_ETHERBOOT
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#include "roms.inc"
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#define ROMBIOS_BEGIN 0x000F0000
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#define ROMBIOS_SIZE 0x00010000
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#define ROMBIOS_MAXOFFSET 0x0000FFFF
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#define ROMBIOS_END (ROMBIOS_BEGIN + ROMBIOS_SIZE)
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static void rombios_setup_e820(void)
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{
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/*
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* 0x9E000-0x09F000: Stack.
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* 0x9FC00-0x0A0000: Extended BIOS Data Area (EBDA).
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* ...
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* 0xE0000-0x0F0000: PC-specific area. We place various tables here.
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* 0xF0000-0x100000: System BIOS.
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*/
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*E820_NR = build_e820_table(E820, 0x9E000, 0xE0000);
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dump_e820_table(E820, *E820_NR);
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}
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static void rombios_setup_bios_info(void)
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{
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struct rombios_info *info;
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info = (struct rombios_info *)BIOS_INFO_PHYSICAL_ADDRESS;
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memset(info, 0, sizeof(*info));
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}
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static void rombios_load_roms(void)
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{
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int option_rom_sz = 0, vgabios_sz = 0, etherboot_sz = 0;
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uint32_t etherboot_phys_addr = 0, option_rom_phys_addr = 0;
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switch ( virtual_vga )
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{
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case VGA_cirrus:
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printf("Loading Cirrus VGABIOS ...\n");
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memcpy((void *)VGABIOS_PHYSICAL_ADDRESS,
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vgabios_cirrusvga, sizeof(vgabios_cirrusvga));
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vgabios_sz = round_option_rom(sizeof(vgabios_cirrusvga));
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break;
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case VGA_std:
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printf("Loading Standard VGABIOS ...\n");
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memcpy((void *)VGABIOS_PHYSICAL_ADDRESS,
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vgabios_stdvga, sizeof(vgabios_stdvga));
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vgabios_sz = round_option_rom(sizeof(vgabios_stdvga));
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break;
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case VGA_pt:
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printf("Loading VGABIOS of passthroughed gfx ...\n");
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vgabios_sz = round_option_rom(
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(*(uint8_t *)(VGABIOS_PHYSICAL_ADDRESS+2)) * 512);
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break;
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default:
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printf("No emulated VGA adaptor ...\n");
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break;
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}
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etherboot_phys_addr = VGABIOS_PHYSICAL_ADDRESS + vgabios_sz;
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if ( etherboot_phys_addr < OPTIONROM_PHYSICAL_ADDRESS )
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etherboot_phys_addr = OPTIONROM_PHYSICAL_ADDRESS;
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etherboot_sz = scan_etherboot_nic(OPTIONROM_PHYSICAL_END,
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etherboot_phys_addr,
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etherboot);
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option_rom_phys_addr = etherboot_phys_addr + etherboot_sz;
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option_rom_sz = pci_load_option_roms(OPTIONROM_PHYSICAL_END,
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option_rom_phys_addr);
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printf("Option ROMs:\n");
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if ( vgabios_sz )
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printf(" %05x-%05x: VGA BIOS\n",
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VGABIOS_PHYSICAL_ADDRESS,
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VGABIOS_PHYSICAL_ADDRESS + vgabios_sz - 1);
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if ( etherboot_sz )
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printf(" %05x-%05x: Etherboot ROM\n",
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etherboot_phys_addr,
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etherboot_phys_addr + etherboot_sz - 1);
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if ( option_rom_sz )
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printf(" %05x-%05x: PCI Option ROMs\n",
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option_rom_phys_addr,
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option_rom_phys_addr + option_rom_sz - 1);
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}
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static void rombios_load(const struct bios_config *config,
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void *unused_addr, uint32_t unused_size)
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{
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uint32_t bioshigh;
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struct rombios_info *info;
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BUILD_BUG_ON(sizeof(rombios) > 0x100000 - ROMBIOS_PHYSICAL_ADDRESS);
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memcpy((void *)config->bios_address, config->image,
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config->image_size);
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bioshigh = rombios_highbios_setup();
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info = (struct rombios_info *)BIOS_INFO_PHYSICAL_ADDRESS;
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info->bios32_entry = bioshigh;
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}
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/*
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* find_mp_table_start - searchs through BIOS memory for '___HVMMP' signature
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*
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* The '___HVMMP' signature is created by the ROMBIOS and designates a chunk
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* of space inside the ROMBIOS that is safe for us to write our MP table info
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*/
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static void *get_mp_table_start(void)
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{
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char *bios_mem;
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for ( bios_mem = (char *)ROMBIOS_BEGIN;
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bios_mem != (char *)ROMBIOS_END;
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bios_mem++ )
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{
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if ( strncmp(bios_mem, "___HVMMP", 8) == 0 )
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return bios_mem;
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}
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return NULL;
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}
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/* recalculate the new ROMBIOS checksum after adding MP tables */
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static void reset_bios_checksum(void)
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{
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uint32_t i;
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uint8_t checksum;
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checksum = 0;
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for ( i = 0; i < ROMBIOS_MAXOFFSET; i++ )
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checksum += ((uint8_t *)(ROMBIOS_BEGIN))[i];
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*((uint8_t *)(ROMBIOS_BEGIN + ROMBIOS_MAXOFFSET)) = -checksum;
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}
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static void rombios_acpi_build_tables(void)
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{
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struct acpi_config config = {
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.dsdt_anycpu = dsdt_anycpu,
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.dsdt_anycpu_len = dsdt_anycpu_len,
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.dsdt_15cpu = dsdt_15cpu,
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.dsdt_15cpu_len = dsdt_15cpu_len,
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};
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hvm_param_set(HVM_PARAM_ACPI_IOPORTS_LOCATION, 0);
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hvmloader_acpi_build_tables(&config, ACPI_PHYSICAL_ADDRESS);
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}
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static void rombios_create_mp_tables(void)
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{
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/* Find the 'safe' place in ROMBIOS for the MP tables. */
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void *table = get_mp_table_start();
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if ( table == NULL )
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{
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printf("Couldn't find start point for MP tables\n");
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return;
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}
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create_mp_tables(table);
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reset_bios_checksum();
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}
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static void rombios_create_smbios_tables(void)
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{
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hvm_write_smbios_tables(
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SMBIOS_PHYSICAL_ADDRESS,
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SMBIOS_PHYSICAL_ADDRESS + sizeof(struct smbios_entry_point),
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SMBIOS_PHYSICAL_END);
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}
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struct bios_config rombios_config = {
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.name = "ROMBIOS",
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.image = rombios,
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.image_size = sizeof(rombios),
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.bios_address = ROMBIOS_PHYSICAL_ADDRESS,
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.load_roms = rombios_load_roms,
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.bios_load = rombios_load,
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.bios_info_setup = rombios_setup_bios_info,
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.bios_info_finish = NULL,
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.e820_setup = rombios_setup_e820,
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.acpi_build_tables = rombios_acpi_build_tables,
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.create_mp_tables = rombios_create_mp_tables,
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.create_smbios_tables = rombios_create_smbios_tables,
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.create_pir_tables = NULL, /* embedded in ROMBIOS */
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};
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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