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Patches related to EDK2/OVMF

Browse source 
- MAINTAINERS: remove Laszlo Ersek's entries
 - Introduce X86_FW_OVMF Kconfig symbol
 - pc_system_ovmf_table_find: Assert that flash was parsed, document
 - gitlab-ci: Fix the jobs building EDK2 blobs
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Merge remote-tracking branch 'remotes/philmd/tags/fw-edk2-20210714' into staging

Patches related to EDK2/OVMF

- MAINTAINERS: remove Laszlo Ersek's entries
- Introduce X86_FW_OVMF Kconfig symbol
- pc_system_ovmf_table_find: Assert that flash was parsed, document
- gitlab-ci: Fix the jobs building EDK2 blobs

# gpg: Signature made Wed 14 Jul 2021 21:36:33 BST
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/fw-edk2-20210714:
  MAINTAINERS: remove Laszlo Ersek's entries
  hw/i386: Introduce X86_FW_OVMF Kconfig symbol
  hw/i386/pc: Document pc_system_ovmf_table_find
  hw/i386/pc: pc_system_ovmf_table_find: Assert that flash was parsed
  gitlab-ci: Extract EDK2 job rules to reusable section

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-07-15 13:44:00 +01:00
parent a9649a719a 2669350db2
commit f665574ac5
8 changed files with 201 additions and 121 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
.gitlab-ci.d/edk2.yml
View file

@ -1,10 +1,22 @@
docker-edk2:
stage: containers
rules: # Only run this job when the Dockerfile is modified
# All jobs needing docker-edk2 must use the same rules it uses.
.edk2_job_rules:
rules: # Only run this job when ...
- changes:
# this file is modified
- .gitlab-ci.d/edk2.yml
# or the Dockerfile is modified
- .gitlab-ci.d/edk2/Dockerfile
# or roms/edk2/ is modified (submodule updated)
- roms/edk2/*
when: always
- if: '$CI_COMMIT_REF_NAME =~ /^edk2/' # or the branch/tag starts with 'edk2'
when: always
- if: '$CI_COMMIT_MESSAGE =~ /edk2/i' # or last commit description contains 'EDK2'
when: always
docker-edk2:
extends: .edk2_job_rules
stage: containers
image: docker:19.03.1
services:
- docker:19.03.1-dind
@ -24,16 +36,9 @@ docker-edk2:
- docker push $IMAGE_TAG
build-edk2:
extends: .edk2_job_rules
stage: build
needs: ['docker-edk2']
rules: # Only run this job when ...
- changes: # ... roms/edk2/ is modified (submodule updated)
- roms/edk2/*
when: always
- if: '$CI_COMMIT_REF_NAME =~ /^edk2/' # or the branch/tag starts with 'edk2'
when: always
- if: '$CI_COMMIT_MESSAGE =~ /edk2/i' # or last commit description contains 'EDK2'
when: always
artifacts:
paths: # 'artifacts.zip' will contains the following files:
- pc-bios/edk2*bz2

4
MAINTAINERS
View file

@ -2202,7 +2202,6 @@ F: include/hw/southbridge/piix.h
Firmware configuration (fw_cfg)
M: Philippe Mathieu-Daudé <philmd@redhat.com>
R: Laszlo Ersek <lersek@redhat.com>
R: Gerd Hoffmann <kraxel@redhat.com>
S: Supported
F: docs/specs/fw_cfg.txt
@ -2934,7 +2933,6 @@ F: include/hw/i2c/smbus_slave.h
F: include/hw/i2c/smbus_eeprom.h
Firmware schema specifications
M: Laszlo Ersek <lersek@redhat.com>
M: Philippe Mathieu-Daudé <philmd@redhat.com>
R: Daniel P. Berrange <berrange@redhat.com>
R: Kashyap Chamarthy <kchamart@redhat.com>
@ -2942,9 +2940,9 @@ S: Maintained
F: docs/interop/firmware.json
EDK2 Firmware
M: Laszlo Ersek <lersek@redhat.com>
M: Philippe Mathieu-Daudé <philmd@redhat.com>
S: Supported
F: hw/i386/*ovmf*
F: pc-bios/descriptors/??-edk2-*.json
F: pc-bios/edk2-*
F: roms/Makefile.edk2

4
hw/i386/Kconfig
View file

@ -1,5 +1,9 @@
config X86_FW_OVMF
bool
config SEV
bool
select X86_FW_OVMF
depends on KVM
config PC

2
hw/i386/meson.build
View file

@ -24,6 +24,8 @@ i386_ss.add(when: 'CONFIG_PC', if_true: files(
'pc_sysfw.c',
'acpi-build.c',
'port92.c'))
i386_ss.add(when: 'CONFIG_X86_FW_OVMF', if_true: files('pc_sysfw_ovmf.c'),
if_false: files('pc_sysfw_ovmf-stubs.c'))
subdir('kvm')
subdir('xen')

107
hw/i386/pc_sysfw.c
View file

@ -124,113 +124,6 @@ void pc_system_flash_cleanup_unused(PCMachineState *pcms)
}
}
#define OVMF_TABLE_FOOTER_GUID "96b582de-1fb2-45f7-baea-a366c55a082d"
static uint8_t *ovmf_table;
static int ovmf_table_len;
static void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size)
{
uint8_t *ptr;
QemuUUID guid;
int tot_len;
/* should only be called once */
if (ovmf_table) {
return;
}
if (flash_size < TARGET_PAGE_SIZE) {
return;
}
/*
* if this is OVMF there will be a table footer
* guid 48 bytes before the end of the flash file. If it's
* not found, silently abort the flash parsing.
*/
qemu_uuid_parse(OVMF_TABLE_FOOTER_GUID, &guid);
guid = qemu_uuid_bswap(guid); /* guids are LE */
ptr = flash_ptr + flash_size - 48;
if (!qemu_uuid_is_equal((QemuUUID *)ptr, &guid)) {
return;
}
/* if found, just before is two byte table length */
ptr -= sizeof(uint16_t);
tot_len = le16_to_cpu(*(uint16_t *)ptr) - sizeof(guid) - sizeof(uint16_t);
if (tot_len <= 0) {
return;
}
ovmf_table = g_malloc(tot_len);
ovmf_table_len = tot_len;
/*
* ptr is the foot of the table, so copy it all to the newly
* allocated ovmf_table and then set the ovmf_table pointer
* to the table foot
*/
memcpy(ovmf_table, ptr - tot_len, tot_len);
ovmf_table += tot_len;
}
bool pc_system_ovmf_table_find(const char *entry, uint8_t **data,
int *data_len)
{
uint8_t *ptr = ovmf_table;
int tot_len = ovmf_table_len;
QemuUUID entry_guid;
if (qemu_uuid_parse(entry, &entry_guid) < 0) {
return false;
}
if (!ptr) {
return false;
}
entry_guid = qemu_uuid_bswap(entry_guid); /* guids are LE */
while (tot_len >= sizeof(QemuUUID) + sizeof(uint16_t)) {
int len;
QemuUUID *guid;
/*
* The data structure is
* arbitrary length data
* 2 byte length of entire entry
* 16 byte guid
*/
guid = (QemuUUID *)(ptr - sizeof(QemuUUID));
len = le16_to_cpu(*(uint16_t *)(ptr - sizeof(QemuUUID) -
sizeof(uint16_t)));
/*
* just in case the table is corrupt, wouldn't want to spin in
* the zero case
*/
if (len < sizeof(QemuUUID) + sizeof(uint16_t)) {
return false;
} else if (len > tot_len) {
return false;
}
ptr -= len;
tot_len -= len;
if (qemu_uuid_is_equal(guid, &entry_guid)) {
if (data) {
*data = ptr;
}
if (data_len) {
*data_len = len - sizeof(QemuUUID) - sizeof(uint16_t);
}
return true;
}
}
return false;
}
/*
* Map the pcms->flash[] from 4GiB downward, and realize.
* Map them in descending order, i.e. pcms->flash[0] at the top,

26
hw/i386/pc_sysfw_ovmf-stubs.c Normal file
View file

@ -0,0 +1,26 @@
/*
* QEMU PC System Firmware (OVMF stubs)
*
* Copyright (c) 2021 Red Hat, Inc.
*
* Author:
* Philippe Mathieu-Daudé <philmd@redhat.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "hw/i386/pc.h"
bool pc_system_ovmf_table_find(const char *entry, uint8_t **data, int *data_len)
{
g_assert_not_reached();
}
void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size)
{
g_assert_not_reached();
}

151
hw/i386/pc_sysfw_ovmf.c Normal file
View file

@ -0,0 +1,151 @@
/*
* QEMU PC System Firmware (OVMF specific)
*
* 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 "hw/i386/pc.h"
#include "cpu.h"
#define OVMF_TABLE_FOOTER_GUID "96b582de-1fb2-45f7-baea-a366c55a082d"
static bool ovmf_flash_parsed;
static uint8_t *ovmf_table;
static int ovmf_table_len;
void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size)
{
uint8_t *ptr;
QemuUUID guid;
int tot_len;
/* should only be called once */
if (ovmf_flash_parsed) {
return;
}
ovmf_flash_parsed = true;
if (flash_size < TARGET_PAGE_SIZE) {
return;
}
/*
* if this is OVMF there will be a table footer
* guid 48 bytes before the end of the flash file. If it's
* not found, silently abort the flash parsing.
*/
qemu_uuid_parse(OVMF_TABLE_FOOTER_GUID, &guid);
guid = qemu_uuid_bswap(guid); /* guids are LE */
ptr = flash_ptr + flash_size - 48;
if (!qemu_uuid_is_equal((QemuUUID *)ptr, &guid)) {
return;
}
/* if found, just before is two byte table length */
ptr -= sizeof(uint16_t);
tot_len = le16_to_cpu(*(uint16_t *)ptr) - sizeof(guid) - sizeof(uint16_t);
if (tot_len <= 0) {
return;
}
ovmf_table = g_malloc(tot_len);
ovmf_table_len = tot_len;
/*
* ptr is the foot of the table, so copy it all to the newly
* allocated ovmf_table and then set the ovmf_table pointer
* to the table foot
*/
memcpy(ovmf_table, ptr - tot_len, tot_len);
ovmf_table += tot_len;
}
/**
* pc_system_ovmf_table_find - Find the data associated with an entry in OVMF's
* reset vector GUIDed table.
*
* @entry: GUID string of the entry to lookup
* @data: Filled with a pointer to the entry's value (if not NULL)
* @data_len: Filled with the length of the entry's value (if not NULL). Pass
* NULL here if the length of data is known.
*
* Return: true if the entry was found in the OVMF table; false otherwise.
*/
bool pc_system_ovmf_table_find(const char *entry, uint8_t **data,
int *data_len)
{
uint8_t *ptr = ovmf_table;
int tot_len = ovmf_table_len;
QemuUUID entry_guid;
assert(ovmf_flash_parsed);
if (qemu_uuid_parse(entry, &entry_guid) < 0) {
return false;
}
if (!ptr) {
return false;
}
entry_guid = qemu_uuid_bswap(entry_guid); /* guids are LE */
while (tot_len >= sizeof(QemuUUID) + sizeof(uint16_t)) {
int len;
QemuUUID *guid;
/*
* The data structure is
* arbitrary length data
* 2 byte length of entire entry
* 16 byte guid
*/
guid = (QemuUUID *)(ptr - sizeof(QemuUUID));
len = le16_to_cpu(*(uint16_t *)(ptr - sizeof(QemuUUID) -
sizeof(uint16_t)));
/*
* just in case the table is corrupt, wouldn't want to spin in
* the zero case
*/
if (len < sizeof(QemuUUID) + sizeof(uint16_t)) {
return false;
} else if (len > tot_len) {
return false;
}
ptr -= len;
tot_len -= len;
if (qemu_uuid_is_equal(guid, &entry_guid)) {
if (data) {
*data = ptr;
}
if (data_len) {
*data_len = len - sizeof(QemuUUID) - sizeof(uint16_t);
}
return true;
}
}
return false;
}

1
include/hw/i386/pc.h
View file

@ -188,6 +188,7 @@ void pc_system_flash_cleanup_unused(PCMachineState *pcms);
void pc_system_firmware_init(PCMachineState *pcms, MemoryRegion *rom_memory);
bool pc_system_ovmf_table_find(const char *entry, uint8_t **data,
int *data_len);
void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size);
/* acpi-build.c */