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- add uefi variable store support

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Merge tag 'firmware-20250304-pull-request' of https://gitlab.com/kraxel/qemu into staging

- add uefi variable store support

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# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* tag 'firmware-20250304-pull-request' of https://gitlab.com/kraxel/qemu: (24 commits)
  docs: add uefi variable service documentation
  hw/uefi: add MAINTAINERS entry
  hw/uefi-vars-sysbus: allow for pc and q35
  hw/uefi-vars-sysbus: allow for arm virt
  hw/uefi-vars-sysbus: add x64 variant
  hw/uefi-vars-sysbus: qemu platform bus support
  hw/uefi: add uefi-vars-sysbus device
  hw/uefi: add to meson
  hw/uefi: add UEFI_VARS to Kconfig
  hw/uefi: add trace-events
  hw/uefi: add var-service-json.c + qapi for NV vars.
  hw/uefi: add var-service-siglist.c
  hw/uefi: add var-service-pkcs7-stub.c
  hw/uefi: add var-service-pkcs7.c
  hw/uefi: add var-service-core.c
  hw/uefi: add var-service-policy.c
  hw/uefi: add var-service-auth.c
  hw/uefi: add var-service-vars.c
  hw/uefi: add var-service-utils.c
  hw/uefi: add var-service-guid.c
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2025-03-05 21:53:36 +08:00
commit 50aa3d0984
33 changed files with 3902 additions and 0 deletions
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1
qapi/meson.build
View file

@ -65,6 +65,7 @@ if have_system
'pci',
'rocker',
'tpm',
'uefi',
]
endif
if have_system or have_tools

1
qapi/qapi-schema.json
View file

@ -81,3 +81,4 @@
{ 'include': 'vfio.json' }
{ 'include': 'cryptodev.json' }
{ 'include': 'cxl.json' }
{ 'include': 'uefi.json' }

64
qapi/uefi.json Normal file
View file

@ -0,0 +1,64 @@
# -*- Mode: Python -*-
# vim: filetype=python
#
##
# = UEFI Variable Store
#
# The qemu efi variable store implementation (hw/uefi/) uses this to
# store non-volatile variables in json format on disk.
#
# This is an existing format already supported by (at least) two other
# projects, specifically https://gitlab.com/kraxel/virt-firmware and
# https://github.com/awslabs/python-uefivars.
##
##
# @UefiVariable:
#
# UEFI Variable. Check the UEFI specifification for more detailed
# information on the fields.
#
# @guid: variable namespace GUID
#
# @name: variable name, in UTF-8 encoding.
#
# @attr: variable attributes.
#
# @data: variable value, encoded as hex string.
#
# @time: variable modification time. EFI_TIME struct, encoded as hex
# string. Used only for authenticated variables, where the
# EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute bit
# is set.
#
# @digest: variable certificate digest. Used to verify the signature
# of updates for authenticated variables. UEFI has two kinds of
# authenticated variables. The secure boot variables ('PK',
# 'KEK', 'db' and 'dbx') have hard coded signature checking rules.
# For other authenticated variables the firmware stores a digest
# of the signing certificate at variable creation time, and any
# updates must be signed with the same certificate.
#
# Since: 10.0
##
{ 'struct' : 'UefiVariable',
'data' : { 'guid' : 'str',
'name' : 'str',
'attr' : 'int',
'data' : 'str',
'*time' : 'str',
'*digest' : 'str'}}
##
# @UefiVarStore:
#
# @version: currently always 2
#
# @variables: list of UEFI variables
#
# Since: 10.0
##
{ 'struct' : 'UefiVarStore',
'data' : { 'version' : 'int',
'variables' : [ 'UefiVariable' ] }}