UEFITool/common/ksy/intel_acbp_v2.ksy

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meta:
id: intel_acbp_v2
title: Intel BootGuard Boot Policy v2
application: Intel x86 firmware
file-extension: acbp_v2
tags:
- firmware
license: CC0-1.0
ks-version: 0.9
endian: le
enums:
ibb_segment_type:
0: ibb
1: non_ibb
structure_ids:
0x5f5f504243415f5f: acbp
0x5f5f534242495f5f: ibbs
0x5f5f535458545f5f: txts
0x5f5f535246505f5f: pfrs
0x5f5f534443505f5f: pcds
0x5f5f41444d505f5f: pmda
0x5f5f47534d505f5f: pmsg
seq:
- id: structure_id
type: u8
enum: structure_ids
valid: structure_ids::acbp
- id: version
type: u1
valid:
expr: _ >= 0x20
- id: header_specific
type: u1
- id: total_size
type: u2
valid: 0x14
- id: key_signature_offset
type: u2
- id: bpm_revision
type: u1
- id: bp_svn
type: u1
- id: acm_svn
type: u1
- id: reserved
type: u1
- id: nem_data_size
type: u2
- id: elements
type: acbp_element
repeat: until
repeat-until: _.header.total_size == 0 or _.header.structure_id == structure_ids::pmsg
- id: key_signature
type: key_signature
types:
header:
seq:
- id: structure_id
type: u8
enum: structure_ids
- id: version
type: u1
- id: header_specific
type: u1
- id: total_size
type: u2
hash:
seq:
- id: hash_algorithm_id
type: u2
- id: len_hash
type: u2
- id: hash
size: len_hash
pmda_entry_v3:
seq:
- id: entry_id
type: u4
- id: base
type: u4
- id: size
type: u4
- id: total_entry_size
type: u2
- id: version
type: u2
valid: 3
- id: hash
type: hash
pmda_body:
seq:
- id: reserved
type: u2
- id: total_size
type: u2
- id: version
type: u4
- id: num_entries
type: u4
- id: entries
type: pmda_entry_v3
repeat: expr
repeat-expr: num_entries
ibb_segment:
seq:
- id: reserved
type: u2
- id: flags
type: u2
- id: base
type: u4
- id: size
type: u4
ibbs_body:
seq:
- id: reserved0
type: u1
- id: set_number
type: u1
- id: reserved1
type: u1
- id: pbet_value
type: u1
- id: flags
type: u4
- id: mch_bar
type: u8
- id: vtd_bar
type: u8
- id: dma_protection_base0
type: u4
- id: dma_protection_limit0
type: u4
- id: dma_protection_base1
type: u8
- id: dma_protection_limit1
type: u8
- id: post_ibb_digest
type: hash
- id: ibb_entry_point
type: u4
- id: ibb_digests_size
type: u2
- id: num_ibb_digests
type: u2
- id: ibb_digests
type: hash
repeat: expr
repeat-expr: num_ibb_digests
- id: obb_digest
type: hash
- id: reserved2
type: u1
repeat: expr
repeat-expr: 3
- id: num_ibb_segments
type: u1
- id: ibb_segments
type: ibb_segment
repeat: expr
repeat-expr: num_ibb_segments
acbp_element:
seq:
- id: header
type: header
- id: ibbs_body
type: ibbs_body
if: header.structure_id == structure_ids::ibbs
and header.total_size >= sizeof<header>
- id: pmda_body
type: pmda_body
if: header.structure_id == structure_ids::pmda
and header.total_size >= sizeof<header>
- id: generic_body
size: header.total_size - sizeof<header>
if: header.structure_id != structure_ids::ibbs
and header.structure_id != structure_ids::pmda
and header.total_size >= sizeof<header>
public_key:
seq:
- id: version
type: u1
- id: size_bits
type: u2
- id: exponent
type: u4
- id: modulus
size: size_bits / 8
signature:
seq:
- id: version
type: u1
- id: size_bits
type: u2
- id: hash_algorithm_id
type: u2
- id: signature
size: size_bits / 8
key_signature:
seq:
- id: version
type: u1
- id: key_id
type: u2
- id: public_key
type: public_key
- id: sig_scheme
type: u2
- id: signature
type: signature