mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
BrentHoltsclaw
0165a61fec
* Add Win Cert types to uefi_fv and spi_uefi * Move uefi search to library.uefi folder * Move uefi_fv to library.uefi * Move uefi_compression to library.uefi> * Move uefi_common to library.uefi * Move uefi_platform to library.uefi * Move spi_uefi to library.uefi * Add library.uefi.sleep_scripts file * Move S3 functionality into sleep_state file * Add varstore and variable files to library.uefi * Fixup Flake8 suggestions * Rename library uefi files to remove uefi_ * This change changes the filename of any file under the library.uefi to remove the uefi as part of the name. * Fix Errors when testing changes Signed-off-by: brentholtsclaw <brent.holtsclaw@intel.com>
450 lines
19 KiB
Python
450 lines
19 KiB
Python
# CHIPSEC: Platform Security Assessment Framework
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# Copyright (c) 2010-2021, Intel Corporation
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; Version 2.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# Contact information:
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# chipsec@intel.com
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#
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"""
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Common UEFI/EFI functionality including UEFI variables, Firmware Volumes, Secure Boot variables, S3 boot-script, UEFI tables, etc.
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"""
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import struct
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from collections import namedtuple
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from typing import Dict, List, Any
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from uuid import UUID
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from chipsec.library.defines import bytestostring
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# from chipsec.helper.oshelper import helper
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################################################################################################
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#
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# Misc Defines
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#
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################################################################################################
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#
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# Status codes
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# edk2: MdePkg/Include/Base.h
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#
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# @TODO
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# define ENCODE_ERROR(StatusCode) ((RETURN_STATUS)(MAX_BIT | (StatusCode)))
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# define ENCODE_WARNING(a) (a)
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class StatusCode:
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EFI_SUCCESS = 0
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EFI_LOAD_ERROR = 1
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EFI_INVALID_PARAMETER = 2
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EFI_UNSUPPORTED = 3
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EFI_BAD_BUFFER_SIZE = 4
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EFI_BUFFER_TOO_SMALL = 5
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EFI_NOT_READY = 6
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EFI_DEVICE_ERROR = 7
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EFI_WRITE_PROTECTED = 8
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EFI_OUT_OF_RESOURCES = 9
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EFI_VOLUME_CORRUPTED = 10
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EFI_VOLUME_FULL = 11
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EFI_NO_MEDIA = 12
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EFI_MEDIA_CHANGED = 13
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EFI_NOT_FOUND = 14
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EFI_ACCESS_DENIED = 15
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EFI_NO_RESPONSE = 16
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EFI_NO_MAPPING = 17
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EFI_TIMEOUT = 18
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EFI_NOT_STARTED = 19
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EFI_ALREADY_STARTED = 20
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EFI_ABORTED = 21
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EFI_ICMP_ERROR = 22
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EFI_TFTP_ERROR = 23
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EFI_PROTOCOL_ERROR = 24
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EFI_INCOMPATIBLE_VERSION = 25
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EFI_SECURITY_VIOLATION = 26
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EFI_CRC_ERROR = 27
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EFI_END_OF_MEDIA = 28
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EFI_END_OF_FILE = 31
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EFI_INVALID_LANGUAGE = 32
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EFI_COMPROMISED_DATA = 33
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EFI_HTTP_ERROR = 35
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'''
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EFI_WARN_UNKNOWN_GLYPH = 1
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EFI_WARN_DELETE_FAILURE = 2
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EFI_WARN_WRITE_FAILURE = 3
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EFI_WARN_BUFFER_TOO_SMALL = 4
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EFI_WARN_STALE_DATA = 5
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EFI_WARN_FILE_SYSTEM = 6
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'''
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EFI_STATUS_DICT: Dict[int, str] = {
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StatusCode.EFI_SUCCESS: "EFI_SUCCESS",
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StatusCode.EFI_LOAD_ERROR: "EFI_LOAD_ERROR",
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StatusCode.EFI_INVALID_PARAMETER: "EFI_INVALID_PARAMETER",
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StatusCode.EFI_UNSUPPORTED: "EFI_UNSUPPORTED",
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StatusCode.EFI_BAD_BUFFER_SIZE: "EFI_BAD_BUFFER_SIZE",
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StatusCode.EFI_BUFFER_TOO_SMALL: "EFI_BUFFER_TOO_SMALL",
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StatusCode.EFI_NOT_READY: "EFI_NOT_READY",
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StatusCode.EFI_DEVICE_ERROR: "EFI_DEVICE_ERROR",
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StatusCode.EFI_WRITE_PROTECTED: "EFI_WRITE_PROTECTED",
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StatusCode.EFI_OUT_OF_RESOURCES: "EFI_OUT_OF_RESOURCES",
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StatusCode.EFI_VOLUME_CORRUPTED: "EFI_VOLUME_CORRUPTED",
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StatusCode.EFI_VOLUME_FULL: "EFI_VOLUME_FULL",
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StatusCode.EFI_NO_MEDIA: "EFI_NO_MEDIA",
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StatusCode.EFI_MEDIA_CHANGED: "EFI_MEDIA_CHANGED",
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StatusCode.EFI_NOT_FOUND: "EFI_NOT_FOUND",
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StatusCode.EFI_ACCESS_DENIED: "EFI_ACCESS_DENIED",
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StatusCode.EFI_NO_RESPONSE: "EFI_NO_RESPONSE",
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StatusCode.EFI_NO_MAPPING: "EFI_NO_MAPPING",
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StatusCode.EFI_TIMEOUT: "EFI_TIMEOUT",
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StatusCode.EFI_NOT_STARTED: "EFI_NOT_STARTED",
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StatusCode.EFI_ALREADY_STARTED: "EFI_ALREADY_STARTED",
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StatusCode.EFI_ABORTED: "EFI_ABORTED",
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StatusCode.EFI_ICMP_ERROR: "EFI_ICMP_ERROR",
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StatusCode.EFI_TFTP_ERROR: "EFI_TFTP_ERROR",
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StatusCode.EFI_PROTOCOL_ERROR: "EFI_PROTOCOL_ERROR",
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StatusCode.EFI_INCOMPATIBLE_VERSION: "EFI_INCOMPATIBLE_VERSION",
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StatusCode.EFI_SECURITY_VIOLATION: "EFI_SECURITY_VIOLATION",
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StatusCode.EFI_CRC_ERROR: "EFI_CRC_ERROR",
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StatusCode.EFI_END_OF_MEDIA: "EFI_END_OF_MEDIA",
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StatusCode.EFI_END_OF_FILE: "EFI_END_OF_FILE",
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StatusCode.EFI_INVALID_LANGUAGE: "EFI_INVALID_LANGUAGE",
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StatusCode.EFI_COMPROMISED_DATA: "EFI_COMPROMISED_DATA",
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StatusCode.EFI_HTTP_ERROR: "EFI_HTTP_ERROR"
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}
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EFI_MAX_BIT = 0x8000000000000000
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def EFI_ERROR_STR(error: int) -> str:
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"""
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Translates an EFI_STATUS value into its corresponding textual representation.
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"""
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error &= ~EFI_MAX_BIT
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try:
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return EFI_STATUS_DICT[error]
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except KeyError:
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return "UNKNOWN"
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EFI_GUID_FMT = "16s"
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EFI_GUID_SIZE = struct.calcsize(EFI_GUID_FMT)
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def EFI_GUID_STR(guid: bytes) -> str:
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guid_str = UUID(bytes_le=guid)
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return str(guid_str).upper()
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def align(of: int, size: int) -> int:
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of = (((of + size - 1) // size) * size)
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return of
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def bit_set(value: int, mask: int, polarity: bool = False) -> bool:
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if polarity:
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value = ~value
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return ((value & mask) == mask)
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def get_3b_size(s_data: bytes) -> int:
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s_str = bytestostring(s_data)
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return (ord(s_str[0]) + (ord(s_str[1]) << 8) + (ord(s_str[2]) << 16))
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# #################################################################################################
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#
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# UEFI Table Parsing Functionality
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#
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# #################################################################################################
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MAX_EFI_TABLE_SIZE = 0x1000
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# typedef struct {
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# UINT64 Signature;
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# UINT32 Revision;
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# UINT32 HeaderSize;
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# UINT32 CRC32;
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# UINT32 Reserved;
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# } EFI_TABLE_HEADER;
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EFI_TABLE_HEADER_FMT = '=8sIIII'
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EFI_TABLE_HEADER_SIZE = 0x18
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class EFI_TABLE_HEADER(namedtuple('EFI_TABLE_HEADER', 'Signature Revision HeaderSize CRC32 Reserved')):
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__slots__ = ()
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def __str__(self) -> str:
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return f"""Header:
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Signature : {bytestostring(self.Signature)}
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Revision : {EFI_SYSTEM_TABLE_REVISION(self.Revision)}
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HeaderSize : 0x{self.HeaderSize:08X}
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CRC32 : 0x{self.CRC32:08X}
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Reserved : 0x{self.Reserved:08X}"""
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# #################################################################################################
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# EFI System Table
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# #################################################################################################
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#
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# \MdePkg\Include\Uefi\UefiSpec.h
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EFI_SYSTEM_TABLE_SIGNATURE = 'IBI SYST'
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EFI_2_80_SYSTEM_TABLE_REVISION = ((2 << 16) | (80))
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EFI_2_70_SYSTEM_TABLE_REVISION = ((2 << 16) | (70))
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EFI_2_60_SYSTEM_TABLE_REVISION = ((2 << 16) | (60))
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EFI_2_50_SYSTEM_TABLE_REVISION = ((2 << 16) | (50))
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EFI_2_40_SYSTEM_TABLE_REVISION = ((2 << 16) | (40))
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EFI_2_31_SYSTEM_TABLE_REVISION = ((2 << 16) | (31))
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EFI_2_30_SYSTEM_TABLE_REVISION = ((2 << 16) | (30))
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EFI_2_20_SYSTEM_TABLE_REVISION = ((2 << 16) | (20))
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EFI_2_10_SYSTEM_TABLE_REVISION = ((2 << 16) | (10))
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EFI_2_00_SYSTEM_TABLE_REVISION = ((2 << 16) | (00))
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EFI_1_10_SYSTEM_TABLE_REVISION = ((1 << 16) | (10))
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EFI_1_02_SYSTEM_TABLE_REVISION = ((1 << 16) | (0o2))
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EFI_REVISIONS: List[int] = [
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EFI_2_80_SYSTEM_TABLE_REVISION,
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EFI_2_70_SYSTEM_TABLE_REVISION,
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EFI_2_60_SYSTEM_TABLE_REVISION,
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EFI_2_50_SYSTEM_TABLE_REVISION,
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EFI_2_40_SYSTEM_TABLE_REVISION,
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EFI_2_31_SYSTEM_TABLE_REVISION,
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EFI_2_30_SYSTEM_TABLE_REVISION,
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EFI_2_20_SYSTEM_TABLE_REVISION,
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EFI_2_10_SYSTEM_TABLE_REVISION,
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EFI_2_00_SYSTEM_TABLE_REVISION,
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EFI_1_10_SYSTEM_TABLE_REVISION,
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EFI_1_02_SYSTEM_TABLE_REVISION
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]
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def EFI_SYSTEM_TABLE_REVISION(revision: int) -> str:
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return f'{revision >> 16:d}.{revision & 0xFFFF:d}'
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EFI_SYSTEM_TABLE_FMT = '=12Q'
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class EFI_SYSTEM_TABLE(namedtuple('EFI_SYSTEM_TABLE', 'FirmwareVendor FirmwareRevision ConsoleInHandle ConIn ConsoleOutHandle ConOut StandardErrorHandle StdErr RuntimeServices BootServices NumberOfTableEntries ConfigurationTable')):
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__slots__ = ()
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def __str__(self) -> str:
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return f"""EFI System Table:
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FirmwareVendor : 0x{self.FirmwareVendor:016X}
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FirmwareRevision : 0x{self.FirmwareRevision:016X}
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ConsoleInHandle : 0x{self.ConsoleInHandle:016X}
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ConIn : 0x{self.ConIn:016X}
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ConsoleOutHandle : 0x{self.ConsoleOutHandle:016X}
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ConOut : 0x{self.ConOut:016X}
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StandardErrorHandle : 0x{self.StandardErrorHandle:016X}
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StdErr : 0x{self.StdErr:016X}
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RuntimeServices : 0x{self.RuntimeServices:016X}
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BootServices : 0x{self.BootServices:016X}
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NumberOfTableEntries: 0x{self.NumberOfTableEntries:016X}
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ConfigurationTable : 0x{self.ConfigurationTable:016X}
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"""
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# #################################################################################################
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# EFI Runtime Services Table
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# #################################################################################################
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#
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# \MdePkg\Include\Uefi\UefiSpec.h
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EFI_RUNTIME_SERVICES_SIGNATURE = 'RUNTSERV'
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EFI_RUNTIME_SERVICES_REVISION = EFI_2_31_SYSTEM_TABLE_REVISION
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EFI_RUNTIME_SERVICES_TABLE_FMT = '=14Q'
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class EFI_RUNTIME_SERVICES_TABLE(namedtuple('EFI_RUNTIME_SERVICES_TABLE', 'GetTime SetTime GetWakeupTime SetWakeupTime SetVirtualAddressMap ConvertPointer GetVariable GetNextVariableName SetVariable GetNextHighMonotonicCount ResetSystem UpdateCapsule QueryCapsuleCapabilities QueryVariableInfo')):
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__slots__ = ()
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def __str__(self) -> str:
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return f"""Runtime Services:
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GetTime : 0x{self.GetTime:016X}
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SetTime : 0x{self.SetTime:016X}
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GetWakeupTime : 0x{self.GetWakeupTime:016X}
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SetWakeupTime : 0x{self.SetWakeupTime:016X}
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SetVirtualAddressMap : 0x{self.SetVirtualAddressMap:016X}
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ConvertPointer : 0x{self.ConvertPointer:016X}
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GetVariable : 0x{self.GetVariable:016X}
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GetNextVariableName : 0x{self.GetNextVariableName:016X}
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SetVariable : 0x{self.SetVariable:016X}
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GetNextHighMonotonicCount: 0x{self.GetNextHighMonotonicCount:016X}
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ResetSystem : 0x{self.ResetSystem:016X}
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UpdateCapsule : 0x{self.UpdateCapsule:016X}
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QueryCapsuleCapabilities : 0x{self.QueryCapsuleCapabilities:016X}
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QueryVariableInfo : 0x{self.QueryVariableInfo:016X}
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"""
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# #################################################################################################
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# EFI Boot Services Table
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# #################################################################################################
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#
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# \MdePkg\Include\Uefi\UefiSpec.h
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EFI_BOOT_SERVICES_SIGNATURE = 'BOOTSERV'
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EFI_BOOT_SERVICES_REVISION = EFI_2_31_SYSTEM_TABLE_REVISION
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EFI_BOOT_SERVICES_TABLE_FMT = '=44Q'
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class EFI_BOOT_SERVICES_TABLE(namedtuple('EFI_BOOT_SERVICES_TABLE', 'RaiseTPL RestoreTPL AllocatePages FreePages GetMemoryMap AllocatePool FreePool CreateEvent SetTimer WaitForEvent SignalEvent CloseEvent CheckEvent InstallProtocolInterface ReinstallProtocolInterface UninstallProtocolInterface HandleProtocol Reserved RegisterProtocolNotify LocateHandle LocateDevicePath InstallConfigurationTable LoadImage StartImage Exit UnloadImage ExitBootServices GetNextMonotonicCount Stall SetWatchdogTimer ConnectController DisconnectController OpenProtocol CloseProtocol OpenProtocolInformation ProtocolsPerHandle LocateHandleBuffer LocateProtocol InstallMultipleProtocolInterfaces UninstallMultipleProtocolInterfaces CalculateCrc32 CopyMem SetMem CreateEventEx')):
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__slots__ = ()
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def __str__(self) -> str:
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return f"""Boot Services:
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RaiseTPL : 0x{self.RaiseTPL:016X}
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RestoreTPL : 0x{self.RestoreTPL:016X}
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AllocatePages : 0x{self.AllocatePages:016X}
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FreePages : 0x{self.FreePages:016X}
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GetMemoryMap : 0x{self.GetMemoryMap:016X}
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AllocatePool : 0x{self.AllocatePool:016X}
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FreePool : 0x{self.FreePool:016X}
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CreateEvent : 0x{self.CreateEvent:016X}
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SetTimer : 0x{self.SetTimer:016X}
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WaitForEvent : 0x{self.WaitForEvent:016X}
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SignalEvent : 0x{self.SignalEvent:016X}
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CloseEvent : 0x{self.CloseEvent:016X}
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CheckEvent : 0x{self.CheckEvent:016X}
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InstallProtocolInterface : 0x{self.InstallProtocolInterface:016X}
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ReinstallProtocolInterface : 0x{self.ReinstallProtocolInterface:016X}
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UninstallProtocolInterface : 0x{self.UninstallProtocolInterface:016X}
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HandleProtocol : 0x{self.HandleProtocol:016X}
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Reserved : 0x{self.Reserved:016X}
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RegisterProtocolNotify : 0x{self.RegisterProtocolNotify:016X}
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LocateHandle : 0x{self.LocateHandle:016X}
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LocateDevicePath : 0x{self.LocateDevicePath:016X}
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InstallConfigurationTable : 0x{self.InstallConfigurationTable:016X}
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LoadImage : 0x{self.LoadImage:016X}
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StartImage : 0x{self.StartImage:016X}
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Exit : 0x{self.Exit:016X}
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UnloadImage : 0x{self.UnloadImage:016X}
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ExitBootServices : 0x{self.ExitBootServices:016X}
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GetNextMonotonicCount : 0x{self.GetNextMonotonicCount:016X}
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Stall : 0x{self.Stall:016X}
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SetWatchdogTimer : 0x{self.SetWatchdogTimer:016X}
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ConnectController : 0x{self.ConnectController:016X}
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DisconnectController : 0x{self.DisconnectController:016X}
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OpenProtocol : 0x{self.OpenProtocol:016X}
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CloseProtocol : 0x{self.CloseProtocol:016X}
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OpenProtocolInformation : 0x{self.OpenProtocolInformation:016X}
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ProtocolsPerHandle : 0x{self.ProtocolsPerHandle:016X}
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LocateHandleBuffer : 0x{self.LocateHandleBuffer:016X}
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LocateProtocol : 0x{self.LocateProtocol:016X}
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InstallMultipleProtocolInterfaces : 0x{self.InstallMultipleProtocolInterfaces:016X}
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UninstallMultipleProtocolInterfaces: 0x{self.UninstallMultipleProtocolInterfaces:016X}
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CalculateCrc32 : 0x{self.CalculateCrc32:016X}
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CopyMem : 0x{self.CopyMem:016X}
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SetMem : 0x{self.SetMem:016X}
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CreateEventEx : 0x{self.CreateEventEx:016X}
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"""
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# #################################################################################################
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# EFI System Configuration Table
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# #################################################################################################
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#
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# \MdePkg\Include\Uefi\UefiSpec.h
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# -------------------------------
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EFI_VENDOR_TABLE_FORMAT = '<' + EFI_GUID_FMT + 'Q'
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EFI_VENDOR_TABLE_SIZE = struct.calcsize(EFI_VENDOR_TABLE_FORMAT)
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class EFI_VENDOR_TABLE(namedtuple('EFI_VENDOR_TABLE', 'VendorGuidData VendorTable')):
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__slots__ = ()
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def VendorGuid(self) -> str:
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return EFI_GUID_STR(self.VendorGuidData)
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class EFI_CONFIGURATION_TABLE:
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def __init__(self):
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self.VendorTables = {}
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def __str__(self) -> str:
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vendor_table_str = ''.join([f'{{{vt}}} : 0x{self.VendorTables[vt]:016X}\n' for vt in self.VendorTables])
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return f'Vendor Tables:\n{vendor_table_str}'
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# #################################################################################################
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# EFI DXE Services Table
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# #################################################################################################
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#
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# \MdePkg\Include\Pi\PiDxeCis.h
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# -----------------------------
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#
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EFI_DXE_SERVICES_TABLE_SIGNATURE = 'DXE_SERV' # 0x565245535f455844
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EFI_DXE_SERVICES_TABLE_FMT = '=17Q'
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class EFI_DXE_SERVICES_TABLE(namedtuple('EFI_DXE_SERVICES_TABLE', 'AddMemorySpace AllocateMemorySpace FreeMemorySpace RemoveMemorySpace GetMemorySpaceDescriptor SetMemorySpaceAttributes GetMemorySpaceMap AddIoSpace AllocateIoSpace FreeIoSpace RemoveIoSpace GetIoSpaceDescriptor GetIoSpaceMap Dispatch Schedule Trust ProcessFirmwareVolume')):
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__slots__ = ()
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def __str__(self) -> str:
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return f"""DXE Services:
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AddMemorySpace : 0x{self.AddMemorySpace:016X}
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AllocateMemorySpace : 0x{self.AllocateMemorySpace:016X}
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FreeMemorySpace : 0x{self.FreeMemorySpace:016X}
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RemoveMemorySpace : 0x{self.RemoveMemorySpace:016X}
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GetMemorySpaceDescriptor: 0x{self.GetMemorySpaceDescriptor:016X}
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SetMemorySpaceAttributes: 0x{self.SetMemorySpaceAttributes:016X}
|
|
GetMemorySpaceMap : 0x{self.GetMemorySpaceMap:016X}
|
|
AddIoSpace : 0x{self.AddIoSpace:016X}
|
|
AllocateIoSpace : 0x{self.AllocateIoSpace:016X}
|
|
FreeIoSpace : 0x{self.FreeIoSpace:016X}
|
|
RemoveIoSpace : 0x{self.RemoveIoSpace:016X}
|
|
GetIoSpaceDescriptor : 0x{self.GetIoSpaceDescriptor:016X}
|
|
GetIoSpaceMap : 0x{self.GetIoSpaceMap:016X}
|
|
Dispatch : 0x{self.Dispatch:016X}
|
|
Schedule : 0x{self.Schedule:016X}
|
|
Trust : 0x{self.Trust:016X}
|
|
ProcessFirmwareVolume : 0x{self.ProcessFirmwareVolume:016X}
|
|
"""
|
|
|
|
|
|
# #################################################################################################
|
|
# EFI PEI Services Table
|
|
# #################################################################################################
|
|
EFI_FRAMEWORK_PEI_SERVICES_TABLE_SIGNATURE = 0x5652455320494550
|
|
FRAMEWORK_PEI_SPECIFICATION_MAJOR_REVISION = 0
|
|
FRAMEWORK_PEI_SPECIFICATION_MINOR_REVISION = 91
|
|
FRAMEWORK_PEI_SERVICES_REVISION = ((FRAMEWORK_PEI_SPECIFICATION_MAJOR_REVISION << 16) | (FRAMEWORK_PEI_SPECIFICATION_MINOR_REVISION))
|
|
|
|
# #################################################################################################
|
|
# EFI System Management System Table
|
|
# #################################################################################################
|
|
|
|
EFI_SMM_SYSTEM_TABLE_SIGNATURE = 'SMST'
|
|
EFI_SMM_SYSTEM_TABLE_REVISION = (0 << 16) | (0x09)
|
|
|
|
|
|
EFI_TABLES: Dict[str, Dict[str, Any]] = {
|
|
EFI_SYSTEM_TABLE_SIGNATURE: {'name': 'EFI System Table', 'struct': EFI_SYSTEM_TABLE, 'fmt': EFI_SYSTEM_TABLE_FMT},
|
|
EFI_RUNTIME_SERVICES_SIGNATURE: {'name': 'EFI Runtime Services Table', 'struct': EFI_RUNTIME_SERVICES_TABLE, 'fmt': EFI_RUNTIME_SERVICES_TABLE_FMT},
|
|
EFI_BOOT_SERVICES_SIGNATURE: {'name': 'EFI Boot Services Table', 'struct': EFI_BOOT_SERVICES_TABLE, 'fmt': EFI_BOOT_SERVICES_TABLE_FMT},
|
|
EFI_DXE_SERVICES_TABLE_SIGNATURE: {'name': 'EFI DXE Services Table', 'struct': EFI_DXE_SERVICES_TABLE, 'fmt': EFI_DXE_SERVICES_TABLE_FMT}
|
|
# EFI_FRAMEWORK_PEI_SERVICES_TABLE_SIGNATURE : {'name' : 'EFI Framework PEI Services Table', 'struct' : EFI_FRAMEWORK_PEI_SERVICES_TABLE, 'fmt' : EFI_FRAMEWORK_PEI_SERVICES_TABLE_FMT },
|
|
# EFI_SMM_SYSTEM_TABLE_SIGNATURE : {'name' : 'EFI SMM System Table', 'struct' : EFI_SMM_SYSTEM_TABLE, 'fmt' : EFI_SMM_SYSTEM_TABLE_FMT },
|
|
# EFI_CONFIG_TABLE_SIGNATURE : {'name' : 'EFI Configuration Table', 'struct' : EFI_CONFIG_TABLE, 'fmt' : EFI_CONFIG_TABLE_FMT }
|
|
}
|