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Fix ACPI table identification with proper null byte padding

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This commit is contained in:
Hoang Hong Quan
2025-05-06 13:53:38 +07:00
parent efb6a64e5b
commit 9b00aedcf8
1 changed files with 17 additions and 6 deletions
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Scripts/acpi_guru.py
+17 -6
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@@ -13,6 +13,8 @@ import binascii
import re import re
import tempfile import tempfile
import shutil import shutil
import sys
import plistlib
class ACPIGuru: class ACPIGuru:
def __init__(self): def __init__(self):
@@ -1444,6 +1446,14 @@ DefinitionBlock ("", "SSDT", 2, "ZPSS", "EC", 0x00001000)
"Patch": patches "Patch": patches
} }
def get_data(self, data, pad_to=0):
if sys.version_info >= (3, 0):
if not isinstance(data,bytes):
data = data.encode()
return data+b"\x00"*(max(pad_to-len(data),0))
else:
return plistlib.Data(data+b"\x00"*(max(pad_to-len(data),0)))
def write_ssdt(self, ssdt_name, ssdt_content, compile=True): def write_ssdt(self, ssdt_name, ssdt_content, compile=True):
dsl_path = os.path.join(self.acpi_directory, ssdt_name + ".dsl") dsl_path = os.path.join(self.acpi_directory, ssdt_name + ".dsl")
aml_path = os.path.join(self.acpi_directory, ssdt_name + ".aml") aml_path = os.path.join(self.acpi_directory, ssdt_name + ".aml")
@@ -3012,7 +3022,7 @@ DefinitionBlock ("", "SSDT", 2, "ZPSS", "SURFACE", 0x00001000)
return { return {
"All": True, "All": True,
"Comment": "Delete {}".format(signature or oemtableid), "Comment": "Delete {}".format((signature or oemtableid).rstrip(b"\x00").decode()),
"Enabled": True, "Enabled": True,
"OemTableId": self.utils.hex_to_bytes(binascii.hexlify(table_data.get("id")).decode()), "OemTableId": self.utils.hex_to_bytes(binascii.hexlify(table_data.get("id")).decode()),
"TableLength": table_data.get("length"), "TableLength": table_data.get("length"),
@@ -3188,13 +3198,14 @@ DefinitionBlock ("", "SSDT", 2, "ZPSS", "WMIS", 0x00000000)
} }
def drop_cpu_tables(self): def drop_cpu_tables(self):
cpu_tables = ["CpuPm", "Cpu0Ist"]
deletes = [] deletes = []
if self.dropping_the_table(oemtableid="CpuPm"): for table_name in cpu_tables:
deletes.append(self.dropping_the_table(oemtableid="CpuPm")) padded_table_id = self.get_data(table_name, pad_to=8)
table_entry = self.dropping_the_table(oemtableid=padded_table_id)
if self.dropping_the_table(oemtableid="Cpu0Ist"): if table_entry:
deletes.append(self.dropping_the_table(oemtableid="Cpu0Ist")) deletes.append(table_entry)
return { return {
"Delete": deletes "Delete": deletes