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Update aspm.py

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z8
2024-02-10 21:57:49 +01:00
parent 4ede0f9eb0
commit 3e9e2ccbb0
1 changed files with 17 additions and 10 deletions
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aspm.py
+17 -10
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@@ -2,10 +2,10 @@ import subprocess
from enum import Enum from enum import Enum
class ASPM(Enum): class ASPM(Enum):
ASPM_DISABLED = 0x40 ASPM_DISABLED = 0b00
ASPM_L0s_ONLY = 0x41 ASPM_L0s_ONLY = 0b01
ASPM_L1_ONLY = 0x42 ASPM_L1_ONLY = 0b10
ASPM_L1_AND_L0s = 0x43 ASPM_L1_AND_L0s = 0b11
root_complex = "00:1c.4" root_complex = "00:1c.4"
endpoint = "05:00.0" endpoint = "05:00.0"
@@ -68,15 +68,22 @@ def patch_device(addr):
endpoint_bytes = read_all_bytes(addr) endpoint_bytes = read_all_bytes(addr)
byte_position_to_patch = find_byte_to_patch(endpoint_bytes, 0x34) byte_position_to_patch = find_byte_to_patch(endpoint_bytes, 0x34)
print(f"Byte to patch: {hex(byte_position_to_patch)}") print(f"Position of byte to patch: {hex(byte_position_to_patch)}")
print(f"Byte is set to {hex(endpoint_bytes[byte_position_to_patch])}") print(f"Byte is set to {hex(endpoint_bytes[byte_position_to_patch])}")
print(f"-> {ASPM(int(endpoint_bytes[byte_position_to_patch])).name}") print(f"-> {ASPM(int(endpoint_bytes[byte_position_to_patch]) & 0b11).name}")
if int(endpoint_bytes[byte_position_to_patch]) != value_to_set.value:
if int(endpoint_bytes[byte_position_to_patch]) & 0b11 != value_to_set.value:
print("Value doesn't match the one we want, setting it!") print("Value doesn't match the one we want, setting it!")
patch_byte(addr, byte_position_to_patch, value_to_set.value)
patched_byte = int(endpoint_bytes[byte_position_to_patch])
patched_byte = patched_byte >> 2
patched_byte = patched_byte << 2
patched_byte = patched_byte | value_to_set.value
patch_byte(addr, byte_position_to_patch, patched_byte)
new_bytes = read_all_bytes(addr) new_bytes = read_all_bytes(addr)
print(f"Byte is set to {hex(new_bytes[byte_position_to_patch])}") print(f"Byte is now set to {hex(new_bytes[byte_position_to_patch])}")
print(f"-> {ASPM(int(new_bytes[byte_position_to_patch])).name}") print(f"-> {ASPM(int(new_bytes[byte_position_to_patch]) & 0b11).name}")
else: else:
print("Nothing to patch!") print("Nothing to patch!")