mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Nathaniel Mitchell
230 lines
9.5 KiB
Python
230 lines
9.5 KiB
Python
#CHIPSEC: Platform Security Assessment Framework
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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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#
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import struct
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import unittest
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from tests.software import mock_helper, util
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class TestACPIChipsecUtil(util.TestChipsecUtil):
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"""Test the ACPI commands exposed by chipsec_utils."""
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def test_acpi_xsdt_list(self):
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class ACPIHelper(mock_helper.ACPIHelper):
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USE_RSDP_REV_0 = False
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def __init__(self):
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super(ACPIHelper, self).__init__()
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self._add_entry_to_xsdt(0x400)
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def read_phys_mem(self, pa_hi, pa_lo, length):
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if pa_lo == 0x400:
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return "EFGH"
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else:
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parent = super(ACPIHelper, self)
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return parent.read_phys_mem(pa_hi, pa_lo, length)
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self._chipsec_util("acpi list", ACPIHelper)
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self._assertLogValue("EFGH", "0x0000000000000400")
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def test_acpi_rsdt_list(self):
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class ACPIHelper(mock_helper.ACPIHelper):
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def __init__(self):
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super(ACPIHelper, self).__init__()
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self._add_entry_to_rsdt(0x300)
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def read_phys_mem(self, pa_hi, pa_lo, length):
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if (pa_lo >= self.EBDA_ADDRESS and
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pa_lo < self.RSDP_ADDRESS + len(self.rsdp_descriptor)):
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# Simulate a condition where there is no RSDP in EBDA
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return "\xFF" * length
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elif pa_lo == 0xE0000:
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return self.rsdp_descriptor[:length]
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elif pa_lo == 0x300:
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return "ABCD"
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else:
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parent = super(ACPIHelper, self)
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return parent.read_phys_mem(pa_hi, pa_lo, length)
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self._chipsec_util("acpi list", ACPIHelper)
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self._assertLogValue("ABCD", "0x0000000000000300")
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def test_acpi_facp_list(self):
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self._chipsec_util("acpi table FACP", mock_helper.DSDTParsingHelper)
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self._assertLogValue("DSDT", "0x00000000")
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self._assertLogValue("X_DSDT", "0x0000000000000000")
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def test_mismatch_dsdt_x_dsdt_error(self):
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class DSDTParsingHelper(mock_helper.DSDTParsingHelper):
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DSDT_ADDRESS = 0x400
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X_DSDT_ADDRESS = 0x312
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self._chipsec_util("acpi table FACP", DSDTParsingHelper)
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self._assertLogValue("DSDT", "0x00000400")
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self._assertLogValue("X_DSDT", "0x0000000000000312")
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self.assertIn(b"Unable to determine the correct DSDT address", self.log)
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def test_mismatch_dsdt_x_dsdt_ok_dsdt_zero(self):
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class DSDTParsingHelper(mock_helper.DSDTParsingHelper):
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DSDT_ADDRESS = 0x0
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X_DSDT_ADDRESS = 0x400
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self._chipsec_util("acpi table FACP", DSDTParsingHelper)
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self._assertLogValue("DSDT", "0x00000000")
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self._assertLogValue("X_DSDT", "0x0000000000000400")
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self.assertNotIn(b"Unable to determine the correct DSDT address",
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self.log)
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def test_mismatch_dsdt_x_dsdt_ok_x_dsdt_zero(self):
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class DSDTParsingHelper(mock_helper.DSDTParsingHelper):
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DSDT_ADDRESS = 0x400
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X_DSDT_ADDRESS = 0x0
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self._chipsec_util("acpi table FACP", DSDTParsingHelper)
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self._assertLogValue("DSDT", "0x00000400")
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self._assertLogValue("X_DSDT", "0x0000000000000000")
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self.assertNotIn(b"Unable to determine the correct DSDT address",
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self.log)
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def test_no_x_dsdt(self):
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class DSDTParsingHelper(mock_helper.DSDTParsingHelper):
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USE_FADT_WITH_X_DSDT = False
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DSDT_ADDRESS = 0x400
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self._chipsec_util("acpi table FACP", DSDTParsingHelper)
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self._assertLogValue("DSDT", "0x00000400")
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self._assertLogValue("X_DSDT", "Not found")
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self.assertIn(b"Cannot find X_DSDT entry in FADT.", self.log)
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def test_show_dsdt(self):
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class DSDTParsingHelper(mock_helper.DSDTParsingHelper):
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DSDT_ADDRESS = 0x600
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DSDT_DESCRIPTOR = (b"DSDT" + # Signature
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struct.pack("<I", 0x30) + # Length
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struct.pack("<B", 0x1) + # Revision
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struct.pack("<B", 0x1) + # Checksum
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b"OEMDSD" + # OEMID
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b"OEMTBLID" + # OEM Table ID
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b"OEMR" + # OEM Revision
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b"CRID" + # Creator ID
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b"CRRV" + # Creator Revision
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struct.pack("<Q", 0x129)) # AML code
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def read_phys_mem(self, pa_hi, pa_lo, length):
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if pa_lo == self.DSDT_ADDRESS:
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return self.DSDT_DESCRIPTOR[:length]
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else:
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parent = super(DSDTParsingHelper, self)
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return parent.read_phys_mem(pa_hi, pa_lo, length)
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self._chipsec_util("acpi table DSDT", DSDTParsingHelper)
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self.assertIn(b"OEMDSD", self.log)
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def test_parse_multi_table(self):
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"""Test to verify that tables with same signature are parsed correctly.
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Since usually there are several SSDT tables with the
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same signature, we test SSDT parsing.
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"""
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class SSDTParsingHelper(mock_helper.ACPIHelper):
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"""Test helper containing generic descriptor for SSDT to parse SSDT
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Three regions are defined:
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* SSDT table [0x400, 0x430]
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* SSDT table [0x600, 0x630]
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* SSDT table [0x800, 0x830]
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"""
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SSDT1_DESCRIPTOR = (b"SSDT" + # Signature
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struct.pack("<I", 0x30) + # Length
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struct.pack("<B", 0x1) + # Revision
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struct.pack("<B", 0x1) + # Checksum
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b"OEMSS1" + # OEMID
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b"OEMTBLID" + # OEM Table ID
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b"OEMR" + # OEM Revision
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b"CRID" + # Creator ID
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b"CRRV" + # Creator Revision
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struct.pack("<Q", 0x129)) # AML code
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SSDT2_DESCRIPTOR = (b"SSDT" + # Signature
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struct.pack("<I", 0x30) + # Length
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struct.pack("<B", 0x1) + # Revision
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struct.pack("<B", 0x1) + # Checksum
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b"OEMSS2" + # OEMID
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b"OEMTBLID" + # OEM Table ID
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b"OEMR" + # OEM Revision
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b"CRID" + # Creator ID
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b"CRRV" + # Creator Revision
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struct.pack("<Q", 0x929)) # AML code
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SSDT3_DESCRIPTOR = (b"SSDT" + # Signature
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struct.pack("<I", 0x30) + # Length
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struct.pack("<B", 0x1) + # Revision
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struct.pack("<B", 0x1) + # Checksum
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b"OEMSS3" + # OEMID
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b"OEMTBLID" + # OEM Table ID
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b"OEMR" + # OEM Revision
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b"CRID" + # Creator ID
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b"CRRV" + # Creator Revision
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struct.pack("<Q", 0x199)) # AML code
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def __init__(self):
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super(SSDTParsingHelper, self).__init__()
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self._add_entry_to_rsdt(0x400)
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self._add_entry_to_rsdt(0x600)
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self._add_entry_to_rsdt(0x800)
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def read_phys_mem(self, pa_hi, pa_lo, length):
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if pa_lo == 0x400:
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return self.SSDT1_DESCRIPTOR[:length]
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elif pa_lo == 0x600:
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return self.SSDT2_DESCRIPTOR[:length]
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elif pa_lo == 0x800:
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return self.SSDT3_DESCRIPTOR[:length]
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else:
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parent = super(SSDTParsingHelper, self)
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return parent.read_phys_mem(pa_hi, pa_lo, length)
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self._chipsec_util("acpi list", SSDTParsingHelper)
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self._assertLogValue("SSDT", ("0x0000000000000400, "
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"0x0000000000000600, "
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"0x0000000000000800"))
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self._chipsec_util("acpi table SSDT", SSDTParsingHelper)
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self.assertIn(b"OEMSS1", self.log)
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self.assertIn(b"OEMSS2", self.log)
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self.assertIn(b"OEMSS3", self.log)
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if __name__ == '__main__':
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unittest.main()
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