mirror of
https://github.com/86Box/bios-tools.git
synced 2026-02-22 01:25:34 -07:00
Further work on Phoenix WIP
This commit is contained in:
RichardG867
@@ -195,6 +195,7 @@ static struct {
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"= Award Decompression Bios =", NULL, AwardExtract}, {
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"awardext.rom", NULL, AwardExtract}, {
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"Phoenix Technologies", "BCPSEGMENT", PhoenixExtract}, {
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"IBM AT Compatible Phoenix NuBIOS", "BCPSEGMENT", PhoenixExtract}, { /* Phoenix copyrights scrubbed (Gateway Solo 2500) */
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"\xEE\x88SYSBIOS", "\xEE\x88", SystemSoftExtract}, {
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"\xEE\x88\x42IOS SCU", "\xEE\x88", SystemSoftExtract}, {
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"\xFF\x88SYSBIOS", "\xFF\x88", SystemSoftExtract}, { /* Insyde */
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@@ -2186,184 +2186,195 @@ class PhoenixAnalyzer(Analyzer):
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# Save post-version sign-on to be restored later.
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post_version = self.signon
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# Determine if this is a Dell BIOS.
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match = self._dell_system_pattern.search(file_data)
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if match:
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# Backup in case no Phoenix version is found, which is possible given compression.
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if not self.version:
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self.version = 'Dell'
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# Extract the model as a sign-on.
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self.signon = match.group(0).decode('cp437', 'ignore')
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self.debug_print('Dell model:', self.signon)
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# Add version information to the sign-on, looking at the data after the model first...
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version_index = match.start(0) + 0x20
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match = self._dell_version_code_pattern.match(file_data[version_index:version_index + 3])
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if not match:
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# ...then the version strings...
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match = self._dell_version_pattern.search(file_data)
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if not match:
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# ...then on byte 48 of some files.
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match = self._dell_version_code_pattern.match(file_data[0x30:0x33])
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if match:
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version_string = match.group(1)
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self.signon += '\nBIOS Version: ' + version_string.decode('cp437', 'ignore')
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self.debug_print('Dell version:', version_string)
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# Extract sign-on from BCPOST on 4.0x and newer BIOSes.
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if bios_maj != None and bios_min != None and code_segment != None:
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bcpost = bcp.get('BCPOST', [None])[0]
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else:
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# Determine if this is some sort of HP Vectra BIOS.
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match = self._hp_pattern.search(file_data)
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if match:
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self.version = 'HP'
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bcpost = None
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if bcpost and len(bcpost.data) >= 0x25:
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# BCPOST versions observed:
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# - 0.1 (4.01)
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# - 0.3 (4.02-4.05)
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# - 0.4 (4.04-4.05)
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# - 1.3 (4.0R6)
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# - 1.4 (SecureCore)
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self.debug_print('BCPOST version:', bcpost.version_maj, bcpost.version_min)
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# Extract code as a string.
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self.string = match.group(1).decode('cp437', 'ignore')
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# If this is a compressed BIOS, load decompressed segments.
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segment_ranges = []
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strings_files = []
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if compressed:
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# Go through extracted files.
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for file_in_dir in os.listdir(file_path):
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match = self._segment_pattern.match(file_in_dir)
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if match:
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# Read segment data.
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try:
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f = open(os.path.join(file_path, file_in_dir), 'rb')
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data = f.read()
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f.close()
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except:
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self.debug_print('Could not load segment file:', file_in_dir)
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continue
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# Extract the version number as a sign-on.
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match = self._hp_signon_pattern.search(file_data)
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if match:
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self.signon = match.group(0).decode('cp437', 'ignore')
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self.debug_print('HP version:', self.signon)
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else:
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# Extract sign-on from Ax86 and older BIOSes.
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match = self._rombios_signon_pattern.search(file_data)
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if match:
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copyright_index = match.start(0)
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if self._rombios_signon_dec_pattern.match(file_data[copyright_index - 48:copyright_index]):
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self.debug_print('Ignored bogus sign-on on DEC BIOS')
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match = None
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else:
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signon_log = 'std'
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else:
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match = self._rombios_signon_alt_pattern.search(file_data)
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signon_log = 'alt'
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if match:
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end = match.end(0)
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if file_data[end] != 0xfa: # (unknown 8088 PLUS 2.52)
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signon = util.read_string(file_data[end:end + 256])
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if len(signon) <= 3: # Phoenix video BIOS (Commodore SL386SX25), bogus data (NEC Powermate V)
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match = None
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self.debug_print('Ignored bogus sign-on (too short)')
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# Load segment data into the virtual memory space.
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self.debug_print('Loaded segment file:', file_in_dir)
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offset = int(match.group(1), 16) << 4
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target_len = min(len(virtual_mem) - offset, len(data))
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if target_len >= 0:
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virtual_mem[offset:offset + target_len] = data[:target_len]
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segment_ranges.append((offset, offset + target_len))
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elif self._strings_pattern.match(file_in_dir):
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# Read string data.
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try:
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f = open(os.path.join(file_path, file_in_dir), 'rb')
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data = f.read()
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f.close()
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except:
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self.debug_print('Could not load strings file:', file_in_dir)
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continue
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# SecureCore may have 4 bytes before the STRPACK header.
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offset = data.find(b'STRPACK-BIOS')
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if offset > -1:
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strings_files.append(data[offset:])
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self.debug_print('Loaded strings file:', file_in_dir)
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else:
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self.signon = signon
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self.debug_print('Raw old', signon_log, 'sign-on:', repr(self.signon))
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else:
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self.debug_print('Ignored bogus sign-on, first bytes:', repr(file_data[end:end + 8]))
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match = None
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if not match and bios_maj != None and bios_min != None and code_segment != None:
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# Extract sign-on from BCPOST on 4.0x and newer BIOSes.
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bcpost = bcp.get('BCPOST', [None])[0]
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if bcpost and len(bcpost.data) >= 0x25:
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# BCPOST versions observed:
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# - 0.1 (4.01)
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# - 0.3 (4.02-4.05)
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# - 0.4 (4.04-4.05)
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# - 1.3 (4.0R6)
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# - 1.4 (SecureCore)
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self.debug_print('BCPOST version:', bcpost.version_maj, bcpost.version_min)
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# If this is a compressed BIOS, load decompressed segments.
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segment_ranges = []
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strings_files = []
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if compressed:
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# Go through extracted files.
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for file_in_dir in os.listdir(file_path):
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match = self._segment_pattern.match(file_in_dir)
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if match:
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# Read segment data.
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try:
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f = open(os.path.join(file_path, file_in_dir), 'rb')
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data = f.read()
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f.close()
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except:
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self.debug_print('Could not load segment file:', file_in_dir)
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continue
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# Load segment data into the virtual memory space.
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self.debug_print('Loaded segment file:', file_in_dir)
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offset = int(match.group(1), 16) << 4
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target_len = min(len(virtual_mem) - offset, len(data))
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if target_len >= 0:
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virtual_mem[offset:offset + target_len] = data[:target_len]
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segment_ranges.append((offset, offset + target_len))
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elif self._strings_pattern.match(file_in_dir):
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# Read string data.
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try:
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f = open(os.path.join(file_path, file_in_dir), 'rb')
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data = f.read()
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f.close()
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except:
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self.debug_print('Could not load strings file:', file_in_dir)
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continue
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# SecureCore may have 4 bytes before the STRPACK header.
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offset = data.find(b'STRPACK-BIOS')
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if offset > -1:
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strings_files.append(data[offset:])
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self.debug_print('Loaded strings file:', file_in_dir)
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else:
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self.debug_print('Bad strings file:', file_in_dir)
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# Sort strings files, prioritizing the "us" (English) language.
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strings_files.sort(key=lambda x: x[0x20:0x22] == b'us' and b'\x00\x00' or x[0x20:0x22])
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# Read sign-on string pointer.
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signon_segment = code_segment
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signon_offset, = struct.unpack('<H', bcpost.data[0x23:0x25])
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# Handle 4.04+ where the string pointer points to a string table pointer instead of a string.
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signon = None
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if bios_maj >= 6 or (bios_maj == 4 and bios_min >= 6):
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# 4.0R6+: string table pointer is relative to string table file minus header.
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signon_offset += 0x1c
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self.debug_print('BCPOST sign-on points to string table file offset', hex(signon_offset))
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# Make sure we have a strings file first.
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if len(strings_files) > 0:
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string_table_offset = strings_files[0][signon_offset:signon_offset + 2]
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if len(string_table_offset) == 2:
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signon_offset, = struct.unpack('<H', string_table_offset)
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signon_offset += 0x1c
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self.debug_print('BCPOST sign-on string table entry points to file offset', hex(signon_offset))
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# Phoenix allowed for some line drawing that is not quite CP437.
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# The actual characters used haven't been confirmed in hardware.
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signon = strings_files[0][signon_offset:signon_offset + 256]
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for args in ((b'\x91', b'\xDA'), (b'\x92', b'\xC4'), (b'\x87', b'\xBF'), (b'\x86', b'\xB3'), (b'\x90', b'\xC0'), (b'\x88', b'\xD9')):
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signon = signon.replace(*args)
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else:
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self.debug_print('BCPOST sign-on string table short read')
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# Try to ascertain the string table location from the language code
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# and next 2 bytes if no STRPACK header is present. (HP B013300I)
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offset = data.find(b'us\x14\x00')
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if offset > -1:
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header = data[offset - 0x20:offset]
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if len(header) < 0x20:
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header = (b'\x00' * (0x20 - len(header))) + header
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strings_files.append(header + data[offset:])
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else:
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self.debug_print('BCPOST missing strings file')
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self.debug_print('Bad strings file:', file_in_dir)
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# Sort strings files, prioritizing the "us" (English) language.
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strings_files.sort(key=lambda x: x[0x20:0x22] == b'us' and b'\x00\x00' or x[0x20:0x22])
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# Read sign-on string pointer.
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signon_segment = code_segment
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signon_offset, = struct.unpack('<H', bcpost.data[0x23:0x25])
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# Handle 4.04+ where the string pointer points to a string table pointer instead of a string.
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signon = None
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if bios_maj >= 6 or (bios_maj == 4 and bios_min >= 6):
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# 4.0R6+: string table pointer is relative to string table file minus header.
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signon_offset += 0x1c
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self.debug_print('BCPOST sign-on points to string table file offset', hex(signon_offset))
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# Make sure we have a strings file first.
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if len(strings_files) > 0:
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string_table_offset = strings_files[0][signon_offset:signon_offset + 2]
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if len(string_table_offset) == 2:
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signon_offset, = struct.unpack('<H', string_table_offset)
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signon_offset += 0x1c
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self.debug_print('BCPOST sign-on string table entry points to file offset', hex(signon_offset))
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# Phoenix allowed for some line drawing that is not quite CP437.
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# The actual characters used haven't been confirmed in hardware.
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signon = strings_files[0][signon_offset:signon_offset + 256]
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for args in ((b'\x91', b'\xDA'), (b'\x92', b'\xC4'), (b'\x87', b'\xBF'), (b'\x86', b'\xB3'), (b'\x90', b'\xC0'), (b'\x88', b'\xD9')):
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signon = signon.replace(*args)
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else:
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self.debug_print('BCPOST sign-on string table short read')
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else:
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self.debug_print('BCPOST missing strings file')
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else:
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self.debug_print('BCPOST sign-on points to', hex(signon_segment), ':', hex(signon_offset))
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if bios_maj >= 5 or (bios_maj == 4 and bios_min >= 4):
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# 4.04-4.05: string table pointer is relative to string table segment.
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signon_offset = (signon_segment << 4) + signon_offset
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string_table_offset = virtual_mem[signon_offset:signon_offset + 2]
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if len(string_table_offset) == 2:
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# Look for a string table segment overlapping the string pointer's segment and offset.
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for start, end in segment_ranges:
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if signon_offset >= start and signon_offset < end:
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signon_segment = start >> 4
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break
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# Now we should have a pointer to the actual string.
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signon_offset, = struct.unpack('<H', string_table_offset)
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self.debug_print('BCPOST sign-on string table entry points to', hex(signon_segment), ':', hex(signon_offset))
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else:
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self.debug_print('BCPOST sign-on string table short read')
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# Add segment to pointer.
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signon_offset += signon_segment << 4
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signon = virtual_mem[signon_offset:signon_offset + 256]
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# Read string if one was found.
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if signon:
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self.signon = util.read_string(signon)
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self.debug_print('Raw BCPOST sign-on:', repr(self.signon))
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else:
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# Determine if this is a Dell BIOS.
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match = self._dell_system_pattern.search(file_data)
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if match:
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# Backup in case no Phoenix version is found, which is possible given compression.
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if not self.version:
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self.version = 'Dell'
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# Extract the model as a sign-on.
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self.signon = match.group(0).decode('cp437', 'ignore')
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self.debug_print('Dell model:', self.signon)
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# Add version information to the sign-on, looking at the data after the model first...
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version_index = match.start(0) + 0x20
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match = self._dell_version_code_pattern.match(file_data[version_index:version_index + 3])
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if not match:
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# ...then the version strings...
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match = self._dell_version_pattern.search(file_data)
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if not match:
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# ...then on byte 48 of some files.
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match = self._dell_version_code_pattern.match(file_data[0x30:0x33])
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if match:
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version_string = match.group(1)
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self.signon += '\nBIOS Version: ' + version_string.decode('cp437', 'ignore')
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self.debug_print('Dell version:', version_string)
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else:
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# Determine if this is some sort of HP Vectra BIOS.
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match = self._hp_pattern.search(file_data)
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if match:
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self.version = 'HP'
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# Extract code as a string.
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self.string = match.group(1).decode('cp437', 'ignore')
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# Extract the version number as a sign-on.
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match = self._hp_signon_pattern.search(file_data)
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if match:
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self.signon = match.group(0).decode('cp437', 'ignore')
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self.debug_print('HP version:', self.signon)
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else:
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# Extract sign-on from Ax86 and older BIOSes.
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match = self._rombios_signon_pattern.search(file_data)
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if match:
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copyright_index = match.start(0)
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if self._rombios_signon_dec_pattern.match(file_data[copyright_index - 48:copyright_index]):
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self.debug_print('Ignored bogus sign-on on DEC BIOS')
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match = None
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else:
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self.debug_print('BCPOST sign-on points to', hex(signon_segment), ':', hex(signon_offset))
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if bios_maj >= 5 or (bios_maj == 4 and bios_min >= 4):
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# 4.04-4.05: string table pointer is relative to string table segment.
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signon_offset = (signon_segment << 4) + signon_offset
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string_table_offset = virtual_mem[signon_offset:signon_offset + 2]
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if len(string_table_offset) == 2:
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# Look for a string table segment overlapping the string pointer's segment and offset.
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for start, end in segment_ranges:
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if signon_offset >= start and signon_offset < end:
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signon_segment = start >> 4
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break
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# Now we should have a pointer to the actual string.
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signon_offset, = struct.unpack('<H', string_table_offset)
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self.debug_print('BCPOST sign-on string table entry points to', hex(signon_segment), ':', hex(signon_offset))
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else:
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self.debug_print('BCPOST sign-on string table short read')
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# Add segment to pointer.
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signon_offset += signon_segment << 4
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signon = virtual_mem[signon_offset:signon_offset + 256]
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# Read string if one was found.
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if signon:
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self.signon = util.read_string(signon)
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self.debug_print('Raw BCPOST sign-on:', repr(self.signon))
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signon_log = 'std'
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else:
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match = self._rombios_signon_alt_pattern.search(file_data)
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signon_log = 'alt'
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if match:
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end = match.end(0)
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if file_data[end] != 0xfa: # (unknown 8088 PLUS 2.52)
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signon = util.read_string(file_data[end:end + 256])
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if len(signon) <= 3: # Phoenix video BIOS (Commodore SL386SX25), bogus data (NEC Powermate V)
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match = None
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self.debug_print('Ignored bogus sign-on (too short)')
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else:
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self.signon = signon
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self.debug_print('Raw old', signon_log, 'sign-on:', repr(self.signon))
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else:
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self.debug_print('Ignored bogus sign-on, first bytes:', repr(file_data[end:end + 8]))
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match = None
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# Restore post-version sign-on.
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if post_version != self.signon:
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Block a user