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Comment Configfile better

This commit is contained in:
Elliot Nunn 2019-05-26 10:52:40 +08:00
parent 19ec05be87
commit db2b03a4fd
1 changed files with 26 additions and 6 deletions
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32
tbxi/powerpc_dump.py
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@ -10,22 +10,40 @@ from . import dispatcher
PAD = b'kc' * 100
HEADER_COMMENT = """
Automated dump of the ConfigInfo page of a Power Mac ROM
(at least one per ROM)
The first section contains the simple structure fields. The [LowMemory]
section instructs the kernel to set low-memory globals. The
[PageMappingInfo] section lists parts of ConfigInfo that tell the kernel
how to lay out the PowerPC page table. (Hint: lines not starting with a
tab are pointers into an array). The [BatMappingInfo] section similarly
tells the kernel how to lay out the Block Allocation Table registers.
Fields encoding the offset of a ROM component are computed from the base
of ConfigInfo, but for clarity are expressed here relative to the "BASE"
of ROM. ConfigInfo itself will be placed at -ROMImageBaseOffset.
"""
HEADER_COMMENT = '\n'.join('# ' + l if l else '' for l in HEADER_COMMENT.strip().split('\n'))
CONFIGINFO_TEMPLATE = """
ROMImageBaseOffset= # [28] Offset of Base of total ROM image
ROMImageBaseOffset= # [28] Offset of Base of total ROM image [./EverythingElse placed here]
ROMImageSize= # [2C] Number of bytes in ROM image
ROMImageVersion= # [30] ROM Version number for entire ROM
# ROM component Info (offsets are from base of ConfigInfo page)
Mac68KROMOffset= # [34] Offset of base of Macintosh 68K ROM
Mac68KROMOffset= # [34] Offset of base of Macintosh 68K ROM [./Mac68KROM placed here]
Mac68KROMSize= # [38] Number of bytes in Macintosh 68K ROM
ExceptionTableOffset= # [3C] Offset of base of PowerPC Exception Table Code
ExceptionTableOffset= # [3C] Offset of base of PowerPC Exception Table Code [./ExceptionTable placed here]
ExceptionTableSize= # [40] Number of bytes in PowerPC Exception Table Code
HWInitCodeOffset= # [44] Offset of base of Hardware Init Code
HWInitCodeOffset= # [44] Offset of base of Hardware Init Code [./HWInit placed here]
HWInitCodeSize= # [48] Number of bytes in Hardware Init Code
KernelCodeOffset= # [4C] Offset of base of NanoKernel Code
KernelCodeOffset= # [4C] Offset of base of NanoKernel Code [./NanoKernel placed here]
KernelCodeSize= # [50] Number of bytes in NanoKernel Code
EmulatorCodeOffset= # [54] Offset of base of Emulator Code
@ -67,7 +85,7 @@ SharedMemoryAddr= # [35C] physical address of Mac/Smurf shared
PA_RelocatedLowMemInit= # [360] physical address of RelocatedLowMem
OpenFWBundleOffset= # [364] Offset of base of OpenFirmware PEF Bundle
OpenFWBundleOffset= # [364] Offset of base of OpenFirmware PEF Bundle [./OpenFW placed here]
OpenFWBundleSize= # [368] Number of bytes in OpenFirmware PEF Bundle
LA_OpenFirmware= # [36C] logical address of Open Firmware
@ -115,6 +133,8 @@ def find_configinfo(binary):
def dump_configinfo(binary, offset, push_line):
s = ConfigInfo.unpack_from(binary, offset)
push_line(HEADER_COMMENT + '\n')
# First section (no [header]):
# Raw key=value lines not resembling the struct in PCCInfoRecordsPriv.h
for line in CONFIGINFO_TEMPLATE.split('\n'):