b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
44 lines
2.7 KiB
Python
44 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# SPDX-License-Identifier: MPL-2.0
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"""Compile a read-only FunctionFS diagnostic. Does not access a phone."""
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import json
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from pathlib import Path
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import stat
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import struct
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import subprocess
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import sys
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from tundra import ROOT, cpio, linker, digest, now, save, kernel_files, checked_source
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def main():
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folder=ROOT/'out/usb-diagnostic';folder.mkdir(parents=True,exist_ok=True)
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common=['-Os','-ffreestanding','-fno-builtin','-fno-stack-protector','-fno-pie',
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'-fno-unwind-tables','-fno-asynchronous-unwind-tables','-Wall','-Wextra','-Werror','-nostdlib','-static']
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builds={}
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for arch in ('x86_64','aarch64'):
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out=folder/arch;out.mkdir(exist_ok=True)
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cmd=(['gcc','-no-pie','-mgeneral-regs-only'] if arch=='x86_64' else ['clang','--target=aarch64-linux-gnu',f'--ld-path={linker()}'])
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cmd += common+['-Wl,--build-id=none','-Wl,-e,_start',str(ROOT/'boot/usb-init.c'),'-o',str(out/'init')]
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subprocess.run(cmd,check=True)
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data=(out/'init').read_bytes()
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assert struct.unpack_from('<H',data,18)[0]==(62 if arch=='x86_64' else 183)
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entries=[(p,stat.S_IFDIR|0o755,b'',0,0) for p in ('dev','proc','sys')]
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entries += [('dev/console',stat.S_IFCHR|0o600,b'',5,1),('init',stat.S_IFREG|0o755,data,0,0)]
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(out/'initramfs.cpio.gz').write_bytes(cpio(entries))
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builds[arch]={'initSha256':digest(out/'init'),'ramdiskSha256':digest(out/'initramfs.cpio.gz'),'command':cmd}
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kernel=kernel_files();board=json.loads((ROOT/'devices/sargo/device.json').read_text())['diagnosticBoot']
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image=folder/'tundra-sargo-usb-NOT-FOR-FLASHING.img'
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cmd=[sys.executable,str(checked_source('aosp-mkbootimg')/'mkbootimg.py'),
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'--kernel',str(kernel/'Image.lz4-dtb'),'--ramdisk',str(folder/'aarch64/initramfs.cpio.gz'),
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'--header_version',str(board['headerVersion']),'--pagesize',str(board['pageSize']),
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'--base',board['base'],'--kernel_offset',board['kernelOffset'],'--ramdisk_offset',board['ramdiskOffset'],
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'--tags_offset',board['tagsOffset'],'--cmdline',board['cmdline']+' tundra.usb=1','-o',str(image)]
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subprocess.run(cmd,check=True)
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if image.stat().st_size>board['partitionSizeBytes']:raise ValueError('Image too large')
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save(folder/'build.json',{'recordedAt':now(),'sourceSha256':digest(ROOT/'boot/usb-init.c'),
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'architectures':builds,'sharedInitSha256':digest(ROOT/'boot/init.c'),'file':image.name,'imageSha256':digest(image),'bytes':image.stat().st_size,
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'hardwareTested':False,'flashReady':False,'protocol':'read-only FunctionFS, not ADB',
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'blockers':['Real firmware/slot/recovery inventory missing','Sargo UDC initialization not tested','No Gecko or Gaia in this diagnostic']})
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print(image)
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if __name__=='__main__':main()
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