Pixel6 official boot.img unpack failed
5n0wfish opened this issue · 4 comments
5n0wfish commented
The ver 12.1.0 (SP2A.220405.004, Apr 2022) unpack succeeded,
but the ver 12.1.0 (SQ3A.220705.003, Jul 2022) had wrong.
cfig commented
boot.img in "oriole-sq3a.220705.003":
$ md5sum boot.img
8d71e89f8a0ecc288e14ca7d06cb0e99 boot.img
My local test pass.
Can you paste your log?
5n0wfish commented
Yeah, oriole-sq3a.220705.003=>boot.img can be certainly unpacked. But boot.img=>kernel is not a really kernel.
$ hexdump -C kernel |head -5
00000000 02 21 4c 18 fd 8d 3e 00 95 4d 5a 00 91 ff bf 9a |.!L...>..MZ.....|
00000010 14 00 01 00 20 cc 02 06 00 2f 0a 00 01 00 0b f9 |.... ..../......|
00000020 00 41 52 4d 64 40 00 00 00 50 45 00 00 64 aa 02 |.ARMd@...PE..d..|
00000030 1c 00 f1 00 a0 00 06 02 0b 02 02 14 00 00 96 02 |................|
00000040 00 00 35 14 00 76 e8 03 6b 02 00 00 01 26 00 00 |..5..v..k....&..|
In a really kernel like SP2A.220405.004 , ARMd is located at offset 0x38, but oriole-sq3a.220705.003 not.
cfig commented
Good catch ~
Latest boot.img=>kernel is an lz4 compressed kernel.
If you decompress it:
red➜ ~/work/boot git:(394bfc5) ✗ lz4cat build/unzip_boot/kernel | xxd -g1 | head -5
00000000: 4d 5a 00 91 ff bf 9a 14 00 00 00 00 00 00 00 00 MZ..............
00000010: 00 00 cc 02 00 00 00 00 0a 00 00 00 00 00 00 00 ................
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030: 00 00 00 00 00 00 00 00 41 52 4d 64 40 00 00 00 ........ARMd@...
00000040: 50 45 00 00 64 aa 02 00 00 00 00 00 00 00 00 00 PE..d...........
You can see "ARMd" is located at the expected offset.
Cheers!
cfig commented
Close it.
Please comment if you still meet any problems ~