2̃XNvgɂ

܂ȉώ菇͂Ȋ
1.boot.img(zImage)ɂlzmakꂽJ[lߍ܂Ă̂ŁA؂o(傫5`7MBx)
2.؂okt@CWJ20MBx̃t@CoĂ
3.20MBx̃t@CJ[l{̂ŁAoCiς(EDFC6ӏ)
4.ĈkČʂboot.img(zImage)ɖߍ

L̃J[lύƂ̎菇1`2A4sXNvgł
Win10x64ɃCXg[Cygwin64œmFĂ܂
ȂAunlzma/lzma/targpĂ邽߁AepbP[W̓KvɂȂ܂
(R낤Ǝv̂Ă܂)
  liblzma5: LZMA de/compressor library (runtime)
  tar: A GNU file archiving program

XNvg1 unpack
./unpack.sh boot.img
@E菇12s܂
@EɑΏۂboot.img(zImage)t@Cw肵܂
@Ekernel_workfBNg쐬A̒Ɉȉ3t@Co͂܂
@@@kernel - WJ̃J[l{́Aς܂
@@@header - kt@C؂o̎c肻̂P(擪)A菇4(repack)ōėp܂
@@@footer - kt@C؂o̎c肻̂Q()A菇4(repack)ōėp܂
@@kernel_workfBNg݂Ăꍇ͈Ugƍ폜čč쐬܂

XNvg2 repack
./repack.sh
@E菇4s܂
@E͂܂
@Ekernel_workfBNg3t@Cpboot.img(zImage)č\AKERNEL.taro͂܂


Ek`LZMÂݑΉ܂(ŋߍXVĂ郍LZMAȂ悤Ȃ̂ŖȂƎv܂)
ErepackɃJ[lĈkʁA{TCY1oCgł傫Ȃꍇ̓G[ƂȂAƌpłȂȂ܂
@ȂȂꍇ̓[߂œTCYɒ܂
@ꉞƂāAʂ̃ZIPTCY傫ڂboot.imgunpackēheader/footer𗬗pAƂi܂
@header/footer̒g͂LZMAWJvOȂ̂ŗp͉\ł



菇3ɂ

kernelt@CStirling̃oCiGfB^ŉς܂
ωӏ͈ȉ6ӏ(EDFC)
@ED 00 A0 E3  FC 00 A0 E3 5
@ED 20 A0 E3  FC 20 A0 E3 1

O(ED 00 A0 E3)͂̃ł͂5ӏ悤ł
(ED 20 A0 E3)͐x܂AO5̂ɂ̂Yӏł
̓Iȉωӏ͓Yt摜QƂĂ
ŋߍXVĂ郍͂̃p^[ŉωӏłƎv܂



Ql

XNvg쐬ɂAȉ̋LQƂ܂
https://forum.xda-developers.com/galaxy-s2/help/guide-unpack-repack-boot-img-t2455103

ωӏ̃\[X()ł
https://github.com/LineageOS/android_kernel_samsung_smdk4412/blob/cm-14.1/arch/arm/mach-exynos/board-gps-gsd4t.c
̓Iɂ͒萔GPIO_GPS_PWR_EN̒l237ŁAgpĂ6ӏ(50, 53, 54, 55, 58, 84s)Yӏł



C

2018/5/2 菇3̉ωӏɊԈႢ̂ŏCA܂EDFĈ݂ł邱ƂǋL
@) ED 20 A0 E3  FC 00 A0 E3 1
@) ED 20 A0 E3  FC 20 A0 E3 1

2018/5/1 o



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