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magiskboot: add support for lz4 compressed dt (extra)

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- legacy devices brought up to Android 10 may now use a compressed dt in a hdr_v0 AOSP dt variant extra section, so detect, decompress and recompress this
- so far these have only been done using lz4 compression (latest format revision magic), e.g. LOS 17.1 victara (Moto X)
This commit is contained in:
osm0sis
2020-05-25 01:09:36 -03:00
committed by John Wu
parent fde78be2b4
commit e50295d337
2 changed files with 20 additions and 3 deletions
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3
native/jni/magiskboot/bootimg.hpp
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@@ -303,9 +303,10 @@ struct boot_img {
// Flags to indicate the state of current boot image
uint16_t flags = 0;
// The format of kernel and ramdisk
// The format of kernel, ramdisk and extra
format_t k_fmt;
format_t r_fmt;
format_t e_fmt;
/***************************************************
* Following pointers points within the mmap region