Land Rover A9 (landrover-a9)

From postmarketOS Wiki
Land Rover A9
Manufacturer Land Rover
Name A9
Codename landrover-a9
Hardware
Chipset MediaTek MT6582
CPU Quad-core 1.3 GHz Cortex-A7
GPU Mali-400 MP2
Display 480x854
Storage 8GiB
Memory 1GiB
Architecture armv7
Software
Original software Android
Original version 4.4.2
postmarketOS
Category testing
Pre-built images no
This device is marked as not booting.
Status: not booting, no active contributor


Contributors

  • alexlep

Random information

  • Obscure phone:

    This is just another clone from millions of devices from Chinese manufacturers.

  • MT6582 CPU

  • Product code F090_GPS_KK

Status

  • a boot.img file with kernel, initramfs and dtb file from pmOS does not work.
  • alexlep has a boot.img file from the vendor somewhere (extracted from the device?), that works when flashed via fastboot boot. It can not be extracted like a normal boot.img file, as reported on IRC. Probably the extraction tool can't handle the files.

  • according to alexlep, there is a 512b header in front of the kernel and initramfs:

    ramdisk and kernel has 512 bytes added in the beginning of the files

    custom header with file description

  • ...and simply prepending that header in front of a custom initramfs/kernel does not work, as he reports.

extracted boot.img, first bytes of pmOS initramfs (not working): 

sp@sppc:~/else/pmbs_work/chroot_native/pmos/extracted$ xxd -l 50 ramdisk
00000000: 1f8b 0800 0000 0000 0203 949a 0d70 1ce5  .............p..
00000010: 79c7 5fb0 09b2 621b 411d ac16 0317 c7a1  y._...b.A.......
00000020: 0ed8 d6d9 96b1 2026 11b5 70d4 5814 4344 ...... &..p.X.CD
00000030: ea49                                     .I

extracted boot.img, first bytes of the vendor's initramfs (working): 

sp@sppc:~/else/pmbs_work/chroot_native/olololo/extracted$ xxd -l 50 ramdisk
00000000: 8816 8858 f5a7 0c00 524f 4f54 4653 0000  ...X....ROOTFS..
00000010: 0000 0000 0000 0000 0000 0000 0000 0000  ................
00000020: 0000 0000 0000 0000 ffff ffff ffff ffff  ................
00000030: ffff

Links

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