Android/Security

Firmware security for the Android and Sugar build.

• set up for signing using firmware security and the bios-crypto source,
• copy /boot/alt/vmlinuz and /boot/alt/initrd.img from the Android build,
• sign the Android kernel with the deployment operating system (o1) key,

sign-os.sh os vmlinuz runos4.zip

• sign the Android ramdisk

sign-os.sh os initrd.img runrd4.zip

• place both in /boot/alt,
• link the activation mode to the Sugar activation kernel and ramdisk,

ln -s ../runos4.zip actos4.zip
ln -s ../actrd4.zip actrd4.zip

• For a laptop without activation lease, the actrd4.zip must obtain a lease, write it to /security/lease.sig on the first partition, then reboot. To skip this step, link actrd4.zip to runrd4.zip instead, and the firmware will boot Android even if there is no activation lease.
• For a laptop preactivated with the ak tag, actrd4.zip is not used.

• sign the Q7B40 firmware release with the deployment firmware (w1) key,
• copy the signed bootfw4.zip file to /boot/
• test booting using the O game key to select Android, or no O game key to select Sugar, using the X game key to enable security if it is not enabled,
• test booting using the rocker down key to display the boot menu.