Amazon Kindle Fire (amazon-otter)

From postmarketOS
Amazon Kindle Fire (1st Gen)
Manufacturer Amazon
Name Kindle Fire (1st Gen)
Codename amazon-otter
Released 2011
Category testing
Pre-built images no
Original software Android
Original version 2.3
Hardware
Chipset TI OMAP 4430 GP
CPU Dual-core 1.0 GHz Cortex-A9
GPU PowerVR SGX540
Display 600 x 1024 IPS LCD
Storage 8 GB
Memory 512 MB
Architecture ARMv7
Type Tablet
Features
USB Networking
Works
Flashing
Touchscreen
Works
Display
Partial
WiFi
Works
FDE
Mainline
Works
Battery
Works
3D Acceleration
Audio
Internal storage
USB OTG
Works
Sensors
Accelerometer
Works
Magnetometer
Ambient Light
Proximity
Hall Effect
Barometer
Power Sensor
Misc
Built-in DVB
Camera Flash
Keyboard
Touchpad
USB-A
HDMI/DP
Ir TX
Ir RX
Stylus
Memory Card
Haptics
Ethernet
FOSS bootloader


Contributors

  • Foldmorepaper
  • h_ro

Users owning this device


Root and Fastboot

If the device can reach fastboot mode, the device does not need to be rooted to install recovery since the stock bootloader is already unlocked. Typically, a "Motorola factory cable" is needed to power the device into fastboot mode, but with root and fbmode utility, the device can reboot into fastboot mode without the special cable.

Rooting with saferoot

Source: https://forum.xda-developers.com/t/root-saferoot-root-for-vruemj7-mk2-and-android-4-3.2565758/#post-48392009

$ wget https://forum.xda-developers.com/attachments/saferoot-zip.2760984/ -O saferoot.zip
$ mkdir saferoot
$ cd saferoot
$ unzip ../saferoot.zip
$ ./install.sh

Booting into fastboot from Android

Source: https://forum.xda-developers.com/t/fastboot-stock-6-2-1-fastboot-mode-without-rooting-or-cables.1414832/

$ wget https://forum.xda-developers.com/attachments/fbmode-zip.833582/ -O fbmode.zip
$ unzip fbmode.zip
$ adb push fbmode /data/local/tmp
$ adb shell chmod 755 /data/local/tmp/fbmode
$ adb shell /data/local/tmp/fbmode
$ adb reboot

Custom Bootloader

A custom version of Hashcode's (2014) u-boot port with device tree support is required to boot mainline Linux kernel. The following steps are based off of h_ro's documentation repo.

Toolchain used: Linaro GCC4.9 ARMv7 Baremetal

Build steps

$ wget https://releases.linaro.org/components/toolchain/binaries/4.9-2017.01/arm-eabi/gcc-linaro-4.9.4-2017.01-x86_64_arm-eabi.tar.xz
$ tar -xvf gcc-linaro-4.9.4-2017.01-x86_64_arm-eabi.tar.xz
$ export CROSS_COMPILE=$PWD/gcc-linaro-4.9.4-2017.01-x86_64_arm-eabi/bin/arm-eabi-
$ git clone https://github.com/hansemro/kf_u-boot.git u-boot
$ cd u-boot
$ make ARCH=arm distclean
$ make ARCH=arm omap4_kc1 -j$(nproc)

Installing bootloader

Set the device to fastboot mode and flash the bootloader directly with fastboot.

$ fastboot flash bootloader u-boot.bin

u-boot version should appear on the top right corner when lcd menu is entered. For postmarketOS, version L2.13 or newer is required.

Custom Recovery: TWRP

Download an otter recovery image from TWRP website here.

Set the device to fastboot mode and flash the recovery with fastboot.

$ fastboot flash recovery twrp-2.8.1.0-otter.img

Note Note: TWRP v2.X does not seem to support postmarketOS recovery-based install scripts.

Installation

$ pmbootstrap init
$ pmbootstrap install --split
$ pmbootstrap export
$ fastboot flash media /tmp/postmarketOS-export/amazon-otter-root.img
$ fastboot flash cache /tmp/postmarketOS-export/amazon-otter-boot.img

For more advanced installation methods, see here.

Note Note: If root image exceeds ~400MB, fastboot no longer becomes suitable method of installation due to bootloader limitations.

Stock Partition Layout

Output of parted /dev/block/mmcblk0 print while in TWRP recovery:

Model: MMC M8G2FA (sd/mmc)
Disk /dev/block/mmcblk0: 7734MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 131kB 262kB 131kB xloader
2 262kB 524kB 262kB bootloader
3 524kB 11.0MB 10.5MB dkernel
4 11.0MB 212MB 201MB ext4 dfs
5 212MB 229MB 16.8MB recovery
6 229MB 296MB 67.1MB ext4 backup
7 296MB 307MB 10.5MB boot
8 307MB 312MB 5243kB ext4 splash
9 312MB 849MB 537MB ext4 system
10 849MB 2041MB 1192MB ext4 userdata
11 2041MB 2309MB 268MB ext4 cache
12 2309MB 7690MB 5380MB fat32 media

See also