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Diffstat (limited to 'installer/rb5/README')
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diff --git a/installer/rb5/README b/installer/rb5/README new file mode 100644 index 0000000..ee59bdb --- /dev/null +++ b/installer/rb5/README @@ -0,0 +1,70 @@ +These instructions will help you flashing the prebuilt bootloader +and AOSP images(built from sources) on rb5. + +First, make sure you have built the AOSP images for RB5 by +running the rb5-userdebug lunch target. + + +Boot the board into fastboot mode: +---------------------------------- +The easiest way to boot into fastboot mode is to run something +like "adb reboot bootloader" from the host, or +"reboot bootloader" on the device. However, this +functionality may depend on the software installed on the board +to work, so you may need to manually enter fastboot mode as +follows. + +To manually enter fastboot mode: +-------------------------------- +* To manually boot the board into fastboot mode, press DOWN arrow + key over serial UART console when restarting the board. + + OR + +* Follow the instructions here +https://www.96boards.org/documentation/consumer/dragonboard/qualcomm-robotics-rb5/installation/board-recovery.md.html#booting-into-fastboot + + +Flash the board: +---------------- +Once the board is in fastboot mode, you can then flash bootloader +binaries and AOSP images by running the following script from +device/linaro/dragonboard/installer/rb5/ directory: + + $ ./flash-all-aosp.sh + + +Troubleshooting: +---------------- +* If you have flashed AOSP images and you can see the boot logs + on Serial prompt but no UI then try updating the lt9611uxc + firmware version. Factory shipped RB5 has an older version of + lt9611uxc firmware flashed on it and it is incompatible with + upstream kernel. Try updating the firmware version by running + the following adb shell commands: + + $ adb wait-for-device; adb root; adb shell "echo 1 > /sys/bus/i2c/devices/5-002b/lt9611uxc_firmware" + +* Make sure the USB-C cable is connected. As it has to be + removed to fully power the device down, it is easy to forget + to reconnect it! + +* If you cannot get the board into fastboot mode, or for some + reason the flash-all-aosp.sh script does not work, you can do + a full recovery flash of the board using the following + instructions. + + +Recovery: +-------- +First boot into recovery mode by follwing the recovery +instructions from here: +https://www.96boards.org/documentation/consumer/dragonboard/qualcomm-robotics-rb5/installation/board-recovery.md.html + +Then run the recovery script from the +device/linaro/dragonboard/installer/rb5/ directory: + + $ ./recovery.sh + +This will do a recovery flash of the ptable and bootloader +binaries. |