Huawei Y635 (huawei-y635)

Features
Flashing	Works
USB Networking	Works
Internal storage
SD card
Battery	Works
Screen	Works
Touchscreen	Works
Multimedia
3D Acceleration	Works
Audio	Works
Camera	Broken
Camera Flash
Connectivity
WiFi	Works
Bluetooth	Works
GPS	Broken
Modem
Calls	Broken
SMS	Broken
Mobile data	Broken
Miscellaneous
FDE	Works
USB OTG	Broken
Sensors
Accelerometer	Works
Ambient Light	Works
Proximity	Works
Haptics

Huawei Y635
	; Huawei Y635 on mainline with Xfce
Manufacturer	Huawei
Name	Y635
Codename	huawei-y635
Released	2015
Type	handset
Hardware
Chipset	Qualcomm Snapdragon 410 (MSM8916)
CPU	Quad-core 1.2 GHz Cortex-A53
GPU	Adreno 306
Display	480 x 854 (IPS LCD, 5.0")
Storage	4/8 GB
Memory	1 GB
Architecture	aarch64
Software
Original software	Android
Original version	4.4.4 (EMUI 3)
FOSS bootloader	yes
postmarketOS
Category	testing
Pre-built images	no
Mainline	yes
Unixbench Whet/Dhry score	915.7
Optional Generic Port	Generic MSM8916 (qcom-msm8916)

This page is about the dedicated port of this device. There is also an optional generic port available for this device - see Generic MSM8916 (qcom-msm8916).

Contributors

Maintainer(s)

User:Ungeskriptet

Users owning this device

Ungeskriptet (Notes: Secure boot off; First device I ever mainlined)

How to enter flash mode

Fastboot: Power on the device with both Power and Volume Down buttons while connected to a PC with a USB cable.
Recovery: Power on the device with both Power and Volume Up buttons.
lk2nd Fastboot: Power on the device. After it vibrates, hold Volume Down.
lk2nd Recovery: Power on the device. After it vibrates, hold Volume Up.

EDL mode

To enter the EDL mode, these two points must be shorted while powering it on. If lsusb -d 05c6:9008 shows you a device, you can let go of the short.

Preparation

Follow the preparation guide for the Huawei Ascend G7 until the Flashing new firmware part (Resize the tz partition and flash custom hyp and tz).

Note: If your bootloader is already unlocked, it's possible to flash those partitions with lk2nd/TWRP.

Flashing custom bootloader

This is necessary, since Huawei's bootloader can't load 64-bit kernels at all. This will also "unlock" the bootloader by using a different one that's bundled into qhypstub.

Build lk1st (Check the README.md for requirements.)

$ git clone https://github.com/msm8916-mainline/lk2nd && cd lk2nd
$ make TOOLCHAIN_PREFIX=arm-none-eabi- lk1st-msm8916 LK1ST_PANEL=boe_otm8019a_5p0_fwvga_video LK1ST_DTB=msm8916-huawei-y635-l01

Build qhypstub with bundled lk1st

$ git clone -b bundle-aboot https://github.com/msm8916-mainline/qhypstub.git
$ cd qhypstub
$ git clone https://github.com/msm8916-mainline/qtestsign.git
$ make CROSS_COMPILE=aarch64-linux-gnu- BUNDLE_ABOOT=../lk2nd/build-lk1st-msm8916/lk.bin qhypstub-test-signed.mbn

Download and Install the EDL tool (follow the instructions on the GitHub page to install it) together with the required loader
Boot into EDL mode

Optionally backup all partitions except userdata from the phone

$ ./edl --memory=emmc --loader=linux-board-support-package-r1034.2.1/loaders/prog_emmc_firehose_8916.mbn rl backup --skip=userdata --genxml

Flash qhypstub to the hyp partition

$ ./edl --memory=emmc --loader=linux-board-support-package-r1034.2.1/loaders/prog_emmc_firehose_8916.mbn w hyp ../qhypstub/qhypstub-test-signed.mbn

Reboot the phone: ./edl reset

Note: If you see Tux after it reboots, you have the new bootloader!

Installation

Note: Both Linux and lk1st only support the boe-otm8019a panel.

Install lk1st (alternative bootloader that provides a standard fastboot interface and allows booting 64-bit kernels)
Follow Qualcomm Snapdragon 410/412 (MSM8916)#Installation.

lk2nd

Note: Not really needed anymore, since we already have lk2nd as our primary bootloader (lk1st).

The phone does not boot the default lk2nd image found on GitHub. In order to get a working image, lk2nd needs to be compiled manually. Check the README.md for requirements.

$ git clone https://github.com/msm8916-mainline/lk2nd && cd lk2nd
$ sed -i '/$(LOCAL_DIR)\/msm8916-mtp.dtb \\/d' dts/msm8916/rules.mk
$ make TOOLCHAIN_PREFIX=arm-none-eabi- lk2nd-msm8916
$ fastboot flash boot build-lk2nd-msm8916/lk2nd.img

Hardware status

Component	Model	Status	Notes
MicroUSB	USB 2.0	Y	Working only in peripheral mode
eMMC	Toshiba 008GE0	Y
Charging	PM8916	Y	Uses PM8916 for charging
Volume/Power/Home keys	GPIO	Y
Touchscreen	MStar msg2138	Y
Capacitive keys	Part of MStar msg2138 Touchscreen	Y
Accelerometer	STMicroelectronics lis3dh	Y
Light and proximity sensor	Avago apds9930	Y
Display	boe-otm8019a, cmi-ili9806e or tianma-otm8019a	Y
Audio	PM8916	Y	Headphone button detection works partially
GPU	Adreno 306	Y
Wi-Fi/Bluetooth	Qualcomm Atheros Prima (WCN3620)	Y
LED Flash	Texas Instruments LM3642	N	Driver available in mainline
GPS	?	N
Front camera	?	N
Main camera	?	N