SM-T295 - Finally rooted tablet!! (updated 19-May-2020)

Talich52 · Sep 5, 2020

gcrutchr said:
Thanks.
QMS mssage link gives 404 error

Try to login to user profile and then select QMS:
https://4pda.ru/forum/index.php?showuser=1348402

mehanik6 · Sep 5, 2020

gcrutchr said:
Having problem building t295 kernel from mehanik6 source code on 4PDA. Cannot login to site, even though have account. I cannot read Russian numbers in captcha. Here is error.
trying to build skyhawk. Getting error:
DTC arch/arm64/boot/dts/qcom/msm8937-pmi8950-mtp.dtb
ERROR (phandle_references): Reference to non-existent node or label "pm8953_gpios"

ERROR (phandle_references): Reference to non-existent node or label "pm8953_gpios"

ERROR (phandle_references): Reference to non-existent node or label "pm8953_gpios"

ERROR (phandle_references): Reference to non-existent node or label "pm8953_gpios"

ERROR (phandle_references): Reference to non-existent node or label "dsi_truly_1080_vid"

ERROR (phandle_references): Reference to non-existent node or label "dsi_adv7533_1080p"

this is for samsung Tab A: sm-t295 (qcom)
any idea how to fix this?

my build_kernel.sh, commands https://github.com/mehanik6/kernel_samsung_gto/blob/master/build_kernel.sh
and the compiled kernel, dtbo

gcrutchr · Sep 5, 2020 at 12:42 PM

mehanik6 said:
my build_kernel.sh, commands https://github.com/mehanik6/kernel_samsung_gto/blob/master/build_kernel.sh
and the compiled kernel, dtbo

Thanks, but all the build_kernel.sh script is doing is making the dtbo.img file.
Also, when I try to make the recovery image file, the script is still trying to build the kernel.
Where in TWRP is the link options for the kernel. In other words, the actual linker list of files, command line options, etc. ?

mehanik6 · Apr 6, 2013 34 4 0

gcrutchr said:
Thanks, but all the build_kernel.sh script is doing is making the dtbo.img file.
Also, when I try to make the recovery image file, the script is still trying to build the kernel.
Where in TWRP is the link options for the kernel. In other words, the actual linker list of files, command line options, etc. ?

kernel is built without clang,
therefore - kernel separately
- twrp separately

gcrutchr · Sep 5, 2020 at 2:18 PM

mehanik6 said:
kernel is built without clang,
therefore - kernel separately
- twrp separately

Thanks for helping, but when I do mka recoveryimage, twrp tries to build everything

mehanik6 · Apr 6, 2013 34 4 0

gcrutchr said:
Thanks for helping, but when I do mka recoveryimage, twrp tries to build everything

show the tree

gcrutchr · Sep 5, 2020 at 2:35 PM

mehanik6 said:
show the tree

Its your trees from github: device & kernel

mehanik6 · Apr 6, 2013 34 4 0

gcrutchr said:
Its your trees from github: device & kernel

Code:

# Kernel
BOARD_KERNEL_CMDLINE := console=ttyMSM0,115200,n8 androidboot.console=ttyMSM0 androidboot.hardware=qcom msm_rtb.filter=0x237 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 androidboot.bootdevice=7824900.sdhci earlycon=msm_serial_dm,0x78B0000 firmware_class.path=/vendor/firmware_mnt/image androidboot.usbconfigfs=true loop.max_part=7
BOARD_KERNEL_BASE := 0x80000000
BOARD_KERNEL_PAGESIZE := 2048
BOARD_KERNEL_OFFSET := 0x00008000
BOARD_RAMDISK_OFFSET := 0x02000000
BOARD_SECOND_OFFSET := 0x00f00000
BOARD_KERNEL_TAGS_OFFSET := 0x01e00000
BOARD_FLASH_BLOCK_SIZE := 131072 # (BOARD_KERNEL_PAGESIZE * 64)
BOARD_BOOTIMG_HEADER_VERSION := 1
TARGET_PREBUILT_KERNEL := $(DEVICE_PATH)/prebuilt/zImage-dtb
BOARD_PREBUILT_DTBOIMAGE := $(DEVICE_PATH)/prebuilt/dtbo.img
BOARD_INCLUDE_RECOVERY_DTBO := true
BOARD_MKBOOTIMG_ARGS += --ramdisk_offset $(BOARD_RAMDISK_OFFSET)
BOARD_MKBOOTIMG_ARGS += --tags_offset $(BOARD_KERNEL_TAGS_OFFSET)
BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOTIMG_HEADER_VERSION)
BOARD_CUSTOM_BOOTIMG_MK := $(DEVICE_PATH)/mkbootimg.mk
BOARD_KERNEL_IMAGE_NAME := Image.gz-dtb
#TARGET_KERNEL_ARCH := arm64
#TARGET_KERNEL_HEADER_ARCH := arm64
#TARGET_KERNEL_SOURCE := kernel/samsung/gto
#TARGET_KERNEL_CONFIG := gto_defconfig

do so

gcrutchr · Sep 5, 2020 at 2:55 PM

mehanik6 said:

Code:

# Kernel
BOARD_KERNEL_CMDLINE := console=ttyMSM0,115200,n8 androidboot.console=ttyMSM0 androidboot.hardware=qcom msm_rtb.filter=0x237 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 androidboot.bootdevice=7824900.sdhci earlycon=msm_serial_dm,0x78B0000 firmware_class.path=/vendor/firmware_mnt/image androidboot.usbconfigfs=true loop.max_part=7
BOARD_KERNEL_BASE := 0x80000000
BOARD_KERNEL_PAGESIZE := 2048
BOARD_KERNEL_OFFSET := 0x00008000
BOARD_RAMDISK_OFFSET := 0x02000000
BOARD_SECOND_OFFSET := 0x00f00000
BOARD_KERNEL_TAGS_OFFSET := 0x01e00000
BOARD_FLASH_BLOCK_SIZE := 131072 # (BOARD_KERNEL_PAGESIZE * 64)
BOARD_BOOTIMG_HEADER_VERSION := 1
TARGET_PREBUILT_KERNEL := $(DEVICE_PATH)/prebuilt/zImage-dtb
BOARD_PREBUILT_DTBOIMAGE := $(DEVICE_PATH)/prebuilt/dtbo.img
BOARD_INCLUDE_RECOVERY_DTBO := true
BOARD_MKBOOTIMG_ARGS += --ramdisk_offset $(BOARD_RAMDISK_OFFSET)
BOARD_MKBOOTIMG_ARGS += --tags_offset $(BOARD_KERNEL_TAGS_OFFSET)
BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOTIMG_HEADER_VERSION)
BOARD_CUSTOM_BOOTIMG_MK := $(DEVICE_PATH)/mkbootimg.mk
BOARD_KERNEL_IMAGE_NAME := Image.gz-dtb
#TARGET_KERNEL_ARCH := arm64
#TARGET_KERNEL_HEADER_ARCH := arm64
#TARGET_KERNEL_SOURCE := kernel/samsung/gto
#TARGET_KERNEL_CONFIG := gto_defconfig

do so

Thanks. I will have to do this tomorrow...am having repo issues....

gcrutchr · Sep 6, 2020

mehanik6 said:

Code:

# Kernel

do so[/QUOTE]

here is the output of build_kernel.sh:
arch/arm64/boot/dts/qcom/sdm429.dtb.reverse.dts: Warning (simple_bus_reg): Node /soc/qmi-tmd-devices missing or empty reg/ranges property
arch/arm64/boot/dts/qcom/sdm429.dtb.reverse.dts: Warning (simple_bus_reg): Node /soc/apc-mem-acc-regulator missing or empty reg/ranges property
arch/arm64/boot/dts/qcom/sdm429.dtb.reverse.dts: Warning (simple_bus_reg): Node /soc/dbu1 missing or empty reg/ranges property
arch/arm64/boot/dts/qcom/sdm429.dtb.reverse.dts: Warning (simple_bus_reg): Node /soc/qcom,camera-flash missing or empty reg/ranges property
arch/arm64/boot/dts/qcom/sdm429.dtb.reverse.dts: Warning (simple_bus_reg): Node /soc/audio_ext_clk_native missing or empty reg/ranges property
  CC      net/ipv4/tcp_westwood.mod.o
  LD [M]  drivers/char/rdbg.ko
  LD [M]  drivers/video/backlight/lcd.ko
  LD [M]  fs/efivarfs/efivarfs.ko
  LD [M]  net/bridge/br_netfilter.ko
  LD [M]  net/ipv4/tcp_htcp.ko
  LD [M]  net/ipv4/tcp_westwood.ko
  CAT     arch/arm64/boot/Image.gz-dtb
make[1]: Leaving directory '/home/gcrutchr/twrp/kernel/samsung/gto/out'
make: Leaving directory '/home/gcrutchr/twrp/kernel/samsung/gto'
create image file: out/dtbo.img...

here is output of mka recoveryimage:
[  8% 1153/13075] Prebuilt:  (/home/gc...hr/twrp/out/target/product/gto/kernel)
FAILED: /home/gcrutchr/twrp/out/target/product/gto/kernel 
/bin/bash -c "(rm -f /home/gcrutchr/twrp/out/target/product/gto/kernel ) && (cp \"\" \"/home/gcrutchr/twrp/out/target/product/gto/kernel\" )"
cp: cannot stat '': No such file or directory
[  8% 1160/13075] target  C++: libminu... bootable/recovery/minui/resources.cpp
ninja: build stopped: subcommand failed.
11:53:46 ninja failed with: exit status 1

#### failed to build some targets (01:01 (mm:ss)) ####

I attached the logfile for the kernel build

mehanik6 · Apr 6, 2013 34 4 0

gcrutchr said:
FAILED: /home/gcrutchr/twrp/out/target/product/gto/kernel
/bin/bash -c "(rm -f /home/gcrutchr/twrp/out/target/product/gto/kernel ) && (cp "" ern"/home/gcrutchr/twrp/out/target/product/gto/kernel" )"
cp: cannot stat '': No such file or directory
[ 8% 1160/13075] target C++: libminu... bootable/recovery/minui/resources.cpp
ninja: build stopped: subcommand failed.
11:53:46 ninja failed with: exit status 1

#### failed to build some targets (01:01 (mm:ss)) ####

- remove the kernel folder from the twrp sources (build the kernel separately)
- remove build_kernel.sh from twrp sources
- put the prebuilt folder in the twrp tree (/device/samsung/gto) https://forum.xda-developers.com/showpost.php?p=83434929&postcount=242
- fix BoardConfig.mk (/device/samsung/gto) https://forum.xda-developers.com/showpost.php?p=83436311&postcount=248
- mka recoveryimage

gcrutchr · Sep 6, 2020

mehanik6 said:
- remove the kernel folder from the twrp sources (build the kernel separately)
- remove build_kernel.sh from twrp sources
- put the prebuilt folder in the twrp tree (/device/samsung/gto) https://forum.xda-developers.com/showpost.php?p=83434929&postcount=242
- fix BoardConfig.mk (/device/samsung/gto) https://forum.xda-developers.com/showpost.php?p=83436311&postcount=248
- mka recoveryimage

Thank you very much! You have been a great help to me. I made the recovery.img.
Now I need to test it to make sure it is the same as the one you posted. If yes, then I will make the Skyhawk Recovery image
Again, thanks for all your help !!!!

Update: Made Skyhawk recovery - works great!!

gcrutchr · Sep 6, 2020 at 1:27 PM

Skyhawk recovery for SM-T295

I have made a Skyhawk recovery for our Tab A 8.0 (t295).
I give a lot of thanks to [email protected] for his help with getting a build for TWRP.
Once the TWRP build worked, I made the Skyhawk recovery.

I doubt if I will do much maintenance on this as I am not a TWRP developer.

Skyhawk recovery for SM-T295

To install:
Use TWRP Recovery Manager from playstore.
DO NOT try to install this with ODIN. It will fail, probably.

Tianhe · Sep 6, 2020 at 6:48 PM

gcrutchr said:
I have made a Skyhawk recovery for our Tab A 8.0 (t295).
I give a lot of thanks to [email protected] for his help with getting a build for TWRP.
Once the TWRP build worked, I made the Skyhawk recovery.

I doubt if I will do much maintenance on this as I am not a TWRP developer.

Skyhawk recovery for SM-T295

To install:
Use TWRP Recovery Manager from playstore.
DO NOT try to install this with ODIN. It will fail, probably.

Is it working fully ? I mean can it mount internal storage, backup/restore data etc. ?

In any case, thank you for your efforts !

cossak2007 · Sep 23, 2020 at 11:26 PM

T-290

Will the SkyHawk Recovery work on t-190's ?
Thanks

gcrutchr · Sep 24, 2020 at 2:22 AM

cossak2007 said:
Will the SkyHawk Recovery work on t-190's ?
Thanks

I do not know.
It has not been fully tested yet.

efakkawy98 · Sep 25, 2020 at 8:18 PM

Can someone please share patched boot image for XXU3BTFE

Thank you.

gcrutchr · Sep 26, 2020 at 3:05 AM

efakkawy98 said:
Can someone please share patched boot image for XXU3BTFE

Thank you.

Here is the link:
Root_T295XXU3BTFE_M20.4.tar

efakkawy98 · Sep 26, 2020 at 6:23 AM

gcrutchr said:
Here is the link:
Root_T295XXU3BTFE_M20.4.tar

I have tried several times with no luck, I keep getting secure check fail vbmeta:crying:

Here are the steps I followed:

1. Bootloader unlocked
2. Flash previousbootloader
3. Flash magisk_patched.tar - it fails here

Thanks

gcrutchr · Sep 26, 2020 at 7:00 AM

efakkawy98 said:
I have tried several times with no luck, I keep getting secure check fail vbmeta:crying:

Here are the steps I followed:

1. Bootloader unlocked
2. Flash previousbootloader
3. Flash magisk_patched.tar - it fails here

Thanks

Did you toggle OEM lock in settings?

SM-T295 - Finally rooted tablet!! (updated 19-May-2020)

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