[INCOMPLETE HOW TO] Reconstruct Mi 4c kernel source

Ydraulikos · Mar 19, 2016 at 6:19 PM

If I compile the kernel how I can combine the zImage with ramdisk? Do you know the parameters of mkbootimg?

btw it would be nice to build a custom kernel with undervolt & other tweaks (from n5x, g4 etc)

ketut.kumajaya · Mar 19, 2016 at 11:52 PM

Ydraulikos said:
If I compile the kernel how I can combine the zImage with ramdisk? Do you know the parameters of mkbootimg?

btw it would be nice to build a custom kernel with undervolt & other tweaks (from n5x, g4 etc)

Too lazy to power on my laptop for now, I'll tell you later. Still trying to fix WiFi support, the same branch not compilable, the newer branch loaded but not working

I'll check bullhead kernel source.

ketut.kumajaya · Mar 20, 2016 at 8:20 AM

When I managed to fix WiFi support, I'll push my changes to github. You will find a commit how Xiaomi add them self as a copyright holder unnecessary :laugh:

ketut.kumajaya · Mar 20, 2016 at 1:02 PM

ketut.kumajaya said:
When I managed to fix WiFi support, I'll push my changes to github. You will find a commit how Xiaomi add them self as a copyright holder unnecessary :laugh:

I managed to fool MIUI, WiFi driver module get loaded and working :victory:

emfox · Mar 20, 2016 at 1:07 PM

ketut.kumajaya said:
I managed to fool MIUI, WiFi driver module get loaded and working :victory:

While I don't understand how xiaomi was fooled, I am very happy too :good:

ketut.kumajaya · Mar 20, 2016 at 1:33 PM

emfox said:
While I don't understand how xiaomi was fooled, I am very happy too :good:

I'll tell you via github. I used MIUI as a test bed because not too happy when known working CM is a closed source project here

I have no option for kernel. To be honest, I also don't want to open my changes to public but Linux kernel protected by the GPL :angel: A show-off attached :laugh:

ketut.kumajaya · Mar 20, 2016 at 3:46 PM

Just pushed kernel update to github, please check it https://github.com/kumajaya/android_kernel_xiaomi_msm8992/commits/libra-l-oss-kumajaya

ketut.kumajaya · Mar 20, 2016 at 4:09 PM

Ydraulikos said:
If I compile the kernel how I can combine the zImage with ramdisk? Do you know the parameters of mkbootimg?

btw it would be nice to build a custom kernel with undervolt & other tweaks (from n5x, g4 etc)

Code:

export KERNEL_OUT='/home/user/android/libra/kernel-out'
export KERNEL_BIN='/home/user/android/libra/kernel-bin'
mkdir -p ${KERNEL_BIN}
mkdir -p ${KERNEL_BIN}/modules
cp ${KERNEL_OUT}/arch/arm64/boot/Image ${KERNEL_BIN}
find ${KERNEL_OUT}/ -type f -name *.ko -exec ${CROSS_COMPILE}strip --strip-unneeded {} \;
find ${KERNEL_OUT}/ -type f -name *.ko -exec cp {} ${KERNEL_BIN}/modules \;
dtbToolCM -2 -o ${KERNEL_BIN}/dt.img -s 4096 -p ${KERNEL_OUT}/scripts/dtc/ \
${KERNEL_OUT}/arch/arm64/boot/dts/
mkbootimg --kernel ${KERNEL_BIN}/Image --ramdisk ${KERNEL_BIN}/ramdisk.gz \
--cmdline "console=ttyHSL0,115200,n8 androidboot.console=ttyHSL0 androidboot.hardware=qcom user_debug=31 msm_rtb.filter=0x37 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 boot_cpus=0-5 ramoops_memreserve=2M androidboot.selinux=permissive" \
--base 00000000 --pagesize 4096 --dt ${KERNEL_BIN}/dt.img --ramdisk_offset 02000000 \
--tags_offset 00000100 -o ${KERNEL_BIN}/boot.img

Stock unmodified ramdisk available at https://goo.gl/sLLLdb

Pikachu8119 · Mar 20, 2016 at 5:11 PM

so can we expect for modded kernels from you?

dexxa05 · Mar 20, 2016 at 6:58 PM

@ketut.kumajaya Can we use your kernel to compile CM13?

Thx

Ydraulikos · Mar 20, 2016 at 7:39 PM

Thanks for the script. I managed to build the kernel but I have an issue with DTBs.

Code:

DTB combiner:
  Input directory: '/devel/android_kernel_xiaomi_msm8992/arch/arm64/boot/dts/'
  Output file: '/home/user/libra/kernel-bin/dt.img'
Searching subdir: /devel/android_kernel_xiaomi_msm8992/arch/arm64/boot/dts/include/ ...
=> Found 0 unique DTB(s)

I used the mkbootimg tools from xiaolu here but I get:

Code:

C:\midev>fastboot boot boot.img
downloading 'boot.img'...
OKAY [  0.932s]
booting...
FAILED (remote: dtb not found)
finished. total time: 1.316s

Using the dt.img from CM12.1 device tree results in bootloop.
However your kernel is working!
Any ideas?

ketut.kumajaya · Mar 21, 2016 at 9:21 AM

@Ydraulikos You can try dtbToolCM, just uploaded it to https://goo.gl/sLLLdb, inside tools.zip

ketut.kumajaya · Mar 21, 2016 at 11:32 AM

No WiFi MAC issue anymore https://github.com/kumajaya/android...mmit/d3cbddf55dbc095cdc071ea4e8424a1c12269409 :victory:

Urik26 · Mar 21, 2016

Who can help me with a kernel compiling? I have Ubunu 12.04 (also tried 15.04), toolchain (aarch64 both 4.8, 4.9, 5.2 and so on) and ketut.kumajaya's sources (Thank you for your work). There are steps I follow in Terminal:
1. cd /home/my_name/android/kernel/
2. export ARCH=arm64 CROSS_COMPILE=/home/my_name/android/toolchain/aarch64-linux-android-4.9-master/bin/aarch64-linux-android-
3. make libra_user_defconfig
4. make menuconfig (save it and exit)
5. make -j8
So, after it appears this:

And the same is with all def_configs and kernel sources.

Just for understanding - "Ошибка" means "Error".

I hope you'll help me in kernel compiling. Thank you in advance!

ketut.kumajaya · Mar 21, 2016 at 1:10 PM

Urik26 said:
Who can help me with a kernel compiling? I have Ubunu 12.04 (also tried 15.04), toolchain (aarch64 both 4.8, 4.9, 5.2 and so on) and ketut.kumajaya's sources (Thank you for your work). There are steps I follow in Terminal:
1. cd /home/my_name/android/kernel/
2. export ARCH=arm64 CROSS_COMPILE=/home/my_name/android/toolchain/aarch64-linux-android-4.9-master/bin/aarch64-linux-android-
3. make libra_user_defconfig
4. make menuconfig (save it and exit)
5. make -j8
So, after it appears this:

[email protected]:~/android/kernel$make -j8
scripts/kconfig/conf --silentoldconfig Kconfig
warning: (PCI_MSM && AMD_IOMMU) selects PCI_MSI which has unmet direct dependencies (PCI && ARCH_SUPPORTS_MSI)
warning: (SND_SOC_APQ8074 && SND_SOC_MSM8992 && SND_SOC_MSM8994) selects SND_SOC_MSM_HDMI_CODEC_RX which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && FB_MSM_MDSS_HDMI_PANEL && (SND_SOC_MSM8974 || SND_SOC_APQ8084 || SND_SOC_MSM8994))
warning: (ARCH_MSM) selects DEVFREQ_GOV_MSM_BW_HWMON which has unmet direct dependencies (PM_DEVFREQ && (ARCH_MSM_KRAIT || ARCH_MSM_BIMC_BWMON))
warning: (PCI_MSM && AMD_IOMMU) selects PCI_MSI which has unmet direct dependencies (PCI && ARCH_SUPPORTS_MSI)
warning: (SND_SOC_APQ8074 && SND_SOC_MSM8992 && SND_SOC_MSM8994) selects SND_SOC_MSM_HDMI_CODEC_RX which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && FB_MSM_MDSS_HDMI_PANEL && (SND_SOC_MSM8974 || SND_SOC_APQ8084 || SND_SOC_MSM8994))
warning: (ARCH_MSM) selects DEVFREQ_GOV_MSM_BW_HWMON which has unmet direct dependencies (PM_DEVFREQ && (ARCH_MSM_KRAIT || ARCH_MSM_BIMC_BWMON))
WRAP arch/arm64/include/generated/asm/bugs.h
WRAP arch/arm64/include/generated/asm/checksum.h
WRAP arch/arm64/include/generated/asm/clkdev.h
WRAP arch/arm64/include/generated/asm/cputime.h
WRAP arch/arm64/include/generated/asm/current.h
WRAP arch/arm64/include/generated/asm/delay.h
WRAP arch/arm64/include/generated/asm/div64.h
WRAP arch/arm64/include/generated/asm/dma.h
WRAP arch/arm64/include/generated/asm/emergency-restart.h
WRAP arch/arm64/include/generated/asm/early_ioremap.h
WRAP arch/arm64/include/generated/asm/errno.h
WRAP arch/arm64/include/generated/asm/ftrace.h
WRAP arch/arm64/include/generated/asm/hw_irq.h
WRAP arch/arm64/include/generated/asm/ioctl.h
WRAP arch/arm64/include/generated/asm/ioctls.h
WRAP arch/arm64/include/generated/asm/ipcbuf.h
WRAP arch/arm64/include/generated/asm/irq_regs.h
WRAP arch/arm64/include/generated/asm/kdebug.h
WRAP arch/arm64/include/generated/asm/kmap_types.h
WRAP arch/arm64/include/generated/asm/kvm_para.h
WRAP arch/arm64/include/generated/asm/local.h
WRAP arch/arm64/include/generated/asm/local64.h
WRAP arch/arm64/include/generated/asm/mcs_spinlock.h
WRAP arch/arm64/include/generated/asm/mman.h
WRAP arch/arm64/include/generated/asm/msgbuf.h
WRAP arch/arm64/include/generated/asm/mutex.h
WRAP arch/arm64/include/generated/asm/pci.h
WRAP arch/arm64/include/generated/asm/poll.h
WRAP arch/arm64/include/generated/asm/resource.h
WRAP arch/arm64/include/generated/asm/scatterlist.h
WRAP arch/arm64/include/generated/asm/rwsem.h
WRAP arch/arm64/include/generated/asm/sections.h
WRAP arch/arm64/include/generated/asm/segment.h
WRAP arch/arm64/include/generated/asm/sembuf.h
WRAP arch/arm64/include/generated/asm/serial.h
WRAP arch/arm64/include/generated/asm/shmbuf.h
WRAP arch/arm64/include/generated/asm/simd.h
WRAP arch/arm64/include/generated/asm/sizes.h
WRAP arch/arm64/include/generated/asm/socket.h
WRAP arch/arm64/include/generated/asm/sockios.h
WRAP arch/arm64/include/generated/asm/swab.h
WRAP arch/arm64/include/generated/asm/switch_to.h
WRAP arch/arm64/include/generated/asm/termbits.h
WRAP arch/arm64/include/generated/asm/termios.h
WRAP arch/arm64/include/generated/asm/topology.h
WRAP arch/arm64/include/generated/asm/trace_clock.h
WRAP arch/arm64/include/generated/asm/types.h
WRAP arch/arm64/include/generated/asm/unaligned.h
WRAP arch/arm64/include/generated/asm/user.h
WRAP arch/arm64/include/generated/asm/vga.h
WRAP arch/arm64/include/generated/asm/xor.h
WRAP arch/arm64/include/generated/uapi/asm/kvm_para.h
CHK include/generated/uapi/linux/version.h
UPD include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
HOSTCC scripts/dtc/checks.o
HOSTCC scripts/genksyms/genksyms.o
CC scripts/mod/empty.o
scripts/mod/empty.c:1:0: warning: -fstack-protector not supported for this target [enabled by default]
error, forbidden warning: empty.c:1
make[2]: *** [scripts/mod/empty.o] Ошибка 1
make[1]: *** [scripts/mod] Ошибка 2
make[1]: *** Ожидание завершения заданий...
SHIPPED scripts/genksyms/lex.lex.c
SHIPPED scripts/genksyms/keywords.hash.c
SHIPPED scripts/genksyms/parse.tab.h
SHIPPED scripts/genksyms/parse.tab.c
HOSTCC scripts/genksyms/lex.lex.o
HOSTCC scripts/dtc/data.o
HOSTCC scripts/genksyms/parse.tab.o
SHIPPED scripts/dtc/dtc-lexer.lex.c
SHIPPED scripts/dtc/dtc-parser.tab.h
SHIPPED scripts/dtc/dtc-parser.tab.c
HOSTCC scripts/dtc/dtc.o
HOSTCC scripts/dtc/flattree.o
HOSTCC scripts/dtc/fstree.o
HOSTCC scripts/dtc/livetree.o
HOSTLD scripts/genksyms/genksyms
HOSTCC scripts/dtc/srcpos.o
HOSTCC scripts/dtc/treesource.o
HOSTCC scripts/dtc/util.o
HOSTCC scripts/dtc/dtc-lexer.lex.o
HOSTCC scripts/dtc/dtc-parser.tab.o
CC kernel/bounds.s
kernel/bounds.c:1:0: warning: -fstack-protector not supported for this target [enabled by default]
error, forbidden warning: bounds.c:1
make[1]: *** [kernel/bounds.s] Ошибка 1
make: *** [prepare0] Ошибка 2
make: *** Ожидание завершения заданий...
HOSTLD scripts/dtc/dtc
make: *** [scripts] Ошибка 2
[email protected]:~/android/kernel$

And the same is with all def_configs and kernel sources.

Just for understanding - "Ошибка" means "Error".

I hope you'll help me in kernel compiling. Thank you in advance!

How if you adapt page #1 instructions, under "How to build kernel outside Android source tree". Please always build the kernel outside the kernel source tree, in place compiling not recommended. Important commands from page #1 to make sure your environment free from host FLAGS:

Code:

export LDFLAGS=''
export CFLAGS=''

Urik26 · Aug 10, 2012 23 1 0

ketut.kumajaya said:
How if you adapt page #1 instructions, under "How to build kernel outside Android source tree". Please always build the kernel outside the kernel source tree, in place compiling not recommended. Important commands from page #1 to make sure your environment free from host FLAGS:

Code:

export LDFLAGS='' export CFLAGS=''

I checked "How to build kernel outside Android source tree" in Google, but there is only information about compiling kernel modules, but not kernel itself. Or I undestand something wrong?

ketut.kumajaya · Mar 21, 2016 at 1:29 PM

Urik26 said:
I checked "How to build kernel outside Android source tree" in Google, but there is only information about compiling kernel modules, but not kernel itself. Or I undestand something wrong?

Oh my god, I mean this thread page one.

Urik26 · Aug 10, 2012 23 1 0

Oh, just being stupid)) I will try, thank you!

---------- Post added at 07:08 PM ---------- Previous post was at 07:06 PM ----------

I've tried your instruction on the first page and here it is:

I used "git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9" toolchain.

ketut.kumajaya · Mar 21, 2016

I will create a new thread "How to build libra kernel from source". Everything just working here, both building process and the resulted build. Latest WiFi source have merged, I'll check if f2fs support also broken in MSM8992 branch.

dexxa05 · Mar 21, 2016 at 2:33 PM

ketut.kumajaya said:
I will create a new thread "How to build libra kernel from source". Everything just working here, both building process and the resulted build. Latest WiFi source have merged, I'll check if f2fs support also broken in MSM8992 branch.

Thx! It will help really want to compile the kernel myself.

[INCOMPLETE HOW TO] Reconstruct Mi 4c kernel source

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