Hi,
I really need the cp210x.ko module, but I couldn't successfully build it properly for my Iconia A500 with 3.2.1 and 2.6.36.3+ kernel.. I get the following when I tried insmod my cp210x.ko build using ubuntu cross compiler approach:
cp210x: version magic '2.6.36.3+ preempt mod_unload ARMv5 ' should be '2.6.36.3+ SMP preempt mod_unload ARMv7 '
A little search showed that I need to build it in ARMv7, and need to set the kernel config to build SMP kernel. In this thread I saw a few modules offered but couldn't post reply as a new xda-developers user, so I post here. My A500 has already been rooted via the su (version 3) method posted few days ago.
Please help me build the cp201x.ko module - I am kinda stuck..
Bill
Bill,
Might I suggest you look at loading one of the many custom ROM's that will have what you want? If you are rooted, then install CWM (ACER Recovery from the marketplace) which should allow you to load custom ROM's. In order to load the cp201x.ko module you'd have to recompile the kernel and people doing this type of work normally are building custom ROM's.
Anyway, just my 2ยข
Thanks for the advice. I am testing Thor ROM at the moment. Cool..
From what I can read and see within various ROMs /system/lib/modules, very few (out of total possible) kernel modules made it to these custom ROMs - mostly to get game controller to work, extra filesystems, or networking protocols. USB-to-serial modules are rare and certainly my search didn't turn up cp210x.
Cross-compiling the kernel source on Gentoo is mentioned to be better supported then ubuntu, due to its crossdev toolkit, as I'm trying to figure out how to specify target ARMv7 instead of ARMv5 I'm defaulting to when cross compiling from Ubuntu's arm-linux-gnueabi-*
I'm wondering if various nice ROM cooks have releases of their modified kernel source - or might be willing to help me build the just the cp210x as a .ko module, e.g. in the .config, "CONFIG_USB_SERIAL_CP210X=m" - I've found a post few months ago where a successful build and insertion of cp210x module was done but he had some problems when initiating communication on it - I fear the worst but hope for the best, and would like to try that myself as I've successfully talked to my device through the cp210x module on Linux.
Or, if any tips on how to build kernel (just the modules really) properly e.g. As Thor's ROM version number hints at need for some custom and virtualized build environment, I'm looking for the quick and dirty solution if cooking ROMs/kernel/ko's has steep learning curve..
Any help much appreciated!
Bill
It looks like I was speeding down the the wrong track last few days
Apparently the /proc/config.z copied off the a500 device was missing something - and how strange that is - so I had to enable SMP and choose Tegra 2 ARM processor using "make menuconfig" to get the vermagic on the build module (e.g. modinfo after successful make modules) to show ARMv7 and SMP, build from my Ubuntu cross-compiling setup. I haven't tested this new cp210x.ko on a500 yet (as it's currently running one of the customized ROMs that has different EXTRAVERSION/vermagic to the stock Acer kernel source version 2.6.36.3 that I'm based on.
I think it'd be really wonderful if various Android kernel and kernel module makers release their kernel config, sync'ed to each ROM or kernel release, so people like me may independently build special purpose kernel modules with more efficiency and accuracy (to target their customized kernel), and we can recontribute back to to a growing list of tested and working modules for corresponding devices.
Bill
Hmm... Silly. It looks like Thor's ROM already has cp210x build-in, not as a loadable module but compiled in. My device is reported to attach to ttyUSB0! How nice
Thanks!
Bill
For those who are interested, the cp210x.ko module build using latest mentioned approach, e.g. modified kernel config.z, generate module that appear to insert correctly into lightspeed and taboonay roms (neither has this USB-to-serial module) - with a little modification of the EXTRAVERSION variable in the Makefile.
Bill
CP210x and GT-P7500
Has anyone got CP210x module working with Samsung Tab GT-P7500? My problem is that the connected USB-device doesn't create node dev/ttyUSB*. I have spent lot of time trying to figure this one out.
I have tried 1) Manually compiling the linux kernel that has cp210x support as a module. After compiling the module I tried insmoding the cp210x.ko to a running kernel, but even though it seemed to load and unload all right, it did not give me the wanted results. It does not create device node /dev/ttyUSB*. I have also tried modifying ueventd.rc for adding this row, but I am guessing it is only relevant for permissions after the node is created.
Also 2) loading cyanogenmod 10 (which should have cp210x support) to tablet but it doesnot create the desired /dev/ttyUSB* node. I can see device file under dev/bus/usb/001/ but the node does not exist.
I am going to try making needed files for building custom kernel and inserting to tablet. However, I have 0 experience on this, I think it can be tough one.
Any help would be welcome, thanks.
Hi,
I am new with custom ROM and Android kernel things.
I successfully boot my phone with my kernel compiled from source with Google toolchain. And someone suggested to me to use Linaro toolchain.
Then I went through this page https://android-build.linaro.org/ to get some idea, seems none on Mako.
Any suggestion?
I am using arm-linux-androideabi-4.6 tool chain now for kernel compiling.
I am porting OmniROM to UrBetter s702 devices (Hyundai T7s/T7) using the Mixtile Garage board (mixtile.com) as a reference design. The CPU is Exynos4412.
The Mixtile Garage board comes with Linux kernel 3.0.15 and I am trying to update to 3.0.64 using the smdk4412 kernel source tree from Omni.
After creating the necessary mach-mixtile4x12.c file on arch/arm/mach-exynos (using mach-smdk4x12.c as a reference and adapting it, it compiles but on boot is panicking on s3cfb_clk_on: http://paste.omnirom.org/view/0d0fd2ec
The modified kernel tree is here: https://github.com/Frontier314/kernel_smdk4x12
The kernel source is compiled with GCC arm-eabi-4.7; gcc-arm-eabi-4.4.3 has the same problem so it should be something in the source tree.
Any ideas on how to fix this?
Many thanks in advance.
Hello guys,
My kernel ( KTmanta) is compiled by myselif suing a a15 optimized toolchain. Boots, working nice, however, any build with 4.8, 4.9, will stay at loading screen forever.
Any one can help me out , or might know the source of the problem?? I used once adb bugreport but haven't found interessting stuff(or at least I think)
Thank you.
Suggestion: have you tried building the kernel with another (prebuilt) toolchain, that includes GCC 4.8, 4.9? Maybe you missed something?
Search in forum "JustArchi's ArchiDroid Optimizations" (sorry, I cannot post links).
In that thread there are some patches for fix not booting kernel with gcc 4.8.
I have tried the tutorials that are available on XDA, but it looks like this kernel is unable to be built outside of an Android project, but maybe I am doing something wrong.
How does one actually build the kernel that is provide by Lenovo. Is it possible to build the kernel by itself using the source provided by Lenovo?
.
The kernel source is here:
https://pcsupport.lenovo.com/us/en/...ntent=20190613_20190613184825&linkId=68972849