topic Re: Freescale kernel building in i.MX Processors

Freescale kernel building

robertmiddleton — Tue, 05 Jan 2016 15:07:55 GMT

I'm trying to build the latest 3.14 kernel from Freescale(Freescale/linux-fslc at 3.14-1.1.x-mx6 · GitHub ), but I'm having a problem building it. I'm trying to build the kernel for an IMX6. After cloning the repo, I do the following to try and build it:

make imx_v7_defconfig
make

However, the make process fails with the following error:

arch/arm/mm/built-in.o:(___ksymtab+v7_dma_map_area+0x0): multiple definition of `__ksymtab_v7_dma_map_area'

arch/arm/kernel/built-in.o:(___ksymtab+v7_dma_map_area+0x0): first defined here

arch/arm/mm/built-in.o:(___ksymtab+v7_dma_flush_range+0x0): multiple definition of `__ksymtab_v7_dma_flush_range'

arch/arm/kernel/built-in.o:(___ksymtab+v7_dma_flush_range+0x0): first defined here

arch/arm/mm/built-in.o:(___ksymtab+v7_dma_unmap_area+0x0): multiple definition of `__ksymtab_v7_dma_unmap_area'

arch/arm/kernel/built-in.o:(___ksymtab+v7_dma_unmap_area+0x0): first defined here

Makefile:831: recipe for target 'vmlinux' failed

What do I need to change in order for the kernel to link cleanly?

Re: Freescale kernel building

saurabh206 — Wed, 06 Jan 2016 04:55:19 GMT

You need to use

make ARCH=arm CROSS_COMPILE=/opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi- -j16 uImage LOADADDR=0x10008000

You can build corss_compile tool chain from "Task #7 - Create the toolchain "

Thanks

Saurabh

Re: Freescale kernel building

Yuri — Wed, 06 Jan 2016 05:30:28 GMT

Hello,

You may try the recent BSP L3.14.52.

http://www.nxp.com/webapp/Download?colCode=L3.14.52_1.1.0_LINUX_DOCS

Please follow recommendations of "Freescale_Yocto_Project_User's_Guide.pdf"

Have a great day,
Yuri

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Re: Freescale kernel building

marcocavallini — Tue, 26 Jan 2016 08:34:06 GMT

Please follow these steps:

Setup your toolchain environment. I use Yocto 'jethro' generated:

source /opt/poky/2.0-cortexa8hf/environment-setup-cortexa8hf-vfp-neon-poky-linux-gnueabi

then:

git clone https://github.com/Freescale/linux-fslc.git
cd linux-fslc
git checkout origin/3.14-1.1.x-mx6 -b 3.14-1.1.x-mx6
make imx_v7_defconfig
make uImage LOADADDR=0x10008000 (or make zImage LOADADDR=0x10008000)

I hope this helps.

Marco

Re: Freescale kernel building

fabio_estevam — Mon, 29 Feb 2016 22:32:24 GMT

I faced this same issue. This has been fixed in the '3.14-1.1.x-imx' branch (imx in the end, not mx6).