Failed to build the kernel 4.9

[surendradhobale]

Hello All,

      I have downloaded the rel kernel 4.9.x from the freescale git http://git.freescale.com/git/cgit.cgi/imx/linux-imx.git/ 

http://git.freescale.com/git/cgit.cgi/imx/linux-imx.git/tag/?id=rel_imx_4.9.x_1.0.0_ga

I am looking to use the 4.9.x kernel which is used by freescale for the releases.

I have downloaded the rel_imx_4.9.x_1.0.0_ga.tar.gz and started for thecompile using the buildroot and indivisual kernel component but hetting the following compilation errors,

 UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
arch/arm/mach-imx/built-in.o: In function `init_mmdc_lpddr2_settings':
platform-imx-dma.c:(.text+0x6954): undefined reference to `imx6sll_lpddr2_freq_change'
arch/arm/mach-imx/built-in.o: In function `imx6ul_cpuidle_init':
platform-imx-dma.c:(.init.text+0xc7c): undefined reference to `imx6ull_low_power_idle'
platform-imx-dma.c:(.init.text+0xc80): undefined reference to `mx6ull_lpm_wfi_start'
platform-imx-dma.c:(.init.text+0xc84): undefined reference to `mx6ull_lpm_wfi_end'
arch/arm/mach-imx/built-in.o: In function `imx6sl_init_late':
platform-imx-dma.c:(.init.text+0x2098): undefined reference to `imx6sll_cpuidle_init'
make: *** [vmlinux] Error 1
Done
imx6@imx6-virtual-machine:~/projects/src/rel_imx_4.9.x_1.0.0_ga$

Is anyone already faced same problem? How to resolve the errors?

Regards,

Surendra

[Yuri]

Hello,

   You may try using the i.MX Yocto Project BSP.

https://www.nxp.com/webapp/Download?colCode=L4.9.11_1.0.0_LINUX_DOCS 

i.MX 6 / i.MX 7 Series Software and Development Tool|NXP 

Have a great day,
Yuri

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[surendradhobale]

Hello Yuri,

      Thanks for your help. I had gone through the links, but I am looking to use buildroot enviornment for my imx6ul based project.

So I am looking indivisual package of the kernel 4.9.11 which is used in the yocto project.

So which kernel i need to download from the freescale repo? I was trying to download http://git.freescale.com/git/cgit.cgi/imx/linux-imx.git/tag/?id=rel_imx_4.9.x_1.0.0_ga

So getting the problems . Fabio provide the one solution , let me try same.

Please confirm, is this official release of the kernel of freescale? so that i can use it.

[Yuri]

Hello,

   NXP official BSP is based on the same kernel as the freescale git provides. 

Regards,

Yuri.

[fabio_estevam · Accepted solution]

Hi Surendra,

Try using the imx_v7_defconfig:

make  imx_v7_defconfig

make

It should build a zImage without error.

Regards,

Fabio Estevam

[ivanefremov]

Hi, Fabio,

I was faced with the same problem and I've tried to use imx_v7_defconfig, built of zImage was succesful.

But when I loaded zImage and modules into my i.MX6 Sabre Lite board, I saw only "Starting kernel ..." and that's all.

I've tried also to specify in make LOADADDR = 0x10008000 (https://community.nxp.com/docs/DOC-100847#jive_content_id_2__Choose_which_branch_will_you_use) and to rebuild everything but this didn't solve the problem.

How to solve this problem?

Regards,

Ivan

[surendradhobale]

Hello Fabio,

   Thanks. Your comments are always helpful to me. I have used the imx_v7_defconfig and able to compile the kernel.

But when i saw the defconfig it doesnot have IMX6UL support . It has imx6ull CONFIG_SOC_IMX6ULL=y cofiguration.

Is this defconfig support for the imx6ul based controllers? or i need to use different defconfig?

Thanks

Surendra

[fabio_estevam]

Hi Surendra,

If you do:

make imx_v7_defconfig

The open the generated .config file you will see:

CONFIG_SOC_IMX6UL=y
CONFIG_SOC_IMX6ULL=y

So i.MX6UL is supported by default.

Regards,

Fabio Estevam