i.MX6Q Sabre Lite Kernel boot Problem

youneschalabi — Mon, 17 Jun 2013 14:16:34 GMT

Hi,

I'm trying to install xenomai-2.6.2.1 on the i.MX6Q Sabre Lite.

Using U-boot-mx6q-sabrelite.bin and the rootfs.ext2 from the L3.0.35_4.0.0_130424_images_MX6 directory.

The kernel used is rel_imx_3.0.15_12.03.00, and after patching it with xenomai-2.6.2.1 following these steps :

1- Applying xenomai-2.6.2.1/ksrc/arch/arm/patches/mxc/adeos-ipipe-3.0.36-arm-1.18-11-pre.patch

2- Applying xenomai-2.6.2.1/ksrc/arch/arm/patches/adeos-ipipe-3.0.36-arm-1.18-11.patch

3- Applying xenomai-2.6.2.1/ksrc/arch/arm/patches/mxc/adeos-ipipe-3.0.36-arm-1.18-11-post.patch

4- xenomai-2.6.2.1/scripts/prepare-kernel.sh --arch=arm --adeos=$xenomai_root/ksrc/arch/arm/patches/adeos-ipipe-3.0.36-arm-1.18-11.patch --linux=rel_imx_3.0.15_12.03.00

5- make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- O=$build_root/linux imx6_defconfig

6- make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- O=$build_root/linux bzImage modules

7- xenomai-2.6.2.1/configure CFLAGS="-march=armv7-a -mfpu=vfp3" FDFLAGS="-march=armv7-a -mfpu=vfp3" --build=i686-pc-linux-gnu --host=arm-none-linux-gnueabi

8- make DESTDIR=$staging_dir install

Then putting the build_root/linux/arch/arm/boot/uImage | System.map | modules.builtin | modules.order | Module.symvers ==> to /media/boot

But when booting the target the kernel doesn't start and have this display :

mmc1 is current device

MMC read: dev # 1, block # 2048, count 8192 ... 8192 blocks read: OK

## Booting kernel from Legacy Image at 10800000 ...

Image Name: Linux-$ (3.0.15_12.03.00)

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 3813344 Bytes = 3.6 MB

Load Address: 10800000

Entry Point: 10800000

Verifying Checksum ... OK

XIP Kernel Image ... OK

Starting kernel ...

"Stops here"

Any help or idea is welcome

Re: i.MX6Q Sabre Lite Kernel boot Problem

youneschalabi — Tue, 18 Jun 2013 09:38:42 GMT

Hi,

I want to install xenomai on the i.MX6Q Sabre Lite board, for this I followed differents strategies but still not able to have xenomai on the target.

1- linux-3.5.7 vs xenomai-2.6.2.1 vs ipipe-core-3.5.7-arm-3.patch :

Using the installation procedure for ARM from : www.xenomai.org/documentation/xenomai-2.6/html/README.INSTALL/

The problem with this strategy is that I hadn't a rootfs to boot the target, so I took a different strategy.

HOW CAN I HAVE A ROOTFS TO BOOT THE TARGET WITH THE COMPILED SOURCES ?

2- Using the L3.0.35_4.0.0_130424 Freescale Release I built LTIB and by the way a rootfs, an uImage and a u-boot.bin which work correctly on the target.

Once having the rootfs I wanted to build the kernel patching it with xenomai and using the previous rootfs (LTIB)

PATCHING FAILED

3- I tried to patch the linux-3.0.35 with : adeos-ipipe-3.0.36-arm-1.18-11-pre.patch | adeos-ipipe-3.0.36-arm-1.18-11.patch | adeos-ipipe-3.0.36-arm-1.18-11-post.patch

But I had so many rejects, that why I prefered to use the rel_imx_3.0.15_12.03.00 and it's advised in : xenomai-2.6.2.1/ksrc/arch/arm/patches/README

Doing the same procedure as for linux-3.5.7, I had an uImage that I loaded on the µ-SD with the rootfs and u-boot either with the generated files from LTIB or the L3.0.35_4.0.0_130424_images_MX6

THE KERNEL LAUNCH BUT DOESN'T START :