Hello sir, I changed my uboot version to 2014.07 and tried the following commands on the board. u-bbot> mmc dev 1 u-boot>fatload mmc 1:1 0x11000000 imx6q-sabresd.dtb u-boot>fatload mmc 1:1 0x12000000 uImage u-boot>bootm 0x12000000 - 0x11000000 I got the following output: ## Booting kernel from Legacy Image at 12000000 ... Image Name: Linux-3.18.4 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 5445640 Bytes = 5.2 MiB Load Address: 10001000 Entry Point: 10001000 Verifying Checksum ... OK ## Flattened Device Tree blob at 11000000 Booting using the fdt blob at 0x11000000 Loading Kernel Image ... OK Loading Device Tree to 4f33f000, end 4f34a5ac ... OK Starting kernel ... So what could be the reason behind this ? And as you said in previous mail to check environment variable ? which variable should i check to debug this ? Regards Chirag Garg IIT Madras , Rise Lab On Mon, Mar 16, 2015 at 11:09 AM, <victorascroft@gmail.com> wrote:
Hello,
On 15-03-16 09:59:33, chirag garg wrote:
Hi,
On Mon, Mar 16, 2015 at 9:45 AM, <victorascroft@gmail.com> wrote:
Hello,
On 15-03-16 09:33:21, chirag garg wrote:
Hello ,
I perform the following steps to run linux kernel on imx6:
Download 3.18 kernel from www.kernel.org Make steps: make CROSSarm-linux-gnueabi- ARCH=arm imx_v6_v7_defconfig make CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm uImage LOADADDR=10001000
cp linux-3.18.4/arch/arm/boot/uImage Sd_card
So you copied the kernel image to SD card.
Run uImage on the imx6 board...
Can you provide some more information on this point? When you copied the uImage to SD card, did you do something else to perhaps update the uImage on the module, or is the module setup to boot from SD card? And what about the device tree blob? Did you have a look at the uboot environment variables?
I perform the following steps on imx6 board: mmc dev 1 fatload mmc 1:1 0x10800000 uImage bootm 10800000
I havn't use device tree blob to run this image.
Device tree will be absolutely required. You will probably need to set the uboot environment variables correctly. Newer kernels use the information from device tree to set things up.
You probably need something like this
u-boot>tftpboot 0x11000000 imx6q-sabresd.dtb u-boot>tftpboot 0x12000000 uImage u-boot>bootm 0x12000000 - 0x11000000
Have a look here. Also what is your uboot version? Perhaps you will have to upgrade your uboot as well. https://community.freescale.com/thread/313457
What was the earlier kernel version the board was booting with?
Earlier, I used the following linux kernel:
http://boundarydevices.com/cross-compile-i-mx6-kernel-using-ltib-toolchain/
which was successfully booting. Kernel version is 3.0.35.
Ancient kernel that used board files and not device trees.
- Sanchayan.
Output :
## Booting kernel from Legacy Image at 10800000 ... Image Name: Linux-3.18.4 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 5445640 Bytes = 5.2 MB Load Address: 10001000 Entry Point: 10001000 Verifying Checksum ... OK Loading Kernel Image ... OK OK
Starting kernel ...
what could be the problem in this ? why Is this kernel not able
start on
imx6 platform ?
That output is on the serial debug console? Is the console parameter in uboot set appropriately to what the kernel expects?
- Sanchayan.
Thanks in advance, Regards,
Chirag Garg IIT Madras , Rise Lab
On Mon, Mar 9, 2015 at 11:01 PM, <victorascroft@gmail.com> wrote:
Hello,
On 15-03-09 21:53:34, chirag garg wrote:
Hello,
On Mon, Mar 9, 2015 at 9:01 PM, <victorascroft@gmail.com> wrote:
Hello,
On 15-03-09 11:20:55, chirag garg wrote:
Hi all,
I am new to the linux kernel source code. I want to compile
linux
source
code for imx6 ARM based platform. I want to generate raw binary image (.bin file) and .dtb file. Can any one help me in this.?
Which iMX6 platform is this? Depending on the platform, it would be as simple as doing make imx_v6_v7_defconfig and then using the correct dtb for the platform. Boards like Nitrogen, Sabre or Wandaboard should boot easily with the recent kernels.
I am using freescale imx6 quad core saberlite board. Available on the freescale site
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX6Q
Where should be this dtb available according to the board. I am
trying to
boot 3.14 linux kernel.
The DTS files for all ARM boards are available in the following directory
http://lxr.free-electrons.com/source/arch/arm/boot/dts/?v=3.14
http://lxr.free-electrons.com/source/arch/arm/configs/imx_v6_v7_defconfig?v=...
imx_v6_v7_defconfig is the config file for imx platform.
-Regards, Sanchayan.
Do you have a custom board or one of those easily available
development
platforms?
Board is easily available in the market.
- Regards, Sanchayan..
Thanks in advance Regards
Chirag Garg IIT Madras , Rise Lab
Regards Chirag Garg IIT Madras , Rise Lab
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