Raw binary Image of linux

victorascroft at gmail.com victorascroft at gmail.com
Wed Mar 18 01:18:21 EDT 2015 

Hello,

On 15-03-17 11:42:01, chirag garg wrote:
> Hello sir,

You do not have to call me or anyone sir. We are probably of the same 
age. :p

> 
> 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
> ?

Try loading the uImage to 0x10800000 and the dtb blob at 0x12000000. 
Perhaps that will work. So now it becomes bootm 0x10800000 - 0x12000000?

If it doesn't so now this needs to be debug. Enable CONFIG_DEBUG_LL and 
CONFIG_EARLY_PRINTK options and see if you get some more debug messages. 

When I said check environment variables, I meant if there any any 
variables which the uboot for sabre might have predefined. It would be 
helpful to have a look.

- Sanchayan.

> 
> Regards
> 
> Chirag Garg
> IIT Madras , Rise Lab
> 
> On Mon, Mar 16, 2015 at 11:09 AM, <victorascroft at 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 at 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 at 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 at 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=3.14
> > > > > >
> > > > > > 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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