Kernel failed to boot when add more drivers

Kernel failed to boot when add more drivers

[Martin Peevski]

     Hello! Can you, please, help me!

     I'm building Linux Kernel version 2.6.39 for at91sam9x5ek. When I 
want to add more drivers the U-boot is imposible to load the Kernel 
because CRC error. The size of the uImage is 2.38MB. When I remove some 
driversand uImage become around 2.31MB the Kernel is loading 
successfully. Do you know what is the reason, I want to use more drivers?

     Many thanks!
     Martin Peevski.

Kernel failed to boot when add more drivers

[Bryan Evenson]

Martin,

Whenever I've had similar issues it's because I have a U-Boot environment
variable that assumes the kernel is smaller than it is.  So U-Boot may not
be loading the entire kernel which would cause your CRC errors.  Could you
you provide the following information:

How are you loading the kernel?  From NAND flash, SD card, TFTP boot?

Could you show us your U-Boot environment variables (result of "printenv"
U-Boot command)?

Thanks,
Bryan Evenson


> -----Original Message-----
> From: linux-arm-kernel-bounces at lists.infradead.org [mailto:linux-arm-
> kernel-bounces at lists.infradead.org] On Behalf Of Martin Peevski
> Sent: Wednesday, December 12, 2012 8:08 AM
> To: linux-arm-kernel at lists.infradead.org
> Subject: Kernel failed to boot when add more drivers
> 
>      Hello! Can you, please, help me!
> 
>      I'm building Linux Kernel version 2.6.39 for at91sam9x5ek. When I
> want to add more drivers the U-boot is imposible to load the Kernel
> because CRC error. The size of the uImage is 2.38MB. When I remove some
> driversand uImage become around 2.31MB the Kernel is loading
> successfully. Do you know what is the reason, I want to use more
> drivers?
> 
>      Many thanks!
>      Martin Peevski.
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Kernel failed to boot when add more drivers

[Martin Peevski]

On 12/12/12 15:53, Bryan Evenson wrote:
> Martin,
>
> Whenever I've had similar issues it's because I have a U-Boot environment
> variable that assumes the kernel is smaller than it is.  So U-Boot may not
> be loading the entire kernel which would cause your CRC errors.  Could you
> you provide the following information:
>
> How are you loading the kernel?  From NAND flash, SD card, TFTP boot?

I'm loading the Kernel from NAND

> Could you show us your U-Boot environment variables (result of "printenv"
> U-Boot command)?

U-Boot> printenv
bootargs=mem=128M console=ttyS0,115200 
mtdparts=atmel_nand:8M(bootstrap/uboot/kernel)ro,-(rootfs) 
root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs
bootcmd=nand read.jffs2 0x22000000 0x200000 0x250000; bootm 0x22000000
bootdelay=1
baudrate=115200
ethact=macb0

Environment size: 277/131067 bytes
U-Boot>


> Thanks,
> Bryan Evenson
>
>
>> -----Original Message-----
>> From: linux-arm-kernel-bounces at lists.infradead.org [mailto:linux-arm-
>> kernel-bounces at lists.infradead.org] On Behalf Of Martin Peevski
>> Sent: Wednesday, December 12, 2012 8:08 AM
>> To: linux-arm-kernel at lists.infradead.org
>> Subject: Kernel failed to boot when add more drivers
>>
>>       Hello! Can you, please, help me!
>>
>>       I'm building Linux Kernel version 2.6.39 for at91sam9x5ek. When I
>> want to add more drivers the U-boot is imposible to load the Kernel
>> because CRC error. The size of the uImage is 2.38MB. When I remove some
>> driversand uImage become around 2.31MB the Kernel is loading
>> successfully. Do you know what is the reason, I want to use more
>> drivers?
>>
>>       Many thanks!
>>       Martin Peevski.
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel at lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Kernel failed to boot when add more drivers

[Bryan Evenson]

Martin,

Answers below.

Regards,
Bryan Evenson

> -----Original Message-----
> From: Martin Peevski [mailto:martin at ronetix.at]
> Sent: Wednesday, December 12, 2012 9:02 AM
> To: Bryan Evenson
> Cc: linux-arm-kernel at lists.infradead.org
> Subject: Re: Kernel failed to boot when add more drivers
> 
> On 12/12/12 15:53, Bryan Evenson wrote:
> > Martin,
> >
> > Whenever I've had similar issues it's because I have a U-Boot
> > environment variable that assumes the kernel is smaller than it is.
> > So U-Boot may not be loading the entire kernel which would cause your
> > CRC errors.  Could you you provide the following information:
> >
> > How are you loading the kernel?  From NAND flash, SD card, TFTP boot?
> 
> I'm loading the Kernel from NAND
> 
> > Could you show us your U-Boot environment variables (result of
> "printenv"
> > U-Boot command)?
> 
> U-Boot> printenv
> bootargs=mem=128M console=ttyS0,115200
> mtdparts=atmel_nand:8M(bootstrap/uboot/kernel)ro,-(rootfs)
> root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs
> bootcmd=nand read.jffs2 0x22000000 0x200000 0x250000; bootm 0x22000000
> bootdelay=1
> baudrate=115200
> ethact=macb0
> 
> Environment size: 277/131067 bytes
> U-Boot>

The bootcmd is set to read 0x250000 bytes from NAND flash for the kernel,
Which is about 2.31 MB.  Change the bootcmd to read as follows:

bootcmd=nand read.jffs2 0x22000000 0x200000 0x300000; bootm 0x22000000

then you should be good with kernel sizes up to 3 MB.  Remember to adjust
as needed based upon the size of your kernel.

> 
> 
> > Thanks,
> > Bryan Evenson
> >
> >
> >> -----Original Message-----
> >> From: linux-arm-kernel-bounces at lists.infradead.org [mailto:linux-
> arm-
> >> kernel-bounces at lists.infradead.org] On Behalf Of Martin Peevski
> >> Sent: Wednesday, December 12, 2012 8:08 AM
> >> To: linux-arm-kernel at lists.infradead.org
> >> Subject: Kernel failed to boot when add more drivers
> >>
> >>       Hello! Can you, please, help me!
> >>
> >>       I'm building Linux Kernel version 2.6.39 for at91sam9x5ek.
> When
> >> I want to add more drivers the U-boot is imposible to load the
> Kernel
> >> because CRC error. The size of the uImage is 2.38MB. When I remove
> >> some driversand uImage become around 2.31MB the Kernel is loading
> >> successfully. Do you know what is the reason, I want to use more
> >> drivers?
> >>
> >>       Many thanks!
> >>       Martin Peevski.
> >>
> >> _______________________________________________
> >> linux-arm-kernel mailing list
> >> linux-arm-kernel at lists.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel