bootm crash - bad uimage?

[Philippe Leduc]

Hi,

I managed to boot a 'raw' image. It is quite straightforward in fact.
Here is what I do:

addpart /dev/mem 0x10000000 at 0x10020000(sys)
uncompress raw.boot /dev/mem.sys
go 0x10020000

Thank you for your help :)

--
Philippe LEDUC
ledphilippe at gmail.com


2016-02-25 10:50 GMT+01:00 Philippe Leduc <ledphilippe at gmail.com>:
> Hi,
>
>> So if you don't have an initrd, do you need uImage at all? You can boot
> a bootable image directly
> Well, I do it this way because it was working I guess^^' but I tink
> your proposition is the right think to do!
>
> Thank you for the tip and the details, I'll check that and I'll give
> you a feedback ASAP :)
>
> Best regards,
>
> --
> Philippe LEDUC
> ledphilippe at gmail.com
>
>
> 2016-02-25 10:30 GMT+01:00 Holger Schurig <holgerschurig at gmail.com>:
>> Philippe Leduc <ledphilippe at gmail.com> writes:
>>
>>> Note: I am using mkimage to create bootable image of a real-time OS
>>> (PikeOS). There is no initrd or dtc at this step for now: I guess it
>>> is like loading an old Linux kernel without userspace.
>>
>> So if you don't have an initrd, do you need uImage at all? You can boot
>> a bootable image directly
>>
>> I use Linux without an initrd and don't bother with an uImage at all. I
>> have my kernel on the SD-CARD or eMMC in /boot/vmlinuz, just like on any
>> other (x86) Linux box.
>>
>> Here is my env/boot/emmc script. I use "boot", not "bootm", but AFAIK boot uses
>> bootm under the hood.
>>
>>    global linux.bootargs.dyn.root="root=/dev/mmcblk0p${global.boot.partition} rootwait ro"
>>    global bootm.image=/emmc/boot/vmlinuz
>>    detect mmc3
>>    mkdir -p /emmc
>>    mount /dev/mmc3.0 /emmc
>>
>> I have similar scripts for SD-Card and USB.
>>
>>
>> The kernel is installed using the normal Linux mechanism:
>>
>> make -C ${KERNEL_DIR} ARCH=arm INSTALL_PATH=${IMAGE_DIR}/boot zinstall
>>
>> maybe PikeOS has something equivalent. The result is:
>>
>> $ file image/boot/vmlinuz-4.4.2
>> image/boot/vmlinuz-4.4.2: Linux kernel ARM boot executable zImage (little-endian)
>>
>>
>>
>> As you see, I boot directly into the vmlinuz ... and I don't use
>> Barebox' CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW, too.