From: Philippe Leduc <ledphilippe@gmail.com>
To: Holger Schurig <holgerschurig@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: bootm crash - bad uimage?
Date: Fri, 26 Feb 2016 10:22:52 +0100 [thread overview]
Message-ID: <CABQt-UknDkU-H+QoRO_=C5EqdUm=r4CL7xXtR2wZe63rH46YiA@mail.gmail.com> (raw)
In-Reply-To: <CABQt-U=trcYcMu-uxmR-nMkDTu_te54enJZa8X-d1oN0y9aO5A@mail.gmail.com>
Hi,
I managed to boot a 'raw' image. It is quite straightforward in fact.
Here is what I do:
addpart /dev/mem 0x10000000@0x10020000(sys)
uncompress raw.boot /dev/mem.sys
go 0x10020000
Thank you for your help :)
--
Philippe LEDUC
ledphilippe@gmail.com
2016-02-25 10:50 GMT+01:00 Philippe Leduc <ledphilippe@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@gmail.com
>
>
> 2016-02-25 10:30 GMT+01:00 Holger Schurig <holgerschurig@gmail.com>:
>> Philippe Leduc <ledphilippe@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.
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prev parent reply other threads:[~2016-02-26 9:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-22 15:31 Philippe Leduc
2016-02-23 8:05 ` Sascha Hauer
2016-02-23 12:00 ` Philippe Leduc
2016-02-25 9:30 ` Holger Schurig
2016-02-25 9:50 ` Philippe Leduc
2016-02-26 9:22 ` Philippe Leduc [this message]
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