[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Dwi Sasongko Supriyadi]

Hello All,

I found issue when trying to load buildroot images on Qemu. Following is my
configuration:

1. Buildroot configured with make qemu_arm_versatile_defconfig
2. Using uClibc toolchain
3. rootfs.cpio, initramfs of linux kernel

Basically, I just did: make qemu_arm_versatile_defconfig; make then use the
resulting images available under output/images

I run qemu with following command:

qemu-system-arm -M versatilepb -m 128M -kernel output/images/zImage -initrd
output/images/rootfs.cpio.gz -append "root=/dev/ram rdinit=/bin/sh"

Qemu launched but there is nothing shown.

Then I tried another trick by building linux kernel inside
output/build/linux-2.6.36 with CROSS_COMPILE parameter pointed to Code
Sourcery toolchain and I found the very same result. Qemu did not show
anything.

I changed linux kernel version from buildroot menuconfig with 2.6.27.58,
then configured buildroot with qemu_arm_versatile_defconfig following with
make, then Qemu can load the kernel.

Has anyone experienced this kind of issue?

Thanks in advance,
DWI


-- 
Good software can't be measured by `wc -l software.c`
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[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Peter Korsgaard]

>>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:

 Dwi> Hello All,
 Dwi> I found issue when trying to load buildroot images on Qemu. Following is my
 Dwi> configuration:

 Dwi> 1. Buildroot configured with make qemu_arm_versatile_defconfig
 Dwi> 2. Using uClibc toolchain
 Dwi> 3. rootfs.cpio, initramfs of linux kernel

 Dwi> Basically, I just did: make qemu_arm_versatile_defconfig; make then use the
 Dwi> resulting images available under output/images

 Dwi> I run qemu with following command:

 Dwi> qemu-system-arm -M versatilepb -m 128M -kernel output/images/zImage -initrd
 Dwi> output/images/rootfs.cpio.gz -append "root=/dev/ram rdinit=/bin/sh"

 Dwi> Qemu launched but there is nothing shown.

Odd, I've using the versatile config pretty often here. I do configure
it slightly differently, as I normally don't care about graphics output
- So I use the serial output:

qemu-system-arm -M versatilepb -kernel output/images/zImage -append
   'console=ttyAMA0,115200 root=/dev/sda' -nographic -net nic -net user
   -hda output/images/rootfs.ext2

I've tweaked the versatile config a bit in git since the 2011.02
release though (enabled getty on serial port).

Perhaps you could give the default versatile config in git a try before
changing to initramfs?

-- 
Bye, Peter Korsgaard

[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Dwi Sasongko Supriyadi]

On Tue, Apr 26, 2011 at 4:46 PM, Peter Korsgaard <jacmet@uclibc.org> wrote:

> >>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:
>
>  Dwi> Hello All,
>  Dwi> I found issue when trying to load buildroot images on Qemu. Following
> is my
>  Dwi> configuration:
>
>  Dwi> 1. Buildroot configured with make qemu_arm_versatile_defconfig
>  Dwi> 2. Using uClibc toolchain
>  Dwi> 3. rootfs.cpio, initramfs of linux kernel
>
>  Dwi> Basically, I just did: make qemu_arm_versatile_defconfig; make then
> use the
>  Dwi> resulting images available under output/images
>
>  Dwi> I run qemu with following command:
>
>  Dwi> qemu-system-arm -M versatilepb -m 128M -kernel output/images/zImage
> -initrd
>  Dwi> output/images/rootfs.cpio.gz -append "root=/dev/ram rdinit=/bin/sh"
>
>  Dwi> Qemu launched but there is nothing shown.
>
> Odd, I've using the versatile config pretty often here.


I also use versatile_defconfig for kernel then using the zImage with Qemu,
and never try zImage result from buildroot. I also worked with older
version, i.e. 2.6.27


> I do configure
> it slightly differently, as I normally don't care about graphics output
> - So I use the serial output:
>
> qemu-system-arm -M versatilepb -kernel output/images/zImage -append
>   'console=ttyAMA0,115200 root=/dev/sda' -nographic -net nic -net user
>   -hda output/images/rootfs.ext2
>
> I've tweaked the versatile config a bit in git since the 2011.02
> release though (enabled getty on serial port).
>

Perhaps you could give the default versatile config in git a try before
> changing to initramfs?
>
>
I tried to use versatile config from git, but there is still the same
result. Qemu stopped after compressing Linux.

Please correct me if I am wrong, is following the versatile
config difference between 2011.02 and buildroot from git correct?

diff -Nru configs/qemu_arm_versatile_defconfig
../buildroot/configs/qemu_arm_versatile_defconfig
--- configs/qemu_arm_versatile_defconfig 2011-04-26 19:16:59.215058879 +0700
+++ ../buildroot/configs/qemu_arm_versatile_defconfig 2011-04-26
19:34:21.614809336 +0700
@@ -2,6 +2,10 @@
 BR2_arm=y
 BR2_arm926t=y

+# system
+BR2_TARGET_GENERIC_GETTY=y
+BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
+
 # filesystem
 BR2_TARGET_ROOTFS_EXT2=y
 # BR2_TARGET_ROOTFS_TAR is not set
@@ -9,7 +13,7 @@
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="2.6.36"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="2.6.38.3"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
-BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/arm-versatile/linux-2.6.36.config"
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/arm-versatile/linux-2.6.38.config"
 BR2_LINUX_KERNEL_ZIMAGE=y

I also saw there are minor difference between both boards config and I did
try 2.6.38.config in 2.6.36 kernel but I found the same result.

I am a little bit puzzled but also surprised knowing that only older kernel
version can be used ... should this be known as Qemu issue?

Using 2.6.27.58 with CS toolchain or BR toolchain the image result can be
used flawlessly, but not with 2.6.36/37/38. I am worried also with the fact
that my qemu gets segfault when missing -m parameter. I am running Ubuntu
Lucid with Qemu version 0.12.3. Could you please confirm your Qemu version?

Thanks in advance,
DWI

-- 
Good software can't be measured by `wc -l software.c`
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[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Dwi Sasongko Supriyadi]

On Tue, Apr 26, 2011 at 9:55 PM, Dwi Sasongko Supriyadi
<ruckuus@gmail.com>wrote:

>
>
> On Tue, Apr 26, 2011 at 4:46 PM, Peter Korsgaard <jacmet@uclibc.org>wrote:
>
>> >>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:
>>
>>  Dwi> Hello All,
>>  Dwi> I found issue when trying to load buildroot images on Qemu.
>> Following is my
>>  Dwi> configuration:
>>
>>  Dwi> 1. Buildroot configured with make qemu_arm_versatile_defconfig
>>  Dwi> 2. Using uClibc toolchain
>>  Dwi> 3. rootfs.cpio, initramfs of linux kernel
>>
>>  Dwi> Basically, I just did: make qemu_arm_versatile_defconfig; make then
>> use the
>>  Dwi> resulting images available under output/images
>>
>>  Dwi> I run qemu with following command:
>>
>>  Dwi> qemu-system-arm -M versatilepb -m 128M -kernel output/images/zImage
>> -initrd
>>  Dwi> output/images/rootfs.cpio.gz -append "root=/dev/ram rdinit=/bin/sh"
>>
>>  Dwi> Qemu launched but there is nothing shown.
>>
>> Odd, I've using the versatile config pretty often here.
>
>
> I also use versatile_defconfig for kernel then using the zImage with Qemu,
> and never try zImage result from buildroot. I also worked with older
> version, i.e. 2.6.27
>
>
>> I do configure
>> it slightly differently, as I normally don't care about graphics output
>> - So I use the serial output:
>>
>> qemu-system-arm -M versatilepb -kernel output/images/zImage -append
>>   'console=ttyAMA0,115200 root=/dev/sda' -nographic -net nic -net user
>>   -hda output/images/rootfs.ext2
>>
>> I've tweaked the versatile config a bit in git since the 2011.02
>> release though (enabled getty on serial port).
>>
>
> Perhaps you could give the default versatile config in git a try before
>> changing to initramfs?
>>
>>
> I tried to use versatile config from git, but there is still the same
> result. Qemu stopped after compressing Linux.
>
> Please correct me if I am wrong, is following the versatile
> config difference between 2011.02 and buildroot from git correct?
>
> diff -Nru configs/qemu_arm_versatile_defconfig
> ../buildroot/configs/qemu_arm_versatile_defconfig
> --- configs/qemu_arm_versatile_defconfig 2011-04-26 19:16:59.215058879
> +0700
> +++ ../buildroot/configs/qemu_arm_versatile_defconfig 2011-04-26
> 19:34:21.614809336 +0700
> @@ -2,6 +2,10 @@
>  BR2_arm=y
>  BR2_arm926t=y
>
> +# system
> +BR2_TARGET_GENERIC_GETTY=y
> +BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
> +
>  # filesystem
>  BR2_TARGET_ROOTFS_EXT2=y
>  # BR2_TARGET_ROOTFS_TAR is not set
> @@ -9,7 +13,7 @@
>  # Kernel
>  BR2_LINUX_KERNEL=y
>  BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> -BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="2.6.36"
> +BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="2.6.38.3"
>  BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
>
> -BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/arm-versatile/linux-2.6.36.config"
>
> +BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/arm-versatile/linux-2.6.38.config"
>  BR2_LINUX_KERNEL_ZIMAGE=y
>
> I also saw there are minor difference between both boards config and I did
> try 2.6.38.config in 2.6.36 kernel but I found the same result.
>
> I am a little bit puzzled but also surprised knowing that only older kernel
> version can be used ... should this be known as Qemu issue?
>
> Using 2.6.27.58 with CS toolchain or BR toolchain the image result can be
> used flawlessly, but not with 2.6.36/37/38. I am worried also with the fact
> that my qemu gets segfault when missing -m parameter. I am running Ubuntu
> Lucid with Qemu version 0.12.3. Could you please confirm your Qemu version?
>
>
Confirmed, the root cause seems in Qemu. I downloaded and compiled Qemu
version 0.14.0 and use it as follow:

../qemu-0.14.0/arm-softmmu/qemu-system-arm -M versatilepb -m 128M -kernel
output/images/zImage -initrd output/images/rootfs.cpio.gz -append
"root=/dev/ram rdinit=/sbin/init" -nographic

I can log in to buildroot system.

Thanks for your help.

Best regards,
DWI

-- 
Good software can't be measured by `wc -l software.c`
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[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Peter Korsgaard]

>>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:

Hi,

 Dwi> I tried to use versatile config from git, but there is still the
 Dwi> same result.  Qemu stopped after compressing Linux.

 Dwi> Please correct me if I am wrong, is following the?versatile
 Dwi> config?difference between 2011.02 and buildroot from git correct?

Yes, that's it. Getty on the first serial port and use 2.6.38.3 rather
than 2.6.36.

 Dwi> I am a little bit puzzled but also surprised knowing that only
 Dwi> older kernel version can be used ... should this be known as Qemu
 Dwi> issue?

 Dwi> Using 2.6.27.58 with CS toolchain or BR toolchain the image result
 Dwi> can be used flawlessly, but not with 2.6.36/37/38. I am worried
 Dwi> also with the fact that my qemu gets segfault when missing -m
 Dwi> parameter. I am running Ubuntu Lucid with Qemu version
 Dwi> 0.12.3. Could you please confirm your Qemu version?

This all sounds very odd. I use:

$ qemu-system-arm -version
QEMU PC emulator version 0.12.5 (Debian 0.12.5+dfsg-3), Copyright (c)
2003-2008 Fabrice Bellard

So with the qemu_arm_versatile_defconfig without any changes and the
qemu-system-arm arguments exactly as I said you don't get any output at
all?

-- 
Bye, Peter Korsgaard

[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Dwi Sasongko Supriyadi]

On Wed, Apr 27, 2011 at 1:18 AM, Peter Korsgaard <jacmet@uclibc.org> wrote:

> >>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:
>
> Hi,
>
>  Dwi> I tried to use versatile config from git, but there is still the
>  Dwi> same result.  Qemu stopped after compressing Linux.
>
>  Dwi> Please correct me if I am wrong, is following the versatile
>  Dwi> config difference between 2011.02 and buildroot from git correct?
>
> Yes, that's it. Getty on the first serial port and use 2.6.38.3 rather
> than 2.6.36.
>
>  Dwi> I am a little bit puzzled but also surprised knowing that only
>  Dwi> older kernel version can be used ... should this be known as Qemu
>  Dwi> issue?
>
>  Dwi> Using 2.6.27.58 with CS toolchain or BR toolchain the image result
>  Dwi> can be used flawlessly, but not with 2.6.36/37/38. I am worried
>  Dwi> also with the fact that my qemu gets segfault when missing -m
>  Dwi> parameter. I am running Ubuntu Lucid with Qemu version
>  Dwi> 0.12.3. Could you please confirm your Qemu version?
>
> This all sounds very odd. I use:
>
> $ qemu-system-arm -version
> QEMU PC emulator version 0.12.5 (Debian 0.12.5+dfsg-3), Copyright (c)
> 2003-2008 Fabrice Bellard
>
> So with the qemu_arm_versatile_defconfig without any changes and the
> qemu-system-arm arguments exactly as I said you don't get any output at
> all?
>
>
Yes I don't get any output at all using Qemu from Lucid Lynx

qemu --version
QEMU PC emulator version 0.12.3 (qemu-kvm-0.12.3), Copyright (c) 2003-2008
Fabrice Bellard

BUT,

Using Qemu 0.14.0 compiled from source, everything works fine. So, it seems
Ubuntu qemu-kvm-0.12.3 issue.

Thanks and regards,
DWI

-- 
Good software can't be measured by `wc -l software.c`
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[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Peter Korsgaard]

>>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:

Hi,

 Dwi> Yes I don't get any output at all using Qemu from Lucid Lynx

 Dwi> qemu --version
 Dwi> QEMU PC emulator version 0.12.3 (qemu-kvm-0.12.3), Copyright (c) 2003-2008
 Dwi> Fabrice Bellard

 Dwi> BUT,

 Dwi> Using Qemu 0.14.0 compiled from source, everything works fine. So,
 Dwi> it seems Ubuntu qemu-kvm-0.12.3 issue.

Ok, good to hear that you've got it working.

-- 
Bye, Peter Korsgaard

[Buildroot] Buildroot 2011.02 images won't load on Qemu with qemu_arm_versatile_defconfig

[Dwi Sasongko Supriyadi]

Hi Peter,

On Wed, Apr 27, 2011 at 12:29 PM, Peter Korsgaard <jacmet@uclibc.org> wrote:

> >>>>> "Dwi" == Dwi Sasongko Supriyadi <ruckuus@gmail.com> writes:
>
> Hi,
>
>  Dwi> Yes I don't get any output at all using Qemu from Lucid Lynx
>
>  Dwi> qemu --version
>  Dwi> QEMU PC emulator version 0.12.3 (qemu-kvm-0.12.3), Copyright (c)
> 2003-2008
>  Dwi> Fabrice Bellard
>
>  Dwi> BUT,
>
>  Dwi> Using Qemu 0.14.0 compiled from source, everything works fine. So,
>  Dwi> it seems Ubuntu qemu-kvm-0.12.3 issue.
>
> Ok, good to hear that you've got it working.
>
>
Thanks for the good work.

Cheers,
DWI


-- 
Good software can't be measured by `wc -l software.c`
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