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Re: [Qemu-discuss] Trouble getting ARM Linux kernel to boot

From: Steven Frank
Subject: Re: [Qemu-discuss] Trouble getting ARM Linux kernel to boot
Date: Sat, 22 Sep 2012 18:37:54 -0700

Are you also using a kernel and QEMU built on Mac OS X?  What config options 
did you use for QEMU?

Steven, via iPhone

On Sep 21, 2012, at 5:51 PM, Ezequiel Garcia <address@hidden> wrote:

> On Fri, Sep 21, 2012 at 7:03 PM, Steven Frank <address@hidden> wrote:
>> On Sep 21, 2012, at 11:59 AM, Ezequiel Garcia <address@hidden> wrote:
>>>> I am using a Mac OS X host to build the Linux 3.5 kernel for ARM, and 
>>>> trying to boot it in QEMU 1.2.0.
>>>> The kernel, to my surprise, built fine on my Mac using the 
>>>> arm-none-eabi-gcc toolchain from MacPorts.  I'm using the 
>>>> versatile_defconfig, since that turned up a lot when I was Googling how to 
>>>> do this.
>>>> Then I try to boot my kernel in QEMU using this command line:
>>>>       arm-softmmu/qemu-system-arm -m 16 -M versatilepb -kernel 
>>>> arch/arm/boot/zImage -serial stdio
>>>> I don't have a rootfs yet -- I was hoping to just get as far as seeing the 
>>>> kernel boot messages.
>>>> It outputs this:
>>>>       Uncompressing Linux... done, booting the kernel.
>>>> Then hangs, with an empty white window.  Nothing further appears to happen.
>>> I had the same problem just yesterday. Try with older kernel 2.6.32 /
>>> 2.6.38 and let me know.
>>> Also, what kernel config are you using?
>> I'm using the versatile_defconfig to (hopefully) match up with QEMU's 
>> "versatilepb" machine.
>> I just tried 2.6.32 and 2.6.38.  Same results, although 2.6.32 outputs more 
>> dots between "Uncompressing Linux" and "booting the kernel".  But both hang 
>> at the blank white screen, just like 3.5 did.
>> There is one other interesting difference.  When trying to boot 2.6.32, QEMU 
>> remains responsive.  In other words, it responds to events like Cmd-Q to 
>> quit.  With the later kernels, QEMU hangs completely and must be force-quit 
>> (killed).
>> Very curious.  Any thoughts?
> It was working yesterday. Let me check my qemu / kernel version and
> the parameters
> I'm using....

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