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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: Fri, 21 Sep 2012 15:03:04 -0700

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?


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