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Re: [Qemu-devel] Qemu atags passing in register.
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From: |
Peter Maydell |
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Subject: |
Re: [Qemu-devel] Qemu atags passing in register. |
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Date: |
Mon, 6 Feb 2012 16:35:18 +0000 |
On 6 February 2012 12:19, address@hidden <address@hidden> wrote:
> On PandaBoard the u-boot is always passing DTF/Atags pointer in r2
> register, and I'm kind of depending on it. I need to emulate this
> behavior by -initrd qemu's argument. However it seems that
> qemu-system-arm zeros the registers on the start, and places atags in
> some hardcoded memory address no matter what.
No, qemu will correctly pass the atags in r2 if it is booting a linux
kernel (ie if you pass it a non ELF file via the -kernel argument).
Otherwise we wouldn't be able to boot Linux.
How are you starting qemu ?
-- PMM