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Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig
From: |
Russell King - ARM Linux |
Subject: |
Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig |
Date: |
Fri, 18 Apr 2014 09:41:41 +0100 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
On Thu, Apr 17, 2014 at 09:53:23PM -0500, Rob Herring wrote:
> On Thu, Apr 17, 2014 at 4:35 PM, Russell King - ARM Linux
> <address@hidden> wrote:
> > No. You simply can't eliminate any of the above - each one has been
> > negotiated through quite an amount of discussion with relevant parties
> > and/or due to technical requirements and they just can't be magic'd
> > away.
> >
> > Plus the ARM64 image format is different from our zImage format. It
> > would make far *more* sense to align our Image format with our zImage
> > format so existing boot loaders which look for the zImage magic numbers
> > can boot plain Image files too.
> >
> > Moreover, since we could *never* align zImage with the ARM64 format,
> > why on earth would we want to start using the ARM64 format for the
> > Image format?
>
> I'm not talking about zImage. I'm talking about Image files only. The
> arm64 Image header could be added to ARM Image files and that would
> not hurt or change a thing for existing users. The cost is 64 bytes.
No it isn't. The cost is 64-bytes *and* user confusion with two
completely different "headers" for no reason what so ever.
Why use the ARM64 version and then have it *block* existing boot
loaders which look for the zImage magic from being able to boot an
Image.
It's a much saner idea to use the ARM32 zImage header than to use the
ARM64 version - or nothing at all.
--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, (continued)
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Nicolas Pitre, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Rob Herring, 2014/04/17
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Nicolas Pitre, 2014/04/18
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Daniel Thompson, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Daniel Thompson, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig,
Russell King - ARM Linux <=
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Daniel Thompson, 2014/04/22
- Re: [Qemu-devel] Change of TEXT_OFFSET for multi_v7_defconfig, Russell King - ARM Linux, 2014/04/22