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Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)
From: |
Robert Millan |
Subject: |
Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port) |
Date: |
Tue, 23 Jun 2009 14:13:25 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Tue, Jun 23, 2009 at 01:38:50PM +0200, Robert Millan wrote:
> > If I use all modules, the image is too big:
> > grub-mkimage: error: Core image is too big (0xa8200 > 0xa0000)
>
> Strange, with all modules I get 0x88200. Anyway, GRUB_MEMORY_MACHINE_UPPER
> can be increased up to GRUB_BOOT_MACHINE_LINK_ADDR, this was just copied
> from the coreboot port.
>
> With GRUB_BOOT_MACHINE_LINK_ADDR (0xffe00) you should be able to fit all
> of GRUB in.
>
> Increasing it further would involve either compression or breaking the
> 0x100000 barrier (imposed by the Linux loader). I think compression for
> qemu is just silly, but fixing the Linux loader is not trivial (Vladimir's
> memory management proposal could help on this).
Actually, you can't step after 0xa0000 because there are I/O maps there
(there's 0xb8000 and I think other VGA stuff).
I think I'll just change the link address to 0x100000. Then our limit is
almost 2 GiB, which gives plenty of room for a big memdisk in case user
wants that.
As for the Linux loader, I'll have to disable it on this port untill it
doesn't require that we reserve a hardcoded address for it.
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
[PATCH] s/GRUB_MEMORY_MACHINE_LINK_ADDR/GRUB_KERNEL_MACHINE_LINK_ADDR/g (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/22
clean patch for i386-qemu port (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/22
- Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port), Pavel Roskin, 2009/06/22
- Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/23
- Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port),
Robert Millan <=
- Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/23
- [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Robert Millan, 2009/06/24
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Pavel Roskin, 2009/06/25
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Robert Millan, 2009/06/25
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Pavel Roskin, 2009/06/25
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Robert Millan, 2009/06/26
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Pavel Roskin, 2009/06/26
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Robert Millan, 2009/06/26
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Pavel Roskin, 2009/06/26
- Re: [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)), Robert Millan, 2009/06/26