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Re: Too slow edk2 bios boot?
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From: |
Gerd Hoffmann |
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Subject: |
Re: Too slow edk2 bios boot? |
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Date: |
Fri, 18 Jun 2021 13:46:50 +0200 |
On Fri, Jun 18, 2021 at 06:46:57PM +0800, Bin Meng wrote:
> Hi Laszlo,
>
> Using the QEMU shipped edk2 bios, for i386, it boots very quickly to
> the EFI shell.
>
> $ qemu-system-i386 -nographic -pflash edk2-i386-code.fd
>
> However with x86_64, it takes a very long time to boot to the EFI
> shell. It seems it got stuck in the PXE boot. Any ideas?
One year ago ia32 efi netboot support was dropped (and you are the first
who noticed 😎 ).
commit 9ed02fbb847277bef88dbe6a677cf3e5f39e5a38
Author: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed Jul 22 12:24:35 2020 +0200
ipxe: drop ia32 efi roms
UEFI on ia32 never really took off. Basically the BIOS -> UEFI shift
came too late, x64 was widespread already, so vendors went from BIOS
straight to UEFI on x64.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> I checked the boot manager, and it seems only 64-bit edk2 bios has
> built-in PXE boot while 32-bit does not.
It isn't edk2 but the nic boot roms, but yes, lack of pxe support on
ia32 is the root cause.
> Any idea to speed up this whole PXE boot thing?
qemu -nic none ?
take care,
Gerd