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Re: [PATCH] grub-shell: Add flexibility in QEMU firmware handling
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From: |
Gerd Hoffmann |
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Subject: |
Re: [PATCH] grub-shell: Add flexibility in QEMU firmware handling |
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Date: |
Mon, 23 Jan 2023 10:28:09 +0100 |
On Sat, Jan 21, 2023 at 12:15:20AM -0600, Glenn Washburn wrote:
> The current qemu firmware paths for arm-efi and arm64-efi are not available
> on Ubuntu/Debian but are hardcoded. Switch to first looking for firmware
> files in the source directory and if not found, look for them in locations
> where Debian installs them.
I'd suggest to inspect the *.json files in /usr/share/qemu/firmware/ to
find distro-installed firmware files.
> Do not load the system 32-bit ARM firmware VARS file because it must be
> writable to prevent a data exception and boot failure. So in order to use
> the VARS file, it must be copied to a writable location, but its quite large
> at 64M and is not needed to boot successfully.
You can load the VARS file with snapshot=on (and drop readonly=on) to
make things work without copying the file.
take care,
Gerd