On 29/2/24 12:38, Song Gao wrote:
From: Xianglai Li <[email protected]>

The UEFI loading mode in loongarch is very different
from that in other architectures:loongarch's UEFI code
is in rom, while other architectures' UEFI code is in flash.

loongarch UEFI can be loaded as follows:
-machine virt,pflash=pflash0-format
-bios ./QEMU_EFI.fd

Other architectures load UEFI using the following methods:
-machine virt,pflash0=pflash0-format,pflash1=pflash1-format

loongarch's UEFI loading method makes qemu and libvirt incompatible
when using NVRAM, and the cost of loongarch's current loading method
far outweighs the benefits, so we decided to use the same UEFI loading
scheme as other architectures.

FYI I'm still trying to find a way to avoid that, planning to discuss
more with libvirt folks. Well, maybe it is a waste of my time and I
should just stop worrying / caring about this long standing issue.

Cc: Andrea Bolognani <[email protected]>
Cc: [email protected]
Cc: Philippe Mathieu-Daudé <[email protected]>
Cc: Song Gao <[email protected]>
Cc: [email protected]
Signed-off-by: Xianglai Li <[email protected]>
Tested-by: Andrea Bolognani <[email protected]>
Reviewed-by: Song Gao <[email protected]>
Message-Id: 
<0bd892aa9b88e0f4cc904cb70efd0251fc1cde29.1708336919.git.lixiang...@loongson.cn>
Signed-off-by: Song Gao <[email protected]>
---
  hw/loongarch/acpi-build.c   |  29 +++++++++--
  hw/loongarch/virt.c         | 101 ++++++++++++++++++++++++++----------
  include/hw/loongarch/virt.h |  10 ++--
  3 files changed, 107 insertions(+), 33 deletions(-)


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