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bhyve: add basic qemu fwcfg implementation

Description

bhyve: add basic qemu fwcfg implementation

qemu's fwcfg and bhyve's fwctl are both used to configure ovmf. qemu's
fwcfg is much more powerfull than bhyve's fwctl. For that reason, add
support for qemu's fwcfg.

Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D38331

(cherry picked from commit 9b99de77f16029dd55326e0210072b14ec1ad960)

Details

Provenance
corvinkAuthored on Aug 11 2021, 7:58 AM
Reviewer
markj
Differential Revision
D38331: bhyve: add basic qemu fwcfg implementation
Parents
rG2c1cbd083696: bhyve: maintain a list of acpi devices
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