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| author | Rebecca Cran <bcran@FreeBSD.org> | 2021-11-28 16:34:33 +0000 |
|---|---|---|
| committer | Rebecca Cran <bcran@FreeBSD.org> | 2021-12-12 15:07:27 +0000 |
| commit | 866036f46c6e8884cc7a2aa029408366ede40a23 (patch) | |
| tree | e485f04a76d7072ff097865f754ec94a67b710ee /usr.sbin/bhyve/bhyve.8 | |
| parent | bf839416381cb9f63a8a82ea6e897a22830a8009 (diff) | |
| download | src-866036f46c6e8884cc7a2aa029408366ede40a23.tar.gz src-866036f46c6e8884cc7a2aa029408366ede40a23.zip | |
bhyve: Support a _VARS.fd file for bootrom
OVMF creates two separate .fd files, a _CODE.fd file containing
the UEFI code, and a _VARS.fd file containing a template of an
empty UEFI variable store.
OVMF decides to write variables to the memory range just below the
boot rom code if it detects a CFI flash device. So here we add
just the barest facsimile of CFI command handling to bootrom.c
that is needed to placate OVMF.
Submitted by: D Scott Phillips <d.scott.phillips@intel.com>
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D19976
MFC After: 1 week
Diffstat (limited to 'usr.sbin/bhyve/bhyve.8')
| -rw-r--r-- | usr.sbin/bhyve/bhyve.8 | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/usr.sbin/bhyve/bhyve.8 b/usr.sbin/bhyve/bhyve.8 index 3b7bf6b65467..fe4eb3ffaaeb 100644 --- a/usr.sbin/bhyve/bhyve.8 +++ b/usr.sbin/bhyve/bhyve.8 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 13, 2021 +.Dd November 28, 2021 .Dt BHYVE 8 .Os .Sh NAME @@ -500,10 +500,15 @@ Use the host TTY device for serial port I/O. .Pp Boot ROM device backends: .Bl -tag -width 10n -.It Ar romfile +.It Ar romfile Ns Op Cm \&, Ns Ar varfile Map .Ar romfile in the guest address space reserved for boot firmware. +If +.Ar varfile +is provided, that file is also mapped in the boot firmware guest +address space, and any modifications the guest makes will be saved +to that file. .El .Pp Pass-through device backends: @@ -916,6 +921,20 @@ bhyve -c 2 -m 4G -w -H \\ -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \\ uefivm .Ed +.Pp +Run a UEFI virtual machine with a VARS file to save EFI variables. +Note that +.Nm +will write guest modifications to the given VARS file. +Be sure to create a per-guest copy of the template VARS file from +.Pa /usr . +.Bd -literal -offset indent +bhyve -c 2 -m 4g -w -H \\ + -s 0,hostbridge \\ + -s 31,lpc -p com1,stdio \\ + -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI_CODE.fd,BHYVE_UEFI_VARS.fd + uefivm +.Ed .Sh SEE ALSO .Xr bhyve 4 , .Xr netgraph 4 , |