Bug 287326 - bhyve: Ubuntu guest doesn't boot with TPM emulation enabled
Summary: bhyve: Ubuntu guest doesn't boot with TPM emulation enabled
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: bhyve (show other bugs)
Version: CURRENT
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-virtualization (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-06-05 18:49 UTC by Roman Bogorodskiy
Modified: 2025-06-06 15:34 UTC (History)
1 user (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Roman Bogorodskiy freebsd_committer freebsd_triage 2025-06-05 18:49:41 UTC 
As mentioned in https://reviews.freebsd.org/D46373, I run swtpm like that:

sudo swtpm socket --tpmstate backend-uri=file:////var/run/swtpm/tpm.state --tpm2 --server type=unixio,path=/var/run/swtpm/tpm --log file=/tmp/swtmp.log --flags not-need-init --daemon

I'm trying to start an Ubuntu guest like that:

bhyve -c 2 -m 4096 -A -I -u -H -P -s 0:0,hostbridge -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd -s 2:0,xhci,tablet -s 1:0,lpc -s 3:0,ahci,hd:/data/img/ubuntu.img -s 4:0,virtio-net,tap2,mac=52:54:00:d2:8b:41 -s 5:0,fbuf,tcp=127.0.0.1:5905 -l com1,/dev/nmdm1A -l tpm,swtpm,/var/run/swtpm/tpm ubuntu

In stdout I see:

/tmp/bhyve.2Vm0B4f    873:         OperationRegion(TPP1, SystemMemory, Add(0xfed45000, Arg0), One)
Remark   2173 -                                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (\_SB.TPM.TPFN)

/tmp/bhyve.2Vm0B4f    895:       Method(_DSM, 4, Serialized)
Warning  3115 -                           ^ Not all control paths return a value (\_SB.TPM._DSM)

/tmp/bhyve.2Vm0B4f    895:       Method(_DSM, 4, Serialized)
Warning  3107 -                           ^ Reserved method must return a value (Integer/String/Buffer/Package/Reference required for _DSM)

/tmp/bhyve.2Vm0B4f    985:         If(LEqual(Arg0, ToUUID("376054ED-CC13-4675-901C-4756D7F2D45D"))) /* UUID */
Remark   2184 -    

In the VM console I see it's cycling through:

BdsDxe: loading Boot0001 "UEFI BHYVE SATA DISK BHYVE-3609-D803-384E" from PciRoot(0x0)/Pci(0x3,0x0)/Sata(0x0,0xFFFF,0x0)                                                                                                                                        [0/4935]
BdsDxe: starting Boot0001 "UEFI BHYVE SATA DISK BHYVE-3609-D803-384E" from PciRoot(0x0)/Pci(0x3,0x0)/Sata(0x0,0xFFFF,0x0)
Reset System

When I start it with:

bhyve -c 2 -m 4096 -A -I -u -H -P -s 0:0,hostbridge -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd -s 2:0,xhci,tablet -s 1:0,lpc -s 3:0,ahci,hd:/data/img/ubuntu.img -s 4:0,virtio-net,tap2,mac=52:54:00:d2:8b:41 -s 5:0,fbuf,tcp=127.0.0.1:5905 -l com1,/dev/nmdm1A ubuntu

It boots fine.

Also, I've tried FreeBSD guest instead of Ubuntu, and it boots fine with TPM:

bhyve -c 2 -m 4096 -A -I -u -H -P -s 0:0,hostbridge -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd,/var/lib/libvirt/bhyve/nvram/freebsd_VARS.fd -s 2:0,xhci,tablet -s 1:0,lpc -s 3:0,ahci,hd:/data/img/freebsd.img -s 4:0,virtio-net,tap2,mac=52:54:00:13:fa:59 -s 5:0,fbuf,tcp=127.0.0.1:5920 -l com1,/dev/nmdm5A -l tpm,swtpm,/var/run/swtpm/tpm freebsd

And a brief check shows that TPM works in this configuration. Is that a bug in bhyve, firmware, or Ubutnu, or something else?

BTW, running -CURRENT as of May 31th with edk2-bhyve-g202505.