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For the native tools, a static patch inserted gcc/g++/ld/ar while later
adding BUILD_LDFLAGS and BUILD_CFLAGS with sed. Now it's all done with sed,
which has the advantage that it uses the actual compile variables. However,
in practice those are the same.
More importantly, picking the build tools for the target was
broken. ovmf-native tried to insert TARGET_PREFIX into the tools
definition file, but that variable is empty in a native recipe. As a
result, "gcc" was used instead of "${HOST_PREFIX}gcc", leading to an
undesirable dependency on the host compiler and potentially
(probably?!) causing some of the build issues that were seen for ovmf.
The new approach is to override the tool selection in ovmf-native so
that the HOST_PREFIX env variable is used, which then gets exported
during do_compile for the target.
While at it, Python code that gets appened to do_patch only to call
shell functions gets replaced with the do_patch[postfuncs] mechanism.
Incremental builds now always use the tools definition from the
current ovmf-native; previously, only the initial build copied the
template file.
Probably the entire split into ovmf-native and ovmf could be
removed. This merely hasn't been attempted yet.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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The VfrCompile tool has a hard-coded maximum length for path names
which turned out to be too small by around 20 characters in the
Yocto autobuilder setup. Increasing the maximum by a factor of 4
is relatively easy and makes the problem less likely.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
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This patch was added to meta-luv for kernel testing purposes and
probably is not relevant for OE-core.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
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When booting a qemu virtual machine with ovmf.secboot, it comes up
with no keys installed and thus Secure Boot disabled. To lock down
the machine like a typical PC, one has to enroll the same keys
that PC vendors normally install, i.e. the ones from Microsoft.
This can be done manually (see
https://wiki.ubuntu.com/SecurityTeam/SecureBoot and
https://github.com/tianocore-docs/Docs/raw/master/White_Papers/A_Tour_Beyond_BIOS_into_UEFI_Secure_Boot_White_Paper.pdf) or automatically with the EnrollDefaultKeys.efi helper
from the Fedora ovmf rpm.
To use this with qemu:
$ bitbake ovmf-shell-image
...
$ runqemu serial nographic qemux86 ovmf-shell-image wic ovmf.secboot
...
UEFI Interactive Shell v2.1
EDK II
UEFI v2.60 (EDK II, 0x00010000)
Mapping table
FS0: Alias(s):HD2b:;BLK4:
PciRoot(0x0)/Pci(0x5,0x0)/HD(1,GPT,06AEF759-3982-4AF6-B517-70BA6304FC1C,0x800,0x566C)
BLK0: Alias(s):
PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x0)
BLK1: Alias(s):
PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x1)
BLK2: Alias(s):
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
BLK3: Alias(s):
PciRoot(0x0)/Pci(0x5,0x0)
Press ESC in 1 seconds to skip startup.nsh or any other key to continue.
Shell> fs0:EnrollDefaultKeys.efi
info: SetupMode=1 SecureBoot=0 SecureBootEnable=0 CustomMode=0 VendorKeys=1
info: SetupMode=0 SecureBoot=1 SecureBootEnable=1 CustomMode=0 VendorKeys=0
info: success
Shell> reset
Remember that this will modify
deploy/images/qemux86/ovmf.secboot.qcow2, so make a copy and use the
full path of that copy instead of the "ovmf" argument if needed.
The ovmf-shell-image contains an EFI shell, which is what got started
here directly. After enrolling the keys, Secure Boot is active and the
same image cannot be booted anymore, so the BIOS goes through the
normal boot targets (including network boot, which can take a while to
time out), and ends up in the internal EFI shell. Trying to invoke
bootia32.efi (the shell from the image) or EnrollDefaultKeys.efi then
fails:
Shell> bootia32.efi
Command Error Status: Security Violation
The main purpose at the moment is to test that Secure Boot enforcement
really works. If we had a way to sign generated images, that part could
also be tested by booting in a locked down qemu instance.
0007-OvmfPkg-EnrollDefaultKeys-application-for-enrolling-.patch is
from
https://src.fedoraproject.org/cgit/rpms/edk2.git/tree/0007-OvmfPkg-EnrollDefaultKeys-application-for-enrolling-.patch?id=b1781931894bf2057464e634beed68b1e3218c9e
with one line changed to fix
https://bugzilla.redhat.com/show_bug.cgi?id=132502:
"EFI_STATUS Status = EFI_SUCCESS;" in EnrollListOfX509Certs() lacked
the initializer.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
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This is an unmodified copy of
github.com/01org/luv-yocto/meta-luv/recipes-core/ovmf revision
4be4329.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
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Patrick Ohly
meta-luv