Commit Graph

544 Commits

Author SHA1 Message Date
Gerd Hoffmann 15f83fa364 ArmVirt/PlatformBootManagerLib: set up virtio serial as console
In case a virtio serial device is found in the system register the first
console port as EFI console, by updating ConIn, ConOut and ErrOut.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2023-06-01 12:48:45 +00:00
Gerd Hoffmann aaf546879a ArmVirt/PlatformBootManagerLib: factor out IsVirtioPci()
IsVirtioPciRng() becomes just a thin wrapper for IsVirtioPci().
This allows to add similar thin wrappers for other virtio
devices in the future.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-06-01 12:48:45 +00:00
Gerd Hoffmann a196b04926 ArmVirt/PlatformBootManagerLib: factor out IsVirtio()
IsVirtioRng() becomes just a thin wrapper for IsVirtio().
This allows to add similar thin wrappers for other virtio
devices in the future.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-06-01 12:48:45 +00:00
Gerd Hoffmann 6925150feb ArmVirt: add VirtioSerialDxe to ArmVirtQemu builds
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2023-06-01 12:48:45 +00:00
Ard Biesheuvel 03663c4319 ArmVirtPkg/ArmVirtQemu: Use read-only memory region type for code flash
Map the code flash with read-only attributes so we can execute from it
even under a memory protection regime that enables WXN, making all
writable memory regions non-executable by default.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
2023-05-29 16:51:01 +00:00
Sami Mujawar 8e934ab956 ArmVirtPkg: Dispatch variable service if variable emulation is enabled
The VariableRuntimeDxe links with NvVarStoreFormattedLib which is
required to establish the dependency on OvmfPkg\VirtNorFlashDxe.
The VirtNorFlashDxe installs the gEdkiiNvVarStoreFormattedGuid to
indicate it has finished initialising the flash variable storage
and that the variable service can be dispatched.

However, the kvmtool guest firmware dynamically detects if CFI
flash is absent and sets PcdEmuVariableNvModeEnable to TRUE
indicating emulated runtime variable must be used. Therefore,
in this scenario install the gEdkiiNvVarStoreFormattedGuid so
that the variable service can be dispatched.

Also link the NorFlashKvmtoolLib as a NULL library so that
it can discover if the CFI flash is absent and setup the PCD
PcdEmuVariableNvModeEnable. This is required in case the
NorFlashDxe is not yet dispatched.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-05-29 15:14:00 +00:00
Sami Mujawar 84d0b21d18 ArmVirtPkg: Fallback to variable emulation if no CFI is found
The kvmtool option '--flash <flash filename>' is used to launch
a guests VM with a CFI flash device that maps the flash file
specified at the command line.
However, kvmtool allows guest VMs to be launched without a CFI
flash device. In such scenarios the firmware can utilize the
emulated variable storage for UEFI variables. To support this
the PCD gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvModeEnable
must be set to TRUE.

Therefore, update the NorFlashKvmtoolLib to fallback to variable
emulation if a CFI device is not detected. Also improve the error
logging.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-05-29 15:14:00 +00:00
Sami Mujawar 0e5aecfed1 ArmVirtPkg: Define variables for emulating runtime variables
Kvmtool allows guest VMs to be launched with or without a
CFI flash device.

When the kvmtool option '--flash <flash filename>' is used to
launch a guest VM a CFI flash device maps the flash file that
was specified at the command line. The NorFlash driver uses
this flash as the variable storage backend.

However, when the above option is not specified, a CFI flash
device is not present. In such cases, the firmware can fallback
to use emulated runtime variables (which uses the VMs DRAM as
the storage backend).

Therefore, define the PCD PcdEmuVariableNvModeEnable required
to enable the emulated runtime variable support, but do not
enable it by default.

The firmware is expected to dynamically discover if the CFI
flash is present and subsequently enable NorFlash or emulate
the runtime variables.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-05-29 15:14:00 +00:00
Sami Mujawar 0b4263a2c2 ArmVirtPkg/PrePi: Allocate separate stack for Dxe phase
The patch "f07a9df9af60 ArmVirtPkg: Enable stack guard"
enabled stack overflow detection for ArmVirtPkg. Following
this patch, running UEFI shell command 'dmpstore' resulted
in a crash indicating a stack overflow. Invoking 'dmpstore'
results in recursive calls to CascadeProcessVariables ()
which apparently consumes the available stack space and
overflows.

Normally, SEC and PEI run off the initial stack, and the
DxeIpl PEIM is in charge of launching the DxeCore with a
full-sized stack and remapping it non-executable as well.

PrePi platforms take some shortcuts and the DXE and BDS
run off the initial stack which is relatively small. It
is therefore desirable to allocate 128 KiB worth of boot
services data memory as the stack for the Dxe phase.

The PrePiMain () in ArmVirtPkg/PrePi/PrePi.c invokes the
LoadDxeCoreFromFv () to load the Dxe core and transfers
control. The second parameter to LoadDxeCoreFromFv () is
the stack size, which is currently set to 0.
LoadDxeCoreFromFv () is implemented in PrePiLib and if the
stack size is 0, it continues to use the initial stack.
However, if a stack size is specified in the call to
LoadDxeCoreFromFv (), memory is allocated for a new stack
and the stack is switched to use the newly allocated stack
for the Dxe phase.

Therefore, specify 128 KiB as the stack size in the call to
LoadDxeCoreFromFv () so that a separate stack is allocated
and used for the Dxe phase.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-05-29 15:14:00 +00:00
Oliver Steffen a818a873e5 ArmVirtPkg: allow setting Firmware Version from build command line
ArmVirtXen.dsc initializes
gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString with with the
value of the variable "FIRMWARE_VER".

Move that functionality to ArmVirt.dsc.inc to make it available to all
ArmVirt packages, and make it conditional: only set the PCD string if
FIRMWARE_VER is actually defined.

This allows specifying the firmware version string on the build command
line with -D FIRMARE_VER=...

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2023-05-04 14:26:58 +00:00
Rebecca Cran 1639b6bf07 ArmVirtPkg: Update code to be more C11 compliant by using __func__
__FUNCTION__ is a pre-standard extension that gcc and Visual C++ among
others support, while __func__ was standardized in C99.

Since it's more standard, replace __FUNCTION__ with __func__ throughout
ArmVirtPkg.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-04-10 14:19:57 +00:00
Ard Biesheuvel 3b4d1b38ea ArmVirtPkg/ArmPlatformLibQemu: Make IdMap.S BTI compatible
The IdMap.S asm source file has not executable content, but its lack of
a BTI annotation prevents the linker from marking any executables it
emits as BTI compatible if this object is part of the build. So add the
BTI note by hand.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-03-30 11:05:22 +00:00
Sami Mujawar 6f415f8af4 ArmVirtPkg: Fix depex in kvmtool guest Rtc library
The Rtc library for the kvmtool guest firmware configures the
RTC controller address range as runtime memory by calling the
gDS->SetMemorySpaceAttributes().
The SetMemorySpaceAttributes() function has a dependency on
the CPU Arch Protocol. If the CPU Arch Protocol is not
installed the call to set the memory attributes fails with
error code EFI_NOT_AVAILABLE_YET.

Therefore, set the library dependency on the CPU Arch protocol.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
2023-03-29 13:48:54 +00:00
Sami Mujawar 47b1d61169 ArmVirtPkg: Fix parsing of serial port node
When scanning for the Serial Port in the device
tree, the length and value parameters to ScanMem8()
are not in the right order. This results in the
serial port not being detected if the chosen node
in the device tree has additional elements.

Therefore, pass the parameters to ScanMem8() in the
correct order to fix this issue.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
2023-03-29 13:48:54 +00:00
Jianyong Wu 5eb3d1bcc1 ArmVirtPkg: can't find gUefiOvmfPkgTokenSpaceGuid
commit f13264b34 introduces a bug for CloudHv as OvmfPkg/OvmfPkg.dec is
missing in CloudHvHasAcpiDtDxe.inf which leads to
gUefiOvmfPkgTokenSpaceGuid found nowhere when build.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
2023-03-28 16:27:06 +00:00
Ard Biesheuvel 16e0969ef7 ArmVirtPkg/ArmVirtQemu: Use PEI flavor of ArmMmuLib for all PEIMs
The PEI flavor of the ArmMmuLib will install a HOB that exposes its
implementation of the special helper routine that is used to update live
entries, so that other instantiations of ArmMmuLib can invoke it. This
is needed to ensure that splitting page tables using break-before-make
(BBM) does not unmap the code that is performing the split.

However, the BASE variety of ArmMmuLib discovers the HOB and sets a
global pointer to refer to it, which is not possible in PEIMs, and so
all PEIMs must use the PEI variety of this library if one does.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
2023-03-16 21:14:49 +00:00
Ard Biesheuvel f07a9df9af ArmVirtPkg: Enable stack guard
Enable the stack guard in ArmVirtPkg builds, so that stack overflows are
caught as they occur, rather than when they happen to hit a read-only
memory region.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
2023-03-16 21:14:49 +00:00
Sunil V L f13264b340 ArmVirtPkg: Fix up the location of PlatformHasAcpiDtDxe
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076

PlatformHasAcpiDtDxe is required by other architectures also.
Hence, it is moved to OvmfPkg. So, update the consumers of this
module with the new location.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2023-02-16 05:53:28 +00:00
Sunil V L 09cd17b0de ArmVirtPkg/PlatformHasAcpiDtDxe: Move to OvmfPkg
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076

This module is required by other architectures like RISC-V.
Hence, move this to OvmfPkg.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
2023-02-16 05:53:28 +00:00
Rebecca Cran c59230bce1 ArmVirtPkg: Remove RealView Debugger lines from ArmVirtPkg.dsc.inc
Since RvdPeCoffExtraActionLib has been deleted, remove lines referencing
it and the RealView Debugger from ArmVirtPkg.dsc.inc.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Bob Feng <bob.c.feng@intel.com>
2023-01-30 16:50:14 +00:00
Ard Biesheuvel ca573b8615 ArmVirtPkg/PlatformCI: Perform build test of ArmVirtKvmTool
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
2023-01-26 18:54:58 +00:00
Ard Biesheuvel 0eda253317 ArmVirtPkg/PlatformCI: Add CI coverage for ArmVirtQemuKernel
ArmVirtQemuKernel.dsc describes a firmware build that is loadable at
arbitrary address and can be invoked using the Linux/arm64 kernel boot
protocol. The early code deviates significantly from ArmVirtQemu, and so
it makes sense to cover this platform in CI even if it is not widely
used. This ensures that the relocatable PrePi and other components in
EmbeddedPkg don't regress on ARM as they are being updated for use on
TDVF.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
2023-01-26 18:54:58 +00:00
Ard Biesheuvel ed1806b2c0 ArmVirtPkg/PlatformCI: Enable optional features on Qemu AARCH64 builds
To increase the CI coverage, enable secure boot, TPM2 support and HTTPS
boot on ArmVirtQemu builds used in CI.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
2023-01-26 18:54:58 +00:00
Ard Biesheuvel 01a06884a1 ArmVirtPkg/PlatformCI: factor out reusable PlatformBuildLib.py
In order to reduce the amount of code duplication, refactor the
PlatformBuild.py script that builds ArmVirtQemu.dsc into a reusable
PlatformBuildLib.py containing most of the bits and pieces, and a small
QemuBuild.py which is specific to the DSC in question.

Suggested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
2023-01-26 18:54:58 +00:00
Ard Biesheuvel 619f077252 ArmVirtPkg/ArmVirtQemu: enlarge initial flash mapping
The initial ID map used by ArmVirtQemu only covers 2 MiB of NOR flash,
while the NOOPT build can be up to 3 MiB in size, resulting in a crash
if the unmapped 1 MiB is accessed before the real page tables are up.

So increate the initial flash mapping to 4 MiB.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2023-01-26 18:54:58 +00:00
Ard Biesheuvel 6c8a08bd8a ArmVirtPkg/PrePi: Ensure timely execution of library constructors
PrePi has a bare metal entry point, and so it is in charge of calling
the library constructors once the C runtime has been initialized
sufficiently.

However, we are now relying on a HOB to have been constructed by the
time the MMU code runs, and so the constructors should be run before
that.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2023-01-26 18:54:58 +00:00
Oliver Steffen 7e88204fe1 ArmVirtPkg: CI: use ubuntu-22.04 vm_image (Linux only)
Switch over to ubuntu-22.04 as the vm_image for Linux CI jobs.  The
previously used ubuntu-18.04 which is not available anymore since
Dec 1st 2022.

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chris Fernald <chfernal@microsoft.com>
2023-01-17 19:06:32 +00:00
Oliver Steffen 7cddfae1e8 ArmVirtPkg: CI: Use Fedora 35 container (Linux only)
Run the Linux jobs of the ArmVirtPkg platform CI inside a container,
in the same way the general CI does now. Make use of the default image
specified in the defaults.yml template.

Do not run apt-get in CI jobs to install qemu and gcc dependencies.
Assume the container image provides these.

Use Python from the container image, do not download at runtime.

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chris Fernald <chfernal@microsoft.com>
2023-01-17 19:06:32 +00:00
Oliver Steffen 89ed7e4795 ArmVirtPkg: CI: use Python version from defaults template
Use the default Python version from the defaults template
(.azurepipelines/templates/defaults.yml) in the Windows and
Linux CI jobs.

Previous changes to the CI job templates make it necessary
to specify a version number, if Python shall be pulled
at CI runtime.

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chris Fernald <chfernal@microsoft.com>
2023-01-17 19:06:32 +00:00
Gerd Hoffmann 987cc09c7c ArmVirt: don't use unaligned CopyMem () on NOR flash
Commit 789a723285 reclassified the NOR flash region as EFI_MEMORY_WC
in the OS visible EFI memory map, and dropped the explicit aligned
CopyMem() implementation, in the assumption that EFI_MEMORY_WC will be
honored by the OS, and that the region will be mapped in a way that
tolerates misaligned accesseses. However, Linux today uses device
attributes for all EFI MMIO regions, in spite of the memory type
attributes, and so using misaligned accesses is never safe.

So instead, switch to the generic CopyMem() implementation entirely,
just like we already did for VariableRuntimeDxe.

Fixes: 789a723285 ("OvmfPkg/VirtNorFlashDxe: use EFI_MEMORY_WC and drop AlignedCopyMem()")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2023-01-16 11:43:02 +00:00
Ard Biesheuvel ec54ce1f1a ArmVirtPkg/ArmVirtQemu: Avoid early ID map on ThunderX
The early ID map used by ArmVirtQemu uses ASID scoped non-global
mappings, as this allows us to switch to the permanent ID map seamlessly
without the need for explicit TLB maintenance.

However, this triggers a known erratum on ThunderX, which does not
tolerate non-global mappings that are executable at EL1, as this appears
to result in I-cache corruption. (Linux disables the KPTI based Meltdown
mitigation on ThunderX for the same reason)

So work around this, by detecting the CPU implementor and part number,
and proceeding without the early ID map if a ThunderX CPU is detected.

Note that this requires the C code to be built with strict alignment
again, as we may end up executing it with the MMU and caches off.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
2023-01-10 17:37:39 +00:00
Ard Biesheuvel 5ee17c5418 ArmVirtPkg/ArmPlatformLibQemu: Ensure that VFP is on before running C code
Now that we build the early code without strict alignment and without
suppressing the use of SIMD registers, ensure that the VFP unit is on
before entering C code.

While at it, simplyify the mov_i macro, which is only used for 32-bit
quantities.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: dann frazier <dann.frazier@canonical.com>
2023-01-10 17:37:39 +00:00
Min M Xu 538ac013d6 ArmVirtPkg: Remove CcProbeLib from ArmVirtQemu.dsc
Since CcProbeLib is not used in AcpiPlatformDxe, CcProbeLib can be removed
from ArmVirtQemu.dsc.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
2022-12-22 13:35:44 +00:00
Michael Kubacki f70f493d1b ArmVirtPkg: Add reference to new build instructions
Adds a reference to the new build instructions on the TianoCore wiki
that currently describe building with containers and Stuart.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
2022-12-16 22:17:18 +00:00
Sebastien Boeuf e254c71e9e OvmfPkg/AcpiPlatformDxe: Differentiate TDX case for Cloud Hypervisor
Rely on CcProbe() to identify when running on TDX so that ACPI tables
can be retrieved differently for Cloud Hypervisor. Instead of relying on
the PVH structure to find the RSDP pointer, the tables are individually
passed through the HOB.

Signed-off-by: Jiaqi Gao <jiaqi.gao@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Reviewed-by: Min Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
2022-12-16 02:37:56 +00:00
Sami Mujawar b556f2445c ArmVirtPkg: Kvmtool: Add RNG support using Arm TRNG interface
Bugzilla: 3668 (https://bugzilla.tianocore.org/show_bug.cgi?id=3668)

The EFI_RNG_PROTOCOL published by RngDxe has been updated to
implement the EFI_RNG_ALGORITHM_RAW using the Arm TRNG interface
to provide access to entropy.

Therefore, enable EFI_RNG_PROTOCOL for the Kvmtool guest/virtual
firmware.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-11-06 16:32:28 +00:00
Ard Biesheuvel 99338ef81e ArmVirtPkg/ArmVirtKvmTool: Migrate to OVMF's VirtNorFlashDxe
Migrate to the virt specific NOR flash driver as the ArmPlatformPkg is
going away.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
2022-10-27 16:52:01 +00:00
Ard Biesheuvel b92298af82 ArmVirtPkg/ArmVirtQemu: migrate to OVMF's VirtNorFlashDxe
Switch to the virt specific NorFlashDxe driver implementation that was
added recently.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
2022-10-27 16:52:01 +00:00
Ard Biesheuvel 115cebbe4d ArmVirtPkg/ArmVirtQemu: Clear XIP flags instead of overriding them
Clang does not support undoing the effects of -mstrict-align by passing
the -mno-strict-align counterpart, so appending the latter to the
compiler's XIPFLAGS does not work. Instead, clear the flags entirely.

This also removes -mgeneral-regs-only, but this is fine - we can
tolerate SIMD codegen in PEIMs or BASE libraries as they run with the
MMU and caches enabled.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 20:09:51 +00:00
Ard Biesheuvel b6efc505e4 ArmVirtPkg/ArmVirtQemu: omit PCD PEIM unless TPM support is enabled
The TPM discovery code relies on a dynamic PCD to communicate the TPM
base address to other components. But no other code relies on dynamic
PCDs in the PEI phase so let's drop the PCD PEIM when TPM support is not
enabled.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 7136d5491e ArmVirtPkg/QemuVirtMemInfoLib: use HOB not PCD to record the memory size
Due to the way we inherited the formerly fixed PCDs to describe the
system memory base and size from ArmPlatformPkg, we ended up with a
MemoryInit PEIM that relies on dynamic PCDs to communicate the size of
system memory between the constructor of one of its library dependencies
and the core module. This is unnecessary, and forces us to incorporate
the PCD PEIM as well, for no good reason. So instead, let's use a HOB.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel fead469a3b ArmVirtPkg/ArmVirtQemu: avoid shadowing PEIMs unless necessary
Some PEIMs register for shadow execution explicitly, but others exist
that don't care and can happily execute in place. Since the emulated NOR
flash is just RAM, shadowing has no performance benefits so let's only
do this if needed.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 75d2be4a37 ArmVirtPkg/ArmVirtQemu: Drop unused variable PEIM
The variable PEIM is included in the build but its runtime prerequisites
are absent so it is never dispatched. Just drop it.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 07be1d34d9 ArmVirtPkg/ArmVirtQemu: enable initial ID map at early boot
Now that we have all the pieces in place, switch the AArch64 version of
ArmVirtQemu to a mode where the first thing it does out of reset is
enable a preliminary ID map that covers the NOR flash and sufficient
DRAM to create the UEFI page tables as usual.

The advantage of this is that no manipulation of memory occurs any
longer before the MMU is enabled, which removes the need for explicit
coherency management, which is cumbersome and bad for performance.

It also means we no longer need to build all components that may execute
with the MMU off (including BASE libraries) with strict alignment.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel a26050f74d ArmVirtPkg/ArmVirtQemu: use first 128 MiB as permanent PEI memory
In order to allow booting with the MMU and caches enabled really early,
we need to ensure that the code that populates the page tables can
access those page tables with the statically defined ID map active.

So let's put the permanent PEI RAM in the first 128 MiB of memory, which
we will cover with this initial ID map (as it is the minimum supported
DRAM size for ArmVirtQemu).

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 2eff4ddc77 ArmVirtPkg/ArmVirtQemu: implement ArmPlatformLib with static ID map
To substantially reduce the amount of processing that takes place with
the MMU and caches off, implement a version of ArmPlatformLib specific
for QEMU/mach-virt in AArch64 mode that carries a statically allocated
and populated ID map that covers the NOR flash and device region, and
128 MiB of DRAM at the base of memory (0x4000_0000).

Note that 128 MiB has always been the minimum amount of DRAM we support
for this configuration, and the existing code already ASSERT()s in DEBUG
mode when booting with less.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 9ca2dc7bec ArmVirtPkg/ArmVirtQemu: wire up timeout PCD to Timeout variable
Use the appropriate PCD definition in the ArmVirtQemu DSC so that the
boot timeout is taken from the Timeout variable automatically, which is
what Linux tools such as efibootmgr expect.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel 2997ae3873 ArmVirtPkg: make EFI_LOADER_DATA non-executable
When the memory protections were implemented and enabled on ArmVirtQemu
5+ years ago, we had to work around the fact that GRUB at the time
expected EFI_LOADER_DATA to be executable, as that is the memory type it
allocates when loading its modules.

This has been fixed in GRUB in August 2017, so by now, we should be able
to tighten this, and remove execute permissions from EFI_LOADER_DATA
allocations.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-10-26 17:28:39 +00:00
Ard Biesheuvel b28acb22e0 ArmVirtPkg: do not enable iSCSI driver by default
The iSCSI driver slows down the boot on a pristine variable store flash
image, as it creates a couple of large EFI non-volatile variables to
preserve state between boots.

Since iSCSI boot for VMs is kind of niche anyway, let's default to
disabled. If someone needs it in their build, they can use the -D build
command option to re-enable it on the fly.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
2022-10-24 14:30:33 +00:00
Ard Biesheuvel f4213fed34 ArmVirtPkg: remove EbcDxe from all platforms
The EBC interpreter is rarely, if ever, used on ARM, and is especially
pointless on virtual machines. So let's drop it from the builds.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Leif Lindholm <quic_llindhol@quicinc.com>
2022-10-24 14:30:33 +00:00
Ard Biesheuvel 34969dd260 ArmPkg, ArmVirtPkg: put SpellCheck in AuditOnly mode
Don't allow spelling errors to break the CI build and inadvertently
reject pull requests - spelling is important but not that important.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2022-09-10 08:23:27 +00:00
Jianyong Wu db463e8e9d CloudHv/arm: switch PeiMemLib to its own
As Cloud Hypervisor has its own PeiMemLib, change it in dsc file
accordingly.

Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
2022-09-06 16:55:33 +00:00
Jianyong Wu dba79765c4 CloudHv/arm: add PeiMemInfoLib
Memory layout in CLoud Hypervisor for arm is changed and is different
with Qemu, thus we should build its own PeiMemInfoLib.
The main change in the memory layout is that normal ram may not contiguous
under 4G. The top 64M under 4G is reserved for 32bit device.

What this patch does:
1. get all of the memory node from DT;
2. Init page table for each memory node;
3. Add all of the memory nodes to Hob;

Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
2022-09-06 16:55:33 +00:00
Pierre Gondois 6dc4ac1347 ArmVirtPkg: Remove duplicated words
In an effort to clean the documentation of the above
package, remove duplicated words.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.muajwar@arm.com>
2022-09-05 13:52:51 +00:00
Edward Pickup a551de0d93 ArmVirtPkg: Fix KVM Guest Firmware
Fix build of KVM Guest Firmware, broken by commit

  4c55f6394f ("MdePkg: IORT header update for IORT Rev E.d spec")

Signed-off-by: Edward Pickup <edward.pickup@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-02 17:07:08 +00:00
Kun Qin 86a0f84470 ArmVirtPkg: Pipeline: Resolving newly introduced dependency
The new changes in SecureBootVariableLib brought in a new dependency
of PlatformPKProtectionLib.

This change added the new library instance from SecurityPkg to resolve
ArmVirtPkg builds.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Kun Qin <kuqin12@gmail.com>
2022-07-09 06:57:55 +00:00
Nicolas Ojeda Leon 8f0722434b ArmVirtPkg: Include DxeHardwareInfoLib library class in dsc
Include DxeHardwareInfoLib class in the common ArmVirt.dsc.inc so that
ArmVirt* platforms use it during build given that PciHostBridgeUtilityLib
depends on it.

Cc: Alexander Graf <graf@amazon.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Nicolas Ojeda Leon <ncoleon@amazon.com>
2022-06-24 18:06:25 +00:00
Nicolas Ojeda Leon a1bd79c514 Ovmf/HardwareInfoLib: Add Dxe lib to dynamically parse heterogenous data
Following the Hardware Info library, create the DxeHardwareInfoLib
which implements the whole API capable of parsing heterogeneous hardware
information. The list-like API grants callers a flexible and common
pattern to retrieve the data. Moreover, the initial source is a BLOB
which generalizes the host-to-guest transmission mechanism.

The Hardware Info library main objective is to provide a way to
describe non-discoverable hardware so that the host can share the
available resources with the guest in Ovmf platforms. This change
features and embraces the main idea behind the library by providing
an API that parses a BLOB into a linked list to retrieve hardware
data from any source. Additionally, list-like APIs are provided so
that the hardware info list can be traversed conveniently.
Similarly, the capability is provided to filter results by specific
hardware types. However, heterogeneous elements can be added to the
list, increasing the flexibility. This way, a single source, for
example a fw-cfg file, can be used to describe several instances of
multiple types of hardware.

This part of the Hardware Info library makes use of dynamic memory
and is intended for stages in which memory services are available.
A motivation example is the PciHostBridgeLib. This library, part
of the PCI driver populates the list of PCI root bridges during DXE
stage for future steps to discover the resources under them. The
hardware info library can be used to obtain the detailed description
of available host bridges, for instance in the form of a fw-cfg file,
and parse that information into a dynmaic list that allows, first to
verify consistency of the data, and second discover the resources
availabe for each root bridge.

Cc: Alexander Graf <graf@amazon.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Nicolas Ojeda Leon <ncoleon@amazon.com>
2022-06-22 15:34:16 +00:00
Nicolas Ojeda Leon 2b1a5b8c61 Ovmf/HardwareInfoLib: Create Pei lib to parse directly from fw-cfg
Define the HardwareInfoLib API and create the PeiHardwareInfoLib
which implements it, specifically for Pei usage, supporting
only static accesses to parse data directly from a fw-cfg file.
All list-like APIs are implemented as unsupported and only a
fw-cfg wrapper to read hardware info elements is provided.

The Hardware Info library is intended to describe non-discoverable
hardware information and share that from the host to the guest in Ovmf
platforms. The QEMU fw-cfg extension for this library provides a first
variation to parse hardware info by reading it directly from a fw-cfg
file. This library offers a wrapper function to the plain
QmeuFwCfgReadBytes which, specifically, parses header-data pairs out
of the binary values in the file. For this purpose, the approach is
incremental, reading the file block by block and outputting the values
only for a specific known hardware type (e.g. PCI host bridges). One
element is returned in each call until the end of the file is reached.

Considering fw-cfg as the first means to transport hardware info from
the host to the guest, this wrapping library offers the possibility
to statically, and in steps, read a specific type of hardware info
elements out of the file. This method reads one hardware element of a
specific type at a time, without the need to pre-allocate memory and
read the whole file or dynamically allocate memory for each new
element found.

As a usage example, the static approach followed by this library
enables early UEFI stages to use and read hardware information
supplied by the host. For instance, in early times of the PEI stage,
hardware information can be parsed out from a fw-cfg file prescinding
from memory services, that may not yet be available, and avoiding
dynamic memory allocations.

Cc: Alexander Graf <graf@amazon.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Nicolas Ojeda Leon <ncoleon@amazon.com>
2022-06-22 15:34:16 +00:00
Michael Kubacki 524a15c1fa ArmVirtPkg/ArmVirt.dsc.inc: Add VariableFlashInfoLib
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3479

Adds an instance of VariableFlashInfoLib to the platform build as
it is a new library class introduced in MdeModulePkg.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Julien Grall <julien@xen.org>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2022-05-19 06:11:20 +00:00
Rebecca Cran a744199470 ArmVirtPkg: Remove RVCT support
RVCT is obsolete and no longer used.
Remove support for it.

Signed-off-by: Rebecca Cran <quic_rcran@quicinc.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-05-13 14:58:54 +00:00
Gerd Hoffmann 96e1d337e0 ArmVirtPkg: clear PcdConOut{Row,Column}
ConSplitterDxe will pick the highest available resolution then,
thereby making better use of the available display space.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-04-22 18:37:48 +00:00
Ard Biesheuvel 54cddc3ad4 ArmVirtPkg/ArmVirtKvmTool: wire up configurable timeout
Use the correct PCD type for PcdPlatformBootTimeOut so it gets wired up
to the Timeout EFI variable automatically, which is how the boot manager
stores the timeout preference.

Note that this changes the default to 5 seconds, which appears to be
common across platforms.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2022-02-25 15:57:11 +00:00
Ard Biesheuvel 2dbed52506 ArmVirtPkg/ArmVirtMemoryInitPeiLib: avoid redundant cache invalidation
Alex reports that the cache invalidation performed by
ArmVirtMemoryInitPeiLib takes a non-negligible amount of time at boot.
This cache invalidation used to be necessary to avoid inconsistencies
between the CPU's cached and uncached views of the permanent PEI memory
region, given that the PEI phase is where the MMU gets enabled.

The only allocations done from permanent PEI memory with the MMU off are
pages used for page tables, and since commit 748fea6279
("ArmPkg/ArmMmuLib AARCH64: invalidate page tables before populating
them"), each of those is invalidated in the caches explicitly, for
reasons described in the patch's commit log. All other allocations done
in PEI are either from temporary PEI memory, which includes the stack,
or from permanent PEI memory but after the MMU has been enabled.

This means that the cache invalidation in ArmVirtMemoryInitPeiLib is no
longer necessary, and can simply be dropped.

Reported-by: Alexander Graf <graf@amazon.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Alexander Graf <graf@amazon.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-25 15:57:11 +00:00
Sami Mujawar 5b3c682d91 ArmVirtPkg/Kvmtool: Enable Acpiview
Acpiview is a command line tool allowing to display, dump, or check
installed ACPI tables. Add a 'ACPIVIEW_ENABLE' switch to enable it
on an ArmVirt platform.

The switch is set for the ArmVirtKvmTool platform.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-01 17:39:34 +00:00
Sami Mujawar 17a02163bd ArmVirtPkg/Kvmtool: Enable ACPI support
A Configuration Manager that uses the Dynamic Tables framework
to generate ACPI tables for Kvmtool Guests has been provided.
This Configuration Manager uses the FdtHwInfoParser module to
parse the Kvmtool Device Tree and generate the required
Configuration Manager objects for generating the ACPI tables.

Therefore, enable ACPI table generation for Kvmtool.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3742
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-01 17:39:34 +00:00
Sami Mujawar 312ef7a0a4 ArmVirtPkg/Kvmtool: Add Configuration Manager
Add Configuration Manager to enable ACPI tables for Kvmtool
firmware. The Configuration Manager for Kvmtool uses the DT
Hardware Information Parser module (FdtHwInfoParser) to parse
the DT provided by Kvmtool. The FdtHwInfoParser parses the DT
and invokes the callback function HW_INFO_ADD_OBJECT to add
the Configuration Manager objects to the Platform Information
repository.

The information for some Configuration Manager objects may not
be available in the DT. Such objects are initialised locally
by the Configuration Manager.

Support for the following ACPI tables is provided:
 - DBG2
 - DSDT (Empty stub)
 - FADT
 - GTDT
 - MADT
 - SPCR
 - SSDT (Cpu Hierarchy)
 - SSDT (Pcie bus)

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-01 17:39:34 +00:00
Sami Mujawar 0dbd356983 ArmVirtPkg/Kvmtool: Add DSDT ACPI table
Most ACPI tables for Kvmtool firmware are dynamically
generated. The AML code is also generated at runtime
for most components in appropriate SSDTs.

Although there may not be much to describe in the DSDT,
the DSDT table is mandatory.

Therefore, add an empty stub for DSDT.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-01 17:39:34 +00:00
Pierre Gondois dc1118fa0d ArmVirtPkg: Add cspell exceptions
The cpsell tool checks for unknown words in the upstream CI.
Add some new words to the list of exceptions.

Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2022-02-01 17:39:34 +00:00
Abner Chang ba79becd55 OvmfPkg/BaseCachingPciExpressLib: Migrate BaseCachingPciExpressLib
Move BaseCachingPciExpressLib library from ArmVirtPkg to under OvmfPkg.
RISC-V Virt platform can leverage the same library to access PCI Express
registers through PCI Express base address set in PcdPciExpressBaseAddress
and cached in a global variable.

Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Abner Chang <abner.chang@hpe.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2022-01-29 17:36:59 +00:00
Gerd Hoffmann e95b44c90e ArmVirtPkg: change qemu default resolution to 1280x800
ovmf default display resolution is 800x600.  This is rather small for
modern guests.  qemu used 1024x768 as default for a long time and
switched the to 1280x800 recently[1] for the upcoming 7.0 release.

This patch brings ovmf in sync with the recent qemu update and likewise
switches the default to 1280x800.

[1] de72c4b7cd

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2022-01-29 16:16:15 +00:00
Sebastien Boeuf 66bce05f6d OvmfPkg: Generalize AcpiPlatformDxe
Don't make the package Qemu centric so that we can introduce some
alternative support for other VMMs not using the fw_cfg mechanism.

This patch is purely about renaming existing files with no functional
change.

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-12-11 14:26:05 +00:00
Michael Kubacki 2b16a4fb91 ArmVirtPkg: Apply uncrustify changes
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the ArmVirtPkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-12-07 17:24:28 +00:00
Michael D Kinney ea85f0fe13 ArmVirtPkg: Change complex DEBUG_CODE() to DEBUG_CODE_BEGIN/END()
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3767

Update use of DEBUG_CODE(Expression) if Expression is a complex code
block with if/while/for/case statements that use {}.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-12-07 17:24:28 +00:00
Michael D Kinney 9607597a74 ArmVirtPkg: Change OPTIONAL keyword usage style
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760

Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-12-07 17:24:28 +00:00
Michael D Kinney c5b3a56e4f ArmVirtPkg: Change use of EFI_D_* to DEBUG_*
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3739

Update all use of EFI_D_* defines in DEBUG() macros to DEBUG_* defines.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2021-12-07 17:24:28 +00:00
Michael D Kinney c97fee87f0 ArmVirtPkg: Update YAML to ignore specific ECC files/errors
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3749

Update package YAML files to ignore ECC errors that are
already present.  These issues must be fixed in the future,
but should not block source code changes for these known
issues.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
2021-11-30 14:19:07 +00:00
Abner Chang e0c23cba5e ArmVirtPkg/VirtioFdtDxe: Relocate VirtioFdtDxe to OvmfPkg/Fdt
Relocate VirtioFdtDxe to OvmfPkg/Fdt, this driver is leverage by
both ARM and RISC-V archs.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
2021-10-14 06:25:52 +00:00
Abner Chang 9a7509e465 ArmVirtPkg/FdtPciHostBridgeLib: Relocate FdtPciHostBridgeLib to OvmfPkg/Fdt
Relocate FdtPciHostBridgeLib to OvmfPkg/Fdt, this library is
leverage by both ARM and RISC-V archs. Also use
PcdPciMmio32Translation and PcdPciMmio64Translation
PCDs provided by MdePkg instead of ArmPkg.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
2021-10-14 06:25:52 +00:00
Abner Chang f8d0501ded ArmVirtPkg/QemuFwCfgLib: Relocate QemuFwCfgLib to OvmfPkg
Relocate QemuFwCfgLib to OvmfPkg/Library/QemuFwCfgLib and rename
it to QemuFwCfgLibMmio, this library is leverage by both ARM and
RISC-V archs.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
2021-10-14 06:25:52 +00:00
Abner Chang d881c6ddf5 ArmVirtPkg/HighMemDxe: Relocate HighMemDxe to OvmfPkg
Relocate HighMemDxe to OvmfPkg/Fdt, this library is leverage by
both ARM and RISC-V archs.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
2021-10-14 06:25:52 +00:00
Abner Chang 77e9b3a7c6 ArmVirtPkg/FdtPciPcdProducerLib: Relocate PciPcdProducerLib to OvmfPkg
Relocate PciPcdProducerLib to OvmfPkg/Fdt, this library is
leverage by both ARM and RISC-V archs.

Add OvmfPkg/Fdt maintainers in Maintainers.txt

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
2021-10-14 06:25:52 +00:00
Abner Chang 7d78a86ecf ArmPkg: Use PcdPciIoTranslation PCD from MdePkg
PcdPciIoTranslation PCD is relocated to MdePkg and leveraged by
both ARM and RISC-V arch. This patch removes the one from ArmPkg
and address the corresponding changes required for other modules
under ArmVirtPkg.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-10-14 06:25:52 +00:00
Abner Chang e40fefafa9 ArmVirtPkg/FdtClintDxe: Move FdtClientDxe to EmbeddedPkg
This is one of the series patches to restructure the location of modules under
ArmVirtPkg for RiscVVirtPkg. RiscVVirtPkg leverage FDT Client protocol to
parse FDT nodes.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-10-14 06:25:52 +00:00
Stefan Berger c806b76865 ArmVirtPkg: Disable the TPM2 platform hierarchy
Disable the TPM2 platform hierarchy by directly calling
ConfigureTpmPlatformHierarchy().

Per the TCG firmware specification "TCG PC Client Platform Firmware Profile
Specification" the TPM 2 platform hierarchy needs to be disabled or a
random password set and discarded before the firmware passes control to the
next stage bootloader or kernel.

Current specs are here:
https://trustedcomputinggroup.org/wp-content/uploads/TCG_PCClient_PFP_r1p05_v23_pub.pdf

Section 11 states:
"Platform Firmware MUST protect access to the Platform Hierarchy
and prevent access to the platform hierarchy by non-manufacturer-
controlled components."

Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3510
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-10-05 09:54:11 +00:00
Stefan Berger b3685956d2 ArmVirtPkg: Reference new TPM classes in the build system for compilation
We just added the same functionality to the OvmfPkg. However, on x86, we
could use the notification mechanism around
gEfiDxeSmmReadyToLockProtocolGuid to indirectly invoke
ConfigureTpmPlatformHierarchy(). Since ARM does not have an SMM mode, we
have to use direct invocation of this function at the same place in
PlatformBootManagerBeforeConsole() as it is called on x86.

Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3510
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-10-05 09:54:11 +00:00
Grzegorz Bernacki 12a4d0cb9d ArmVirtPkg: add SecureBootVariableLib class resolution
The edk2 patch
  SecurityPkg: Create library for setting Secure Boot variables.

moves generic functions from SecureBootConfigDxe and places
them into SecureBootVariableLib. This patch adds SecureBootVariableLib
mapping for ArmVirtPkg platform.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Reviewed-by: Sunny Wang <sunny.wang@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2021-08-03 07:26:41 +00:00
Philippe Mathieu-Daude 610bcc69ed ArmVirtPkg: Remove meaningless comment
The "Shell Embedded Boot Loader" description (added in
commit 6f5872b1f4) does not add any value, remove it.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Julien Grall <julien@xen.org>
Suggested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-07-29 10:13:32 +00:00
Dov Murik 6bf5580a3d ArmVirtPkg: add BlobVerifierLibNull to DSC
This prepares the ground for calling VerifyBlob() in
QemuKernelLoaderFsDxe.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ashish Kalra <ashish.kalra@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3457
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
2021-07-29 09:49:50 +00:00
Jianyong Wu 0e3b6bd0ee ArmVirtPkg: support Cloud Hypervisor in edk2
Cloud Hypervisor is KVM based VMM and is implemented in rust. Just like
other VMMs it need UEFI support to let ACPI work. That's why
Cloud Hypervisor is introduced here.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>

Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-07-07 16:41:37 +00:00
Jianyong Wu c28fc8ab3b ArmVirtPkg: Install Acpi tables for Cloud Hypervisor
There is no device like Fw-cfg in Qemu in Cloud Hypervisor, so a specific
Acpi handler is introduced here.

The handler implemented here is in a very simple way:
1. acquire the RSDP from the PCD variable in the top ".dsc";
2. get the XSDT address from RSDP structure;
3. get the ACPI tables following the XSDT structure and install them
one by one;
4. get DSDT address from FADT and install DSDT table.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>

Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-07-07 16:41:37 +00:00
Jianyong Wu 31fcee6d99 ArmVirtPkg: Add PlatformHasAcpiDtDxe for Cloud Hypervisor
The ArmVirtPkg\PlatformHasAcpiDtDxe implementation is not common
and is specific for Qemu. So add a Cloud Hypervisor specific
version that decides whether the firmware should expose an ACPI
based or a Device Tree based hardware description to an operating
system.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>

Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-07-07 16:41:37 +00:00
Sami Mujawar 4dda0f7ab4 ArmVirtPkg: Enable PCIe support for Kvmtool
PCIe support has been added to the Kvmtool virtual machine
manager. Therefore, enable PCIe support for Kvmtool firmware.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Alexandru Elisei <alexandru.elisei@arm.com>
2021-06-22 17:04:45 +00:00
Sami Mujawar 5959879e92 ArmVirtPkg: Add PCIe host bridge utility lib for ArmVirtPkg
PCIe support has been added to Kvmtool Virtual Machine Manager.
The PCI host bridge utility lib is used to retrieve information
about the Root Bridges in a platform.
Therefore, add an instance of PciHostBridgeUtilityLib as this is
required to enable PCIe support for Kvmtool firmware.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Alexandru Elisei <alexandru.elisei@arm.com>
2021-06-22 17:04:45 +00:00
Dandan Bi c8a5d99302 ArmVirtPkg: Consume MdeLibs.dsc.inc for RegisterFilterLib
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3246

MdeLibs.dsc.inc was added for some basic/default library
instances provided by MdePkg and RegisterFilterLibNull Library
was also added into it as the first version of MdeLibs.dsc.inc.

So update platform dsc to consume MdeLibs.dsc.inc for
RegisterFilterLibNull which will be consumed by IoLib and BaseLib.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2021-03-31 05:47:10 +00:00
Jiahui Cen via groups.io e843a21e23 ArmVirtPkg/ArmVirtQemu: Add support for HotPlug
It is necessary to add padding for hotplugable PCI Devices like
pcie-root-port.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Yubo Miao <miaoyubo@huawei.com>
Message-Id: <20210119011302.10908-12-cenjiahui@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2021-01-20 16:14:20 +00:00
Jiahui Cen via groups.io c4cbd86493 ArmVirtPkg/FdtPciHostBridgeLib: Add extra pci root buses support
In order to take advantages of extra pci root buses in ArmVirtPkg, it is
necessary to scan extra root buses when getting root briges. And now
PciHostBridgeUtilityLib already provides a set of utility functions that
support for extra pci root buses, like PciHostBridgeUtilityGetRootBridges()
/ PciHostBridgeUtilityFreeRootBridges(). So let's rebase
ArmVirtPkg/FdtPciHostBridgeLib to PciHostBridgeUtilityGetRootBridges() /
PciHostBridgeUtilityFreeRootBridges() to extend ArmVirtPkg with extra
pci root buses support.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Yubo Miao <miaoyubo@huawei.com>
Message-Id: <20210119011302.10908-11-cenjiahui@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2021-01-20 16:14:20 +00:00
Jiahui Cen via groups.io aa445ce02b ArmVirtPkg/FdtPciHostBridgeLib: Refactor init/uninit of root bridge
Rebase ArmVirtPkg/FdtPciHostBridgeLib to the new
PciHostBridgeUtilityInitRootBridge()/PciHostBridgeUtilityUninitRootBridge()
utility functions.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Yubo Miao <miaoyubo@huawei.com>
Message-Id: <20210119011302.10908-7-cenjiahui@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2021-01-20 16:14:20 +00:00
Jiahui Cen via groups.io 166a32d09a ArmVirtPkg: Refactor with PciHostBridgeUtilityLib
Eliminate currently duplicated code in ArmVirtPkg with the common utility
class PciHostBridgeUtilityLib.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Yubo Miao <miaoyubo@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210119011302.10908-3-cenjiahui@huawei.com>
2021-01-20 16:14:20 +00:00
Laszlo Ersek 6e55868631 ArmVirtPkg: disable list length checks in NOOPT and DEBUG builds
In NOOPT and DEBUG builds, if "PcdMaximumLinkedListLength" is nonzero,
then several LIST_ENTRY *node* APIs in BaseLib compare the *full* list
length against the PCD.

This turns the time complexity of node-level APIs from constant to linear,
and that of full-list manipulations from linear to quadratic.

(See some example OVMF numbers in the previous patch.)

Checking list lengths against an arbitrary maximum -- default value, and
current ArmVirtPkg setting: 1,000,000 -- seems useless even in NOOPT and
DEBUG builds, while the cost is significant; so set the PCD to 0.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Julien Grall <julien@xen.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3152
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Message-Id: <20210113085453.10168-11-lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-01-19 18:23:28 +00:00