One of the reasons for introducing virtio-gpu support to OvmfPkg and
ArmVirtpkg was the fact that under KVM virtualization on ARM, the
legacy VGA cannot be used reliably. This is due to an implementation
detail of QEMU+KVM, which remaps cached host memory into the guest
address space as a framebuffer behind a PCI BAR. Given that the purpose
of a memory mapped framebuffer is its side effects, such BARs should
never be mapped cacheable in the guest, and the mismatched attributes
between host and guest result in a loss of coherency, visible as
corruption in the framebuffer image.
This issue does not occur under TCG emulation, nor did we expect it to
actually bring down the guest under KVM, and so it was deemed harmless
to keep support for the VGA device as well. However, as it turns out,
the fact that the framebuffer BAR is mapped using device semantics by
default may result in unalignment faults when we use the ordinary string
copy routines on the contents. In theory, we could work around this by
remapping the BAR as write combining, but it appears the generic PCI
bus driver does not actually implement this.
So let's remove the QemuVideoDxe driver altogether. This may result
in loss of functionality for use cases that rely on the framebuffer
to be directly addressable (such as EFIFB), but given that this never
worked reliably under KVM in the first place, let's not let that stop
us from dropping support for it.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
With the SerialDxe change in commit 4cf3f37c87 ("MdeModulePkg SerialDxe:
Process timeout consistently in SerialRead", 2017-07-18), setting
EFI_SERIAL_INPUT_BUFFER_EMPTY in the "Control" output parameter, in the
GetControl() SerialPortLib function, is no longer a "small optimization".
Namely, due to the SerialDxe change, the GetOneKeyFromSerial() call in
TerminalDxe's TerminalConInTimerHandler() can take very long if the input
queue is empty, even if GetOneKeyFromSerial()'s return value causes the
loop to be exited right after, in the first iteration.
This issue causes a boot hang in ArmVirtQemu: with the input queue empty,
TerminalConInTimerHandler() takes so long to return that, by the time it
returns, there's another execution queued already (due to the associated
timer event being signaled meanwhile). The boot process is stuck in the
timer event handler.
Therefore even the first GetOneKeyFromSerial() iteration must be prevented
in TerminalConInTimerHandler() if the input queue is empty, and that
requires implementing GetControl() for real.
Implement the SetAttributes(), SetControl() and GetControl() APIs (of
SerialPortExtLib origin) in FdtPL011SerialPortLib with calls to matching
PL011UartLib functions. This follows the example of
"ArmPlatformPkg/Library/PL011SerialPortLib" and also matches Star's
original idea under [1].
The patch can be considered a continuation of commit ad7f6bc2e1
("ArmVirtPkg: Use SerialDxe in MdeModulePkg instead of EmbeddedPkg",
2015-11-26), based on the mailing list threads [1] [2] [3].
[1] http://mid.mail-archive.com/1447752930-32880-12-git-send-email-star.zeng@intel.com
[2] http://mid.mail-archive.com/1448243067-1880-12-git-send-email-star.zeng@intel.com
[3] http://mid.mail-archive.com/b748580c-cb51-32c9-acf9-780841ef15da@redhat.com
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Heyi Guo <guoheyi@huawei.com>
Cc: Star Zeng <star.zeng@intel.com>
Originally-suggested-by: Star Zeng <star.zeng@intel.com>
Reported-by: Brijesh Singh <brijesh.singh@amd.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
https://bugzilla.tianocore.org/show_bug.cgi?id=642
Add top level License.txt file with the BSD 2-Clause
License that is used by the majority of the EKD II open
source project content. Merge copyright statements
from the BSD 2-Clause License files in each package
directory and remove the duplication License.txt
file from package directories.
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Andrew Fish <afish@apple.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
https://bugzilla.tianocore.org/show_bug.cgi?id=629
Move Contributions.txt that contains the TianoCore
Contribution Agreement 1.0 to the root of the edk2
repository and remove the duplicate Contributions.txt
files from all packages.
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Andrew Fish <afish@apple.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Commit 7b1dc6c569 'ArmVirtPkg: switch to generic ResetSystemRuntimeDxe'
replaced all references in ArmVirtPkg to the deprecated ResetRuntimeDxe
from EmbeddedPkg with the well maintained generic alternative that lives
in MdeModulePkg.
However, as it turns out, the generic driver has a dependency on the
library class ReportStatusCodeLib, whose default resolution is an
implementation that is not safe for use at runtime, resulting in crashes
when trying to invoke it from the OS.
Since we have no use for status codes in any of the ArmVirtPkg
platforms, let's replace all resolutions with a common one to the NULL
implementation.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
For obscure reasons, ARM platforms use a different implementation of
the ResetSystem() runtime service call than other platforms. So let's
switch all ArmVirtPkg platforms to the generic version instead.
Given that all platforms use an implementation of EfiResetSystemLib [as
consumed by the ResetRuntimeDxe in EmbeddedPkg that we are replacing]
which is unlikely to be depended upon by out of tree platforms, let's
simply modify this library into an implementation of ResetSystemLib
instead [which is what the generic driver in MdeModulePkg consumes]
This does mean we need to update all clients at the same time, which
is why all changes are part of the same patch.
As before, warm reset and platform specific reset are mapped onto
cold reset (which is the only thing PSCI implements, at least the
version we depend on). The new library function EnterS3WithImmediateWake()
is left unimplemented, as permitted by the ResetSystemLib library class.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Remove the functions now provided by TimeBaseLib from
PL031RealTimeClockLib. Add TimeBaseLib resolution to ArmVirtPkg
in same commit to prevent breakage.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Include XenPlatformHasAcpiDtDxe and PlatformHasAcpiDtDxe in the 32-bit
builds too.
Please see https://bugzilla.tianocore.org/show_bug.cgi?id=524
why it is needed. With this patch my arm uefi VM boots.
Fixes: 3a2c1548fe
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Nerijus Baliūnas <nerijus@users.sourceforge.net>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
[lersek@redhat.com: move long subj to commit msg body, add short subj]
[lersek@redhat.com: add Fixes reference]
[lersek@redhat.com: keep ACPI DXE modules grouped in QEMU DSCs]
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Remove the library class resolution for ARM's BdsLib: no included
module actually depends on it, and it will be removed shortly.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Given the agreement on the edk2-devel regarding the fact that the
notion whether or not a 'platform has ACPI' is a universal one, move
the PlatformHasAcpi GUID to MdeModulePkg.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: "Zeng, Star" <star.zeng@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
The relocatable build of ArmVirtQemuKernel is designed to be executed
from RAM, and contains some scratch memory at the start of the image
to use as a stack very early on, and to preserve the DTB image received
from QEMU while it discovers and initializes memory.
It turns out that 8 KB is a bit on the small side here, especially when
executing with secure world emulation enabled, in which case there are
additional nodes present.
So increase the slack space to 32 KB.
While at it, remove a stale Xen reference that was copy/pasted when this
file was created.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
In some cases, (e.g., when running QEMU with TrustZone emulation), the
DT may contain DT nodes whose status is set to 'secure'. Similarly, the
status may be set to 'disabled' if the consumer of the DT image is
expected to treat it as if it weren't there.
So check whether a 'status' property is present, and if so, ignore the
node if the status is not 'okay'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
In some cases, (e.g., when running QEMU with TrustZone emulation), the
DT may contain DT nodes whose status is set to 'secure'. Similarly, the
status may be set to 'disabled' if the consumer of the DT image is
expected to treat it as if it weren't there.
So check whether a 'status' property is present, and if so, ignore the
node if the status is not 'okay'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
In some cases, (e.g., when running QEMU with TrustZone emulation), the
DT may contain memory nodes whose status is set to 'secure'. Similarly,
the status may be set to 'disabled' if the consumer of the DT image is
expected to treat it as if it weren't there.
So check whether a 'status' property is present, and if so, ignore the
node if the status is not 'okay'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
In general, we should not present two separate (and inevitably different)
hardware descriptions to the OS, in the form of ACPI tables and a device
tree blob. For this reason, we recently added the logic to ArmVirtQemu to
only expose the ACPI 2.0 entry point if no DT binary is being passed, and
vice versa.
However, this is arguably a regression for those who relied on DT
descriptions being available, even if the former behavior can be
restored by passing the -no-acpi switch to QEMU.
So allow a secret handshake with the UEFI Shell, to set a variable that
will result in ACPI to be disabled on subsequent boots even if -no-acpi
was not passed on the QEMU command line.
setvar -nv -bs -guid 50bea1e5-a2c5-46e9-9b3a-59596516b00a ForceNoAcpi =01
To delete the variable and revert to the old situation, simply omit the
value after the =
setvar -nv -bs -guid 50bea1e5-a2c5-46e9-9b3a-59596516b00a ForceNoAcpi =
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
ArmCpuLib is never used anywhere, and is about to be removed. So remove
any references from our .DSC files.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The build flag and the FeaturePCD have no effect any longer, remove them.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This will let QEMU's "-no-acpi" option exclusively expose DT vs. ACPI to
the guest. Showing both is never needed (it is actually detrimental to the
adoption of standards, such as SBSA / SBBR).
* Without "-no-acpi", the firmware logs (from PlatformHasAcpiDtDxe)
> Found FwCfg @ 0x9020008/0x9020000
> Found FwCfg DMA @ 0x9020010
> InstallProtocolInterface: [EdkiiPlatformHasAcpi] 0
plus the usual messages. Later the guest kernel logs
> [ 0.000000] efi: SMBIOS 3.0=0x13bdb0000 ACPI 2.0=0x138440000
> MEMATTR=0x13a675018
before it lists the ACPI tables one by one.
In addition, in the guest, the "/sys/firmware/devicetree/*" shell pattern
matches no files, while the "/sys/firmware/acpi/tables/*" pattern matches
the ACPI tables.
* With "-no-acpi", the firmware logs:
> PlatformHasAcpiDtDxe | Found FwCfg @ 0x9020008/0x9020000
> PlatformHasAcpiDtDxe | Found FwCfg DMA @ 0x9020010
> PlatformHasAcpiDtDxe | InstallProtocolInterface:
> PlatformHasAcpiDtDxe | [EdkiiPlatformHasDeviceTree] 0
> FdtClientDxe | OnPlatformHasDeviceTree: exposing DTB @
> FdtClientDxe | 0x13FFBF000 to OS
> ...
> DXE_CORE | Driver [AcpiTableDxe] was discovered but not
> DXE_CORE | loaded!!
> DXE_CORE | Driver [QemuFwCfgAcpiPlatform] was discovered but
> DXE_CORE | not loaded!!
> ...
> RamDiskDxe | RamDiskAcpiCheck: Cannot locate the EFI ACPI
> RamDiskDxe | Table Protocol, unable to publish RAM disks to
> RamDiskDxe | NFIT.
(BootGraphicsResourceTableDxe's ReadyToBoot callback --
InstallBootGraphicsResourceTable() -- handles the lack of
EFI_ACPI_TABLE_PROTOCOL silently.) Later the guest kernel logs
> [ 0.000000] efi: SMBIOS 3.0=0x13bdb0000 MEMATTR=0x138caa018
In addition, in the guest, the "/sys/firmware/devicetree/*" shell pattern
matches the directory "/sys/firmware/devicetree/base", which contains a
large number of DT nodes, while the "/sys/firmware/acpi/tables/*" pattern
matches no files.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1430262
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Replace the dependency on PcdPureAcpiBoot with a Platform Has Device Tree
notification callback. Move the sysconfig table installation from the
entry point function to the callback.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
In this patch, the ACPI protocol / driver chain is enabled dynamically,
when appropriate. This is being done in one larger patch, because
ArmVirt.dsc.inc, where AcpiTableDxe is built, is used by all the platform
DSCs.
No change in behavior should be observable after this patch on any
ArmVirtPkg platform.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This driver produces the EDKII Platform Has ACPI and Platform Has Device
Tree protocols, exactly matching the current ACPI / DT exposure on Xen,
according to ARM vs. AARCH64. At this point it differs from the QEMU
driver PlatformHasAcpiDtDxe in that this one always installs the DT.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This driver produces the EDKII Platform Has ACPI and Platform Has Device
Tree protocols, exactly matching the current ACPI / DT exposure on QEMU,
according to ARM vs. AARCH64, and (in the latter case) to PcdPureAcpiBoot.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This reverts commit 18f6d4df9e.
We realized that DXE drivers that are independent of AcpiPlatformDxe (that
is, independent of QEMU's ACPI generation), such as RamDiskDxe and
BootGraphicsResourceTableDxe, may produce and/or manipulate ACPI tables,
at driver dispatch or even at Ready To Boot.
This makes it unsafe for us to check for ACPI presence in the UEFI system
config table in a Ready To Boot callback, in order to decide about
exposing the DT.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This reverts commit 78c41ff519.
We realized that DXE drivers that are independent of AcpiPlatformDxe (that
is, independent of QEMU's ACPI generation), such as RamDiskDxe and
BootGraphicsResourceTableDxe, may produce and/or manipulate ACPI tables,
at driver dispatch or even at Ready To Boot.
This makes it unsafe for us to check for ACPI presence in the UEFI system
config table in a Ready To Boot callback, in order to decide about
exposing the DT.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Currently, the file GUID reference of the UEFI Shell app is indirected
via the PCD gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdShellFile,
which is set to a fixed value for our platforms.
So instead, use the new symbolic GUID added for this purpose, and drop
the reference to this PCD, and to the IntelFrameworkModulePkg package
entirely.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Instead of looking at the PCD gArmTokenSpaceGuid.PcdSystemMemoryBase
to decide which DT node covers the memory we are already using, query
the GCD memory space map, which is the authoritative source for this
kind of information
This fixes a problem observed by Michael on platforms where this PCD
is of the 'Patchable' type, which means updates to its value do not
propagate to other modules.
Reported-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Instead of invoking gDS->SetMemorySpaceAttributes to set the EFI_MEMORY_XP
attribute on newly added regions, which is guaranteed to fail if the same
attribute was not declared as a capability of the region when it as added,
invoke the CPU arch protocol directly to set the EFI_MEMORY_XP attribute
if our memory protection policy demands it.
Reported-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
At this point we're ready to retire QemuFwCfgS3Enabled() from the
QemuFwCfgLib class, together with its implementations in:
- ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
- OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
Extend all modules that call the function with a new QemuFwCfgS3Lib class
dependency. Thanks to the previously added library class, instances, and
class resolutions, we can do this switch now as tightly as possible.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=394
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
QemuFwCfgS3Enabled() in "ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c"
returns constant FALSE.
The same implementation is now available factored-out in
"OvmfPkg/Library/QemuFwCfgS3Lib/QemuFwCfgS3Base.c".
Resolve QemuFwCfgS3Lib to BaseQemuFwCfgS3LibNull.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=394
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Instead of having a build time switch to prevent the FDT configuration
table from being installed, make this behavior dependent on whether we
are passing ACPI tables to the OS. This is done by looking for the
ACPI 2.0 configuration table, and only installing the FDT one if the
ACPI one cannot be found.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Defer FDT configuration table installation until ReadyToBoot is signaled.
This allows any driver to make modifications in the mean time, and will
also allow us to defer the decision of whether to install it in the first
place to later on in the boot.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Disable the PL031 RTC DT node unconditionally rather than only when
the DT will be exposed to the OS. This allows us to defer the decision
whether to expose it to the OS to a later time without creating an
additional dependency on the FDT client code by the RTC driver.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Include DXE_CORE in the BuildOptions that are set to force 4 KB section
alignment for PE/COFF images in order to allow them to be mapped with
strict memory permissions.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Now that ARM has grown support for managing memory permissions in
ArmMmuLib, we can enable the non-executable DXE stack for all virt
platforms. Note that this includes the AARCH64 Xen platform as well.
Note that this is not [entirely] redundant: the non-executable stack
is configured before DxeCore is invoked. The image and memory protection
features configured during DXE only take affect when the CPU arch
protocol implementation is registered.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Like for AARCH64, enable PE/COFF image and NX memory protection for all
32-bit ARM virt platforms.
Note that this does not [yet] protect EfiLoaderData regions, due to
compatibility issues with GRUB.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This sets the recently introduced PCD PcdDxeNxMemoryProtectionPolicy to
a value that protects all memory regions except code regions against
inadvertent execution.
Note that this does not [yet] protect EfiLoaderData regions, due to
compatibility issues with shim and GRUB.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Recent changes to ShellPkg require a resolution for UefiBootManagerLib
for all platforms in ArmVirtPkg. So move the resolution to the shared
include ArmVirt.dsc.inc.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Using DxeServices::SetMemorySpaceAttributes to set cacheability
attributes has the side effect of stripping permission attributes,
given that those are bits in the same bitfield, and so setting the
Attributes argument to EFI_MEMORY_WB implies not setting EFI_MEMORY_XP
or EFI_MEMORY_RO attributes.
In fact, the situation is even worse, given that the descriptor returned
by DxeServices::GetMemorySpaceDescriptor does not reflect the permission
attributes that may have been set by the preceding call to
DxeServices::AddMemorySpace if PcdDxeNxMemoryProtectionPolicy has been
configured to map EfiConventionalMemory with non-executable permissions.
Note that this applies equally to the non-executable stack and to PE/COFF
sections that may have been mapped with R-X or RW- permissions. This is
due to the ambiguity in the meaning of the EFI_MEMORY_RO/EFI_MEMORY_XP
attributes when used in the GCD memory map, i.e., between signifying
that an underlying RAM region has the controls to be configured as
read-only or non-executable, and signifying that the contents of a
certain UEFI memory region allow them to be mapped with certain
restricted permissions.
So let's check the policy in PcdDxeNxMemoryProtectionPolicy directly,
and set the EFI_MEMORY_XP attribute if appropriate for
EfiConventionalMemory regions.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This removes the PCD PcdArmUncachedMemoryMask from ArmPkg, along with
any remaining references to it in various platform .DSC files. It is
no longer used now that we removed the virtual uncached pages protocol
and the associated DebugUncachedMemoryAllocationLib library instance.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
The only observeable effect of having PcdPerformanceLibraryPropertyMask
set to 1 is that a EfiReservedMemory region of 4 pages is allocated right
below the 4 GB mark. This region is out of bounds for the OS, which means
it is not even allowed to map it, to avoid speculative loads from it.
On Linux, this may prevent the kernel from using a 1 GB block mapping for
this region, and instead it has to carve up the block as follows:
0xffffffff80000000-0xffffffffbe000000 992M PMD CON BLK
0xffffffffbe000000-0xffffffffbfe00000 30M PMD BLK
0xffffffffbfe00000-0xffffffffbfff0000 1984K PTE CON
0xffffffffbfff0000-0xffffffffbfffc000 48K PTE
where it would otherwise use a single 1 GB mapping (*), i.e.,
0xffffffff80000000-0xffffffffc0000000 1G PGD
To clarify, the latter is a single 8 byte entry in the top level page
table, whereas in the former case, we have two additional levels of
paging, requiring two extra 4 KB pages (on a 4 KB pagesize kernel).
The real cost, however, is the TLB footprint, which goes up from a
single entry to a number between 90 and 1020, depending on whether
contiguous hints are honoured by the hardware.
So let's remove PcdPerformanceLibraryPropertyMask until we find a reason
why we need it.
(*) provided that no other allocations were deliberately located right
below the 4 GB mark, and that we are running with more than 3 GB of
memory, in which case most allocations will be over 4 GB, given EDK2's
default top-down allocation policy.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The OpensslLibCrypto library instance (which does not contain libssl
functions) is sufficient for the Secure Boot feature. It would not be
sufficient for HTTPS booting (which requires TLS), but in ArmVirtPkg, we
don't even enable plaintext HTTP booting for the time being.
Ease security analysis by excluding libssl functionality from the
OpensslLib instance we use.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Tomas Hoger <thoger@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Enable the new DXE image protection for all image, i.e., FV images but
also external images that originate from disk or the network, such as
OS loaders.
This complements work that is underway on the arm64/Linux kernel side,
to emit the OS loader with 4 KB section alignment, and a suitable split
between code and data.
http://marc.info/?l=linux-arm-kernel&m=148655557227819
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The debug implementation of the UncachedMemoryAllocationLib library
class relies on the creation of an uncached alias of a memory range,
while keeping the original cached mapping, but with read-only attributes
to trap inadvertent write accesses.
This is not a terribly good idea, given that the ARM architecture does
not allow mismatched attributes, and so creating them deliberately is
not something we should encourage by doing it in reference code.
So remove the library, and replace all references to it with a reference
to the non-debug version (unless the platform does not require a resolution
for it in the first place, in which case all UncachedMemoryAllocationLib
references can be removed altogether).
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
We are now sufficiently equipped to implement the new QemuFwCfgSkipBytes()
API.
The previous patch and this one enable ArmVirtPkg/QemuFwCfgLib to
overwrite part of a writeable fw_cfg file, which will be particularly
useful for the upcoming QEMU_LOADER_WRITE_POINTER command in
OvmfPkg/AcpiPlatformDxe.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
We use the "InternalQemuFwCfgReadBytes" static function pointer to
dispatch the reading of fw_cfg bytes between MMIO and DMA. This pointer is
initialized to MMIO, and we set it to DMA in the library constructor if
DMA is available.
Unlike the above, we write fw_cfg bytes only with MMIO at the moment.
Extend the write functionality so that it follows the read pattern:
- introduce the new function typedef WRITE_BYTES_FUNCTION,
- extract the current (MMIO-only) write internals from
QemuFwCfgWriteBytes() to MmioWriteBytes(),
- provide a DMA-based implementation in DmaWriteBytes() -- a thin wrapper
around DmaTransferBytes(),
- set the new static function pointer "InternalQemuFwCfgWriteBytes"
according to the DMA feature provided by QEMU,
- In QemuFwCfgWriteBytes(), call the best available method through
"InternalQemuFwCfgWriteBytes".
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
The DmaReadBytes() function that we currently use only for reading --
through the InternalQemuFwCfgReadBytes function pointer, in case the DMA
interface is available -- is suitable with minimal changes for two more
operations provided by the DMA interface, WRITE and SKIP. Expose the
Control parameter in the function prototype, rename the function to
DmaTransferBytes(), and rebase DmaReadBytes() to it.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
While debugging OS for ACPI BGRT support (especially on VMs),
it is very useful to have the EFI firmware to export the
ACPI BGRT table.
This patch tries to add this support in ArmVirtPkg.
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
InternalQemuFwCfgIsAvailable() is an API that is incorrectly exposed by
the "OvmfPkg/Include/Library/QemuFwCfgLib.h" library class header; the API
is meant to be used internally to library instances (if it's needed at
all). ArmVirtPkg's instance has no use for it actually, so simplify the
code and remove the function definition.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
These are deprecated / disabled under the
DISABLE_NEW_DEPRECATED_INTERFACES feature test macro.
Introduce a variable called PcdStatus, and use it to assert the success of
these operations (there is no reason for them to fail here).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=165
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # RVCT
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Recording the top of SEC visible system memory in a global variable is
not necessary, and violates the constraints of the SEC/PEI environment,
given that it may execute from NOR flash. So remove it.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Since All the GIC base address variables has been aligned to 64-bit, it
doesn't make sense to continue use MAX_UINT32 in ASSERT() statement, so
this patch uses MAX_UINTN to adapt to this kind of change.
Contributed-under: TianoCore Contribution Agreement 1.0
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Dennis Chen <dennis.chen@arm.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
The entry point function of any UEFI_DRIVER that conforms to the UEFI
driver model must install an instance of the EFI_DRIVER_BINDING_PROTOCOL
on the image handle. Beyond that, the following protocols are optional:
- EFI_COMPONENT_NAME_PROTOCOL
- EFI_COMPONENT_NAME2_PROTOCOL
- EFI_DRIVER_CONFIGURATION_PROTOCOL
- EFI_DRIVER_CONFIGURATION2_PROTOCOL
- EFI_DRIVER_DIAGNOSTICS_PROTOCOL
- EFI_DRIVER_DIAGNOSTICS2_PROTOCOL
The UefiLib functions
- EfiLibInstallAllDriverProtocols()
- EfiLibInstallAllDriverProtocols2()
- EfiLibInstallDriverBindingComponentName2()
are convenience helpers for such UEFI_DRIVERs. They simplify the
installation of the above protocols.
The UefiLib instance in "MdePkg/Library/UefiLib/UefiDriverModel.c" allows
platforms to control these functions through the MdePkg feature PCDs
- PcdComponentNameDisable
- PcdComponentName2Disable
- PcdDriverDiagnosticsDisable
- PcdDriverDiagnostics2Disable
If any of these PCDs are set to TRUE, then the helper functions will not
install the corresponding protocol interfaces on the image handle, even if
the driver passes in non-NULL protocol interfaces.
In other words, at build time, a platform can forcibly prevent all drivers
that employ UefiLib from producing these protocols.
In ArmVirtPkg, that's what we've been doing forever, for no reason at all.
This is why we haven't been seeing component and driver names from the DH,
DEVICES, DRIVERS and DEVTREE shell commands, unlike in OvmfPkg.
The default value for all these PCDs is FALSE, in "MdePkg/MdePkg.dec".
Revert ArmVirtPkg to the sane defaults.
This bug dates back to the inception of ArmVirtPkg (called
ArmPlatformPkg/ArmVirtualizationPkg at the time).
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: 6f5872b1f4
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
One of the following patches will change QemuVideoDxe driver
to use the new FrameBufferLib.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek at redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Prototype of BootLogoEnableLogo will change in following patches, so
do not call BootLogoEnableLogo to avoid build failure.
Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
The BaseMemoryLibStm implementation under ArmPkg/ is being deprecated,
in favor of the generic versions under MdePkg, now that ARM and AARCH64
support has been added to both the generic C version (BaseMemoryLib) and
the accelerated version (BaseMemoryLibOptDxe). The latter uses unaligned
accesses and special cache maintenance instructions, and can therefore
not be used when the MMU is off.
So move to BaseMemoryLibOptDxe for the DXE phase and later, and to the
generic BaseMemoryLib before that.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Use the FDT client protocol rather than parsing the DT directly using
fdtlib. While we're at it, update the code so it deals correctly with
memory nodes that describe multiple disjoint regions in their "reg"
properties, and make the code work with #address-cells/#size-cells
properties of <1> as well as <2>.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Add high level methods to iterate over all 'reg' properties of all DT
nodes whose device_type properties have the value "memory". Since we are
modifying the FdtClient protocol, update the protocol and the only existing
implementation at the same time.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The FDT client protocol methods dealing with "reg" properties return
the size of a "reg" element. Currently, we have hardcoded this as '8',
since #address-cells == #size-cells == 2 in most cases. However, for
different values, have a single 'reg' element size is not unambiguous,
since - however unlikely - if #address-cells != #size-cells, we do not
know which is which.
So before adding more methods to the protocol, fix up this oversight.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Currently, the code in FdtClientDxe assumes #address-cells/#size-cells
values of <2>. Since DT "reg" properties always consist of <base, size>
tuples, this means the size of the entire property should always be a
multiple of 16 bytes (i.e, 4 * sizeof(UINT32), not 8. So fix this.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
When parsing the device tree to find the memory node, we are still running
with the MMU off, which means unaligned memory accesses are not allowed.
Since the FDT only mandates 32-bit alignment, 64-bit quantities are not
guaranteed to appear naturally aligned, and so should be accessed using
32-bit accesses instead.
Reported-by: Julien Grall <julien.grall@arm.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
In general, on an ARM system, mapping normal memory as device memory may
have unintended side effects, given that unaligned accesses or loads and
stores with special semantics (e.g., load/store exclusive) may fault or
may not work as expected.
Under KVM, the situation is even worse, since the host may not expect the
guest to perform uncached accesses, and so writes to such an uncached
region may get lost completely.
Since the only safe mapping type under KVM is EFI_MEMORY_WB, remove all
other memory type attributes.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The various ArmLib flavors are identical in practice, and a new
ArmBaseLib has been introduced that can replace all of them. So replace
all occurrences with ArmBaseLib.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
According to the ACPI 6.0/6.1 spec, the physical base address of GICC,
GICD, GICR and GIC ITS is 64-bit. So change the type of the various GIC
base address PCDs to 64-bit, and fix up all users.
Contributed-under: TianoCore Contribution Agreement 1.0
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Dennis Chen <dennis.chen@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Now that the PCI root bridge driver and various host controller drivers
have been fixed, remove the 4 GB limit on PCI DMA allocation for QEMU's
ECAM PCI host bridge.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
GCC 4.8 in RELEASE mode complains about GetPciIoTranslation () potentially
not assigning IoTranslation, but does not notice that it returns failure in
this case, which means IoTranslation is never referenced *unless* it has
been assigned. So simply set IoTranslation to zero to help the compiler.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This code is now no longer used, so remove it.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
If the pci-host-ecam-generic DT node describes a 64-bit MMIO region,
account for it in the PCI_ROOT_BRIDGE description that we return to
the generic PciHostBridgeDxe implementation, which will be able to
allocate BARs from it without any further changes.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
Wire up the FdtPciHostBridgeLib introduced in the previous patch
to the generic PciHostBridgeDxe implementation, and drop the special
ArmVirtPkg version. The former's dependency on gEfiCpuIo2ProtocolGuid
is satisfied by adding ArmPciCpuIo2Dxe.inf as well, and adding the PCD
gArmTokenSpaceGuid.PcdPciIoTranslation as a dynamic PCD.
In terms of functionality, no changes are intended.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
Implement PciHostBridgeLib for DT platforms that expose a PCI root bridge
via a pci-host-ecam-generic DT node. The DT parsing logic is copied from
the PciHostBridgeDxe implementation in ArmVirtPkg, with the one notable
difference that we don't set some of the legacy PCI attributes for IDE
and VGA I/O ranges.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
Add handling of the PcdPciIoTranslation PCD, so that modules that include
this library via NULL resolution are guaranteed that it will be set before
they reference it.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
Setting the linux,pci-probe-only was intended to align OSes booting via
DT with OSes booting via ACPI in the way they honor the PCI configuration
performed by the firmware. However, ACPI on arm64 does not currently honor
the firmware's PCI configuration, and the linux,pci-probe-only completely
prevents any PCI reconfiguration from occurring under the OS, including
what is needed to support PCI hotplug.
Since the primary use case was OS access to the GOP framebuffer (which
breaks when the framebuffer BAR is moved when the OS reconfigures the
PCI), we can undo this change now that ArmVirtQemu has moved to a GOP
implementation that does not expose a raw framebuffer in the first place.
This effectively reverts commit 8b816c624d ("ArmVirtPkg/VirtFdtDxe: set
/chosen/linux,pci-probe-only to 1 in DTB")
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=65
In ARM/AARCH64 guests that run on KVM, we can now use virtio-gpu-pci, so
PcdKludgeMapPciMmioAsCached is no longer necessary. Standard VGA continues
to work on TCG without the kludge.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=66
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
At this stage, the driver builds, and suffices for testing binding and
unbinding.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Ref: https://tianocore.acgmultimedia.com/show_bug.cgi?id=66
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Since we now have EBC support for AArch64, enable it by default
on both QEMU and Xen platforms.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Added missing dependency of FileExplorerLib, which was causing
build error for ArmVirtXen, due to inclusion of ramdisk support.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Vikas C Sajjan <vikas.cha.sajjan@hpe.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Adds the RAMDisk support to ArmVirtPkg platforms.
This patch actually ports OvmfPkg commit 259d87146b to
ArmVirtPkg.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Vikas C Sajjan <vikas.cha.sajjan@hpe.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Since ArmVirt.dsc.inc is included in all the ArmVirt dsc files,
move inclusion of AcpiTableDxe.inf to ArmVirt.dsc.inc.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Vikas C Sajjan <vikas.cha.sajjan@hpe.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This updates all assembly source files under ArmVirtPkg to mark
exported functions as ASM_FUNC(), which puts them in a separate
section, allowing the linker to prune code that is left unused.
At the same time, clean up the code to get rid of LoadConstantToReg()
instances involving symbol references, each of which emits an absolute
literal, and hence and entry in the PE/COFF .reloc table.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
The ArmVirtPkg platforms that use PrePi have no notion of boot remapped
aliases, so we can simply jump to CEntryPoint() directly rather than
via an absolute reference.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Both the ARM and the AARCH64 versions of the PrePi code (shared between
ArmVirtQemuKernel and ArmVirtXen) 'preserve' values across a function
call using registers that are not in fact callee saved. So fix that.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
The clang developers have made a backward incompatible change to the
command line arguments, and have replaced '-mllvm -arm-use-movt=0'
with '-mno-movt'. This does not matter for most ARM platforms, and
therefore it has been removed from the default CLANG35/ARM CC flags
in patch 1c63516075 ("BaseTools CLANG35: drop problematic use-movt
and save-temps options"), but as it turns out, the relocatable PrePi
implementation used by ArmVirtQemuKernel and ArmVirtXen will fail to
build if it contains MOVT/MOVW pairs, due to the fact that these are
not runtime relocatable under ELF.
Since they are runtime relocatable under PE/COFF, and GenFw does the
right thing when encountering them, selectively controlling their
use is more appropriate than disabling them altogether. Therefore,
this patch adds the -mno-movt argument only for the platforms that
use the relocatable PrePi, and only for the module types that may
be pulled into its build.
In addition, switch to the SEC type version of ArmLib, so that
the relocatable PrePi only depends on BASE and SEC type libraries.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Commit b89919ee8f ("BaseTools AARCH64: override XIP module linker
alignment to 32 bytes") updated the various AARCH64 toolchain definitions
to allow SEC, PEI_CORE and PEIM modules to be built with minimal alignment
requirements even when using the AArch64 small code model which normally
requires 4 KB section alignment.
This involves conversion of ADRP instructions into ADR instructions, which
can only be done reliably if the ELF and the PE/COFF sections appear at
the same offset modulo 4 KB.
The ArmVirtPrePiUniCoreRelocatable linker script did not yet take this
into account, so update it by starting the .text section at the next
appropriately aligned offset PECOFF_HEADER_SIZE bytes into the image.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
To accommodate upcoming GCCx toolchain versions that require 'gcc' to
be used as the linker in order to support LTO, switch GCC44 and later
(including CLANG35) to a new DLINK build rule that invokes 'gcc' as the
linker instead of 'ld'. Since gcc expects its command line arguments in
a different format, and expects arguments that it needs to pass to the
linker to be prefixed with '-Wl,', this involves changes to most of the
DLINK_FLAGS definitions in tools_def.template, as well as some changes to
module .INF files that set their own linker options.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Newer versions of ld automatically emit .gnu.hash and .note.gnu.build-id
sections, which are not listed in the linker script, and will end up
breaking the build with an allocation conflict, e.g.,
/usr/bin/aarch64-linux-gnu-ld: section .note.gnu.build-id loaded at
[0000000000000000,0000000000000023] overlaps section .text loaded at
[0000000000000000,0000000000017dbf]
Since we don't require or care about these sections, update the linker
script so that they are discarded. Note that this involves emitting the
.note.gnu.build-id section into a non-allocatable segment to prevent the
linker from noticing that it is being discarded (and subsequently
complaining about it)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
(This patch ports OvmfPkg commit 2eb3589860 to ArmVirtPkg. That
functionality was not added to QemuBootOrderLib, because it was (and is)
independent from QEMU and fw_cfg.)
Remove any boot options that point to binaries built into the firmware and
have become stale due to any of the following:
- FvMain's base address or size changed (historical -- see commit
e191a3114f),
- FvMain's FvNameGuid changed,
- the FILE_GUID of the pointed-to binary changed,
- the referenced binary is no longer built into the firmware.
For example, multiple such "EFI Internal Shell" boot options can coexist.
They technically differ from each other, but may not describe any built-in
shell binary exactly. Such options can accumulate in a varstore over time,
and while they remain generally bootable (thanks to the efforts of
BmGetFileBufferByFvFilePath()), they look bad.
Filter out any stale options.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: https://github.com/tianocore/edk2/issues/107
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ard Biesheuvel
Laszlo Ersek
Michael D Kinney
Leif Lindholm
Nerijus Baliūnas
Bhupesh Sharma
Star Zeng
Ruiyu Ni
Dennis Chen
Vikas C Sajjan