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* ArmVirtPkg: Drop incorrect reference to LzmaDecompressLibArd Biesheuvel2024-08-301-1/+1
| | | | | | | | | | | LzmaDecompressLib does not exist as a library class, and the library implementation that is usually referenced in this context is intended to be incorporated using NULL library class resolution. Let's fix this so that we can drop the reference to LzmaDecompressLib. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmVirtPkg: drop use of PcdArmArchTimerFreqInHzLeif Lindholm2024-06-261-5/+0
| | | | | | | | | | PcdArmArchTimerFreqInHz lets platforms override the architectural timer frequency, but this really isn't supported in hardware by anything lower than EL3. Setting it to 0 skips the override - but that is also the default. So drop the explicit setting in ArmVirtPkg platforms in preparation for deleting the Pcd completely. Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg: Revert "Allow SMC/HVC monitor conduit to be specified at runtime"Ard Biesheuvel2024-06-101-2/+0
| | | | | | | | | This reverts commit 32460bb5b17b5caec29037a4e9462ca149a190e6, which is no longer needed as ArmVirtQemu now has its own special implementation for ArmMonitorLib. Continuous-integration-options: PatchCheck.ignore-multi-package Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
* ArmVirtPkg: Move PcdMonitorConduitHvcFlickdm2024-05-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | This moves the PcdMonitorConduitHvc from PcdsFeatureFlag.Common to PcdsFixedAtBuild.Common This is a follow on to the previous commit: ArmPkg: Allow SMC/HVC monitor conduit to be specified at runtime ArmVirtQemu may execute at EL2, in which case monitor calls are generally made using SMC instructions instead of HVC instructions. Whether or not this is the case can only be decided at runtime, and so the associated PCD needs to be settable at runtime, if the platform definition chooses so. This implies a boolean PCD, given that a feature PCD is build-time configurable only. Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmVirtPkg: Enable CpuMmio2DxeChao Li2024-02-061-1/+1
| | | | | | | | | | | | | | | | CpuMmio2Dxe is supports MMIO, enable it. Build-tested only (with "ArmVirtQemu.dsc"). BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Sami Mujawar <sami.mujawar@arm.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Chao Li <lichao@loongson.cn> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* ArmVirtPkg: Move PCD of FDT base address and FDT padding to OvmfPkgChao Li2024-02-061-1/+1
| | | | | | | | | | | | | | | | | | | | | Moved PcdDeviceTreeInitialBaseAddress and PcdDeviceTreeAllocationPadding to OvmfPkg for easier use by other architectures. Build-tested only (with "ArmVirtQemu.dsc"). BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Sami Mujawar <sami.mujawar@arm.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Signed-off-by: Chao Li <lichao@loongson.cn> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* ArmVirtPkg: steer DebugLib output away from SerialPortLib+console trafficLaszlo Ersek2023-10-261-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the RELEASE target, all ArmVirtPkg DSCs inherit BaseDebugLibNull from "ArmVirt.dsc.inc"; keep that. For NOOPT and DEBUG: - switch the lib class resolution pair (BaseDebugLibSerialPort + FdtPL011SerialPortLib) that is set as the default for all module types in "ArmVirt.dsc.inc" to DebugLibFdtPL011UartRam; - switch the lib class resolution pair (BaseDebugLibSerialPort + EarlyFdtPL011SerialPortLib) that is set as an override for SEC, PEI_CORE, PEIM modules in "ArmVirt.dsc.inc" to DebugLibFdtPL011UartFlash; - switch the lib class resolution pair (DxeRuntimeDebugLibSerialPort + FdtPL011SerialPortLib) that is set as an override for DXE_RUNTIME_DRIVER modules in "ArmVirt.dsc.inc" to DxeRuntimeDebugLibFdtPL011Uart; - mask all of the above DebugLib class resolution changes in "ArmVirtKvmTool.dsc", because "ArmVirtKvmTool.dsc" uses BaseSerialPortLib16550 rather than PL011 UARTs, - mask all of the above DebugLib class resolution changes in "ArmVirtXen.dsc" too, because "ArmVirtXen.dsc" uses XenConsoleSerialPortLib rather than PL011 UARTs. I regression-tested this change for "ArmVirtKvmTool.dsc" and "ArmVirtXen.dsc" by building them for both DEBUG and RELEASE, both before the patch and after, and comparing the edk2 build report files (focusing on lib class resolutions). There are no changes. Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Julien Grall <julien@xen.org> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20231008153912.175941-10-lersek@redhat.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=4577 [lersek@redhat.com: add TianoCore BZ reference]
* ArmVirtPkg: handle virtual EL2 timer in DTLeif Lindholm2023-09-191-0/+1
| | | | | | | | | | | | | | | | | | | FEAT_VHE, introduced in ARMv8.1, adds a virtual EL2 timer. However, this library verifies that exactly 3 or 4 12-byte timer interrupts are provided in input DT, ASSERTing when the new timer is added. Change the assert to >= 36. Extend the current logic, also initializing PcdArmArchTimerHypVirtIntrNum if 5 interrupts are provided. Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com> Reported-by: Peter Maydell <peter.maydell@linaro.org> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Peter Maydell <peter.maydell@linaro.org>
* ArmVirtPkg: Dispatch variable service if variable emulation is enabledSami Mujawar2023-05-291-1/+4
| | | | | | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg: Define variables for emulating runtime variablesSami Mujawar2023-05-291-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* ArmVirt: don't use unaligned CopyMem () on NOR flashGerd Hoffmann2023-01-161-1/+5
| | | | | | | | | | | | | | | | | Commit 789a72328553 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: 789a72328553 ("OvmfPkg/VirtNorFlashDxe: use EFI_MEMORY_WC and drop AlignedCopyMem()") Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmVirtPkg: Kvmtool: Add RNG support using Arm TRNG interfaceSami Mujawar2022-11-061-0/+10
| | | | | | | | | | | | | | 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>
* ArmVirtPkg/ArmVirtKvmTool: Migrate to OVMF's VirtNorFlashDxeArd Biesheuvel2022-10-271-2/+2
| | | | | | | | 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>
* ArmVirtPkg/ArmVirtKvmTool: wire up configurable timeoutArd Biesheuvel2022-02-251-2/+3
| | | | | | | | | | | | | 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>
* ArmVirtPkg/Kvmtool: Enable AcpiviewSami Mujawar2022-02-011-1/+4
| | | | | | | | | | | | | 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>
* ArmVirtPkg/Kvmtool: Enable ACPI supportSami Mujawar2022-02-011-3/+14
| | | | | | | | | | | | | | | 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>
* OvmfPkg/BaseCachingPciExpressLib: Migrate BaseCachingPciExpressLibAbner Chang2022-01-291-3/+3
| | | | | | | | | | | | | | | 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>
* ArmVirtPkg/VirtioFdtDxe: Relocate VirtioFdtDxe to OvmfPkg/FdtAbner Chang2021-10-141-1/+1
| | | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg/FdtPciHostBridgeLib: Relocate FdtPciHostBridgeLib to OvmfPkg/FdtAbner Chang2021-10-141-1/+1
| | | | | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg/HighMemDxe: Relocate HighMemDxe to OvmfPkgAbner Chang2021-10-141-1/+1
| | | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg/FdtPciPcdProducerLib: Relocate PciPcdProducerLib to OvmfPkgAbner Chang2021-10-141-4/+4
| | | | | | | | | | | | | | | | | | | | | 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>
* ArmPkg: Use PcdPciIoTranslation PCD from MdePkgAbner Chang2021-10-141-1/+1
| | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg/FdtClintDxe: Move FdtClientDxe to EmbeddedPkgAbner Chang2021-10-141-1/+1
| | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg: Enable PCIe support for KvmtoolSami Mujawar2021-06-221-2/+33
| | | | | | | | | | 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>
* ArmVirtPkg: Consume MdeLibs.dsc.inc for RegisterFilterLibDandan Bi2021-03-311-0/+2
| | | | | | | | | | | | | | | | | | | 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>
* ArmVirtPkg: Refactor with PciHostBridgeUtilityLibJiahui Cen via groups.io2021-01-201-0/+1
| | | | | | | | | | | | | | | | 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>
* ArmVirtPkg: Support for kvmtool virtual platformSami Mujawar2020-10-161-0/+321
Kvmtool is a virtual machine manager that enables hosting KVM guests. Kvmtool emulates certain devices like serial port, RTC, etc. essentially providing a virtual platform. This patch adds support for kvmtool virtual platform. Following is a brief description of the firmware implementation choices: - Serial Port: 16550 UART On some platforms the 16550 UART is interfaced using PCI. Therefore, the 16550 Serial port library is dependent on the PCI library. The 16550 UART driver checks the Device ID represented using the PCD gEfiMdeModulePkgTokenSpaceGuid.PcdSerialPciDeviceInfo to determine if the UART is behind PCI. If the Device ID is 0xFF then the serial 16550 UART is not behind PCI. On Kvmtool the Serial 16550 UART is not behind PCI, and therefore a combination of BasePciLibPciExpress and BasePciExpressLib is used to satisfy the PCI library dependency. The PcdSerialPciDeviceInfo is also set to 0xFF to indicate that the Serial 16550 UART is not behind PCI. The PCD PcdSerialUseMmio is also set to TRUE to indicate MMIO accesses are required for the UART registers. Additionally two instances of PlatformHookLibs are provided EarlyFdt16550SerialPortHookLib and Fdt16550SerialPortHookLib to patch the PcdSerialRegisterBase so that BaseSerialPortLib16550 and retrieve the base address of the 16550 UART. - Dependency order for Flash FaultTolerantWriteDxe makes use of PCDs (e.g. PcdFlashNvStorageFtwSpareBase64 etc.), which in case of kvmtool will be evaluated based on the CFI flash base address read from the DT. These variables are populated in the NorFlashPlatformLib loaded by ArmVeNorFlashDxe. This results in a dependency issue with FaultTolerantWriteDxe. To resolve this make the NorFlashPlatformLib as a library dependency for FaultTolerantWriteDxe. - RTC Controller A separate patch updates the MC146818 RTC controller driver to support MMIO accesses. A KvmtoolRtcFdtClientLib has been introduced to extract the base addresses of the RTC controller from the platform device tree and map the RTC register space as Runtime Memory. Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
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