Create an SEV-ES workarea PCD. This PCD will be used for BSP communication
during SEC and for AP startup during PEI and DXE phases, the latter is the
reason for creating it in the UefiCpuPkg.
Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
The SEV support will clear the C-bit from non-RAM areas. The early GDT
lives in a non-RAM area, so when an exception occurs (like a #VC) the GDT
will be read as un-encrypted even though it is encrypted. This will result
in a failure to be able to handle the exception.
Move the GDT into RAM so it can be accessed without error when running as
an SEV-ES guest.
Allocate memory for the GHCB pages and the per-CPU variable pages during
SEV initialization for use during Pei and Dxe phases. The GHCB page(s)
must be shared pages, so clear the encryption mask from the current page
table entries. Upon successful allocation, set the GHCB PCDs (PcdGhcbBase
and PcdGhcbSize).
The per-CPU variable page needs to be unique per AP. Using the page after
the GHCB ensures that it is unique per AP. Only the GHCB page is marked as
shared, keeping the per-CPU variable page encyrpted. The same logic is
used in DXE using CreateIdentityMappingPageTables() before switching to
the DXE pagetables.
The GHCB pages (one per vCPU) will be used by the PEI and DXE #VC
exception handlers. The #VC exception handler will fill in the necessary
fields of the GHCB and exit to the hypervisor using the VMGEXIT
instruction. The hypervisor then accesses the GHCB associated with the
vCPU in order to perform the requested function.
Protect the memory used by an SEV-ES guest when S3 is supported. This
includes the page table used to break down the 2MB page that contains
the GHCB so that it can be marked un-encrypted, as well as the GHCB
area.
Regarding the lifecycle of the GHCB-related memory areas:
PcdOvmfSecGhcbPageTableBase
PcdOvmfSecGhcbBase
(a) when and how it is initialized after first boot of the VM
If SEV-ES is enabled, the GHCB-related areas are initialized during
the SEC phase [OvmfPkg/ResetVector/Ia32/PageTables64.asm].
(b) how it is protected from memory allocations during DXE
If S3 and SEV-ES are enabled, then InitializeRamRegions()
[OvmfPkg/PlatformPei/MemDetect.c] protects the ranges with an AcpiNVS
memory allocation HOB, in PEI.
If S3 is disabled, then these ranges are not protected. DXE's own page
tables are first built while still in PEI (see HandOffToDxeCore()
[MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c]). Those tables are
located in permanent PEI memory. After CR3 is switched over to them
(which occurs before jumping to the DXE core entry point), we don't have
to preserve PcdOvmfSecGhcbPageTableBase. PEI switches to GHCB pages in
permanent PEI memory and DXE will use these PEI GHCB pages, so we don't
have to preserve PcdOvmfSecGhcbBase.
(c) how it is protected from the OS
If S3 is enabled, then (b) reserves it from the OS too.
If S3 is disabled, then the range needs no protection.
(d) how it is accessed on the S3 resume path
It is rewritten same as in (a), which is fine because (b) reserved it.
A GHCB page is needed during the Sec phase, so this new page must be
created. Since the #VC exception handler routines assume that a per-CPU
variable area is immediately after the GHCB, this per-CPU variable area
must also be created. Since the GHCB must be marked as an un-encrypted,
or shared, page, an additional pagetable page is required to break down
the 2MB region where the GHCB page lives into 4K pagetable entries.
Create a new entry in the OVMF memory layout for the new page table
page and for the SEC GHCB and per-CPU variable pages. After breaking down
the 2MB page, update the GHCB page table entry to remove the encryption
mask.
The GHCB page will be used by the SEC #VC exception handler. The #VC
exception handler will fill in the necessary fields of the GHCB and exit
to the hypervisor using the VMGEXIT instruction. The hypervisor then
accesses the GHCB in order to perform the requested function.
Four new fixed PCDs are needed to support the SEC GHCB page:
- PcdOvmfSecGhcbBase UINT32 value that is the base address of the
GHCB used during the SEC phase.
- PcdOvmfSecGhcbSize UINT32 value that is the size, in bytes, of the
GHCB area used during the SEC phase.
- PcdOvmfSecGhcbPageTableBase UINT32 value that is address of a page
table page used to break down the 2MB page into
512 4K pages.
- PcdOvmfSecGhcbPageTableSize UINT32 value that is the size, in bytes,
of the page table page.
When SEV-ES is enabled, then SEV is also enabled. Add support to the SEV
initialization function to also check for SEV-ES being enabled, and if
enabled, set the SEV-ES enabled PCD (PcdSevEsIsEnabled).
Under SEV-ES, a DR7 read or write intercept generates a #VC exception.
The #VC handler must provide special support to the guest for this. On
a DR7 write, the #VC handler must cache the value and issue a VMGEXIT
to notify the hypervisor of the write. However, the #VC handler must
not actually set the value of the DR7 register. On a DR7 read, the #VC
handler must return the cached value of the DR7 register to the guest.
VMGEXIT is not invoked for a DR7 register read.
The caching of the DR7 values will make use of the per-CPU data pages
that are allocated along with the GHCB pages. The per-CPU page for a
vCPU is the page that immediately follows the vCPU's GHCB page. Since
each GHCB page is unique for a vCPU, the page that follows becomes
unique for that vCPU. The SEC phase will reserves an area of memory for
a single GHCB and per-CPU page for use by the BSP. After transitioning
to the PEI phase, new GHCB and per-CPU pages are allocated for the BSP
and all APs.
Under SEV-ES, a NPF intercept for an NPT entry with a reserved bit set
generates a #VC exception. This condition is assumed to be an MMIO access.
VMGEXIT must be used to allow the hypervisor to handle this intercept.
Add support to construct the required GHCB values to support a NPF NAE
event for MMIO. Parse the instruction that generated the #VC exception,
setting the required register values in the GHCB and creating the proper
SW_EXIT_INFO1, SW_EXITINFO2 and SW_SCRATCH values in the GHCB.
Under SEV-ES, a MSR_PROT intercept generates a #VC exception. VMGEXIT must
be used to allow the hypervisor to handle this intercept.
Add support to construct the required GHCB values to support an MSR_PROT
NAE event. Parse the instruction that generated the #VC exception to
determine whether it is RDMSR or WRMSR, setting the required register
register values in the GHCB and creating the proper SW_EXIT_INFO1 value in
the GHCB.
Under SEV-ES, a CPUID intercept generates a #VC exception. VMGEXIT must be
used to allow the hypervisor to handle this intercept.
Add support to construct the required GHCB values to support a CPUID NAE
event. Additionally, CPUID 0x0000_000d (CPUID_EXTENDED_STATE) requires
XCR0 to be supplied in the GHCB, so add support to issue the XGETBV
instruction.
Add support to the #VC exception handler to handle string IO. This
requires expanding the IO instruction parsing to recognize string based
IO instructions as well as preparing an un-encrypted buffer to be used
to transfer (either to or from the guest) the string contents for the IO
operation. The SW_EXITINFO2 and SW_SCRATCH fields of the GHCB are set
appropriately for the operation. Multiple VMGEXIT invocations may be
needed to complete the string IO operation.
Under SEV-ES, a IOIO_PROT intercept generates a #VC exception. VMGEXIT
must be used to allow the hypervisor to handle this intercept.
Add support to construct the required GHCB values to support a IOIO_PROT
NAE event. Parse the instruction that generated the #VC exception,
setting the required register values in the GHCB and creating the proper
SW_EXITINFO1 value in the GHCB.
Tom Lendacky [Wed, 12 Aug 2020 20:21:36 +0000 (15:21 -0500)]
OvmfPkg/VmgExitLib: Implement library support for VmgExitLib in OVMF
The base VmgExitLib library provides a default limited interface. As it
does not provide full support, create an OVMF version of this library to
begin the process of providing full support of SEV-ES within OVMF.
SEV-ES support is only provided for X64 builds, so only OvmfPkgX64.dsc is
updated to make use of the OvmfPkg version of the library.
Add base support to handle #VC exceptions. Update the common exception
handlers to invoke the VmgExitHandleVc () function of the VmgExitLib
library when a #VC is encountered. A non-zero return code will propagate
to the targeted exception handler.
Under SEV-ES, a DR7 read or write intercept generates a #VC exception.
To avoid exception recursion, a #VC exception will not try to read and
push the actual debug registers into the EFI_SYSTEM_CONTEXT_X64 struct
and instead push zeroes. The #VC exception handler does not make use of
the debug registers from the saved context and the exception processing
exit code does not attempt to restore the debug register values.
Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Various CpuExceptionHandlerLib libraries will updated to use the new
VmgExitLib library. To prevent any build breakage, update the
UefiPayloadPkg DSC files that use a form of the CpuExceptionHandlerLib
library to include the VmgExitLib library.
Cc: Maurice Ma <maurice.ma@intel.com> Cc: Guo Dong <guo.dong@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Reviewed-by: Guo Dong <guo.dong@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Various CpuExceptionHandlerLib libraries will updated to use the new
VmgExitLib library. To prevent any build breakage, update the OvmfPkg
DSC files that use a form of the CpuExceptionHandlerLib library to
include the VmgExitLib library.
To support handling #VC exceptions and issuing VMGEXIT instructions,
create a library with functions that can be used to perform these
#VC/VMGEXIT related operations. This includes functions for:
- Handling #VC exceptions
- Preparing for and issuing a VMGEXIT
- Performing MMIO-related write operations to support flash emulation
- Performing AP related boot opeations
The base functions in this driver will not do anything and will return
an error if a return value is required. It is expected that other packages
(like OvmfPkg) will create a version of the library to fully support an
SEV-ES guest.
Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
VMGEXIT is a new instruction used for Hypervisor/Guest communication when
running as an SEV-ES guest. A VMGEXIT will cause an automatic exit (AE)
to occur, resulting in a #VMEXIT with an exit code value of 0x403.
Since SEV-ES is only supported in X64, provide the necessary X64 support
to execute the VMGEXIT instruction, which is coded as "rep vmmcall". For
IA32, since "vmmcall" is not supported in NASM 32-bit mode and VMGEXIT
should never be called, provide a stub implementation that is identical
to CpuBreakpoint().
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Under SEV-ES, a CPUID instruction requires the current value of the XCR0
register. In order to retrieve that value, the XGETBV instruction needs
to be executed.
Provide the necessary support to execute the XGETBV instruction.
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
GHCB pages must be mapped as shared pages, so modify the process of
creating identity mapped pagetable entries so that GHCB entries are
created without the encryption bit set. The GHCB range consists of
two pages per CPU, the first being the GHCB and the second being a
per-CPU variable page. Only the GHCB page is mapped as shared.
Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Dandan Bi <dandan.bi@intel.com> Cc: Liming Gao <liming.gao@intel.com> Acked-by: Hao A Wu <hao.a.wu@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
The GHCB is used by an SEV-ES guest for communicating between the guest
and the hypervisor. Create the GHCB definition as defined by the GHCB
protocol definition.
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
For SEV-ES, the GHCB page address is stored in the GHCB MSR register
(0xc0010130). Define the register and the format used for register
during GHCB protocol negotiation.
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
A new dynamic UefiCpuPkg PCD is needed to support SEV-ES under OVMF:
- PcdSevEsIsEnabled: BOOLEAN value used to indicate if SEV-ES is enabled
Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Two new dynamic MdeModulePkg PCDs are needed to support SEV-ES under OVMF:
- PcdGhcbBase: UINT64 value that is the base address of the GHCB
allocation.
- PcdGhcbSize: UINT64 value that is the size, in bytes, of the
GHCB allocation (size is dependent on the number of
APs).
Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Reviewed-by: Hao A Wu <hao.a.wu@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Cole Robinson [Tue, 11 Aug 2020 17:28:18 +0000 (01:28 +0800)]
BaseTools: Work around array.array.tostring() removal in python 3.9
In python3, array.array.tostring() was a compat alias for tobytes().
tostring() was removed in python 3.9.
Convert this to use tolist() which should be valid for all python
versions.
This fixes this build error on python3.9:
(Python 3.9.0b5 on linux) Traceback (most recent call last):
File "/root/edk2/edk2-edk2-stable202002/BaseTools/BinWrappers/PosixLike/../../Source/Python/Trim/Trim.py", line 593, in Main
GenerateVfrBinSec(CommandOptions.ModuleName, CommandOptions.DebugDir, CommandOptions.OutputFile)
File "/root/edk2/edk2-edk2-stable202002/BaseTools/BinWrappers/PosixLike/../../Source/Python/Trim/Trim.py", line 449, in GenerateVfrBinSec
VfrUniOffsetList = GetVariableOffset(MapFileName, EfiFileName, VfrNameList)
File "/root/edk2/edk2-edk2-stable202002/BaseTools/Source/Python/Common/Misc.py", line 88, in GetVariableOffset
return _parseForGCC(lines, efifilepath, varnames)
File "/root/edk2/edk2-edk2-stable202002/BaseTools/Source/Python/Common/Misc.py", line 151, in _parseForGCC
efisecs = PeImageClass(efifilepath).SectionHeaderList
File "/root/edk2/edk2-edk2-stable202002/BaseTools/Source/Python/Common/Misc.py", line 1638, in __init__
if ByteArray.tostring() != b'PE\0\0':
AttributeError: 'array.array' object has no attribute 'tostring'
Pierre Gondois [Thu, 6 Aug 2020 11:11:20 +0000 (12:11 +0100)]
DynamicTablesPkg: Add SSDT Serial port for DBG2
The SSDT Serial port fixup library provides
interfaces to generate a SSDT Serial port table
based on the serial port information.
Update the DBG2 Generator to use the SSDT serial
port fixup library to build a serial port definition
block for the DBG2 serial port and install the
SSDT table.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Thu, 6 Aug 2020 09:36:17 +0000 (10:36 +0100)]
DynamicTablesPkg: Add SSDT Serial port for SPCR
According to Arm Server Base Boot Requirements,
Platform Design Document version 1.2 revision D,
September 2, 2019, section '4.2.1.8 SPCR'; the
SPCR console device must be included in the DSDT.
The SSDT Serial port fixup library provides
interfaces to generate a SSDT Serial port table
based on the serial port information.
Update the SPCR Generator to use the SSDT serial
port fixup library to build a serial port definition
block corresponding to the SPCR serial port and
install the SSDT table.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Thu, 6 Aug 2020 08:20:18 +0000 (09:20 +0100)]
DynamicTablesPkg: SSDT Serial Port generator
Most platforms have several serial ports. These serial ports
are described to an operating system using definition block
tables.
The SSDT Serial Port Table Generator uses the Configuration
Manager protocol to obtain information for the Serial Ports
on the platform. The serial ports are described using the
CM_ARM_SERIAL_PORT_INFO structure. The EArmObjSerialPortInfo
ID is used to represent a standard serial port.
The SSDT Serial port fixup library provides interfaces to
generate a SSDT Serial port table based on the serial port
information. The SSDT Serial Port Table Generator uses the
SSDT serial port fixup library to build serial port
definition blocks and installs the SSDT tables.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Thu, 6 Aug 2020 07:04:50 +0000 (08:04 +0100)]
DynamicTablesPkg: SSDT Serial Port Fixup library
According to Arm Server Base Boot Requirements,
Platform Design Document version 1.2 revision D,
September 2, 2019, section '4.2.1.8 SPCR'; The
SPCR console device must be included in the DSDT.
Additionally, it is often desirable to describe the
serial ports available on a platform so that they
are available for use by a rich OS.
To facilitate the description of serial ports on a
platform a common SSDT Serial Port Fixup library is
introduced. It provides interfaces to build a SSDT
serial port definition block table based on the
serial port information.
The SSDT Serial Port Fixup library is used by the
SPCR, DBG2 and SSDT Serial Port generator to describe
the serial port information in a definition block.
+------------+ +------------+ +------------+
| SPCR Gen | | DBG2 Gen | | SERIAL Gen |
+------------+ +------------+ +------------+
+----------------------------------+
| SSDT Serial Port Fixup library |
+----------------------------------+
The SSDT Serial Port Fixup library:
- Parses the SSDT Serial Port template using the
AmlLib library to generate an AML tree.
- Updates the _UID, _HID and _CID values.
- Fixes up the Serial port base address, length
and the interrupt number in the _CRS descriptor.
- Fixes up the serial-port name.
- Serialises the AML Tree to a buffer containing
the definition block data.
The definition block data is then installed by the
corresponding table generator.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Sami Mujawar [Wed, 5 Aug 2020 15:36:56 +0000 (16:36 +0100)]
DynamicTablesPkg: Add AsciiFromHex helper function
AsciiFromHex is a function converts a hex number to an
ASCII character. This function is used across multiple
generators, so add it to the TableHelperLib.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 15:19:26 +0000 (16:19 +0100)]
DynamicTablesPkg: Dynamic AML: Add AmlLib library
ACPI Definition blocks are implemented using AML which has
a complex grammar making run-time generation of definition
blocks difficult. Dynamic AML is a feature of Dynamic Tables
framework that provides a solution for dynamic generation of
ACPI Definition block tables.
Since, AML bytecode represents complex AML grammar, an AmlLib
library is introduced to assist parsing and traversing of the
AML bytecode at run-time.
The AmlLib library parses a definition block and represents it
as an AML tree. The AML objects, methods and data are represented
as tree nodes. Since the AML data is represented as tree nodes,
it is possible to traverse the tree, locate a node and modify the
node data. The tree can then be serialized to a buffer (that
represents the definition block). This definition block containing
the fixed-up AML code can then be installed as an ACPI Definition
Block table.
Dynamic AML introduces the following techniques:
* AML Fixup
* AML Codegen
* AML Fixup + Codegen
AML Fixup is a technique that involves compiling an ASL template
file to generate AML bytecode. This template AML bytecode can be
parsed at run-time and a fixup code can update the required fields
in the AML template.
AML Codegen employs generating small segments of AML code.
AmlLib provides a rich set of APIs to operate on AML data for AML
Fixup and Codegen.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 14:43:33 +0000 (15:43 +0100)]
DynamicTablesPkg: AmlLib APIs
AmlLib library implements an AML parser, AML tree interface,
serialiser, code generator and other interfaces to generate
Definition Block tables.
The AmlLib APIs are a collection of interfaces that enable
parsing, iterating, modifying, adding, and serialising AML
data to generate a Definition Block table.
The AmlLib APIs are declared in Include\AmlLib\AmlLib.h
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 15:01:35 +0000 (16:01 +0100)]
DynamicTablesPkg: AML Core interface
AML Core interface APIs are internal APIs of the
AmlLib library. These APIs can be used to:
- Create/Delete/Clone an AML tree/node
- Get/update Fixed and Variable arguments
- Serialize an AML tree.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 13:54:51 +0000 (14:54 +0100)]
DynamicTablesPkg: AML Resource Data Codegen
AML Codegen is a Dynamic AML technique that facilitates
generation of small segments of AML code. The AML code
generated using AML Codegen is represented as nodes in
the AML Tree.
AML Resource Data Codegen implements interfaces required
for generating Resource Data elements that can be attached
to an AML tree.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 13:18:20 +0000 (14:18 +0100)]
DynamicTablesPkg: AML Codegen
AML Codegen is a Dynamic AML technique that facilitates
generation of small segments of AML code. The AML code
generated using AML Codegen is represented as nodes in
the AML Tree.
Some examples where AML Codegen can be used are:
- AML Codegen APIs can be used to generate a simple
AML tree.
- An AML template can be parsed to create an AML
tree. This AML Tree can be searched to locate a
node that needs updating. The AML Codegen APIs
can be used to attach new AML nodes.
- A combination of AML Fixup and AML Codegen can
be used to generate an AML tree.
The AML tree can then be serialised as a Definition
Block table.
Following AML Codegen APIs are implemented:
- AmlCodeGenDefinitionBlock()
- AmlCodeGenScope()
- AmlCodeGenNameString()
- AmlCodeGenNameInteger()
- AmlCodeGenDevice()
These AML Codegen APIs in combination with AML Resource
Data Codegen APIs can be used to generate a simple AML
tree.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 11:35:56 +0000 (12:35 +0100)]
DynamicTablesPkg: AML Field list parser
The AML language allows defining field lists in a Definition
Block. Although Dynamic AML does not provide interfaces to
modify Field Lists; an AML template code may contain Field
lists and the AML parser must be capable of parsing and
representing the Field lists in the AML tree.
The AML parser creates an Object node that represents the
'Field Node'. The AML Field list parser creates an object
node for each field element parsed in the AML byte stream,
and adds them to the variable list of arguments of the
'Field Node'.
Nodes that can have a field list are referred as 'Field
nodes'. They have the AML_HAS_FIELD_LIST attribute set in
the AML encoding.
According to the ACPI 6.3 specification, s20.2.5.2 "Named
Objects Encoding", field elements can be:
- NamedField := NameSeg PkgLength;
- ReservedField := 0x00 PkgLength;
- AccessField := 0x01 AccessType AccessAttrib;
- ConnectField := <0x02 NameString> | <0x02 BufferData>;
- ExtendedAccessField := 0x03 AccessType ExtendedAccessAttrib
AccessLength.
A small set of opcodes describes the field elements. They are
referred as field opcodes. An AML_BYTE_ENCODING table has been
created for field OpCodes.
Field elements:
- don't have a SubOpCode;
- have at most 3 fixed arguments (as opposed to 6 for standard
AML objects);
- don't have a variable list of arguments;
- only the NamedField field element is part of the AML namespace.
ConnectField's BufferData is a buffer node containing a single
resource data element.
NamedField field elements do not have an AML OpCode. NameSeg
starts with a Char type and can thus be differentiated from the
Opcodes for other fields.
A pseudo OpCode has been created to simplify the parser.
Following is a representation of a field node in an AML tree:
(FieldNode)
\
|- [0][1][3] # Fixed Arguments
|- {(FldEl0)->(FldEl1)->...)} # Variable Arguments
Where FldEl[n] is one of NamedField, ReservedField, AccessField,
ConnectField, ExtendedAccessField.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 10:26:01 +0000 (11:26 +0100)]
DynamicTablesPkg: AML Method parser
The AML language allows a Definition Block to implement
methods that an Operating System can invoke at runtime.
Although Dynamic AML does not provide interfaces to
modify AML methods; an AML template code may contain
methods and/or method invocations.
Method definitions have an opcode defined in the AML
encoding and can be easily parsed. However, the language
does not define an opcode for method invocation. Method
invocations are represented as a NameString followed by
the arguments to the method. This poses a significant
challenge for the AML parser as it has to determine if
a NameString appearing in the AML byte stream is a method
invocation and if it is a method invocation, then how
many arguments follow.
This also means the Method definition must occur prior to
the method invocation in the AML byte stream. This is a
hard requirement for the AML parser.
The AML method parser maintains a NameSpaceRefList that
keeps a track of every namespace node and its raw AML
absolute path. The AmlIsMethodInvocation() searches the
NameSpaceRefList to determine if a NameString matches
a Method definition.
A pseudo opcode has been defined in the AML encoding to
represent the Method invocation in the AML tree.
The AML encoding for method invocations in the ACPI
specification 6.3 is:
MethodInvocation := NameString TermArgList
The AmlLib library redefines this as:
MethodInvocation := MethodInvocationOp NameString
ArgumentCount TermArgList
ArgumentCount := ByteData
Where MethodInvocationOp is the pseudo opcode and
ArgumentCount is the number of arguments passed to
the method.
NOTE:
The AmlLib library's definition for a method
invocation only applies to the representation
of method invocation node in the AML tree.
When computing the size of a tree or serialising
it, the additional data is not taken into account
i.e. the MethodInvocationOp and the ArgumentCount
are stripped before serialising.
Method invocation nodes have the AML_METHOD_INVOVATION
attribute set in the AmlLib library's representation of
the AML encoding.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 16:09:09 +0000 (17:09 +0100)]
DynamicTablesPkg: AML resource data parser
Resource data are defined in the ACPI 6.3 specification,
s6.4 "Resource Data Types for ACPI". They can be created
using the ASL ResourceTemplate () statement, cf s19.3.3
"ASL Resource Templates".
Resource data can be of the small or large type and are
defined by their encoding. The resource data is stored
in the Bytelist of a BufferOp node. The Bytelist of a
BufferOp node is represented by an AML Data node in
the AML tree.
The resource data parser, examines the Bytelist (Data
node buffer) to detect the presence of resource data.
If the Bytelist data matches the encoding for resource
data types, the resource data parser fragments the
Bytelist containing the resource data buffer into
resource data elements represented as individual Data
nodes and stores them in the variable arguments list
of the BufferOp object nodes.
Example: ASL code and the corresponding AML tree
representation for the resource data.
ASL Code
--------
Name (_CRS, ResourceTemplate() {
QWordMemory (...)
Interrupt (...)
}
AML Tree
--------
(NameOp)
\
|-[_CRS]-[BufferOp] # Fixed Arguments
|-{NULL} \ # Variable Argument
\ list
|-[BuffSize] # Fixed Arguments
|-{(Rd1)->(Rd2)->(EndTag)} # Variable Argument
list
Where:
Rd1 - QWordMemory resource data element.
Rd2 - Interrupt resource data element.
EndTag - Resource data end tag.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 14:50:24 +0000 (15:50 +0100)]
DynamicTablesPkg: AML resource data helper
Resource data are defined in the ACPI 6.3 specification,
s6.4 "Resource Data Types for ACPI". They can be created
using the ASL ResourceTemplate () statement, cf s19.3.3
"ASL Resource Templates".
Resource data can be of the small or large type and are
defined by their encoding. The resource data is stored
in the Bytelist of a BufferOp node. To simplify
operations on resource data, the resource data parser
examines the Bytelist to detect the presence of resource
data. If the data matches the encoding of resource
data type(s), the parser fragments the resource data
buffer into resource data elements (data nodes) and
stores them in the variable arguments list of the
BufferOp node.
The resource data helper provides functions and macros
to assist operations on resource data elements.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 5 Aug 2020 09:40:22 +0000 (10:40 +0100)]
DynamicTablesPkg: AML Parser
Both ASL and AML are declarative language. The ASL code
is compiled to AML bytecode. The AML bytecode is processed
by the ACPI AML interpreter that runs as part of an OS.
AML has a complex encoding making dynamic generation of
Definition Block tables difficult.
Dynamic AML generation involves techniques like AML Fixup
and AML Codegen, both requiring parsing of AML bytecode.
The AML parser is a module that parses an AML byte stream
and represents it as an AML tree. Representing the AML
bytecode as an AML tree is key to reducing the complexity
and enabling Dynamic AML generation.
In an AML Tree each AML statement (that also corresponds
to an ASL statement) is represented as an 'Object Node'.
Each Object Node has an OpCode and up to 6 Fixed Arguments
followed by a list of Variable Arguments.
A Fixed Argument or Variable Argument can be either an
Object Node or a Data Node.
A 'Data Node' consists of a data buffer.
A 'Root Node' is a special type of Object Node that does
not have an Opcode or Fixed Arguments. It only has a list
of Variable Arguments. The Root Node is at the top of the
AML tree and contains the Definition Block Header.
The AML parser uses the 'AML Encoding' to parse an AML byte
stream and represents it as an AML Tree. Representing in the
form of an AML tree simplifies modification, addition and
removal of the tree nodes. The modified tree can then be
serialised to a buffer representing a Definition Block table.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 14:25:53 +0000 (15:25 +0100)]
DynamicTablesPkg: AML ACPI Namespace interface
AML is a declarative language that is processed by the
ACPI AML interpreter. The ACPI AML interpreter will
compile the set of declarations into the ACPI Namespace
at definition block load time.
The hardware information described in AML is effectively
mapped in the ACPI Namespace. The AML ACPI namespace
interface implement the functionality to search the ACPI
Namespace. Example: The AmlFindNode() can be used to locate
a device node in the ACPI namespace using an ASL path as
the search input.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 13:55:03 +0000 (14:55 +0100)]
DynamicTablesPkg: AML debug logging
The AML debug print functions enable logging
of the operations on the AML tree and the data
output. The debug logging functionality is
enabled for debug builds when the DEBUG_INFO
or DEBUG_VERBOSE mask is enabled in the PCD
gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 12:28:42 +0000 (13:28 +0100)]
DynamicTablesPkg: AML serialise interface
AML Fixup and AML Codegen facilitate dynamic generation
of Definition Block tables. The AML byte stream that is
generated is represented in an AML tree. Once the AML
table generation is completed, the AML tree needs to be
serialised for installing as an ACPI table.
The AML serialise interface implements the functionality
to iterate the nodes in the AML tree, collating the AML
bytecode, computing the checksum and writing the AML byte
stream to a buffer that represents the Definition Block
table.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Co-authored-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Sami Mujawar [Tue, 4 Aug 2020 11:46:02 +0000 (12:46 +0100)]
DynamicTablesPkg: AML stream interface
Dynamic AML involves parsing/packing of AML opcode and
data into AML byte streams. The AML stream interface
provides safe buffer management as well as supports
forward and reverse streams. It provides functions to
create, read, write, clone and compare AML streams.
Co-authored-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 08:08:47 +0000 (09:08 +0100)]
DynamicTablesPkg: AML and ASL string helper
Dynamic AML requires encoding/decoding and conversion of
AML and ASL strings. A collection of helper functions
have been provided for internal use in the AmlLib Library.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Tue, 4 Aug 2020 08:01:18 +0000 (09:01 +0100)]
DynamicTablesPkg: AML utility interfaces
The AML utility interfaces are a collection of helper functions
that assist in computing the checksum, size and to propagate the
node information as a result of addition or update of AML nodes.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Mon, 3 Aug 2020 18:40:54 +0000 (19:40 +0100)]
DynamicTablesPkg: AML tree/node cloning
It is often desirable to clone an AML branch/tree
or an AML node. An example of could be to clone
an AML template before fixup so that the original
AML template remains unmodified. Another example
would be replicating a device branch in the AML
tree and fixing up the device information.
To facilitate such scenarios the AmlLib library
provides functions that can be used to clone an
AML branch/tree or an AML node.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Mon, 3 Aug 2020 15:39:57 +0000 (16:39 +0100)]
DynamicTablesPkg: AML tree iterator
The AML tree iterator provides interfaces to traverse the nodes
in the AML tree. The iterator can traverse the AML tree nodes in
the following order:
- Linear progression: Iterate following the AML byte stream
order (depth first).
- Branch progression: Iterate following the AML byte stream
order (depth first), but stop iterating
at the end of the branch.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Mon, 3 Aug 2020 15:30:06 +0000 (16:30 +0100)]
DynamicTablesPkg: AML tree traversal
The AML tree traversal provides interfaces to traverse the
nodes in the AML tree.
It provides interfaces to traverse the AML tree in the
following order:
- Traverse sibling nodes.
(Node) /-i # Child of fixed argument b
\ /
|- [a][b][c][d] # Fixed Arguments
|- {(e)->(f)->(g)} # Variable Arguments
\
\-h # Child of variable argument e
Traversal Order:
- AmlGetNextSibling() : a, b, c, d, e, f, g, NULL
- AmlGetPreviousSibling(): g, f, e, d, c, b, a, NULL
- Iterate depth-first path (follow AML byte stream).
(Node) /-i # Child of fixed argument b
\ /
|- [a][b][c][d] # Fixed Arguments
|- {(e)->(f)->(g)} # Variable Arguments
\
\-h # Child of variable argument e
Traversal Order:
- AmlGetNextNode(): a, b, i, c, d, e, h, f, g, NULL
- AmlGetPreviousNode() g, f, h, e, d, c, i, b, a, NULL
Note: The branch i and h will be traversed if it has
any children.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Mon, 3 Aug 2020 15:21:57 +0000 (16:21 +0100)]
DynamicTablesPkg: AML tree enumerator
The AML tree enumerator interface allows enumeration of the
nodes in the AML tree. The enumerator interface can be useful
to search, serialise, print etc. the nodes in the AML tree.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 29 Jul 2020 12:25:05 +0000 (13:25 +0100)]
DynamicTablesPkg: AML node definitions
AML has a complex grammar, and this makes runtime modifications
on an AML byte stream difficult. A solution is to parse the AML
bytecode and represent it in a tree data structure, henceforth
called the AML tree.
The AML tree is composite in the sense it has the following node
types:
- A 'Root node' that represents the root of the AML tree.
- An 'Object node' that contains the OP Code (AML Encoding).
- A 'Data node' that contains a data buffer.
The Root node contains the Definition block header (ACPI header)
and a Variable Argument list.
The Object node is composed of an array of Fixed Arguments and
a Variable Argument list.
Fixed arguments can be either Object Nodes or Data nodes. Their
placement (index) in the Fixed Argument array is defined by the
AML encoding of the enclosing Object Node.
Variable arguments can be Object nodes or Data nodes.
Following is a depiction of a typical AML tree:
(/) # Root Node
\
|-{(N1)->...} # Variable Argument list, N1 is
\ # an Object Node
\ /-i # Child of fixed argument b
\ /
|- [a][b][c][d] # Fixed Arguments
|- {(e)->(f)->(g)} # Variable Arguments
\
\-h # Child of variable argument e
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 29 Jul 2020 10:42:50 +0000 (11:42 +0100)]
DynamicTablesPkg: AML grammar definition
ASL is a source language for defining ACPI objects including
writing ACPI control methods. An ASL file is compiled using
an ASL compiler tool to generate ACPI Machine Language (AML).
This AML bytecode is processed by the ACPI AML interpreter
that runs as part of an Operating System (OS).
Both ASL and AML are declarative languages. Although they
are closely related they are different languages.
ASL statements declare objects. Each object has three parts,
two of which can be NULL:
Object := ObjectType FixedList VariableList
The AML grammar defines corresponding encodings that makes
up the AML byte stream.
This patch introduces the AML grammar definitions used by
AmlLib for encoding/decoding AML byte streams.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Wed, 29 Jul 2020 12:11:20 +0000 (13:11 +0100)]
DynamicTablesPkg: AmlLib definitions
Dynamic AML is a solution to generate Definition Block tables
at runtime. Dynamic AML provides the following techniques for
generating AML tables.
- AML Fixup
- AML Codegen
- AML Fixup + Codegen
AML fixup involves patching small sections of a template AML
code at runtime, while AML Codegen provides APIs to generate
small sections of AML code at runtime. A combination of
Fixup and Codegen can also be used.
AML has a complex grammar. To simplify the generation of
AML tables, Dynamic AML introduces AmlLib that provides a
rich set of APIs for parsing, traversing, fixup, codegen
and serialisation of AML byte code.
This patch introduces the definitions used by AmlLib.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Sami Mujawar [Tue, 28 Jul 2020 13:19:18 +0000 (14:19 +0100)]
DynamicTablesPkg: Introduction to Dynamic AML
ACPI Definition block (e.g. DSDT or SSDT) tables are implemented
using ACPI source language (ASL) and compiled to ACPI Machine
language (AML). The AML bytecode runs in the OS ACPI Interpreter.
AML has a complex grammar which makes generation of ACPI Definition
block tables difficult.
Dynamic Tables Framework introduces a new feature 'Dynamic AML' that
aims at simplifying the generation of ACPI Definition block tables.
Dynamic AML provides the following techniques for generating ACPI
Definition blocks.
- AML Fixup
- AML Codegen
- AML Fixup + Codegen
AML Fixup involves patching an AML template code at runtime and then
installing the fixed-up AML code as an ACPI table.
AML Codegen provides APIs to generate small segments of AML code that
can be serialised for installation as an ACPI table.
AML Fixup + Codegen is an approach where parts of an AML template are
fixed-up at runtime as well as the AML Codegen APIs are used to insert
small segments of AML code in the AML template. This AML code is then
serialised for installation as an ACPI table.
To assist Dynamic AML generation an AmlLib library is introduced that
provides a rich set of APIs that can be used to parse, traverse, fixup,
codegen and serialise AML definition blocks.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
The local Private pointer variable in SetTheImage() is initialized
based on the caller provided This pointer argument. The cleanup
label path uses the Private pointer which will not be
initialized if This is NULL.
This change initializes Private to NULL and accounts for Private
potentially being NULL in the cleanup label path.
PartitionInstallChildHandle's parameters Start and End is counted
by the BlockSize, but in the implementation it uses the parent
device's BlockSize to calculate the new Start, End and LastBlock.
It would cause the driver report incorrect block scope and the file
system would fail to be found with right block scope.
So correct it to the right value.
Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Gary Lin <glin@suse.com> Cc: Andrew Fish <afish@apple.com> Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Hao A Wu <hao.a.wu@intel.com> Tested-by: Gary Lin <glin@suse.com>
Revert "MdeModulePkg/PartitionDxe: Skip the MBR that add for CD-ROM"
Follow the spec definition, the ISO 9660 (and UDF) would be
checked before the MBR. So it is not required to skip such
MBR talbe that contian the entire block device.
Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Gary Lin <glin@suse.com> Cc: Andrew Fish <afish@apple.com> Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Hao A Wu <hao.a.wu@intel.com> Tested-by: Gary Lin <glin@suse.com>
Refer to UEFI spec 2.8, Section 13.3.2, a block device should
be scanned as below order:
1. GPT
2. ISO 9660 (El Torito) (UDF should aslo be here)
3. MBR
4. no partition found
Note: UDF is using the same boot method as CD, so put it in
the same priority with ISO 9660.
This would also solve the issue that ISO image with MBR would
be treat as MBR device instead of CD/DVD. That would make the
behavior of the image boot different:
If the CD/DVD's MBR be handled correctly, it would be enumerated
as a bootable device with MBR path and FAT filesystem. Some Linux
Distributions boot from such path (FAT with MBR path for ISO) would
come into the grub console instead of the installation selection.
With this change, the CD/DVD would always be enumerated with CD path.
And it would always boot to the installation selection.
Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Gary Lin <glin@suse.com> Cc: Andrew Fish <afish@apple.com> Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Hao A Wu <hao.a.wu@intel.com> Tested-by: Gary Lin <glin@suse.com>
Ray Ni [Wed, 12 Aug 2020 11:21:22 +0000 (19:21 +0800)]
UefiCpuPkg/MtrrLibUnitTest: Change to use static array for CI test
The unit test app supports running in 3 mode:
1. MtrrLibUnitTest generate-random-numbers
<path to MtrrLib/UnitTest/RandomNumber.c> <random-number count>
It generates random numbers and writes to RandomNumber.c.
2. MtrrLibUnitTest [<iterations>]
It tests MtrrLib APIs using configurations generated from static
numbers generated by mode #1.
This is the default execution mode running in CI environment.
3. MtrrLibUnitTest <iterations> random
It tests MtrrLib APIs using configurations generated from random
numbers.
This is what developers can use to test MtrrLib for regressions.
Signed-off-by: Ray Ni <ray.ni@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ming Shao <ming.shao@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Bret Barkelew <Bret.Barkelew@microsoft.com> Cc: Jiewen Yao <jiewen.yao@intel.com>
Ray Ni [Tue, 19 May 2020 21:13:11 +0000 (05:13 +0800)]
UefiCpuPkg/MtrrLib/UnitTest: Add host based unit test
Add host based unit tests for the MtrrLib services.
The BaseLib services AsmCpuid(), AsmReadMsr64(), and
AsmWriteMsr64() are hooked and provide simple emulation
of the CPUID leafs and MSRs required by the MtrrLib to
run as a host based unit test.
Test cases are developed for each of the API.
For the most important APIs MtrrSetMemoryAttributesInMtrrSettings()
and MtrrSetMemoryAttributeInMtrrSettings(), random inputs are
generated and fed to the APIs to make sure the implementation is
good. The test application accepts an optional parameter which
specifies how many iterations of feeding random inputs to the two
APIs. The overall number of test cases increases when the iteration
increases. Default iteration is 10 when no parameter is specified.
Signed-off-by: Ray Ni <ray.ni@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Ming Shao <ming.shao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ming Shao <ming.shao@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Bret Barkelew <Bret.Barkelew@microsoft.com> Cc: Jiewen Yao <jiewen.yao@intel.com>
While RISC-V hart is trapped into S-Mode, the S-Mode interrupt
CSR (SIE) is disabled by RISC-V hart. However the (SIE) is enabled
again by RestoreTPL, this causes the second S-Mode trap is triggered
by the machine mode (M-Mode)timer interrupt redirection. The SRET
instruction clear Supervisor Previous Privilege (SPP) to zero
(User mode) in the second S-Mode interrupt according to the RISC-V
spec. Above brings hart to the user mode (U-Mode) when execute
SRET in the nested S-Mode interrupt handler because SPP is set to
User Mode in the second interrupt. Afterward, system runs in U-Mode
and any accesses to S-Mode CSR causes the invalid instruction exception.
Signed-off-by: Abner Chang <abner.chang@hpe.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Daniel Schaefer <daniel.schaefer@hpe.com> Cc: Leif Lindholm <leif.lindholm@linaro.org> Signed-off-by: Abner Chang <abner.chang@hpe.com> Acked-by: Liming Gao <liming.gao@intel.com>
UnitTestFrameworkPkg/Readme.md: Update documentation for latest features
* Add additional documentation about running tests locally
* Add a note about XML formatting
* Update readme with BaseLib and UNIT_TESTING_DEBUG
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Signed-off-by: Bret Barkelew <Bret.Barkelew@microsoft.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Sean Brogan <sean.brogan@microsoft.com>
Sami Mujawar [Mon, 27 Jul 2020 11:50:49 +0000 (12:50 +0100)]
DynamicTablesPkg: Update release build flags
If MDEPKG_NDEBUG is defined, then debug and assert related
macros wrapped by it are mapped to NULL implementations.
Therefore, add MDEPKG_NDEBUG flags for release builds of
DynamicTablesPkg.
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Pierre Gondois [Mon, 27 Jul 2020 10:08:23 +0000 (11:08 +0100)]
DynamicTablesPkg: Update ASL build options
The EdkII BaseTools have been updated to facilitate the
generation of C file containing AML data using the AmlToC
script. The build system follows the following sequence
for an ASL file compilation:
- The ASL file is preprocessed using the C preprocessor
- The Trim utility prunes the preprocessed file to removed
unwanted data.
- This file is compiled using an ASL compiler to generate
an AML file.
- The AmlToC python script reads the AML data and generates
a C file with an array containing the AML data.
- This C file containing a unique symbol name for the AML
data array is then compiled with the firmware module.
This removes the dependency on the ACPICA iASL compiler's
"-tc" option which achieved the same effect but was less
portable. Therefore, remove the "-tc" option from the ASL
flags as this option is only been supported by the ACPICA
iASL compiler.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Sami Mujawar [Sat, 27 Jun 2020 21:11:35 +0000 (22:11 +0100)]
DynamicTablesPkg: Add EDK2 Core CI support
The TianoCore EDKII project has introduced a Core CI infrastructure
using TianoCore EDKII Tools PIP modules:
* https://pypi.org/project/edk2-pytool-library/
* https://pypi.org/project/edk2-pytool-extensions/
The edk2\.pytool\Readme.md provides information to configure the
environment and to run local builds.
This patch defines the necessary settings for enabling the Core CI
builds for DynamicTablesPkg.
- Add DynamicTablesPkg.ci.yaml for Core CI
- Update ReadMe.md for details and instructions
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Sami Mujawar [Fri, 26 Jun 2020 17:20:36 +0000 (18:20 +0100)]
DynamicTablesPkg: Fix issues reported by EDKII CI
The TianoCore EDKII project has introduced a Core CI infrastructure
using TianoCore EDKII Tools PIP modules:
* https://pypi.org/project/edk2-pytool-library/
* https://pypi.org/project/edk2-pytool-extensions/
More information on configuring the environment and running the
builds can be found in edk2\.pytool\Readme.md
This patch fixes the issues reported by the CI system mainly around
fixing typo errors and package dec and dsc files. A subsequent patch
enables the CI builds for the DynamicTablesPkg.
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
ShellPkg: smbiosview - Change some type 17 field values format
Change how some SMBIOS TYpe 17 field values are printed:
- TotalWidth, DataWidth, ConfiguredMemoryClockSpeed: Print as
hex values instead of decimal, since there are some special meanings
for certain values (e.g. 0xFFFF)
- VolatileSize, NonVolatileSize, CacheSize, and LogicalSize: Print
as "0x%lx" instead of "0x%x" to prevent truncating output when
printing these QWORD fields.
Cc: Ray Ni <ray.ni@intel.com> Cc: Zhichao Gao <zhichao.gao@intel.com> Cc: Sami Mujawar <Sami.Mujawar@arm.com> Signed-off-by: Samer El-Haj-Mahmoud <samer.el-haj-mahmoud@arm.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
Gao, Zhichao [Mon, 3 Aug 2020 05:48:05 +0000 (13:48 +0800)]
Maintainers.txt: Add reviewer for serial, disk and SMBIOS
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Ray Ni <ray.ni@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Hao A Wu <hao.a.wu@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
Makes some minor improvements to function parameter validation
in FmpDxe, in particular to externally exposed functions such
as those that back EFI_FIRMWARE_MANAGEMENT_PROTOCOL.
Cc: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Guomin Jiang <guomin.jiang@intel.com> Cc: Wei6 Xu <wei6.xu@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Guomin Jiang <guomin.jiang@intel.com> Reviewed-by: Wei6 Xu <wei6.xu@intel.com>
Michael Kubacki [Thu, 6 Aug 2020 19:05:40 +0000 (12:05 -0700)]
FmpDevicePkg/FmpDxe: Better warn of potential ImageTypeId misconfig
A user may fall through to the case they depend on the
PcdFmpDeviceImageTypeIdGuid value to get the ImageTypeId GUID
value. The default PCD value is 0 (NULL) so the code would
further fall back on the gEfiCallerIdGuid value.
This change modifies the print error level for the message that
indicates this occurred to DEBUG_WARN from DEBUG_INFO to better
warn the user that this occurred.
Cc: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Guomin Jiang <guomin.jiang@intel.com> Cc: Wei6 Xu <wei6.xu@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Guomin Jiang <guomin.jiang@intel.com> Reviewed-by: Wei6 Xu <wei6.xu@intel.com>
Michael Kubacki [Thu, 6 Aug 2020 19:05:39 +0000 (12:05 -0700)]
FmpDevicePkg/FmpDependencyCheckLib: Return unsatisfied on handle failure
CheckFmpDependency () will currently return that dependencies are
satisfied if the initial call in the function to locate handles
that have gEfiFirmwareManagementProtocolGuid installed fails.
This change updates the error handling to return FALSE (dependencies
are not satisfied) if this handle search fails.
Cc: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Guomin Jiang <guomin.jiang@intel.com> Cc: Wei6 Xu <wei6.xu@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Guomin Jiang <guomin.jiang@intel.com> Reviewed-by: Wei6 Xu <wei6.xu@intel.com>
The Queue.empty() method is not reliable in the multiple
process runtime environment. This patch uses a new method
to check if all modules are processed and workers need
to be stopped. That is to add a None item at the bottom
of the queue. Worker check if it gets that None item to
know if all the module is processed.
Signed-off-by: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Yuwei Chen <yuwei.chen@intel.com> Cc: Lucy Yan <lucyyan@google.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
Update list of content that is covered by a license other than
the BSD-2-Clause Plus Patent License and break out list of
content that is included as a git submodule from upstream
projects.
* Use alphabetic order of content
* Remove references to IntelFrameworkModulePkg
* Add reference for UnitTestFrameworkPkg use of cmocka
Cc: Andrew Fish <afish@apple.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Leif Lindholm <leif@nuviainc.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com> Acked-by: Laszlo Ersek <lersek@redhat.com>
Cc: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <liming.gao@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Bob Feng <bob.c.feng@intel.com>
projects / mirror_edk2.git / log