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+# @file
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+# Script to Build OVMF UEFI firmware
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+#
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+# Copyright (c) Microsoft Corporation.
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+# SPDX-License-Identifier: BSD-2-Clause-Patent
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+##
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+import os
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+import logging
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+import io
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+
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+from edk2toolext.environment import shell_environment
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+from edk2toolext.environment.uefi_build import UefiBuilder
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+from edk2toolext.invocables.edk2_platform_build import BuildSettingsManager
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+from edk2toolext.invocables.edk2_setup import SetupSettingsManager, RequiredSubmodule
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+from edk2toolext.invocables.edk2_update import UpdateSettingsManager
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+from edk2toolext.invocables.edk2_pr_eval import PrEvalSettingsManager
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+from edk2toollib.utility_functions import RunCmd
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+
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+
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+ # ####################################################################################### #
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+ # Common Configuration #
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+ # ####################################################################################### #
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+class CommonPlatform():
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+ ''' Common settings for this platform. Define static data here and use
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+ for the different parts of stuart
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+ '''
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+ PackagesSupported = ("OvmfPkg",)
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+ ArchSupported = ("IA32", "X64")
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+ TargetsSupported = ("DEBUG", "RELEASE", "NOOPT")
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+ Scopes = ('ovmf', 'edk2-build')
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+ WorkspaceRoot = os.path.realpath(os.path.join(
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+ os.path.dirname(os.path.abspath(__file__)), "..", ".."))
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+
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+ @classmethod
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+ def GetDscName(cls, ArchCsv: str) -> str:
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+ ''' return the DSC given the architectures requested.
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+
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+ ArchCsv: csv string containing all architectures to build
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+ '''
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+ dsc = "OvmfPkg"
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+ if "IA32" in ArchCsv.upper().split(","):
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+ dsc += "Ia32"
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+ if "X64" in ArchCsv.upper().split(","):
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+ dsc += "X64"
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+ dsc += ".dsc"
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+ return dsc
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+
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+
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+ # ####################################################################################### #
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+ # Configuration for Update & Setup #
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+ # ####################################################################################### #
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+class SettingsManager(UpdateSettingsManager, SetupSettingsManager, PrEvalSettingsManager):
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+
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+ def GetPackagesSupported(self):
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+ ''' return iterable of edk2 packages supported by this build.
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+ These should be edk2 workspace relative paths '''
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+ return CommonPlatform.PackagesSupported
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+
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+ def GetArchitecturesSupported(self):
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+ ''' return iterable of edk2 architectures supported by this build '''
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+ return CommonPlatform.ArchSupported
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+
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+ def GetTargetsSupported(self):
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+ ''' return iterable of edk2 target tags supported by this build '''
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+ return CommonPlatform.TargetsSupported
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+
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+ def GetRequiredSubmodules(self):
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+ ''' return iterable containing RequiredSubmodule objects.
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+ If no RequiredSubmodules return an empty iterable
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+ '''
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+ rs = []
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+
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+ # intentionally declare this one with recursive false to avoid overhead
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+ rs.append(RequiredSubmodule(
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+ "CryptoPkg/Library/OpensslLib/openssl", False))
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+
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+ # To avoid maintenance of this file for every new submodule
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+ # lets just parse the .gitmodules and add each if not already in list.
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+ # The GetRequiredSubmodules is designed to allow a build to optimize
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+ # the desired submodules but it isn't necessary for this repository.
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+ result = io.StringIO()
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+ ret = RunCmd("git", "config --file .gitmodules --get-regexp path", workingdir=self.GetWorkspaceRoot(), outstream=result)
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+ # Cmd output is expected to look like:
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+ # submodule.CryptoPkg/Library/OpensslLib/openssl.path CryptoPkg/Library/OpensslLib/openssl
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+ # submodule.SoftFloat.path ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3
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+ if ret == 0:
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+ for line in result.getvalue().splitlines():
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+ _, _, path = line.partition(" ")
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+ if path is not None:
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+ if path not in [x.path for x in rs]:
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+ rs.append(RequiredSubmodule(path, True)) # add it with recursive since we don't know
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+ return rs
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+
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+ def SetArchitectures(self, list_of_requested_architectures):
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+ ''' Confirm the requests architecture list is valid and configure SettingsManager
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+ to run only the requested architectures.
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+
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+ Raise Exception if a list_of_requested_architectures is not supported
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+ '''
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+ unsupported = set(list_of_requested_architectures) - set(self.GetArchitecturesSupported())
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+ if(len(unsupported) > 0):
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+ errorString = ( "Unsupported Architecture Requested: " + " ".join(unsupported))
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+ logging.critical( errorString )
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+ raise Exception( errorString )
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+ self.ActualArchitectures = list_of_requested_architectures
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+
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+ def GetWorkspaceRoot(self):
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+ ''' get WorkspacePath '''
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+ return CommonPlatform.WorkspaceRoot
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+
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+ def GetActiveScopes(self):
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+ ''' return tuple containing scopes that should be active for this process '''
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+ return CommonPlatform.Scopes
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+
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+ def FilterPackagesToTest(self, changedFilesList: list, potentialPackagesList: list) -> list:
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+ ''' Filter other cases that this package should be built
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+ based on changed files. This should cover things that can't
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+ be detected as dependencies. '''
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+ build_these_packages = []
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+ possible_packages = potentialPackagesList.copy()
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+ for f in changedFilesList:
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+ # BaseTools files that might change the build
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+ if "BaseTools" in f:
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+ if os.path.splitext(f) not in [".txt", ".md"]:
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+ build_these_packages = possible_packages
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+ break
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+
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+ # if the azure pipeline platform template file changed
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+ if "platform-build-run-steps.yml" in f:
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+ build_these_packages = possible_packages
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+ break
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+
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+ return build_these_packages
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+
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+ def GetPlatformDscAndConfig(self) -> tuple:
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+ ''' If a platform desires to provide its DSC then Policy 4 will evaluate if
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+ any of the changes will be built in the dsc.
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+
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+ The tuple should be (<workspace relative path to dsc file>, <input dictionary of dsc key value pairs>)
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+ '''
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+ dsc = CommonPlatform.GetDscName(",".join(self.ActualArchitectures))
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+ return (f"OvmfPkg/{dsc}", {})
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+
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+
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+ # ####################################################################################### #
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+ # Actual Configuration for Platform Build #
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+ # ####################################################################################### #
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+class PlatformBuilder( UefiBuilder, BuildSettingsManager):
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+ def __init__(self):
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+ UefiBuilder.__init__(self)
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+
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+ def AddCommandLineOptions(self, parserObj):
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+ ''' Add command line options to the argparser '''
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+ parserObj.add_argument('-a', "--arch", dest="build_arch", type=str, default="IA32,X64",
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+ help="Optional - CSV of architecture to build. IA32 will use IA32 for Pei & Dxe. "
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+ "X64 will use X64 for both PEI and DXE. IA32,X64 will use IA32 for PEI and "
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+ "X64 for DXE. default is IA32,X64")
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+
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+ def RetrieveCommandLineOptions(self, args):
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+ ''' Retrieve command line options from the argparser '''
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+
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+ shell_environment.GetBuildVars().SetValue("TARGET_ARCH"," ".join(args.build_arch.upper().split(",")), "From CmdLine")
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+ dsc = CommonPlatform.GetDscName(args.build_arch)
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+ shell_environment.GetBuildVars().SetValue("ACTIVE_PLATFORM", f"OvmfPkg/{dsc}", "From CmdLine")
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+
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+ def GetWorkspaceRoot(self):
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+ ''' get WorkspacePath '''
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+ return CommonPlatform.WorkspaceRoot
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+
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+ def GetPackagesPath(self):
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+ ''' Return a list of workspace relative paths that should be mapped as edk2 PackagesPath '''
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+ return ()
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+
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+ def GetActiveScopes(self):
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+ ''' return tuple containing scopes that should be active for this process '''
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+ return CommonPlatform.Scopes
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+
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+ def GetName(self):
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+ ''' Get the name of the repo, platform, or product being build '''
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+ ''' Used for naming the log file, among others '''
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+ # check the startup nsh flag and if set then rename the log file.
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+ # this helps in CI so we don't overwrite the build log since running
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+ # uses the stuart_build command.
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+ if(shell_environment.GetBuildVars().GetValue("MAKE_STARTUP_NSH", "FALSE") == "TRUE"):
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+ return "OvmfPkg_With_Run"
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+ return "OvmfPkg"
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+
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+ def GetLoggingLevel(self, loggerType):
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+ ''' Get the logging level for a given type
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+ base == lowest logging level supported
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+ con == Screen logging
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+ txt == plain text file logging
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+ md == markdown file logging
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+ '''
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+ return logging.DEBUG
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+
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+ def SetPlatformEnv(self):
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+ logging.debug("PlatformBuilder SetPlatformEnv")
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+ self.env.SetValue("PRODUCT_NAME", "OVMF", "Platform Hardcoded")
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+ self.env.SetValue("MAKE_STARTUP_NSH", "FALSE", "Default to false")
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+ self.env.SetValue("QEMU_HEADLESS", "FALSE", "Default to false")
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+ return 0
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+
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+ def PlatformPreBuild(self):
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+ return 0
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+
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+ def PlatformPostBuild(self):
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+ return 0
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+
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+ def FlashRomImage(self):
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+ VirtualDrive = os.path.join(self.env.GetValue("BUILD_OUTPUT_BASE"), "VirtualDrive")
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+ os.makedirs(VirtualDrive, exist_ok=True)
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+ OutputPath_FV = os.path.join(self.env.GetValue("BUILD_OUTPUT_BASE"), "FV")
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+
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+ #
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+ # QEMU must be on the path
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+ #
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+ cmd = "qemu-system-x86_64"
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+ args = "-debugcon stdio" # write messages to stdio
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+ args += " -global isa-debugcon.iobase=0x402" # debug messages out thru virtual io port
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+ args += " -net none" # turn off network
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+ args += f" -drive file=fat:rw:{VirtualDrive},format=raw,media=disk" # Mount disk with startup.nsh
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+
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+ if (self.env.GetValue("QEMU_HEADLESS").upper() == "TRUE"):
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+ args += " -display none" # no graphics
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+
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+ if (self.env.GetBuildValue("SMM_REQUIRE") == "1"):
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+ args += " -machine q35,smm=on" #,accel=(tcg|kvm)"
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+ #args += " -m ..."
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+ #args += " -smp ..."
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+ args += " -global driver=cfi.pflash01,property=secure,value=on"
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+ args += " -drive if=pflash,format=raw,unit=0,file=" + os.path.join(OutputPath_FV, "OVMF_CODE.fd") + ",readonly=on"
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+ args += " -drive if=pflash,format=raw,unit=1,file=" + os.path.join(OutputPath_FV, "OVMF_VARS.fd")
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+ else:
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+ args += " -pflash " + os.path.join(OutputPath_FV, "OVMF.fd") # path to firmware
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+
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+
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+ if (self.env.GetValue("MAKE_STARTUP_NSH").upper() == "TRUE"):
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+ f = open(os.path.join(VirtualDrive, "startup.nsh"), "w")
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+ f.write("BOOT SUCCESS !!! \n")
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+ ## add commands here
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+ f.write("reset -s\n")
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+ f.close()
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+
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+ ret = RunCmd(cmd, args)
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+
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+ if ret == 0xc0000005:
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+ #for some reason getting a c0000005 on successful return
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+ return 0
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+
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+ return ret
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+
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+
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+
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