Gabe Black has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/45045 )
Change subject: arch-x86: Bare metal workload.
......................................................................
arch-x86: Bare metal workload.
Change-Id: I9ff6f5a9970cc7af2ba639be18f1881748074777
---
M src/arch/x86/X86FsWorkload.py
A src/arch/x86/bare_metal/SConscript
A src/arch/x86/bare_metal/workload.cc
A src/arch/x86/bare_metal/workload.hh
4 files changed, 180 insertions(+), 1 deletion(-)
diff --git a/src/arch/x86/X86FsWorkload.py b/src/arch/x86/X86FsWorkload.py
index 1a4248f..95dc8fa 100644
--- a/src/arch/x86/X86FsWorkload.py
+++ b/src/arch/x86/X86FsWorkload.py
@@ -39,7 +39,12 @@
from m5.objects.SMBios import X86SMBiosSMBiosTable
from m5.objects.IntelMP import X86IntelMPFloatingPointer,
X86IntelMPConfigTable
from m5.objects.ACPI import X86ACPIRSDP
-from m5.objects.Workload import KernelWorkload
+from m5.objects.Workload import KernelWorkload, Workload
+
+class X86BareMetalWorkload(Workload):
+ type = 'X86BareMetalWorkload'
+ cxx_header = 'arch/x86/bare_metal/workload.hh'
+ cxx_class = 'X86ISA::BareMetalWorkload'
class X86FsWorkload(KernelWorkload):
type = 'X86FsWorkload'
diff --git a/src/arch/x86/bare_metal/SConscript
b/src/arch/x86/bare_metal/SConscript
new file mode 100644
index 0000000..817a60d
--- /dev/null
+++ b/src/arch/x86/bare_metal/SConscript
@@ -0,0 +1,46 @@
+# -*- mode:python -*-
+
+# Copyright (c) 2007-2008 The Hewlett-Packard Development Company
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder. You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
+# Copyright (c) 2005-2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Import('*')
+
+if env['TARGET_ISA'] != 'x86':
+ Return()
+
+Source('workload.cc')
diff --git a/src/arch/x86/bare_metal/workload.cc
b/src/arch/x86/bare_metal/workload.cc
new file mode 100644
index 0000000..5e03bdc
--- /dev/null
+++ b/src/arch/x86/bare_metal/workload.cc
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2020 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "arch/x86/bare_metal/workload.hh"
+
+#include "arch/x86/faults.hh"
+#include "cpu/thread_context.hh"
+#include "params/X86BareMetalWorkload.hh"
+#include "sim/system.hh"
+
+namespace X86ISA
+{
+
+BareMetalWorkload::BareMetalWorkload(const Params &p) : Workload(p)
+{}
+
+void
+BareMetalWorkload::initState()
+{
+ Workload::initState();
+
+ for (auto *tc: system->threads) {
+ X86ISA::InitInterrupt(0).invoke(tc);
+
+ if (tc->contextId() == 0) {
+ tc->activate();
+ } else {
+ // This is an application processor (AP). It should be
initialized
+ // to look like only the BIOS POST has run on it and put then
put
+ // it into a halted state.
+ tc->suspend();
+ }
+ }
+}
+
+} // namespace X86ISA
diff --git a/src/arch/x86/bare_metal/workload.hh
b/src/arch/x86/bare_metal/workload.hh
new file mode 100644
index 0000000..d280656
--- /dev/null
+++ b/src/arch/x86/bare_metal/workload.hh
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2021 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ARCH_X86_BARE_METAL_WORKLOAD_HH__
+#define __ARCH_X86_BARE_METAL_WORKLOAD_HH__
+
+#include "base/loader/object_file.hh"
+#include "base/loader/symtab.hh"
+#include "base/types.hh"
+#include "cpu/thread_context.hh"
+#include "params/X86BareMetalWorkload.hh"
+#include "sim/workload.hh"
+
+namespace X86ISA
+{
+
+class BareMetalWorkload : public Workload
+{
+ public:
+ using Params = X86BareMetalWorkloadParams;
+ BareMetalWorkload(const Params &p);
+
+ public:
+ void initState() override;
+
+ Addr getEntry() const override { return 0; }
+ Loader::Arch getArch() const override { return Loader::UnknownArch; }
+ const Loader::SymbolTable &
+ symtab(ThreadContext *tc) override
+ {
+ static Loader::SymbolTable sym_tab;
+ return sym_tab;
+ }
+
+ bool
+ insertSymbol(const Loader::Symbol &symbol) override
+ {
+ return false;
+ }
+};
+
+} // namespace X86ISA
+
+#endif // __ARCH_X86_BARE_METAL_WORKLOAD_HH__
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I9ff6f5a9970cc7af2ba639be18f1881748074777
Gerrit-Change-Number: 45045
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <[email protected]>
Gerrit-MessageType: newchange
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