tests,configs: Update x86 boot tests/examples with Workload

As of this commit:
https://gem5-review.googlesource.com/c/public/gem5-resources/+/62658
there is an x86-ubuntu-18.04-boot workload.

Where appropriate tests and example scripts have been updated to use
this workload.

Change-Id: I7c9dc8e0e53b1d3f4c365f0382b5f5d4224436f7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62663
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

configs/example/gem5_library/x86-ubuntu-run-with-kvm.py

@@ -49,9 +49,9 @@ from gem5.components.processors.simple_switchable_processor import (
 from gem5.components.processors.cpu_types import CPUTypes
 from gem5.isas import ISA
 from gem5.coherence_protocol import CoherenceProtocol
-from gem5.resources.resource import Resource
 from gem5.simulate.simulator import Simulator
 from gem5.simulate.exit_event import ExitEvent
+from gem5.resources.workload import Workload
 
 # This runs a check to ensure the gem5 binary is compiled to X86 and to the
 # MESI Two Level coherence protocol.
@@ -117,15 +117,9 @@ command = (
     + "m5 exit;"
 )
 
-board.set_kernel_disk_workload(
-    # The x86 linux kernel will be automatically downloaded to the if not
-    # already present.
-    kernel=Resource("x86-linux-kernel-5.4.49"),
-    # The x86 ubuntu image will be automatically downloaded to the if not
-    # already present.
-    disk_image=Resource("x86-ubuntu-18.04-img"),
-    readfile_contents=command,
-)
+workload = Workload("x86-ubuntu-18.04-boot")
+workload.set_parameter("readfile_contents", command)
+board.set_workload(workload)
 
 simulator = Simulator(
     board=board,

configs/example/gem5_library/x86-ubuntu-run.py

@@ -45,7 +45,7 @@ scons build/X86/gem5.opt
 """
 
 from gem5.prebuilt.demo.x86_demo_board import X86DemoBoard
-from gem5.resources.resource import Resource
+from gem5.resources.workload import Workload
 from gem5.simulate.simulator import Simulator
 
 
@@ -53,13 +53,10 @@ from gem5.simulate.simulator import Simulator
 # simulation.
 board = X86DemoBoard()
 
-# We then set the workload. Here we use the 5.4.49 Linux kernel with an X86
-# Ubuntu OS. If these cannot be found locally they will be automatically
-# downloaded.
-board.set_kernel_disk_workload(
-    kernel=Resource("x86-linux-kernel-5.4.49"),
-    disk_image=Resource("x86-ubuntu-18.04-img"),
-)
+# We then set the workload. Here we use the "x86-ubuntu-18.04-boot" workload.
+# This boots Ubuntu 18.04 with Linux 5.4.49. If the required resources are not
+# found locally, they will be downloaded.
+board.set_workload(Workload("x86-ubuntu-18.04-boot"))
 
 simulator = Simulator(board=board)
 simulator.run()

tests/gem5/configs/x86_boot_exit_run.py

@@ -33,7 +33,6 @@ import m5
 from gem5.runtime import get_runtime_coherence_protocol
 from gem5.isas import ISA
 from gem5.utils.requires import requires
-from gem5.resources.resource import Resource
 from gem5.coherence_protocol import CoherenceProtocol
 from gem5.components.boards.x86_board import X86Board
 from gem5.components.processors.cpu_types import (
@@ -42,10 +41,15 @@ from gem5.components.processors.cpu_types import (
 )
 from gem5.components.processors.simple_processor import SimpleProcessor
 from gem5.simulate.simulator import Simulator
+from gem5.resources.workload import Workload
 
 import argparse
 import importlib
 
+from python.gem5.components.boards.kernel_disk_workload import (
+    KernelDiskWorkload,
+)
+
 parser = argparse.ArgumentParser(
     description="A script to run the gem5 boot test. This test boots the "
     "linux kernel."
@@ -184,17 +188,12 @@ kernal_args = motherboard.get_default_kernel_args()
 if args.boot_type == "init":
     kernal_args.append("init=/root/exit.sh")
 
-# Set the Full System workload.
-motherboard.set_kernel_disk_workload(
-    kernel=Resource(
-        "x86-linux-kernel-5.4.49", resource_directory=args.resource_directory
-    ),
-    disk_image=Resource(
-        "x86-ubuntu-18.04-img", resource_directory=args.resource_directory
-    ),
-    kernel_args=kernal_args,
+# Set the workload.
+workload = Workload(
+    "x86-ubuntu-18.04-boot", resource_directory=args.resource_directory
 )
-
+workload.set_parameter("kernel_args", kernal_args)
+motherboard.set_workload(workload)
 
 # Begin running of the simulation. This will exit once the Linux system boot
 # is complete.