tests: update linux boot tests

This change updates the config scripts used by linux boot
tests to make them compatible with change that deprecated
LinuxX86System

JIRA: https://gem5.atlassian.net/browse/GEM5-440

Change-Id: I04beff2915c03a2c3a774351edbba60d7ff26867
Signed-off-by: Ayaz Akram <yazakram@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28427
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/tests/gem5/x86-boot-tests/run_exit.py b/tests/gem5/x86-boot-tests/run_exit.py
index 24edcc5..ecb3a84 100644
--- a/tests/gem5/x86-boot-tests/run_exit.py
+++ b/tests/gem5/x86-boot-tests/run_exit.py
@@ -51,7 +51,7 @@
 
 if args.boot_type == "init":
     # Simply run "exit.sh"
-    system.boot_osflags += ' init=/root/exit.sh'
+    system.workload.command_line += ' init=/root/exit.sh'
 else:
     if args.boot_type != "systemd":
         m5.fatal("Bad option for boot_type. init or systemd.")
diff --git a/tests/gem5/x86-boot-tests/system/system.py b/tests/gem5/x86-boot-tests/system/system.py
index 0b69be9..c55664e 100755
--- a/tests/gem5/x86-boot-tests/system/system.py
+++ b/tests/gem5/x86-boot-tests/system/system.py
@@ -30,11 +30,12 @@
 from caches import *
 import sys
 
-class MySystem(LinuxX86System):
+class MySystem(System):
 
     def __init__(self, kernel, disk, cpu_type, num_cpus):
         super(MySystem, self).__init__()
 
+        self.workload = X86FsLinux()
         self._host_parallel = cpu_type == "kvm"
 
         # Set up the clock domain and the voltage domain
@@ -63,12 +64,12 @@
         self.setDiskImages(disk, disk)
 
         # Change this path to point to the kernel you want to use
-        self.kernel = kernel
+        self.workload.object_file = kernel
         # Options specified on the kernel command line
         boot_options = ['earlyprintk=ttyS0', 'console=ttyS0', 'lpj=7999923',
                          'root=/dev/hda1']
 
-        self.boot_osflags = ' '.join(boot_options)
+        self.workload.command_line = ' '.join(boot_options)
 
         # Create the CPUs for our system.
         self.createCPU(cpu_type, num_cpus)
@@ -235,7 +236,7 @@
         ###############################################
 
         # Add in a Bios information structure.
-        self.smbios_table.structures = [X86SMBiosBiosInformation()]
+        self.workload.smbios_table.structures = [X86SMBiosBiosInformation()]
 
         # Set up the Intel MP table
         base_entries = []
@@ -293,8 +294,8 @@
         assignISAInt(1, 1)
         for i in range(3, 15):
             assignISAInt(i, i)
-        self.intel_mp_table.base_entries = base_entries
-        self.intel_mp_table.ext_entries = ext_entries
+        self.workload.intel_mp_table.base_entries = base_entries
+        self.workload.intel_mp_table.ext_entries = ext_entries
 
         entries = \
            [
@@ -311,7 +312,7 @@
         entries.append(X86E820Entry(addr = 0xFFFF0000, size = '64kB',
                                     range_type=2))
 
-        self.e820_table.entries = entries
+        self.workload.e820_table.entries = entries
 
 class CowDisk(IdeDisk):
     def __init__(self, filename):