tests: Add CPU switching tests

This changeset adds a set of tests that stress the CPU switching
code. It adds the following test configurations:

 * tsunami-switcheroo-full -- Alpha system (atomic, timing, O3)
 * realview-switcheroo-atomic -- ARM system (atomic<->atomic)
 * realview-switcheroo-timing -- ARM system (timing<->timing)
 * realview-switcheroo-o3 -- ARM system (O3<->O3)
 * realview-switcheroo-full -- ARM system (atomic, timing, O3)

Reference data is provided for the 10.linux-boot test case. All of the
tests trigger a CPU switch once per millisecond during the boot
process.

The in-order CPU model was not included in any of the tests as it does
not support CPU handover.

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/configs/alpha_generic.py b/tests/configs/alpha_generic.py
index 429f4faba..a4ebba54d 100644
--- a/tests/configs/alpha_generic.py
+++ b/tests/configs/alpha_generic.py
@@ -91,3 +91,10 @@ class LinuxAlphaFSSystemUniprocessor(LinuxAlphaSystemBuilder,
     def __init__(self, **kwargs):
         BaseFSSystemUniprocessor.__init__(self, **kwargs)
         LinuxAlphaSystemBuilder.__init__(self)
+
+class LinuxAlphaFSSwitcheroo(LinuxAlphaSystemBuilder, BaseFSSwitcheroo):
+    """Uniprocessor Alpha system prepared for CPU switching"""
+
+    def __init__(self, **kwargs):
+        BaseFSSwitcheroo.__init__(self, **kwargs)
+        LinuxAlphaSystemBuilder.__init__(self)