arch-arm, configs: Create single instance of DTB autogeneration

This patch is rewriting the DTB autogeneration functions available in
fs_bigLITTLE.py and fs.py as a single method in the GenericArmSystem
so that other configuration scripts can make use of it.

Change-Id: I492bbf77e6b0ac5c5fbdbc75c0eecba29bd63bda
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/15958
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 1 insertions, 10 deletions

diff --git a/configs/example/fs.py b/configs/example/fs.py
index 4d2165884..05eca87fb 100644
--- a/configs/example/fs.py
+++ b/configs/example/fs.py
@@ -360,19 +360,10 @@ if buildEnv['TARGET_ISA'] == "arm" and not options.bare_metal \
              "with generation functionality.")
 
     # Generate a Device Tree
-    def create_dtb_for_system(system, filename):
-        state = FdtState(addr_cells=2, size_cells=2, cpu_cells=1)
-        rootNode = system.generateDeviceTree(state)
-
-        fdt = Fdt()
-        fdt.add_rootnode(rootNode)
-        dtb_filename = os.path.join(m5.options.outdir, filename)
-        return fdt.writeDtbFile(dtb_filename)
-
     for sysname in ('system', 'testsys', 'drivesys'):
         if hasattr(root, sysname):
             sys = getattr(root, sysname)
-            sys.dtb_filename = create_dtb_for_system(sys, '%s.dtb' % sysname)
+            sys.generateDtb(m5.options.outdir, '%s.dtb' % sysname)
 
 Simulation.setWorkCountOptions(test_sys, options)
 Simulation.run(options, root, test_sys, FutureClass)