Reorganize the various layer components

Machines: Move baremetal machines to meta-xilinx-standalone

Layers:
- Add new meta-xilinx-standalone-experimental
  This layer may require components that may not yet be available to the
  general public.  It will contain various experiemntal integration work.

- meta-xilinx-standalone
  This layer should be functional and contain the necessary items to build a
  baremetal toolchain that can use libxil (replacement to libgloss) from
  the Xilinx embeddedsw components.  (Note, libxil is NOT built as part of
  this work!)

  The layer also contains the buildable components for the various firmware
  components required to startup various Xilinx FPGAs.

Signed-off-by: Mark Hatle <mark.hatle@kernel.crashing.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/meta-xilinx-standalone-experimental/scripts/microblaze_dtb.py b/meta-xilinx-standalone-experimental/scripts/microblaze_dtb.py
new file mode 100644
index 00000000..1c5ed835
--- /dev/null
+++ b/meta-xilinx-standalone-experimental/scripts/microblaze_dtb.py
@@ -0,0 +1,170 @@
+import argparse
+import libfdt
+import os
+import sys
+
+# Format: FEATURE : (dtb property, condition_operator, condition_value)
+# If dtb property is None, then the item is always on
+#
+# If the condition_operator is None, then enable if it exists for existance
+#
+# If the condition_operator is '!', and condition_value is None then enable if
+#    if is not defined
+#
+# Otherwise 'condition' and value are evaluated by type.
+#
+# If the condition is = then any value of condition_values will set it
+# If the condition is ! then no value of condition_values will set it
+
+microblaze_tune_features = {
+  'microblaze' :      (None,                     None, None),
+  'bigendian':        ('xlnx,endianness',        '!', 1),
+  '64-bit' :          ('xlnx,data-size',         '=', 64),
+  'barrel-shift':     ('xlnx,use-barrel',        '=', 1),
+  'pattern-compare':  ('xlnx,use-pcmp-instr',    '=', 1),
+  'reorder'   :       ('xlnx,use-reorder-instr', '!', 0),
+  'frequency-optimized': ('xlnx,area-optimized', '=', 2),
+  'multiply-low':     ('xlnx,use-hw-mul',        '=', 1),
+  'multiply-high':    ('xlnx,use-hw-mul',        '=', 2),
+  'divide-hard':      ('xlnx,use-div',           '=', 1),
+  'fpu-soft':         ('xlnx,use-fpu',           '!', [1,2]),
+  'fpu-hard':         ('xlnx,use-fpu',           '=', 1),
+  'fpu-hard-extended':('xlnx,use-fpu',           '=', 2),
+}
+
+def processProperties(fdt, node):
+    TUNE_FEATURES = []
+
+    for feature in microblaze_tune_features:
+        (property, cop, cvalue) = microblaze_tune_features[feature]
+
+        if not property:
+            TUNE_FEATURES.append(feature)
+
+            # Special processing to get the version
+            if feature == "microblaze":
+                ver = microblazeVersion(fdt, node)
+                if ver:
+                    TUNE_FEATURES.append(ver)
+            continue
+
+        prop_value = fdt.getprop( node, property, libfdt.QUIET_NOTFOUND)
+
+        if not prop_value or prop_value == -1:
+            if cop == '!':
+                if not cvalue:
+                    TUNE_FEATURES.append(ver)
+                    continue
+            continue
+
+        # If no operator
+        if not cop or (cop == '=' and not cvalue):
+            TUNE_FEATURES.append(feature)
+            continue
+
+        ctype = type(cvalue)
+        if ctype == type(list()):
+            val_list = cvalue
+        else:
+            val_list = [ cvalue ]
+
+        result = False
+        for value in val_list:
+            ctype = type(value)
+            if ctype == type(int()):
+                val = prop_value.as_uint32()
+            else:
+                raise TypeError('Unknown type %s' % ctype)
+
+            if value == val:
+                result = True
+                break
+            else:
+                result = False
+
+        if (cop == '!' and result == False) or \
+           (cop == '=' and result == True):
+            TUNE_FEATURES.append(feature)
+
+    return TUNE_FEATURES
+
+def microblazeVersion(fdt, node):
+    version = None
+
+    val = fdt.getprop( node, 'model', libfdt.QUIET_NOTFOUND)
+
+    if val and val != -1:
+        val = fdt.getprop( node, 'model' ).as_str()
+        version = val[val.find('microblaze,') + 11:]
+
+        if version.startswith('8'):
+            # Strip 8.xx.y, to just 8.xx
+            v = version.split('.')
+            version = '.'.join(v[0:2])
+
+        version = 'v' + version
+
+    return version
+
+def MicroblazeConfig(dtbfile, out):
+    fdt = libfdt.Fdt(open(dtbfile, mode='rb').read())
+
+    cpu = -1
+    while (True):
+        cpu = cpu + 1
+        try:
+            node = fdt.path_offset('/cpus/cpu@%d' % cpu)
+
+            try:
+                prop = fdt.getprop( node, 'compatible' )
+
+                prop_val = prop[:-1].decode('utf-8').split('\x00')
+
+                microblaze = False
+                for val in prop_val:
+                    if "microblaze" in val:
+                        microblaze = True
+                        break
+
+                if not microblaze:
+                    continue
+
+                # Construct TUNE_FEATURE here
+                TUNE_FEATURES = processProperties(fdt, node)
+
+                out.write('AVAILTUNES += "microblaze-cpu%s"\n' % (cpu))
+                out.write('TUNE_FEATURES_tune-microblaze-cpu%s = "%s"\n' % (cpu, ' '.join(TUNE_FEATURES)))
+                out.write('PACKAGE_EXTRA_ARCHS_tune-microblaze-cpu%s = "${TUNE_PKGARCH}"\n' % (cpu))
+
+            except Exception as e:
+                sys.stderr.write("Exception looking at properties: %s\n" % e)
+
+                continue
+
+        except Exception as e:
+            # CPUs SHOULD be consecutive w/o gaps, so no more to search
+            break
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Generate MicroBlaze TUNE_FEATURES')
+
+    parser.add_argument('-d', '--dtb-file', action='store',
+        help='DTB file to process')
+
+    parser.add_argument('-o', '--output', action='store',
+        help='Output file to store TUNE_FEATURE settings')
+
+    args = parser.parse_args()
+
+    if not args.dtb_file:
+        sys.stderr.write('ERROR: You must specify a DTB_FILE to process.\n')
+        sys.exit(1)
+
+    outputf = sys.stdout
+    if args.output:
+        if os.path.exists(args.output):
+            sys.stderr.write('ERROR: The output file "%s" exists!\n' % args.output)
+            sys.exit(1)
+        outputf = open(args.output, 'w')
+
+    MicroblazeConfig(args.dtb_file, outputf)