Squash commits for public release

utils/compilers/DevTreeCompiler/ABI/Structs.py

@@ -0,0 +1,39 @@
+from construct import *
+
+DEVTREE_HEADER_SIGNATURE = "odtr3"
+
+DEVTREE_HEADER = Struct(
+    "signature" / PaddedString(8, "ascii"),
+    "revision" / Int32ul,
+    "flags" / Int32ul,
+    "entries_count" / Int32ul,
+    "name_list_offset" / Int32ul
+)
+
+DEVTREE_ENTRY_FLAGS_MMIO = (1 << 0)
+DEVTREE_ENTRY_TYPE_IO = 0
+DEVTREE_ENTRY_TYPE_FB = 1
+DEVTREE_ENTRY_TYPE_UART = 2
+DEVTREE_ENTRY_TYPE_RAM = 3
+DEVTREE_ENTRY_TYPE_STORAGE = 4
+DEVTREE_ENTRY_TYPE_BUS_CONTROLLER = 5
+DEVTREE_ENTRY_TYPE_RTC = 6
+
+# Currently flags maps to irq_flags_t in the kernel.
+# Later we might need to enhance irq_flags_from_devtree() to use as translator.
+DEVTREE_IRQ_FLAGS_EDGE_TRIGGER = (1 << 0)
+
+DEVTREE_ENTRY = Struct(
+    "type" / Int32ul,
+    "flags" / Int32ul,
+    "region_base" / Int64ul,
+    "region_size" / Int64ul,
+    "irq_lane" / Int32ul,
+    "irq_flags" / Int32ul,
+    "irq_priority" / Int32ul,
+    "rel_name_offset" / Int32ul,
+    "aux1" / Int64ul,
+    "aux2" / Int64ul,
+    "aux3" / Int64ul,
+    "aux4" / Int64ul,
+)