40 lines
995 B
Python
40 lines
995 B
Python
|
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,
|
||
|
|
)
|