dtoc: Move BytesToValue() and GetEmpty() into PropBase
These functions are currently in a separate fdt_util file. Since they are
only used from PropBase and subclasses, it makes sense for them to be in the
PropBase class.
Move these functions into fdt.py along with the list of types.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/dtoc/dtoc.py b/tools/dtoc/dtoc.py
index 10f6a12..518aa51 100755
--- a/tools/dtoc/dtoc.py
+++ b/tools/dtoc/dtoc.py
@@ -16,6 +16,7 @@
our_path = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(our_path, '../patman'))
+import fdt
import fdt_select
import fdt_util
@@ -33,10 +34,10 @@
# C type declarations for the tyues we support
TYPE_NAMES = {
- fdt_util.TYPE_INT: 'fdt32_t',
- fdt_util.TYPE_BYTE: 'unsigned char',
- fdt_util.TYPE_STRING: 'const char *',
- fdt_util.TYPE_BOOL: 'bool',
+ fdt.TYPE_INT: 'fdt32_t',
+ fdt.TYPE_BYTE: 'unsigned char',
+ fdt.TYPE_STRING: 'const char *',
+ fdt.TYPE_BOOL: 'bool',
};
STRUCT_PREFIX = 'dtd_'
@@ -138,13 +139,13 @@
type: Data type (fdt_util)
value: Data value, as a string of bytes
"""
- if type == fdt_util.TYPE_INT:
+ if type == fdt.TYPE_INT:
return '%#x' % fdt_util.fdt32_to_cpu(value)
- elif type == fdt_util.TYPE_BYTE:
+ elif type == fdt.TYPE_BYTE:
return '%#x' % ord(value[0])
- elif type == fdt_util.TYPE_STRING:
+ elif type == fdt.TYPE_STRING:
return '"%s"' % value
- elif type == fdt_util.TYPE_BOOL:
+ elif type == fdt.TYPE_BOOL:
return 'true'
def GetCompatName(self, node):
diff --git a/tools/dtoc/fdt.py b/tools/dtoc/fdt.py
index 413d45d..329d03c 100644
--- a/tools/dtoc/fdt.py
+++ b/tools/dtoc/fdt.py
@@ -17,6 +17,9 @@
# implementation is in the FdtFallback and FdtNormal subclasses. See
# fdt_select.py for how to create an Fdt object.
+# A list of types we support
+(TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL) = range(4)
+
def CheckErr(errnum, msg):
if errnum:
raise ValueError('Error %d: %s: %s' %
@@ -37,6 +40,69 @@
self.name = name
self.value = None
+ def BytesToValue(self, bytes):
+ """Converts a string of bytes into a type and value
+
+ Args:
+ A string containing bytes
+
+ Return:
+ A tuple:
+ Type of data
+ Data, either a single element or a list of elements. Each element
+ is one of:
+ TYPE_STRING: string value from the property
+ TYPE_INT: a byte-swapped integer stored as a 4-byte string
+ TYPE_BYTE: a byte stored as a single-byte string
+ """
+ size = len(bytes)
+ strings = bytes.split('\0')
+ is_string = True
+ count = len(strings) - 1
+ if count > 0 and not strings[-1]:
+ for string in strings[:-1]:
+ if not string:
+ is_string = False
+ break
+ for ch in string:
+ if ch < ' ' or ch > '~':
+ is_string = False
+ break
+ else:
+ is_string = False
+ if is_string:
+ if count == 1:
+ return TYPE_STRING, strings[0]
+ else:
+ return TYPE_STRING, strings[:-1]
+ if size % 4:
+ if size == 1:
+ return TYPE_BYTE, bytes[0]
+ else:
+ return TYPE_BYTE, list(bytes)
+ val = []
+ for i in range(0, size, 4):
+ val.append(bytes[i:i + 4])
+ if size == 4:
+ return TYPE_INT, val[0]
+ else:
+ return TYPE_INT, val
+
+ def GetEmpty(self, type):
+ """Get an empty / zero value of the given type
+
+ Returns:
+ A single value of the given type
+ """
+ if type == TYPE_BYTE:
+ return chr(0)
+ elif type == TYPE_INT:
+ return struct.pack('<I', 0);
+ elif type == TYPE_STRING:
+ return ''
+ else:
+ return True
+
class NodeBase:
"""A device tree node
diff --git a/tools/dtoc/fdt_fallback.py b/tools/dtoc/fdt_fallback.py
index be3b5ba..798c510 100644
--- a/tools/dtoc/fdt_fallback.py
+++ b/tools/dtoc/fdt_fallback.py
@@ -31,11 +31,11 @@
def __init__(self, node, name, byte_list_str):
PropBase.__init__(self, node, 0, name)
if not byte_list_str.strip():
- self.type = fdt_util.TYPE_BOOL
+ self.type = fdt.TYPE_BOOL
return
self.bytes = [chr(int(byte, 16))
for byte in byte_list_str.strip().split(' ')]
- self.type, self.value = fdt_util.BytesToValue(''.join(self.bytes))
+ self.type, self.value = self.BytesToValue(''.join(self.bytes))
def GetPhandle(self):
"""Get a (single) phandle value from a property
diff --git a/tools/dtoc/fdt_normal.py b/tools/dtoc/fdt_normal.py
index ca5335b..c7c86b8 100644
--- a/tools/dtoc/fdt_normal.py
+++ b/tools/dtoc/fdt_normal.py
@@ -33,10 +33,10 @@
PropBase.__init__(self, node, offset, name)
self.bytes = bytes
if not bytes:
- self.type = fdt_util.TYPE_BOOL
+ self.type = fdt.TYPE_BOOL
self.value = True
return
- self.type, self.value = fdt_util.BytesToValue(bytes)
+ self.type, self.value = self.BytesToValue(bytes)
def GetPhandle(self):
"""Get a (single) phandle value from a property
@@ -75,7 +75,7 @@
self.value = [self.value]
if type(self.value) == list and len(newprop.value) > len(self.value):
- val = fdt_util.GetEmpty(self.type)
+ val = self.GetEmpty(self.type)
while len(self.value) < len(newprop.value):
self.value.append(val)
diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py
index 929b524..6b57248 100644
--- a/tools/dtoc/fdt_util.py
+++ b/tools/dtoc/fdt_util.py
@@ -8,72 +8,6 @@
import struct
-# A list of types we support
-(TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL) = range(4)
-
-def BytesToValue(bytes):
- """Converts a string of bytes into a type and value
-
- Args:
- A string containing bytes
-
- Return:
- A tuple:
- Type of data
- Data, either a single element or a list of elements. Each element
- is one of:
- TYPE_STRING: string value from the property
- TYPE_INT: a byte-swapped integer stored as a 4-byte string
- TYPE_BYTE: a byte stored as a single-byte string
- """
- size = len(bytes)
- strings = bytes.split('\0')
- is_string = True
- count = len(strings) - 1
- if count > 0 and not strings[-1]:
- for string in strings[:-1]:
- if not string:
- is_string = False
- break
- for ch in string:
- if ch < ' ' or ch > '~':
- is_string = False
- break
- else:
- is_string = False
- if is_string:
- if count == 1:
- return TYPE_STRING, strings[0]
- else:
- return TYPE_STRING, strings[:-1]
- if size % 4:
- if size == 1:
- return TYPE_BYTE, bytes[0]
- else:
- return TYPE_BYTE, list(bytes)
- val = []
- for i in range(0, size, 4):
- val.append(bytes[i:i + 4])
- if size == 4:
- return TYPE_INT, val[0]
- else:
- return TYPE_INT, val
-
-def GetEmpty(type):
- """Get an empty / zero value of the given type
-
- Returns:
- A single value of the given type
- """
- if type == TYPE_BYTE:
- return chr(0)
- elif type == TYPE_INT:
- return struct.pack('<I', 0);
- elif type == TYPE_STRING:
- return ''
- else:
- return True
-
def fdt32_to_cpu(val):
"""Convert a device tree cell to an integer