import copy
from optparse import OptionError, OptionParser
import os
+import struct
import sys
-import fdt_util
-
# Bring in the patman libraries
our_path = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(our_path, '../patman'))
-# Bring in either the normal fdt library (which relies on libfdt) or the
-# fallback one (which uses fdtget and is slower). Both provide the same
-# interfface for this file to use.
-try:
- from fdt import Fdt
- import fdt
- have_libfdt = True
-except ImportError:
- have_libfdt = False
- from fdt_fallback import Fdt
- import fdt_fallback as fdt
-
-import struct
+import fdt
+import fdt_util
# When we see these properties we ignore them - i.e. do not create a structure member
PROP_IGNORE_LIST = [
"status",
'phandle',
'u-boot,dm-pre-reloc',
+ 'u-boot,dm-tpl',
+ 'u-boot,dm-spl',
]
# 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_'
str = name.replace('@', '_at_')
str = str.replace('-', '_')
str = str.replace(',', '_')
+ str = str.replace('.', '_')
str = str.replace('/', '__')
return str
def TabTo(num_tabs, str):
if len(str) >= num_tabs * 8:
return str + ' '
- return str + '\t' * (num_tabs - len(str) / 8)
+ return str + '\t' * (num_tabs - len(str) // 8)
class DtbPlatdata:
"""Provide a means to convert device tree binary data to platform data
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):
Once this is done, self.fdt.GetRoot() can be called to obtain the
device tree root node, and progress from there.
"""
- self.fdt = Fdt(self._dtb_fname)
- self.fdt.Scan()
+ self.fdt = fdt.FdtScan(self._dtb_fname)
+
+ def ScanNode(self, root):
+ for node in root.subnodes:
+ if 'compatible' in node.props:
+ status = node.props.get('status')
+ if (not options.include_disabled and not status or
+ status.value != 'disabled'):
+ self._valid_nodes.append(node)
+ phandle_prop = node.props.get('phandle')
+ if phandle_prop:
+ phandle = phandle_prop.GetPhandle()
+ self._phandle_node[phandle] = node
+
+ # recurse to handle any subnodes
+ self.ScanNode(node);
def ScanTree(self):
"""Scan the device tree for useful information
_valid_nodes: A list of nodes we wish to consider include in the
platform data
"""
- node_list = []
self._phandle_node = {}
+ self._valid_nodes = []
+ return self.ScanNode(self.fdt.GetRoot());
+
for node in self.fdt.GetRoot().subnodes:
if 'compatible' in node.props:
status = node.props.get('status')
fields = {}
# Get a list of all the valid properties in this node.
- for name, prop in node.props.iteritems():
+ for name, prop in node.props.items():
if name not in PROP_IGNORE_LIST and name[0] != '#':
fields[name] = copy.deepcopy(prop)
# If we've seen this node_name before, update the existing struct.
if node_name in structs:
struct = structs[node_name]
- for name, prop in fields.iteritems():
+ for name, prop in fields.items():
oldprop = struct.get(name)
if oldprop:
oldprop.Widen(prop)
for node in self._valid_nodes:
node_name = self.GetCompatName(node)
struct = structs[node_name]
- for name, prop in node.props.iteritems():
+ for name, prop in node.props.items():
if name not in PROP_IGNORE_LIST and name[0] != '#':
prop.Widen(struct[name])
upto += 1
return structs
+ def ScanPhandles(self):
+ """Figure out what phandles each node uses
+
+ We need to be careful when outputing nodes that use phandles since
+ they must come after the declaration of the phandles in the C file.
+ Otherwise we get a compiler error since the phandle struct is not yet
+ declared.
+
+ This function adds to each node a list of phandle nodes that the node
+ depends on. This allows us to output things in the right order.
+ """
+ for node in self._valid_nodes:
+ node.phandles = set()
+ for pname, prop in node.props.items():
+ if pname in PROP_IGNORE_LIST or pname[0] == '#':
+ continue
+ if type(prop.value) == list:
+ if self.IsPhandle(prop):
+ # Process the list as pairs of (phandle, id)
+ it = iter(prop.value)
+ for phandle_cell, id_cell in zip(it, it):
+ phandle = fdt_util.fdt32_to_cpu(phandle_cell)
+ id = fdt_util.fdt32_to_cpu(id_cell)
+ target_node = self._phandle_node[phandle]
+ node.phandles.add(target_node)
+
+
def GenerateStructs(self, structs):
"""Generate struct defintions for the platform data
self.Out(';\n')
self.Out('};\n')
+ def OutputNode(self, node):
+ """Output the C code for a node
+
+ Args:
+ node: node to output
+ """
+ struct_name = self.GetCompatName(node)
+ var_name = Conv_name_to_c(node.name)
+ self.Buf('static struct %s%s %s%s = {\n' %
+ (STRUCT_PREFIX, struct_name, VAL_PREFIX, var_name))
+ for pname, prop in node.props.items():
+ if pname in PROP_IGNORE_LIST or pname[0] == '#':
+ continue
+ ptype = TYPE_NAMES[prop.type]
+ member_name = Conv_name_to_c(prop.name)
+ self.Buf('\t%s= ' % TabTo(3, '.' + member_name))
+
+ # Special handling for lists
+ if type(prop.value) == list:
+ self.Buf('{')
+ vals = []
+ # For phandles, output a reference to the platform data
+ # of the target node.
+ if self.IsPhandle(prop):
+ # Process the list as pairs of (phandle, id)
+ it = iter(prop.value)
+ for phandle_cell, id_cell in zip(it, it):
+ phandle = fdt_util.fdt32_to_cpu(phandle_cell)
+ id = fdt_util.fdt32_to_cpu(id_cell)
+ target_node = self._phandle_node[phandle]
+ name = Conv_name_to_c(target_node.name)
+ vals.append('{&%s%s, %d}' % (VAL_PREFIX, name, id))
+ else:
+ for val in prop.value:
+ vals.append(self.GetValue(prop.type, val))
+ self.Buf(', '.join(vals))
+ self.Buf('}')
+ else:
+ self.Buf(self.GetValue(prop.type, prop.value))
+ self.Buf(',\n')
+ self.Buf('};\n')
+
+ # Add a device declaration
+ self.Buf('U_BOOT_DEVICE(%s) = {\n' % var_name)
+ self.Buf('\t.name\t\t= "%s",\n' % struct_name)
+ self.Buf('\t.platdata\t= &%s%s,\n' % (VAL_PREFIX, var_name))
+ self.Buf('\t.platdata_size\t= sizeof(%s%s),\n' %
+ (VAL_PREFIX, var_name))
+ self.Buf('};\n')
+ self.Buf('\n')
+
+ self.Out(''.join(self.GetBuf()))
+
def GenerateTables(self):
"""Generate device defintions for the platform data
self.Out('#include <dm.h>\n')
self.Out('#include <dt-structs.h>\n')
self.Out('\n')
- node_txt_list = []
- for node in self._valid_nodes:
- struct_name = self.GetCompatName(node)
- var_name = Conv_name_to_c(node.name)
- self.Buf('static struct %s%s %s%s = {\n' %
- (STRUCT_PREFIX, struct_name, VAL_PREFIX, var_name))
- for pname, prop in node.props.iteritems():
- if pname in PROP_IGNORE_LIST or pname[0] == '#':
- continue
- ptype = TYPE_NAMES[prop.type]
- member_name = Conv_name_to_c(prop.name)
- self.Buf('\t%s= ' % TabTo(3, '.' + member_name))
-
- # Special handling for lists
- if type(prop.value) == list:
- self.Buf('{')
- vals = []
- # For phandles, output a reference to the platform data
- # of the target node.
- if self.IsPhandle(prop):
- # Process the list as pairs of (phandle, id)
- it = iter(prop.value)
- for phandle_cell, id_cell in zip(it, it):
- phandle = fdt_util.fdt32_to_cpu(phandle_cell)
- id = fdt_util.fdt32_to_cpu(id_cell)
- target_node = self._phandle_node[phandle]
- name = Conv_name_to_c(target_node.name)
- vals.append('{&%s%s, %d}' % (VAL_PREFIX, name, id))
- else:
- for val in prop.value:
- vals.append(self.GetValue(prop.type, val))
- self.Buf(', '.join(vals))
- self.Buf('}')
- else:
- self.Buf(self.GetValue(prop.type, prop.value))
- self.Buf(',\n')
- self.Buf('};\n')
-
- # Add a device declaration
- self.Buf('U_BOOT_DEVICE(%s) = {\n' % var_name)
- self.Buf('\t.name\t\t= "%s",\n' % struct_name)
- self.Buf('\t.platdata\t= &%s%s,\n' % (VAL_PREFIX, var_name))
- self.Buf('\t.platdata_size\t= sizeof(%s%s),\n' %
- (VAL_PREFIX, var_name))
- self.Buf('};\n')
- self.Buf('\n')
-
- # Output phandle target nodes first, since they may be referenced
- # by others
- if 'phandle' in node.props:
- self.Out(''.join(self.GetBuf()))
- else:
- node_txt_list.append(self.GetBuf())
+ nodes_to_output = list(self._valid_nodes)
- # Output all the nodes which are not phandle targets themselves, but
- # may reference them. This avoids the need for forward declarations.
- for node_txt in node_txt_list:
- self.Out(''.join(node_txt))
+ # Keep outputing nodes until there is none left
+ while nodes_to_output:
+ node = nodes_to_output[0]
+ # Output all the node's dependencies first
+ for req_node in node.phandles:
+ if req_node in nodes_to_output:
+ self.OutputNode(req_node)
+ nodes_to_output.remove(req_node)
+ self.OutputNode(node)
+ nodes_to_output.remove(node)
if __name__ != "__main__":
plat.ScanTree()
plat.SetupOutput(options.output)
structs = plat.ScanStructs()
+plat.ScanPhandles()
for cmd in args[0].split(','):
if cmd == 'struct':
projects / u-boot / blobdiff