289 lines
9.4 KiB
Python
Executable File
289 lines
9.4 KiB
Python
Executable File
"""
|
|
This file is part of PyCortexMDebug
|
|
|
|
PyCortexMDebug is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
PyCortexMDebug is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with PyCortexMDebug. If not, see <http://www.gnu.org/licenses/>.
|
|
"""
|
|
|
|
|
|
import lxml.objectify as objectify
|
|
import sys
|
|
from copy import deepcopy
|
|
from collections import OrderedDict
|
|
import os
|
|
import traceback
|
|
|
|
|
|
class SVDNonFatalError(Exception):
|
|
"""Exception class for non-fatal errors
|
|
So far, these have related to quirks in some vendor SVD files which are reasonable to ignore
|
|
"""
|
|
|
|
def __init__(self, m):
|
|
self.m = m
|
|
self.exc_info = sys.exc_info()
|
|
|
|
def __str__(self):
|
|
s = "Non-fatal: {}".format(self.m)
|
|
s += "\n" + str("".join(traceback.format_exc())).strip()
|
|
return s
|
|
|
|
|
|
class SVDFile:
|
|
def __init__(self, fname):
|
|
f = objectify.parse(os.path.expanduser(fname))
|
|
root = f.getroot()
|
|
periph = root.peripherals.getchildren()
|
|
self.peripherals = OrderedDict()
|
|
# XML elements
|
|
for p in periph:
|
|
try:
|
|
self.peripherals[str(p.name)] = SVDPeripheral(p, self)
|
|
except SVDNonFatalError as e:
|
|
print(e)
|
|
|
|
|
|
def add_register(parent, node):
|
|
if hasattr(node, "dim"):
|
|
dim = int(str(node.dim), 0)
|
|
# dimension is not used, number of split indexes should be same
|
|
incr = int(str(node.dimIncrement), 0)
|
|
default_dim_index = ",".join((str(i) for i in range(dim)))
|
|
dim_index = str(getattr(node, "dimIndex", default_dim_index))
|
|
indexes = dim_index.split(",")
|
|
offset = 0
|
|
for i in indexes:
|
|
name = str(node.name) % i
|
|
reg = SVDPeripheralRegister(node, parent)
|
|
reg.name = name
|
|
reg.offset += offset
|
|
parent.registers[name] = reg
|
|
offset += incr
|
|
else:
|
|
try:
|
|
parent.registers[str(node.name)] = SVDPeripheralRegister(node, parent)
|
|
except:
|
|
pass
|
|
|
|
|
|
def add_cluster(parent, node):
|
|
if hasattr(node, "dim"):
|
|
dim = int(str(node.dim), 0)
|
|
# dimension is not used, number of split indexes should be same
|
|
incr = int(str(node.dimIncrement), 0)
|
|
default_dim_index = ",".join((str(i) for i in range(dim)))
|
|
dim_index = str(getattr(node, "dimIndex", default_dim_index))
|
|
indexes = dim_index.split(",")
|
|
offset = 0
|
|
for i in indexes:
|
|
name = str(node.name) % i
|
|
cluster = SVDRegisterCluster(node, parent)
|
|
cluster.name = name
|
|
cluster.address_offset += offset
|
|
cluster.base_address += offset
|
|
parent.clusters[name] = cluster
|
|
offset += incr
|
|
else:
|
|
try:
|
|
parent.clusters[str(node.name)] = SVDRegisterCluster(node, parent)
|
|
except SVDNonFatalError as e:
|
|
print(e)
|
|
|
|
|
|
class SVDRegisterCluster:
|
|
def __init__(self, svd_elem, parent):
|
|
self.parent = parent
|
|
self.address_offset = int(str(svd_elem.addressOffset), 0)
|
|
self.base_address = self.address_offset + parent.base_address
|
|
# This doesn't inherit registers from anything
|
|
children = svd_elem.getchildren()
|
|
self.description = str(svd_elem.description)
|
|
self.name = str(svd_elem.name)
|
|
self.registers = OrderedDict()
|
|
self.clusters = OrderedDict()
|
|
for r in children:
|
|
if r.tag == "register":
|
|
add_register(self, r)
|
|
|
|
def refactor_parent(self, parent):
|
|
self.parent = parent
|
|
self.base_address = parent.base_address + self.address_offset
|
|
try:
|
|
values = self.registers.itervalues()
|
|
except AttributeError:
|
|
values = self.registers.values()
|
|
for r in values:
|
|
r.refactor_parent(self)
|
|
|
|
def __unicode__(self):
|
|
return str(self.name)
|
|
|
|
|
|
class SVDPeripheral:
|
|
def __init__(self, svd_elem, parent):
|
|
self.parent = parent
|
|
if not hasattr(svd_elem, "baseAddress"):
|
|
raise SVDNonFatalError("Periph without base address")
|
|
self.base_address = int(str(svd_elem.baseAddress), 0)
|
|
if "derivedFrom" in svd_elem.attrib:
|
|
derived_from = svd_elem.attrib["derivedFrom"]
|
|
try:
|
|
self.name = str(svd_elem.name)
|
|
except:
|
|
self.name = parent.peripherals[derived_from].name
|
|
try:
|
|
self.description = str(svd_elem.description)
|
|
except:
|
|
self.description = parent.peripherals[derived_from].description
|
|
self.registers = deepcopy(parent.peripherals[derived_from].registers)
|
|
self.clusters = deepcopy(parent.peripherals[derived_from].clusters)
|
|
self.refactor_parent(parent)
|
|
else:
|
|
# This doesn't inherit registers from anything
|
|
registers = svd_elem.registers.getchildren()
|
|
self.description = str(svd_elem.description)
|
|
self.name = str(svd_elem.name)
|
|
self.registers = OrderedDict()
|
|
self.clusters = OrderedDict()
|
|
for r in registers:
|
|
if r.tag == "cluster":
|
|
add_cluster(self, r)
|
|
else:
|
|
add_register(self, r)
|
|
|
|
def refactor_parent(self, parent):
|
|
self.parent = parent
|
|
try:
|
|
values = self.registers.itervalues()
|
|
except AttributeError:
|
|
values = self.registers.values()
|
|
for r in values:
|
|
r.refactor_parent(self)
|
|
try:
|
|
for c in self.clusters.itervalues():
|
|
c.refactor_parent(self)
|
|
except AttributeError:
|
|
for c in self.clusters.values():
|
|
c.refactor_parent(self)
|
|
|
|
def __unicode__(self):
|
|
return str(self.name)
|
|
|
|
|
|
class SVDPeripheralRegister:
|
|
def __init__(self, svd_elem, parent):
|
|
self.parent = parent
|
|
self.name = str(svd_elem.name)
|
|
self.description = str(svd_elem.description)
|
|
self.offset = int(str(svd_elem.addressOffset), 0)
|
|
try:
|
|
self.access = str(svd_elem.access)
|
|
except:
|
|
self.access = "read-write"
|
|
try:
|
|
self.size = int(str(svd_elem.size), 0)
|
|
except:
|
|
self.size = 0x20
|
|
self.fields = OrderedDict()
|
|
if hasattr(svd_elem, "fields"):
|
|
fields = svd_elem.fields.getchildren()
|
|
for f in fields:
|
|
self.fields[str(f.name)] = SVDPeripheralRegisterField(f, self)
|
|
|
|
def refactor_parent(self, parent):
|
|
self.parent = parent
|
|
try:
|
|
fields = self.fields.itervalues()
|
|
except AttributeError:
|
|
fields = self.fields.values()
|
|
for f in fields:
|
|
f.refactor_parent(self)
|
|
|
|
def address(self):
|
|
return self.parent.base_address + self.offset
|
|
|
|
def readable(self):
|
|
return self.access in ["read-only", "read-write", "read-writeOnce"]
|
|
|
|
def writable(self):
|
|
return self.access in [
|
|
"write-only",
|
|
"read-write",
|
|
"writeOnce",
|
|
"read-writeOnce",
|
|
]
|
|
|
|
def __unicode__(self):
|
|
return str(self.name)
|
|
|
|
|
|
class SVDPeripheralRegisterField:
|
|
def __init__(self, svd_elem, parent):
|
|
self.parent = parent
|
|
self.name = str(svd_elem.name)
|
|
self.description = str(getattr(svd_elem, "description", ""))
|
|
|
|
try:
|
|
self.offset = int(str(svd_elem.bitOffset))
|
|
self.width = int(str(svd_elem.bitWidth))
|
|
except:
|
|
try:
|
|
bitrange = list(
|
|
map(int, str(svd_elem.bitRange).strip()[1:-1].split(":"))
|
|
)
|
|
self.offset = bitrange[1]
|
|
self.width = 1 + bitrange[0] - bitrange[1]
|
|
except:
|
|
lsb = int(str(svd_elem.lsb))
|
|
msb = int(str(svd_elem.msb))
|
|
self.offset = lsb
|
|
self.width = 1 + msb - lsb
|
|
self.access = str(getattr(svd_elem, "access", parent.access))
|
|
self.enum = {}
|
|
|
|
if hasattr(svd_elem, "enumeratedValues"):
|
|
for v in svd_elem.enumeratedValues.getchildren():
|
|
if v.tag == "name":
|
|
continue
|
|
# Some Kinetis parts have values with # instead of 0x...
|
|
value = str(v.value).replace("#", "0x")
|
|
self.enum[int(value, 0)] = (str(v.name), str(v.description))
|
|
|
|
def refactor_parent(self, parent):
|
|
self.parent = parent
|
|
|
|
def readable(self):
|
|
return self.access in ["read-only", "read-write", "read-writeOnce"]
|
|
|
|
def writable(self):
|
|
return self.access in [
|
|
"write-only",
|
|
"read-write",
|
|
"writeOnce",
|
|
"read-writeOnce",
|
|
]
|
|
|
|
def __unicode__(self):
|
|
return str(self.name)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
for f in sys.argv[1:]:
|
|
print("Testing file: {}".format(f))
|
|
svd = SVDFile(f)
|
|
print(svd.peripherals)
|
|
key = list(svd.peripherals)[0]
|
|
print("Registers in peripheral '{}':".format(key))
|
|
print(svd.peripherals[key].registers)
|
|
print("Done testing file: {}".format(f))
|