139 lines
5.1 KiB
Python
139 lines
5.1 KiB
Python
#
|
|
# Copyright (c) 2018 Bobby Noelte
|
|
#
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
#
|
|
|
|
from extract.globals import *
|
|
from extract.directive import DTDirective
|
|
|
|
from extract.default import default
|
|
from extract.reg import reg
|
|
|
|
##
|
|
# @brief Manage flash directives.
|
|
#
|
|
class DTFlash(DTDirective):
|
|
|
|
def __init__(self):
|
|
# Node of the flash
|
|
self._flash_node = None
|
|
|
|
def _extract_partition(self, node_address, yaml, prop, names, defs, def_label):
|
|
prop_def = {}
|
|
prop_alias = {}
|
|
node = reduced[node_address]
|
|
|
|
partition_name = node['props']['label']
|
|
partition_sectors = node['props']['reg']
|
|
|
|
label_prefix = ["FLASH_AREA", partition_name]
|
|
label = self.get_label_string(label_prefix + ["LABEL",])
|
|
prop_def[label] = '"{}"'.format(partition_name)
|
|
|
|
index = 0
|
|
while index < len(partition_sectors):
|
|
sector_index = int(index/2)
|
|
sector_start_offset = partition_sectors[index]
|
|
sector_size = partition_sectors[index + 1]
|
|
label = self.get_label_string(
|
|
label_prefix + ["OFFSET", str(sector_index)])
|
|
prop_def[label] = "{}".format(sector_start_offset)
|
|
label = self.get_label_string(
|
|
label_prefix + ["SIZE", str(sector_index)])
|
|
prop_def[label] = "{}".format(sector_size)
|
|
index += 2
|
|
# alias sector 0
|
|
label = self.get_label_string(label_prefix + ["OFFSET",])
|
|
prop_alias[label] = self.get_label_string(
|
|
label_prefix + ["OFFSET", '0'])
|
|
label = self.get_label_string(label_prefix + ["SIZE",])
|
|
prop_alias[label] = self.get_label_string(
|
|
label_prefix + ["SIZE", '0'])
|
|
|
|
insert_defs(node_address, defs, prop_def, prop_alias)
|
|
|
|
def _extract_flash(self, node_address, yaml, prop, names, defs, def_label):
|
|
load_defs = {}
|
|
|
|
if node_address == 'dummy-flash':
|
|
# We will add addr/size of 0 for systems with no flash controller
|
|
# This is what they already do in the Kconfig options anyway
|
|
load_defs = {
|
|
'CONFIG_FLASH_BASE_ADDRESS': 0,
|
|
'CONFIG_FLASH_SIZE': 0
|
|
}
|
|
insert_defs(node_address, defs, load_defs, {})
|
|
self._flash_base_address = 0
|
|
return
|
|
|
|
self._flash_node = reduced[node_address]
|
|
|
|
flash_props = ["label", "write-block-size", "erase-block-size"]
|
|
for prop in flash_props:
|
|
if prop in self._flash_node['props']:
|
|
default.extract(node_address, None, prop, None, defs, def_label)
|
|
insert_defs(node_address, defs, load_defs, {})
|
|
|
|
#for address in reduced:
|
|
# if address.startswith(node_address) and 'partition@' in address:
|
|
# self._extract_partition(address, yaml, 'partition', None, defs, def_label)
|
|
|
|
def _extract_code_partition(self, node_address, yaml, prop, names, defs, def_label):
|
|
load_defs = {}
|
|
|
|
if node_address == 'dummy-flash':
|
|
node = None
|
|
else:
|
|
node = reduced[node_address]
|
|
if self._flash_node is None:
|
|
# No flash node scanned before-
|
|
raise Exception(
|
|
"Code partition '{}' {} without flash definition."
|
|
.format(prop, node_address))
|
|
|
|
if node and node is not self._flash_node:
|
|
# only compute the load offset if the code partition
|
|
# is not the same as the flash base address
|
|
load_offset = str(int(node['props']['reg'][0]) \
|
|
- int(self._flash_node['props']['reg'][0]))
|
|
load_defs['CONFIG_FLASH_LOAD_OFFSET'] = load_offset
|
|
load_size = node['props']['reg'][1]
|
|
load_defs['CONFIG_FLASH_LOAD_SIZE'] = load_size
|
|
else:
|
|
load_defs['CONFIG_FLASH_LOAD_OFFSET'] = 0
|
|
load_defs['CONFIG_FLASH_LOAD_SIZE'] = 0
|
|
|
|
insert_defs(node_address, defs, load_defs, {})
|
|
|
|
##
|
|
# @brief Extract flash
|
|
#
|
|
# @param node_address Address of node owning the
|
|
# flash definition.
|
|
# @param yaml YAML definition for the owning node.
|
|
# @param prop compatible property name
|
|
# @param names (unused)
|
|
# @param[out] defs Property definitions for each node address
|
|
# @param def_label Define label string of node owning the
|
|
# compatible definition.
|
|
#
|
|
def extract(self, node_address, yaml, prop, names, defs, def_label):
|
|
|
|
if prop == 'zephyr,flash':
|
|
# indicator for flash
|
|
self._extract_flash(node_address, yaml, prop, names, defs, def_label)
|
|
elif prop == 'zephyr,code-partition':
|
|
# indicator for code_partition
|
|
self._extract_code_partition(node_address, yaml, prop, names, defs, def_label)
|
|
elif prop == 'reg':
|
|
# indicator for partition
|
|
self._extract_partition(node_address, yaml, prop, names, defs, def_label)
|
|
else:
|
|
raise Exception(
|
|
"DTFlash.extract called with unexpected directive ({})."
|
|
.format(prop))
|
|
##
|
|
# @brief Management information for flash.
|
|
flash = DTFlash()
|