forked from Imagelibrary/seL4
f9eb65c9a5
... from the device UT listed by platform_gen. The kernel itself does not care about this memory, and it is just given as device UT. We also just remove the reserved array entirely from the return of `get_physical_memory` since it only seems to be a footgun, it's only used internally to affect what memory the kernel wants to use. Co-authored-by: Kent McLeod <kent@kry10.com> Signed-off-by: julia <git.ts@trainwit.ch>
69 lines
1.9 KiB
Python
69 lines
1.9 KiB
Python
#
|
|
# Copyright 2023, UNSW
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
|
|
''' Generate a JSON file with memory region info from the device tree '''
|
|
|
|
import argparse
|
|
import json
|
|
from typing import Dict, List
|
|
import hardware
|
|
from hardware.config import Config
|
|
from hardware.fdt import FdtParser
|
|
from hardware.utils.rule import HardwareYaml
|
|
|
|
|
|
def make_json_list_of_regions(regions) -> List:
|
|
return [
|
|
{
|
|
'start': r.base,
|
|
'end': r.base + r.size
|
|
}
|
|
for r in regions if r.size > 0
|
|
]
|
|
|
|
|
|
def create_json_file(dev_mem, phys_mem, output_stream):
|
|
json_obj = {
|
|
'devices': make_json_list_of_regions(dev_mem),
|
|
'memory': make_json_list_of_regions(phys_mem)
|
|
}
|
|
|
|
with output_stream:
|
|
json.dump(json_obj, output_stream)
|
|
|
|
|
|
def get_kernel_devices(tree: FdtParser, hw_yaml: HardwareYaml, kernel_config_dict: Dict[str, str]):
|
|
kernel_devices = tree.get_kernel_devices()
|
|
|
|
groups = []
|
|
for dev in kernel_devices:
|
|
rule = hw_yaml.get_rule(dev)
|
|
new_regions = rule.get_regions(dev)
|
|
for reg in new_regions:
|
|
if reg.macro in kernel_config_dict:
|
|
if kernel_config_dict[reg.macro] != "ON":
|
|
continue
|
|
groups.append(reg)
|
|
|
|
return groups
|
|
|
|
|
|
def run(tree: FdtParser, hw_yaml: HardwareYaml, config: Config,
|
|
kernel_config_dict, args: argparse.Namespace):
|
|
if not args.json_out:
|
|
raise ValueError('you need to provide a json-out to use the JSON output method')
|
|
|
|
phys_mem, _ = hardware.utils.memory.get_physical_memory(tree, config)
|
|
kernel_devs = get_kernel_devices(tree, hw_yaml, kernel_config_dict)
|
|
dev_mem = hardware.utils.memory.get_addrspace_exclude(phys_mem + kernel_devs, config)
|
|
|
|
create_json_file(dev_mem, phys_mem, args.json_out)
|
|
|
|
|
|
def add_args(parser):
|
|
parser.add_argument('--json-out', help='output file for memory represented in JSON',
|
|
type=argparse.FileType('w'))
|