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#!/usr/bin/env python3
"""This hacky script generates a partition from a manifest file"""
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
import json
import os
import sys
from os import listdir
if len(sys.argv) != 2:
print("Usage: psa_autogen <manifest_file>")
sys.exit(1)
FILENAME = str(sys.argv[1])
with open(str(FILENAME), "r") as read_file:
data = json.load(read_file)
FILENAME = os.path.basename(FILENAME)
FILENAME = FILENAME.split('.')[0]
print("Base filename is " + str(FILENAME))
if str(data['psa_framework_version'] == "1.0"):
entry_point = str(data['entry_point'])
partition_name = str(data['name'])
services = data['services']
try:
irqs = data['irqs']
except KeyError:
irqs = []
try:
os.mkdir("psa_manifest")
print("Generating psa_manifest directory")
except OSError:
print ("PSA manifest directory already exists")
man = open(str("psa_manifest/" + FILENAME + ".h"), "w")
pids = open("psa_manifest/pid.h", "a")
sids = open("psa_manifest/sid.h", "a")
if len(services) > 28:
print ("Unsupported number of services")
count = 4 # For creating SID array
nsacl = "const int ns_allowed[32] = {"
policy = "const int strict_policy[32] = {"
qcode = "const char * psa_queues[] = { "
versions = "const uint32_t versions[32] = {"
queue_path = "/tmp/psa_service_"
start = False
for x in range(0, count):
qcode = qcode + "\"\", "
nsacl = nsacl + " 0,"
policy = policy + "0,"
versions = versions + " 0,"
# Go through all the services to make sid.h and pid.h
for svc in services:
man.write("#define " + str(svc['signal']) + "_SIGNAL " + str(2 ** (count)) + 'u\n')
sids.write("#define " + str(svc['name']) + "_SID " + str(svc['sid'] + '\n'))
qcode = qcode + "\"" + queue_path + str(int(svc['sid'], 16)) + "\","
ns_clients = svc['non_secure_clients']
print(str(svc))
if ns_clients == "true":
nsacl = nsacl + " 1,"
else:
nsacl = nsacl + " 0,"
try:
versions = versions + str(svc['minor_version']) + ","
except KeyError:
versions = versions + "1,"
strict = 0
try:
if str(svc['minor_policy']).lower() == "strict":
strict = 1
policy = policy + "1,"
else:
policy = policy + "0,"
except KeyError:
strict = 0
policy = policy + "0,"
count = count+1
sigcode = ""
handlercode = "void __sig_handler(int signo) {\n"
irqcount = count
for irq in irqs:
man.write("#define " + str(irq['signal']) + " " + str(2 ** (irqcount)) + 'u\n')
sigcode = sigcode + " signal(" + str(irq['source']) + ", __sig_handler);\n"
handlercode = handlercode + " if (signo == " + str(irq['source']) + ") { raise_signal(" + str(2 ** (irqcount)) + 'u);' + " };\n"
irqcount = irqcount+1
handlercode = handlercode + "}\n"
while (count < 32):
qcode = qcode + "\"\","
nsacl = nsacl + "0,"
versions = versions + "0,"
policy = policy + "0,"
count = count + 1
qcode = qcode + "};\n"
nsacl = nsacl + "};\n"
versions = versions + "};\n"
policy = policy + "};\n"
pids.close()
sids.close()
man.close()
symbols = []
# Go through all the files in the current directory and look for the entrypoint
for root, directories, filenames in os.walk('.'):
for filename in filenames:
if "psa_ff_bootstrap" in filename or filename == "psa_manifest":
continue
try:
fullpath = os.path.join(root,filename)
with open(fullpath, encoding='utf-8') as currentFile:
text = currentFile.read()
if str(entry_point + "(") in text:
symbols.append(fullpath)
except IOError:
print("Couldn't open " + filename)
except UnicodeDecodeError:
pass
print(str("Number of entrypoints detected: " + str(len(symbols))))
if len(symbols) < 1:
print("Couldn't find function " + entry_point)
sys.exit(1)
elif len(symbols) > 1:
print("Duplicate entrypoint symbol detected: " + str(symbols))
sys.exit(2)
else:
bs = open(str("psa_ff_bootstrap_" + str(partition_name) + ".c"), "w")
bs.write("#include <psasim/init.h>\n")
bs.write("#include \"" + symbols[0] + "\"\n")
bs.write("#include <signal.h>\n")
bs.write(qcode)
bs.write("\n")
bs.write(nsacl + "\n")
bs.write(policy + "\n")
bs.write(versions + "\n")
bs.write(handlercode)
bs.write("\n")
bs.write("int main() {\n")
bs.write(sigcode)
bs.write(" __init_psasim(psa_queues, 32, ns_allowed, versions, strict_policy);\n")
bs.write(" " + entry_point + "();\nfor(;;);\n}\n")
bs.close()
print("Success")
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