Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 628 insertions, 0 deletions

diff --git a/tools/sptool/Makefile b/tools/sptool/Makefile
new file mode 100644
index 0000000..1fa85fb
--- /dev/null
+++ b/tools/sptool/Makefile
@@ -0,0 +1,50 @@
+#
+# Copyright (c) 2018-2020, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+MAKE_HELPERS_DIRECTORY := ../../make_helpers/
+include ${MAKE_HELPERS_DIRECTORY}build_macros.mk
+include ${MAKE_HELPERS_DIRECTORY}build_env.mk
+
+SPTOOL  ?= sptool${BIN_EXT}
+PROJECT := $(notdir ${SPTOOL})
+OBJECTS := sptool.o
+V ?= 0
+
+override CPPFLAGS += -D_GNU_SOURCE -D_XOPEN_SOURCE=700
+HOSTCCFLAGS := -Wall -Werror -pedantic -std=c99
+ifeq (${DEBUG},1)
+  HOSTCCFLAGS += -g -O0 -DDEBUG
+else
+  HOSTCCFLAGS += -O2
+endif
+
+ifeq (${V},0)
+  Q := @
+else
+  Q :=
+endif
+
+INCLUDE_PATHS := -I../../include/tools_share
+
+HOSTCC ?= gcc
+
+.PHONY: all clean distclean
+
+all: ${PROJECT}
+
+${PROJECT}: ${OBJECTS} Makefile
+	@echo "  HOSTLD  $@"
+	${Q}${HOSTCC} ${OBJECTS} -o $@ ${LDLIBS}
+	@${ECHO_BLANK_LINE}
+	@echo "Built $@ successfully"
+	@${ECHO_BLANK_LINE}
+
+%.o: %.c Makefile
+	@echo "  HOSTCC  $<"
+	${Q}${HOSTCC} -c ${CPPFLAGS} ${HOSTCCFLAGS} ${INCLUDE_PATHS} $< -o $@
+
+clean:
+	$(call SHELL_DELETE_ALL, ${PROJECT} ${OBJECTS})
diff --git a/tools/sptool/sp_mk_generator.py b/tools/sptool/sp_mk_generator.py
new file mode 100644
index 0000000..c69e0a7
--- /dev/null
+++ b/tools/sptool/sp_mk_generator.py
@@ -0,0 +1,278 @@
+#!/usr/bin/python3
+# Copyright (c) 2020-2023, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+"""
+This script is invoked by Make system and generates secure partition makefile.
+It expects platform provided secure partition layout file which contains list
+of Secure Partition Images and Partition manifests(PM).
+Layout file can exist outside of TF-A tree and the paths of Image and PM files
+must be relative to it.
+
+This script parses the layout file and generates a make file which updates
+FDT_SOURCES, FIP_ARGS, CRT_ARGS and SPTOOL_ARGS which are used in later build
+steps.
+If the SP entry in the layout file has a "uuid" field the scripts gets the UUID
+from there, otherwise it parses the associated partition manifest and extracts
+the UUID from there.
+
+param1: Generated mk file "sp_gen.mk"
+param2: "SP_LAYOUT_FILE", json file containing platform provided information
+param3: plat out directory
+param4: CoT parameter
+param5: Generated dts file "sp_list_fragment.dts"
+
+Generated "sp_gen.mk" file contains triplet of following information for each
+Secure Partition entry
+    FDT_SOURCES +=  sp1.dts
+    SPTOOL_ARGS += -i sp1.bin:sp1.dtb -o sp1.pkg
+    FIP_ARGS += --blob uuid=XXXXX-XXX...,file=sp1.pkg
+    CRT_ARGS += --sp-pkg1 sp1.pkg
+
+A typical SP_LAYOUT_FILE file will look like
+{
+        "SP1" : {
+                "image": "sp1.bin",
+                "pm": "test/sp1.dts"
+        },
+
+        "SP2" : {
+                "image": "sp2.bin",
+                "pm": "test/sp2.dts",
+                "uuid": "1b1820fe-48f7-4175-8999-d51da00b7c9f"
+        }
+
+        ...
+}
+
+"""
+import json
+import os
+import re
+import sys
+import uuid
+from spactions import SpSetupActions
+
+MAX_SP = 8
+UUID_LEN = 4
+
+# Some helper functions to access args propagated to the action functions in
+# SpSetupActions framework.
+def check_sp_mk_gen(args :dict):
+    if "sp_gen_mk" not in args.keys():
+        raise Exception(f"Path to file sp_gen.mk needs to be in 'args'.")
+
+def check_out_dir(args :dict):
+    if "out_dir" not in args.keys() or not os.path.isdir(args["out_dir"]):
+        raise Exception("Define output folder with \'out_dir\' key.")
+
+def check_sp_layout_dir(args :dict):
+    if "sp_layout_dir" not in args.keys() or not os.path.isdir(args["sp_layout_dir"]):
+        raise Exception("Define output folder with \'sp_layout_dir\' key.")
+
+def write_to_sp_mk_gen(content, args :dict):
+    check_sp_mk_gen(args)
+    with open(args["sp_gen_mk"], "a") as f:
+        f.write(f"{content}\n")
+
+def get_sp_manifest_full_path(sp_node, args :dict):
+    check_sp_layout_dir(args)
+    return os.path.join(args["sp_layout_dir"], get_file_from_layout(sp_node["pm"]))
+
+def get_sp_img_full_path(sp_node, args :dict):
+    check_sp_layout_dir(args)
+    return os.path.join(args["sp_layout_dir"], get_file_from_layout(sp_node["image"]))
+
+def get_sp_pkg(sp, args :dict):
+    check_out_dir(args)
+    return os.path.join(args["out_dir"], f"{sp}.pkg")
+
+def is_line_in_sp_gen(line, args :dict):
+    with open(args["sp_gen_mk"], "r") as f:
+        sppkg_rule = [l for l in f if line in l]
+    return len(sppkg_rule) != 0
+
+def get_file_from_layout(node):
+    ''' Helper to fetch a file path from sp_layout.json. '''
+    if type(node) is dict and "file" in node.keys():
+        return node["file"]
+    return node
+
+def get_offset_from_layout(node):
+    ''' Helper to fetch an offset from sp_layout.json. '''
+    if type(node) is dict and "offset" in node.keys():
+        return int(node["offset"], 0)
+    return None
+
+def get_image_offset(node):
+    ''' Helper to fetch image offset from sp_layout.json '''
+    return get_offset_from_layout(node["image"])
+
+def get_pm_offset(node):
+    ''' Helper to fetch pm offset from sp_layout.json '''
+    return get_offset_from_layout(node["pm"])
+
+def get_uuid(sp_layout, sp, args :dict):
+    ''' Helper to fetch uuid from pm file listed in sp_layout.json'''
+    if "uuid" in sp_layout[sp]:
+        # Extract the UUID from the JSON file if the SP entry has a 'uuid' field
+        uuid_std = uuid.UUID(sp_layout[sp]['uuid'])
+    else:
+        with open(get_sp_manifest_full_path(sp_layout[sp], args), "r") as pm_f:
+            uuid_lines = [l for l in pm_f if 'uuid' in l]
+        assert(len(uuid_lines) == 1)
+        # The uuid field in SP manifest is the little endian representation
+        # mapped to arguments as described in SMCCC section 5.3.
+        # Convert each unsigned integer value to a big endian representation
+        # required by fiptool.
+        uuid_parsed = re.findall("0x([0-9a-f]+)", uuid_lines[0])
+        y = list(map(bytearray.fromhex, uuid_parsed))
+        z = [int.from_bytes(i, byteorder='little', signed=False) for i in y]
+        uuid_std = uuid.UUID(f'{z[0]:08x}{z[1]:08x}{z[2]:08x}{z[3]:08x}')
+    return uuid_std
+
+def get_load_address(sp_layout, sp, args :dict):
+    ''' Helper to fetch load-address from pm file listed in sp_layout.json'''
+    with open(get_sp_manifest_full_path(sp_layout[sp], args), "r") as pm_f:
+        load_address_lines = [l for l in pm_f if 'load-address' in l]
+    assert(len(load_address_lines) == 1)
+    load_address_parsed = re.search("(0x[0-9a-f]+)", load_address_lines[0])
+    return load_address_parsed.group(0)
+
+
+@SpSetupActions.sp_action(global_action=True)
+def check_max_sps(sp_layout, _, args :dict):
+    ''' Check validate the maximum number of SPs is respected. '''
+    if len(sp_layout.keys()) > MAX_SP:
+        raise Exception(f"Too many SPs in SP layout file. Max: {MAX_SP}")
+    return args
+
+@SpSetupActions.sp_action
+def gen_fdt_sources(sp_layout, sp, args :dict):
+    ''' Generate FDT_SOURCES values for a given SP. '''
+    manifest_path = get_sp_manifest_full_path(sp_layout[sp], args)
+    write_to_sp_mk_gen(f"FDT_SOURCES += {manifest_path}", args)
+    return args
+
+@SpSetupActions.sp_action
+def gen_sptool_args(sp_layout, sp, args :dict):
+    ''' Generate Sp Pkgs rules. '''
+    sp_pkg = get_sp_pkg(sp, args)
+    sp_dtb_name = os.path.basename(get_file_from_layout(sp_layout[sp]["pm"]))[:-1] + "b"
+    sp_dtb = os.path.join(args["out_dir"], f"fdts/{sp_dtb_name}")
+    sp_img = get_sp_img_full_path(sp_layout[sp], args)
+
+    # Do not generate rule if already there.
+    if is_line_in_sp_gen(f'{sp_pkg}:', args):
+        return args
+    write_to_sp_mk_gen(f"SP_PKGS += {sp_pkg}\n", args)
+
+    sptool_args = f" -i {sp_img}:{sp_dtb}"
+    pm_offset = get_pm_offset(sp_layout[sp])
+    sptool_args += f" --pm-offset {pm_offset}" if pm_offset is not None else ""
+    image_offset = get_image_offset(sp_layout[sp])
+    sptool_args += f" --img-offset {image_offset}" if image_offset is not None else ""
+    sptool_args += f" -o {sp_pkg}"
+    sppkg_rule = f'''
+{sp_pkg}: {sp_dtb} {sp_img}
+\t$(Q)echo Generating {sp_pkg}
+\t$(Q)$(PYTHON) $(SPTOOL) {sptool_args}
+'''
+    write_to_sp_mk_gen(sppkg_rule, args)
+    return args
+
+@SpSetupActions.sp_action(global_action=True, exec_order=1)
+def check_dualroot(sp_layout, _, args :dict):
+    ''' Validate the amount of SPs from SiP and Platform owners. '''
+    if not args.get("dualroot"):
+        return args
+    args["split"] =  int(MAX_SP / 2)
+    owners = [sp_layout[sp].get("owner") for sp in sp_layout]
+    args["plat_max_count"] = owners.count("Plat")
+    # If it is owned by the platform owner, it is assigned to the SiP.
+    args["sip_max_count"] = len(sp_layout.keys()) - args["plat_max_count"]
+    if  args["sip_max_count"] > args["split"] or args["sip_max_count"] > args["split"]:
+        print(f"WARN: SiP Secure Partitions should not be more than {args['split']}")
+    # Counters for gen_crt_args.
+    args["sip_count"] = 1
+    args["plat_count"] = 1
+    return args
+
+@SpSetupActions.sp_action
+def gen_crt_args(sp_layout, sp, args :dict):
+    ''' Append CRT_ARGS. '''
+    # If "dualroot" is configured, 'sp_pkg_idx' depends on whether the SP is owned
+    # by the "SiP" or the "Plat".
+    if args.get("dualroot"):
+        # If the owner is not specified as "Plat", default to "SiP".
+        if sp_layout[sp].get("owner") == "Plat":
+            if args["plat_count"] > args["plat_max_count"]:
+                raise ValueError("plat_count can't surpass plat_max_count in args.")
+            sp_pkg_idx = args["plat_count"] + args["split"]
+            args["plat_count"] += 1
+        else:
+            if args["sip_count"] > args["sip_max_count"]:
+                raise ValueError("sip_count can't surpass sip_max_count in args.")
+            sp_pkg_idx = args["sip_count"]
+            args["sip_count"] += 1
+    else:
+        sp_pkg_idx = [k for k in sp_layout.keys()].index(sp) + 1
+    write_to_sp_mk_gen(f"CRT_ARGS += --sp-pkg{sp_pkg_idx} {get_sp_pkg(sp, args)}\n", args)
+    return args
+
+@SpSetupActions.sp_action
+def gen_fiptool_args(sp_layout, sp, args :dict):
+    ''' Generate arguments for the FIP Tool. '''
+    uuid_std = get_uuid(sp_layout, sp, args)
+    write_to_sp_mk_gen(f"FIP_ARGS += --blob uuid={str(uuid_std)},file={get_sp_pkg(sp, args)}\n", args)
+    return args
+
+@SpSetupActions.sp_action
+def gen_fconf_fragment(sp_layout, sp, args: dict):
+    ''' Generate the fconf fragment file'''
+    with open(args["fconf_fragment"], "a") as f:
+        uuid = get_uuid(sp_layout, sp, args)
+        owner = "Plat" if sp_layout[sp].get("owner") == "Plat" else "SiP"
+
+        if "physical-load-address" in sp_layout[sp].keys():
+            load_address = sp_layout[sp]["physical-load-address"]
+        else:
+            load_address = get_load_address(sp_layout, sp, args)
+
+        f.write(
+f'''\
+{sp} {{
+    uuid = "{uuid}";
+    load-address = <{load_address}>;
+    owner = "{owner}";
+}};
+
+''')
+    return args
+
+def init_sp_actions(sys):
+    # Initialize arguments for the SP actions framework
+    args = {}
+    args["sp_gen_mk"] = os.path.abspath(sys.argv[1])
+    sp_layout_file = os.path.abspath(sys.argv[2])
+    args["sp_layout_dir"] = os.path.dirname(sp_layout_file)
+    args["out_dir"] = os.path.abspath(sys.argv[3])
+    args["dualroot"] = sys.argv[4] == "dualroot"
+    args["fconf_fragment"] = os.path.abspath(sys.argv[5])
+
+
+    with open(sp_layout_file) as json_file:
+        sp_layout = json.load(json_file)
+    #Clear content of file "sp_gen.mk".
+    with open(args["sp_gen_mk"], "w"):
+        None
+    #Clear content of file "fconf_fragment".
+    with open(args["fconf_fragment"], "w"):
+        None
+
+    return args, sp_layout
+
+if __name__ == "__main__":
+    args, sp_layout = init_sp_actions(sys)
+    SpSetupActions.run_actions(sp_layout, args)
diff --git a/tools/sptool/spactions.py b/tools/sptool/spactions.py
new file mode 100644
index 0000000..ff28ebb
--- /dev/null
+++ b/tools/sptool/spactions.py
@@ -0,0 +1,155 @@
+#!/usr/bin/python3
+# Copyright (c) 2022, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+'''
+This is a python module for defining and executing SP setup actions, targeting
+a system deploying an SPM implementation.
+Each action consists of a function, that processes the SP layout json file and
+other provided arguments.
+At the core of this is the SpSetupActions which provides a means to register
+the functions into a table of actions, and execute them all when invoking
+SpSetupActions.run_actions.
+Registering the function is done by using the decorator '@SpSetupActions.sp_action'
+at function definition.
+
+Functions can be called:
+- once only, or per SP defined in the SP layout file;
+- following an order, from lowest to highest of their execution order.
+More information in the doc comments below.
+'''
+import bisect
+
+DEFAULT_ACTION_ORDER = 100
+
+class _ConfiguredAction:
+    """
+    Wraps action function with its configuration.
+    """
+    def __init__(self, action, exec_order=DEFAULT_ACTION_ORDER, global_action=True, log_calls = False):
+        self.exec_order = exec_order
+        self.__name__ = action.__name__
+        def logged_action(action):
+            def inner_logged_action(sp_layout, sp, args :dict):
+                print(f"Calling {action.__name__} -> {sp}")
+                return action(sp_layout, sp, args)
+            return inner_logged_action
+        self.action = logged_action(action) if log_calls is True else action
+        self.global_action = global_action
+
+    def __lt__(self, other):
+        """
+        To allow for ordered inserts in a list of actions.
+        """
+        return self.exec_order < other.exec_order
+
+    def __call__(self, sp_layout, sp, args :dict):
+        """
+        Calls action function.
+        """
+        return self.action(sp_layout, sp, args)
+
+    def __repr__(self) -> str:
+        """
+        Pretty format to show debug information about the action.
+        """
+        return f"func: {self.__name__}; global:{self.global_action}; exec_order: {self.exec_order}"
+
+class SpSetupActions:
+    actions = []
+
+    def sp_action(in_action = None, global_action = False, log_calls=False, exec_order=DEFAULT_ACTION_ORDER):
+        """
+        Function decorator that registers and configures action.
+
+        :param in_action - function to register
+        :param global_action - make the function global, i.e. make it be
+        only called once.
+        :param log_calls - at every call to action, a useful log will be printed.
+        :param exec_order - action's calling order.
+        """
+        def append_action(action):
+            action = _ConfiguredAction(action, exec_order, global_action, log_calls)
+            bisect.insort(SpSetupActions.actions, action)
+            return action
+        if in_action is not None:
+            return append_action(in_action)
+        return append_action
+
+    def run_actions(sp_layout: dict, args: dict, verbose=False):
+        """
+        Executes all actions in accordance to their registering configuration:
+        - If set as "global" it will be called once.
+        - Actions are called respecting the order established by their "exec_order" field.
+
+        :param sp_layout - dictionary containing the SP layout information.
+        :param args - arguments to be propagated through the call of actions.
+        :param verbose - prints actions information in order of execution.
+        """
+        args["called"] = [] # for debug purposes
+        def append_called(action, sp, args :dict):
+            args["called"].append(f"{action.__name__} -> {sp}")
+            return args
+
+        for action in SpSetupActions.actions:
+            if verbose:
+                print(f"Calling {action}")
+            if action.global_action:
+                scope = "global"
+                args = action(sp_layout, scope, args)
+                args = append_called(action, scope, args)
+            else:
+                # Functions that are not global called for each SP defined in
+                # the SP layout.
+                for sp in sp_layout.keys():
+                    args = action(sp_layout, sp, args)
+                    args = append_called(action, sp, args)
+
+if __name__ == "__main__":
+    # Executing this module will have the following test code/playground executed
+    sp_layout = {
+        "partition1" : {
+            "boot-info": True,
+            "image": {
+                "file": "partition.bin",
+                "offset":"0x2000"
+            },
+            "pm": {
+                "file": "cactus.dts",
+                "offset":"0x1000"
+            },
+            "owner": "SiP"
+        },
+        "partition2" : {
+            "image": "partition.bin",
+            "pm": "cactus-secondary.dts",
+            "owner": "Plat"
+        },
+        "partition3" : {
+            "image": "partition.bin",
+            "pm": "cactus-tertiary.dts",
+            "owner": "Plat"
+        },
+        "partition4" : {
+            "image": "ivy.bin",
+            "pm": "ivy.dts",
+            "owner": "Plat"
+        }
+    }
+
+    #Example of how to use this module
+    @SpSetupActions.sp_action(global_action=True)
+    def my_action1(sp_layout, _, args :dict):
+        print(f"inside function my_action1{sp_layout}\n\n args:{args})")
+        return args # Always return args in action function.
+    @SpSetupActions.sp_action(exec_order=1)
+    def my_action2(sp_layout, sp_name, args :dict):
+        print(f"inside function my_action2; SP: {sp_name} {sp_layout} args:{args}")
+        return args
+
+    # Example arguments to be propagated through the functions.
+    # 'args' can be extended in the action functions.
+    args = dict()
+    args["arg1"] = 0xEEE
+    args["arg2"] = 0xFF
+    SpSetupActions.run_actions(sp_layout, args)
diff --git a/tools/sptool/sptool.py b/tools/sptool/sptool.py
new file mode 100755
index 0000000..ae7df92
--- /dev/null
+++ b/tools/sptool/sptool.py
@@ -0,0 +1,145 @@
+#!/usr/bin/python3
+# Copyright (c) 2022, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+#
+# Copyright 2022 The Hafnium Authors.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
+
+"""
+Script which generates a Secure Partition package.
+https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partition-manager.html#secure-partition-packages
+"""
+
+import argparse
+from collections import namedtuple
+import sys
+from shutil import copyfileobj
+import os
+
+HF_PAGE_SIZE = 0x1000 # bytes
+HEADER_ELEMENT_BYTES = 4 # bytes
+MANIFEST_IMAGE_SPLITTER=':'
+PM_OFFSET_DEFAULT = "0x1000"
+IMG_OFFSET_DEFAULT = "0x4000"
+
+def split_dtb_bin(i : str):
+    return i.split(MANIFEST_IMAGE_SPLITTER)
+
+def align_to_page(n):
+    return HF_PAGE_SIZE * \
+          (round(n / HF_PAGE_SIZE) + \
+           (1 if n % HF_PAGE_SIZE else 0))
+
+def to_bytes(value):
+    return int(value).to_bytes(HEADER_ELEMENT_BYTES, 'little')
+
+class SpPkg:
+    def __init__(self, pm_path : str, img_path : str, pm_offset: int,
+                 img_offset: int):
+        if not os.path.isfile(pm_path) or not os.path.isfile(img_path):
+            raise Exception(f"Parameters should be path.  \
+                              manifest: {pm_path}; img: {img_path}")
+        self.pm_path = pm_path
+        self.img_path = img_path
+        self._SpPkgHeader = namedtuple("SpPkgHeader",
+                             ("magic", "version",
+                              "pm_offset", "pm_size",
+                              "img_offset", "img_size"))
+
+        if pm_offset >= img_offset:
+            raise ValueError("pm_offset must be smaller than img_offset")
+
+        is_hfpage_aligned = lambda val : val % HF_PAGE_SIZE == 0
+        if not is_hfpage_aligned(pm_offset) or not is_hfpage_aligned(img_offset):
+           raise ValueError(f"Offsets provided need to be page aligned: pm-{pm_offset}, img-{img_offset}")
+
+        if img_offset - pm_offset < self.pm_size:
+            raise ValueError(f"pm_offset and img_offset do not fit the specified file:{pm_path})")
+
+        self.pm_offset = pm_offset
+        self.img_offset = img_offset
+
+    def __str__(self):
+        return \
+        f'''--SP package Info--
+        header:{self.header}
+        pm: {self.pm_path}
+        img: {self.img_path}
+        '''
+
+    @property
+    def magic(self):
+        return "SPKG".encode()
+
+    @property
+    def version(self):
+        return 0x2
+
+    @property
+    def pm_size(self):
+        return os.path.getsize(self.pm_path)
+
+    @property
+    def img_size(self):
+        return os.path.getsize(self.img_path)
+
+    @property
+    def header(self):
+        return self._SpPkgHeader(
+                self.magic,
+                self.version,
+                self.pm_offset,
+                self.pm_size,
+                self.img_offset,
+                self.img_size)
+
+    @property
+    def header_size(self):
+        return len(self._SpPkgHeader._fields)
+
+    def generate(self, f_out : str):
+        with open(f_out, "wb+") as output:
+            for h in self.header:
+                to_write = h if type(h) is bytes else to_bytes(h)
+                output.write(to_write)
+            output.seek(self.pm_offset)
+            with open(self.pm_path, "rb") as pm:
+                copyfileobj(pm, output)
+            output.seek(self.img_offset)
+            with open(self.img_path, "rb") as img:
+                copyfileobj(img, output)
+
+def Main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-i", required=True,
+                        help="path to partition's image and manifest separated by a colon.")
+    parser.add_argument("--pm-offset", required=False, default=PM_OFFSET_DEFAULT,
+                        help="set partitition manifest offset.")
+    parser.add_argument("--img-offset", required=False, default=IMG_OFFSET_DEFAULT,
+                        help="set partition image offset.")
+    parser.add_argument("-o", required=True, help="set output file path.")
+    parser.add_argument("-v", required=False, action="store_true",
+                        help="print package information.")
+    args = parser.parse_args()
+
+    if not os.path.exists(os.path.dirname(args.o)):
+        raise Exception("Provide a valid output file path!\n")
+
+    image_path, manifest_path = split_dtb_bin(args.i)
+    pm_offset = int(args.pm_offset, 0)
+    img_offset = int(args.img_offset, 0)
+    pkg = SpPkg(manifest_path, image_path, pm_offset, img_offset)
+    pkg.generate(args.o)
+
+    if args.v is True:
+        print(pkg)
+
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(Main())