Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

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

1 files changed, 232 insertions, 0 deletions

diff --git a/tools/sptool/sp_mk_generator.py b/tools/sptool/sp_mk_generator.py
new file mode 100644
index 0000000..f3af584
--- /dev/null
+++ b/tools/sptool/sp_mk_generator.py
@@ -0,0 +1,232 @@
+#!/usr/bin/python3
+# Copyright (c) 2020-2022, 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
+
+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"])
+
+@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}")
+
+    # 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 {get_sp_img_full_path(sp_layout[sp], args)}:{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}
+\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. '''
+    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}')
+    write_to_sp_mk_gen(f"FIP_ARGS += --blob uuid={str(uuid_std)},file={get_sp_pkg(sp, args)}\n", args)
+    return args
+
+def init_sp_actions(sys):
+    sp_layout_file = os.path.abspath(sys.argv[2])
+    with open(sp_layout_file) as json_file:
+        sp_layout = json.load(json_file)
+    # Initialize arguments for the SP actions framework
+    args = {}
+    args["sp_gen_mk"] = os.path.abspath(sys.argv[1])
+    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"
+    #Clear content of file "sp_gen.mk".
+    with open(args["sp_gen_mk"], "w"):
+        None
+    return args, sp_layout
+
+if __name__ == "__main__":
+    args, sp_layout = init_sp_actions(sys)
+    SpSetupActions.run_actions(sp_layout, args)