From 98782f2f8888399a1f4b88627894fed58d329b77 Mon Sep 17 00:00:00 2001 From: Andy Ross Date: Tue, 25 Jun 2024 16:28:57 -0700 Subject: [PATCH] uuid: Add app-global UUID registry Add a very simple uuid-registry.txt file containing all known UUIDs in the tree, use it to generate a C header (the script validates it in the process) that can then be used for a simplified SOF_DEFINE_REG_UUID() mechanism that avoids the risk and temptation temptation of components incorrectly implementing UUIDs. The intent is that in the longer term, this file can be used by other downstream tooling (manifest and topology generation) to more easily reference known IDs by name in a way that avoids duplication and error. Signed-off-by: Andy Ross --- CMakeLists.txt | 2 + scripts/cmake/uuid-registry.cmake | 26 +++++ scripts/gen-uuid-reg.py | 61 ++++++++++++ src/include/sof/lib/uuid.h | 13 +++ uuid-registry.txt | 158 ++++++++++++++++++++++++++++++ zephyr/CMakeLists.txt | 2 + 6 files changed, 262 insertions(+) create mode 100644 scripts/cmake/uuid-registry.cmake create mode 100755 scripts/gen-uuid-reg.py create mode 100644 uuid-registry.txt diff --git a/CMakeLists.txt b/CMakeLists.txt index 075d1a33c636..a6606b325f7b 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -184,6 +184,8 @@ if (BUILD_COUNTERS) sof_add_build_counter_rule() endif() +include(scripts/cmake/uuid-registry.cmake) + add_subdirectory(src) sof_append_relative_path_definitions(sof) diff --git a/scripts/cmake/uuid-registry.cmake b/scripts/cmake/uuid-registry.cmake new file mode 100644 index 000000000000..723247d5794e --- /dev/null +++ b/scripts/cmake/uuid-registry.cmake @@ -0,0 +1,26 @@ +# +# UUID registry generation +# + +is_zephyr(zephyr_is) +if(zephyr_is) + set(TOPDIR ${sof_top_dir}) + set(UUID_REG_H ${PROJECT_BINARY_DIR}/include/generated/uuid-registry.h) + set(DEP_TARGET zephyr_interface) +else() + set(TOPDIR ${PROJECT_SOURCE_DIR}) + set(UUID_REG_H ${PROJECT_BINARY_DIR}/generated/include/uuid-registry.h) + set(DEP_TARGET sof_public_headers) +endif() + +add_custom_command( + OUTPUT ${UUID_REG_H} + COMMAND + ${PYTHON_EXECUTABLE} ${TOPDIR}/scripts/gen-uuid-reg.py + ${TOPDIR}/uuid-registry.txt + ${UUID_REG_H}) + +add_custom_target(uuid_reg_h DEPENDS ${UUID_REG_H}) + +add_dependencies(${DEP_TARGET} uuid_reg_h) + diff --git a/scripts/gen-uuid-reg.py b/scripts/gen-uuid-reg.py new file mode 100755 index 000000000000..3bdd7258cca9 --- /dev/null +++ b/scripts/gen-uuid-reg.py @@ -0,0 +1,61 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: BSD-3-Clause +import re +import sys + +# Very simple UUID registry validator and C header generator. Parses +# uuid-registry.txt (passed as the first command line argument) and +# writes a C header (named in the second argument) containing +# definitions to be used at build time. Fails via assertion if the +# any element in the registry is invalid. + +header = """/* + * GENERATED CODE. DO NOT EDIT. + * + * Generated UUID records (initializers for struct sof_uuid) + * See scripts/gen-uuid-reg.py + */ +#ifndef _UUID_REGISTRY_H +#define _UUID_REGISTRY_H +""" + +all_syms = set() +all_uuids = set() +out_recs = [] + +def emit_uuid_rec(uu, sym): + recs = uu.split('-') + brec = recs[3] + wrecs = [ "0x" + r for r in recs[0:3] ] + byts = [ "0x" + brec[ 2*i : 2*i+2 ] for i in range(int(len(brec) / 2)) ] + uuidinit = "{ " + ", ".join(wrecs) + ", { " + ", ".join(byts) + " } }" + out_recs.append(f"#define _UUIDREG_{sym} {uuidinit}") + +def main(): + with open(sys.argv[1]) as f: + for line in f.readlines(): + line = re.sub(r'\s*#.*', '', line) # trim comments + line = re.sub(r'^\s*', '', line) # trim leading ws + line = re.sub(r'\s*$', '', line) # trim trailing ws + if line == "": + continue + m = re.match(r'(.*)\s+(.*)', line) + assert m + (uu, sym) = (m.group(1).lower(), m.group(2)) + assert re.match(r'[0-9a-f]{8}(?:-[0-9a-f]{4}){2}-[0-9a-f]{16}', uu) + assert re.match(r'[a-zA-Z_][a-zA-Z0-9_]*', sym) + assert len(sym) < 32 + assert uu not in all_uuids + assert sym not in all_syms + all_uuids.add(uu) + all_syms.add(sym) + emit_uuid_rec(uu, sym) + + with open(sys.argv[2], "w") as f: + f.write(header) + for l in out_recs: + f.write(l + "\n") + f.write("#endif /* _UUID_REGISTRY_H */\n") + +if __name__ == "__main__": + main() diff --git a/src/include/sof/lib/uuid.h b/src/include/sof/lib/uuid.h index 315e89fa8330..2f58d89f537b 100644 --- a/src/include/sof/lib/uuid.h +++ b/src/include/sof/lib/uuid.h @@ -9,6 +9,7 @@ #define __SOF_LIB_UUID_H__ #include +#include #ifdef __ZEPHYR__ #include @@ -123,6 +124,18 @@ struct sof_uuid_entry { _DEF_UUID(entity_name, uuid_name, \ _UUID_INIT(va, vb, vc, vd0, vd1, vd2, vd3, vd4, vd5, vd6, vd7)) +/** \brief Defines UUID sourced from the fixed SOF registry + * + * As for SOF_DEFINE_UUID(), but the ID value is sourced by name from + * the uuid-registry.txt file distributed with the source tree. The + * string name field will be identical with the name passed (which is + * passed as a symbol!), runtime symbol (e.g. the "uuid_name" argument + * to SOF_DEFINE_UUID()) will be the same, postfixed with a "_uuid". + * + * \param name Name of the UUID, must match an entry in uuid-registry.txt + */ +#define SOF_DEFINE_REG_UUID(name) _DEF_UUID(#name, name##_uuid, _UUIDREG_##name) + /** \brief Creates local unique 32-bit representation of UUID structure. * * In Zephyr builds, this has the same address as the result of diff --git a/uuid-registry.txt b/uuid-registry.txt new file mode 100644 index 000000000000..f21859de222d --- /dev/null +++ b/uuid-registry.txt @@ -0,0 +1,158 @@ +# +# Global UUID/name registry for SOF components. All IDs used in +# shipped binary artifacts must appear in this list. All names must +# be unique. All names must be legal C identifiers of at most 31 +# characters. No change to a previously distributed mapping is +# allowed, ever. +# +# Simple format: "#" indicates a comment to end of line. Remaining +# lines must be entirely empty/whitespace, or two whitespace-separated +# fields of: +# +# NOTE: the UUID is in a SOF-unique format to match the (nonstandard +# and endian-ambiguous) representation in struct sof_uuid: the first +# three entries are specied as little endian dword/word values, the +# last as an ordered array of 8 bytes. If you have a value from +# e.g. an RFC-4122 compliant tool, swap the order of the two bytes in +# the fourth cluster and prepend it to the last. Most of the time you +# are just using random values and won't care about the byte swap. +# + +ab01db67-84b0-4d2d-93d30e619680576e acp_bt_dma +f8a7091c-7d2d-4410-9bb555278378d59f acp_clk +70f2d3f2-cbb6-4984-a2d80dd514b80bc2 acpdma +0ae40946-dfd2-4140-91520dd5a3eaae81 acp_dmic_dai +109c7aba-a7ba-43c3-b94259e20a6611be acp_dmic_dma +dc2199ea-cdae-4d23-a413ffe442f785f2 acp_dmic_dma_common +b414df09-9e31-4c59-86577afc8deba70c acp_hs +3ac07334-41ce-4447-a2c5dff0d1fa1392 acp_sp +2ef92c66-78a4-41f7-b52f5539707a9382 acp_sp_common +5871f3ca-dd92-4edb-8a94d651dd208b1e acp_sw_audio +30290c76-6a05-4784-8464c21f09cee87e afe_dai +4e8f16d1-e935-41f4-b99e42c57e745784 afedrv +c63c4e75-8f61-4420-93191395932efa9e agent_work +ea9c4bca-5b7d-48c6-9586553e27235beb ams +72cee996-39f2-11ed-a08f97fcc42eaaeb aplay +66def9f0-39f2-11ed-f789af98a6440cc4 arecord +99f7166d-372c-43ef-81f622007aa15f03 aria +c8ec72f6-8526-4faf-9d39a23d0b541de2 asrc +66b4402d-b468-42f2-81a7b37121863dd4 asrc4 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