Merge changes from topic "bk/python_dependencies" into integration

* changes:
  build(docs): update Python dependencies
  fix(docs): make required compiler version == rather than >=
  fix(deps): add missing aeabi_memset.S

docs/getting_started/prerequisites.rst

@@ -31,11 +31,17 @@ target the Armv7-A or Armv8-A architectures:
    You will need the targets ``arm-none-eabi`` and ``aarch64-none-elf`` for
    AArch32 and AArch64 builds respectively.
 
-- Clang >= 14.0.0
-- Arm Compiler >= 6.18
+- Clang == 14.0.0
+- Arm Compiler == 6.18
 
 In addition, a native compiler is required to build the supporting tools.
 
+.. note::
+   Versions greater than the ones specified are likely but not guaranteed to
+   work. This is predominantly because TF-A carries its own copy of compiler-rt,
+   which may be older than the version expected by the compiler. Fixes and bug
+   reports are always welcome.
+
 .. note::
    The software has also been built on Windows 7 Enterprise SP1, using CMD.EXE,
    Cygwin, and Msys (MinGW) shells, using version 5.3.1 of the GNU toolchain.

docs/requirements.in

@@ -1,5 +1,5 @@
-myst-parser==0.15.2
+myst-parser==0.18.1
 pip-tools==6.4.0
-sphinx==4.2.0
-sphinx-rtd-theme==1.0.0
-sphinxcontrib-plantuml==0.22
+sphinx==5.3.0
+sphinx-rtd-theme==1.1.1
+sphinxcontrib-plantuml==0.24.1

docs/requirements.txt

@@ -1,71 +1,71 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.8
+# by the following command:
 #
-#    pip-compile
+#    pip-compile docs/requirements.in
 #
 alabaster==0.7.12
     # via sphinx
-attrs==21.2.0
-    # via markdown-it-py
-babel==2.9.1
+babel==2.11.0
     # via sphinx
-certifi==2021.5.30
+certifi==2022.12.7
     # via requests
-charset-normalizer==2.0.4
+charset-normalizer==2.1.1
     # via requests
-click==8.0.1
+click==8.1.3
     # via pip-tools
-docutils==0.16
+docutils==0.17.1
     # via
     #   myst-parser
     #   sphinx
     #   sphinx-rtd-theme
-idna==3.2
+idna==3.4
     # via requests
-imagesize==1.2.0
+imagesize==1.4.1
     # via sphinx
-jinja2==3.0.1
+importlib-metadata==6.0.0
+    # via sphinx
+jinja2==3.1.2
     # via
     #   myst-parser
     #   sphinx
-markdown-it-py==1.1.0
+markdown-it-py==2.1.0
     # via
     #   mdit-py-plugins
     #   myst-parser
-markupsafe==2.0.1
+markupsafe==2.1.1
     # via jinja2
-mdit-py-plugins==0.2.8
+mdit-py-plugins==0.3.3
     # via myst-parser
-myst-parser==0.15.2
-    # via -r requirements.in
-packaging==21.0
+mdurl==0.1.2
+    # via markdown-it-py
+myst-parser==0.18.1
+    # via -r docs/requirements.in
+packaging==23.0
     # via sphinx
-pep517==0.11.0
+pep517==0.13.0
     # via pip-tools
 pip-tools==6.4.0
-    # via -r requirements.in
-pygments==2.10.0
+    # via -r docs/requirements.in
+pygments==2.14.0
     # via sphinx
-pyparsing==2.4.7
-    # via packaging
-pytz==2021.1
+pytz==2022.7
     # via babel
 pyyaml==6.0
     # via myst-parser
-requests==2.26.0
+requests==2.28.1
     # via sphinx
-snowballstemmer==2.1.0
+snowballstemmer==2.2.0
     # via sphinx
-sphinx==4.2.0
+sphinx==5.3.0
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   myst-parser
     #   sphinx-rtd-theme
     #   sphinxcontrib-plantuml
-sphinx-rtd-theme==1.0.0
-    # via -r requirements.in
-sphinxcontrib-applehelp==1.0.2
+sphinx-rtd-theme==1.1.1
+    # via -r docs/requirements.in
+sphinxcontrib-applehelp==1.0.3
     # via sphinx
 sphinxcontrib-devhelp==1.0.2
     # via sphinx
@@ -73,18 +73,22 @@ sphinxcontrib-htmlhelp==2.0.0
     # via sphinx
 sphinxcontrib-jsmath==1.0.1
     # via sphinx
-sphinxcontrib-plantuml==0.22
-    # via -r requirements.in
+sphinxcontrib-plantuml==0.24.1
+    # via -r docs/requirements.in
 sphinxcontrib-qthelp==1.0.3
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.5
     # via sphinx
-tomli==1.2.1
+tomli==2.0.1
     # via pep517
-urllib3==1.26.6
+typing-extensions==4.4.0
+    # via myst-parser
+urllib3==1.26.13
     # via requests
-wheel==0.37.0
+wheel==0.38.4
     # via pip-tools
+zipp==3.11.0
+    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip

lib/compiler-rt/builtins/arm/aeabi_memset.S

@@ -0,0 +1,49 @@
+//===-- aeabi_memset.S - EABI memset implementation -----------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "../assembly.h"
+
+//  void __aeabi_memset(void *dest, size_t n, int c) { memset(dest, c, n); }
+//  void __aeabi_memclr(void *dest, size_t n) { __aeabi_memset(dest, n, 0); }
+
+        .syntax unified
+        .p2align 2
+DEFINE_COMPILERRT_FUNCTION(__aeabi_memset)
+        mov     r3, r1
+        mov     r1, r2
+        mov     r2, r3
+#ifdef USE_THUMB_1
+        push    {r7, lr}
+        bl      memset
+        pop     {r7, pc}
+#else
+        b       memset
+#endif
+END_COMPILERRT_FUNCTION(__aeabi_memset)
+
+DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memset4, __aeabi_memset)
+DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memset8, __aeabi_memset)
+
+        .p2align 2
+DEFINE_COMPILERRT_FUNCTION(__aeabi_memclr)
+        mov     r2, r1
+        movs    r1, #0
+#ifdef USE_THUMB_1
+        push    {r7, lr}
+        bl      memset
+        pop     {r7, pc}
+#else
+        b       memset
+#endif
+END_COMPILERRT_FUNCTION(__aeabi_memclr)
+
+DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memclr4, __aeabi_memclr)
+DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memclr8, __aeabi_memclr)
+
+NO_EXEC_STACK_DIRECTIVE
+

lib/compiler-rt/compiler-rt.mk

@@ -35,6 +35,7 @@ ifeq (${ARCH},aarch32)
 COMPILER_RT_SRCS	+=	lib/compiler-rt/builtins/arm/aeabi_ldivmod.S	\
 				lib/compiler-rt/builtins/arm/aeabi_uldivmod.S	\
 				lib/compiler-rt/builtins/arm/aeabi_memcpy.S	\
+				lib/compiler-rt/builtins/arm/aeabi_memset.S	\
 				lib/compiler-rt/builtins/ctzdi2.c		\
 				lib/compiler-rt/builtins/divdi3.c		\
 				lib/compiler-rt/builtins/divmoddi4.c		\