lm4f: Created a meson build system for the Tiva-C series support

include/libopencm3/lm3s/meson.build

@@ -0,0 +1,46 @@
+# This file is part of the libopencm3 project.
+#
+# Copyright (C) 2023 1BitSquared <info@1bitsquared.com>
+# Written by Rachel Mant <git@dragonmux.network>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+#    contributors may be used to endorse or promote products derived from
+#    this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+lm3s_nvic_header = custom_target(
+	'nvic.h',
+	command: [irq2nvic, '@INPUT@'],
+	input: 'irq.json',
+	# We only name one of the 3 output files due to how this all works.
+	# This script will write:
+	# - include/libopencm3/lm3s/nvic.h
+	# - lib/lm3s/vector_nvic.c
+	# - include/libopencmsis/lm3s/irqhandlers.h
+	output: 'nvic.h',
+	install: false,
+)
+
+lm3s_vector_nvic = declare_dependency(
+	sources: lm3s_nvic_header,
+)

include/meson.build

@@ -36,10 +36,11 @@ target_paths = {
 	'stm32f3': 'stm32/f3',
 	'stm32f4': 'stm32/f4',
 	'stm32f7': 'stm32/f7',
+	'lm4f': 'lm3s',
 }
 
 if target_platform != 'all'
-	target_path = target_paths[target_platform]
+	target_path = target_paths.get(target_platform, target_platform)
 	subdir(f'libopencm3/@target_path@')
 else
 	foreach target_name, target_path : target_paths

lib/lm4f/meson.build

@@ -0,0 +1,78 @@
+# This file is part of the libopencm3 project.
+#
+# Copyright (C) 2023 1BitSquared <info@1bitsquared.com>
+# Written by Rachel Mant <git@dragonmux.network>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+#    contributors may be used to endorse or promote products derived from
+#    this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+lm4f_cm3 = declare_dependency(
+	sources: cm3_sources,
+	dependencies: lm3s_vector_nvic,
+)
+
+# Sources specific to the LM4F (Tiva-C) series
+liblm4f_sources = files(
+	'gpio.c',
+	'rcc.c',
+	'systemcontrol.c',
+	'uart.c',
+)
+
+liblm4f_compile_args = [
+	'-mfloat-abi=hard',
+	'-mfpu=fpv4-sp-d16',
+	'-mcpu=cortex-m4',
+	'-mthumb',
+	'-DLM4F',
+]
+
+# Build a static library for the target platform
+liblm4f = static_library(
+	'opencm3_lm4f',
+	[
+		liblm4f_sources,
+		usb_lm4f_sources,
+	],
+	c_args: liblm4f_compile_args,
+	include_directories: common_includes,
+	dependencies: [
+		lm4f_cm3,
+		usb_common,
+	],
+	pic: false,
+)
+
+# Make the dependency available to use
+libopencm3_lm4f = declare_dependency(
+	compile_args: liblm4f_compile_args,
+	include_directories: common_includes,
+	link_with: liblm4f,
+	link_args: [
+		f'-L@locm3_ld_script_path@',
+	],
+)
+
+meson.override_dependency('opencm3_lm4f', libopencm3_lm4f)

lib/meson.build

@@ -39,3 +39,6 @@ locm3_ld_script_path = meson.current_source_dir()
 if target_platform.startswith('stm32') or target_platform == 'all'
 	subdir('stm32')
 endif
+if target_platform == 'lm4f' or target_platform == 'all'
+	subdir('lm4f')
+endif

meson_options.txt

@@ -8,6 +8,7 @@ option(
 		'stm32f3',
 		'stm32f4',
 		'stm32f7',
+		'lm4f',
 	],
 	value: 'all',
 	description: 'The hardware platform you wish to target'