xref: /aosp_15_r20/external/pigweed/targets/stm32f429i_disc1/BUILD.bazel (revision 61c4878ac05f98d0ceed94b57d316916de578985) 
1# Copyright 2020 The Pigweed Authors
2#
3# Licensed under the Apache License, Version 2.0 (the "License"); you may not
4# use this file except in compliance with the License. You may obtain a copy of
5# the License at
6#
7#     https://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12# License for the specific language governing permissions and limitations under
13# the License.
14
15load("@rules_python//sphinxdocs:sphinx_docs_library.bzl", "sphinx_docs_library")
16load("//pw_build:compatibility.bzl", "incompatible_with_mcu")
17load("//pw_build:merge_flags.bzl", "flags_from_dict")
18load("//pw_build:pw_linker_script.bzl", "pw_linker_script")
19
20package(default_visibility = ["//visibility:public"])
21
22licenses(["notice"])
23
24platform(
25    name = "platform",
26    constraint_values = [
27        "//pw_interrupt_cortex_m:backend",
28        "//pw_malloc:bucket_block_allocator_backend",
29        "//pw_sys_io_baremetal_stm32f429:compatible",
30        "@platforms//cpu:armv7e-m",
31        "@platforms//os:none",
32        "@pw_toolchain//constraints/arm_mcpu:cortex-m4",
33        "@rust_crates//:no_std",
34    ],
35    flags = flags_from_dict({
36        "@pigweed//pw_assert:check_backend": "//pw_assert_basic",
37        "@pigweed//pw_assert:check_backend_impl": "//pw_assert_basic:impl",
38        "@pigweed//pw_boot:backend": "//pw_boot_cortex_m",
39        "@pigweed//pw_log:backend": "//pw_log_basic",
40        "@pigweed//pw_log:backend_impl": "//pw_log_basic:impl",
41        "@pigweed//pw_malloc:backend": "//pw_malloc:bucket_block_allocator",
42        "@pigweed//pw_sys_io:backend": "//pw_sys_io_baremetal_stm32f429",
43        "@pigweed//pw_system:extra_platform_libs": "//targets/stm32f429i_disc1:extra_platform_libs",
44    }),
45)
46
47cc_library(
48    name = "pre_init",
49    srcs = [
50        "boot.cc",
51        "vector_table.c",
52    ],
53    defines = [
54        "PW_MALLOC_ACTIVE=1",
55    ],
56    deps = [
57        "//pw_boot",
58        "//pw_malloc",
59        "//pw_preprocessor",
60        "//pw_sys_io_baremetal_stm32f429",
61    ],
62    # TODO: b/251939135 - Remove the need for alwayslink by rethinking how
63    # pw_boot_cortex_m is structured in the build system.
64    alwayslink = 1,
65)
66
67cc_library(
68    name = "extra_platform_libs",
69    deps = [
70        # The initialization code.
71        ":pre_init",
72        # Arm GCC support libraries.
73        "//pw_toolchain/arm_gcc:arm_none_eabi_gcc_support",
74    ],
75)
76
77pw_linker_script(
78    name = "basic_linker_script",
79    # These come from
80    # https://cs.opensource.google/pigweed/pigweed/+/main:targets/stm32f429i_disc1/target_toolchains.gni
81    # TODO(tpudlik): Figure out how to share them between bazel and GN.
82    defines = [
83        "PW_BOOT_FLASH_BEGIN=0x08000200",
84        "PW_BOOT_FLASH_SIZE=1024K",
85        "PW_BOOT_HEAP_SIZE=112K",
86        "PW_BOOT_MIN_STACK_SIZE=1K",
87        "PW_BOOT_RAM_BEGIN=0x20000000",
88        "PW_BOOT_RAM_SIZE=192K",
89        "PW_BOOT_VECTOR_TABLE_BEGIN=0x08000000",
90        "PW_BOOT_VECTOR_TABLE_SIZE=512",
91    ],
92    linker_script = "//pw_boot_cortex_m:basic_cortex_m.ld",
93)
94
95sphinx_docs_library(
96    name = "docs",
97    srcs = [
98        "target_docs.rst",
99    ],
100    target_compatible_with = incompatible_with_mcu(),
101)
102