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# Copyright 2022 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
import("//build_overrides/pigweed.gni")
import("$dir_pw_build/linker_script.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_docgen/docs.gni")
import("$dir_pw_malloc/backend.gni")
import("$dir_pw_system/system_target.gni")
import("$dir_pw_third_party/smartfusion_mss/mss.gni")
import("$dir_pw_tokenizer/backend.gni")
import("$dir_pw_toolchain/generate_toolchain.gni")
config("pw_malloc_active") {
if (pw_malloc_BACKEND != "") {
defines = [ "PW_MALLOC_ACTIVE=1" ]
}
}
config("emcraft_ddr_init") {
# Emcraft's DDR config must be manually set by a custom init function. This
# conflicts with the built-in MSS init function. I have not looked into this
# myself to see if it's absoutely needed or not.
defines = [ "MSS_SYS_MDDR_CONFIG_BY_CORTEX=0" ]
}
if (current_toolchain != default_toolchain) {
pw_linker_script("mddr_debug_linker_script") {
defines = [
"PW_BOOT_CODE_BEGIN=0x00000200", # After vector table.
# TODO(skeys) Bootloader is capable of loading 16M of uncompressed code
# from SPI flash to external RAM. For now use the allocated eNVM flash
# (256K - Bootloader - InSystemProgrammer = 192K)
"PW_BOOT_CODE_SIZE=0x30000",
# TODO(b/235348465): Currently "pw_tokenizer/detokenize_test" requires at
# least 6K bytes in heap when using pw_malloc_freelist. The heap size
# required for tests should be investigated.
"PW_BOOT_HEAP_SIZE=4M",
# With external RAM remapped, we use the entire internal ram for the
# stack (64K).
"PW_BOOT_MIN_STACK_SIZE=64K",
# Using external DDR RAM, we just need to make sure we go past our ROM
# sections.
"PW_BOOT_RAM_BEGIN=0xA1000000",
# We assume that the bootloader loaded all 16M of text.
"PW_BOOT_RAM_SIZE=48M",
"PW_BOOT_VECTOR_TABLE_BEGIN=0x00000000",
"PW_BOOT_VECTOR_TABLE_SIZE=512",
]
linker_script = "emcraft_sf2_som_mddr_debug.ld"
}
pw_linker_script("mddr_production_linker_script") {
defines = [
"PW_BOOT_FLASH_BEGIN=0x00000200", # After vector table.
# TODO(skeys) Bootloader is capable of loading 16M of uncompressed code
# from SPI flash to external RAM. For now use the allocated eNVM flash
# (256K - Bootloader - InSystemProgrammer = 192K)
"PW_BOOT_FLASH_SIZE=0x30000",
# TODO(b/235348465): Currently "pw_tokenizer/detokenize_test" requires at
# least 6K bytes in heap when using pw_malloc_freelist. The heap size
# required for tests should be investigated.
"PW_BOOT_HEAP_SIZE=4M",
# With external RAM remapped, we use the entire internal ram for the
# stack (64K).
"PW_BOOT_MIN_STACK_SIZE=1024K",
# Using external DDR RAM, we just need to make sure we go past our ROM
# sections.
"PW_BOOT_RAM_BEGIN=0xA1000000",
# We assume that the bootloader loaded all 16M of text.
"PW_BOOT_RAM_SIZE=48M",
"PW_BOOT_VECTOR_TABLE_BEGIN=0x00000000",
"PW_BOOT_VECTOR_TABLE_SIZE=512",
]
linker_script = "$dir_pw_boot_cortex_m/basic_cortex_m.ld"
}
pw_source_set("pre_init") {
configs = [ ":pw_malloc_active" ]
deps = [
"$dir_pw_boot",
"$dir_pw_boot_cortex_m",
"$dir_pw_malloc",
"$dir_pw_preprocessor",
"$dir_pw_string",
"$dir_pw_sys_io_emcraft_sf2",
"$dir_pw_system",
"$dir_pw_third_party/freertos",
]
sources = [
"boot.cc",
"vector_table.c",
]
}
config("config_includes") {
include_dirs = [ "config" ]
configs = [ ":emcraft_ddr_init" ]
}
pw_source_set("sf2_mss_hal_config") {
public_configs = [ ":config_includes" ]
public =
[ "config/sf2_mss_hal_conf.h" ] # SKEYS likely want to put the MDDR
# config by cortex etc stuff here
}
pw_source_set("sf2_freertos_config") {
public_configs = [ ":config_includes" ]
public_deps = [ "$dir_pw_third_party/freertos:config_assert" ]
public = [ "config/FreeRTOSConfig.h" ]
}
}
# Configured for use with a first stage boot loader to configure DDR and
# perform memory remapping.
pw_system_target("emcraft_sf2_som") {
cpu = PW_SYSTEM_CPU.CORTEX_M3
scheduler = PW_SYSTEM_SCHEDULER.FREERTOS
link_deps = [ "$dir_pigweed/targets/emcraft_sf2_som:pre_init" ]
build_args = {
pw_log_BACKEND = dir_pw_log_tokenized
pw_log_tokenized_HANDLER_BACKEND = "$dir_pw_system:log_backend.impl"
pw_third_party_freertos_CONFIG =
"$dir_pigweed/targets/emcraft_sf2_som:sf2_freertos_config"
pw_third_party_freertos_PORT = "$dir_pw_third_party/freertos:arm_cm3"
pw_sys_io_BACKEND = dir_pw_sys_io_emcraft_sf2
pw_boot_cortex_m_LINKER_SCRIPT =
"//targets/emcraft_sf2_som:mddr_production_linker_script"
}
}
# Debug target configured to work with MSS linker script and startup code.
# TODO(skeys) Add linker script and config for debug builds using SoftConsole.
pw_system_target("emcraft_sf2_som_debug") {
cpu = PW_SYSTEM_CPU.CORTEX_M3
scheduler = PW_SYSTEM_SCHEDULER.FREERTOS
link_deps = [ "$dir_pigweed/targets/emcraft_sf2_som:pre_init" ]
build_args = {
pw_log_BACKEND = dir_pw_log_tokenized
pw_log_tokenized_HANDLER_BACKEND = "$dir_pw_system:log_backend.impl"
pw_third_party_freertos_CONFIG =
"$dir_pigweed/targets/emcraft_sf2_som:sf2_freertos_config"
pw_third_party_freertos_PORT = "$dir_pw_third_party/freertos:arm_cm3"
pw_sys_io_BACKEND = dir_pw_sys_io_emcraft_sf2
# Override the default pw_boot_cortex_m linker script and set the memory
# regions for the target.
pw_boot_cortex_m_LINKER_SCRIPT =
"//targets/emcraft_sf2_som:mddr_debug_linker_script"
pw_third_party_smartfusion_mss_CONFIG = "debug"
}
}
pw_doc_group("docs") {
sources = [ "target_docs.rst" ]
}
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