67cb1741c6
Uses the no-OS-FatFS-SD-SPI-RPi-Pico library, and on startup opens the fs to search for 'umac0.img' or 'umac0ro.img'. If the former is found, it's used as a RW image; the latter is RO. If no images are found, the code falls back to an in-flash disc image; you can set up a default that's used if no SD card is inserted, for example. The wiring defaults to GPIOs 2/3/4/5 for SCK/TX/RX/CS respectively, which matches the upper-left SPI0 on the Pico board. The wiring can be overridden by defining SD_TX, SD_RX, SD_SCK, SD_CS on the `cmake` build commandline. The SPI speed defaults to a very conservative 5MHz (at least one of my cards will only cope with this). Again, this can be overridden by defining SD_MHZ on the commandline (to an integer in units of MHz). Note this also disables the RTC portion of FatFS when building for RP2350 (which doesn't have an RTC, or APIs for it).
137 lines
4.2 KiB
CMake
137 lines
4.2 KiB
CMake
# CMakeLists
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#
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# MIT License
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#
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# Copyright (c) 2021, 2024 Matt Evans
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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#
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cmake_minimum_required(VERSION 3.13)
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# Options that should be defined when initialising the build
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# directory with cmake, e.g. "cmake .. -DOPTION=true":
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#
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option(USE_SD "Build in SD support" OFF)
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set(SD_TX 3 CACHE STRING "SD SPI TX pin")
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set(SD_RX 4 CACHE STRING "SD SPI RX pin")
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set(SD_SCK 2 CACHE STRING "SD SPI SCK pin")
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set(SD_CS 5 CACHE STRING "SD SPI CS pin")
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set(SD_MHZ 5 CACHE STRING "SD SPI speed in MHz")
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# See below, -DMEMSIZE=<size in KB> will configure umac's memory size,
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# overriding defaults.
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# initialize the SDK based on PICO_SDK_PATH
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# note: this must happen before project()
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include(pico_sdk_import.cmake)
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project(firmware)
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# initialize the Raspberry Pi Pico SDK
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pico_sdk_init()
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# For TUSB host stuff:
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set(FAMILY rp2040)
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set(BOARD raspberry_pi_pico)
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set(TINYUSB_PATH ${PICO_SDK_PATH}/lib/tinyusb)
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# umac subproject (and Musashi sub-subproject)
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set(UMAC_PATH ${CMAKE_CURRENT_SOURCE_DIR}/external/umac)
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set(UMAC_MUSASHI_PATH ${UMAC_PATH}/external/Musashi)
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set(UMAC_INCLUDE_PATHS ${UMAC_PATH}/include ${UMAC_MUSASHI_PATH})
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# This isn't very nice, but hey it's Sunday :p
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set(UMAC_SOURCES
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${UMAC_PATH}/src/disc.c
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${UMAC_PATH}/src/main.c
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${UMAC_PATH}/src/rom.c
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${UMAC_PATH}/src/scc.c
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${UMAC_PATH}/src/via.c
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${UMAC_MUSASHI_PATH}/m68kcpu.c
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${UMAC_MUSASHI_PATH}/m68kdasm.c
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${UMAC_MUSASHI_PATH}/m68kops.c
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${UMAC_MUSASHI_PATH}/softfloat/softfloat.c
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)
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set(MEMSIZE 128 CACHE STRING "Memory size, in KB")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 -DPICO -DMUSASHI_CNF=\\\"../include/m68kconf.h\\\" -DUMAC_MEMSIZE=${MEMSIZE}")
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if (USE_SD)
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add_compile_definitions(USE_SD=1)
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set(FF_DISABLE_RTC ${PICO_RP2350}) # RP2350 doesn't have RTC, so disable it
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add_subdirectory(external/no-OS-FatFS-SD-SPI-RPi-Pico/FatFs_SPI build)
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set(EXTRA_SD_SRC src/sd_hw_config.c)
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set(EXTRA_SD_LIB FatFs_SPI)
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add_compile_definitions(SD_TX=${SD_TX} SD_RX=${SD_RX} SD_SCK=${SD_SCK} SD_CS=${SD_CS} SD_MHZ=${SD_MHZ})
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endif()
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if (TARGET tinyusb_device)
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add_executable(firmware
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src/main.c
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src/video.c
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src/kbd.c
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src/hid.c
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${EXTRA_SD_SRC}
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${UMAC_SOURCES}
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)
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# The umac sources need to prepare Musashi (some sources are generated):
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add_custom_command(OUTPUT ${UMAC_MUSASHI_PATH}/m68kops.c
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COMMAND echo "*** Preparing umac source ***"
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COMMAND make -C ${UMAC_PATH} prepare
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)
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add_custom_target(prepare_umac
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DEPENDS ${UMAC_MUSASHI_PATH}/m68kops.c
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)
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add_dependencies(firmware prepare_umac)
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target_link_libraries(firmware
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pico_stdlib
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pico_multicore
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tinyusb_host
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tinyusb_board
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hardware_dma
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hardware_pio
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hardware_sync
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${EXTRA_SD_LIB}
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)
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target_include_directories(firmware PRIVATE
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${CMAKE_CURRENT_LIST_DIR}/include
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${TINYUSB_PATH}/hw
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${TINYUSB_PATH}/src
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${UMAC_INCLUDE_PATHS}
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incbin
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)
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pico_generate_pio_header(firmware ${CMAKE_CURRENT_LIST_DIR}/src/pio_video.pio)
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pico_enable_stdio_uart(firmware 1)
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# Needed for UF2:
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pico_add_extra_outputs(firmware)
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elseif(PICO_ON_DEVICE)
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message(WARNING "not building firmware because TinyUSB submodule is not initialized in the SDK")
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endif()
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