* Fix Bazel build breakages
* Adds support for new PICO_DEFAULT_UART_BAUD_RATE option.
* Fixes issues related to Picotool and boot_picoboot_headers.
* Adds pico_float RISC-V pieces to the Bazel build (not yet fully
tested).
* Adds the missing adafruit board header to the Bazel build.
* Exclude hazard3 float test in Bazel validation script
* Restore missing dependency in hardware_boot_lock
* Add host Bazel build
Updates target_compatible_with across the repo to ensure that wildcard
builds for both host and rp2040 succeed.
* Get unit tests building
* Add Python script to identify build system differences
Uses the build system tags to make it easier to identify differences
between the CMake and Bazel builds.
* Temporarily disable pico divider test
* Support PICO_BARE_METAL in Bazel
* Support PICO_NO_GC_SECTIONS in Bazel
* Support boot2 configuration in Bazel
Adds support for PICO_DEFAULT_BOOT_STAGE2 and
PICO_DEFAULT_BOOT_STAGE2_FILE in the Bazel build.
* Allowlist some CMake-only options
* Support CXX configuration options in Bazel
* Move multiple_choice_flag.bzl
* Support all pico boards
* Support linking multiple stdio implementations
Changes the Bazel build so stdio implementations are no longer mutually
exclusive.
* Add PICO_BOOT_STAGE2_LINK_IMAGE
* Support PICO_CMSIS_PATH in Bazel
* Support PICO_USE_DEFAULT_MAX_PAGE_SIZE in Bazel
* Silence PICO_CMSIS_VENDOR and PICO_CMSIS_DEVICE differences
* Support PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS in Bazel
* Properly support version defines
* Support embedding binary info in Bazel
* Embed build type in binary
* Support different linker scripts in Bazel build
* Finish out missing PICO_BUILD_DEFINE in Bazel build
* Support PICO_NO_TARGET_NAME
* Reorganize initial configuration options in Bazel
Cleans up and reorganizes some of the initial configuration options
added to the Bazel build so everything is consistent.
* Add builds for pioasm and elf2uf2
* Use Python rules from rules_python
* Actually link in output formats in pioasm tool
* Make tools have public visibility
* Add UF2 Bazel aspect
* Add TODOs for pioasm/uf2 helpers
* Fix compile flag typo
* Update Bazel SDK configuration strings to match recent CMake changes
* Fix pico_divider test
* Clean up straggling TODOs
* Clarify pico_stdio_test compatibility
* Initial Bazel Pico W support
* Add new files from develop
* Clean up compatibility expressions in Bazel build
* Clean up rp2 constraint handling in Bazel
* More Bazel docs cleanup
* Format Bazel build files
* Consolidate transitions in the Pico SDK
* Make every _allowlist_function_transition explicit
* More docs cleanup
* Add a few missing defines
* Improve PICO_CONFIG_HEADER correctness in Bazel
* Minor docs clarifications
* Build boot_stage2 with Bazel
Introduces the initial foundations of a Bazel build, including a
toolchain, critical generated headers, platform patterns, and enough
BUILD files to build boot_stage2.
* Bazel libraries to support picotool
* Move SDK defines to toolchain
* Switch to `archive_override` in MODULE.bazel
Uses archive_override where applicable to allow transitive bzlmod deps
to propagate.
* Multiplatform objcopy selection in Bazel build
Makes an objcopy alias that redirects to the objcopy tool for the
current exec platform, which allows boot_stage2 to build on Linux,
macOS, and Windows.
* Generate Bazel build files
Adds initial set of generated Bazel build files. Note that these do not
yet build, as dependency cycles are present.
* Fix dependency cycles in Bazel build
Fixes many dependency cycles, some were unintentionally created by the
build file generator, others are true dependency cycles that require
manual workarounds.
* Silence warning in pico_stdio Bazel build
Silences a stray warning in the Bazel build.
* Fix wildcard Bazel build
This makes `bazel build //...` succeed, and also prevents the fetching
of toolchains that aren't compatible with the current execution
environment (i.e. Windows computers will no longer try to download macOS
toolchains).
* Get the SDK working
Finishes out the remainder of the work required to successfully compile
a working blinky example.
* Fix UART stdio dependencies in Bazel build
Fixes some dependencies around pico_stdlib so that pico_stdlib links
properly and UART stdio works.
* Add linux support to Bazel build
* Get Bazel deps from registry
Adds external an external registry for resolving Bazel module
dependencies.
* Fix host configuration for picotool
Provides the appropriate defines for host builds to support the picotool
build.
* Remove -ffreestanding from Bazel toolchain
The -ffreestanding toolchain flag is quite strict, so remove it from the
Bazel toolchain.
* Remove unused .bzl file
* Reduce Bazel compiler flags
Cuts out most of the Bazel toolchain flags and only specifies the
bare-minimum set of flags. Also, adds wrapper linker flags for functions
the SDK wraps.
* Get USB serial working
Adds initial TinyUSB support and enough integration to get USB serial
working.
* Remove "Generated build file"
Removes comments that indicates BUILD.bazel files are generated. This
was used during initial bringup to indicate hand-crafted vs
automatically generated BUILD.bazel files.
* Do not build USB libraries unless configured
Prevents USB libraries from being built unless the build is properly
configured to use them.
* Switch to rules_cc toolchains
Moves toolchain configuration to use the new rules in rules_cc.
* Minor cleanup in parse_version.py
Cleans up trailing whitespace and runs the black formatter on
parse_version.py.
* Simplify constraint dimensions in Bazel build
Consolidates the class/chip constraint settings to be a single
constraint_setting with a config_setting that represents the rp2 class.
* Update pin of rules_cc in Bazel build
Includes a necessary fix for the target_compatible_with expression in
the cc_toolchain to work as intended.
* Move toolchains from pico.bzl to BUILD.bazel
Moves toolchain definitions from pico.bzl to BUILD.bazel to make them
easier to find and read.
* Run buildifier on Bazel build files
Fix trivial formatting issues by running buildifier on all BUILD.bazel
files.
* Make objcopy rule
Makes a simple objcopy rule to remove direct references to the ARM
toolchains.
* Fix link flags in Bazel build
Critical flags were not being applied to link steps. This applies -mcpu
and -mthumb to the link steps to make the produced binaries work again.
* Mention missing host build support
* Fix various Bazel library rules
* pico_bit_ops was incomplete.
* pico_double and pico_float were trying to link in the "none"
implementation.
* Extend Bazel build documentation
Improves documentation and comments across the Bazel build.
* Clean up auxilary tools in Bazel build
Switches genrules to use skylib rules to simplify things. Reworks
version header generation to use the Bazel module version rather than
parsing CMake.
* Update boot_stage2 Bazel build file
Moves `includes` to be enumerated on the correct library.
* Add WORKSPACE version fallback
WORKSPACE Bazel projects don't support querying module version, so add a
fallback of '0.0.1-WORKSPACE' so the build can succeed.
* Fix malloc handling in Bazel build
* Fix Bazel dependency cycle in pico_malloc
* Prevent malloc from being linked into boot_stage2
Prevents Bazel from ever trying to link malloc into the boot_stage2
binary.
* Remove custom bootloader platform
A dedicated boot_stage2 platform introduces a lot of complexity that
needs to be more thought-through.
* Add new pico_flash library, with flash_safe_execute(func) method to help with preventing IRQs and other core accessing flash with pico_multicore or FreeRTOS SMP
* Allow pre-processor overrides for Clock/PLL setup
* Use `_KHZ` rather than `_MHZ` for `XOSC_` `SYS_CLOCK_` etc definitions (`_MHZ` versions are provided for compatibility when `_KHZ` is a multiple of 1000)
Co-authored-by: graham sanderson <graham.sanderson@raspberrypi.com>
* Fix various non-GCC warnings (no effect on GCC)
* Reduce use of typeof since non GCC compilers may not support it
* Introduce PICO_C_COMPILER_IS_GNU, PICO_C_COMPILER_IS_CLANG, PICO_C_COMPILER_IS_IAR to CMake as if (CMAKE_C_COMPILER_ID STREQUAL "xxx") is a bit verbose
* Use "unified_asm" macro for all inline asm (it is "volatile __asm" on GNU with a .syntex unified)
* Use NOLOAD instead of COPY in linker scripts (arguably more correct anyway)
* Use the same style for setting _etext in all 4 linker scripts (to the beginning of .data). Clang aligns .data on a 16 byte boundary. Note ideally we'd
add a new symbol __data_source, however that would break backwards compatibility with existing user linker scripts
* Use "a" for .stack, .heap sections because clang complains otherwise, and they are explicitly NOLOAD anyway
* Avoid duplicating __sev, __wfe, __wfi which Clang sometimes seems to provide as built-ins
* Add missing kitchen_sink_blocked_ram binary
* Allow build with LLVM Embedded Toolchain Form ARM v 14.0.0 (unsupported atm)
* * Harden stdio_usb and stdio in general against deadlocks which could otherwise result from doing printfs from within IRQs
* Add a test for the above
* Add mutex_try_enter_block_until API.
* Make best_effort_wfe_or_timeout not use alarms if called from within IRQ
1. Make sure Pico SDK libraries have the correct dependencies on other SDK libraries
2. Pico SDK libraries all have _headers variants to include the headers. This may facilitate building user STATIC libraries without
pulling in SDK code, though care will still need to be taken w.r.t. values of #defines
3. Make sure the _headers versions also have the correct dependencies
Note: There are a few exceptions to 1. for some non code libraries like pico_standard_link and pico_cxx_options
* Remove (legacy) direct inclusion of 'pico/platform.h' which potentially skip config/board setup
* also fix direct use of pico/config.h which predated pico.h being assembly includable
* Extract all poll/threadsafe_background/freertos from cyw43_arch into new abstraction async_context:
* provides support for asynchronous events (timers/IRQ notifications) to be handled in a safe context.
* now guarantees all callbacks happen on a single core.
* is reusable by multiple different libraries (stdio_usb can now be ported to this but hasn't been yet).
* supports multiple independent instances (independent instances will not block each other).
* cyw43_arch libraries cleaned up to use the new abstraction. Note each distinct cyw43_arch type is now a very thin layer that creates the right type of context and adds cyw43_driver and lwip support as appropriate.
Additionally,
* Add new pico_time and hardware_alarm APIs
* Add from_us_since_boot()
* Add alarm_pool_create_with_unused_hardware_alarm()
* Add alarm_pool_add_alarm_at_force_in_context()
* Add hardware_alarm_claim_unused()
* Add hardware_alarm_force_irq()
* Added panic_compact() and some minor comment cleanup; moved FIRST_USER_IRQ define to platform_defs.h
* SYS functions and GCC 12 fixes
* Add implementation of _gettimeofday and settimeofday, _times
* Remove some GCC warnings about unimplemented SYS functions (e.g. _open) by making weak implementations that return errors.
* Removed _exit from crt0.S since we have a weak version in runtime.c and we don't want two weak impls since the linker can't pick. If the user omits runtime.c then they'll need to provide _exit or get the error
* Add sys/time.h to arch/cc.h for lwIP as it seems under GCC12 this is not getting included
* Platform updates
- Add PICO_RP2040=1 to rp2040 builds
- Add new PICO_RP2040_B0/1/2_SUPPORTED macros and retailer chip specific code to use
- Add doxygen to platform.h
- Make pico.h includable from assembly (because header order is important and tricky) - split out platform_asm.h
- Switch to using PICO_RP2040_B0_SUPPORTED in board headers
