feat: add lab-rv32i-freertos-event-group card

2026-07-21 19:13:55 +02:00
commit b72408da7f
67 changed files with 37880 additions and 0 deletions
@@ -0,0 +1,72 @@
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+/* Hazard3 testbench: mtime advances once per simulated cycle. */
+#define configCPU_CLOCK_HZ                       ( 1000000UL )
+#define configTICK_RATE_HZ                       ( 1000U )
+#define configMTIME_BASE_ADDRESS                 ( 0xC0000100UL )
+#define configMTIMECMP_BASE_ADDRESS              ( 0xC0000108UL )
+
+#define configUSE_PREEMPTION                     1
+#define configUSE_TIME_SLICING                   1
+#define configNUMBER_OF_CORES                    1
+#define configUSE_PORT_OPTIMISED_TASK_SELECTION  0
+#define configUSE_IDLE_HOOK                      0
+#define configUSE_TICK_HOOK                      0
+#define configMAX_PRIORITIES                     5
+#define configMINIMAL_STACK_SIZE                 128
+#define configMAX_TASK_NAME_LEN                  12
+#define configTICK_TYPE_WIDTH_IN_BITS            TICK_TYPE_WIDTH_32_BITS
+#define configIDLE_SHOULD_YIELD                  1
+
+#define configSUPPORT_DYNAMIC_ALLOCATION         1
+#define configSUPPORT_STATIC_ALLOCATION          1
+#define configKERNEL_PROVIDED_STATIC_MEMORY      1
+#define configTOTAL_HEAP_SIZE                    ( 16U * 1024U )
+#define configAPPLICATION_ALLOCATED_HEAP         1
+#define configUSE_MALLOC_FAILED_HOOK             1
+#define configHEAP_CLEAR_MEMORY_ON_FREE          0
+
+#define configUSE_TIMERS                         0
+#define configUSE_MUTEXES                        0
+#define configUSE_RECURSIVE_MUTEXES              0
+#define configUSE_COUNTING_SEMAPHORES            0
+#define configUSE_TASK_NOTIFICATIONS             0
+#define configUSE_TRACE_FACILITY                 1
+#define configUSE_STATS_FORMATTING_FUNCTIONS     0
+#define configGENERATE_RUN_TIME_STATS            0
+#define configUSE_CO_ROUTINES                    0
+#define configUSE_NEWLIB_REENTRANT               0
+#define configUSE_POSIX_ERRNO                    0
+#define configCHECK_FOR_STACK_OVERFLOW           0
+#define configRECORD_STACK_HIGH_ADDRESS          1
+
+#define INCLUDE_vTaskDelay                       1
+#define INCLUDE_vTaskDelayUntil                  1
+#define INCLUDE_vTaskDelete                      1
+#define INCLUDE_vTaskSuspend                     0
+#define INCLUDE_eTaskGetState                    1
+#define INCLUDE_uxTaskPriorityGet                1
+#define INCLUDE_vTaskPrioritySet                 1
+#define INCLUDE_xTaskGetSchedulerState           1
+#define INCLUDE_xSemaphoreGetMutexHolder         1
+#define INCLUDE_uxTaskGetStackHighWaterMark      1
+
+/* Hazard3 is RV32I: no floating-point or vector register file to save. */
+#define configENABLE_FPU                         0
+#define configENABLE_VPU                         0
+
+/* Required by the pinned RISC-V port. */
+#define configISR_STACK_SIZE_WORDS               128
+
+#ifndef __ASSEMBLER__
+    #ifdef __cplusplus
+extern "C" void lab_assert_fail( const char * file, int line );
+    #else
+void lab_assert_fail( const char * file, int line );
+    #endif
+    #define configASSERT( condition ) do { if( !( condition ) ) { lab_assert_fail( __FILE__, __LINE__ ); } } while( 0 )
+#else
+    #define configASSERT( condition )
+#endif
+#endif
@@ -0,0 +1,151 @@
+#ifndef FREERTOS_CPP_EVENT_GROUP_HPP
+#define FREERTOS_CPP_EVENT_GROUP_HPP
+
+#include <stdint.h>
+#include <type_traits>
+
+extern "C"
+{
+#include "FreeRTOS.h"
+#include "event_groups.h"
+}
+
+namespace freertos
+{
+
+enum class WaitMode : uint8_t
+{
+    any,
+    all
+};
+
+enum class ClearMode : uint8_t
+{
+    keep,
+    clear_on_exit
+};
+
+template< typename Bit >
+class EventMask final
+{
+    static_assert( std::is_enum< Bit >::value,
+                   "EventMask requires an enum bit type" );
+
+public:
+    constexpr EventMask() noexcept = default;
+    explicit constexpr EventMask( Bit bit ) noexcept
+        : value_ { static_cast< EventBits_t >( bit ) }
+    {
+    }
+
+    [[nodiscard]] static constexpr EventMask from_raw(
+        EventBits_t value ) noexcept
+    {
+        return EventMask { value, RawTag {} };
+    }
+
+    [[nodiscard]] constexpr EventBits_t raw() const noexcept { return value_; }
+    [[nodiscard]] constexpr bool contains( EventMask other ) const noexcept
+    {
+        return ( value_ & other.value_ ) == other.value_;
+    }
+
+    friend constexpr EventMask operator|( EventMask left,
+                                          EventMask right ) noexcept
+    {
+        return from_raw( left.value_ | right.value_ );
+    }
+
+private:
+    struct RawTag {};
+    constexpr EventMask( EventBits_t value, RawTag ) noexcept : value_ { value } {}
+    EventBits_t value_ {};
+};
+
+template< typename Bit >
+struct WaitResult final
+{
+    EventMask< Bit > observed {};
+
+    [[nodiscard]] constexpr bool satisfied( EventMask< Bit > wanted,
+                                            WaitMode mode ) const noexcept
+    {
+        const EventBits_t matched = observed.raw() & wanted.raw();
+        return mode == WaitMode::all ? matched == wanted.raw() : matched != 0U;
+    }
+};
+
+struct StaticEventGroupStorage final
+{
+    StaticEventGroup_t control {};
+};
+
+template< typename Bit >
+class EventGroup final
+{
+    static_assert( std::is_enum< Bit >::value,
+                   "EventGroup requires an enum bit type" );
+
+public:
+    explicit EventGroup( StaticEventGroupStorage & storage ) noexcept
+        : handle_ { xEventGroupCreateStatic( &storage.control ) }
+    {
+    }
+
+    ~EventGroup() noexcept
+    {
+        if( handle_ != nullptr ) vEventGroupDelete( handle_ );
+    }
+
+    EventGroup( const EventGroup & ) = delete;
+    EventGroup & operator=( const EventGroup & ) = delete;
+    EventGroup( EventGroup && ) = delete;
+    EventGroup & operator=( EventGroup && ) = delete;
+
+    [[nodiscard]] bool valid() const noexcept { return handle_ != nullptr; }
+
+    [[nodiscard]] EventMask< Bit > set( EventMask< Bit > bits ) noexcept
+    {
+        return EventMask< Bit >::from_raw(
+            xEventGroupSetBits( handle_, bits.raw() ) );
+    }
+
+    [[nodiscard]] EventMask< Bit > clear( EventMask< Bit > bits ) noexcept
+    {
+        return EventMask< Bit >::from_raw(
+            xEventGroupClearBits( handle_, bits.raw() ) );
+    }
+
+    [[nodiscard]] EventMask< Bit > bits() const noexcept
+    {
+        return EventMask< Bit >::from_raw( xEventGroupGetBits( handle_ ) );
+    }
+
+    [[nodiscard]] WaitResult< Bit > wait( EventMask< Bit > wanted,
+                                          WaitMode mode,
+                                          ClearMode clear,
+                                          TickType_t timeout ) noexcept
+    {
+        const EventBits_t result = xEventGroupWaitBits(
+            handle_, wanted.raw(),
+            clear == ClearMode::clear_on_exit ? pdTRUE : pdFALSE,
+            mode == WaitMode::all ? pdTRUE : pdFALSE,
+            timeout );
+        return { EventMask< Bit >::from_raw( result ) };
+    }
+
+    [[nodiscard]] EventGroupHandle_t native_handle() const noexcept
+    {
+        return handle_;
+    }
+
+private:
+    EventGroupHandle_t handle_ {};
+};
+
+static_assert( !std::is_copy_constructible<
+               EventGroup< WaitMode > >::value );
+
+} // namespace freertos
+
+#endif
@@ -0,0 +1,15 @@
+#ifndef FREERTOS_RISC_V_CHIP_SPECIFIC_EXTENSIONS_H
+#define FREERTOS_RISC_V_CHIP_SPECIFIC_EXTENSIONS_H
+
+/* Hazard3 adds no architectural registers to the base RV32I context. */
+#define portasmHAS_MTIME                  1
+#define portasmHAS_SIFIVE_CLINT           0
+#define portasmADDITIONAL_CONTEXT_SIZE    0
+
+.macro portasmSAVE_ADDITIONAL_REGISTERS
+.endm
+
+.macro portasmRESTORE_ADDITIONAL_REGISTERS
+.endm
+
+#endif
@@ -0,0 +1,11 @@
+#ifndef LAB_FREESTANDING_STDLIB_H
+#define LAB_FREESTANDING_STDLIB_H
+
+/*
+ * The selected FreeRTOS sources include <stdlib.h> for standard types, but the
+ * configuration used by this card does not call hosted stdlib functions.
+ * GCC's freestanding headers provide size_t through <stddef.h>.
+ */
+#include <stddef.h>
+
+#endif
@@ -0,0 +1,17 @@
+#ifndef LAB_FREESTANDING_STRING_H
+#define LAB_FREESTANDING_STRING_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void * memcpy( void * destination, const void * source, size_t count );
+void * memset( void * destination, int value, size_t count );
+size_t strlen( const char * text );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif