feat: publish FreeRTOS C FC08 card

2026-07-19 16:36:03 +02:00
commit 2e82515c3b
199 changed files with 59703 additions and 0 deletions
@@ -0,0 +1,65 @@
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+#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                  16
+#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          0
+#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                        1
+#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                  0
+#define INCLUDE_vTaskDelete                      1
+#define INCLUDE_vTaskSuspend                     0
+#define INCLUDE_eTaskGetState                    1
+#define INCLUDE_uxTaskPriorityGet                1
+#define INCLUDE_vTaskPrioritySet                 0
+#define INCLUDE_xTaskGetSchedulerState           1
+#define INCLUDE_uxTaskGetStackHighWaterMark      1
+#define INCLUDE_xSemaphoreGetMutexHolder         1
+
+#define configENABLE_FPU                         0
+#define configENABLE_VPU                         0
+#define configISR_STACK_SIZE_WORDS               128
+
+#ifndef __ASSEMBLER__
+void lab_assert_fail( const char * file, int line );
+#define configASSERT( condition ) \
+    do { if( !( condition ) ) { lab_assert_fail( __FILE__, __LINE__ ); } } while( 0 )
+#else
+#define configASSERT( condition )
+#endif
+
+#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
@@ -0,0 +1,56 @@
+#ifndef TASK01_MUTEX_H
+#define TASK01_MUTEX_H
+
+#include <stdint.h>
+
+#include "FreeRTOS.h"
+#include "semphr.h"
+#include "task.h"
+#include "task01_mutex_model.h"
+
+#define FC08_TASK_STACK_WORDS       256U
+#define FC08_LOW_PRIORITY           1U
+#define FC08_MEDIUM_PRIORITY        2U
+#define FC08_HIGH_PRIORITY          3U
+#define FC08_VERIFIER_PRIORITY      0U
+#define FC08_EVENT_CAPACITY         12U
+#define FC08_TIMEOUT_TICKS          20U
+
+typedef struct MutexExperiment
+{
+    SemaphoreHandle_t mutex;
+    TaskHandle_t low_handle;
+    TaskHandle_t medium_handle;
+    TaskHandle_t high_handle;
+    TaskHandle_t verifier_handle;
+    UBaseType_t inherited_priority;
+    UBaseType_t restored_priority;
+    TaskHandle_t holder_while_contended;
+    eTaskState medium_state_while_inherited;
+    uintptr_t low_sp;
+    uintptr_t high_sp;
+    uintptr_t medium_sp;
+    uint32_t protected_value;
+    uint32_t medium_started;
+    uint32_t medium_started_while_inherited;
+    uint32_t high_acquired;
+    uint32_t low_done;
+    uint32_t high_done;
+    uint32_t medium_done;
+    uint32_t pass;
+    uint32_t evidence_digest;
+} MutexExperiment;
+
+extern MutexExperiment g_fc08;
+extern MutexEvidence g_fc08_events[ FC08_EVENT_CAPACITY ];
+extern volatile uint32_t g_fc08_event_count;
+extern volatile uint32_t g_fc08_last_checkpoint;
+extern volatile uint32_t g_fc08_pass;
+
+void fc08_checkpoint_committed( uint32_t point, const void * subject );
+void fc08_low_entry( void * context );
+void fc08_medium_entry( void * context );
+void fc08_high_entry( void * context );
+void fc08_verifier_entry( void * context );
+
+#endif
@@ -0,0 +1,54 @@
+#ifndef TASK01_MUTEX_MODEL_H
+#define TASK01_MUTEX_MODEL_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct MutexEvidence
+{
+    uint32_t sequence;
+    uint32_t event;
+    uint32_t tick;
+    uint32_t actor;
+    uint32_t value;
+    uint32_t committed;
+} MutexEvidence;
+
+static inline uint32_t fc08_digest( const MutexEvidence * events,
+                                    size_t count )
+{
+    uint32_t hash = 2166136261U;
+    size_t index;
+
+    for( index = 0U; index < count; ++index )
+    {
+        hash = ( hash ^ events[ index ].event ) * 16777619U;
+        hash = ( hash ^ events[ index ].actor ) * 16777619U;
+        hash = ( hash ^ events[ index ].value ) * 16777619U;
+        hash = ( hash ^ events[ index ].committed ) * 16777619U;
+    }
+    return hash;
+}
+
+static inline int fc08_order_is_valid( const MutexEvidence * events,
+                                       size_t count )
+{
+    size_t index;
+
+    if( events == NULL || count != 10U )
+    {
+        return 0;
+    }
+    for( index = 0U; index < count; ++index )
+    {
+        if( events[ index ].sequence != index + 1U ||
+            events[ index ].event != index + 1U ||
+            events[ index ].committed != ( 0xFC080000U | ( index + 1U ) ) )
+        {
+            return 0;
+        }
+    }
+    return 1;
+}
+
+#endif