Add starting point for IGLOO2 RISV-V demo project.

FreeRTOS/Demo/RISC-V_IGLOO2_Creative_SoftConsole/riscv_hal/init.c

@@ -0,0 +1,80 @@
+/*******************************************************************************
+ * (c) Copyright 2016-2018 Microsemi SoC Products Group.  All rights reserved.
+ *
+ * @file init.c
+ * @author Microsemi SoC Products Group
+ * @brief Mi-V soft processor memory section initializations and start-up code.
+ *
+ * SVN $Revision: 9661 $
+ * SVN $Date: 2018-01-15 16:13:33 +0530 (Mon, 15 Jan 2018) $
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "encoding.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern uint32_t     __sdata_load;
+extern uint32_t     __sdata_start;
+extern uint32_t     __sdata_end;
+
+extern uint32_t     __data_load;
+extern uint32_t     __data_start;
+extern uint32_t     __data_end;
+
+extern uint32_t     __sbss_start;
+extern uint32_t     __sbss_end;
+extern uint32_t     __bss_start;
+extern uint32_t     __bss_end;
+
+
+static void copy_section(uint32_t * p_load, uint32_t * p_vma, uint32_t * p_vma_end)
+{
+    while(p_vma <= p_vma_end)
+    {
+        *p_vma = *p_load;
+        ++p_load;
+        ++p_vma;
+    }
+}
+
+static void zero_section(uint32_t * start, uint32_t * end)
+{
+    uint32_t * p_zero = start;
+    
+    while(p_zero <= end)
+    {
+        *p_zero = 0;
+        ++p_zero;
+    }
+}
+
+void _init(void)
+{
+    extern int main(int, char**);
+    const char *argv0 = "hello";
+    char *argv[] = {(char *)argv0, NULL, NULL};
+
+    copy_section(&__sdata_load, &__sdata_start, &__sdata_end);
+    copy_section(&__data_load, &__data_start, &__data_end);
+    zero_section(&__sbss_start, &__sbss_end);
+    zero_section(&__bss_start, &__bss_end);
+    
+    main(1, argv);
+}
+
+/* Function called after main() finishes */
+void
+_fini()
+{
+}
+
+#ifdef __cplusplus
+}
+#endif
+