Add initialization for idle task.

arch/risc-v/src/common/up_initialize.c

@@ -49,6 +49,7 @@
 
 #include <arch/board/board.h>
 
+#include "sched/sched.h"
 #include "up_arch.h"
 #include "up_internal.h"
 
@@ -105,6 +106,8 @@ static inline void up_color_intstack(void)
 
 void up_initialize(void)
 {
+  FAR struct tcb_s *idle;
+
   /* Colorize the interrupt stack */
 
   up_color_intstack();
@@ -113,6 +116,13 @@ void up_initialize(void)
 
   up_addregion();
 
+  /* Initialize the idle task stack info */
+
+  idle = this_task(); /* It should be idle task */
+  idle->stack_alloc_ptr = _END_BSS;
+  idle->adj_stack_ptr   = (FAR void *)g_idle_topstack;
+  idle->adj_stack_size  = CONFIG_IDLETHREAD_STACKSIZE;
+
   /* Register devices */
 
 #if defined(CONFIG_DEV_NULL)

arch/risc-v/src/common/up_internal.h

@@ -77,6 +77,14 @@
 #define up_restorestate(regs) (g_current_regs = regs)
 #endif
 
+#define _START_TEXT  &_stext
+#define _END_TEXT    &_etext
+#define _START_BSS   &_sbss
+#define _END_BSS     &_ebss
+#define _DATA_INIT   &_eronly
+#define _START_DATA  &_sdata
+#define _END_DATA    &_edata
+
 /* Determine which (if any) console driver to use.  If a console is enabled
  * and no other console device is specified, then a serial console is
  * assumed.
@@ -112,6 +120,7 @@ extern "C"
 #define EXTERN extern
 #endif
 
+#ifndef __ASSEMBLY__
 #ifdef CONFIG_ARCH_RV64GC
 #ifdef CONFIG_SMP
 EXTERN volatile uint64_t *g_current_regs[CONFIG_SMP_NCPUS];
@@ -153,6 +162,8 @@ EXTERN uint32_t _edata;           /* End+1 of .data */
 EXTERN uint32_t _sbss;            /* Start of .bss */
 EXTERN uint32_t _ebss;            /* End+1 of .bss */
 
+#endif /* __ASSEMBLY__ */
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/