pc386: Add Edison base support

The current support for the Edison supports a single polled
UART for input and output plus a simulated clock tick. The
activities forward for supporting the Edison have been posted
on the RTEMS mailing lists and at:

http://rtemsramblings.blogspot.com/2014/12/intel-edison-and-rtems-road-forward.html

1 files changed, 25 insertions, 2 deletions

diff --git a/c/src/lib/libbsp/i386/pc386/include/bsp.h b/c/src/lib/libbsp/i386/pc386/include/bsp.h
index db0879920c..f537eb693d 100644
--- a/c/src/lib/libbsp/i386/pc386/include/bsp.h
+++ b/c/src/lib/libbsp/i386/pc386/include/bsp.h
@@ -189,8 +189,31 @@ void rtems_irq_mngt_init(void);          /* from 'irq_init.c' */
 
 void bsp_size_memory(void);              /* from 'bspstart.c' */
 
-void Clock_driver_install_handler(void); /* from 'ckinit.c'  */
-void Clock_driver_support_initialize_hardware(void); /* from 'ckinit.c'  */
+#if (BSP_IS_EDISON == 0)
+  void Clock_driver_install_handler(void);             /* from 'ckinit.c'  */
+  void Clock_driver_support_initialize_hardware(void); /* from 'ckinit.c'  */
+#else
+  /**
+   *  @defgroup edison_bsp Clock Tick Support
+   *
+   *  @ingroup i386_pc386
+   *
+   *  @brief Clock Tick Support Package
+   */
+   Thread clock_driver_sim_idle_body(uintptr_t);
+   #define BSP_IDLE_TASK_BODY clock_driver_sim_idle_body
+  /*  
+   * hack to kill some time. Hopefully hitting a hardware register is slower
+   * than an empty loop.
+   */
+  #define BSP_CLOCK_DRIVER_DELAY() \
+    do { \
+      uint64_t _i = 2500000; \
+      while (_i) { \
+        _i--; \
+      } \
+    } while ( 0 )
+#endif /* edison */
 
 void kbd_reset_setup(char *str, int *ints);   /* from 'pc_keyb.c' */
 size_t read_aux(char * buffer, size_t count); /* from 'ps2_mouse.c'  */