Add Kinesis watchdog, ramfuncs, idle loop, start of clock configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3875 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 27 insertions, 4 deletions

diff --git a/nuttx/arch/arm/src/kinetis/kinetis_start.c b/nuttx/arch/arm/src/kinetis/kinetis_start.c
index eab678760..403424da2 100755
--- a/nuttx/arch/arm/src/kinetis/kinetis_start.c
+++ b/nuttx/arch/arm/src/kinetis/kinetis_start.c
@@ -99,6 +99,10 @@ void __start(void)
   const uint32_t *src;
   uint32_t *dest;
 
+  /* Disable the watchdog timer */
+
+  kinetis_wddisable();
+
   /* Configure the uart so that we can get debug output as soon as possible */
 
   kinetis_clockconfig();
@@ -127,22 +131,41 @@ void __start(void)
     }
   showprogress('C');
 
+  /* Copy any necessary code sections from FLASH to RAM.  The correct
+   * destination in SRAM is geive by _sramfuncs and _eramfuncs.  The
+   * temporary location is in flash after the data initalization code
+   * at _framfuncs
+   */
+
+#ifndef CONFIG_BOOT_RAMFUNCS
+  for (src = &_framfuncs, dest = &_sramfuncs; dest < &_eramfuncs; )
+    {
+      *dest++ = *src++;
+    }
+#endif
+  showprogress('E');
+ 
+
   /* Perform early serial initialization */
 
 #ifdef CONFIG_USE_EARLYSERIALINIT
   up_earlyserialinit();
 #endif
-  showprogress('D');
+  showprogress('F');
 
   /* Initialize onboard resources */
 
   kinetis_boardinitialize();
-  showprogress('E');
+  showprogress('G');
+  showprogress('\r');
+  showprogress('\n');
+
+  /* Show reset status */
+
+  dbg("Reset status: %02x:%02x\n", getreg8(KINETIS_SMC_SRSH), getreg8(KINETIS_SMC_SRSL));
 
   /* Then start NuttX */
 
-  showprogress('\r');
-  showprogress('\n');
   os_start();
 
   /* Shouldn't get here */