git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@455 35acf78f-673a-0410-8e92-d51de3d6d3f4

demos/ARM7-AT91SAM7X-GCC/board.c

@@ -54,11 +54,11 @@ static void SYSIrqHandler(void) {
 }
 
 /*
- * Board initialization code.
+ * Early initialization code.
+ * This initialization is performed just after reset before BSS and DATA
+ * segments initialization.
  */
-void hwinit(void) {
-  int i;
-
+void hwinit0(void) {
   /*
    * Flash Memory: 1 wait state, about 50 cycles in a microsecond.
    */
@@ -99,6 +99,15 @@ void hwinit(void) {
   AT91C_BASE_PMC->PMC_PCER   = (1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOB);
   AT91C_BASE_PIOA->PIO_PER   = 0xFFFFFFFF;
   AT91C_BASE_PIOB->PIO_PER   = 0xFFFFFFFF;
+}
+
+/*
+ * Late initialization code.
+ * This initialization is performed after BSS and DATA segments initialization
+ * and before invoking the main() function.
+ */
+void hwinit1(void) {
+  int i;
 
   /*
    * Default AIC setup, the device drivers will modify it as needed.
@@ -150,4 +159,9 @@ void hwinit(void) {
   AT91C_BASE_PIOA->PIO_PDR   = AT91C_PA3_RTS0 | AT91C_PA4_CTS0;
   AT91C_BASE_PIOA->PIO_ASR   = AT91C_PIO_PA3 | AT91C_PIO_PA4;
   AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA3 | AT91C_PIO_PA4;
+
+  /*
+   * ChibiOS/RT initialization.
+   */
+  chSysInit();
 }

demos/ARM7-AT91SAM7X-GCC/main.c

@@ -36,18 +36,20 @@ static msg_t Thread1(void *arg) {
 }
 
 /*
- * Entry point, the interrupts are disabled on entry.
+ * Entry point, note, the main() function is already a thread in the system
+ * on entry.
  */
 int main(int argc, char **argv) {
 
-  /*
-   * The main() function becomes a thread here then the interrupts are
-   * enabled and ChibiOS/RT goes live.
-   */
-  chSysInit();
 
+  /*
+   * Creates the blinker thread.
+   */
   chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
 
+  /*
+   * Normal main() thread activity.
+   */
   while (TRUE) {
     chThdSleep(500);
     if (!(AT91C_BASE_PIOB->PIO_PDSR & PIOB_SW1))