Changeset 996a9cb4 in rtems for c/src/lib/libbsp/m68k/gen68360/startup/init68360.c

Timestamp:

05/01/96 15:25:33 (28 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

bf6661e

Parents:

dce1c1a1

Message:

Updates from Eric Norum.

File:

• c/src/lib/libbsp/m68k/gen68360/startup/init68360.c (modified) (5 diffs)

c/src/lib/libbsp/m68k/gen68360/startup/init68360.c

@@ -1 +1 @@
 /*
- * Initialize 68360 hardware
+ * MC68360 support routines
  *
  * W. Eric Norum
@@ -13 +13 @@
 #include <rtems.h>
 #include <bsp.h>
-#include "m68360.h"
+#include <m68360.h>
 
-void
-_Init68360 (void)
+/*
+ * Send a command to the CPM RISC processer
+ */
+
+void M360ExecuteRISC(rtems_unsigned16 command)
+{
+        rtems_unsigned16 sr;
+
+        m68k_disable_interrupts (sr);
+        while (m360.cr & M360_CR_FLG)
+                continue;
+        m360.cr = command | M360_CR_FLG;
+        m68k_enable_interrupts (sr);
+}
+
+/*
+ * Initialize MC68360
+ */
+
+void _Init68360 (void)
 {
         int i;
         extern void *_RomBase, *_RamBase;
         m68k_isr_entry *vbr;
-        extern void _ClearBSSAndStart (void);
+        extern void _CopyDataClearBSSAndStart (void);
 
         /*
@@ -65 +83 @@
                 *((long *)((char *)&m360 + 0xF00 + i)) = 0;
         }
-        m360.cr = M360_CR_RST | M360_CR_FLG;
+        M360ExecuteRISC (M360_CR_RST);
 
         /*
@@ -130 +148 @@
          * Step 13: Copy  the exception vector table to system RAM
          */
-  
-  m68k_get_vbr( vbr );
+        m68k_get_vbr (vbr);
         for (i = 0; i < 256; ++i)
                 M68Kvec[i] = vbr[i];
-  m68k_set_vbr( M68Kvec );
+        m68k_set_vbr (M68Kvec);
         
         /*
@@ -168 +185 @@
 
         /*
-         * Clear BSS, switch stacks and call main()
+         * Copy data, clear BSS, switch stacks and call main()
          */
-        _ClearBSSAndStart ();
+        _CopyDataClearBSSAndStart ();
 }