Patch from Charles-Antoine Gauthier <charles.gauthier@nrc.ca> after

feedback from Eric Norum <eric@skatter.usask.ca> on static and
dynamic RAM sizing issues while still having as much shared
code as possible across the m68k BSPs.

c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c

@@ -33,6 +33,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -53,6 +56,9 @@ void bsp_start( void )
   int             index;
   void           *vbr;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   monitors_vector_table = (m68k_isr_entry *)0;   /* Monitor Vectors are at 0 */
   m68k_set_vbr( monitors_vector_table );

c/src/lib/libbsp/m68k/efi332/startup/bspstart.c

@@ -32,6 +32,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -50,6 +53,9 @@ void bsp_start( void )
 {
   void           *vbr;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   /*
    *  we only use a hook to get the C library initialized.

c/src/lib/libbsp/m68k/efi68k/startup/bspstart.c

@@ -55,6 +55,9 @@ void bsp_start( void )
 {
   void           *vbr;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
 /*   set_debug_traps();    */
 /*   breakpoint(); */

c/src/lib/libbsp/m68k/gen68302/startup/bspstart.c

@@ -50,6 +50,9 @@ void bsp_pretasking_hook(void);               /* m68k version */
 void bsp_start( void )
 {
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   /*
    *  Allocate the memory for the RTEMS Work Space.  This can come from

c/src/lib/libbsp/m68k/gen68340/startup/bspstart.c

@@ -55,6 +55,9 @@ void bsp_pretasking_hook(void);               /* m68k version */
 void bsp_start( void )
 {
   extern void *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   /*
    *  Allocate the memory for the RTEMS Work Space.  This can come from

c/src/lib/libbsp/m68k/gen68360/start/start.S

@@ -392,7 +392,7 @@ ZEROLOOPTEST:
 	cmpl	a1,a0			| Done?
 	bcs.s	ZEROLOOP		| No, skip
 
-	movel	4(a7),_RamSize		| Set RAM size
+	movel	4(a7),_M68k_Ramsize	| Set RAM size
 
 	movel	#_stack_init,a7		| set master stack pointer
 	pea	env			| envp

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

@@ -28,12 +28,13 @@
 
 extern rtems_configuration_table Configuration;
 rtems_configuration_table  BSP_Configuration;
-unsigned long _RamSize;
-
 rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board. Dynamically set in start.S */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */

c/src/lib/libbsp/m68k/idp/startup/bspstart.c

@@ -40,6 +40,9 @@ rtems_cpu_table Cpu_table;
  
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -59,6 +62,9 @@ void bsp_start( void )
   m68k_isr_entry *monitors_vector_table;
   int             index;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   duart_base = (unsigned char *)DUART_ADDR;
 

c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c

@@ -34,6 +34,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -53,6 +56,9 @@ void bsp_start( void )
   m68k_isr_entry *monitors_vector_table;
   int             index;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
   m68k_set_vbr( monitors_vector_table );

c/src/lib/libbsp/m68k/mvme147/startup/bspstart.c

@@ -37,6 +37,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -56,6 +59,9 @@ void bsp_start( void )
   m68k_isr_entry *monitors_vector_table;
   int             index;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
   m68k_set_vbr( monitors_vector_table );

c/src/lib/libbsp/m68k/mvme147s/startup/bspstart.c

@@ -37,6 +37,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -57,6 +60,9 @@ void bsp_start( void )
   int             index;
   rtems_unsigned8 node_number;
   extern void    *_WorkspaceBase;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   monitors_vector_table = (m68k_isr_entry *)0;   /* 147Bug Vectors are at 0 */
   m68k_set_vbr( monitors_vector_table );

c/src/lib/libbsp/m68k/mvme162/startup/bspstart.c

@@ -41,6 +41,9 @@ rtems_cpu_table Cpu_table;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -60,6 +63,10 @@ void bsp_start( void )
   m68k_isr_entry *monitors_vector_table;
   int             index;
   extern void     *_WorkspaceBase;
+  extern void 	  *_RamSize;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
 
   /*
    *  162Bug Vectors are at 0xFFE00000

c/src/lib/libbsp/m68k/mvme167/startup/bspstart.c

@@ -41,6 +41,9 @@ rtems_extensions_table user_extension_table;
 
 rtems_cpu_table Cpu_table;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines.
  *  Look in rtems/c/src/lib/libbsp/shared/bsppost.c and
@@ -79,14 +82,18 @@ void bsp_pretasking_hook(void);               /* m68k version */
  */
 void bsp_start( void )
 {
+  void M68KFPSPInstallExceptionHandlers (void);
+  
   extern void *_WorkspaceBase;
   extern m68k_isr_entry M68Kvec[];
-  
+  extern void *_RamSize;
-  void M68KFPSPInstallExceptionHandlers (void);
+  extern unsigned long _M68k_Ramsize;
 
   m68k_isr_entry *rom_monitor_vector_table;
   int index;
 
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
+  
   /*
    *  167Bug Vectors are at 0xFFE00000
    */

c/src/lib/libbsp/m68k/ods68302/startup/bspstart.c

@@ -34,6 +34,9 @@ rtems_interrupt_level bsp_isr_level;
 
 char *rtems_progname;
 
+/* Amount of RAM on this board */
+unsigned long _M68k_Ramsize;
+
 /*
  *  Use the shared implementations of the following routines
  */
@@ -51,6 +54,10 @@ void bsp_pretasking_hook(void);               /* m68k version */
 void bsp_start( void )
 {
   extern void *_WorkspaceBase;
+  extern void *_RamSize;
+  extern unsigned long _M68k_Ramsize;
+
+  _M68k_Ramsize = (unsigned long)&_RamSize;		/* RAM size set in linker script */
   
 #if 0
   Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/;

c/src/lib/libbsp/m68k/shared/m68kpretaskinghook.c

@@ -34,7 +34,7 @@
 extern void bsp_libc_init( void *, unsigned long, int );
 extern rtems_configuration_table  BSP_Configuration;
 
-extern unsigned long  _RamSize;
+extern unsigned long  _M68k_Ramsize;
 extern void          *_RamBase;
 extern void          *_WorkspaceBase;
 extern void          *_HeapSize;
@@ -47,7 +47,7 @@ void bsp_pretasking_hook(void)
 
     heapStart =  (void *)
        ((unsigned long)&_WorkspaceBase + BSP_Configuration.work_space_size);
-    ramSpace = (unsigned long) &_RamBase + (unsigned long) &_RamSize - (unsigned long) heapStart;
+    ramSpace = (unsigned long) &_RamBase + _M68k_Ramsize - (unsigned long) heapStart;
 
     if (heapSize == 0)
         heapSize = ramSpace;