various changes

c/src/lib/libbsp/powerpc/qemuppc/ChangeLog

@@ -1,3 +1,19 @@
+2009-10-06	Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>
+	* Makefile.am:
+	do not use shared/timerstub
+
+	* include/bsp.h:
+	add macro to convert Decrementer value
+
+	* startup/bspstart.c:
+	set clock frequency to suitable value
+
+	* startup/bsppanic.c:
+	issue a reset after panic
+
+	* startup/linkcmds:
+	add space for stacks
+
 2009-10-03	Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>
 	* startup/bspstart.c:
 	add missing file

c/src/lib/libbsp/powerpc/qemuppc/Makefile.am

@@ -38,11 +38,10 @@ startup_SOURCES = ../../shared/bspclean.c ../../shared/bsplibc.c \
     ../../shared/gnatinstallhandler.c \
     startup/cmain.c startup/bspstart.c startup/bsppanic.c
 # pclock
-clock_SOURCES = ../../shared/clock_driver_simidle.c
+# clock_SOURCES = ../../shared/clock_driver_simidle.c
+clock_SOURCES = ../shared/clock/clock.c
 # console
 console_SOURCES = ../../shared/console-polled.c console/console-io.c
-#timer
-timer_SOURCES = ../../shared/timerstub.c
 
 # irq
 include_bsp_HEADERS = irq/irq.h \

c/src/lib/libbsp/powerpc/qemuppc/include/bsp.h

@@ -28,9 +28,18 @@ extern "C" {
 
 #define BSP_SMALL_MEMORY 1
 
+/*
+ *  Convert decrementer value to tenths of microseconds (used by shared timer
+ *  driver).
+ */
+#define BSP_Convert_decrementer( _value ) \
+  ((int) (((_value) * 10) / bsp_clicks_per_usec))
+
+#if 0
 /* support for simulated clock tick */
 Thread clock_driver_sim_idle_body(uintptr_t);
 #define BSP_IDLE_TASK_BODY clock_driver_sim_idle_body
+#endif
 
 #ifdef __cplusplus
 }

c/src/lib/libbsp/powerpc/qemuppc/startup/bsppanic.c

@@ -1,14 +1,20 @@
 #include <rtems.h>
 #include <rtems/bspIo.h>
 
+static void
+__outb(int port, unsigned char v)
+{
+  *((volatile unsigned char *)(0x80000000 + port)) = v;
+}
+
 void BSP_panic(char *s)
 {
   printk("%s PANIC %s\n",_RTEMS_version, s);
-  while(1){};
+  __outb (0x92, 0x01);
 }
 
 void _BSP_Fatal_error(unsigned int v)
 {
   printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
-  while(1){};
+  __outb (0x92, 0x01);
 }

c/src/lib/libbsp/powerpc/qemuppc/startup/bspstart.c

@@ -49,11 +49,6 @@ extern char bsp_interrupt_stack_end[];
 extern char bsp_interrupt_stack_size[];
 uint32_t BSP_mem_size = (uint32_t)RamSize;
 
-/*
- * Time base divisior (how many tick for 1 second).
- */
-unsigned int BSP_time_base_divisor;
-
 /* Default decrementer exception handler */
 static int default_decrementer_exception_handler( BSP_Exception_frame *frame, unsigned number)
 {
@@ -74,7 +69,6 @@ void bsp_start( void )
   uint32_t intrStackSize;
   int rv = 0;
   rtems_status_code sc;
-
   /*
    * Note we can not get CPU identification dynamically, so
    * force current_ppc_cpu.
@@ -83,10 +77,11 @@ void bsp_start( void )
 
   /*
    *  initialize the device driver parameters
+   * assume we are running with 20MHz bus 
+   * this should speed up some tests :-)
    */
-  /* BSP_bus_frequency        = (unsigned int)&PSIM_INSTRUCTIONS_PER_MICROSECOND; */
-  /* bsp_clicks_per_usec      = BSP_bus_frequency; */
-  /* BSP_time_base_divisor    = 1; */
+  BSP_bus_frequency        = 20;
+  bsp_clicks_per_usec      = BSP_bus_frequency;
 
   /*
    * Initialize the interrupt related settings.

c/src/lib/libbsp/powerpc/qemuppc/startup/cmain.c

@@ -1,5 +1,4 @@
 
-#if 1
 static void
 __outb(int port, unsigned char v)
 {
@@ -11,7 +10,6 @@ __inb(int port)
 {
   return *((volatile unsigned char *)(0x80000000 + port));
 }
-#endif
 
 static void
 __memcpy (unsigned char *d, unsigned char *s, int len)
@@ -43,12 +41,12 @@ void cmain (void)
    * init variable sections
    */
   __memcpy (__sdata2_start, __sdata2_load, __sdata2_end - __sdata2_start);
-  __memcpy (__sdata_start, __sdata_load, __sdata_end - __sdata_start);
-  __memcpy (__data_start, __data_load, __data_end - __data_start);
-  __bzero (__sbss2_start, __sbss2_end - __sbss2_start);
-  __bzero (__sbss_start, __sbss_end - __sbss_start);
-  __bzero (__bss_start, __bss_end - __bss_start);
-  printk( "hello #\n");
+  __memcpy (__sdata_start , __sdata_load , __sdata_end  - __sdata_start);
+  __memcpy (__data_start  , __data_load  , __data_end   - __data_start);
+  __bzero (__sbss2_start  , __sbss2_end - __sbss2_start);
+  __bzero (__sbss_start   , __sbss_end  - __sbss_start);
+  __bzero (__bss_start    , __bss_end   - __bss_start);
+  printk( "start of BSP\n");
   boot_card(0);
   printk( "end of BSP\n");
   __outb (0x92, 0x01);

c/src/lib/libbsp/powerpc/qemuppc/startup/linkcmds

@@ -84,7 +84,11 @@ SECTIONS
     __rodata_end = .;
   } >ROM =0
 
-  . = 0x1000;
+  .vectors :
+  {
+    . = . + 0x2000; /* skip vector area */
+  } >RAM
+
   __sdata2_load = __rodata_end;
   .sdata2 : AT (__sdata2_load)
   {
@@ -165,7 +169,8 @@ SECTIONS
   bsp_interrupt_stack_end = bsp_interrupt_stack_start + 32k;
   bsp_interrupt_stack_size = bsp_interrupt_stack_end - bsp_interrupt_stack_start;
 
-   WorkAreaBase = .;
+  bsp_work_area_start = bsp_interrupt_stack_end;
+  WorkAreaBase = bsp_work_area_start;
    . = RamBase + RamSize;
 
   .reset :