added virtex BSP support and some missing files for common PPC

exception handling

1 files changed, 277 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c
new file mode 100644
index 0000000000..700ac0c812
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c
@@ -0,0 +1,277 @@
+/*  bsp_start()
+ *
+ *  This routine starts the application.  It includes application,
+ *  board, and monitor specific initialization and configuration.
+ *  The generic CPU dependent initialization has been performed
+ *  before this routine is invoked.
+ *
+ *  INPUT:  NONE
+ *
+ *  OUTPUT: NONE
+ *
+ *  Author:	Thomas Doerfler <td@imd.m.isar.de>
+ *              IMD Ingenieurbuero fuer Microcomputertechnik
+ *
+ *  COPYRIGHT (c) 1998 by IMD
+ *
+ *  Changes from IMD are covered by the original distributions terms.
+ *  This file has been derived from the papyrus BSP:
+ *
+ *  Author:	Andrew Bray <andy@i-cubed.co.uk>
+ *
+ *  COPYRIGHT (c) 1995 by i-cubed ltd.
+ *
+ *  To anyone who acknowledges that this file is provided "AS IS"
+ *  without any express or implied warranty:
+ *      permission to use, copy, modify, and distribute this file
+ *      for any purpose is hereby granted without fee, provided that
+ *      the above copyright notice and this notice appears in all
+ *      copies, and that the name of i-cubed limited not be used in
+ *      advertising or publicity pertaining to distribution of the
+ *      software without specific, written prior permission.
+ *      i-cubed limited makes no representations about the suitability
+ *      of this software for any purpose.
+ *
+ *  Modifications for spooling console driver and control of memory layout
+ *  with linker command file by
+ *              Thomas Doerfler <td@imd.m.isar.de>
+ *  for these modifications:
+ *  COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.
+ *
+ *  To anyone who acknowledges that this file is provided "AS IS"
+ *  without any express or implied warranty:
+ *      permission to use, copy, modify, and distribute this file
+ *      for any purpose is hereby granted without fee, provided that
+ *      the above copyright notice and this notice appears in all
+ *      copies. IMD makes no representations about the suitability
+ *      of this software for any purpose.
+ *
+ *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  Modifications for PPC405GP by Dennis Ehlin
+ *
+ *  $Id$
+ */
+#include <string.h>
+#include <fcntl.h>
+
+#include <bsp.h>
+#include <rtems/libio.h>
+#include <rtems/libcsupport.h>
+#include <bsp/irq.h>
+#include <rtems/bspIo.h>
+#include <libcpu/cpuIdent.h>
+#include <libcpu/spr.h>
+#include <rtems/powerpc/powerpc.h>
+
+SPR_RW(SPRG0)
+SPR_RW(SPRG1)
+
+#include RTEMS_XPARAMETERS_H
+#include <stdio.h>
+
+/*
+ *  The original table from the application and our copy of it with
+ *  some changes.
+ */
+
+extern rtems_configuration_table Configuration;
+
+rtems_configuration_table  BSP_Configuration;
+
+rtems_cpu_table Cpu_table;
+
+char *rtems_progname;
+
+uint32_t _heap_start;
+uint32_t _heap_end;
+uint32_t _top_of_ram;
+
+
+/*      Initialize whatever libc we are using
+ *      called from postdriver hook
+ */
+
+void bsp_XAssertHandler(const char* file, int line);
+void bsp_postdriver_hook(void);
+void bsp_libc_init( void *, uint32_t, int );
+
+
+void bsp_XAssertHandler(const char* file, int line) {
+  printf("\n***\n*** XAssert Failed!  File: %s, Line: %d\n***\n", file, line);
+}
+
+/*
+ *
+ *  bsp_predriver_hook
+ *
+ *  Before drivers are setup.
+ */
+
+void bsp_predriver_hook(void)
+{
+  
+}
+
+/*
+ *  Function:   bsp_pretasking_hook
+ *  Created:    95/03/10
+ *
+ *  Description:
+ *      BSP pretasking hook.  Called just before drivers are initialized.
+ *      Used to setup libc and install any BSP extensions.
+ *
+ *  NOTES:
+ *      Must not use libc (to do io) from here, since drivers are
+ *      not yet initialized.
+ *
+ */
+
+void bsp_pretasking_hook(void)
+{
+
+
+    uint32_t        heap_start;
+    uint32_t  	    heap_size;
+    uint32_t  	    heap_end;
+
+    /* round up from the top of workspace to next 64k boundary, get
+     * default heapsize from linker script  */
+    heap_start = (((uint32_t)BSP_Configuration.work_space_start +
+		   BSP_Configuration.work_space_size) + 0x18000) & 0xffff0000;
+
+    heap_end = _heap_start + (uint32_t)&_HeapSize;
+
+    heap_size = (heap_end - heap_start);
+
+    _heap_start = heap_start;
+    _heap_end = heap_end;
+
+    _top_of_ram = heap_end;
+
+    bsp_libc_init((void *) heap_start, heap_size, 0); /* 64 * 1024 */
+
+/*
+  XAssertSetCallback((XAssertCallback*)bsp_XAssertHandler);
+*/
+
+#ifdef RTEMS_DEBUG
+    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
+#endif
+}
+
+/*
+ *  bsp_start
+ *
+ *  This routine does the bulk of the system initialization.
+ */
+
+
+void bsp_start( void )
+{
+  extern unsigned long *intrStackPtr;
+  register unsigned char* intrStack;
+  ppc_cpu_id_t myCpu;
+  ppc_cpu_revision_t myCpuRevision;
+
+  /*
+   * Get CPU identification dynamically. Note that the get_ppc_cpu_type() 
+   * function store the result in global variables 
+   * so that it can be used latter...
+   */
+  myCpu 	    = get_ppc_cpu_type();
+  myCpuRevision = get_ppc_cpu_revision();
+  /*
+   *  initialize the CPU table for this BSP
+   * NOTE: this must be before the exception initialization,
+   * because exception code useses some information from Cpu_table
+   */
+
+  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
+  Cpu_table.predriver_hook  = bsp_predriver_hook;
+  Cpu_table.postdriver_hook = bsp_postdriver_hook;
+  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
+
+  /* timebase register ticks/microsecond */
+  Cpu_table.clicks_per_usec = (250000000 / 1000000);
+
+  Cpu_table.serial_per_sec = 14625000; /* = (CPU Clock / UART Internal Clock Divisor) */
+  Cpu_table.serial_external_clock = 0;
+  Cpu_table.timer_internal_clock  = 1;
+  Cpu_table.serial_xon_xoff = 0;
+  Cpu_table.serial_cts_rts = 0;
+  Cpu_table.serial_rate = 115200;
+  Cpu_table.timer_average_overhead = 2;
+  Cpu_table.timer_least_valid = 3;
+  Cpu_table.exceptions_in_RAM = TRUE;
+
+  /*
+   * Initialize some SPRG registers related to irq handling
+   */
+
+  intrStack = (((unsigned char*)&intrStackPtr) - PPC_MINIMUM_STACK_FRAME_SIZE);
+  _write_SPRG1((unsigned int)intrStack);
+  /* signal them that we have fixed PR288 - eventually, this should go away */
+  _write_SPRG0(PPC_BSP_HAS_FIXED_PR288);
+
+
+  /*
+   * Initialize default raw exception handlers. 
+   * See shared/vectors/vectors_init.c
+   */
+  initialize_exceptions();
+
+  /*
+   * Install our own set of exception vectors
+   */
+  BSP_rtems_irq_mng_init(0);
+
+  /*
+   *  Allocate the memory for the RTEMS Work Space.  This can come from
+   *  a variety of places: hard coded address, malloc'ed from outside
+   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
+   *  typically done by stock BSPs) by subtracting the required amount
+   *  of work space from the last physical address on the CPU board.
+   */
+
+  /*
+   *  Need to "allocate" the memory for the RTEMS Workspace and
+   *  tell the RTEMS configuration where it is.  This memory is
+   *  not malloc'ed.  It is just "pulled from the air".
+   */
+  /* FIME: plan usage of RAM better:
+     - make top of ram dynamic,
+     - make rest of ram to heap...
+     -remove RAM_END from bsp.h, this cannot be valid...
+      or must be a function call
+   */
+  {
+    extern int _end;
+
+    /* round _end up to next 64k boundary for start of workspace */
+    BSP_Configuration.work_space_start = (void *)((((uint32_t)&_end) + 0x18000) & 0xffff0000);
+  }
+
+}
+
+void BSP_ask_for_reset(void)
+{
+  printk("system stopped, press RESET");
+  while(1) {};
+}
+
+void BSP_panic(char *s)
+{
+  printk("%s PANIC %s\n",_RTEMS_version, s);
+  BSP_ask_for_reset();
+}
+
+void _BSP_Fatal_error(unsigned int v)
+{
+  printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
+  BSP_ask_for_reset();
+}
+