1 files changed, 121 insertions, 0 deletions
diff --git a/bsps/powerpc/qemuppc/start/bspstart.c b/bsps/powerpc/qemuppc/start/bspstart.c
new file mode 100644
index 0000000000..94d7f4b84d
--- /dev/null
+++ b/bsps/powerpc/qemuppc/start/bspstart.c
@@ -0,0 +1,121 @@
+/*
+ *  This set of routines starts the application.  It includes application,
+ *  board, and monitor specific initialization and configuration.
+ *  The generic CPU dependent initialization has been performed
+ *  before any of these are invoked.
+ *
+ *  COPYRIGHT (c) 1989-2008.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#include <string.h>
+#include <fcntl.h>
+
+#include <rtems/counter.h>
+
+#include <libcpu/bat.h>
+#include <libcpu/spr.h>
+#include <libcpu/powerpc-utility.h>
+
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <bsp/vectors.h>
+#include <bsp/bootcard.h>
+#include <bsp/irq-generic.h>
+
+/*
+ * CPU Bus Frequency
+ */
+unsigned int BSP_bus_frequency;
+
+/* Configuration parameter for clock driver */
+uint32_t bsp_time_base_frequency;
+
+/* Legacy */
+uint32_t bsp_clicks_per_usec;
+
+/*
+ * Memory on this board.
+ */
+extern char RamSize[];
+extern char bsp_interrupt_stack_start[];
+extern char bsp_interrupt_stack_end[];
+uint32_t BSP_mem_size = (uint32_t)RamSize;
+
+/* Default decrementer exception handler */
+static int default_decrementer_exception_handler( BSP_Exception_frame *frame, unsigned number)
+{
+  ppc_set_decrementer_register(UINT32_MAX);
+
+  return 0;
+}
+
+/*
+ *  bsp_start
+ *
+ *  This routine does the bulk of the system initialization.
+ */
+
+void bsp_start( void )
+{
+  rtems_status_code sc = RTEMS_SUCCESSFUL;
+  uintptr_t intrStackStart;
+  uintptr_t intrStackSize;
+
+  /*
+   * Note we can not get CPU identification dynamically, so
+   * force current_ppc_cpu.
+   */
+  current_ppc_cpu = PPC_PSIM;
+
+  /*
+   *  initialize the device driver parameters
+   * assume we are running with 20MHz bus
+   * this should speed up some tests :-)
+   */
+  BSP_bus_frequency        = 20;
+  bsp_time_base_frequency  = 20000000;
+  bsp_clicks_per_usec      = BSP_bus_frequency;
+  rtems_counter_initialize_converter(bsp_time_base_frequency);
+
+  /*
+   * Initialize the interrupt related settings.
+   */
+  intrStackStart = (uintptr_t) bsp_interrupt_stack_start;
+  intrStackSize =  (uintptr_t) bsp_interrupt_stack_end - intrStackStart;
+
+  BSP_mem_size = (uint32_t )RamSize;
+
+  /*
+   * Initialize default raw exception handlers.
+   */
+  ppc_exc_initialize(intrStackStart, intrStackSize);
+
+  /* Install default handler for the decrementer exception */
+  sc = ppc_exc_set_handler( ASM_DEC_VECTOR, default_decrementer_exception_handler);
+  if (sc != RTEMS_SUCCESSFUL) {
+    rtems_panic("cannot install decrementer exception handler");
+  }
+
+  /* Initalize interrupt support */
+  bsp_interrupt_initialize();
+
+#if 0
+  /*
+   * Setup BATs and enable MMU
+   */
+  /* Memory */
+  setdbat(0, 0x0<<24, 0x0<<24, 2<<24, _PAGE_RW);
+  setibat(0, 0x0<<24, 0x0<<24, 2<<24,        0);
+  /* PCI    */
+  setdbat(1, 0x8<<24, 0x8<<24, 1<<24,  IO_PAGE);
+  setdbat(2, 0xc<<24, 0xc<<24, 1<<24,  IO_PAGE);
+
+  _write_MSR(_read_MSR() | MSR_DR | MSR_IR);
+  __asm__ volatile("sync; isync");
+#endif
+}