2004-11-22 Jennifer Averett <jennifer@OARcorp.com>

	PR 581/bsps
	* Makefile.am, bsp_specs, configure.ac, include/bsp.h, include/tm27.h,
	start/start.S, startup/bspstart.c, startup/linkcmds,
	tools/Makefile.am, tools/psim, vectors/vectors.S, wrapup/Makefile.am:
	Convert PSIM to new exception model.
	* irq/irq.c, irq/irq.h, irq/irq_asm.S, irq/irq_init.c: New files.
	* startup/setvec.c, timer/timer.c: Removed.

1 files changed, 168 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/psim/irq/irq_init.c b/c/src/lib/libbsp/powerpc/psim/irq/irq_init.c
new file mode 100644
index 0000000000..7ecc827bec
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/psim/irq/irq_init.c
@@ -0,0 +1,168 @@
+/* irq_init.c
+ *
+ *  This file contains the implementation of rtems initialization
+ *  related to interrupt handling.
+ *
+ *  CopyRight (C) 1999 valette@crf.canon.fr
+ *
+ * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>
+ * to make it valid for MVME2300 Motorola boards.
+ *
+ * Till Straumann <strauman@slac.stanford.edu>, 12/20/2001:
+ * Use the new interface to openpic_init
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  irq_init.c,v 1.6.2.5 2003/09/04 18:45:20 joel Exp
+ */
+
+#include <libcpu/io.h>
+#include <libcpu/spr.h>
+#include <bsp/irq.h>
+#include <bsp.h>
+#include <libcpu/raw_exception.h>
+#include <rtems/bspIo.h>
+#if 0
+#include <bsp/pci.h>
+#include <bsp/residual.h>
+#include <bsp/openpic.h>
+#include <bsp/motorola.h>
+#endif
+
+
+/*
+#define SHOW_ISA_PCI_BRIDGE_SETTINGS
+*/
+
+typedef struct {
+  unsigned char bus;	/* few chance the PCI/ISA bridge is not on first bus but ... */
+  unsigned char device;
+  unsigned char function;
+} pci_isa_bridge_device;
+
+pci_isa_bridge_device* via_82c586 = 0;
+
+extern unsigned int external_exception_vector_prolog_code_size[];
+extern void external_exception_vector_prolog_code();
+extern unsigned int decrementer_exception_vector_prolog_code_size[];
+extern void decrementer_exception_vector_prolog_code();
+
+/*
+ * default on/off function
+ */
+static void nop_func(){}
+/*
+ * default isOn function
+ */
+static int not_connected() {return 0;}
+/*
+ * default possible isOn function
+ */
+static int connected() {return 1;}
+
+static rtems_irq_connect_data     	rtemsIrq[BSP_IRQ_NUMBER];
+static rtems_irq_global_settings     	initial_config;
+static rtems_irq_connect_data     	defaultIrq = {
+  /* vectorIdex,	 hdl		, on		, off		, isOn */
+  0, 			 nop_func	, nop_func	, nop_func	, not_connected
+};
+static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={
+  /*
+   * actual rpiorities for interrupt :
+   *	0   means that only current interrupt is masked
+   *	255 means all other interrupts are masked
+   */
+  /*
+   * ISA interrupts.
+   * The second entry has a priority of 255 because
+   * it is the slave pic entry and is should always remain
+   * unmasked.
+   */
+  0,0,
+  255,
+  0, 0, 0, 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+  /*
+   * PCI Interrupts
+   */
+  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, /* for raven prio 0 means unactive... */
+  /*
+   * Processor exceptions handled as interrupts
+   */
+  0
+};
+
+void VIA_isa_bridge_interrupts_setup(void)
+{
+  printk("VIA_isa_bridge_interrupts_setup - Shouldn't get here!\n");
+  return;
+}
+
+  /*
+   * This code assumes the exceptions management setup has already
+   * been done. We just need to replace the exceptions that will
+   * be handled like interrupt. On mcp750/mpc750 and many PPC processors
+   * this means the decrementer exception and the external exception.
+   */
+void BSP_rtems_irq_mng_init(unsigned cpuId)
+{
+  rtems_raw_except_connect_data vectorDesc;
+  int i;
+  
+  /*
+   * First initialize the Interrupt management hardware
+   */
+
+  /*
+   * Initialize Rtems management interrupt table
+   */
+    /*
+     * re-init the rtemsIrq table
+     */
+    for (i = 0; i < BSP_IRQ_NUMBER; i++) {
+      rtemsIrq[i]      = defaultIrq;
+      rtemsIrq[i].name = i;
+    }
+    /*
+     * Init initial Interrupt management config
+     */
+    initial_config.irqNb 	= BSP_IRQ_NUMBER;
+    initial_config.defaultEntry = defaultIrq;
+    initial_config.irqHdlTbl	= rtemsIrq;
+    initial_config.irqBase	= BSP_ASM_IRQ_VECTOR_BASE;
+    initial_config.irqPrioTbl	= irqPrioTable;
+
+    if (!BSP_rtems_irq_mngt_set(&initial_config)) {
+      /*
+       * put something here that will show the failure...
+       */
+      BSP_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n");
+    }
+  
+  /*
+   * We must connect the raw irq handler for the two
+   * expected interrupt sources : decrementer and external interrupts.
+   */
+    vectorDesc.exceptIndex 	=	ASM_DEC_VECTOR;
+    vectorDesc.hdl.vector	=	ASM_DEC_VECTOR;
+    vectorDesc.hdl.raw_hdl	=	decrementer_exception_vector_prolog_code;
+    vectorDesc.hdl.raw_hdl_size	=	(unsigned) decrementer_exception_vector_prolog_code_size;
+    vectorDesc.on		=	nop_func;
+    vectorDesc.off		=	nop_func;
+    vectorDesc.isOn		=	connected;
+    if (!mpc60x_set_exception (&vectorDesc)) {
+      BSP_panic("Unable to initialize RTEMS decrementer raw exception\n");
+    }
+    vectorDesc.exceptIndex	=	ASM_EXT_VECTOR;
+    vectorDesc.hdl.vector	=	ASM_EXT_VECTOR;
+    vectorDesc.hdl.raw_hdl	=	external_exception_vector_prolog_code;
+    vectorDesc.hdl.raw_hdl_size	=	(unsigned) external_exception_vector_prolog_code_size;
+    if (!mpc60x_set_exception (&vectorDesc)) {
+      BSP_panic("Unable to initialize RTEMS external raw exception\n");
+    }
+#ifdef TRACE_IRQ_INIT  
+    printk("RTEMS IRQ management is now operationnal\n");
+#endif
+}
+