* Makefile.am, irq/irq_config.h, irq/irq_init.c, irq/irq.h:

add basic IRQ support (for decrementer)

        * start/start.S, startup/cmain.c, startup/linkcmds: add support
        for sdata* sections

        * startup/bsppanic.c: some cleanup

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

@@ -1,3 +1,12 @@
+2009-10-02	Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>
+	* Makefile.am, irq/irq_config.h, irq/irq_init.c, irq/irq.h:
+	add basic IRQ support (for decrementer)
+
+	* start/start.S, startup/cmain.c, startup/linkcmds: add support
+	for sdata* sections
+
+	* startup/bsppanic.c: some cleanup
+
 2009-09-30	Joel Sherrill <joel.sherrill@oarcorp.com>
 
 	* include/bsp.h: BSP does not have much memory. Limited to BIOS space.

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

@@ -13,7 +13,6 @@ dist_project_lib_DATA = bsp_specs
 
 include_HEADERS = include/bsp.h
 include_HEADERS += ../../shared/include/tm27.h
-include_bsp_HEADERS = irq/irq.h
 
 nodist_include_HEADERS = include/bspopts.h
 nodist_include_bsp_HEADERS = ../../shared/include/bootcard.h
@@ -31,21 +30,38 @@ project_lib_DATA += rtems_crti.$(OBJEXT)
 
 dist_project_lib_DATA += startup/linkcmds
 
+# startup
 startup_SOURCES = ../../shared/bspclean.c ../../shared/bsplibc.c \
     ../../shared/bsppredriverhook.c ../../shared/bsppretaskinghook.c \
     ../../shared/bspgetworkarea.c ../../shared/bsppost.c \
-    ../../shared/bspstart.c ../../shared/bootcard.c ../../shared/sbrk.c \
+    ../../shared/bootcard.c ../../shared/sbrk.c \
     ../../shared/gnatinstallhandler.c \
-    startup/cmain.c startup/bsppanic.c
+    startup/cmain.c startup/bspstart.c startup/bsppanic.c
+# pclock
 clock_SOURCES = ../../shared/clock_driver_simidle.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 \
+    ../../shared/include/irq-generic.h \
+    irq/irq-config.h
+
+irq_SOURCES = irq/irq_init.c \
+	../../shared/src/irq-generic.c \
+	../../shared/src/irq-legacy.c
+
 noinst_LIBRARIES += libbsp.a
 libbsp_a_SOURCES = $(startup_SOURCES) $(clock_SOURCES) $(console_SOURCES) \
-    $(timer_SOURCES)
+    $(timer_SOURCES) $(irq_SOURCES)
 
 #    ../../../libcpu/@RTEMS_CPU@/mpc6xx/clock.rel
+include_bsp_HEADERS +=  ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/vectors.h	\
+                       ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/irq_supp.h	\
+                       ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/ppc_exc_bspsupp.h
+
 
 libbsp_a_LIBADD = ../../../libcpu/@RTEMS_CPU@/shared/cpuIdent.rel \
     ../../../libcpu/@RTEMS_CPU@/shared/stack.rel \

c/src/lib/libbsp/powerpc/qemuppc/irq/irq-config.h

@@ -0,0 +1,78 @@
+/**
+ * @file
+ *
+ * @ingroup bsp_interrupt
+ *
+ * @brief BSP interrupt support configuration.
+ */
+
+/*
+ * Copyright (c) 2008
+ * Embedded Brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * rtems@embedded-brains.de
+ *
+ * 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.
+ */
+
+#ifndef LIBBSP_POWERPC_QEMUPPC_IRQ_CONFIG_H
+#define LIBBSP_POWERPC_QEMUPPC_IRQ_CONFIG_H
+
+#include <stdint.h>
+
+#include <bsp/irq.h>
+
+/**
+ * @addtogroup bsp_interrupt
+ *
+ * @{
+ */
+
+/**
+ * @brief Minimum vector number.
+ */
+#define BSP_INTERRUPT_VECTOR_MIN BSP_LOWEST_OFFSET
+
+/**
+ * @brief Maximum vector number.
+ */
+#define BSP_INTERRUPT_VECTOR_MAX BSP_MAX_OFFSET
+
+/**
+ * @brief Enables the index table.
+ *
+ * If you enable the index table, you have to define a size for the handler
+ * table (@ref BSP_INTERRUPT_HANDLER_TABLE_SIZE) and must provide an integer
+ * type capable to index the complete handler table (@ref
+ * bsp_interrupt_handler_index_type).
+ */
+#undef BSP_INTERRUPT_USE_INDEX_TABLE
+
+/**
+ * @brief Disables usage of the heap.
+ *
+ * If you define this, you have to define @ref BSP_INTERRUPT_USE_INDEX_TABLE as
+ * well.
+ */
+#undef BSP_INTERRUPT_NO_HEAP_USAGE
+
+#ifdef BSP_INTERRUPT_USE_INDEX_TABLE
+
+/**
+ * @brief Size of the handler table.
+ */
+#define BSP_INTERRUPT_HANDLER_TABLE_SIZE 63
+
+/**
+ * @brief Integer type capable to index the complete handler table.
+ */
+typedef uint8_t bsp_interrupt_handler_index_type;
+
+#endif /* BSP_INTERRUPT_USE_INDEX_TABLE */
+
+/** @} */
+
+#endif /* LIBBSP_POWERPC_QEMUPPC_IRQ_CONFIG_H */

c/src/lib/libbsp/powerpc/qemuppc/irq/irq.h

@@ -36,6 +36,7 @@
  * PCI IRQ handlers related definitions
  * CAUTION : BSP_PCI_IRQ_LOWEST_OFFSET should be equal to OPENPIC_VEC_SOURCE
  */
+/* FIXME: do we need PCI interrrupts here ? */
 #define BSP_PCI_IRQ_NUMBER		(16)
 #define BSP_PCI_IRQ_LOWEST_OFFSET	(0)
 #define BSP_PCI_IRQ_MAX_OFFSET		(BSP_PCI_IRQ_LOWEST_OFFSET + BSP_PCI_IRQ_NUMBER - 1)

c/src/lib/libbsp/powerpc/qemuppc/irq/irq_init.c

@@ -0,0 +1,63 @@
+/*===============================================================*\
+| Project: RTEMS generic MPC83xx BSP                              |
++-----------------------------------------------------------------+
+|                    Copyright (c) 2007                           |
+|                    Embedded Brains GmbH                         |
+|                    Obere Lagerstr. 30                           |
+|                    D-82178 Puchheim                             |
+|                    Germany                                      |
+|                    rtems@embedded-brains.de                     |
++-----------------------------------------------------------------+
+| 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.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file integrates the IPIC irq controller                    |
+\*===============================================================*/
+
+#include <rtems.h>
+
+#include <libcpu/powerpc-utility.h>
+#include <libcpu/raw_exception.h>
+
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <bsp/vectors.h>
+#include <bsp/ppc_exc_bspsupp.h>
+
+int qemuppc_exception_handler( BSP_Exception_frame *frame, unsigned exception_number)
+{
+  BSP_panic("Unexpected interrupt occured");
+  return 0;
+}
+
+/*
+ * functions to enable/disable a source at the ipic
+ */
+rtems_status_code bsp_interrupt_vector_enable( rtems_vector_number irqnum)
+{
+  /* FIXME: do something */
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code bsp_interrupt_vector_disable( rtems_vector_number irqnum)
+{
+  /* FIXME: do something */
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+	/* Install exception handler */
+	if (ppc_exc_set_handler( ASM_EXT_VECTOR, qemuppc_exception_handler)) {
+		return RTEMS_IO_ERROR;
+	}
+
+}
+
+void bsp_interrupt_handler_default( rtems_vector_number vector)
+{
+	printk( "Spurious interrupt: 0x%08x\n", vector);
+}

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

@@ -45,10 +45,6 @@ $(PROJECT_INCLUDE)/tm27.h: ../../shared/include/tm27.h $(PROJECT_INCLUDE)/$(dirs
 	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/tm27.h
 PREINSTALL_FILES += $(PROJECT_INCLUDE)/tm27.h
 
-$(PROJECT_INCLUDE)/bsp/irq.h: irq/irq.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
-	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq.h
-PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq.h
-
 $(PROJECT_INCLUDE)/bspopts.h: include/bspopts.h $(PROJECT_INCLUDE)/$(dirstamp)
 	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bspopts.h
 PREINSTALL_FILES += $(PROJECT_INCLUDE)/bspopts.h
@@ -73,3 +69,27 @@ $(PROJECT_LIB)/linkcmds: startup/linkcmds $(PROJECT_LIB)/$(dirstamp)
 	$(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds
 PREINSTALL_FILES += $(PROJECT_LIB)/linkcmds
 
+$(PROJECT_INCLUDE)/bsp/irq.h: irq/irq.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq.h
+
+$(PROJECT_INCLUDE)/bsp/irq-generic.h: ../../shared/include/irq-generic.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq-generic.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq-generic.h
+
+$(PROJECT_INCLUDE)/bsp/irq-config.h: irq/irq-config.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq-config.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq-config.h
+
+$(PROJECT_INCLUDE)/bsp/vectors.h: ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/vectors.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/vectors.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/vectors.h
+
+$(PROJECT_INCLUDE)/bsp/irq_supp.h: ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/irq_supp.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq_supp.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq_supp.h
+
+$(PROJECT_INCLUDE)/bsp/ppc_exc_bspsupp.h: ../../../libcpu/@RTEMS_CPU@/@exceptions@/bspsupport/ppc_exc_bspsupp.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+	$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/ppc_exc_bspsupp.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/ppc_exc_bspsupp.h
+

c/src/lib/libbsp/powerpc/qemuppc/start/start.S

@@ -7,6 +7,15 @@ _start:
         ori   %r1,%r1,_stack@l
         li     %r3,8192
         mtmsr   %r3
+
+	/* Read-only small data */
+	lis %r2, _SDA2_BASE_@h
+	ori %r2, %r2,_SDA2_BASE_@l
+
+	/* Read-write small data */
+	lis %r13, _SDA_BASE_@h
+	ori %r13, %r13,_SDA_BASE_@l
+
         bl      cmain
 	.size _start, . - _start
 	

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

@@ -1,11 +1,14 @@
+#include <rtems.h>
+#include <rtems/bspIo.h>
+
 void BSP_panic(char *s)
 {
-/*
   printk("%s PANIC %s\n",_RTEMS_version, s);
-  rebootQuestion();
+  while(1){};
-*/
 }
 
 void _BSP_Fatal_error(unsigned int v)
 {
+  printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
+  while(1){};
 }

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

@@ -29,6 +29,7 @@ __bzero (unsigned char *d, int len)
 
 extern unsigned char __sdata2_load[], __sdata2_start[], __sdata2_end[];
 extern unsigned char __data_load[], __data_start[], __data_end[];
+extern unsigned char __sdata_load[], __sdata_start[], __sdata_end[];
 extern unsigned char __sbss2_start[], __sbss2_end[];
 extern unsigned char __sbss_start[], __sbss_end[];
 extern unsigned char __bss_start[], __bss_end[];
@@ -38,13 +39,16 @@ extern void boot_card(void *);
 
 void cmain (void)
 {
-  printk( "hello #1\n");
+  /*
+   * 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 #2\n");
+  printk( "hello #\n");
   boot_card(0);
   printk( "end of BSP\n");
   __outb (0x92, 0x01);

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

@@ -14,6 +14,8 @@ RamBase = DEFINED(RamBase) ? RamBase : 0x0;
 RamSize = DEFINED(RamSize) ? RamSize : 4M;
 HeapSize = DEFINED(HeapSize) ? HeapSize : 0;
 
+bsp_section_align = 32;
+
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */
@@ -43,6 +45,7 @@ SECTIONS
 
     /* .gnu.warning sections are handled specially by elf32.em.  */
     *(.gnu.warning)
+    . = ALIGN (bsp_section_align);
     __text_end = .;
   } >ROM =0
   .init           :
@@ -77,7 +80,7 @@ SECTIONS
   {
     *(.rodata .rodata.* .gnu.linkonce.r.*)
     *(.rodata1)
-    . = ALIGN(4);
+    . = ALIGN (bsp_section_align);
     __rodata_end = .;
   } >ROM =0
 
@@ -88,14 +91,14 @@ SECTIONS
     __sdata2_start = .;
     PROVIDE (_SDA2_BASE_ = 32768);
     *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
-    . = ALIGN(4);
+    . = ALIGN (bsp_section_align);
     __sdata2_end = .;
   } >RAM
   .sbss2 :
   {
     __sbss2_start = .;
     *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)
-    . = ALIGN(4);
+    . = ALIGN (bsp_section_align);
     __sbss2_end = .;
   } >RAM
   __data_load = __sdata2_load + SIZEOF (.sdata2);
@@ -106,20 +109,38 @@ SECTIONS
     KEEP (*(.gnu.linkonce.d.*personality*))
     SORT(CONSTRUCTORS)
     *(.data1)
-    PROVIDE (_SDA_BASE_ = 32768);
+    . = ALIGN (bsp_section_align);
-    *(.sdata .sdata.* .gnu.linkonce.s.*)
-    . = ALIGN(4);
     __data_end = .;
   } >RAM
+  __sdata_load = __data_load + SIZEOF (.data);
+  .sdata : AT(__sdata_load) {
+    __sdata_start = .;
+    PROVIDE (_SDA_BASE_ = 32768);
+    *(.sdata .sdata.* .gnu.linkonce.s.*)
+
+    . = ALIGN (bsp_section_align);
+
+    _edata = .;
+    __sdata_end = .;
+    PROVIDE (edata = .);
+
+    /*
+     * BSP: End of data section
+     */
+    bsp_section_data_end = .;
+  } > RAM
+
   PROVIDE (__EXCEPT_START__ = .);
   .gcc_except_table   : { *(.gcc_except_table*) } >RAM
   PROVIDE (__EXCEPT_END__ = .);
+
   .sbss :
   {
     __sbss_start = .;
     *(.dynsbss)
     *(.sbss .sbss.* .gnu.linkonce.sb.*)
     *(.scommon)
+    . = ALIGN (bsp_section_align);
     __sbss_end = .;
   } >RAM
   .bss  :
@@ -128,7 +149,7 @@ SECTIONS
    *(.dynbss)
    *(.bss .bss.* .gnu.linkonce.b.*)
    *(COMMON)
-   . = ALIGN(4);
+    . = ALIGN (bsp_section_align);
    __bss_end = .;
 
    /* Allocate the main stack area.  Make sure it starts 16bytes aligned
@@ -137,6 +158,13 @@ SECTIONS
    _end = _stack;
   } >RAM
 
+  /*
+   * BSP: Interrupt stack
+   */
+  bsp_interrupt_stack_start = _end;
+  bsp_interrupt_stack_end = bsp_interrupt_stack_start + 32k;
+  bsp_interrupt_stack_size = bsp_interrupt_stack_end - bsp_interrupt_stack_start;
+
    WorkAreaBase = .;
    . = RamBase + RamSize;