Port of RTEMS to the ARM processor family by Eric Valette

<valette@crf.canon.fr> and Emmanuel Raguet <raguet@crf.canon.fr>
of Canon CRF - Communication Dept.  This port includes a
basic BSP that is sufficient to link hello world.

5 files changed, 495 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore
new file mode 100644
index 0000000000..282522db03
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am
new file mode 100644
index 0000000000..2120b13288
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am
@@ -0,0 +1,41 @@
+## 
+## $Id$
+## 
+
+AUTOMAKE_OPTIONS = foreign 1.4
+
+VPATH = @srcdir@:@srcdir@/../../../shared
+
+C_FILES = bsplibc.c bsppost.c bspstart.c exit.c bootcard.c main.c sbrk.c gnatinstallhandler.c
+C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o)
+
+S_FILES =
+S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o)
+
+startup_rel_OBJECTS = $(C_O_FILES) $(S_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(top_srcdir)/../../../../../../automake/lib.am
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+# USE_INIT_FINI tells main.c what C++ help we need.
+
+$(PGM): $(startup_rel_OBJECTS)
+	$(make-rel)
+
+$(PROJECT_RELEASE)/lib/linkcmds: linkcmds
+	$(INSTALL_DATA) $< $@
+
+TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds
+
+all: $(ARCH) $(startup_rel_OBJECTS) $(PGM) $(TMPINSTALL_FILES)
+
+.PRECIOUS: $(PGM)
+
+EXTRA_DIST = linkcmds
+
+include $(top_srcdir)/../../../../../../automake/local.am
+
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c
new file mode 100644
index 0000000000..a3bfa2672a
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c
@@ -0,0 +1,164 @@
+/*-------------------------------------------------------------------------+
+| This file contains the ARM BSP startup package. It includes application,
+| board, and monitor specific initialization and configuration. The generic CPU
+| dependent initialization has been performed before this routine is invoked. 
++--------------------------------------------------------------------------+
+|
+| Copyright (c) 2000 Canon Research Centre France SA.
+| Emmanuel Raguet, mailto:raguet@crf.canon.fr
+|
+|   The license and distribution terms for this file may be
+|   found in found in the file LICENSE in this distribution or at
+|   http://www.OARcorp.com/rtems/license.html.
+|
++--------------------------------------------------------------------------*/
+
+
+#include <bsp.h>
+#include <uart.h>
+#include <libcsupport.h>
+#include <rtems/libio.h>
+
+/*-------------------------------------------------------------------------+
+| Global Variables
++--------------------------------------------------------------------------*/
+
+/*
+ * must be initialized with the right address
+ */
+volatile unsigned long *Regs = (unsigned long*)0xdeadbeef; /* Chip registers */
+
+extern rtems_unsigned32 _end;         /* End of BSS. Defined in 'linkcmds'. */
+/* 
+ * Size of heap if it is 0 it will be dynamically defined by memory size, 
+ * otherwise the value should be changed by binary patch 
+ */
+rtems_unsigned32 _heap_size = 0; 
+
+/* Size of stack used during initialization. Defined in 'start.s'.  */
+extern rtems_unsigned32 _stack_size;
+
+rtems_unsigned32 rtemsFreeMemStart;
+                         /* Address of start of free memory - should be updated
+                            after creating new partitions or regions.         */
+
+/* The original BSP configuration 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;                     /* CPU configuration table.    */
+char            *rtems_progname;               /* Program name - from main(). */
+
+/*-------------------------------------------------------------------------+
+| External Prototypes
++--------------------------------------------------------------------------*/
+extern void rtems_irq_mngt_init(void);
+void bsp_libc_init( void *, unsigned32, int );
+void bsp_postdriver_hook(void);
+
+/*-------------------------------------------------------------------------+
+|         Function: bsp_pretasking_hook
+|      Description: BSP pretasking hook.  Called just before drivers are
+|                   initialized. Used to setup libc and install any BSP
+|                   extensions. NOTE: Must not use libc (to do io) from here,
+|                   since drivers are not yet initialized.
+| Global Variables: None.
+|        Arguments: None.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+void bsp_pretasking_hook(void)
+{
+
+  if(_heap_size == 0)
+    {
+      _heap_size = 0x420000 - rtemsFreeMemStart;
+    }
+        
+  bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0);
+  
+  rtemsFreeMemStart += _heap_size;           /* HEAP_SIZE  in KBytes */
+
+
+#ifdef RTEMS_DEBUG
+
+  rtems_debug_enable(RTEMS_DEBUG_ALL_MASK);
+
+#endif /* RTEMS_DEBUG */
+
+} /* bsp_pretasking_hook */
+ 
+
+/*-------------------------------------------------------------------------+
+|         Function: bsp_start
+|      Description: Called before main is invoked.
+| Global Variables: None.
+|        Arguments: None.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+void bsp_start_default( void )
+{
+  rtemsFreeMemStart = (rtems_unsigned32)(&_end);  /* &_end+_stack_size;*/
+                                    /* set the value of start of free memory. */
+
+  /* If we don't have command line arguments set default program name. */
+
+  Cpu_table.pretasking_hook         = bsp_pretasking_hook; /* init libc, etc. */
+  Cpu_table.predriver_hook          = NULL;                /* use system's    */
+  Cpu_table.postdriver_hook         = bsp_postdriver_hook;
+  Cpu_table.idle_task               = NULL;
+                                          /* do not override system IDLE task */
+  Cpu_table.do_zero_of_workspace    = TRUE;
+  Cpu_table.interrupt_stack_size    = 4096;
+  Cpu_table.extra_mpci_receive_server_stack = 0;
+
+  /* Place RTEMS workspace at beginning of free memory. */
+  BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart;
+ 
+   rtemsFreeMemStart += BSP_Configuration.work_space_size;
+
+  console_reserve_resources(&BSP_Configuration);
+
+  /*
+   * Init rtems exceptions management
+   */
+  rtems_exception_init_mngt();
+
+  /*
+   * Init rtems interrupt management
+   */
+  rtems_irq_mngt_init();
+
+  /*
+   *  The following information is very useful when debugging.
+   */
+
+#if 0
+  printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+  printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions );
+  printk( "microseconds_per_tick = 0x%x\n",
+     BSP_Configuration.microseconds_per_tick );
+  printk( "ticks_per_timeslice = 0x%x\n",
+     BSP_Configuration.ticks_per_timeslice );
+  printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices );
+  printk( "number_of_device_drivers = 0x%x\n",
+     BSP_Configuration.number_of_device_drivers );
+  printk( "Device_driver_table = 0x%x\n",
+     BSP_Configuration.Device_driver_table );
+
+  printk( "_heap_size = 0x%x\n", _heap_size );
+  /*  printk( "_stack_size = 0x%x\n", _stack_size );*/
+  printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart );
+  printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start );
+  printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+#endif
+
+} /* bsp_start */
+
+/*
+ *  By making this a weak alias for bsp_start_default, a brave soul
+ *  can override the actual bsp_start routine used.
+ */
+
+void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c
new file mode 100644
index 0000000000..7eb3056585
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------+
+| exit.c - ARM BSP 
++--------------------------------------------------------------------------+
+| Routines to shutdown and reboot the BSP.
++--------------------------------------------------------------------------+
+|
+| Copyright (c) 2000 Canon Research Centre France SA.
+| Emmanuel Raguet, mailto:raguet@crf.canon.fr
+|
+|   The license and distribution terms for this file may be
+|   found in found in the file LICENSE in this distribution or at
+|   http://www.OARcorp.com/rtems/license.html.
+|
++--------------------------------------------------------------------------*/
+
+
+#include <stdio.h>
+#include <bsp.h>
+#include <bspio.h>
+#include <rtems/libio.h>
+
+void rtemsReboot (void)
+{
+  asm volatile ("b _start");
+}
+
+void bsp_cleanup(void)
+{
+  unsigned char ch;
+  static   char line[]="\nEXECUTIVE SHUTDOWN! Any key to reboot...";
+  /*
+   * AT this point, the console driver is disconnected => we must
+   * use polled output/input. This is exactly what printk
+   * does.
+   */
+  printk("\n");
+  printk(line);
+  ch = BSP_poll_char();
+  rtemsReboot();
+}
+
+
+
+
+
+
+
+
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds
new file mode 100644
index 0000000000..f873318571
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds
@@ -0,0 +1,240 @@
+OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
+	      "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib);
+MEMORY {
+	FLASH (rx)  : ORIGIN = 0x200000, LENGTH = 512K
+	RAM   (!rx) : ORIGIN = 0x400000, LENGTH = 128K
+}
+
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+/*  . = 0 + SIZEOF_HEADERS;*/
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+
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