bsps: Move startup files to bsps

Adjust build support files to new directory layout.

This patch is a part of the BSP source reorganization.

Update #3285.

5 files changed, 659 insertions, 0 deletions

diff --git a/bsps/powerpc/virtex4/start/bsp_specs b/bsps/powerpc/virtex4/start/bsp_specs
new file mode 100644
index 0000000000..ccbea2690c
--- /dev/null
+++ b/bsps/powerpc/virtex4/start/bsp_specs
@@ -0,0 +1,10 @@
+%rename startfile old_startfile
+%rename endfile   old_endfile
+
+*startfile:
+%{!qrtems: %(old_startfile)} \
+%{!nostdlib: %{qrtems: ecrti%O%s rtems_crti%O%s crtbegin.o%s}}
+
+*endfile:
+%{!qrtems: %(old_endfile)} \
+%{qrtems: crtend.o%s ecrtn.o%s}
diff --git a/bsps/powerpc/virtex4/start/bspclean.c b/bsps/powerpc/virtex4/start/bspclean.c
new file mode 100644
index 0000000000..bd5829e0b2
--- /dev/null
+++ b/bsps/powerpc/virtex4/start/bspclean.c
@@ -0,0 +1,54 @@
+/*
+ *  This routine normally is part of start.s and usually returns
+ *  control to a monitor.
+ *
+ *  INPUT:  NONE
+ *
+ *  OUTPUT: NONE
+ *
+ *  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.
+ *
+ *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspclean.c:
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  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 <bsp.h>
+#include <bsp/bootcard.h>
+
+static void _noopfun(void) {}
+
+void app_bsp_cleanup(void)
+__attribute__(( weak, alias("_noopfun") ));
+
+void bsp_fatal_extension(
+  rtems_fatal_source source,
+  bool always_set_to_false,
+  rtems_fatal_code error
+)
+{
+  if ( source == RTEMS_FATAL_SOURCE_EXIT ) {
+    app_bsp_cleanup();
+  }
+
+  /* All done.  Hang out. */
+  BSP_ask_for_reset();
+}
diff --git a/bsps/powerpc/virtex4/start/bspstart.c b/bsps/powerpc/virtex4/start/bspstart.c
new file mode 100644
index 0000000000..d5c255be6d
--- /dev/null
+++ b/bsps/powerpc/virtex4/start/bspstart.c
@@ -0,0 +1,219 @@
+/*
+ *  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.
+ */
+
+/*
+ *  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
+ *  Modifications for Virtex4 by Richard Claus <claus@slac.stanford.edu>
+ */
+#include <rtems.h>
+#include <rtems/config.h>
+#include <rtems/bspIo.h>
+#include <rtems/counter.h>
+#include <rtems/libio.h>
+#include <rtems/libcsupport.h>
+#include <rtems/sysinit.h>
+
+#include <libcpu/cpuIdent.h>
+#include <libcpu/spr.h>
+
+#include <bsp.h>
+#include <bsp/vectors.h>
+#include <bsp/bootcard.h>
+#include <bsp/irq.h>
+
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+
+#define DO_DOWN_ALIGN(x,a) ((x) & ~((a)-1))
+
+#define DO_UP_ALIGN(x,a)   DO_DOWN_ALIGN(((x) + (a) - 1 ),a)
+
+#define CPU_DOWN_ALIGN(x)  DO_DOWN_ALIGN(x, CPU_ALIGNMENT)
+#define CPU_UP_ALIGN(x)    DO_UP_ALIGN(x, CPU_ALIGNMENT)
+
+
+/* Defined in linkcmds linker script */
+LINKER_SYMBOL(RamBase);
+LINKER_SYMBOL(RamSize);
+LINKER_SYMBOL(__bsp_ram_start);
+LINKER_SYMBOL(__bsp_ram_end);
+LINKER_SYMBOL(__rtems_end);
+LINKER_SYMBOL(_stack);
+LINKER_SYMBOL(StackSize);
+LINKER_SYMBOL(__stack_base);
+LINKER_SYMBOL(WorkAreaBase);
+LINKER_SYMBOL(MsgAreaBase);
+LINKER_SYMBOL(MsgAreaSize);
+LINKER_SYMBOL(__phy_ram_end);
+LINKER_SYMBOL(bsp_exc_vector_base);
+
+
+/* Expected by clock.c */
+uint32_t    bsp_clicks_per_usec;
+
+
+/*
+ * Provide weak aliases so that RTEMS distribution builds
+ */
+static void _noopfun(void) {}
+
+
+void app_bsp_start(void)
+__attribute__(( weak, alias("_noopfun") ));
+
+void app_bsp_predriver_hook(void)
+__attribute__(( weak, alias("_noopfun") ));
+
+
+static char* bspMsgBuffer = (char*)MsgAreaBase;
+
+static void __bsp_outchar_to_memory(char c)
+{
+  static char* msgBuffer = (char*)MsgAreaBase;
+  *msgBuffer++ = c;
+  if (msgBuffer >= &bspMsgBuffer[(int)MsgAreaSize])  msgBuffer = bspMsgBuffer;
+  *msgBuffer   = 0x00;                /* Overwrite next location to show EOM */
+}
+
+
+void BSP_ask_for_reset(void)
+{
+  printk("\nSystem stopped, issue RESET");
+
+  for(;;);
+}
+
+
+/*===================================================================*/
+
+/*
+ *  BSP start routine.  Called by boot_card().
+ *
+ *  This routine does the bulk of the system initialization.
+ */
+void bsp_start(void)
+{
+  uintptr_t          intrStackStart;
+  uintptr_t          intrStackSize;
+
+  ppc_cpu_id_t       myCpu;
+  ppc_cpu_revision_t myCpuRevision;
+
+  /* Set the character output function;  The application may override this */
+  BSP_output_char = __bsp_outchar_to_memory;
+
+  printk("RTEMS %s\n", rtems_get_version_string());
+
+  /*
+   * Get CPU identification dynamically. Note that the get_ppc_cpu_type()
+   * function stores the result in global variables so that it can be used later...
+   */
+  myCpu         = get_ppc_cpu_type();
+  myCpuRevision = get_ppc_cpu_revision();
+  printk("CPU: 0x%04x,  Revision: 0x%04x = %d,  Name: %s\n",
+         myCpu, myCpuRevision, myCpuRevision, get_ppc_cpu_type_name(myCpu));
+
+  /*
+   *  Initialize the device driver parameters
+   */
+
+  /* Timebase register ticks/microsecond;  The application may override these */
+  bsp_clicks_per_usec        = 350;
+  rtems_counter_initialize_converter(bsp_clicks_per_usec * 1000000);
+
+  /*
+   * Initialize the interrupt related settings.
+   */
+  intrStackStart = CPU_UP_ALIGN((uint32_t)__bsp_ram_start);
+  intrStackSize  = rtems_configuration_get_interrupt_stack_size();
+
+  ppc_exc_initialize(intrStackStart, intrStackSize);
+
+  /* Let the user know what parameters we were compiled with */
+  printk("                  Base/Start     End         Size\n"
+         "RAM:              %p                    %p\n"
+         "RTEMS:                           %p\n"
+         "Interrupt Stack:  0x%08x              0x%x\n"
+         "Stack:            %p             %p          %p\n"
+         "Workspace:        %p             %p\n"
+         "MsgArea:          %p             %p\n"
+         "Physical RAM                     %p\n",
+         RamBase,        RamSize,
+         __rtems_end,
+         intrStackStart,                intrStackSize,
+         __stack_base,   _stack,        StackSize,
+         WorkAreaBase,   __bsp_ram_end,
+         MsgAreaBase,    MsgAreaSize,
+         __phy_ram_end);
+
+  /*
+   * Initialize RTEMS IRQ system
+   */
+  BSP_rtems_irq_mngt_init(0);
+
+  /* Continue with application-specific initialization */
+  app_bsp_start();
+}
+
+
+/*
+ *  BSP predriver hook.  Called by boot_card() just before drivers are
+ *  initialized.  Clear out any stale interrupts here.
+ */
+static void virtex4_pre_driver_hook(void)
+{
+  app_bsp_predriver_hook();
+}
+
+RTEMS_SYSINIT_ITEM(
+  virtex4_pre_driver_hook,
+  RTEMS_SYSINIT_BSP_PRE_DRIVERS,
+  RTEMS_SYSINIT_ORDER_MIDDLE
+);
diff --git a/bsps/powerpc/virtex4/start/dummy_console.c b/bsps/powerpc/virtex4/start/dummy_console.c
new file mode 100644
index 0000000000..642fe45618
--- /dev/null
+++ b/bsps/powerpc/virtex4/start/dummy_console.c
@@ -0,0 +1,88 @@
+#include <rtems.h>
+#include <rtems/libio.h>
+#include <rtems/bspIo.h>
+#include <rtems/console.h>
+
+#include <string.h>
+
+ssize_t app_memory_write(int minor, const char* buf, size_t len)
+__attribute__(( weak, alias("__bsp_memory_write") ));
+
+ssize_t __bsp_memory_write(int minor, const char* buf, size_t len);
+rtems_device_driver console_initialize(rtems_device_major_number major,
+                                       rtems_device_minor_number minor,
+                                       void*                     arg);
+
+ssize_t __bsp_memory_write(int minor, const char* buf, size_t len)
+{
+  const char* const last = buf+len;
+  while (buf < last)
+  {
+    rtems_putc(*buf++);
+  }
+  return len;
+}
+
+static rtems_termios_callbacks gMemCallbacks = {
+        0,                /* firstOpen */
+        0,                /* lastClose */
+        0,                /* PollRead */
+        app_memory_write, /* write */
+        0,                /* SetAttr */
+        0,                /* stopRemoteTx */
+        0,                /* startRemoteTx */
+        0                 /* outputUsesInterrupts */
+};
+
+rtems_device_driver console_initialize(rtems_device_major_number major,
+                                       rtems_device_minor_number minor,
+                                       void*                     arg)
+{
+  rtems_status_code status;
+
+  rtems_termios_initialize();
+
+  status = rtems_io_register_name("/dev/console", major, 0);
+
+  if (status != RTEMS_SUCCESSFUL)  rtems_fatal_error_occurred (status);
+  return RTEMS_SUCCESSFUL;
+}
+
+rtems_device_driver console_open(rtems_device_major_number major,
+                                 rtems_device_minor_number minor,
+                                 void*                     arg)
+{
+  rtems_status_code sc;
+
+  sc = rtems_termios_open (major, minor, arg, &gMemCallbacks);
+
+  return sc;
+}
+
+rtems_device_driver console_close(rtems_device_major_number major,
+                                  rtems_device_minor_number minor,
+                                  void*                     arg)
+{
+  return rtems_termios_close(arg);
+}
+
+rtems_device_driver console_read(rtems_device_major_number major,
+                                 rtems_device_minor_number minor,
+                                 void*                     arg)
+{
+  return rtems_termios_read(arg);
+}
+
+rtems_device_driver console_write(rtems_device_major_number major,
+                                  rtems_device_minor_number minor,
+                                  void*                     arg)
+{
+  return rtems_termios_write(arg);
+}
+
+rtems_device_driver console_control(rtems_device_major_number major,
+                                    rtems_device_minor_number minor,
+                                    void*                     arg)
+{
+  return rtems_termios_ioctl(arg);
+}
diff --git a/bsps/powerpc/virtex4/start/linkcmds b/bsps/powerpc/virtex4/start/linkcmds
new file mode 100644
index 0000000000..50d3a3f13c
--- /dev/null
+++ b/bsps/powerpc/virtex4/start/linkcmds
@@ -0,0 +1,288 @@
+/*
+ *  This file contains directives for the GNU linker which are specific to the
+ *  Virtex 4 PPC 405.  No assumptions are made on the firmware in the FPGA.
+ *  This file is intended to be used together with start.S to generate
+ *  downloadable code.
+ */
+
+OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
+OUTPUT_ARCH(powerpc)
+
+ENTRY(download_entry)
+EXTERN(download_entry)
+EXTERN(__vectors)
+
+MsgAreaSize       = DEFINED(MsgAreaSize)   ? MsgAreaSize   : 1M;
+RamBase           = DEFINED(RamBase)       ? RamBase       : 0x0;
+RamSize           = DEFINED(RamSize)       ? RamSize       : 128M - MsgAreaSize;
+IntrStackSize     = DEFINED(IntrStackSize) ? IntrStackSize : 16K;
+StackSize         = DEFINED(StackSize)     ? StackSize     : 64K;
+HeapSize          = DEFINED(HeapSize)      ? HeapSize      : 0; /* 0=Use def */
+
+
+MEMORY
+{
+  VECTORS         : ORIGIN = 0x00000000, LENGTH = 12K
+  RAM             : ORIGIN = 0x00003000, LENGTH = 128M - 12K
+}
+
+
+SECTIONS
+{
+  bsp_exc_vector_base = 0x100;
+  __exeentry          = download_entry;
+  __exestart          = bsp_exc_vector_base;
+  .vectors bsp_exc_vector_base : { *(.vectors)                  } > VECTORS
+
+  /* Read-only sections, merged into text segment: */
+  .interp         : { *(.interp)                                } > RAM
+  .hash           : { *(.hash)                                  } > RAM
+  .dynsym         : { *(.dynsym)                                } > RAM
+  .dynstr         : { *(.dynstr)                                } > RAM
+  .gnu.version    : { *(.gnu.version)                           } > RAM
+  .gnu.version_d  : { *(.gnu.version_d)                         } > RAM
+  .gnu.version_r  : { *(.gnu.version_r)                         } > RAM
+  .rela.text      : { *(.rela.text) *(.rela.gnu.linkonce.t*)    } > RAM
+  .rela.data      : { *(.rela.data) *(.rela.gnu.linkonce.d*)    } > RAM
+  .rela.rodata    : { *(.rela.rodata*) *(.rela.gnu.linkonce.r*) } > RAM
+  .rela.got       : { *(.rela.got)                              } > RAM
+  .rela.got1      : { *(.rela.got1)                             } > RAM
+  .rela.got2      : { *(.rela.got2)                             } > RAM
+  .rela.ctors     : { *(.rela.ctors)                            } > RAM
+  .rela.dtors     : { *(.rela.dtors)                            } > RAM
+  .rela.init      : { *(.rela.init)                             } > RAM
+  .rela.fini      : { *(.rela.fini)                             } > RAM
+  .rela.bss       : { *(.rela.bss)                              } > RAM
+  .rela.plt       : { *(.rela.plt)                              } > RAM
+  .rela.sdata     : { *(.rela.sdata)                            } > RAM
+  .rela.sbss      : { *(.rela.sbss)                             } > RAM
+  .rela.sdata2    : { *(.rela.sdata2)                           } > RAM
+  .rela.sbss2     : { *(.rela.sbss2)                            } > RAM
+  .rela.dyn       : { *(.rela.dyn)                              } > RAM
+
+  /* Initialization code */
+  .init           : { PROVIDE (_init = .);
+                      *ecrti.o(.init)
+                      KEEP(*(.init))
+                      *ecrtn.o(.init)
+                    } > RAM
+
+  .text           : { *(.entry)
+                      *(.text)
+                      *(.text.*)
+
+                      /* Special FreeBSD sysctl sections */
+                      . = ALIGN (16);
+                      __start_set_sysctl_set = .;
+                      *(set_sysctl_*);
+                      __stop_set_sysctl_set = ABSOLUTE(.);
+                      *(set_domain_*);
+                      *(set_pseudo_*);
+
+                      /* .gnu.warning sections are handled specially by elf32.em
+                       */
+                      *(.gnu.warning)
+                      *(.gnu.linkonce.t*)
+                    } > RAM
+
+  /* Finalization code */
+  .fini           : { PROVIDE (_fini = .);
+                      *ecrti.o(.fini)
+                      KEEP(*(.fini))
+                      *ecrtn.o(.fini)
+                    } > RAM
+
+  /* Miscellaneous read-only data */
+  .rodata         : { *(.rodata.* .gnu.linkonce.r*) KEEP (*(SORT(.rtemsroset.*))) } > RAM
+  .rodata1        : { *(.rodata1)                                      } > RAM
+
+  .tdata : {
+    _TLS_Data_begin = .;
+    *(.tdata .tdata.* .gnu.linkonce.td.*)
+    _TLS_Data_end = .;
+  } >RAM
+
+  .tbss : {
+    _TLS_BSS_begin = .;
+    *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon)
+    _TLS_BSS_end = .;
+  } >RAM
+
+  _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin;
+  _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin;
+  _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin;
+  _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin;
+  _TLS_Size = _TLS_BSS_end - _TLS_Data_begin;
+  _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss));
+
+  /* Initialised small data addressed as offsets from r2 */
+  .sdata2         : { PROVIDE (_SDA2_BASE_ = 32768); *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)          } > RAM
+
+  /* Zeroed small data addressed as offsets from r2 */
+  .sbss2          : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)
+
+                      /* Avoid empty sdata2/sbss2 area: __eabi would not set up
+                       * r2 which may be important if run-time loading is used
+                       */
+                      . += 1;
+
+                      PROVIDE (__SBSS2_END__ = .);
+                    } > RAM
+
+  /* Exception frame info */
+  .eh_frame       : { *(.eh_frame .eh_frame.*)                         } > RAM
+  .eh_frame_hdr   : { *(.eh_frame_hdr)                                 } > RAM
+
+  /*  Declares where the .text section ends */
+  _etext          = .;
+  PROVIDE (etext  = .);
+
+  /* Initialized R/W Data section goes in RAM */
+  .data           : { PROVIDE(__DATA_START__ = ABSOLUTE(.) );
+                      *(.data)
+                      *(.data.*)
+                      KEEP (*(SORT(.rtemsrwset.*)))
+                      *(.gnu.linkonce.d*)
+                    } > RAM
+
+  .data1          : { *(.data1)                                        } > RAM
+
+                        PROVIDE (__EXCEPT_START__ = .);
+  .gcc_except_table : { *(.gcc_except_table .gcc_except_table.*)       } > RAM
+                        PROVIDE (__EXCEPT_END__ = .);
+
+  .got1           : { *(.got1)                                         } > RAM
+
+  /* Put .ctors and .dtors next to the .got2 section, so that the pointers
+   * get relocated with -mrelocatable. Also put in the .fixup pointers.
+   * The current compiler no longer needs this, but keep it around for 2.7.2.
+   */
+                      PROVIDE (_GOT2_START_ = .);
+  .got2           : { *(.got2)                                         } > RAM
+
+  .dynamic        : { *(.dynamic)                                      } > RAM
+
+  .ctors          : { /* gcc uses crtbegin.o to find the start of
+                       * the constructors, so we make sure it is
+                       * first.  Because this is a wildcard, it
+                       * doesn't matter if the user does not
+                       * actually link against crtbegin.o; the
+                       * linker won't look for a file to match a
+                       * wildcard.  The wildcard also means that it
+                       * doesn't matter which directory crtbegin.o
+                       * is in.
+                       */
+                      KEEP (*crtbegin.o(.ctors))
+                      /* We don't want to include the .ctor section from
+                       * the crtend.o file until after the sorted ctors.
+                       * The .ctor section from the crtend file contains the
+                       * end of ctors marker and it must be last.
+                       */
+                      KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
+                      KEEP (*(SORT(.ctors.*)))
+                      KEEP (*(.ctors))
+                    } > RAM
+
+  .dtors          : { KEEP (*crtbegin.o(.dtors))
+                      KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
+                      KEEP (*(SORT(.dtors.*)))
+                      KEEP (*(.dtors))
+                    } > RAM
+
+                      PROVIDE (_FIXUP_START_ = .);
+  .fixup          : { *(.fixup)                                        } > RAM
+                      PROVIDE (_FIXUP_END_ = .);
+
+                      PROVIDE (_GOT2_END_ = .);
+
+                      PROVIDE (_GOT_START_ = .);
+  .got            : { __got_start = .;
+                      *(.got)
+                    } > RAM
+
+  .got.plt        : { *(.got.plt)                                      } > RAM
+                      PROVIDE (_GOT_END_ = .);
+
+  .jcr            : { KEEP (*(.jcr))                                   } > RAM
+
+  /* We want the small data sections together, so single-instruction offsets
+   * can access them all, and initialized data all before uninitialized, so
+   * we can shorten the on-disk segment size.
+   */
+  /* Initialised small data addressed as offsets from r13 */
+  .sdata          : { PROVIDE (_SDA_BASE_ = 32768); *(.sdata* .gnu.linkonce.s.*)                     } > RAM
+
+  _edata          = .;
+  PROVIDE (edata  = .);
+
+  /* Zeroed small data addressed as offsets from r13 */
+  .sbss           : { PROVIDE (__sbss_start = .);
+                      *(.dynsbss)
+                      *(.sbss*)
+                      *(.gnu.linkonce.sb.*)
+                      *(.scommon)
+
+                      /* Avoid empty sdata/sbss area: __eabi would not set up
+                       * r13, which may be important if run-time loading is used
+                       */
+                      . += 1;
+
+                      PROVIDE (__SBSS_END__ = .);
+                      PROVIDE (__sbss_end   = .);
+                    } > RAM
+
+  .plt            : { *(.plt)                                          } > RAM
+  .iplt           : { *(.iplt)                                         } > RAM
+
+  /* Zeroed large data */
+  .bss            : { PROVIDE (__bss_start = .);
+                      *(.dynbss)
+                      *(.bss)
+                      *(.bss.*)
+                      *(.gnu.linkonce.b*)
+                      *(COMMON)
+
+                      PROVIDE (__bss_end = ALIGN(4));
+                      __bss_size = __bss_end - __bss_start;
+                    } > RAM
+
+  __exeend        = ALIGN(4);
+  __rtems_end     = .;
+  .               = ALIGN(0x10);        /* Align to a cache-line boundary */
+  PROVIDE(__bsp_ram_start = .);
+
+  /* Interrupt stack: aligned on a cache-line boundary */
+  .              += IntrStackSize;
+  __intrStack     = .;
+
+  /* Main stack lives here */
+  _stack          = ALIGN(0x10); 	/* Align to a cache-line boundary */
+  .              += StackSize;
+  __stack_base    = .;                  /* Initial stack builds downwards */
+
+  /* RTEMS workspace: size specified by application */
+  WorkAreaBase    = ALIGN(0x10); 	/* Align to a cache-line boundary */
+
+  /* The heap comes after the work space */
+
+   .              = RamBase + RamSize;
+  PROVIDE(__bsp_ram_end = .);
+
+  /* Message area for capturing early printk output */
+  /* Placed here to be easily findable with a debugger */
+  MsgAreaBase     = .;
+  .              += MsgAreaSize;
+
+  __phy_ram_end   = .;                  /* True end of physical memory */
+
+  /DISCARD/ :
+  {
+    *(.comment)
+  }
+
+  /* Some configuration constants: Not clear why they're placed here */
+  __dccr          = 0x80000000;
+  __iccr          = 0x80000000;
+  __sgr           = 0x7fffffff;
+  __vectors       = 0;
+}