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+/*
+ * MCF5206eLITE startup code
+ *
+ * This file contains the entry point for the application.
+ * The name of this entry point is compiler dependent.
+ * It jumps to the BSP which is responsible for performing
+ * all initialization.
+ *
+ * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
+ * Author: Victor V. Vengerov <vvv@oktet.ru>
+ *
+ * Based on work:
+ * Author:
+ * David Fiddes, D.J@fiddes.surfaid.org
+ * http://www.calm.hw.ac.uk/davidf/coldfire/
+ *
+ * COPYRIGHT (c) 1989-1998.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ *
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#include "asm.h"
+#include "bsp.h"
+
+BEGIN_CODE
+
+/* Initial stack situated in on-chip static memory */
+#define INITIAL_STACK BSP_MEM_ADDR_SRAM+BSP_MEM_SIZE_SRAM-4
+
+ PUBLIC (INTERRUPT_VECTOR)
+SYM(INTERRUPT_VECTOR):
+ .long INITIAL_STACK | 00: initial SSP
+ .long start | 01: Initial PC
+ .long _unexp_exception | 02: Access Error
+ .long _unexp_exception | 03: Address Error
+ .long _unexp_exception | 04: Illegal Instruction
+ .long _reserved_int | 05: Reserved
+ .long _reserved_int | 06: Reserved
+ .long _reserved_int | 07: Reserved
+ .long _unexp_exception | 08: Priveledge Violation
+ .long _unexp_exception | 09: Trace
+ .long _unexp_exception | 0A: Unimplemented A-Line
+ .long _unexp_exception | 0B: Unimplemented F-Line
+ .long _unexp_exception | 0C: Debug interrupt
+ .long _reserved_int | 0D: Reserved
+ .long _unexp_exception | 0E: Format error
+ .long _unexp_exception | 0F: Uninitialized interrupt
+ .long _reserved_int | 10: Reserved
+ .long _reserved_int | 11: Reserved
+ .long _reserved_int | 12: Reserved
+ .long _reserved_int | 13: Reserved
+ .long _reserved_int | 14: Reserved
+ .long _reserved_int | 15: Reserved
+ .long _reserved_int | 16: Reserved
+ .long _reserved_int | 17: Reserved
+ .long _spurious_int | 18: Spurious interrupt
+ .long _avec1_int | 19: Autovector Level 1
+ .long _avec2_int | 1A: Autovector Level 2
+ .long _avec3_int | 1B: Autovector Level 3
+ .long _avec4_int | 1C: Autovector Level 4
+ .long _avec5_int | 1D: Autovector Level 5
+ .long _avec6_int | 1E: Autovector Level 6
+ .long _avec7_int | 1F: Autovector Level 7
+ .long _unexp_exception | 20: TRAP #0
+ .long _unexp_exception | 21: TRAP #1
+ .long _unexp_exception | 22: TRAP #2
+ .long _unexp_exception | 23: TRAP #3
+ .long _unexp_exception | 24: TRAP #4
+ .long _unexp_exception | 25: TRAP #5
+ .long _unexp_exception | 26: TRAP #6
+ .long _unexp_exception | 27: TRAP #7
+ .long _unexp_exception | 28: TRAP #8
+ .long _unexp_exception | 29: TRAP #9
+ .long _unexp_exception | 2A: TRAP #10
+ .long _unexp_exception | 2B: TRAP #11
+ .long _unexp_exception | 2C: TRAP #12
+ .long _unexp_exception | 2D: TRAP #13
+ .long _unexp_exception | 2E: TRAP #14
+ .long _unexp_exception | 2F: TRAP #15
+ .long _reserved_int | 30: Reserved
+ .long _reserved_int | 31: Reserved
+ .long _reserved_int | 32: Reserved
+ .long _reserved_int | 33: Reserved
+ .long _reserved_int | 34: Reserved
+ .long _reserved_int | 35: Reserved
+ .long _reserved_int | 36: Reserved
+ .long _reserved_int | 37: Reserved
+ .long _reserved_int | 38: Reserved
+ .long _reserved_int | 39: Reserved
+ .long _reserved_int | 3A: Reserved
+ .long _reserved_int | 3B: Reserved
+ .long _reserved_int | 3C: Reserved
+ .long _reserved_int | 3D: Reserved
+ .long _reserved_int | 3E: Reserved
+ .long _reserved_int | 3F: Reserved
+
+ .long _unexp_int | 40-FF: User defined interrupts
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | 50:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | 60:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | 70:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | 80:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | 90:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | A0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | B0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | C0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | D0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | E0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ .long _unexp_int | F0:
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+ .long _unexp_int
+
+ PUBLIC(start)
+SYM(start):
+ move.w #0x2700,sr | First turn off all interrupts!
+
+ move.l #(BSP_MEM_ADDR_SRAM + MCF5206E_RAMBAR_V),d0
+ movec d0,rambar0 | ...so we have a stack
+
+ move.l #(INITIAL_STACK),sp | Set up stack again (may be we are
+ | going here from monitor or with
+ | BDM interface assistance)
+
+ /*
+ * Remainder of the startup code is handled by C code
+ */
+ jmp SYM(Init5206e) | Start C code (which never returns)
+
+/***************************************************************************
+ Function : CopyDataClearBSSAndStart
+
+ Description : Copy DATA segment, clear BSS segment, initialize heap,
+ initialise real stack, start C program. Assume that DATA and BSS sizes
+ are multiples of 4.
+ ***************************************************************************/
+ PUBLIC (CopyDataClearBSSAndStart)
+SYM(CopyDataClearBSSAndStart):
+ lea copy_start,a0 | Get start of DATA in RAM
+ lea SYM(etext),a2 | Get start of DATA in ROM
+ cmpl a0,a2 | Are they the same?
+ beq.s NOCOPY | Yes, no copy necessary
+ lea copy_end,a1 | Get end of DATA in RAM
+ bra.s COPYLOOPTEST | Branch into copy loop
+COPYLOOP:
+ movel a2@+,a0@+ | Copy word from ROM to RAM
+COPYLOOPTEST:
+ cmpl a1,a0 | Done?
+ bcs.s COPYLOOP | No, skip
+NOCOPY:
+
+ lea clear_start,a0 | Get start of BSS
+ lea clear_end,a1 | Get end of BSS
+ clrl d0 | Value to set
+ bra.s ZEROLOOPTEST | Branch into clear loop
+ZEROLOOP:
+ movel d0,a0@+ | Clear a word
+ZEROLOOPTEST:
+ cmpl a1,a0 | Done?
+ bcs.s ZEROLOOP | No, skip
+ move 4(a7),d0
+ move d0,_M68k_Ramsize | Set Ram Size
+
+ /*
+ * Right : Now we're ready to boot RTEMS
+ */
+ clrl d0 | Pass in null to all boot_card() params
+ movel d0,a7@- | environp
+ movel d0,a7@- | argv
+ movel d0,a7@- | argc
+ jsr SYM(boot_card) | Call C boot_card function to startup RTEMS
+
+# Wait forever
+_stop:
+ nop
+ stop #0x2700
+ jmp _stop
+
+# The following labelled nops is a placeholders for breakpoints
+_unexp_exception:
+ nop
+ jmp _stop
+
+_unexp_int:
+ nop
+ jmp _stop
+
+_reserved_int:
+ nop
+ jmp _stop
+
+_spurious_int:
+ nop
+ jmp _stop
+
+_avec1_int:
+ nop
+ jmp _unexp_int
+
+_avec2_int:
+ nop
+ jmp _unexp_int
+
+_avec3_int:
+ nop
+ jmp _unexp_int
+
+_avec4_int:
+ nop
+ jmp _unexp_int
+
+_avec5_int:
+ nop
+ jmp _unexp_int
+
+_avec6_int:
+ nop
+ jmp _unexp_int
+
+_avec7_int:
+ nop
+ jmp _unexp_int
+
+
+END_CODE
+
+END
+
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