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diff --git a/c/src/lib/libbsp/m68k/mcf5235/start/start.S b/c/src/lib/libbsp/m68k/mcf5235/start/start.S
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-/*
- * mcf5235 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) 1989-1998.
- * 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 <rtems/asm.h>
-
-#define SRAM_SIZE (64*1024)
-#define DEFAULT_IPSBAR 0x40000000
-
-BEGIN_CODE
-#define INITIAL_STACK __SRAMBASE+SRAM_SIZE-4
-
- PUBLIC (INTERRUPT_VECTOR)
-SYM(INTERRUPT_VECTOR):
- .long INITIAL_STACK | 0: Initial 'SSP'
- .long start | 1: Initial PC
- .long SYM(_uhoh) | 2: Bus error
- .long SYM(_uhoh) | 3: Address error
- .long SYM(_uhoh) | 4: Illegal instruction
- .long SYM(_uhoh) | 5: Zero division
- .long SYM(_uhoh) | 6: CHK, CHK2 instruction
- .long SYM(_uhoh) | 7: TRAPcc, TRAPV instructions
- .long SYM(_uhoh) | 8: Privilege violation
- .long SYM(_uhoh) | 9: Trace
- .long SYM(_uhoh) | 10: Line 1010 emulator
- .long SYM(_uhoh) | 11: Line 1111 emulator
- .long SYM(_uhoh) | 12: Hardware breakpoint
- .long SYM(_uhoh) | 13: Reserved for coprocessor violation
- .long SYM(_uhoh) | 14: Format error
- .long SYM(_uhoh) | 15: Uninitialized interrupt
- .long SYM(_uhoh) | 16: Unassigned, reserved
- .long SYM(_uhoh) | 17:
- .long SYM(_uhoh) | 18:
- .long SYM(_uhoh) | 19:
- .long SYM(_uhoh) | 20:
- .long SYM(_uhoh) | 21:
- .long SYM(_uhoh) | 22:
- .long SYM(_uhoh) | 23:
- .long SYM(_spuriousInterrupt) | 24: Spurious interrupt
- .long SYM(_uhoh) | 25: Level 1 interrupt autovector
- .long SYM(_uhoh) | 26: Level 2 interrupt autovector
- .long SYM(_uhoh) | 27: Level 3 interrupt autovector
- .long SYM(_uhoh) | 28: Level 4 interrupt autovector
- .long SYM(_uhoh) | 29: Level 5 interrupt autovector
- .long SYM(_uhoh) | 30: Level 6 interrupt autovector
- .long SYM(_uhoh) | 31: Level 7 interrupt autovector
- .long SYM(_uhoh) | 32: Trap instruction (0-15)
- .long SYM(_uhoh) | 33:
- .long SYM(_uhoh) | 34:
- .long SYM(_uhoh) | 35:
- .long SYM(_uhoh) | 36:
- .long SYM(_uhoh) | 37:
- .long SYM(_uhoh) | 38:
- .long SYM(_uhoh) | 39:
- .long SYM(_uhoh) | 40:
- .long SYM(_uhoh) | 41:
- .long SYM(_uhoh) | 42:
- .long SYM(_uhoh) | 43:
- .long SYM(_uhoh) | 44:
- .long SYM(_uhoh) | 45:
- .long SYM(_uhoh) | 46:
- .long SYM(_uhoh) | 47:
- .long SYM(_uhoh) | 48: Reserved for coprocessor
- .long SYM(_uhoh) | 49:
- .long SYM(_uhoh) | 50:
- .long SYM(_uhoh) | 51:
- .long SYM(_uhoh) | 52:
- .long SYM(_uhoh) | 53:
- .long SYM(_uhoh) | 54:
- .long SYM(_uhoh) | 55:
- .long SYM(_uhoh) | 56:
- .long SYM(_uhoh) | 57:
- .long SYM(_uhoh) | 58:
- .long SYM(_uhoh) | 59: Unassigned, reserved
- .long SYM(_uhoh) | 60:
- .long SYM(_uhoh) | 61:
- .long SYM(_uhoh) | 62:
- .long SYM(_uhoh) | 63:
- .long SYM(_spuriousInterrupt) | 64: User spurious handler
- .long SYM(_uhoh) | 65:
- .long SYM(_uhoh) | 66:
- .long SYM(_uhoh) | 67:
- .long SYM(_uhoh) | 68:
- .long SYM(_uhoh) | 69:
- .long SYM(_uhoh) | 70:
- .long SYM(_uhoh) | 71:
- .long SYM(_uhoh) | 72:
- .long SYM(_uhoh) | 73:
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- .long SYM(_uhoh) | 76:
- .long SYM(_uhoh) | 77:
- .long SYM(_uhoh) | 78:
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- .long SYM(_uhoh) | 213:
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- .long SYM(_uhoh) | 216:
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- .long SYM(_uhoh) | 225:
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- .long SYM(_uhoh) | 228:
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- .long SYM(_uhoh) | 231:
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- .long SYM(_uhoh) | 233:
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- .long SYM(_uhoh) | 235:
- .long SYM(_uhoh) | 236:
- .long SYM(_uhoh) | 237:
- .long SYM(_uhoh) | 238:
- .long SYM(_uhoh) | 239:
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- .long SYM(_uhoh) | 241:
- .long SYM(_uhoh) | 242:
- .long SYM(_uhoh) | 243:
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- .long SYM(_uhoh) | 245:
- .long SYM(_uhoh) | 246:
- .long SYM(_uhoh) | 247:
- .long SYM(_uhoh) | 248:
- .long SYM(_uhoh) | 249:
- .long SYM(_uhoh) | 250:
- .long SYM(_uhoh) | 251:
- .long SYM(_uhoh) | 252:
- .long SYM(_uhoh) | 253:
- .long SYM(_uhoh) | 254:
- .long SYM(_uhoh) | 255:
-
-/*
- * Default trap handler
- * With an oscilloscope you can see AS* stop
- */
-.align 4
- PUBLIC (_uhoh)
-SYM(_uhoh):
- nop | Leave spot for breakpoint
- stop #0x2700 | Stop with interrupts disabled
- bra.w SYM(_uhoh) | Stuck forever
-
-.align 4
- PUBLIC (_spuriousInterrupt)
-SYM(_spuriousInterrupt):
- addql #1,SYM(_M68kSpuriousInterruptCount)
- rte
-/***************************************************************************
- Function : start
-
- Description : setup the internal SRAM for use and setup the INITIAL STACK ptr.
- Also enable the internal peripherals
- ***************************************************************************/
-.align 4
- PUBLIC (start)
-SYM(start):
- move.w #0x0000,d0 | Turn off watchdog timer
- move.w d0, (0x40140000)
- move.l #0x01000000,d0 | Set system frequency to 150 MHz
- move.l d0, (0x40120000)
- move.w #0x2700,sr | Disable interrupts
-
- move.l #__SRAMBASE+1,d0 | Enable the MCF5235 internal SRAM
- movec d0,%rambar | ...so we have a stack
-
- move.l #0x20000201, d0
- move.l d0,(0x40000008) | set up 2nd RAMBAR to make 2nd port avail to FEC
-
- move.l #__IPSBAR+1,d0 | Enable the MCF5235 internal peripherals
- move.l d0,DEFAULT_IPSBAR
-
- /*
- * Remainder of the startup code is handled by C code
- */
- jmp SYM(Init5235) | Start C code (which never returns)
-
-/***************************************************************************
- Function : CopyDataClearBSSAndStart
-
- Description : Copy DATA segment, Copy SRAM segment, clear BSS segment,
- start C program. Assume that DATA and BSS sizes are multiples of 4.
- ***************************************************************************/
-.align 4
-
- PUBLIC (CopyDataClearBSSAndStart)
-SYM(CopyDataClearBSSAndStart):
- lea SYM(_data_dest_start),a0 | Get start of DATA in RAM
- lea SYM(_data_src_start),a2 | Get start of DATA in ROM
- cmpl a0,a2 | Are they the same?
- beq.s NODATACOPY | Yes, no copy necessary
- lea SYM(_data_dest_end),a1 | Get end of DATA in RAM
- bra.s DATACOPYLOOPTEST | Branch into copy loop
-DATACOPYLOOP:
- movel a2@+,a0@+ | Copy word from ROM to RAM
-DATACOPYLOOPTEST:
- cmpl a1,a0 | Done?
- bcs.s DATACOPYLOOP | No, skip
-NODATACOPY:
-
-/* Now, clear BSS */
- 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
-
-
- /*
- * Right : Now we're ready to boot RTEMS
- */
- clrl d0 | Pass in null to all boot_card() params
- movel d0,a7@- | command line
- jsr SYM(boot_card) | Call C boot_card function to startup RTEMS
- movel a7@+,d0
-MULTI_TASK_EXIT:
- nop
- nop
- trap #14
- bra MULTI_TASK_EXIT
- .align 2
-END_CODE
-
-BEGIN_DATA_DCL
- .align 2
- PUBLIC (_M68kSpuriousInterruptCount)
-SYM (_M68kSpuriousInterruptCount):
- .long 0
-END_DATA_DCL
-
-END
-
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