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/*
 *  $Id: rxgen_romld.S,v 1.2 2001-09-27 11:59:59 chris Exp $
 */

#include "asm.h" 

        BEGIN_CODE

        .globl _romStart
        .globl _start
        .globl _romFaultStart
        .globl _led_array
        .text   
SYM(romStart ): 
SYM(_romStart ): 
          # This line is to make compiler happy.
        mov     0, g14
        ldconst 0x120f,r10   # BIST register
/*
         Setup code for in memory loaded image
*/
/*
          # Interrupt stack is used by default.
          # Copy all code (except Fault Table and Fault Handler)
          # from EPROM into DRAM.
*/
        ldconst 0x120f,r10   //# BIST register
        ldconst 0x2,r3
        stob    r3,0(r10)       //# 2->LED
/*
          # Zero all uninitialized data
*/
        callx   _zeroBss
        ldconst 0x120f,r10   //# BIST register
        ldconst 0x3,r3
        stob    r3,0(r10)       //# 3->LED
/*
          # And reinitialize processor.
          # _start is a few lines below.
          # _prcb is RAM-based struct PRCB.
*/
        ldconst 0x300, r4
        ldconst _pmc_start, r5
        ldconst _ram_prcb, r6
        sysctl  r4, r5, r6
/*
          # This point will never be reached.
*/

SYM(_pmc_start) :  
SYM(pmc_start) :  
        ldconst 0x120f,r10   # BIST register
        ldconst 0x4,r3
        stob    r3,0(r10)       //# 4->LED
        mov     0, g14
/*
          # To get ready to invoke procedures.
          # I'll use supervisor stack.
*/

        ldconst _svrStackPtr, fp
        lda     16*4(fp), sp 
        ldconst 0x5,r3
        stob    r3,0(r10)       //# 5->LED

        ldconst 0x1F0000, r4
        ldconst 0x1F2000, r3
        ldconst 0, r5
        modpc   r4, r3, r5

        ldconst 7,r3
        stob    r3,0(r10)       //# 7->LED

        callx   _rx_boot_card
/*        # if _romMain ever returns ...        */
        b       _romExit

SYM(romFaultStart) :  
SYM(_romFaultStart) :  

        mov     0, g14

        /* ldconst      0, sf0 XXX JRS */
/*
          # To get ready to invoke procedures.
          # I'll use supervisor stack.
          # _svrStackPtr is defined directly in rom.ld.
*/
        ldconst _svrStackPtr, fp
        lda     16*4(fp), sp 
/*
          # Set processor priority to zero.
*/
        ldconst 0x1F0000, r4
        ldconst 0, r5
        modpc   r4, r4, r5
//        # Now to real code
// Fix this up  callx   _romFaultMain
        callx   _rx_boot_card
//        # if _romMain ever returns ...        
        b       _romExit

_romExit :
//        # if _romMain ever returns ...
//      fmark
        b       _romExit



SYM(led_array):
        .byte 99
        .byte 1
        .byte 2
        .byte 3
        .byte 4
        .byte 5
        .byte 6
        .byte 7
        .byte 8
        .byte 9
        .byte 0xa
        .byte 0xb
        .byte 0xc