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/* arch/m68knommu/platform/68EZ328/ads_ram-head.S
 * 
 * Copyright (C) 1999  Vladimir Gurevich <vgurevic@cisco.com>
 *                     Bear & Hare Software, Inc.
 *
 * Based on: arch/m68knommu/platform/68EZ328/pilot-head.S
 * Copyright (C) 1998  D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
 *                     Kenneth Albanowski <kjahds@kjahds.com>,
 *                     The Silver Hammer Group, Ltd.
 */

        .global _stext
        .global _start
        .global __bss_start
        .global _ramend
        .global _boot_stack

#define ASSEMBLY

#include <linux/config.h>
#include <asm/MC68EZ328.h>

        .text
_start:
_stext:
        /*
         * We do not need to program the basic registers here, since
         * this is an image which is loaded directly into DRAM. It
         * is the xxx-init.b file that will take care of that.
         */

        moveal  #_boot_stack, %sp                                               
        movew   #0x2700, %sr

        /*
         * Here we start doing some real things
         */
        moveq   #13, %d7                /* '\r' */
        jsr putc

        moveq   #10, %d7                /* '\n' */
        jsr putc

        moveq   #65, %d7                /* 'A' */
        jsr putc

        movew   #16384, %d0  /* PLL settle wait loop */
L0:
        subw    #1, %d0
        bne     L0

        moveq   #66, %d7                /* 'B' */
        jsr     putc

        moveal  #__bss_start, %a0
        moveal  #end, %a1

        /* Copy 0 to %a0 until %a0 == %a1 */
L1:
        movel   #0, %a0@+
        cmpal   %a0, %a1
        bhi     L1

        moveq   #67, %d7                /* 'C' */
        jsr     putc

        pea     0
        pea     env
        pea     %sp@(4)
        pea     0

        moveq   #68, %d7                /* 'D' */
        jsr     putc


lp:
        jsr     start_kernel
        jmp lp
_exit:

        jmp     _exit


putc:
        moveb   %d7,UTX_TXDATA_ADDR
pclp:
        movew   UTX_ADDR, %d7
        andw    #UTX_TX_AVAIL, %d7
        beq     pclp
        rts

        .data
env:
        .long   0
        .text