launch.s

Sirf/Centrality公司GPS平台AtlasIII芯片AT640的Nboot源码

;*
;* Copyright (c) 2002-2003 Centrality Communications, Inc.
;* All Rights Reserved.
;*
;* Confidential and Proprietary to Centrality Communications Inc.
;*
;* launch.s: launch to CE
;* Auther: Tiefeng Tangrui Lin Zhisong
;*
;* $Log: launch.s,v $
;* Revision 1.1  2003/12/25 08:25:25  tangrui
;* Added by Rui Tang
;*
;* Revision 1.1.1.1  2003/10/10 07:16:10  weijie
;* no message
;*
;* Revision 1.2  2003/07/18 08:18:21  tangrui
;* no message
;*
;* Revision 1.1  2003/06/26 20:49:39  tangrui
;* no message
;*
;* Revision 1.2  2003/03/06 13:33:51  zhisong
;* disable dcache & mmu before we go to CE
;*
;
        AREA LaunchNk, CODE, READONLY

        EXPORT Launch
Launch
    mrc p15, 0, r1, c1, c0, 0
    bic r1, r1, #0x1200             ; Turning off ICache
    bic r1, r1, #0x7F               ; Turning off DCache & MMU
    mcr p15, 0, r1, c1, c0, 0       ; Disable MMU

    mov     pc, r0          ; Jump to program we are launching.

    END