start.S revision 1.3.40.2
1 1.3.40.2 wrstuden /* $NetBSD: start.S,v 1.3.40.2 2008/01/06 05:00:54 wrstuden Exp $ */ 2 1.1 cdi 3 1.1 cdi /* 4 1.1 cdi * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 1.1 cdi * All rights reserved. 6 1.1 cdi * 7 1.1 cdi * This code is derived from software contributed to The NetBSD Foundation 8 1.1 cdi * by Wayne Knowles 9 1.1 cdi * 10 1.1 cdi * Redistribution and use in source and binary forms, with or without 11 1.1 cdi * modification, are permitted provided that the following conditions 12 1.1 cdi * are met: 13 1.1 cdi * 1. Redistributions of source code must retain the above copyright 14 1.1 cdi * notice, this list of conditions and the following disclaimer. 15 1.1 cdi * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cdi * notice, this list of conditions and the following disclaimer in the 17 1.1 cdi * documentation and/or other materials provided with the distribution. 18 1.1 cdi * 3. All advertising materials mentioning features or use of this software 19 1.1 cdi * must display the following acknowledgement: 20 1.1 cdi * This product includes software developed by the NetBSD 21 1.1 cdi * Foundation, Inc. and its contributors. 22 1.1 cdi * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1 cdi * contributors may be used to endorse or promote products derived 24 1.1 cdi * from this software without specific prior written permission. 25 1.1 cdi * 26 1.1 cdi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1 cdi * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1 cdi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1 cdi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1 cdi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1 cdi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1 cdi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1 cdi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1 cdi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1 cdi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1 cdi * POSSIBILITY OF SUCH DAMAGE. 37 1.1 cdi */ 38 1.1 cdi 39 1.1 cdi #include <mips/asm.h> 40 1.3.40.1 wrstuden #include <mips/cache_r4k.h> 41 1.1 cdi 42 1.1 cdi LEAF(start) 43 1.1 cdi .set noreorder 44 1.3.40.1 wrstuden .set mips3 45 1.1 cdi #ifdef __GP_SUPPORT__ 46 1.1 cdi la gp, _C_LABEL (_gp) 47 1.1 cdi #endif 48 1.1 cdi la sp, start - CALLFRAME_SIZ 49 1.1 cdi sw zero, CALLFRAME_RA(sp) # clear ra for debugger 50 1.1 cdi sw zero, CALLFRAME_SP(sp) # clear fp for debugger 51 1.1 cdi move s0, a0 # save argc 52 1.1 cdi move s1, a1 # save argv 53 1.1 cdi 54 1.3.40.1 wrstuden jal _C_LABEL(flushcache) 55 1.3.40.1 wrstuden nop 56 1.3.40.1 wrstuden 57 1.1 cdi la a0, _C_LABEL (edata) # clear BSS 58 1.1 cdi move a1, zero 59 1.1 cdi la a2, _C_LABEL (end) 60 1.1 cdi jal _C_LABEL(memset) # memset(edata, 0, end - edata) 61 1.1 cdi subu a2, a2, a0 62 1.1 cdi 63 1.1 cdi move a0, s0 # restore argc 64 1.1 cdi jal _C_LABEL(main) # main(unsigned int) 65 1.1 cdi move a1, s1 # restore argv 66 1.1 cdi 67 1.3.40.2 wrstuden XLEAF(_rtt) 68 1.1 cdi jal _C_LABEL(cpu_reboot) # failed, reboot 69 1.1 cdi nop 70 1.1 cdi END(start) 71 1.3.40.1 wrstuden 72 1.3.40.1 wrstuden LEAF(flushcache) 73 1.3.40.1 wrstuden li t0, 0x80000000 74 1.3.40.1 wrstuden addu t1, t0, 32*1024 /* flush 32KB */ 75 1.3.40.1 wrstuden subu t1, t1, 0x100 /* per 256 bytes */ 76 1.3.40.1 wrstuden 77 1.3.40.1 wrstuden 1: 78 1.3.40.1 wrstuden /* flush I-cache */ 79 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x000(t0) 80 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x020(t0) 81 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x040(t0) 82 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x060(t0) 83 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x080(t0) 84 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x0a0(t0) 85 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x0c0(t0) 86 1.3.40.1 wrstuden cache CACHE_R4K_I | CACHEOP_R4K_INDEX_INV, 0x0e0(t0) 87 1.3.40.1 wrstuden 88 1.3.40.1 wrstuden /* flush D-cache */ 89 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x000(t0) 90 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x020(t0) 91 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x040(t0) 92 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x060(t0) 93 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x080(t0) 94 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x0a0(t0) 95 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x0c0(t0) 96 1.3.40.1 wrstuden cache CACHE_R4K_D | CACHEOP_R4K_INDEX_WB_INV, 0x0e0(t0) 97 1.3.40.1 wrstuden 98 1.3.40.1 wrstuden bne t0, t1, 1b 99 1.3.40.1 wrstuden addu t0, t0, 0x100 100 1.3.40.1 wrstuden 101 1.3.40.1 wrstuden j ra 102 1.3.40.1 wrstuden nop 103 1.3.40.1 wrstuden END(flushcache) 104
Indexes created Fri Oct 03 17:10:05 GMT 2025