start.S revision 1.1.1.1.6.2
1 1.1.1.1.6.2 jdolecek /* $NetBSD: start.S,v 1.1.1.1.6.2 2017/12/03 11:36:11 jdolecek Exp $ */ 2 1.1.1.1.6.2 jdolecek 3 1.1.1.1.6.2 jdolecek /* 4 1.1.1.1.6.2 jdolecek * Copyright 2000, 2001 5 1.1.1.1.6.2 jdolecek * Broadcom Corporation. All rights reserved. 6 1.1.1.1.6.2 jdolecek * 7 1.1.1.1.6.2 jdolecek * This software is furnished under license and may be used and copied only 8 1.1.1.1.6.2 jdolecek * in accordance with the following terms and conditions. Subject to these 9 1.1.1.1.6.2 jdolecek * conditions, you may download, copy, install, use, modify and distribute 10 1.1.1.1.6.2 jdolecek * modified or unmodified copies of this software in source and/or binary 11 1.1.1.1.6.2 jdolecek * form. No title or ownership is transferred hereby. 12 1.1.1.1.6.2 jdolecek * 13 1.1.1.1.6.2 jdolecek * 1) Any source code used, modified or distributed must reproduce and 14 1.1.1.1.6.2 jdolecek * retain this copyright notice and list of conditions as they appear in 15 1.1.1.1.6.2 jdolecek * the source file. 16 1.1.1.1.6.2 jdolecek * 17 1.1.1.1.6.2 jdolecek * 2) No right is granted to use any trade name, trademark, or logo of 18 1.1.1.1.6.2 jdolecek * Broadcom Corporation. The "Broadcom Corporation" name may not be 19 1.1.1.1.6.2 jdolecek * used to endorse or promote products derived from this software 20 1.1.1.1.6.2 jdolecek * without the prior written permission of Broadcom Corporation. 21 1.1.1.1.6.2 jdolecek * 22 1.1.1.1.6.2 jdolecek * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED 23 1.1.1.1.6.2 jdolecek * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF 24 1.1.1.1.6.2 jdolecek * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 25 1.1.1.1.6.2 jdolecek * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE 26 1.1.1.1.6.2 jdolecek * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE 27 1.1.1.1.6.2 jdolecek * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.1.1.1.6.2 jdolecek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.1.1.1.6.2 jdolecek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30 1.1.1.1.6.2 jdolecek * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 1.1.1.1.6.2 jdolecek * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 32 1.1.1.1.6.2 jdolecek * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 1.1.1.1.6.2 jdolecek */ 34 1.1.1.1.6.2 jdolecek 35 1.1.1.1.6.2 jdolecek #define STACK_SIZE 8192 36 1.1.1.1.6.2 jdolecek 37 1.1.1.1.6.2 jdolecek #include "include/asm.h" 38 1.1.1.1.6.2 jdolecek 39 1.1.1.1.6.2 jdolecek 40 1.1.1.1.6.2 jdolecek .bss 41 1.1.1.1.6.2 jdolecek 42 1.1.1.1.6.2 jdolecek .comm stack_bottom,STACK_SIZE 43 1.1.1.1.6.2 jdolecek 44 1.1.1.1.6.2 jdolecek .text 45 1.1.1.1.6.2 jdolecek 46 1.1.1.1.6.2 jdolecek LEAF(start) 47 1.1.1.1.6.2 jdolecek 48 1.1.1.1.6.2 jdolecek la gp,_gp 49 1.1.1.1.6.2 jdolecek 50 1.1.1.1.6.2 jdolecek la sp,stack_bottom+STACK_SIZE-32 51 1.1.1.1.6.2 jdolecek 52 1.1.1.1.6.2 jdolecek /* 53 1.1.1.1.6.2 jdolecek * On entry: a0 = the firmware handle, a2 = firmware's 54 1.1.1.1.6.2 jdolecek * for secondary bootstraps, a1 is the booted device handle 55 1.1.1.1.6.2 jdolecek * Don't trash a0..a3 until main is called! 56 1.1.1.1.6.2 jdolecek */ 57 1.1.1.1.6.2 jdolecek 58 1.1.1.1.6.2 jdolecek 59 1.1.1.1.6.2 jdolecek #if defined(STANDALONE_PROGRAM) 60 1.1.1.1.6.2 jdolecek /* 61 1.1.1.1.6.2 jdolecek * This should not be used anywhere. 62 1.1.1.1.6.2 jdolecek */ 63 1.1.1.1.6.2 jdolecek 64 1.1.1.1.6.2 jdolecek #error "don't do this." 65 1.1.1.1.6.2 jdolecek 66 1.1.1.1.6.2 jdolecek #else /* defined(STANDALONE_PROGRAM) */ 67 1.1.1.1.6.2 jdolecek 68 1.1.1.1.6.2 jdolecek #if !defined(PRIMARY_BOOTBLOCK) && !defined(UNIFIED_BOOTBLOCK) 69 1.1.1.1.6.2 jdolecek 70 1.1.1.1.6.2 jdolecek la sp,start 71 1.1.1.1.6.2 jdolecek 72 1.1.1.1.6.2 jdolecek #endif /* !defined(PRIMARY_BOOTBLOCK) && !defined(UNIFIED_BOOTBLOCK) */ 73 1.1.1.1.6.2 jdolecek 74 1.1.1.1.6.2 jdolecek #endif /* defined(STANDALONE_PROGRAM) */ 75 1.1.1.1.6.2 jdolecek 76 1.1.1.1.6.2 jdolecek /* 77 1.1.1.1.6.2 jdolecek * Zero BSS 78 1.1.1.1.6.2 jdolecek */ 79 1.1.1.1.6.2 jdolecek 80 1.1.1.1.6.2 jdolecek la t0,_edata /* t0 = address */ 81 1.1.1.1.6.2 jdolecek la t1,_end 82 1.1.1.1.6.2 jdolecek 83 1.1.1.1.6.2 jdolecek 1: sw zero,0(t0) 84 1.1.1.1.6.2 jdolecek sw zero,4(t0) 85 1.1.1.1.6.2 jdolecek sw zero,8(t0) 86 1.1.1.1.6.2 jdolecek sw zero,16(t0) 87 1.1.1.1.6.2 jdolecek add t0,16 88 1.1.1.1.6.2 jdolecek ble t0,t1,1b 89 1.1.1.1.6.2 jdolecek 90 1.1.1.1.6.2 jdolecek 91 1.1.1.1.6.2 jdolecek /* 92 1.1.1.1.6.2 jdolecek * Run the main program. 93 1.1.1.1.6.2 jdolecek */ 94 1.1.1.1.6.2 jdolecek 95 1.1.1.1.6.2 jdolecek jal main /* transfer to C */ 96 1.1.1.1.6.2 jdolecek 97 1.1.1.1.6.2 jdolecek XLEAF(halt) 98 1.1.1.1.6.2 jdolecek li t0,0xBFC00000 /* transfer back to firmware */ 99 1.1.1.1.6.2 jdolecek j t0 100 1.1.1.1.6.2 jdolecek END(start) 101 1.1.1.1.6.2 jdolecek 102 1.1.1.1.6.2 jdolecek 103 1.1.1.1.6.2 jdolecek 104 1.1.1.1.6.2 jdolecek LEAF(__main) 105 1.1.1.1.6.2 jdolecek j ra 106 1.1.1.1.6.2 jdolecek END(__main) 107 1.1.1.1.6.2 jdolecek 108 1.1.1.1.6.2 jdolecek LEAF(_rtt) 109 1.1.1.1.6.2 jdolecek li t0,0xBFC00000 110 1.1.1.1.6.2 jdolecek j t0 111 1.1.1.1.6.2 jdolecek END(_rtt) 112
Indexes created Wed Oct 22 13:09:56 GMT 2025