1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1994, 1995 Waldorf Electronics 7 * Written by Ralf Baechle and Andreas Busse 8 * Copyright (C) 1995 - 1999 Ralf Baechle 9 * Copyright (C) 1996 Paul M. Antoine 10 * Modified for DECStation and hence R3000 support by Paul M. Antoine 11 * Further modifications by David S. Miller and Harald Koerfgen 12 * Copyright (C) 1999 Silicon Graphics, Inc. 13 */ 14 15 #include <asm/asm.h> 16 #include <asm/regdef.h> 17 18 .set noreorder 19 .cprestore 20 LEAF(start) 21 start: 22 /* Save boot rom start args */ 23 move s0, a0 24 move s1, a1 25 move s2, a2 26 move s3, a3 27 28 /* Clear BSS */ 29 PTR_LA a0, _edata 30 PTR_LA a2, _end 31 1: sw zero, 0(a0) 32 bne a2, a0, 1b 33 addiu a0, a0, 4 34 35 PTR_LA a0, (.heap) /* heap address */ 36 PTR_LA sp, (.stack + 8192) /* stack address */ 37 38 PTR_LA ra, 2f 39 PTR_LA k0, decompress_kernel 40 jr k0 41 nop 42 2: 43 move a0, s0 44 move a1, s1 45 move a2, s2 46 move a3, s3 47 PTR_LI k0, KERNEL_ENTRY 48 jr k0 49 nop 50 3: 51 b 3b 52 nop 53 END(start) 54 55 .comm .heap,BOOT_HEAP_SIZE,4 56 .comm .stack,4096*2,4 57