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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/mips/boot/compressed/head.S
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/*

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 * This file is subject to the terms and conditions of the GNU General Public

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 * License.  See the file "COPYING" in the main directory of this archive

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 * for more details.

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 *

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 * Copyright (C) 1994, 1995 Waldorf Electronics

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 * Written by Ralf Baechle and Andreas Busse

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 * Copyright (C) 1995 - 1999 Ralf Baechle

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 * Copyright (C) 1996 Paul M. Antoine

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 * Modified for DECStation and hence R3000 support by Paul M. Antoine

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 * Further modifications by David S. Miller and Harald Koerfgen

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 * Copyright (C) 1999 Silicon Graphics, Inc.

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 */

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#include <asm/asm.h>

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#include <asm/regdef.h>

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	LEAF(start)

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	/* Save boot rom start args */

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	move	s0, a0

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	move	s1, a1

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	move	s2, a2

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	move	s3, a3

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	/* Clear BSS */

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	PTR_LA	a0, _edata

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	PTR_LA	a2, _end

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1:	PTR_S	zero, 0(a0)

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	PTR_ADDIU a0, a0, PTRSIZE

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	bne	a2, a0, 1b

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	PTR_LA	a0, (.heap)	     /* heap address */

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	PTR_LA	sp, (.stack + 8192)  /* stack address */

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	PTR_LA	t9, decompress_kernel

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	jalr	t9

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2:

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	move	a0, s0

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	move	a1, s1

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	move	a2, s2

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	move	a3, s3

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	PTR_LI	t9, KERNEL_ENTRY

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	jalr	t9

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3:

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	b	3b

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	END(start)

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	.comm .heap,BOOT_HEAP_SIZE,4

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	.comm .stack,4096*2,4

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