/* *  linux/arch/arm/kernel/head-armo.S * *  Copyright (C) 1994-2000 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * *  26-bit kernel startup code */#include <linux/config.h>#include <linux/linkage.h>#include <asm/mach-types.h>		.globl	SYMBOL_NAME(swapper_pg_dir)		.equ	SYMBOL_NAME(swapper_pg_dir),	0x0207d000/* * Entry point. */		.section ".text.init",#alloc,#execinstrENTRY(stext)__entry:	cmp	pc, #0x02000000		ldrlt	pc, LC0			@ if 0x01800000, call at 0x02080000		teq	r0, #0			@ Check for old calling method		blne	oldparams		@ Move page if old		adr	r0, LC0		ldmib	r0, {r2-r5, sp}		@ Setup stack		mov	r0, #01:		cmp	r2, r3			@ Clear BSS		strcc	r0, [r2], #4		bcc	1b		bl	detect_proc_type		str	r0, [r4]		bl	detect_arch_type		str	r0, [r5]		mov	fp, #0		b	SYMBOL_NAME(start_kernel)LC0:		.word	SYMBOL_NAME(_stext)		.word	SYMBOL_NAME(__bss_start)		@ r2		.word	SYMBOL_NAME(_end)			@ r3		.word	SYMBOL_NAME(processor_id)		@ r4		.word	SYMBOL_NAME(__machine_arch_type)	@ r5		.word	SYMBOL_NAME(init_task_union)+8192	@ sparm2_id:	.long	0x41560200arm250_id:	.long	0x41560250		.alignoldparams:	mov	r4, #0x02000000		add	r3, r4, #0x00080000		add	r4, r4, #0x0007c0001:		ldmia	r0!, {r5 - r12}		stmia	r4!, {r5 - r12}		cmp	r4, r3		blt	1b		mov	pc, lr/* * We need some way to automatically detect the difference between * these two machines.  Unfortunately, it is not possible to detect * the presence of the SuperIO chip, because that will hang the old * Archimedes machines solid. *//* DAG: Outdated, these have been combined !!!!!!! */detect_arch_type:#if defined(CONFIG_ARCH_ARC)		mov	r0, #MACH_TYPE_ARCHIMEDES#elif defined(CONFIG_ARCH_A5K)		mov	r0, #MACH_TYPE_A5K#endif		mov	pc, lrdetect_proc_type:		mov	ip, lr		mov	r2, #0xea000000		@ Point undef instr to continuation		adr	r0, continue - 12		orr	r0, r2, r0, lsr #2		mov	r1, #0		str	r0, [r1, #4]		ldr	r0, arm2_id		swp	r2, r2, [r1]		@ check for swp (ARM2 cant)		ldr	r0, arm250_id		mrc	15, 0, r3, c0, c0	@ check for CP#15 (ARM250 cant)		mov	r0, r3continue:	mov	r2, #0xeb000000		@ Make undef vector loop		sub	r2, r2, #2		str	r2, [r1, #4]		mov	pc, ip