#include "mem.h"/* *  Entered here from Compaq's bootldr.  First relocate to *  the location we're linked for and then copy back the *  decompressed kernel. * *  All  */TEXT _start(SB), $-4	MOVW	$setR12(SB), R12		/* load the SB */	MOVW	$1, R0		/* dance to make 5l think that the magic */	MOVW	$1, R1		/* numbers in WORDs below are being used */	CMP.S	R0, R1		/* and to align them to where bootldr wants */	BEQ	_start2	WORD	$0x016f2818	/* magic number to say we are a kernel */	WORD	$0xc0008000	/* entry point address */	WORD	$0		/* size?, or end of data? */ _start2: 	/* SVC mode, interrupts disabled */	MOVW	$(PsrDirq|PsrDfiq|PsrMsvc), R1	MOVW	R1, CPSR 	/* disable the MMU */	MOVW	$0x130, R1	MCR     CpMMU, 0, R1, C(CpControl), C(0x0) 	/* enable caches */	MRC	CpMMU, 0, R0, C(CpControl), C(0x0)	ORR	$(CpCdcache|CpCicache|CpCwb), R0	MCR     CpMMU, 0, R0, C(CpControl), C(0x0) 	/* flush caches */	MCR	CpMMU, 0, R0, C(CpCacheFlush), C(0x7), 0	/* drain prefetch */	MOVW	R0,R0							MOVW	R0,R0	MOVW	R0,R0	MOVW	R0,R0 	/* drain write buffer */	MCR	CpMMU, 0, R0, C(CpCacheFlush), C(0xa), 4 	/* relocate to where we expect to be */	MOVW	$(512*1024),R3	MOVW	$0xC0008000,R1	MOVW	$0xC0200000,R2	ADD	R1,R3_relloop:	MOVW	(R1),R0	MOVW	R0,(R2)	ADD	$4,R1	ADD	$4,R2	CMP.S	R1,R3	BNE	_relloop 	MOVW	$(MACHADDR+BY2PG), R13		/* stack */	SUB	$4, R13				/* link */ 	/* jump to where we've been relocated */	MOVW	$_relocated(SB),R15 TEXT _relocated(SB),$-4	BL	main(SB)	BL	exit(SB)	/* we shouldn't get here */_mainloop:	B	_mainloop	BL	_div(SB)			/* hack to get _div etc loaded */ TEXT mypc(SB),$-4	MOVW	R14,R0	RET TEXT draincache(SB),$-4	/* write back any dirty data */	MOVW	$0xe0000000,R0	ADD	$(8*1024),R0,R1_cfloop:	MOVW.P	32(R0),R2	CMP.S	R0,R1	BNE	_cfloop		/* drain write buffer and invalidate i&d cache contents */	MCR	CpMMU, 0, R0, C(CpCacheFlush), C(0xa), 4	MCR	CpMMU, 0, R0, C(CpCacheFlush), C(0x7), 0 	/* drain prefetch */	MOVW	R0,R0							MOVW	R0,R0	MOVW	R0,R0	MOVW	R0,R0 	/* disable caches */	MRC	CpMMU, 0, R0, C(CpControl), C(0x0)	BIC	$(CpCdcache|CpCicache|CpCwb), R0	MCR     CpMMU, 0, R0, C(CpControl), C(0x0)	RET