/* * relocate_kernel.S - put the kernel image in place to boot * 2005.9.17 kogiidena@eggplant.ddo.jp * * LANDISK/sh4 is supported. Maybe, SH archtecture works well. * * This source code is licensed under the GNU General Public License, * Version 2.  See the file COPYING for more details. */#include <linux/linkage.h>#include <asm/addrspace.h>#include <asm/page.h> 		.globl relocate_new_kernelrelocate_new_kernel:	/* r4 = indirection_page   */	/* r5 = reboot_code_buffer */	/* r6 = start_address      */	/* r7 = vbr_reg            */ 	mov.l	10f,r8	  /* PAGE_SIZE */	mov.l	11f,r9    /* P2SEG */ 	/*  stack setting */	add	r8,r5	mov	r5,r15 	bra	1f	mov	r4,r0	  /* cmd = indirection_page */0:	mov.l	@r4+,r0	  /* cmd = *ind++ */ 1:	/* addr = (cmd | P2SEG) & 0xfffffff0 */	mov	r0,r2	or	r9,r2	mov	#-16,r1	and	r1,r2 	/* if(cmd & IND_DESTINATION) dst = addr  */	tst	#1,r0	bt	2f	bra	0b	mov	r2,r5 2:	/* else if(cmd & IND_INDIRECTION) ind = addr  */	tst	#2,r0	bt	3f	bra	0b	mov	r2,r4 3:	/* else if(cmd & IND_DONE) goto 6  */	tst	#4,r0	bt	4f	bra	6f	nop 4:	/* else if(cmd & IND_SOURCE) memcpy(dst,addr,PAGE_SIZE) */	tst	#8,r0	bt	0b 	mov	r8,r3	shlr2	r3	shlr2	r35:	dt	r3	mov.l	@r2+,r1   /*  16n+0 */	mov.l	r1,@r5	add	#4,r5	mov.l	@r2+,r1	  /*  16n+4 */	mov.l	r1,@r5	add	#4,r5	mov.l	@r2+,r1   /*  16n+8 */	mov.l	r1,@r5	add	#4,r5	mov.l	@r2+,r1   /*  16n+12 */	mov.l	r1,@r5	add	#4,r5	bf	5b 	bra	0b	nop6:#ifdef CONFIG_SH_STANDARD_BIOS	ldc   r7, vbr#endif	jmp @r6	nop 	.align 210:	.long	PAGE_SIZE11:	.long	P2SEG relocate_new_kernel_end: 	.globl relocate_new_kernel_sizerelocate_new_kernel_size:	.long relocate_new_kernel_end - relocate_new_kernel