/* * relocate_kernel.S for kexec * Created by <nschichan@corp.free.fr> on Thu Oct 12 17:49:57 2006 * * This source code is licensed under the GNU General Public License, * Version 2.  See the file COPYING for more details. */ #include <asm/asm.h>#include <asm/asmmacro.h>#include <asm/regdef.h>#include <asm/page.h>#include <asm/mipsregs.h>#include <asm/stackframe.h>#include <asm/addrspace.h> 	.globl relocate_new_kernelrelocate_new_kernel: 	PTR_L	s0, kexec_indirection_page	PTR_L	s1, kexec_start_address process_entry:	PTR_L	s2, (s0)	PTR_ADD	s0, s0, SZREG 	/* destination page */	and	s3, s2, 0x1	beq	s3, zero, 1f	and	s4, s2, ~0x1	/* store destination addr in s4 */	move	a0, s4	b	process_entry 1:	/* indirection page, update s0  */	and	s3, s2, 0x2	beq	s3, zero, 1f	and	s0, s2, ~0x2	b	process_entry 1:	/* done page */	and	s3, s2, 0x4	beq	s3, zero, 1f	b	done1:	/* source page */	and	s3, s2, 0x8	beq	s3, zero, process_entry	and	s2, s2, ~0x8	li	s6, (1 << PAGE_SHIFT) / SZREG copy_word:	/* copy page word by word */	REG_L	s5, (s2)	REG_S	s5, (s4)	INT_ADD	s4, s4, SZREG	INT_ADD	s2, s2, SZREG	INT_SUB	s6, s6, 1	beq	s6, zero, process_entry	b	copy_word	b	process_entry done:	/* jump to kexec_start_address */	j	s1 	.globl kexec_start_addresskexec_start_address:	.long	0x0 	.globl kexec_indirection_pagekexec_indirection_page:	.long	0x0 relocate_new_kernel_end: 	.globl relocate_new_kernel_sizerelocate_new_kernel_size:	.long relocate_new_kernel_end - relocate_new_kernel