/* * 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> LEAF(relocate_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)	PTR_ADD		s4, s4, SZREG	PTR_ADD		s2, s2, SZREG	LONG_SUB	s6, s6, 1	beq		s6, zero, process_entry	b		copy_word	b		process_entry done:	/* jump to kexec_start_address */	j		s1	END(relocate_new_kernel) kexec_start_address:	EXPORT(kexec_start_address)	PTR		0x0	.size		kexec_start_address, PTRSIZE kexec_indirection_page:	EXPORT(kexec_indirection_page)	PTR		0	.size		kexec_indirection_page, PTRSIZE relocate_new_kernel_end: relocate_new_kernel_size:	EXPORT(relocate_new_kernel_size)	PTR		relocate_new_kernel_end - relocate_new_kernel	.size		relocate_new_kernel_size, PTRSIZE