cvs.zerfleddert.de Git - ms2-kexec/blame_incremental

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Commit	Line	Data
	1	/*
	2	* relocate_kernel.S - put the kernel image in place to boot
	3	*/
	4
	5	#include <asm/kexec.h>
	6
	7	.globl relocate_new_kernel
	8	relocate_new_kernel:
	9
	10	ldr r0,kexec_indirection_page
	11	ldr r1,kexec_start_address
	12
	13	/*
	14	* If there is no indirection page (we are doing crashdumps)
	15	* skip any relocation.
	16	*/
	17	cmp r0, #0
	18	beq 2f
	19
	20	0: /* top, read another word for the indirection page */
	21	ldr r3, [r0],#4
	22
	23	/* Is it a destination page. Put destination address to r4 */
	24	tst r3,#1,0
	25	beq 1f
	26	bic r4,r3,#1
	27	b 0b
	28	1:
	29	/* Is it an indirection page */
	30	tst r3,#2,0
	31	beq 1f
	32	bic r0,r3,#2
	33	b 0b
	34	1:
	35
	36	/* are we done ? */
	37	tst r3,#4,0
	38	beq 1f
	39	b 2f
	40
	41	1:
	42	/* is it source ? */
	43	tst r3,#8,0
	44	beq 0b
	45	bic r3,r3,#8
	46	mov r6,#1024
	47	9:
	48	ldr r5,[r3],#4
	49	str r5,[r4],#4
	50	subs r6,r6,#1
	51	bne 9b
	52	b 0b
	53
	54	2:
	55	/* Jump to relocated kernel */
	56	mov lr,r1
	57	mov r0,#0
	58	ldr r1,kexec_mach_type
	59	ldr r2,kexec_boot_atags
	60	mov pc,lr
	61
	62	.align
	63
	64	.globl kexec_start_address
	65	kexec_start_address:
	66	.long 0x0
	67
	68	.globl kexec_indirection_page
	69	kexec_indirection_page:
	70	.long 0x0
	71
	72	.globl kexec_mach_type
	73	kexec_mach_type:
	74	.long 0x0
	75
	76	/* phy addr of the atags for the new kernel */
	77	.globl kexec_boot_atags
	78	kexec_boot_atags:
	79	.long 0x0
	80
	81	relocate_new_kernel_end:
	82
	83	.globl relocate_new_kernel_size
	84	relocate_new_kernel_size:
	85	.long relocate_new_kernel_end - relocate_new_kernel
	86
	87