1/*
 2 * relocate_kernel.S - put the kernel image in place to boot
 3 */
 4
 5#include <linux/linkage.h>
 6#include <asm/assembler.h>
 7#include <asm/kexec.h>
 8
 9	.align	3	/* not needed for this code, but keeps fncpy() happy */
10
11ENTRY(relocate_new_kernel)
12
13	ldr	r0,kexec_indirection_page
14	ldr	r1,kexec_start_address
15
16	/*
17	 * If there is no indirection page (we are doing crashdumps)
18	 * skip any relocation.
19	 */
20	cmp	r0, #0
21	beq	2f
22
230:	/* top, read another word for the indirection page */
24	ldr	r3, [r0],#4
25
26	/* Is it a destination page. Put destination address to r4 */
27	tst	r3,#1,0
28	beq	1f
29	bic	r4,r3,#1
30	b	0b
311:
32	/* Is it an indirection page */
33	tst	r3,#2,0
34	beq	1f
35	bic	r0,r3,#2
36	b	0b
371:
38
39	/* are we done ? */
40	tst	r3,#4,0
41	beq	1f
42	b	2f
43
441:
45	/* is it source ? */
46	tst	r3,#8,0
47	beq	0b
48	bic r3,r3,#8
49	mov r6,#1024
509:
51	ldr r5,[r3],#4
52	str r5,[r4],#4
53	subs r6,r6,#1
54	bne 9b
55	b 0b
56
572:
58	/* Jump to relocated kernel */
59	mov lr,r1
60	mov r0,#0
61	ldr r1,kexec_mach_type
62	ldr r2,kexec_boot_atags
63 ARM(	ret lr	)
64 THUMB(	bx lr		)
65
66	.align
67
68	.globl kexec_start_address
69kexec_start_address:
70	.long	0x0
71
72	.globl kexec_indirection_page
73kexec_indirection_page:
74	.long	0x0
75
76	.globl kexec_mach_type
77kexec_mach_type:
78	.long	0x0
79
80	/* phy addr of the atags for the new kernel */
81	.globl kexec_boot_atags
82kexec_boot_atags:
83	.long	0x0
84
85ENDPROC(relocate_new_kernel)
86
87relocate_new_kernel_end:
88
89	.globl relocate_new_kernel_size
90relocate_new_kernel_size:
91	.long relocate_new_kernel_end - relocate_new_kernel
92
93

 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
 8relocate_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
200:	/* 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
281:
29	/* Is it an indirection page */
30	tst	r3,#2,0
31	beq	1f
32	bic	r0,r3,#2
33	b	0b
341:
35
36	/* are we done ? */
37	tst	r3,#4,0
38	beq	1f
39	b	2f
40
411:
42	/* is it source ? */
43	tst	r3,#8,0
44	beq	0b
45	bic r3,r3,#8
46	mov r6,#1024
479:
48	ldr r5,[r3],#4
49	str r5,[r4],#4
50	subs r6,r6,#1
51	bne 9b
52	b 0b
53
542:
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 ARM(	mov pc, lr	)
61 THUMB(	bx lr		)
62
63	.align
64
65	.globl kexec_start_address
66kexec_start_address:
67	.long	0x0
68
69	.globl kexec_indirection_page
70kexec_indirection_page:
71	.long	0x0
72
73	.globl kexec_mach_type
74kexec_mach_type:
75	.long	0x0
76
77	/* phy addr of the atags for the new kernel */
78	.globl kexec_boot_atags
79kexec_boot_atags:
80	.long	0x0
 
 
81
82relocate_new_kernel_end:
83
84	.globl relocate_new_kernel_size
85relocate_new_kernel_size:
86	.long relocate_new_kernel_end - relocate_new_kernel
87
88