1/*
 2 * relocate_kernel.S - put the kernel image in place to boot
 3 */
 4
 5#include <linux/linkage.h>
 6#include <asm/kexec.h>
 7
 8	.align	3	/* not needed for this code, but keeps fncpy() happy */
 9
10ENTRY(relocate_new_kernel)
11
12	ldr	r0,kexec_indirection_page
13	ldr	r1,kexec_start_address
14
15	/*
16	 * If there is no indirection page (we are doing crashdumps)
17	 * skip any relocation.
18	 */
19	cmp	r0, #0
20	beq	2f
21
220:	/* top, read another word for the indirection page */
23	ldr	r3, [r0],#4
24
25	/* Is it a destination page. Put destination address to r4 */
26	tst	r3,#1,0
27	beq	1f
28	bic	r4,r3,#1
29	b	0b
301:
31	/* Is it an indirection page */
32	tst	r3,#2,0
33	beq	1f
34	bic	r0,r3,#2
35	b	0b
361:
37
38	/* are we done ? */
39	tst	r3,#4,0
40	beq	1f
41	b	2f
42
431:
44	/* is it source ? */
45	tst	r3,#8,0
46	beq	0b
47	bic r3,r3,#8
48	mov r6,#1024
499:
50	ldr r5,[r3],#4
51	str r5,[r4],#4
52	subs r6,r6,#1
53	bne 9b
54	b 0b
55
562:
57	/* Jump to relocated kernel */
58	mov lr,r1
59	mov r0,#0
60	ldr r1,kexec_mach_type
61	ldr r2,kexec_boot_atags
62 ARM(	mov pc, lr	)
63 THUMB(	bx lr		)
64
65	.align
66
67	.globl kexec_start_address
68kexec_start_address:
69	.long	0x0
70
71	.globl kexec_indirection_page
72kexec_indirection_page:
73	.long	0x0
74
75	.globl kexec_mach_type
76kexec_mach_type:
77	.long	0x0
78
79	/* phy addr of the atags for the new kernel */
80	.globl kexec_boot_atags
81kexec_boot_atags:
82	.long	0x0
83
84ENDPROC(relocate_new_kernel)
85
86relocate_new_kernel_end:
87
88	.globl relocate_new_kernel_size
89relocate_new_kernel_size:
90	.long relocate_new_kernel_end - relocate_new_kernel
91
92

 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