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 <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