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

... / ...

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	0: /* top, read another word for the indirection page */
	15	ldr r3, [r0],#4
	16
	17	/* Is it a destination page. Put destination address to r4 */
	18	tst r3,#1,0
	19	beq 1f
	20	bic r4,r3,#1
	21	b 0b
	22	1:
	23	/* Is it an indirection page */
	24	tst r3,#2,0
	25	beq 1f
	26	bic r0,r3,#2
	27	b 0b
	28	1:
	29
	30	/* are we done ? */
	31	tst r3,#4,0
	32	beq 1f
	33	b 2f
	34
	35	1:
	36	/* is it source ? */
	37	tst r3,#8,0
	38	beq 0b
	39	bic r3,r3,#8
	40	mov r6,#1024
	41	9:
	42	ldr r5,[r3],#4
	43	str r5,[r4],#4
	44	subs r6,r6,#1
	45	bne 9b
	46	b 0b
	47
	48	2:
	49	/* Jump to relocated kernel */
	50	mov lr,r1
	51	mov r0,#0
	52	ldr r1,kexec_mach_type
	53	ldr r2,kexec_boot_atags
	54	mov pc,lr
	55
	56	.globl kexec_start_address
	57	kexec_start_address:
	58	.long 0x0
	59
	60	.globl kexec_indirection_page
	61	kexec_indirection_page:
	62	.long 0x0
	63
	64	.globl kexec_mach_type
	65	kexec_mach_type:
	66	.long 0x0
	67
	68	/* phy addr of the atags for the new kernel */
	69	.globl kexec_boot_atags
	70	kexec_boot_atags:
	71	.long 0x0
	72
	73	relocate_new_kernel_end:
	74
	75	.globl relocate_new_kernel_size
	76	relocate_new_kernel_size:
	77	.long relocate_new_kernel_end - relocate_new_kernel
	78
	79