1/*
2 * Startup glue code to uncompress the kernel
3 *
4 * Copyright IBM Corp. 2010
5 *
6 *   Author(s):	Martin Schwidefsky <schwidefsky@de.ibm.com>
7 */
8
9#include <linux/init.h>
10#include <linux/linkage.h>
11#include <asm/asm-offsets.h>
12#include <asm/thread_info.h>
13#include <asm/page.h>
14#include "sizes.h"
15
16__HEAD
17ENTRY(startup_continue)
18	basr	%r13,0			# get base
19.LPG1:
20	# setup stack
21	lg	%r15,.Lstack-.LPG1(%r13)
22	aghi	%r15,-160
23	brasl	%r14,decompress_kernel
24	# setup registers for memory mover & branch to target
25	lgr	%r4,%r2
26	lg	%r2,.Loffset-.LPG1(%r13)
27	la	%r4,0(%r2,%r4)
28	lg	%r3,.Lmvsize-.LPG1(%r13)
29	lgr	%r5,%r3
30	# move the memory mover someplace safe
31	la	%r1,0x200
32	mvc	0(mover_end-mover,%r1),mover-.LPG1(%r13)
33	# decompress image is started at 0x11000
34	lgr	%r6,%r2
35	br	%r1
36mover:
37	mvcle	%r2,%r4,0
38	jo	mover
39	br	%r6
40mover_end:
41
42	.align	8
43.Lstack:
44	.quad	0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
45.Loffset:
46	.quad	0x11000
47.Lmvsize:
48	.quad	SZ__bss_start
49