1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright IBM Corp. 1999, 2010
 4 *
 5 *   Author(s):	Hartmut Penner <hp@de.ibm.com>
 6 *		Martin Schwidefsky <schwidefsky@de.ibm.com>
 7 *		Rob van der Heij <rvdhei@iae.nl>
 8 *		Heiko Carstens <heiko.carstens@de.ibm.com>
 9 *
10 */
11
12#include <linux/init.h>
13#include <linux/linkage.h>
14#include <asm/asm-offsets.h>
15#include <asm/thread_info.h>
16#include <asm/page.h>
17#include <asm/ptrace.h>
18
19__HEAD
20ENTRY(startup_continue)
21	tm	__LC_STFLE_FAC_LIST+5,0x80	# LPP available ?
22	jz	0f
23	xc	__LC_LPP+1(7,0),__LC_LPP+1	# clear lpp and current_pid
24	mvi	__LC_LPP,0x80			#   and set LPP_MAGIC
25	.insn	s,0xb2800000,__LC_LPP		# load program parameter
260:	larl	%r1,tod_clock_base
27	mvc	0(16,%r1),__LC_BOOT_CLOCK
28	larl	%r13,.LPG1		# get base
29	larl	%r0,boot_vdso_data
30	stg	%r0,__LC_VDSO_PER_CPU
31#
32# Setup stack
33#
34	larl	%r14,init_task
35	stg	%r14,__LC_CURRENT
36	larl	%r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
37#ifdef CONFIG_KASAN
38	brasl	%r14,kasan_early_init
39#endif
40#
41# Early machine initialization and detection functions.
42#
43	brasl	%r14,startup_init
44
45# check control registers
46	stctg	%c0,%c15,0(%r15)
47	oi	6(%r15),0x60		# enable sigp emergency & external call
48	oi	4(%r15),0x10		# switch on low address proctection
49	lctlg	%c0,%c15,0(%r15)
50
51	lam	0,15,.Laregs-.LPG1(%r13)	# load acrs needed by uaccess
52	brasl	%r14,start_kernel		# go to C code
53#
54# We returned from start_kernel ?!? PANIK
55#
56	basr	%r13,0
57	lpswe	.Ldw-.(%r13)		# load disabled wait psw
58
59	.align	16
60.LPG1:
61.Ldw:	.quad	0x0002000180000000,0x0000000000000000
62.Laregs:.long	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright IBM Corp. 1999, 2010
 4 *
 5 *   Author(s):	Hartmut Penner <hp@de.ibm.com>
 6 *		Martin Schwidefsky <schwidefsky@de.ibm.com>
 7 *		Rob van der Heij <rvdhei@iae.nl>
 8 *		Heiko Carstens <heiko.carstens@de.ibm.com>
 9 *
10 */
11
12#include <linux/init.h>
13#include <linux/linkage.h>
14#include <asm/asm-offsets.h>
15#include <asm/thread_info.h>
16#include <asm/page.h>
17#include <asm/ptrace.h>
18
19__HEAD
20ENTRY(startup_continue)
21	tm	__LC_STFLE_FAC_LIST+5,0x80	# LPP available ?
22	jz	0f
23	xc	__LC_LPP+1(7,0),__LC_LPP+1	# clear lpp and current_pid
24	mvi	__LC_LPP,0x80			#   and set LPP_MAGIC
25	.insn	s,0xb2800000,__LC_LPP		# load program parameter
260:	larl	%r1,tod_clock_base
27	mvc	0(16,%r1),__LC_BOOT_CLOCK
28	larl	%r13,.LPG1		# get base
 
 
29#
30# Setup stack
31#
32	larl	%r14,init_task
33	stg	%r14,__LC_CURRENT
34	larl	%r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD-__PT_SIZE
35#ifdef CONFIG_KASAN
36	brasl	%r14,kasan_early_init
37#endif
38	brasl	%r14,startup_init		# s390 specific early init
39	brasl	%r14,start_kernel		# common init code
 
 
 
 
 
 
 
 
 
 
 
40#
41# We returned from start_kernel ?!? PANIK
42#
43	basr	%r13,0
44	lpswe	.Ldw-.(%r13)		# load disabled wait psw
45
46	.align	16
47.LPG1:
48.Ldw:	.quad	0x0002000180000000,0x0000000000000000