1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright IBM Corp. 1999, 2010
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>
12 #include <linux/init.h>
13 #include <linux/linkage.h>
14 #include <asm/asm-offsets.h>
15 #include <asm/thread_info.h>
17 #include <asm/ptrace.h>
20 ENTRY(startup_continue)
21 tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ?
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
26 0: 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
36 larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
38 brasl %r14,kasan_early_init
41 # Early machine initialization and detection functions.
43 brasl %r14,startup_init
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)
51 lam 0,15,.Laregs-.LPG1(%r13) # load acrs needed by uaccess
52 brasl %r14,start_kernel # go to C code
54 # We returned from start_kernel ?!? PANIK
57 lpswe .Ldw-.(%r13) # load disabled wait psw
61 .Ldw: .quad 0x0002000180000000,0x0000000000000000
62 .Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0