s390/kernel/head64.S

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright IBM Corp. 1999, 2010
0004  *
0005  *   Author(s): Hartmut Penner <hp@de.ibm.com>
0006  *      Martin Schwidefsky <schwidefsky@de.ibm.com>
0007  *      Rob van der Heij <rvdhei@iae.nl>
0008  *
0009  */
0010
0011 #include <linux/init.h>
0012 #include <linux/linkage.h>
0013 #include <asm/asm-offsets.h>
0014 #include <asm/thread_info.h>
0015 #include <asm/page.h>
0016 #include <asm/ptrace.h>
0017
0018 __HEAD
0019 ENTRY(startup_continue)
0020     larl    %r1,tod_clock_base
0021     mvc 0(16,%r1),__LC_BOOT_CLOCK
0022 #
0023 # Setup stack
0024 #
0025     larl    %r14,init_task
0026     stg %r14,__LC_CURRENT
0027     larl    %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD-__PT_SIZE
0028 #ifdef CONFIG_KASAN
0029     brasl   %r14,kasan_early_init
0030 #endif
0031     brasl   %r14,startup_init       # s390 specific early init
0032     brasl   %r14,start_kernel       # common init code
0033 #
0034 # We returned from start_kernel ?!? PANIK
0035 #
0036     basr    %r13,0
0037     lpswe   .Ldw-.(%r13)        # load disabled wait psw
0038
0039     .align  16
0040 .LPG1:
0041 .Ldw:   .quad   0x0002000180000000,0x0000000000000000