arch/s390/kernel/head64.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright IBM Corp. 1999, 2010
   4  *
   5  *   Author(s): Hartmut Penner <[email protected]>
   6  *              Martin Schwidefsky <[email protected]>
   7  *              Rob van der Heij <[email protected]>
   8  *
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/linkage.h>
  13 #include <asm/asm-offsets.h>
  14 #include <asm/thread_info.h>
  15 #include <asm/page.h>
  16 #include <asm/ptrace.h>
  17
  18 __HEAD
  19 ENTRY(startup_continue)
  20         larl    %r1,tod_clock_base
  21         mvc     0(16,%r1),__LC_BOOT_CLOCK
  22 #
  23 # Setup stack
  24 #
  25         larl    %r14,init_task
  26         stg     %r14,__LC_CURRENT
  27         larl    %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD-__PT_SIZE
  28 #ifdef CONFIG_KASAN
  29         brasl   %r14,kasan_early_init
  30 #endif
  31         brasl   %r14,startup_init               # s390 specific early init
  32         brasl   %r14,start_kernel               # common init code
  33 #
  34 # We returned from start_kernel ?!? PANIK
  35 #
  36         basr    %r13,0
  37         lpswe   .Ldw-.(%r13)            # load disabled wait psw
  38
  39         .align  16
  40 .LPG1:
  41 .Ldw:   .quad   0x0002000180000000,0x0000000000000000