63 lines
1.5 KiB
ArmAsm
63 lines
1.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright IBM Corp. 1999, 2010
|
|
*
|
|
* Author(s): Hartmut Penner <hp@de.ibm.com>
|
|
* Martin Schwidefsky <schwidefsky@de.ibm.com>
|
|
* Rob van der Heij <rvdhei@iae.nl>
|
|
* Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/thread_info.h>
|
|
#include <asm/page.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
__HEAD
|
|
ENTRY(startup_continue)
|
|
tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ?
|
|
jz 0f
|
|
xc __LC_LPP+1(7,0),__LC_LPP+1 # clear lpp and current_pid
|
|
mvi __LC_LPP,0x80 # and set LPP_MAGIC
|
|
.insn s,0xb2800000,__LC_LPP # load program parameter
|
|
0: larl %r1,tod_clock_base
|
|
mvc 0(16,%r1),__LC_BOOT_CLOCK
|
|
larl %r13,.LPG1 # get base
|
|
larl %r0,boot_vdso_data
|
|
stg %r0,__LC_VDSO_PER_CPU
|
|
#
|
|
# Setup stack
|
|
#
|
|
larl %r14,init_task
|
|
stg %r14,__LC_CURRENT
|
|
larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
|
|
#ifdef CONFIG_KASAN
|
|
brasl %r14,kasan_early_init
|
|
#endif
|
|
#
|
|
# Early machine initialization and detection functions.
|
|
#
|
|
brasl %r14,startup_init
|
|
|
|
# check control registers
|
|
stctg %c0,%c15,0(%r15)
|
|
oi 6(%r15),0x60 # enable sigp emergency & external call
|
|
oi 4(%r15),0x10 # switch on low address proctection
|
|
lctlg %c0,%c15,0(%r15)
|
|
|
|
lam 0,15,.Laregs-.LPG1(%r13) # load acrs needed by uaccess
|
|
brasl %r14,start_kernel # go to C code
|
|
#
|
|
# We returned from start_kernel ?!? PANIK
|
|
#
|
|
basr %r13,0
|
|
lpswe .Ldw-.(%r13) # load disabled wait psw
|
|
|
|
.align 16
|
|
.LPG1:
|
|
.Ldw: .quad 0x0002000180000000,0x0000000000000000
|
|
.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|