Commit 39e8c5d6 authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390/head64: Make startup code ready for lowcore relocation 



In preparation of having lowcore at different address than zero,
add the base register to all lowcore accesses in startup_continue().

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 5ade5be4

arch/s390/kernel/head64.S

+5 −3
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/init.h>

#include <linux/linkage.h>

#include <asm/lowcore.h>

#include <asm/asm-offsets.h>

#include <asm/thread_info.h>

#include <asm/page.h>
@@ -18,14 +19,15 @@ 
__HEAD

SYM_CODE_START(startup_continue)

	larl	%r1,tod_clock_base

	mvc	0(16,%r1),__LC_BOOT_CLOCK

	GET_LC	%r2

	mvc	0(16,%r1),__LC_BOOT_CLOCK(%r2)

#

# Setup stack

#

	larl	%r14,init_task

	stg	%r14,__LC_CURRENT

	stg	%r14,__LC_CURRENT(%r2)

	larl	%r15,init_thread_union+STACK_INIT_OFFSET

	stg	%r15,__LC_KERNEL_STACK

	stg	%r15,__LC_KERNEL_STACK(%r2)

	brasl	%r14,sclp_early_adjust_va	# allow sclp_early_printk

	brasl	%r14,startup_init		# s390 specific early init

	brasl	%r14,start_kernel		# common init code