android_kernel_xiaomi_sm8350/arch/s390/kernel/reipl.S
Michael Holzheu da1cf23efe [S390] Save prefix register for dump on panic
The dump tools expect that the saved prefix register points to the
lowcore of the dump cpu. Since we set the prefix register to 0 during
reipl/dump, we have to save the original prefix register. Before we
start the dump program, we copy the original prefix register to the
designated location in the lowcore.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-12-15 17:18:27 +01:00

86 lines
2.4 KiB
ArmAsm

/*
* arch/s390/kernel/reipl.S
*
* S390 version
* Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
*/
#include <asm/lowcore.h>
.globl do_reipl_asm
do_reipl_asm: basr %r13,0
.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13)
.Lpg1: # do store status of all registers
stm %r0,%r15,__LC_GPREGS_SAVE_AREA
stctl %c0,%c15,__LC_CREGS_SAVE_AREA
stam %a0,%a15,__LC_AREGS_SAVE_AREA
mvc __LC_PREFIX_SAVE_AREA(4),dump_prefix_page-.Lpg0(%r13)
stckc .Lclkcmp-.Lpg0(%r13)
mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
stpt __LC_CPU_TIMER_SAVE_AREA
st %r13, __LC_PSW_SAVE_AREA+4
lctl %c6,%c6,.Lall-.Lpg0(%r13)
lr %r1,%r2
mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
stsch .Lschib-.Lpg0(%r13)
oi .Lschib+5-.Lpg0(%r13),0x84
.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
msch .Lschib-.Lpg0(%r13)
lhi %r0,5
.Lssch: ssch .Liplorb-.Lpg0(%r13)
jz .L001
brct %r0,.Lssch
bas %r14,.Ldisab-.Lpg0(%r13)
.L001: mvc __LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13)
.Ltpi: lpsw .Lwaitpsw-.Lpg0(%r13)
.Lcont: c %r1,__LC_SUBCHANNEL_ID
jnz .Ltpi
clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
jnz .Ltpi
tsch .Liplirb-.Lpg0(%r13)
tm .Liplirb+9-.Lpg0(%r13),0xbf
jz .L002
bas %r14,.Ldisab-.Lpg0(%r13)
.L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
jz .L003
bas %r14,.Ldisab-.Lpg0(%r13)
.L003: st %r1,__LC_SUBCHANNEL_ID
lpsw 0
sigp 0,0,0(6)
.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13)
lpsw .Ldispsw-.Lpg0(%r13)
.align 8
.Lclkcmp: .quad 0x0000000000000000
.Lall: .long 0xff000000
.align 8
.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1
.Lpcnew: .long 0x00080000,0x80000000+.Lecs
.Lionew: .long 0x00080000,0x80000000+.Lcont
.Lwaitpsw: .long 0x020a0000,0x00000000+.Ltpi
.Ldispsw: .long 0x000a0000,0x00000000
.Liplccws: .long 0x02000000,0x60000018
.long 0x08000008,0x20000001
.Liplorb: .long 0x0049504c,0x0040ff80
.long 0x00000000+.Liplccws
.Lschib: .long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.Liplirb: .long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.globl dump_prefix_page
dump_prefix_page:
.long 0x00000000