c5dd858670
Reipl doesn't work on older machines were s390_reset_machine() gets called. The reason is that the text section is read-only but the variable dump_prefix_page is there. Since s390_reset_machine() writes to it we get a protection exception. Therefore move dump_prefix_page to the bss section. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
113 lines
3.3 KiB
ArmAsm
113 lines
3.3 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)
|
|
Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
|
|
*/
|
|
|
|
#include <asm/lowcore.h>
|
|
|
|
#
|
|
# do_reipl_asm
|
|
# Parameter: r2 = schid of reipl device
|
|
#
|
|
|
|
.globl do_reipl_asm
|
|
do_reipl_asm: basr %r13,0
|
|
.Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
|
|
.Lpg1: # do store status of all registers
|
|
|
|
stg %r1,.Lregsave-.Lpg0(%r13)
|
|
lghi %r1,0x1000
|
|
stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-0x1000(%r1)
|
|
lg %r0,.Lregsave-.Lpg0(%r13)
|
|
stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
|
|
stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
|
|
stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
|
|
lg %r10,.Ldump_pfx-.Lpg0(%r13)
|
|
mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),0(%r10)
|
|
stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1)
|
|
stckc .Lclkcmp-.Lpg0(%r13)
|
|
mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
|
|
stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1)
|
|
stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1)
|
|
|
|
lctlg %c6,%c6,.Lall-.Lpg0(%r13)
|
|
lgr %r1,%r2
|
|
mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
|
|
stsch .Lschib-.Lpg0(%r13)
|
|
oi .Lschib+5-.Lpg0(%r13),0x84
|
|
.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
|
|
msch .Lschib-.Lpg0(%r13)
|
|
lghi %r0,5
|
|
.Lssch: ssch .Liplorb-.Lpg0(%r13)
|
|
jz .L001
|
|
brct %r0,.Lssch
|
|
bas %r14,.Ldisab-.Lpg0(%r13)
|
|
.L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
|
|
.Ltpi: lpswe .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
|
|
lhi %r1,0 # mode 0 = esa
|
|
slr %r0,%r0 # set cpuid to zero
|
|
sigp %r1,%r0,0x12 # switch to esa mode
|
|
lpsw 0
|
|
.Ldisab: sll %r14,1
|
|
srl %r14,1 # need to kill hi bit to avoid specification exceptions.
|
|
st %r14,.Ldispsw+12-.Lpg0(%r13)
|
|
lpswe .Ldispsw-.Lpg0(%r13)
|
|
.align 8
|
|
.Lclkcmp: .quad 0x0000000000000000
|
|
.Lall: .quad 0x00000000ff000000
|
|
.Ldump_pfx: .quad dump_prefix_page
|
|
.Lregsave: .quad 0x0000000000000000
|
|
.align 16
|
|
/*
|
|
* These addresses have to be 31 bit otherwise
|
|
* the sigp will throw a specifcation exception
|
|
* when switching to ESA mode as bit 31 be set
|
|
* in the ESA psw.
|
|
* Bit 31 of the addresses has to be 0 for the
|
|
* 31bit lpswe instruction a fact they appear to have
|
|
* ommited from the pop.
|
|
*/
|
|
.Lnewpsw: .quad 0x0000000080000000
|
|
.quad .Lpg1
|
|
.Lpcnew: .quad 0x0000000080000000
|
|
.quad .Lecs
|
|
.Lionew: .quad 0x0000000080000000
|
|
.quad .Lcont
|
|
.Lwaitpsw: .quad 0x0202000080000000
|
|
.quad .Ltpi
|
|
.Ldispsw: .quad 0x0002000080000000
|
|
.quad 0x0000000000000000
|
|
.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
|