/*
* 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>
.globl do_reipl
do_reipl: basr %r13,0
.Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
.Lpg1: lctlg %c6,%c6,.Lall-.Lpg0(%r13)
stctg %c0,%c0,.Lctlsave-.Lpg0(%r13)
ni .Lctlsave+4-.Lpg0(%r13),0xef
lctlg %c0,%c0,.Lctlsave-.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: spx .Lnull-.Lpg0(%r13)
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
.Lall: .quad 0x00000000ff000000
.Lctlsave: .quad 0x0000000000000000
.Lnull: .long 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
