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[S390] user readable uninitialised kernel memory.
[mirror_ubuntu-bionic-kernel.git] / arch / s390 / kernel / reipl.S
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1/*
2 * arch/s390/kernel/reipl.S
3 *
4 * S390 version
5 * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
7 */
8
9#include <asm/lowcore.h>
10
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11 .globl do_reipl_asm
12do_reipl_asm: basr %r13,0
1da177e4 13.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13)
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14
15 # switch off lowcore protection
16
17.Lpg1: stctl %c0,%c0,.Lctlsave1-.Lpg0(%r13)
18 stctl %c0,%c0,.Lctlsave2-.Lpg0(%r13)
19 ni .Lctlsave1-.Lpg0(%r13),0xef
20 lctl %c0,%c0,.Lctlsave1-.Lpg0(%r13)
21
22 # do store status of all registers
23
24 stm %r0,%r15,__LC_GPREGS_SAVE_AREA
25 stctl %c0,%c15,__LC_CREGS_SAVE_AREA
26 mvc __LC_CREGS_SAVE_AREA(4),.Lctlsave2-.Lpg0(%r13)
27 stam %a0,%a15,__LC_AREGS_SAVE_AREA
28 stpx __LC_PREFIX_SAVE_AREA
29 stckc .Lclkcmp-.Lpg0(%r13)
30 mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
31 stpt __LC_CPU_TIMER_SAVE_AREA
32 st %r13, __LC_PSW_SAVE_AREA+4
33
34 lctl %c6,%c6,.Lall-.Lpg0(%r13)
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35 lr %r1,%r2
36 mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
37 stsch .Lschib-.Lpg0(%r13)
38 oi .Lschib+5-.Lpg0(%r13),0x84
39.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
40 msch .Lschib-.Lpg0(%r13)
41 lhi %r0,5
42.Lssch: ssch .Liplorb-.Lpg0(%r13)
43 jz .L001
44 brct %r0,.Lssch
45 bas %r14,.Ldisab-.Lpg0(%r13)
46.L001: mvc __LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13)
47.Ltpi: lpsw .Lwaitpsw-.Lpg0(%r13)
48.Lcont: c %r1,__LC_SUBCHANNEL_ID
49 jnz .Ltpi
50 clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
51 jnz .Ltpi
52 tsch .Liplirb-.Lpg0(%r13)
53 tm .Liplirb+9-.Lpg0(%r13),0xbf
54 jz .L002
55 bas %r14,.Ldisab-.Lpg0(%r13)
56.L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
57 jz .L003
58 bas %r14,.Ldisab-.Lpg0(%r13)
59.L003: spx .Lnull-.Lpg0(%r13)
60 st %r1,__LC_SUBCHANNEL_ID
61 lpsw 0
62 sigp 0,0,0(6)
63.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13)
64 lpsw .Ldispsw-.Lpg0(%r13)
65 .align 8
ff6b8ea6 66.Lclkcmp: .quad 0x0000000000000000
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67.Lall: .long 0xff000000
68.Lnull: .long 0x00000000
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69.Lctlsave1: .long 0x00000000
70.Lctlsave2: .long 0x00000000
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71 .align 8
72.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1
73.Lpcnew: .long 0x00080000,0x80000000+.Lecs
74.Lionew: .long 0x00080000,0x80000000+.Lcont
75.Lwaitpsw: .long 0x020a0000,0x00000000+.Ltpi
76.Ldispsw: .long 0x000a0000,0x00000000
77.Liplccws: .long 0x02000000,0x60000018
78 .long 0x08000008,0x20000001
79.Liplorb: .long 0x0049504c,0x0040ff80
80 .long 0x00000000+.Liplccws
81.Lschib: .long 0x00000000,0x00000000
82 .long 0x00000000,0x00000000
83 .long 0x00000000,0x00000000
84 .long 0x00000000,0x00000000
85 .long 0x00000000,0x00000000
86 .long 0x00000000,0x00000000
87.Liplirb: .long 0x00000000,0x00000000
88 .long 0x00000000,0x00000000
89 .long 0x00000000,0x00000000
90 .long 0x00000000,0x00000000
91 .long 0x00000000,0x00000000
92 .long 0x00000000,0x00000000
93 .long 0x00000000,0x00000000
94 .long 0x00000000,0x00000000
95
96
97