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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright IBM Corp 2000, 2011
4 * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
5 * Denis Joseph Barrow,
6 */
7
8#include <linux/linkage.h>
9#include <asm/asm-offsets.h>
10#include <asm/nospec-insn.h>
11#include <asm/sigp.h>
12#include <asm/lowcore.h>
13
14 GEN_BR_THUNK %r9
15
16#
17# Issue "store status" for the current CPU to its prefix page
18# and call passed function afterwards
19#
20# r2 = Function to be called after store status
21# r3 = Parameter for function
22#
23SYM_CODE_START(store_status)
24 STMG_LC %r0,%r15,__LC_GPREGS_SAVE_AREA
25 /* General purpose registers */
26 GET_LC %r13
27 /* Control registers */
28 stctg %c0,%c15,__LC_CREGS_SAVE_AREA(%r13)
29 /* Access registers */
30 stamy %a0,%a15,__LC_AREGS_SAVE_AREA(%r13)
31 /* Floating point registers */
32 lay %r1,__LC_FPREGS_SAVE_AREA(%r13)
33 std %f0, 0x00(%r1)
34 std %f1, 0x08(%r1)
35 std %f2, 0x10(%r1)
36 std %f3, 0x18(%r1)
37 std %f4, 0x20(%r1)
38 std %f5, 0x28(%r1)
39 std %f6, 0x30(%r1)
40 std %f7, 0x38(%r1)
41 std %f8, 0x40(%r1)
42 std %f9, 0x48(%r1)
43 std %f10,0x50(%r1)
44 std %f11,0x58(%r1)
45 std %f12,0x60(%r1)
46 std %f13,0x68(%r1)
47 std %f14,0x70(%r1)
48 std %f15,0x78(%r1)
49 /* Floating point control register */
50 lay %r1,__LC_FP_CREG_SAVE_AREA(%r13)
51 stfpc 0(%r1)
52 /* CPU timer */
53 lay %r1,__LC_CPU_TIMER_SAVE_AREA(%r13)
54 stpt 0(%r1)
55 /* Store prefix register */
56 lay %r1,__LC_PREFIX_SAVE_AREA(%r13)
57 stpx 0(%r1)
58 /* Clock comparator - seven bytes */
59 larl %r4,clkcmp
60 stckc 0(%r4)
61 lay %r1,__LC_CLOCK_COMP_SAVE_AREA(%r13)
62 mvc 1(7,%r1),1(%r4)
63 /* Program status word */
64 lay %r1,__LC_PSW_SAVE_AREA(%r13)
65 epsw %r4,%r5
66 st %r4,0(%r1)
67 st %r5,4(%r1)
68 stg %r2,8(%r1)
69 lgr %r9,%r2
70 lgr %r2,%r3
71 BR_EX %r9
72SYM_CODE_END(store_status)
73
74 .section .bss
75 .balign 8
76SYM_DATA_LOCAL(clkcmp, .quad 0x0000000000000000)
77 .previous
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 <linux/linkage.h>
10#include <asm/asm-offsets.h>
11
12#
13# do_reipl_asm
14# Parameter: r2 = schid of reipl device
15#
16ENTRY(do_reipl_asm)
17 basr %r13,0
18.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13)
19.Lpg1: # do store status of all registers
20
21 stm %r0,%r15,__LC_GPREGS_SAVE_AREA
22 stctl %c0,%c15,__LC_CREGS_SAVE_AREA
23 stam %a0,%a15,__LC_AREGS_SAVE_AREA
24 l %r10,.Ldump_pfx-.Lpg0(%r13)
25 mvc __LC_PREFIX_SAVE_AREA(4),0(%r10)
26 stckc .Lclkcmp-.Lpg0(%r13)
27 mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
28 stpt __LC_CPU_TIMER_SAVE_AREA
29 st %r13, __LC_PSW_SAVE_AREA+4
30 lctl %c6,%c6,.Lall-.Lpg0(%r13)
31 lr %r1,%r2
32 mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
33 stsch .Lschib-.Lpg0(%r13)
34 oi .Lschib+5-.Lpg0(%r13),0x84
35.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
36 msch .Lschib-.Lpg0(%r13)
37 lhi %r0,5
38.Lssch: ssch .Liplorb-.Lpg0(%r13)
39 jz .L001
40 brct %r0,.Lssch
41 bas %r14,.Ldisab-.Lpg0(%r13)
42.L001: mvc __LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13)
43.Ltpi: lpsw .Lwaitpsw-.Lpg0(%r13)
44.Lcont: c %r1,__LC_SUBCHANNEL_ID
45 jnz .Ltpi
46 clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
47 jnz .Ltpi
48 tsch .Liplirb-.Lpg0(%r13)
49 tm .Liplirb+9-.Lpg0(%r13),0xbf
50 jz .L002
51 bas %r14,.Ldisab-.Lpg0(%r13)
52.L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
53 jz .L003
54 bas %r14,.Ldisab-.Lpg0(%r13)
55.L003: st %r1,__LC_SUBCHANNEL_ID
56 lpsw 0
57 sigp 0,0,0(6)
58.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13)
59 lpsw .Ldispsw-.Lpg0(%r13)
60 .align 8
61.Lclkcmp: .quad 0x0000000000000000
62.Lall: .long 0xff000000
63.Ldump_pfx: .long dump_prefix_page
64 .align 8
65.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1
66.Lpcnew: .long 0x00080000,0x80000000+.Lecs
67.Lionew: .long 0x00080000,0x80000000+.Lcont
68.Lwaitpsw: .long 0x020a0000,0x00000000+.Ltpi
69.Ldispsw: .long 0x000a0000,0x00000000
70.Liplccws: .long 0x02000000,0x60000018
71 .long 0x08000008,0x20000001
72.Liplorb: .long 0x0049504c,0x0040ff80
73 .long 0x00000000+.Liplccws
74.Lschib: .long 0x00000000,0x00000000
75 .long 0x00000000,0x00000000
76 .long 0x00000000,0x00000000
77 .long 0x00000000,0x00000000
78 .long 0x00000000,0x00000000
79 .long 0x00000000,0x00000000
80.Liplirb: .long 0x00000000,0x00000000
81 .long 0x00000000,0x00000000
82 .long 0x00000000,0x00000000
83 .long 0x00000000,0x00000000
84 .long 0x00000000,0x00000000
85 .long 0x00000000,0x00000000
86 .long 0x00000000,0x00000000
87 .long 0x00000000,0x00000000