1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright IBM Corp 2000, 2011
4 * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
8 #include <linux/linkage.h>
9 #include <asm/asm-offsets.h>
10 #include <asm/nospec-insn.h>
16 # Issue "store status" for the current CPU to its prefix page
17 # and call passed function afterwards
19 # r2 = Function to be called after store status
20 # r3 = Parameter for function
23 /* Save register one and load save area base */
24 stg %r1,__LC_SAVE_AREA_RESTART
25 /* General purpose registers */
26 lghi %r1,__LC_GPREGS_SAVE_AREA
28 mvc 8(8,%r1),__LC_SAVE_AREA_RESTART
29 /* Control registers */
30 lghi %r1,__LC_CREGS_SAVE_AREA
32 /* Access registers */
33 lghi %r1,__LC_AREGS_SAVE_AREA
35 /* Floating point registers */
36 lghi %r1,__LC_FPREGS_SAVE_AREA
53 /* Floating point control register */
54 lghi %r1,__LC_FP_CREG_SAVE_AREA
57 lghi %r1,__LC_CPU_TIMER_SAVE_AREA
59 /* Store prefix register */
60 lghi %r1,__LC_PREFIX_SAVE_AREA
62 /* Clock comparator - seven bytes */
63 lghi %r1,__LC_CLOCK_COMP_SAVE_AREA
67 /* Program status word */
68 lghi %r1,__LC_PSW_SAVE_AREA
79 .Lclkcmp: .quad 0x0000000000000000
84 # Parameter: r2 = schid of reipl device
89 .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
92 brasl %r14,store_status
94 .Lstatus: lctlg %c6,%c6,.Lall-.Lpg0(%r13)
96 mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
97 stsch .Lschib-.Lpg0(%r13)
98 oi .Lschib+5-.Lpg0(%r13),0x84
99 .Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
100 msch .Lschib-.Lpg0(%r13)
102 .Lssch: ssch .Liplorb-.Lpg0(%r13)
105 bas %r14,.Ldisab-.Lpg0(%r13)
106 .L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
107 .Ltpi: lpswe .Lwaitpsw-.Lpg0(%r13)
108 .Lcont: c %r1,__LC_SUBCHANNEL_ID
110 clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
112 tsch .Liplirb-.Lpg0(%r13)
113 tm .Liplirb+9-.Lpg0(%r13),0xbf
115 bas %r14,.Ldisab-.Lpg0(%r13)
116 .L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
118 bas %r14,.Ldisab-.Lpg0(%r13)
119 .L003: st %r1,__LC_SUBCHANNEL_ID
120 lhi %r1,0 # mode 0 = esa
121 slr %r0,%r0 # set cpuid to zero
122 sigp %r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
125 srl %r14,1 # need to kill hi bit to avoid specification exceptions.
126 st %r14,.Ldispsw+12-.Lpg0(%r13)
127 lpswe .Ldispsw-.Lpg0(%r13)
129 .Lall: .quad 0x00000000ff000000
132 * These addresses have to be 31 bit otherwise
133 * the sigp will throw a specifcation exception
134 * when switching to ESA mode as bit 31 be set
136 * Bit 31 of the addresses has to be 0 for the
137 * 31bit lpswe instruction a fact they appear to have
138 * omitted from the pop.
140 .Lnewpsw: .quad 0x0000000080000000
142 .Lpcnew: .quad 0x0000000080000000
144 .Lionew: .quad 0x0000000080000000
146 .Lwaitpsw: .quad 0x0202000080000000
148 .Ldispsw: .quad 0x0002000080000000
149 .quad 0x0000000000000000
150 .Liplccws: .long 0x02000000,0x60000018
151 .long 0x08000008,0x20000001
152 .Liplorb: .long 0x0049504c,0x0040ff80
153 .long 0x00000000+.Liplccws
154 .Lschib: .long 0x00000000,0x00000000
155 .long 0x00000000,0x00000000
156 .long 0x00000000,0x00000000
157 .long 0x00000000,0x00000000
158 .long 0x00000000,0x00000000
159 .long 0x00000000,0x00000000
160 .Liplirb: .long 0x00000000,0x00000000
161 .long 0x00000000,0x00000000
162 .long 0x00000000,0x00000000
163 .long 0x00000000,0x00000000
164 .long 0x00000000,0x00000000
165 .long 0x00000000,0x00000000
166 .long 0x00000000,0x00000000
167 .long 0x00000000,0x00000000