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>
13 # Issue "store status" for the current CPU to its prefix page
14 # and call passed function afterwards
16 # r2 = Function to be called after store status
17 # r3 = Parameter for function
20 /* Save register one and load save area base */
21 stg %r1,__LC_SAVE_AREA_RESTART
22 /* General purpose registers */
23 lghi %r1,__LC_GPREGS_SAVE_AREA
25 mvc 8(8,%r1),__LC_SAVE_AREA_RESTART
26 /* Control registers */
27 lghi %r1,__LC_CREGS_SAVE_AREA
29 /* Access registers */
30 lghi %r1,__LC_AREGS_SAVE_AREA
32 /* Floating point registers */
33 lghi %r1,__LC_FPREGS_SAVE_AREA
50 /* Floating point control register */
51 lghi %r1,__LC_FP_CREG_SAVE_AREA
54 lghi %r1,__LC_CPU_TIMER_SAVE_AREA
56 /* Store prefix register */
57 lghi %r1,__LC_PREFIX_SAVE_AREA
59 /* Clock comparator - seven bytes */
60 lghi %r1,__LC_CLOCK_COMP_SAVE_AREA
64 /* Program status word */
65 lghi %r1,__LC_PSW_SAVE_AREA
76 .Lclkcmp: .quad 0x0000000000000000
81 # Parameter: r2 = schid of reipl device
86 .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
89 brasl %r14,store_status
91 .Lstatus: lctlg %c6,%c6,.Lall-.Lpg0(%r13)
93 mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
94 stsch .Lschib-.Lpg0(%r13)
95 oi .Lschib+5-.Lpg0(%r13),0x84
96 .Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
97 msch .Lschib-.Lpg0(%r13)
99 .Lssch: ssch .Liplorb-.Lpg0(%r13)
102 bas %r14,.Ldisab-.Lpg0(%r13)
103 .L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
104 .Ltpi: lpswe .Lwaitpsw-.Lpg0(%r13)
105 .Lcont: c %r1,__LC_SUBCHANNEL_ID
107 clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
109 tsch .Liplirb-.Lpg0(%r13)
110 tm .Liplirb+9-.Lpg0(%r13),0xbf
112 bas %r14,.Ldisab-.Lpg0(%r13)
113 .L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
115 bas %r14,.Ldisab-.Lpg0(%r13)
116 .L003: st %r1,__LC_SUBCHANNEL_ID
117 lhi %r1,0 # mode 0 = esa
118 slr %r0,%r0 # set cpuid to zero
119 sigp %r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
122 srl %r14,1 # need to kill hi bit to avoid specification exceptions.
123 st %r14,.Ldispsw+12-.Lpg0(%r13)
124 lpswe .Ldispsw-.Lpg0(%r13)
126 .Lall: .quad 0x00000000ff000000
129 * These addresses have to be 31 bit otherwise
130 * the sigp will throw a specifcation exception
131 * when switching to ESA mode as bit 31 be set
133 * Bit 31 of the addresses has to be 0 for the
134 * 31bit lpswe instruction a fact they appear to have
135 * omitted from the pop.
137 .Lnewpsw: .quad 0x0000000080000000
139 .Lpcnew: .quad 0x0000000080000000
141 .Lionew: .quad 0x0000000080000000
143 .Lwaitpsw: .quad 0x0202000080000000
145 .Ldispsw: .quad 0x0002000080000000
146 .quad 0x0000000000000000
147 .Liplccws: .long 0x02000000,0x60000018
148 .long 0x08000008,0x20000001
149 .Liplorb: .long 0x0049504c,0x0040ff80
150 .long 0x00000000+.Liplccws
151 .Lschib: .long 0x00000000,0x00000000
152 .long 0x00000000,0x00000000
153 .long 0x00000000,0x00000000
154 .long 0x00000000,0x00000000
155 .long 0x00000000,0x00000000
156 .long 0x00000000,0x00000000
157 .Liplirb: .long 0x00000000,0x00000000
158 .long 0x00000000,0x00000000
159 .long 0x00000000,0x00000000
160 .long 0x00000000,0x00000000
161 .long 0x00000000,0x00000000
162 .long 0x00000000,0x00000000
163 .long 0x00000000,0x00000000
164 .long 0x00000000,0x00000000