2 * Copyright IBM Corp 2000, 2011
3 * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
7 #include <linux/linkage.h>
8 #include <asm/asm-offsets.h>
14 # Prerequisites to run this function:
15 # - Prefix register is set to zero
16 # - Original prefix register is stored in "dump_prefix_page"
17 # - Lowcore protection is off
20 /* Save register one and load save area base */
21 stg %r1,__LC_SAVE_AREA_RESTART
22 lghi %r1,SAVE_AREA_BASE
23 /* General purpose registers */
24 stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
25 lg %r2,__LC_SAVE_AREA_RESTART
26 stg %r2,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE+8(%r1)
27 /* Control registers */
28 stctg %c0,%c15,__LC_CREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
29 /* Access registers */
30 stam %a0,%a15,__LC_AREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
31 /* Floating point registers */
32 std %f0, 0x00 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
33 std %f1, 0x08 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
34 std %f2, 0x10 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
35 std %f3, 0x18 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
36 std %f4, 0x20 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
37 std %f5, 0x28 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
38 std %f6, 0x30 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
39 std %f7, 0x38 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
40 std %f8, 0x40 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
41 std %f9, 0x48 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
42 std %f10,0x50 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
43 std %f11,0x58 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
44 std %f12,0x60 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
45 std %f13,0x68 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
46 std %f14,0x70 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
47 std %f15,0x78 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
48 /* Floating point control register */
49 stfpc __LC_FP_CREG_SAVE_AREA-SAVE_AREA_BASE(%r1)
51 stpt __LC_CPU_TIMER_SAVE_AREA-SAVE_AREA_BASE(%r1)
52 /* Saved prefix register */
53 larl %r2,dump_prefix_page
54 mvc __LC_PREFIX_SAVE_AREA-SAVE_AREA_BASE(4,%r1),0(%r2)
55 /* Clock comparator - seven bytes */
58 mvc __LC_CLOCK_COMP_SAVE_AREA-SAVE_AREA_BASE + 1(7,%r1),1(%r2)
59 /* Program status word */
61 st %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 0(%r1)
62 st %r3,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 4(%r1)
64 stg %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 8(%r1)
69 .Lclkcmp: .quad 0x0000000000000000
74 # Parameter: r2 = schid of reipl device
79 .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
80 .Lpg1: brasl %r14,store_status
82 lctlg %c6,%c6,.Lall-.Lpg0(%r13)
84 mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
85 stsch .Lschib-.Lpg0(%r13)
86 oi .Lschib+5-.Lpg0(%r13),0x84
87 .Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
88 msch .Lschib-.Lpg0(%r13)
90 .Lssch: ssch .Liplorb-.Lpg0(%r13)
93 bas %r14,.Ldisab-.Lpg0(%r13)
94 .L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13)
95 .Ltpi: lpswe .Lwaitpsw-.Lpg0(%r13)
96 .Lcont: c %r1,__LC_SUBCHANNEL_ID
98 clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
100 tsch .Liplirb-.Lpg0(%r13)
101 tm .Liplirb+9-.Lpg0(%r13),0xbf
103 bas %r14,.Ldisab-.Lpg0(%r13)
104 .L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
106 bas %r14,.Ldisab-.Lpg0(%r13)
107 .L003: st %r1,__LC_SUBCHANNEL_ID
108 lhi %r1,0 # mode 0 = esa
109 slr %r0,%r0 # set cpuid to zero
110 sigp %r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
113 srl %r14,1 # need to kill hi bit to avoid specification exceptions.
114 st %r14,.Ldispsw+12-.Lpg0(%r13)
115 lpswe .Ldispsw-.Lpg0(%r13)
117 .Lall: .quad 0x00000000ff000000
120 * These addresses have to be 31 bit otherwise
121 * the sigp will throw a specifcation exception
122 * when switching to ESA mode as bit 31 be set
124 * Bit 31 of the addresses has to be 0 for the
125 * 31bit lpswe instruction a fact they appear to have
126 * omitted from the pop.
128 .Lnewpsw: .quad 0x0000000080000000
130 .Lpcnew: .quad 0x0000000080000000
132 .Lionew: .quad 0x0000000080000000
134 .Lwaitpsw: .quad 0x0202000080000000
136 .Ldispsw: .quad 0x0002000080000000
137 .quad 0x0000000000000000
138 .Liplccws: .long 0x02000000,0x60000018
139 .long 0x08000008,0x20000001
140 .Liplorb: .long 0x0049504c,0x0040ff80
141 .long 0x00000000+.Liplccws
142 .Lschib: .long 0x00000000,0x00000000
143 .long 0x00000000,0x00000000
144 .long 0x00000000,0x00000000
145 .long 0x00000000,0x00000000
146 .long 0x00000000,0x00000000
147 .long 0x00000000,0x00000000
148 .Liplirb: .long 0x00000000,0x00000000
149 .long 0x00000000,0x00000000
150 .long 0x00000000,0x00000000
151 .long 0x00000000,0x00000000
152 .long 0x00000000,0x00000000
153 .long 0x00000000,0x00000000
154 .long 0x00000000,0x00000000
155 .long 0x00000000,0x00000000