1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* QEMU S/390 CPU
*
* Copyright (c) 2009 Ulrich Hecht
* Copyright (c) 2011 Alexander Graf
* Copyright (c) 2012 SUSE LINUX Products GmbH
* Copyright (c) 2012 IBM Corp.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>
* Contributions after 2012-12-11 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "cpu.h"
#include "qemu-common.h"
#include "qemu/timer.h"
#ifndef CONFIG_USER_ONLY
#include "hw/hw.h"
#include "sysemu/arch_init.h"
#endif
#define CR0_RESET 0xE0UL
#define CR14_RESET 0xC2000000UL;
/* generate CPU information for cpu -? */
void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
#ifdef CONFIG_KVM
(*cpu_fprintf)(f, "s390 %16s\n", "host");
#endif
}
#ifndef CONFIG_USER_ONLY
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
CpuDefinitionInfoList *entry;
CpuDefinitionInfo *info;
info = g_malloc0(sizeof(*info));
info->name = g_strdup("host");
entry = g_malloc0(sizeof(*entry));
entry->value = info;
return entry;
}
#endif
/* CPUClass::reset() */
static void s390_cpu_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
log_cpu_state(env, 0);
}
s390_del_running_cpu(env);
scc->parent_reset(s);
memset(env, 0, offsetof(CPUS390XState, breakpoints));
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
/* set halted to 1 to make sure we can add the cpu in
* s390_ipl_cpu code, where env->halted is set back to 0
* after incrementing the cpu counter */
#if !defined(CONFIG_USER_ONLY)
env->halted = 1;
#endif
tlb_flush(env, 1);
}
#if !defined(CONFIG_USER_ONLY)
static void s390_cpu_machine_reset_cb(void *opaque)
{
S390CPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
#endif
static void s390_cpu_initfn(Object *obj)
{
S390CPU *cpu = S390_CPU(obj);
CPUS390XState *env = &cpu->env;
static int cpu_num = 0;
#if !defined(CONFIG_USER_ONLY)
struct tm tm;
#endif
cpu_exec_init(env);
#if !defined(CONFIG_USER_ONLY)
qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
qemu_get_timedate(&tm, 0);
env->tod_offset = TOD_UNIX_EPOCH +
(time2tod(mktimegm(&tm)) * 1000000000ULL);
env->tod_basetime = 0;
env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu);
env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu);
/* set env->halted state to 1 to avoid decrementing the running
* cpu counter in s390_cpu_reset to a negative number at
* initial ipl */
env->halted = 1;
#endif
env->cpu_num = cpu_num++;
env->ext_index = -1;
cpu_reset(CPU(cpu));
}
static void s390_cpu_finalize(Object *obj)
{
#if !defined(CONFIG_USER_ONLY)
S390CPU *cpu = S390_CPU(obj);
qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
#endif
}
static void s390_cpu_class_init(ObjectClass *oc, void *data)
{
S390CPUClass *scc = S390_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(scc);
scc->parent_reset = cc->reset;
cc->reset = s390_cpu_reset;
}
static const TypeInfo s390_cpu_type_info = {
.name = TYPE_S390_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(S390CPU),
.instance_init = s390_cpu_initfn,
.instance_finalize = s390_cpu_finalize,
.abstract = false,
.class_size = sizeof(S390CPUClass),
.class_init = s390_cpu_class_init,
};
static void s390_cpu_register_types(void)
{
type_register_static(&s390_cpu_type_info);
}
type_init(s390_cpu_register_types)
|
