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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* bootloader support
*
* Copyright IBM, Corp. 2012
*
* Authors:
* Christian Borntraeger <borntraeger@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at your
* option) any later version. See the COPYING file in the top-level directory.
*
*/
#include "sysemu/sysemu.h"
#include "cpu.h"
#include "elf.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "hw/s390x/virtio-ccw.h"
#include "hw/s390x/css.h"
#define KERN_IMAGE_START 0x010000UL
#define KERN_PARM_AREA 0x010480UL
#define INITRD_START 0x800000UL
#define INITRD_PARM_START 0x010408UL
#define INITRD_PARM_SIZE 0x010410UL
#define PARMFILE_START 0x001000UL
#define ZIPL_IMAGE_START 0x009000UL
#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
#define TYPE_S390_IPL "s390-ipl"
#define S390_IPL(obj) \
OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
#if 0
#define S390_IPL_CLASS(klass) \
OBJECT_CLASS_CHECK(S390IPLState, (klass), TYPE_S390_IPL)
#define S390_IPL_GET_CLASS(obj) \
OBJECT_GET_CLASS(S390IPLState, (obj), TYPE_S390_IPL)
#endif
typedef struct S390IPLClass {
/*< private >*/
SysBusDeviceClass parent_class;
/*< public >*/
void (*parent_reset) (SysBusDevice *dev);
} S390IPLClass;
typedef struct S390IPLState {
/*< private >*/
SysBusDevice parent_obj;
uint64_t start_addr;
/*< public >*/
char *kernel;
char *initrd;
char *cmdline;
char *firmware;
} S390IPLState;
static int s390_ipl_init(SysBusDevice *dev)
{
S390IPLState *ipl = S390_IPL(dev);
int kernel_size;
if (!ipl->kernel) {
int bios_size;
char *bios_filename;
/* Load zipl bootloader */
if (bios_name == NULL) {
bios_name = ipl->firmware;
}
bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
if (bios_filename == NULL) {
hw_error("could not find stage1 bootloader\n");
}
bios_size = load_elf(bios_filename, NULL, NULL, &ipl->start_addr, NULL,
NULL, 1, ELF_MACHINE, 0);
if (bios_size == -1) {
bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
4096);
ipl->start_addr = ZIPL_IMAGE_START;
if (bios_size > 4096) {
hw_error("stage1 bootloader is > 4k\n");
}
}
g_free(bios_filename);
if (bios_size == -1) {
hw_error("could not load bootloader '%s'\n", bios_name);
}
return 0;
} else {
kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, NULL,
NULL, 1, ELF_MACHINE, 0);
if (kernel_size == -1) {
kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
}
if (kernel_size == -1) {
fprintf(stderr, "could not load kernel '%s'\n", ipl->kernel);
return -1;
}
/* we have to overwrite values in the kernel image, which are "rom" */
strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
/*
* we can not rely on the ELF entry point, since up to 3.2 this
* value was 0x800 (the SALIPL loader) and it wont work. For
* all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine.
*/
ipl->start_addr = KERN_IMAGE_START;
}
if (ipl->initrd) {
ram_addr_t initrd_offset;
int initrd_size;
initrd_offset = INITRD_START;
while (kernel_size + 0x100000 > initrd_offset) {
initrd_offset += 0x100000;
}
initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
ram_size - initrd_offset);
if (initrd_size == -1) {
fprintf(stderr, "qemu: could not load initrd '%s'\n", ipl->initrd);
exit(1);
}
/* we have to overwrite values in the kernel image, which are "rom" */
stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
}
return 0;
}
static Property s390_ipl_properties[] = {
DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
DEFINE_PROP_STRING("firmware", S390IPLState, firmware),
DEFINE_PROP_END_OF_LIST(),
};
static void s390_ipl_reset(DeviceState *dev)
{
S390IPLState *ipl = S390_IPL(dev);
S390CPU *cpu = S390_CPU(qemu_get_cpu(0));
CPUS390XState *env = &cpu->env;
env->psw.addr = ipl->start_addr;
env->psw.mask = IPL_PSW_MASK;
if (!ipl->kernel) {
/* Tell firmware, if there is a preferred boot device */
env->regs[7] = -1;
DeviceState *dev_st = get_boot_device(0);
if (dev_st) {
VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast(
OBJECT(qdev_get_parent_bus(dev_st)->parent),
TYPE_VIRTIO_CCW_DEVICE);
if (ccw_dev) {
env->regs[7] = ccw_dev->sch->cssid << 24 |
ccw_dev->sch->ssid << 16 |
ccw_dev->sch->devno;
}
}
}
s390_add_running_cpu(cpu);
}
static void s390_ipl_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = s390_ipl_init;
dc->props = s390_ipl_properties;
dc->reset = s390_ipl_reset;
dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */
}
static const TypeInfo s390_ipl_info = {
.class_init = s390_ipl_class_init,
.parent = TYPE_SYS_BUS_DEVICE,
.name = "s390-ipl",
.instance_size = sizeof(S390IPLState),
};
static void s390_ipl_register_types(void)
{
type_register_static(&s390_ipl_info);
}
type_init(s390_ipl_register_types)
|
