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33#include "qemu/osdep.h"
34#include "qom/cpu.h"
35#include "hw/sysbus.h"
36#include "sysemu/dma.h"
37#include "hw/loader.h"
38#include "qapi/error.h"
39#include "hw/core/generic-loader.h"
40
41#define CPU_NONE 0xFFFFFFFF
42
43static void generic_loader_reset(void *opaque)
44{
45 GenericLoaderState *s = GENERIC_LOADER(opaque);
46
47 if (s->set_pc) {
48 CPUClass *cc = CPU_GET_CLASS(s->cpu);
49 cpu_reset(s->cpu);
50 if (cc) {
51 cc->set_pc(s->cpu, s->addr);
52 }
53 }
54
55 if (s->data_len) {
56 assert(s->data_len < sizeof(s->data));
57 dma_memory_write(s->cpu->as, s->addr, &s->data, s->data_len);
58 }
59}
60
61static void generic_loader_realize(DeviceState *dev, Error **errp)
62{
63 GenericLoaderState *s = GENERIC_LOADER(dev);
64 hwaddr entry;
65 int big_endian;
66 int size = 0;
67
68 s->set_pc = false;
69
70
71 if (s->data || s->data_len || s->data_be) {
72
73 if (s->file) {
74 error_setg(errp, "Specifying a file is not supported when loading "
75 "memory values");
76 return;
77 } else if (s->force_raw) {
78 error_setg(errp, "Specifying force-raw is not supported when "
79 "loading memory values");
80 return;
81 } else if (!s->data_len) {
82
83 error_setg(errp, "Both data and data-len must be specified");
84 return;
85 } else if (s->data_len > 8) {
86 error_setg(errp, "data-len cannot be greater then 8 bytes");
87 return;
88 }
89 } else if (s->file || s->force_raw) {
90
91 if (s->data || s->data_len || s->data_be) {
92 error_setg(errp, "data can not be specified when loading an "
93 "image");
94 return;
95 }
96
97
98
99 if (s->cpu_num != CPU_NONE) {
100 s->set_pc = true;
101 }
102 } else if (s->addr) {
103
104 if (s->data || s->data_len || s->data_be) {
105 error_setg(errp, "data can not be specified when setting a "
106 "program counter");
107 return;
108 } else if (s->cpu_num == CPU_NONE) {
109 error_setg(errp, "cpu_num must be specified when setting a "
110 "program counter");
111 return;
112 }
113 s->set_pc = true;
114 } else {
115
116 error_setg(errp, "please include valid arguments");
117 return;
118 }
119
120 qemu_register_reset(generic_loader_reset, dev);
121
122 if (s->cpu_num != CPU_NONE) {
123 s->cpu = qemu_get_cpu(s->cpu_num);
124 if (!s->cpu) {
125 error_setg(errp, "Specified boot CPU#%d is nonexistent",
126 s->cpu_num);
127 return;
128 }
129 } else {
130 s->cpu = first_cpu;
131 }
132
133#ifdef TARGET_WORDS_BIGENDIAN
134 big_endian = 1;
135#else
136 big_endian = 0;
137#endif
138
139 if (s->file) {
140 AddressSpace *as = s->cpu ? s->cpu->as : NULL;
141
142 if (!s->force_raw) {
143 size = load_elf_as(s->file, NULL, NULL, &entry, NULL, NULL,
144 big_endian, 0, 0, 0, as);
145
146 if (size < 0) {
147 size = load_uimage_as(s->file, &entry, NULL, NULL, NULL, NULL,
148 as);
149 }
150 }
151
152 if (size < 0 || s->force_raw) {
153
154 size = load_image_targphys_as(s->file, s->addr, ram_size, as);
155 } else {
156 s->addr = entry;
157 }
158
159 if (size < 0) {
160 error_setg(errp, "Cannot load specified image %s", s->file);
161 return;
162 }
163 }
164
165
166 if (s->data_be) {
167 s->data = cpu_to_be64(s->data);
168 } else {
169 s->data = cpu_to_le64(s->data);
170 }
171}
172
173static void generic_loader_unrealize(DeviceState *dev, Error **errp)
174{
175 qemu_unregister_reset(generic_loader_reset, dev);
176}
177
178static Property generic_loader_props[] = {
179 DEFINE_PROP_UINT64("addr", GenericLoaderState, addr, 0),
180 DEFINE_PROP_UINT64("data", GenericLoaderState, data, 0),
181 DEFINE_PROP_UINT8("data-len", GenericLoaderState, data_len, 0),
182 DEFINE_PROP_BOOL("data-be", GenericLoaderState, data_be, false),
183 DEFINE_PROP_UINT32("cpu-num", GenericLoaderState, cpu_num, CPU_NONE),
184 DEFINE_PROP_BOOL("force-raw", GenericLoaderState, force_raw, false),
185 DEFINE_PROP_STRING("file", GenericLoaderState, file),
186 DEFINE_PROP_END_OF_LIST(),
187};
188
189static void generic_loader_class_init(ObjectClass *klass, void *data)
190{
191 DeviceClass *dc = DEVICE_CLASS(klass);
192
193
194
195
196
197
198
199 dc->realize = generic_loader_realize;
200 dc->unrealize = generic_loader_unrealize;
201 dc->props = generic_loader_props;
202 dc->desc = "Generic Loader";
203}
204
205static TypeInfo generic_loader_info = {
206 .name = TYPE_GENERIC_LOADER,
207 .parent = TYPE_DEVICE,
208 .instance_size = sizeof(GenericLoaderState),
209 .class_init = generic_loader_class_init,
210};
211
212static void generic_loader_register_type(void)
213{
214 type_register_static(&generic_loader_info);
215}
216
217type_init(generic_loader_register_type)
218