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33#include "qemu/osdep.h"
34#include "cpu.h"
35#include "qom/cpu.h"
36#include "hw/sysbus.h"
37#include "sysemu/dma.h"
38#include "hw/loader.h"
39#include "qapi/error.h"
40#include "hw/core/generic-loader.h"
41
42#define CPU_NONE 0xFFFFFFFF
43
44static void generic_loader_reset(void *opaque)
45{
46 GenericLoaderState *s = GENERIC_LOADER(opaque);
47
48 if (s->set_pc) {
49 CPUClass *cc = CPU_GET_CLASS(s->cpu);
50 cpu_reset(s->cpu);
51 if (cc) {
52 cc->set_pc(s->cpu, s->addr);
53 }
54 }
55
56 if (s->data_len) {
57 assert(s->data_len < sizeof(s->data));
58 dma_memory_write(s->cpu->as, s->addr, &s->data, s->data_len);
59 }
60}
61
62static void generic_loader_realize(DeviceState *dev, Error **errp)
63{
64 GenericLoaderState *s = GENERIC_LOADER(dev);
65 hwaddr entry;
66 int big_endian;
67 int size = 0;
68
69 s->set_pc = false;
70
71
72
73
74
75 if (s->cpu_num_dep != CPU_NONE) {
76 fprintf(stderr, "The 'cpu=' command line option has been deprecated " \
77 "and replaced with 'cpu-num='. Please update your command line " \
78 "to use 'cpu-num=' as 'cpu=' will be removed after 2017.2.\n");
79 if (s->cpu_num == CPU_NONE) {
80 s->cpu_num = s->cpu_num_dep;
81 }
82 }
83
84
85 if (s->data || s->data_len || s->data_be) {
86
87 if (s->file) {
88 error_setg(errp, "Specifying a file is not supported when loading "
89 "memory values");
90 return;
91 } else if (s->force_raw) {
92 error_setg(errp, "Specifying force-raw is not supported when "
93 "loading memory values");
94 return;
95 } else if (!s->data_len) {
96
97 error_setg(errp, "Both data and data-len must be specified");
98 return;
99 } else if (s->data_len > 8) {
100 error_setg(errp, "data-len cannot be greater then 8 bytes");
101 return;
102 }
103 } else if (s->file || s->force_raw) {
104
105 if (s->data || s->data_len || s->data_be) {
106 error_setg(errp, "data can not be specified when loading an "
107 "image");
108 return;
109 }
110
111
112
113 if (s->cpu_num != CPU_NONE) {
114 s->set_pc = true;
115 }
116 } else if (s->addr) {
117
118 if (s->data || s->data_len || s->data_be) {
119 error_setg(errp, "data can not be specified when setting a "
120 "program counter");
121 return;
122 } else if (!s->cpu_num) {
123 error_setg(errp, "cpu_num must be specified when setting a "
124 "program counter");
125 return;
126 }
127 s->set_pc = true;
128 } else {
129
130 error_setg(errp, "please include valid arguments");
131 return;
132 }
133
134 qemu_register_reset(generic_loader_reset, dev);
135
136 if (s->cpu_num != CPU_NONE) {
137 s->cpu = qemu_get_cpu(s->cpu_num);
138 if (!s->cpu) {
139 error_setg(errp, "Specified boot CPU#%d is nonexistent",
140 s->cpu_num);
141 return;
142 }
143 } else {
144 s->cpu = first_cpu;
145 }
146
147#ifdef TARGET_WORDS_BIGENDIAN
148 big_endian = 1;
149#else
150 big_endian = 0;
151#endif
152
153 if (s->file) {
154 if (!s->force_raw) {
155 size = load_elf_as(s->file, NULL, NULL, &entry, NULL, NULL,
156 big_endian, 0, 0, 0, s->cpu->as);
157
158 if (size < 0) {
159 size = load_uimage_as(s->file, &entry, NULL, NULL, NULL, NULL,
160 s->cpu->as);
161 }
162 }
163
164 if (size < 0 || s->force_raw) {
165
166 size = load_image_targphys_as(s->file, s->addr, ram_size,
167 s->cpu->as);
168 } else {
169 s->addr = entry;
170 }
171
172 if (size < 0) {
173 error_setg(errp, "Cannot load specified image %s", s->file);
174 return;
175 }
176 }
177
178
179 if (s->data_be) {
180 s->data = cpu_to_be64(s->data);
181 } else {
182 s->data = cpu_to_le64(s->data);
183 }
184}
185
186static void generic_loader_unrealize(DeviceState *dev, Error **errp)
187{
188 qemu_unregister_reset(generic_loader_reset, dev);
189}
190
191static Property generic_loader_props[] = {
192 DEFINE_PROP_UINT64("addr", GenericLoaderState, addr, 0),
193 DEFINE_PROP_UINT64("data", GenericLoaderState, data, 0),
194 DEFINE_PROP_UINT8("data-len", GenericLoaderState, data_len, 0),
195 DEFINE_PROP_BOOL("data-be", GenericLoaderState, data_be, false),
196
197
198
199 DEFINE_PROP_UINT32("cpu", GenericLoaderState, cpu_num_dep, CPU_NONE),
200 DEFINE_PROP_UINT32("cpu-num", GenericLoaderState, cpu_num, CPU_NONE),
201 DEFINE_PROP_BOOL("force-raw", GenericLoaderState, force_raw, false),
202 DEFINE_PROP_STRING("file", GenericLoaderState, file),
203 DEFINE_PROP_END_OF_LIST(),
204};
205
206static void generic_loader_class_init(ObjectClass *klass, void *data)
207{
208 DeviceClass *dc = DEVICE_CLASS(klass);
209
210
211
212
213
214
215
216 dc->realize = generic_loader_realize;
217 dc->unrealize = generic_loader_unrealize;
218 dc->props = generic_loader_props;
219 dc->desc = "Generic Loader";
220}
221
222static TypeInfo generic_loader_info = {
223 .name = TYPE_GENERIC_LOADER,
224 .parent = TYPE_DEVICE,
225 .instance_size = sizeof(GenericLoaderState),
226 .class_init = generic_loader_class_init,
227};
228
229static void generic_loader_register_type(void)
230{
231 type_register_static(&generic_loader_info);
232}
233
234type_init(generic_loader_register_type)
235