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