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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 }
62}
63
64static void generic_loader_realize(DeviceState *dev, Error **errp)
65{
66 GenericLoaderState *s = GENERIC_LOADER(dev);
67 hwaddr entry;
68 int big_endian;
69 int size = 0;
70
71 s->set_pc = false;
72
73
74 if (s->data || s->data_len || s->data_be) {
75
76 if (s->file) {
77 error_setg(errp, "Specifying a file is not supported when loading "
78 "memory values");
79 return;
80 } else if (s->force_raw) {
81 error_setg(errp, "Specifying force-raw is not supported when "
82 "loading memory values");
83 return;
84 } else if (!s->data_len) {
85
86 error_setg(errp, "Both data and data-len must be specified");
87 return;
88 } else if (s->data_len > 8) {
89 error_setg(errp, "data-len cannot be greater then 8 bytes");
90 return;
91 }
92 } else if (s->file || s->force_raw) {
93
94 if (s->data || s->data_len || s->data_be) {
95 error_setg(errp, "data can not be specified when loading an "
96 "image");
97 return;
98 }
99
100
101
102 if (s->cpu_num != CPU_NONE) {
103 s->set_pc = true;
104 }
105 } else if (s->addr) {
106
107 if (s->data || s->data_len || s->data_be) {
108 error_setg(errp, "data can not be specified when setting a "
109 "program counter");
110 return;
111 } else if (s->cpu_num == CPU_NONE) {
112 error_setg(errp, "cpu_num must be specified when setting a "
113 "program counter");
114 return;
115 }
116 s->set_pc = true;
117 } else {
118
119 error_setg(errp, "please include valid arguments");
120 return;
121 }
122
123 qemu_register_reset(generic_loader_reset, dev);
124
125 if (s->cpu_num != CPU_NONE) {
126 s->cpu = qemu_get_cpu(s->cpu_num);
127 if (!s->cpu) {
128 error_setg(errp, "Specified boot CPU#%d is nonexistent",
129 s->cpu_num);
130 return;
131 }
132 } else {
133 s->cpu = first_cpu;
134 }
135
136 big_endian = target_words_bigendian();
137
138 if (s->file) {
139 AddressSpace *as = s->cpu ? s->cpu->as : NULL;
140
141 if (!s->force_raw) {
142 size = load_elf_as(s->file, NULL, NULL, NULL, &entry, NULL, NULL,
143 NULL, big_endian, 0, 0, 0, as);
144
145 if (size < 0) {
146 size = load_uimage_as(s->file, &entry, NULL, NULL, NULL, NULL,
147 as);
148 }
149
150 if (size < 0) {
151 size = load_targphys_hex_as(s->file, &entry, as);
152 }
153 }
154
155 if (size < 0 || s->force_raw) {
156
157 size = load_image_targphys_as(s->file, s->addr, current_machine->ram_size, as);
158 } else {
159 s->addr = entry;
160 }
161
162 if (size < 0) {
163 error_setg(errp, "Cannot load specified image %s", s->file);
164 return;
165 }
166 }
167
168
169 if (s->data_be) {
170 s->data = cpu_to_be64(s->data);
171 } else {
172 s->data = cpu_to_le64(s->data);
173 }
174}
175
176static void generic_loader_unrealize(DeviceState *dev)
177{
178 qemu_unregister_reset(generic_loader_reset, dev);
179}
180
181static Property generic_loader_props[] = {
182 DEFINE_PROP_UINT64("addr", GenericLoaderState, addr, 0),
183 DEFINE_PROP_UINT64("data", GenericLoaderState, data, 0),
184 DEFINE_PROP_UINT8("data-len", GenericLoaderState, data_len, 0),
185 DEFINE_PROP_BOOL("data-be", GenericLoaderState, data_be, false),
186 DEFINE_PROP_UINT32("cpu-num", GenericLoaderState, cpu_num, CPU_NONE),
187 DEFINE_PROP_BOOL("force-raw", GenericLoaderState, force_raw, false),
188 DEFINE_PROP_STRING("file", GenericLoaderState, file),
189 DEFINE_PROP_END_OF_LIST(),
190};
191
192static void generic_loader_class_init(ObjectClass *klass, void *data)
193{
194 DeviceClass *dc = DEVICE_CLASS(klass);
195
196
197
198
199
200
201
202 dc->realize = generic_loader_realize;
203 dc->unrealize = generic_loader_unrealize;
204 device_class_set_props(dc, generic_loader_props);
205 dc->desc = "Generic Loader";
206 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
207}
208
209static TypeInfo generic_loader_info = {
210 .name = TYPE_GENERIC_LOADER,
211 .parent = TYPE_DEVICE,
212 .instance_size = sizeof(GenericLoaderState),
213 .class_init = generic_loader_class_init,
214};
215
216static void generic_loader_register_type(void)
217{
218 type_register_static(&generic_loader_info);
219}
220
221type_init(generic_loader_register_type)
222