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#include "qemu/osdep.h"
34#include "hw/isa/isa.h"
35#include "hw/qdev-properties.h"
36#include "ui/console.h"
37#include "qemu/error-report.h"
38#include "qemu/module.h"
39#include "qemu/timer.h"
40#include "qom/object.h"
41#include "hw/acpi/acpi_aml_interface.h"
42
43
44
45#define APPLESMC_DEFAULT_IOBASE 0x300
46#define TYPE_APPLE_SMC "isa-applesmc"
47#define APPLESMC_MAX_DATA_LENGTH 32
48#define APPLESMC_PROP_IO_BASE "iobase"
49
50enum {
51 APPLESMC_DATA_PORT = 0x00,
52 APPLESMC_CMD_PORT = 0x04,
53 APPLESMC_ERR_PORT = 0x1e,
54 APPLESMC_NUM_PORTS = 0x20,
55};
56
57enum {
58 APPLESMC_READ_CMD = 0x10,
59 APPLESMC_WRITE_CMD = 0x11,
60 APPLESMC_GET_KEY_BY_INDEX_CMD = 0x12,
61 APPLESMC_GET_KEY_TYPE_CMD = 0x13,
62};
63
64enum {
65 APPLESMC_ST_CMD_DONE = 0x00,
66 APPLESMC_ST_DATA_READY = 0x01,
67 APPLESMC_ST_BUSY = 0x02,
68 APPLESMC_ST_ACK = 0x04,
69 APPLESMC_ST_NEW_CMD = 0x08,
70};
71
72enum {
73 APPLESMC_ST_1E_CMD_INTRUPTED = 0x80,
74 APPLESMC_ST_1E_STILL_BAD_CMD = 0x81,
75 APPLESMC_ST_1E_BAD_CMD = 0x82,
76 APPLESMC_ST_1E_NOEXIST = 0x84,
77 APPLESMC_ST_1E_WRITEONLY = 0x85,
78 APPLESMC_ST_1E_READONLY = 0x86,
79 APPLESMC_ST_1E_BAD_INDEX = 0xb8,
80};
81
82#ifdef DEBUG_SMC
83#define smc_debug(...) fprintf(stderr, "AppleSMC: " __VA_ARGS__)
84#else
85#define smc_debug(...) do { } while (0)
86#endif
87
88static char default_osk[64] = "This is a dummy key. Enter the real key "
89 "using the -osk parameter";
90
91struct AppleSMCData {
92 uint8_t len;
93 const char *key;
94 const char *data;
95 QLIST_ENTRY(AppleSMCData) node;
96};
97
98OBJECT_DECLARE_SIMPLE_TYPE(AppleSMCState, APPLE_SMC)
99
100struct AppleSMCState {
101 ISADevice parent_obj;
102
103 MemoryRegion io_data;
104 MemoryRegion io_cmd;
105 MemoryRegion io_err;
106 uint32_t iobase;
107 uint8_t cmd;
108 uint8_t status;
109 uint8_t status_1e;
110 uint8_t last_ret;
111 char key[4];
112 uint8_t read_pos;
113 uint8_t data_len;
114 uint8_t data_pos;
115 uint8_t data[255];
116 char *osk;
117 QLIST_HEAD(, AppleSMCData) data_def;
118};
119
120static void applesmc_io_cmd_write(void *opaque, hwaddr addr, uint64_t val,
121 unsigned size)
122{
123 AppleSMCState *s = opaque;
124 uint8_t status = s->status & 0x0f;
125
126 smc_debug("CMD received: 0x%02x\n", (uint8_t)val);
127 switch (val) {
128 case APPLESMC_READ_CMD:
129
130 if (status == APPLESMC_ST_CMD_DONE || status == APPLESMC_ST_NEW_CMD) {
131 s->cmd = val;
132 s->status = APPLESMC_ST_NEW_CMD | APPLESMC_ST_ACK;
133 } else {
134 smc_debug("ERROR: previous command interrupted!\n");
135 s->status = APPLESMC_ST_NEW_CMD;
136 s->status_1e = APPLESMC_ST_1E_CMD_INTRUPTED;
137 }
138 break;
139 default:
140 smc_debug("UNEXPECTED CMD 0x%02x\n", (uint8_t)val);
141 s->status = APPLESMC_ST_NEW_CMD;
142 s->status_1e = APPLESMC_ST_1E_BAD_CMD;
143 }
144 s->read_pos = 0;
145 s->data_pos = 0;
146}
147
148static struct AppleSMCData *applesmc_find_key(AppleSMCState *s)
149{
150 struct AppleSMCData *d;
151
152 QLIST_FOREACH(d, &s->data_def, node) {
153 if (!memcmp(d->key, s->key, 4)) {
154 return d;
155 }
156 }
157 return NULL;
158}
159
160static void applesmc_io_data_write(void *opaque, hwaddr addr, uint64_t val,
161 unsigned size)
162{
163 AppleSMCState *s = opaque;
164 struct AppleSMCData *d;
165
166 smc_debug("DATA received: 0x%02x\n", (uint8_t)val);
167 switch (s->cmd) {
168 case APPLESMC_READ_CMD:
169 if ((s->status & 0x0f) == APPLESMC_ST_CMD_DONE) {
170 break;
171 }
172 if (s->read_pos < 4) {
173 s->key[s->read_pos] = val;
174 s->status = APPLESMC_ST_ACK;
175 } else if (s->read_pos == 4) {
176 d = applesmc_find_key(s);
177 if (d != NULL) {
178 memcpy(s->data, d->data, d->len);
179 s->data_len = d->len;
180 s->data_pos = 0;
181 s->status = APPLESMC_ST_ACK | APPLESMC_ST_DATA_READY;
182 s->status_1e = APPLESMC_ST_CMD_DONE;
183 } else {
184 smc_debug("READ_CMD: key '%c%c%c%c' not found!\n",
185 s->key[0], s->key[1], s->key[2], s->key[3]);
186 s->status = APPLESMC_ST_CMD_DONE;
187 s->status_1e = APPLESMC_ST_1E_NOEXIST;
188 }
189 }
190 s->read_pos++;
191 break;
192 default:
193 s->status = APPLESMC_ST_CMD_DONE;
194 s->status_1e = APPLESMC_ST_1E_STILL_BAD_CMD;
195 }
196}
197
198static void applesmc_io_err_write(void *opaque, hwaddr addr, uint64_t val,
199 unsigned size)
200{
201 smc_debug("ERR_CODE received: 0x%02x, ignoring!\n", (uint8_t)val);
202
203}
204
205static uint64_t applesmc_io_data_read(void *opaque, hwaddr addr, unsigned size)
206{
207 AppleSMCState *s = opaque;
208
209 switch (s->cmd) {
210 case APPLESMC_READ_CMD:
211 if (!(s->status & APPLESMC_ST_DATA_READY)) {
212 break;
213 }
214 if (s->data_pos < s->data_len) {
215 s->last_ret = s->data[s->data_pos];
216 smc_debug("READ '%c%c%c%c'[%d] = %02x\n",
217 s->key[0], s->key[1], s->key[2], s->key[3],
218 s->data_pos, s->last_ret);
219 s->data_pos++;
220 if (s->data_pos == s->data_len) {
221 s->status = APPLESMC_ST_CMD_DONE;
222 smc_debug("READ '%c%c%c%c' Len=%d complete!\n",
223 s->key[0], s->key[1], s->key[2], s->key[3],
224 s->data_len);
225 } else {
226 s->status = APPLESMC_ST_ACK | APPLESMC_ST_DATA_READY;
227 }
228 }
229 break;
230 default:
231 s->status = APPLESMC_ST_CMD_DONE;
232 s->status_1e = APPLESMC_ST_1E_STILL_BAD_CMD;
233 }
234 smc_debug("DATA sent: 0x%02x\n", s->last_ret);
235
236 return s->last_ret;
237}
238
239static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr, unsigned size)
240{
241 AppleSMCState *s = opaque;
242
243 smc_debug("CMD sent: 0x%02x\n", s->status);
244 return s->status;
245}
246
247static uint64_t applesmc_io_err_read(void *opaque, hwaddr addr, unsigned size)
248{
249 AppleSMCState *s = opaque;
250
251
252 smc_debug("ERR_CODE sent: 0x%02x\n", s->status_1e);
253 return s->status_1e;
254}
255
256static void applesmc_add_key(AppleSMCState *s, const char *key,
257 int len, const char *data)
258{
259 struct AppleSMCData *def;
260
261 def = g_new0(struct AppleSMCData, 1);
262 def->key = key;
263 def->len = len;
264 def->data = data;
265
266 QLIST_INSERT_HEAD(&s->data_def, def, node);
267}
268
269static void qdev_applesmc_isa_reset(DeviceState *dev)
270{
271 AppleSMCState *s = APPLE_SMC(dev);
272 struct AppleSMCData *d, *next;
273
274
275 QLIST_FOREACH_SAFE(d, &s->data_def, node, next) {
276 QLIST_REMOVE(d, node);
277 }
278 s->status = 0x00;
279 s->status_1e = 0x00;
280 s->last_ret = 0x00;
281
282 applesmc_add_key(s, "REV ", 6, "\x01\x13\x0f\x00\x00\x03");
283 applesmc_add_key(s, "OSK0", 32, s->osk);
284 applesmc_add_key(s, "OSK1", 32, s->osk + 32);
285 applesmc_add_key(s, "NATJ", 1, "\0");
286 applesmc_add_key(s, "MSSP", 1, "\0");
287 applesmc_add_key(s, "MSSD", 1, "\0x3");
288}
289
290static const MemoryRegionOps applesmc_data_io_ops = {
291 .write = applesmc_io_data_write,
292 .read = applesmc_io_data_read,
293 .endianness = DEVICE_NATIVE_ENDIAN,
294 .impl = {
295 .min_access_size = 1,
296 .max_access_size = 1,
297 },
298};
299
300static const MemoryRegionOps applesmc_cmd_io_ops = {
301 .write = applesmc_io_cmd_write,
302 .read = applesmc_io_cmd_read,
303 .endianness = DEVICE_NATIVE_ENDIAN,
304 .impl = {
305 .min_access_size = 1,
306 .max_access_size = 1,
307 },
308};
309
310static const MemoryRegionOps applesmc_err_io_ops = {
311 .write = applesmc_io_err_write,
312 .read = applesmc_io_err_read,
313 .endianness = DEVICE_NATIVE_ENDIAN,
314 .impl = {
315 .min_access_size = 1,
316 .max_access_size = 1,
317 },
318};
319
320static void applesmc_isa_realize(DeviceState *dev, Error **errp)
321{
322 AppleSMCState *s = APPLE_SMC(dev);
323
324 memory_region_init_io(&s->io_data, OBJECT(s), &applesmc_data_io_ops, s,
325 "applesmc-data", 1);
326 isa_register_ioport(&s->parent_obj, &s->io_data,
327 s->iobase + APPLESMC_DATA_PORT);
328
329 memory_region_init_io(&s->io_cmd, OBJECT(s), &applesmc_cmd_io_ops, s,
330 "applesmc-cmd", 1);
331 isa_register_ioport(&s->parent_obj, &s->io_cmd,
332 s->iobase + APPLESMC_CMD_PORT);
333
334 memory_region_init_io(&s->io_err, OBJECT(s), &applesmc_err_io_ops, s,
335 "applesmc-err", 1);
336 isa_register_ioport(&s->parent_obj, &s->io_err,
337 s->iobase + APPLESMC_ERR_PORT);
338
339 if (!s->osk || (strlen(s->osk) != 64)) {
340 warn_report("Using AppleSMC with invalid key");
341 s->osk = default_osk;
342 }
343
344 QLIST_INIT(&s->data_def);
345 qdev_applesmc_isa_reset(dev);
346}
347
348static Property applesmc_isa_properties[] = {
349 DEFINE_PROP_UINT32(APPLESMC_PROP_IO_BASE, AppleSMCState, iobase,
350 APPLESMC_DEFAULT_IOBASE),
351 DEFINE_PROP_STRING("osk", AppleSMCState, osk),
352 DEFINE_PROP_END_OF_LIST(),
353};
354
355static void build_applesmc_aml(AcpiDevAmlIf *adev, Aml *scope)
356{
357 Aml *crs;
358 AppleSMCState *s = APPLE_SMC(adev);
359 uint32_t iobase = s->iobase;
360 Aml *dev = aml_device("SMC");
361
362 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
363
364 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
365 crs = aml_resource_template();
366 aml_append(crs,
367 aml_io(AML_DECODE16, iobase, iobase, 0x01, APPLESMC_MAX_DATA_LENGTH)
368 );
369 aml_append(crs, aml_irq_no_flags(6));
370 aml_append(dev, aml_name_decl("_CRS", crs));
371 aml_append(scope, dev);
372}
373
374static void qdev_applesmc_class_init(ObjectClass *klass, void *data)
375{
376 DeviceClass *dc = DEVICE_CLASS(klass);
377 AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass);
378
379 dc->realize = applesmc_isa_realize;
380 dc->reset = qdev_applesmc_isa_reset;
381 device_class_set_props(dc, applesmc_isa_properties);
382 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
383 adevc->build_dev_aml = build_applesmc_aml;
384}
385
386static const TypeInfo applesmc_isa_info = {
387 .name = TYPE_APPLE_SMC,
388 .parent = TYPE_ISA_DEVICE,
389 .instance_size = sizeof(AppleSMCState),
390 .class_init = qdev_applesmc_class_init,
391 .interfaces = (InterfaceInfo[]) {
392 { TYPE_ACPI_DEV_AML_IF },
393 { },
394 },
395};
396
397static void applesmc_register_types(void)
398{
399 type_register_static(&applesmc_isa_info);
400}
401
402type_init(applesmc_register_types)
403
