2 * Raspberry Pi emulation (c) 2012 Gregory Estrade
4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
5 * See the COPYING file in the top-level directory.
8 #include "qemu/osdep.h"
9 #include "qapi/error.h"
10 #include "hw/misc/bcm2835_property.h"
11 #include "hw/qdev-properties.h"
12 #include "migration/vmstate.h"
14 #include "hw/misc/bcm2835_mbox_defs.h"
15 #include "sysemu/dma.h"
17 #include "qemu/module.h"
20 /* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
22 static void bcm2835_property_mbox_push(BCM2835PropertyState
*s
, uint32_t value
)
30 uint32_t offset
, length
, color
;
33 * Copy the current state of the framebuffer config; we will update
34 * this copy as we process tags and then ask the framebuffer to use
37 BCM2835FBConfig fbconfig
= s
->fbdev
->config
;
38 bool fbconfig_updated
= false;
44 tot_len
= ldl_le_phys(&s
->dma_as
, value
);
46 /* @(addr + 4) : Buffer response code */
48 while (value
+ 8 <= s
->addr
+ tot_len
) {
49 tag
= ldl_le_phys(&s
->dma_as
, value
);
50 bufsize
= ldl_le_phys(&s
->dma_as
, value
+ 4);
51 /* @(value + 8) : Request/response indicator */
54 case 0x00000000: /* End tag */
56 case 0x00000001: /* Get firmware revision */
57 stl_le_phys(&s
->dma_as
, value
+ 12, 346337);
60 case 0x00010001: /* Get board model */
61 qemu_log_mask(LOG_UNIMP
,
62 "bcm2835_property: 0x%08x get board model NYI\n",
66 case 0x00010002: /* Get board revision */
67 stl_le_phys(&s
->dma_as
, value
+ 12, s
->board_rev
);
70 case 0x00010003: /* Get board MAC address */
71 resplen
= sizeof(s
->macaddr
.a
);
72 dma_memory_write(&s
->dma_as
, value
+ 12, s
->macaddr
.a
, resplen
,
73 MEMTXATTRS_UNSPECIFIED
);
75 case 0x00010004: /* Get board serial */
76 qemu_log_mask(LOG_UNIMP
,
77 "bcm2835_property: 0x%08x get board serial NYI\n",
81 case 0x00010005: /* Get ARM memory */
83 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
85 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_base
);
88 case 0x00010006: /* Get VC memory */
90 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->vcram_base
);
92 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_size
);
95 case 0x00028001: /* Set power state */
96 /* Assume that whatever device they asked for exists,
97 * and we'll just claim we set it to the desired state
99 tmp
= ldl_le_phys(&s
->dma_as
, value
+ 16);
100 stl_le_phys(&s
->dma_as
, value
+ 16, (tmp
& 1));
106 case 0x00030001: /* Get clock state */
107 stl_le_phys(&s
->dma_as
, value
+ 16, 0x1);
111 case 0x00038001: /* Set clock state */
112 qemu_log_mask(LOG_UNIMP
,
113 "bcm2835_property: 0x%08x set clock state NYI\n",
118 case 0x00030002: /* Get clock rate */
119 case 0x00030004: /* Get max clock rate */
120 case 0x00030007: /* Get min clock rate */
121 switch (ldl_le_phys(&s
->dma_as
, value
+ 12)) {
123 stl_le_phys(&s
->dma_as
, value
+ 16, 50000000);
126 stl_le_phys(&s
->dma_as
, value
+ 16, 3000000);
129 stl_le_phys(&s
->dma_as
, value
+ 16, 700000000);
135 case 0x00038002: /* Set clock rate */
136 case 0x00038004: /* Set max clock rate */
137 case 0x00038007: /* Set min clock rate */
138 qemu_log_mask(LOG_UNIMP
,
139 "bcm2835_property: 0x%08x set clock rate NYI\n",
146 case 0x00030006: /* Get temperature */
147 stl_le_phys(&s
->dma_as
, value
+ 16, 25000);
151 case 0x0003000A: /* Get max temperature */
152 stl_le_phys(&s
->dma_as
, value
+ 16, 99000);
158 case 0x00040001: /* Allocate buffer */
159 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.base
);
160 stl_le_phys(&s
->dma_as
, value
+ 16,
161 bcm2835_fb_get_size(&fbconfig
));
164 case 0x00048001: /* Release buffer */
167 case 0x00040002: /* Blank screen */
170 case 0x00044003: /* Test physical display width/height */
171 case 0x00044004: /* Test virtual display width/height */
174 case 0x00048003: /* Set physical display width/height */
175 fbconfig
.xres
= ldl_le_phys(&s
->dma_as
, value
+ 12);
176 fbconfig
.yres
= ldl_le_phys(&s
->dma_as
, value
+ 16);
177 bcm2835_fb_validate_config(&fbconfig
);
178 fbconfig_updated
= true;
180 case 0x00040003: /* Get physical display width/height */
181 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xres
);
182 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yres
);
185 case 0x00048004: /* Set virtual display width/height */
186 fbconfig
.xres_virtual
= ldl_le_phys(&s
->dma_as
, value
+ 12);
187 fbconfig
.yres_virtual
= ldl_le_phys(&s
->dma_as
, value
+ 16);
188 bcm2835_fb_validate_config(&fbconfig
);
189 fbconfig_updated
= true;
191 case 0x00040004: /* Get virtual display width/height */
192 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xres_virtual
);
193 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yres_virtual
);
196 case 0x00044005: /* Test depth */
199 case 0x00048005: /* Set depth */
200 fbconfig
.bpp
= ldl_le_phys(&s
->dma_as
, value
+ 12);
201 bcm2835_fb_validate_config(&fbconfig
);
202 fbconfig_updated
= true;
204 case 0x00040005: /* Get depth */
205 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.bpp
);
208 case 0x00044006: /* Test pixel order */
211 case 0x00048006: /* Set pixel order */
212 fbconfig
.pixo
= ldl_le_phys(&s
->dma_as
, value
+ 12);
213 bcm2835_fb_validate_config(&fbconfig
);
214 fbconfig_updated
= true;
216 case 0x00040006: /* Get pixel order */
217 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.pixo
);
220 case 0x00044007: /* Test pixel alpha */
223 case 0x00048007: /* Set alpha */
224 fbconfig
.alpha
= ldl_le_phys(&s
->dma_as
, value
+ 12);
225 bcm2835_fb_validate_config(&fbconfig
);
226 fbconfig_updated
= true;
228 case 0x00040007: /* Get alpha */
229 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.alpha
);
232 case 0x00040008: /* Get pitch */
233 stl_le_phys(&s
->dma_as
, value
+ 12,
234 bcm2835_fb_get_pitch(&fbconfig
));
237 case 0x00044009: /* Test virtual offset */
240 case 0x00048009: /* Set virtual offset */
241 fbconfig
.xoffset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
242 fbconfig
.yoffset
= ldl_le_phys(&s
->dma_as
, value
+ 16);
243 bcm2835_fb_validate_config(&fbconfig
);
244 fbconfig_updated
= true;
246 case 0x00040009: /* Get virtual offset */
247 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xoffset
);
248 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yoffset
);
251 case 0x0004000a: /* Get/Test/Set overscan */
254 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
255 stl_le_phys(&s
->dma_as
, value
+ 16, 0);
256 stl_le_phys(&s
->dma_as
, value
+ 20, 0);
257 stl_le_phys(&s
->dma_as
, value
+ 24, 0);
260 case 0x0004800b: /* Set palette */
261 offset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
262 length
= ldl_le_phys(&s
->dma_as
, value
+ 16);
264 while (n
< length
- offset
) {
265 color
= ldl_le_phys(&s
->dma_as
, value
+ 20 + (n
<< 2));
266 stl_le_phys(&s
->dma_as
,
267 s
->fbdev
->vcram_base
+ ((offset
+ n
) << 2), color
);
270 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
274 case 0x00060001: /* Get DMA channels */
276 stl_le_phys(&s
->dma_as
, value
+ 12, 0x003C);
280 case 0x00050001: /* Get command line */
285 qemu_log_mask(LOG_UNIMP
,
286 "bcm2835_property: unhandled tag 0x%08x\n", tag
);
290 trace_bcm2835_mbox_property(tag
, bufsize
, resplen
);
295 stl_le_phys(&s
->dma_as
, value
+ 8, (1 << 31) | resplen
);
296 value
+= bufsize
+ 12;
299 /* Reconfigure framebuffer if required */
300 if (fbconfig_updated
) {
301 bcm2835_fb_reconfigure(s
->fbdev
, &fbconfig
);
304 /* Buffer response code */
305 stl_le_phys(&s
->dma_as
, s
->addr
+ 4, (1 << 31));
308 static uint64_t bcm2835_property_read(void *opaque
, hwaddr offset
,
311 BCM2835PropertyState
*s
= opaque
;
316 res
= MBOX_CHAN_PROPERTY
| s
->addr
;
318 qemu_set_irq(s
->mbox_irq
, 0);
321 case MBOX_AS_PENDING
:
326 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
334 static void bcm2835_property_write(void *opaque
, hwaddr offset
,
335 uint64_t value
, unsigned size
)
337 BCM2835PropertyState
*s
= opaque
;
341 /* bcm2835_mbox should check our pending status before pushing */
344 bcm2835_property_mbox_push(s
, value
);
345 qemu_set_irq(s
->mbox_irq
, 1);
349 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
355 static const MemoryRegionOps bcm2835_property_ops
= {
356 .read
= bcm2835_property_read
,
357 .write
= bcm2835_property_write
,
358 .endianness
= DEVICE_NATIVE_ENDIAN
,
359 .valid
.min_access_size
= 4,
360 .valid
.max_access_size
= 4,
363 static const VMStateDescription vmstate_bcm2835_property
= {
364 .name
= TYPE_BCM2835_PROPERTY
,
366 .minimum_version_id
= 1,
367 .fields
= (VMStateField
[]) {
368 VMSTATE_MACADDR(macaddr
, BCM2835PropertyState
),
369 VMSTATE_UINT32(addr
, BCM2835PropertyState
),
370 VMSTATE_BOOL(pending
, BCM2835PropertyState
),
371 VMSTATE_END_OF_LIST()
375 static void bcm2835_property_init(Object
*obj
)
377 BCM2835PropertyState
*s
= BCM2835_PROPERTY(obj
);
379 memory_region_init_io(&s
->iomem
, OBJECT(s
), &bcm2835_property_ops
, s
,
380 TYPE_BCM2835_PROPERTY
, 0x10);
381 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->iomem
);
382 sysbus_init_irq(SYS_BUS_DEVICE(s
), &s
->mbox_irq
);
385 static void bcm2835_property_reset(DeviceState
*dev
)
387 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
392 static void bcm2835_property_realize(DeviceState
*dev
, Error
**errp
)
394 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
397 obj
= object_property_get_link(OBJECT(dev
), "fb", &error_abort
);
398 s
->fbdev
= BCM2835_FB(obj
);
400 obj
= object_property_get_link(OBJECT(dev
), "dma-mr", &error_abort
);
401 s
->dma_mr
= MEMORY_REGION(obj
);
402 address_space_init(&s
->dma_as
, s
->dma_mr
, TYPE_BCM2835_PROPERTY
"-memory");
404 /* TODO: connect to MAC address of USB NIC device, once we emulate it */
405 qemu_macaddr_default_if_unset(&s
->macaddr
);
407 bcm2835_property_reset(dev
);
410 static Property bcm2835_property_props
[] = {
411 DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState
, board_rev
, 0),
412 DEFINE_PROP_END_OF_LIST()
415 static void bcm2835_property_class_init(ObjectClass
*klass
, void *data
)
417 DeviceClass
*dc
= DEVICE_CLASS(klass
);
419 device_class_set_props(dc
, bcm2835_property_props
);
420 dc
->realize
= bcm2835_property_realize
;
421 dc
->vmsd
= &vmstate_bcm2835_property
;
424 static const TypeInfo bcm2835_property_info
= {
425 .name
= TYPE_BCM2835_PROPERTY
,
426 .parent
= TYPE_SYS_BUS_DEVICE
,
427 .instance_size
= sizeof(BCM2835PropertyState
),
428 .class_init
= bcm2835_property_class_init
,
429 .instance_init
= bcm2835_property_init
,
432 static void bcm2835_property_register_types(void)
434 type_register_static(&bcm2835_property_info
);
437 type_init(bcm2835_property_register_types
)