2 * Raspberry Pi emulation (c) 2012 Gregory Estrade
3 * This code is licensed under the GNU GPLv2 and later.
6 #include "qemu/osdep.h"
7 #include "hw/misc/bcm2835_property.h"
8 #include "hw/misc/bcm2835_mbox_defs.h"
9 #include "sysemu/dma.h"
11 /* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
13 static void bcm2835_property_mbox_push(BCM2835PropertyState
*s
, uint32_t value
)
21 uint32_t offset
, length
, color
;
22 uint32_t xres
, yres
, xoffset
, yoffset
, bpp
, pixo
, alpha
;
23 uint32_t *newxres
= NULL
, *newyres
= NULL
, *newxoffset
= NULL
,
24 *newyoffset
= NULL
, *newbpp
= NULL
, *newpixo
= NULL
, *newalpha
= NULL
;
30 tot_len
= ldl_le_phys(&s
->dma_as
, value
);
32 /* @(addr + 4) : Buffer response code */
34 while (value
+ 8 <= s
->addr
+ tot_len
) {
35 tag
= ldl_le_phys(&s
->dma_as
, value
);
36 bufsize
= ldl_le_phys(&s
->dma_as
, value
+ 4);
37 /* @(value + 8) : Request/response indicator */
40 case 0x00000000: /* End tag */
42 case 0x00000001: /* Get firmware revision */
43 stl_le_phys(&s
->dma_as
, value
+ 12, 346337);
46 case 0x00010001: /* Get board model */
47 qemu_log_mask(LOG_UNIMP
,
48 "bcm2835_property: %x get board model NYI\n", tag
);
51 case 0x00010002: /* Get board revision */
52 stl_le_phys(&s
->dma_as
, value
+ 12, s
->board_rev
);
55 case 0x00010003: /* Get board MAC address */
56 resplen
= sizeof(s
->macaddr
.a
);
57 dma_memory_write(&s
->dma_as
, value
+ 12, s
->macaddr
.a
, resplen
);
59 case 0x00010004: /* Get board serial */
60 qemu_log_mask(LOG_UNIMP
,
61 "bcm2835_property: %x get board serial NYI\n", tag
);
64 case 0x00010005: /* Get ARM memory */
66 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
68 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_base
);
71 case 0x00010006: /* Get VC memory */
73 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->vcram_base
);
75 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_size
);
78 case 0x00028001: /* Set power state */
79 /* Assume that whatever device they asked for exists,
80 * and we'll just claim we set it to the desired state
82 tmp
= ldl_le_phys(&s
->dma_as
, value
+ 16);
83 stl_le_phys(&s
->dma_as
, value
+ 16, (tmp
& 1));
89 case 0x00030001: /* Get clock state */
90 stl_le_phys(&s
->dma_as
, value
+ 16, 0x1);
94 case 0x00038001: /* Set clock state */
95 qemu_log_mask(LOG_UNIMP
,
96 "bcm2835_property: %x set clock state NYI\n", tag
);
100 case 0x00030002: /* Get clock rate */
101 case 0x00030004: /* Get max clock rate */
102 case 0x00030007: /* Get min clock rate */
103 switch (ldl_le_phys(&s
->dma_as
, value
+ 12)) {
105 stl_le_phys(&s
->dma_as
, value
+ 16, 50000000);
108 stl_le_phys(&s
->dma_as
, value
+ 16, 3000000);
111 stl_le_phys(&s
->dma_as
, value
+ 16, 700000000);
117 case 0x00038002: /* Set clock rate */
118 case 0x00038004: /* Set max clock rate */
119 case 0x00038007: /* Set min clock rate */
120 qemu_log_mask(LOG_UNIMP
,
121 "bcm2835_property: %x set clock rates NYI\n", tag
);
127 case 0x00030006: /* Get temperature */
128 stl_le_phys(&s
->dma_as
, value
+ 16, 25000);
132 case 0x0003000A: /* Get max temperature */
133 stl_le_phys(&s
->dma_as
, value
+ 16, 99000);
139 case 0x00040001: /* Allocate buffer */
140 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->base
);
141 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->size
);
144 case 0x00048001: /* Release buffer */
147 case 0x00040002: /* Blank screen */
150 case 0x00040003: /* Get display width/height */
152 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->xres
);
153 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->yres
);
156 case 0x00044003: /* Test display width/height */
160 case 0x00048003: /* Set display width/height */
162 xres
= ldl_le_phys(&s
->dma_as
, value
+ 12);
164 yres
= ldl_le_phys(&s
->dma_as
, value
+ 16);
168 case 0x00040005: /* Get depth */
169 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->bpp
);
172 case 0x00044005: /* Test depth */
175 case 0x00048005: /* Set depth */
176 bpp
= ldl_le_phys(&s
->dma_as
, value
+ 12);
180 case 0x00040006: /* Get pixel order */
181 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->pixo
);
184 case 0x00044006: /* Test pixel order */
187 case 0x00048006: /* Set pixel order */
188 pixo
= ldl_le_phys(&s
->dma_as
, value
+ 12);
192 case 0x00040007: /* Get alpha */
193 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->alpha
);
196 case 0x00044007: /* Test pixel alpha */
199 case 0x00048007: /* Set alpha */
200 alpha
= ldl_le_phys(&s
->dma_as
, value
+ 12);
204 case 0x00040008: /* Get pitch */
205 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->pitch
);
208 case 0x00040009: /* Get virtual offset */
209 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->xoffset
);
210 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->yoffset
);
213 case 0x00044009: /* Test virtual offset */
216 case 0x00048009: /* Set virtual offset */
217 xoffset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
218 newxoffset
= &xoffset
;
219 yoffset
= ldl_le_phys(&s
->dma_as
, value
+ 16);
220 newyoffset
= &yoffset
;
223 case 0x0004000a: /* Get/Test/Set overscan */
226 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
227 stl_le_phys(&s
->dma_as
, value
+ 16, 0);
228 stl_le_phys(&s
->dma_as
, value
+ 20, 0);
229 stl_le_phys(&s
->dma_as
, value
+ 24, 0);
232 case 0x0004800b: /* Set palette */
233 offset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
234 length
= ldl_le_phys(&s
->dma_as
, value
+ 16);
236 while (n
< length
- offset
) {
237 color
= ldl_le_phys(&s
->dma_as
, value
+ 20 + (n
<< 2));
238 stl_le_phys(&s
->dma_as
,
239 s
->fbdev
->vcram_base
+ ((offset
+ n
) << 2), color
);
242 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
246 case 0x00060001: /* Get DMA channels */
248 stl_le_phys(&s
->dma_as
, value
+ 12, 0x003C);
252 case 0x00050001: /* Get command line */
257 qemu_log_mask(LOG_GUEST_ERROR
,
258 "bcm2835_property: unhandled tag %08x\n", tag
);
266 stl_le_phys(&s
->dma_as
, value
+ 8, (1 << 31) | resplen
);
267 value
+= bufsize
+ 12;
270 /* Reconfigure framebuffer if required */
271 if (newxres
|| newyres
|| newxoffset
|| newyoffset
|| newbpp
|| newpixo
273 bcm2835_fb_reconfigure(s
->fbdev
, newxres
, newyres
, newxoffset
,
274 newyoffset
, newbpp
, newpixo
, newalpha
);
277 /* Buffer response code */
278 stl_le_phys(&s
->dma_as
, s
->addr
+ 4, (1 << 31));
281 static uint64_t bcm2835_property_read(void *opaque
, hwaddr offset
,
284 BCM2835PropertyState
*s
= opaque
;
289 res
= MBOX_CHAN_PROPERTY
| s
->addr
;
291 qemu_set_irq(s
->mbox_irq
, 0);
294 case MBOX_AS_PENDING
:
299 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
307 static void bcm2835_property_write(void *opaque
, hwaddr offset
,
308 uint64_t value
, unsigned size
)
310 BCM2835PropertyState
*s
= opaque
;
314 /* bcm2835_mbox should check our pending status before pushing */
317 bcm2835_property_mbox_push(s
, value
);
318 qemu_set_irq(s
->mbox_irq
, 1);
322 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
328 static const MemoryRegionOps bcm2835_property_ops
= {
329 .read
= bcm2835_property_read
,
330 .write
= bcm2835_property_write
,
331 .endianness
= DEVICE_NATIVE_ENDIAN
,
332 .valid
.min_access_size
= 4,
333 .valid
.max_access_size
= 4,
336 static const VMStateDescription vmstate_bcm2835_property
= {
337 .name
= TYPE_BCM2835_PROPERTY
,
339 .minimum_version_id
= 1,
340 .fields
= (VMStateField
[]) {
341 VMSTATE_MACADDR(macaddr
, BCM2835PropertyState
),
342 VMSTATE_UINT32(addr
, BCM2835PropertyState
),
343 VMSTATE_BOOL(pending
, BCM2835PropertyState
),
344 VMSTATE_END_OF_LIST()
348 static void bcm2835_property_init(Object
*obj
)
350 BCM2835PropertyState
*s
= BCM2835_PROPERTY(obj
);
352 memory_region_init_io(&s
->iomem
, OBJECT(s
), &bcm2835_property_ops
, s
,
353 TYPE_BCM2835_PROPERTY
, 0x10);
354 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->iomem
);
355 sysbus_init_irq(SYS_BUS_DEVICE(s
), &s
->mbox_irq
);
358 static void bcm2835_property_reset(DeviceState
*dev
)
360 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
365 static void bcm2835_property_realize(DeviceState
*dev
, Error
**errp
)
367 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
371 obj
= object_property_get_link(OBJECT(dev
), "fb", &err
);
373 error_setg(errp
, "%s: required fb link not found: %s",
374 __func__
, error_get_pretty(err
));
378 s
->fbdev
= BCM2835_FB(obj
);
380 obj
= object_property_get_link(OBJECT(dev
), "dma-mr", &err
);
382 error_setg(errp
, "%s: required dma-mr link not found: %s",
383 __func__
, error_get_pretty(err
));
387 s
->dma_mr
= MEMORY_REGION(obj
);
388 address_space_init(&s
->dma_as
, s
->dma_mr
, NULL
);
390 /* TODO: connect to MAC address of USB NIC device, once we emulate it */
391 qemu_macaddr_default_if_unset(&s
->macaddr
);
393 bcm2835_property_reset(dev
);
396 static Property bcm2835_property_props
[] = {
397 DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState
, board_rev
, 0),
398 DEFINE_PROP_END_OF_LIST()
401 static void bcm2835_property_class_init(ObjectClass
*klass
, void *data
)
403 DeviceClass
*dc
= DEVICE_CLASS(klass
);
405 dc
->props
= bcm2835_property_props
;
406 dc
->realize
= bcm2835_property_realize
;
407 dc
->vmsd
= &vmstate_bcm2835_property
;
410 static TypeInfo bcm2835_property_info
= {
411 .name
= TYPE_BCM2835_PROPERTY
,
412 .parent
= TYPE_SYS_BUS_DEVICE
,
413 .instance_size
= sizeof(BCM2835PropertyState
),
414 .class_init
= bcm2835_property_class_init
,
415 .instance_init
= bcm2835_property_init
,
418 static void bcm2835_property_register_types(void)
420 type_register_static(&bcm2835_property_info
);
423 type_init(bcm2835_property_register_types
)