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 "qapi/error.h"
8 #include "hw/misc/bcm2835_property.h"
9 #include "hw/misc/bcm2835_mbox_defs.h"
10 #include "sysemu/dma.h"
12 /* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
14 static void bcm2835_property_mbox_push(BCM2835PropertyState
*s
, uint32_t value
)
22 uint32_t offset
, length
, color
;
23 uint32_t xres
, yres
, xoffset
, yoffset
, bpp
, pixo
, alpha
;
24 uint32_t *newxres
= NULL
, *newyres
= NULL
, *newxoffset
= NULL
,
25 *newyoffset
= NULL
, *newbpp
= NULL
, *newpixo
= NULL
, *newalpha
= NULL
;
31 tot_len
= ldl_le_phys(&s
->dma_as
, value
);
33 /* @(addr + 4) : Buffer response code */
35 while (value
+ 8 <= s
->addr
+ tot_len
) {
36 tag
= ldl_le_phys(&s
->dma_as
, value
);
37 bufsize
= ldl_le_phys(&s
->dma_as
, value
+ 4);
38 /* @(value + 8) : Request/response indicator */
41 case 0x00000000: /* End tag */
43 case 0x00000001: /* Get firmware revision */
44 stl_le_phys(&s
->dma_as
, value
+ 12, 346337);
47 case 0x00010001: /* Get board model */
48 qemu_log_mask(LOG_UNIMP
,
49 "bcm2835_property: %x get board model NYI\n", tag
);
52 case 0x00010002: /* Get board revision */
53 stl_le_phys(&s
->dma_as
, value
+ 12, s
->board_rev
);
56 case 0x00010003: /* Get board MAC address */
57 resplen
= sizeof(s
->macaddr
.a
);
58 dma_memory_write(&s
->dma_as
, value
+ 12, s
->macaddr
.a
, resplen
);
60 case 0x00010004: /* Get board serial */
61 qemu_log_mask(LOG_UNIMP
,
62 "bcm2835_property: %x get board serial NYI\n", tag
);
65 case 0x00010005: /* Get ARM memory */
67 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
69 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_base
);
72 case 0x00010006: /* Get VC memory */
74 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->vcram_base
);
76 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_size
);
79 case 0x00028001: /* Set power state */
80 /* Assume that whatever device they asked for exists,
81 * and we'll just claim we set it to the desired state
83 tmp
= ldl_le_phys(&s
->dma_as
, value
+ 16);
84 stl_le_phys(&s
->dma_as
, value
+ 16, (tmp
& 1));
90 case 0x00030001: /* Get clock state */
91 stl_le_phys(&s
->dma_as
, value
+ 16, 0x1);
95 case 0x00038001: /* Set clock state */
96 qemu_log_mask(LOG_UNIMP
,
97 "bcm2835_property: %x set clock state NYI\n", tag
);
101 case 0x00030002: /* Get clock rate */
102 case 0x00030004: /* Get max clock rate */
103 case 0x00030007: /* Get min clock rate */
104 switch (ldl_le_phys(&s
->dma_as
, value
+ 12)) {
106 stl_le_phys(&s
->dma_as
, value
+ 16, 50000000);
109 stl_le_phys(&s
->dma_as
, value
+ 16, 3000000);
112 stl_le_phys(&s
->dma_as
, value
+ 16, 700000000);
118 case 0x00038002: /* Set clock rate */
119 case 0x00038004: /* Set max clock rate */
120 case 0x00038007: /* Set min clock rate */
121 qemu_log_mask(LOG_UNIMP
,
122 "bcm2835_property: %x set clock rates NYI\n", tag
);
128 case 0x00030006: /* Get temperature */
129 stl_le_phys(&s
->dma_as
, value
+ 16, 25000);
133 case 0x0003000A: /* Get max temperature */
134 stl_le_phys(&s
->dma_as
, value
+ 16, 99000);
140 case 0x00040001: /* Allocate buffer */
141 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->base
);
142 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->size
);
145 case 0x00048001: /* Release buffer */
148 case 0x00040002: /* Blank screen */
151 case 0x00040003: /* Get display width/height */
153 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->xres
);
154 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->yres
);
157 case 0x00044003: /* Test display width/height */
161 case 0x00048003: /* Set display width/height */
163 xres
= ldl_le_phys(&s
->dma_as
, value
+ 12);
165 yres
= ldl_le_phys(&s
->dma_as
, value
+ 16);
169 case 0x00040005: /* Get depth */
170 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->bpp
);
173 case 0x00044005: /* Test depth */
176 case 0x00048005: /* Set depth */
177 bpp
= ldl_le_phys(&s
->dma_as
, value
+ 12);
181 case 0x00040006: /* Get pixel order */
182 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->pixo
);
185 case 0x00044006: /* Test pixel order */
188 case 0x00048006: /* Set pixel order */
189 pixo
= ldl_le_phys(&s
->dma_as
, value
+ 12);
193 case 0x00040007: /* Get alpha */
194 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->alpha
);
197 case 0x00044007: /* Test pixel alpha */
200 case 0x00048007: /* Set alpha */
201 alpha
= ldl_le_phys(&s
->dma_as
, value
+ 12);
205 case 0x00040008: /* Get pitch */
206 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->pitch
);
209 case 0x00040009: /* Get virtual offset */
210 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->xoffset
);
211 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->yoffset
);
214 case 0x00044009: /* Test virtual offset */
217 case 0x00048009: /* Set virtual offset */
218 xoffset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
219 newxoffset
= &xoffset
;
220 yoffset
= ldl_le_phys(&s
->dma_as
, value
+ 16);
221 newyoffset
= &yoffset
;
224 case 0x0004000a: /* Get/Test/Set overscan */
227 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
228 stl_le_phys(&s
->dma_as
, value
+ 16, 0);
229 stl_le_phys(&s
->dma_as
, value
+ 20, 0);
230 stl_le_phys(&s
->dma_as
, value
+ 24, 0);
233 case 0x0004800b: /* Set palette */
234 offset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
235 length
= ldl_le_phys(&s
->dma_as
, value
+ 16);
237 while (n
< length
- offset
) {
238 color
= ldl_le_phys(&s
->dma_as
, value
+ 20 + (n
<< 2));
239 stl_le_phys(&s
->dma_as
,
240 s
->fbdev
->vcram_base
+ ((offset
+ n
) << 2), color
);
243 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
247 case 0x00060001: /* Get DMA channels */
249 stl_le_phys(&s
->dma_as
, value
+ 12, 0x003C);
253 case 0x00050001: /* Get command line */
258 qemu_log_mask(LOG_GUEST_ERROR
,
259 "bcm2835_property: unhandled tag %08x\n", tag
);
267 stl_le_phys(&s
->dma_as
, value
+ 8, (1 << 31) | resplen
);
268 value
+= bufsize
+ 12;
271 /* Reconfigure framebuffer if required */
272 if (newxres
|| newyres
|| newxoffset
|| newyoffset
|| newbpp
|| newpixo
274 bcm2835_fb_reconfigure(s
->fbdev
, newxres
, newyres
, newxoffset
,
275 newyoffset
, newbpp
, newpixo
, newalpha
);
278 /* Buffer response code */
279 stl_le_phys(&s
->dma_as
, s
->addr
+ 4, (1 << 31));
282 static uint64_t bcm2835_property_read(void *opaque
, hwaddr offset
,
285 BCM2835PropertyState
*s
= opaque
;
290 res
= MBOX_CHAN_PROPERTY
| s
->addr
;
292 qemu_set_irq(s
->mbox_irq
, 0);
295 case MBOX_AS_PENDING
:
300 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
308 static void bcm2835_property_write(void *opaque
, hwaddr offset
,
309 uint64_t value
, unsigned size
)
311 BCM2835PropertyState
*s
= opaque
;
315 /* bcm2835_mbox should check our pending status before pushing */
318 bcm2835_property_mbox_push(s
, value
);
319 qemu_set_irq(s
->mbox_irq
, 1);
323 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
329 static const MemoryRegionOps bcm2835_property_ops
= {
330 .read
= bcm2835_property_read
,
331 .write
= bcm2835_property_write
,
332 .endianness
= DEVICE_NATIVE_ENDIAN
,
333 .valid
.min_access_size
= 4,
334 .valid
.max_access_size
= 4,
337 static const VMStateDescription vmstate_bcm2835_property
= {
338 .name
= TYPE_BCM2835_PROPERTY
,
340 .minimum_version_id
= 1,
341 .fields
= (VMStateField
[]) {
342 VMSTATE_MACADDR(macaddr
, BCM2835PropertyState
),
343 VMSTATE_UINT32(addr
, BCM2835PropertyState
),
344 VMSTATE_BOOL(pending
, BCM2835PropertyState
),
345 VMSTATE_END_OF_LIST()
349 static void bcm2835_property_init(Object
*obj
)
351 BCM2835PropertyState
*s
= BCM2835_PROPERTY(obj
);
353 memory_region_init_io(&s
->iomem
, OBJECT(s
), &bcm2835_property_ops
, s
,
354 TYPE_BCM2835_PROPERTY
, 0x10);
355 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->iomem
);
356 sysbus_init_irq(SYS_BUS_DEVICE(s
), &s
->mbox_irq
);
359 static void bcm2835_property_reset(DeviceState
*dev
)
361 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
366 static void bcm2835_property_realize(DeviceState
*dev
, Error
**errp
)
368 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
372 obj
= object_property_get_link(OBJECT(dev
), "fb", &err
);
374 error_setg(errp
, "%s: required fb link not found: %s",
375 __func__
, error_get_pretty(err
));
379 s
->fbdev
= BCM2835_FB(obj
);
381 obj
= object_property_get_link(OBJECT(dev
), "dma-mr", &err
);
383 error_setg(errp
, "%s: required dma-mr link not found: %s",
384 __func__
, error_get_pretty(err
));
388 s
->dma_mr
= MEMORY_REGION(obj
);
389 address_space_init(&s
->dma_as
, s
->dma_mr
, NULL
);
391 /* TODO: connect to MAC address of USB NIC device, once we emulate it */
392 qemu_macaddr_default_if_unset(&s
->macaddr
);
394 bcm2835_property_reset(dev
);
397 static Property bcm2835_property_props
[] = {
398 DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState
, board_rev
, 0),
399 DEFINE_PROP_END_OF_LIST()
402 static void bcm2835_property_class_init(ObjectClass
*klass
, void *data
)
404 DeviceClass
*dc
= DEVICE_CLASS(klass
);
406 dc
->props
= bcm2835_property_props
;
407 dc
->realize
= bcm2835_property_realize
;
408 dc
->vmsd
= &vmstate_bcm2835_property
;
411 static TypeInfo bcm2835_property_info
= {
412 .name
= TYPE_BCM2835_PROPERTY
,
413 .parent
= TYPE_SYS_BUS_DEVICE
,
414 .instance_size
= sizeof(BCM2835PropertyState
),
415 .class_init
= bcm2835_property_class_init
,
416 .instance_init
= bcm2835_property_init
,
419 static void bcm2835_property_register_types(void)
421 type_register_static(&bcm2835_property_info
);
424 type_init(bcm2835_property_register_types
)