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 #include "qemu/module.h"
14 /* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
16 static void bcm2835_property_mbox_push(BCM2835PropertyState
*s
, uint32_t value
)
24 uint32_t offset
, length
, color
;
27 * Copy the current state of the framebuffer config; we will update
28 * this copy as we process tags and then ask the framebuffer to use
31 BCM2835FBConfig fbconfig
= s
->fbdev
->config
;
32 bool fbconfig_updated
= false;
38 tot_len
= ldl_le_phys(&s
->dma_as
, value
);
40 /* @(addr + 4) : Buffer response code */
42 while (value
+ 8 <= s
->addr
+ tot_len
) {
43 tag
= ldl_le_phys(&s
->dma_as
, value
);
44 bufsize
= ldl_le_phys(&s
->dma_as
, value
+ 4);
45 /* @(value + 8) : Request/response indicator */
48 case 0x00000000: /* End tag */
50 case 0x00000001: /* Get firmware revision */
51 stl_le_phys(&s
->dma_as
, value
+ 12, 346337);
54 case 0x00010001: /* Get board model */
55 qemu_log_mask(LOG_UNIMP
,
56 "bcm2835_property: %x get board model NYI\n", tag
);
59 case 0x00010002: /* Get board revision */
60 stl_le_phys(&s
->dma_as
, value
+ 12, s
->board_rev
);
63 case 0x00010003: /* Get board MAC address */
64 resplen
= sizeof(s
->macaddr
.a
);
65 dma_memory_write(&s
->dma_as
, value
+ 12, s
->macaddr
.a
, resplen
);
67 case 0x00010004: /* Get board serial */
68 qemu_log_mask(LOG_UNIMP
,
69 "bcm2835_property: %x get board serial NYI\n", tag
);
72 case 0x00010005: /* Get ARM memory */
74 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
76 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_base
);
79 case 0x00010006: /* Get VC memory */
81 stl_le_phys(&s
->dma_as
, value
+ 12, s
->fbdev
->vcram_base
);
83 stl_le_phys(&s
->dma_as
, value
+ 16, s
->fbdev
->vcram_size
);
86 case 0x00028001: /* Set power state */
87 /* Assume that whatever device they asked for exists,
88 * and we'll just claim we set it to the desired state
90 tmp
= ldl_le_phys(&s
->dma_as
, value
+ 16);
91 stl_le_phys(&s
->dma_as
, value
+ 16, (tmp
& 1));
97 case 0x00030001: /* Get clock state */
98 stl_le_phys(&s
->dma_as
, value
+ 16, 0x1);
102 case 0x00038001: /* Set clock state */
103 qemu_log_mask(LOG_UNIMP
,
104 "bcm2835_property: %x set clock state NYI\n", tag
);
108 case 0x00030002: /* Get clock rate */
109 case 0x00030004: /* Get max clock rate */
110 case 0x00030007: /* Get min clock rate */
111 switch (ldl_le_phys(&s
->dma_as
, value
+ 12)) {
113 stl_le_phys(&s
->dma_as
, value
+ 16, 50000000);
116 stl_le_phys(&s
->dma_as
, value
+ 16, 3000000);
119 stl_le_phys(&s
->dma_as
, value
+ 16, 700000000);
125 case 0x00038002: /* Set clock rate */
126 case 0x00038004: /* Set max clock rate */
127 case 0x00038007: /* Set min clock rate */
128 qemu_log_mask(LOG_UNIMP
,
129 "bcm2835_property: %x set clock rates NYI\n", tag
);
135 case 0x00030006: /* Get temperature */
136 stl_le_phys(&s
->dma_as
, value
+ 16, 25000);
140 case 0x0003000A: /* Get max temperature */
141 stl_le_phys(&s
->dma_as
, value
+ 16, 99000);
147 case 0x00040001: /* Allocate buffer */
148 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.base
);
149 stl_le_phys(&s
->dma_as
, value
+ 16,
150 bcm2835_fb_get_size(&fbconfig
));
153 case 0x00048001: /* Release buffer */
156 case 0x00040002: /* Blank screen */
159 case 0x00044003: /* Test physical display width/height */
160 case 0x00044004: /* Test virtual display width/height */
163 case 0x00048003: /* Set physical display width/height */
164 fbconfig
.xres
= ldl_le_phys(&s
->dma_as
, value
+ 12);
165 fbconfig
.yres
= ldl_le_phys(&s
->dma_as
, value
+ 16);
166 bcm2835_fb_validate_config(&fbconfig
);
167 fbconfig_updated
= true;
169 case 0x00040003: /* Get physical display width/height */
170 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xres
);
171 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yres
);
174 case 0x00048004: /* Set virtual display width/height */
175 fbconfig
.xres_virtual
= ldl_le_phys(&s
->dma_as
, value
+ 12);
176 fbconfig
.yres_virtual
= ldl_le_phys(&s
->dma_as
, value
+ 16);
177 bcm2835_fb_validate_config(&fbconfig
);
178 fbconfig_updated
= true;
180 case 0x00040004: /* Get virtual display width/height */
181 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xres_virtual
);
182 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yres_virtual
);
185 case 0x00044005: /* Test depth */
188 case 0x00048005: /* Set depth */
189 fbconfig
.bpp
= ldl_le_phys(&s
->dma_as
, value
+ 12);
190 bcm2835_fb_validate_config(&fbconfig
);
191 fbconfig_updated
= true;
193 case 0x00040005: /* Get depth */
194 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.bpp
);
197 case 0x00044006: /* Test pixel order */
200 case 0x00048006: /* Set pixel order */
201 fbconfig
.pixo
= ldl_le_phys(&s
->dma_as
, value
+ 12);
202 bcm2835_fb_validate_config(&fbconfig
);
203 fbconfig_updated
= true;
205 case 0x00040006: /* Get pixel order */
206 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.pixo
);
209 case 0x00044007: /* Test pixel alpha */
212 case 0x00048007: /* Set alpha */
213 fbconfig
.alpha
= ldl_le_phys(&s
->dma_as
, value
+ 12);
214 bcm2835_fb_validate_config(&fbconfig
);
215 fbconfig_updated
= true;
217 case 0x00040007: /* Get alpha */
218 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.alpha
);
221 case 0x00040008: /* Get pitch */
222 stl_le_phys(&s
->dma_as
, value
+ 12,
223 bcm2835_fb_get_pitch(&fbconfig
));
226 case 0x00044009: /* Test virtual offset */
229 case 0x00048009: /* Set virtual offset */
230 fbconfig
.xoffset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
231 fbconfig
.yoffset
= ldl_le_phys(&s
->dma_as
, value
+ 16);
232 bcm2835_fb_validate_config(&fbconfig
);
233 fbconfig_updated
= true;
235 case 0x00040009: /* Get virtual offset */
236 stl_le_phys(&s
->dma_as
, value
+ 12, fbconfig
.xoffset
);
237 stl_le_phys(&s
->dma_as
, value
+ 16, fbconfig
.yoffset
);
240 case 0x0004000a: /* Get/Test/Set overscan */
243 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
244 stl_le_phys(&s
->dma_as
, value
+ 16, 0);
245 stl_le_phys(&s
->dma_as
, value
+ 20, 0);
246 stl_le_phys(&s
->dma_as
, value
+ 24, 0);
249 case 0x0004800b: /* Set palette */
250 offset
= ldl_le_phys(&s
->dma_as
, value
+ 12);
251 length
= ldl_le_phys(&s
->dma_as
, value
+ 16);
253 while (n
< length
- offset
) {
254 color
= ldl_le_phys(&s
->dma_as
, value
+ 20 + (n
<< 2));
255 stl_le_phys(&s
->dma_as
,
256 s
->fbdev
->vcram_base
+ ((offset
+ n
) << 2), color
);
259 stl_le_phys(&s
->dma_as
, value
+ 12, 0);
263 case 0x00060001: /* Get DMA channels */
265 stl_le_phys(&s
->dma_as
, value
+ 12, 0x003C);
269 case 0x00050001: /* Get command line */
274 qemu_log_mask(LOG_GUEST_ERROR
,
275 "bcm2835_property: unhandled tag %08x\n", tag
);
283 stl_le_phys(&s
->dma_as
, value
+ 8, (1 << 31) | resplen
);
284 value
+= bufsize
+ 12;
287 /* Reconfigure framebuffer if required */
288 if (fbconfig_updated
) {
289 bcm2835_fb_reconfigure(s
->fbdev
, &fbconfig
);
292 /* Buffer response code */
293 stl_le_phys(&s
->dma_as
, s
->addr
+ 4, (1 << 31));
296 static uint64_t bcm2835_property_read(void *opaque
, hwaddr offset
,
299 BCM2835PropertyState
*s
= opaque
;
304 res
= MBOX_CHAN_PROPERTY
| s
->addr
;
306 qemu_set_irq(s
->mbox_irq
, 0);
309 case MBOX_AS_PENDING
:
314 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
322 static void bcm2835_property_write(void *opaque
, hwaddr offset
,
323 uint64_t value
, unsigned size
)
325 BCM2835PropertyState
*s
= opaque
;
329 /* bcm2835_mbox should check our pending status before pushing */
332 bcm2835_property_mbox_push(s
, value
);
333 qemu_set_irq(s
->mbox_irq
, 1);
337 qemu_log_mask(LOG_GUEST_ERROR
, "%s: Bad offset %"HWADDR_PRIx
"\n",
343 static const MemoryRegionOps bcm2835_property_ops
= {
344 .read
= bcm2835_property_read
,
345 .write
= bcm2835_property_write
,
346 .endianness
= DEVICE_NATIVE_ENDIAN
,
347 .valid
.min_access_size
= 4,
348 .valid
.max_access_size
= 4,
351 static const VMStateDescription vmstate_bcm2835_property
= {
352 .name
= TYPE_BCM2835_PROPERTY
,
354 .minimum_version_id
= 1,
355 .fields
= (VMStateField
[]) {
356 VMSTATE_MACADDR(macaddr
, BCM2835PropertyState
),
357 VMSTATE_UINT32(addr
, BCM2835PropertyState
),
358 VMSTATE_BOOL(pending
, BCM2835PropertyState
),
359 VMSTATE_END_OF_LIST()
363 static void bcm2835_property_init(Object
*obj
)
365 BCM2835PropertyState
*s
= BCM2835_PROPERTY(obj
);
367 memory_region_init_io(&s
->iomem
, OBJECT(s
), &bcm2835_property_ops
, s
,
368 TYPE_BCM2835_PROPERTY
, 0x10);
369 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->iomem
);
370 sysbus_init_irq(SYS_BUS_DEVICE(s
), &s
->mbox_irq
);
373 static void bcm2835_property_reset(DeviceState
*dev
)
375 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
380 static void bcm2835_property_realize(DeviceState
*dev
, Error
**errp
)
382 BCM2835PropertyState
*s
= BCM2835_PROPERTY(dev
);
386 obj
= object_property_get_link(OBJECT(dev
), "fb", &err
);
388 error_setg(errp
, "%s: required fb link not found: %s",
389 __func__
, error_get_pretty(err
));
393 s
->fbdev
= BCM2835_FB(obj
);
395 obj
= object_property_get_link(OBJECT(dev
), "dma-mr", &err
);
397 error_setg(errp
, "%s: required dma-mr link not found: %s",
398 __func__
, error_get_pretty(err
));
402 s
->dma_mr
= MEMORY_REGION(obj
);
403 address_space_init(&s
->dma_as
, s
->dma_mr
, NULL
);
405 /* TODO: connect to MAC address of USB NIC device, once we emulate it */
406 qemu_macaddr_default_if_unset(&s
->macaddr
);
408 bcm2835_property_reset(dev
);
411 static Property bcm2835_property_props
[] = {
412 DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState
, board_rev
, 0),
413 DEFINE_PROP_END_OF_LIST()
416 static void bcm2835_property_class_init(ObjectClass
*klass
, void *data
)
418 DeviceClass
*dc
= DEVICE_CLASS(klass
);
420 dc
->props
= bcm2835_property_props
;
421 dc
->realize
= bcm2835_property_realize
;
422 dc
->vmsd
= &vmstate_bcm2835_property
;
425 static TypeInfo bcm2835_property_info
= {
426 .name
= TYPE_BCM2835_PROPERTY
,
427 .parent
= TYPE_SYS_BUS_DEVICE
,
428 .instance_size
= sizeof(BCM2835PropertyState
),
429 .class_init
= bcm2835_property_class_init
,
430 .instance_init
= bcm2835_property_init
,
433 static void bcm2835_property_register_types(void)
435 type_register_static(&bcm2835_property_info
);
438 type_init(bcm2835_property_register_types
)