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bcm2835_fb: add framebuffer device for Raspberry Pi

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The framebuffer occupies the upper portion of memory (64MiB by
default), but it can only be controlled/configured via a system
mailbox or property channel (to be added by a subsequent patch).

Signed-off-by: Grégory ESTRADE <gregory.estrade@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1457467526-8840-4-git-send-email-Andrew.Baumann@microsoft.com
[AB: added Windows (BGR) support and cleanup/refactoring for upstream submission]
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Grégory ESTRADE 2016-03-16 17:06:01 +00:00 • committed by Peter Maydell
parent 97398d900c
commit 5e9c2a8dac
7 changed files with 517 additions and 2 deletions
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2
include/hw/arm/bcm2835_peripherals.h
View file

@ -15,6 +15,7 @@
#include "exec/address-spaces.h"
#include "hw/sysbus.h"
#include "hw/char/bcm2835_aux.h"
#include "hw/display/bcm2835_fb.h"
#include "hw/intc/bcm2835_ic.h"
#include "hw/misc/bcm2835_property.h"
#include "hw/misc/bcm2835_mbox.h"
@ -35,6 +36,7 @@ typedef struct BCM2835PeripheralState {
SysBusDevice *uart0;
BCM2835AuxState aux;
BCM2835FBState fb;
BCM2835ICState ic;
BCM2835PropertyState property;
BCM2835MboxState mboxes;

47
include/hw/display/bcm2835_fb.h Normal file
View file

@ -0,0 +1,47 @@
/*
* Raspberry Pi emulation (c) 2012 Gregory Estrade
* Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
*
* Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
* Written by Andrew Baumann
*
* This code is licensed under the GNU GPLv2 and later.
*/
#ifndef BCM2835_FB_H
#define BCM2835_FB_H
#include "hw/sysbus.h"
#include "exec/address-spaces.h"
#include "ui/console.h"
#define TYPE_BCM2835_FB "bcm2835-fb"
#define BCM2835_FB(obj) OBJECT_CHECK(BCM2835FBState, (obj), TYPE_BCM2835_FB)
typedef struct {
/*< private >*/
SysBusDevice busdev;
/*< public >*/
uint32_t vcram_base, vcram_size;
MemoryRegion *dma_mr;
AddressSpace dma_as;
MemoryRegion iomem;
MemoryRegionSection fbsection;
QemuConsole *con;
qemu_irq mbox_irq;
bool lock, invalidate, pending;
uint32_t xres, yres;
uint32_t xres_virtual, yres_virtual;
uint32_t xoffset, yoffset;
uint32_t bpp;
uint32_t base, pitch, size;
uint32_t pixo, alpha;
} BCM2835FBState;
void bcm2835_fb_reconfigure(BCM2835FBState *s, uint32_t *xres, uint32_t *yres,
uint32_t *xoffset, uint32_t *yoffset, uint32_t *bpp,
uint32_t *pixo, uint32_t *alpha);
#endif