2 * Raspberry Pi emulation (c) 2012 Gregory Estrade
3 * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
5 * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
6 * Written by Andrew Baumann
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
15 #include "hw/sysbus.h"
16 #include "ui/console.h"
18 #define TYPE_BCM2835_FB "bcm2835-fb"
19 #define BCM2835_FB(obj) OBJECT_CHECK(BCM2835FBState, (obj), TYPE_BCM2835_FB)
22 * Configuration information about the fb which the guest can program
23 * via the mailbox property interface.
27 uint32_t xres_virtual, yres_virtual;
28 uint32_t xoffset, yoffset;
40 uint32_t vcram_base, vcram_size;
44 MemoryRegionSection fbsection;
48 bool lock, invalidate, pending;
50 BCM2835FBConfig config;
51 BCM2835FBConfig initial_config;
54 void bcm2835_fb_reconfigure(BCM2835FBState *s, BCM2835FBConfig *newconfig);
57 * bcm2835_fb_get_pitch: return number of bytes per line of the framebuffer
58 * @config: configuration info for the framebuffer
60 * Return the number of bytes per line of the framebuffer, ie the number
61 * that must be added to a pixel address to get the address of the pixel
62 * directly below it on screen.
64 static inline uint32_t bcm2835_fb_get_pitch(BCM2835FBConfig *config)
66 uint32_t xres = MAX(config->xres, config->xres_virtual);
67 return xres * (config->bpp >> 3);
71 * bcm2835_fb_get_size: return total size of framebuffer in bytes
72 * @config: configuration info for the framebuffer
74 static inline uint32_t bcm2835_fb_get_size(BCM2835FBConfig *config)
76 uint32_t yres = MAX(config->yres, config->yres_virtual);
77 return yres * bcm2835_fb_get_pitch(config);
81 * bcm2835_fb_validate_config: check provided config
83 * Validates the configuration information provided by the guest and
84 * adjusts it if necessary.
86 void bcm2835_fb_validate_config(BCM2835FBConfig *config);