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995b30179b
qemu/hw/display
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Gerd Hoffmann 995b30179b hw/display: add ramfb, a simple boot framebuffer living in guest ram 
The boot framebuffer is expected to be configured by the firmware, so it
uses fw_cfg as interface.  Initialization goes as follows:

  (1) Check whenever etc/ramfb is present.
  (2) Allocate framebuffer from RAM.
  (3) Fill struct RAMFBCfg, write it to etc/ramfb.

Done.  You can write stuff to the framebuffer now, and it should appear
automagically on the screen.

Note that this isn't very efficient because it does a full display
update on each refresh.  No dirty tracking.  Dirty tracking would have
to be active for the whole ram slot, so that wouldn't be very efficient
either.  For a boot display which is active for a short time only this
isn't a big deal.  As permanent guest display something better should be
used (if possible).

This is the ramfb core code.  Some windup is needed for display devices
which want have a ramfb boot display.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 20180613122948.18149-2-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-06-18 11:22:15 +02:00
..
ads7846.c ssi: change ssi_slave_init to be a realize ops 2016-07-04 13:15:22 +01:00
bcm2835_fb.c display: use local path for local headers 2018-06-01 19:20:37 +03:00
blizzard.c Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
bochs-display.c bochs-display: add missing break 2018-06-04 09:44:10 +02:00
cg3.c memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshot 2018-02-13 16:15:09 +01:00
cirrus_vga_rop2.h cirrus: fix PUTPIXEL macro 2017-03-27 12:14:45 +02:00
cirrus_vga_rop.h cirrus: fix off-by-one in cirrus_bitblt_rop_bkwd_transp_*_16 2017-03-17 10:23:44 +01:00
cirrus_vga.c hw/display/vga: "vga_int.h" requires "ui/console.h" 2017-12-18 17:07:02 +03:00
dpcd.c maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
exynos4210_fimd.c memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshot 2018-02-13 16:15:09 +01:00
framebuffer.c memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshot 2018-02-13 16:15:09 +01:00
framebuffer.h framebuffer: set DIRTY_MEMORY_VGA on RAM that is used for the framebuffer 2015-07-24 13:57:45 +02:00
g364fb.c g364fb: fix DirtyBitmapSnapshot leak 2018-03-06 14:00:58 +01:00
jazz_led.c jazz_led: fix bad snprintf 2017-05-10 10:19:24 +03:00
Makefile.objs hw/display: add ramfb, a simple boot framebuffer living in guest ram 2018-06-18 11:22:15 +02:00
milkymist-tmu2.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
milkymist-vgafb_template.h
milkymist-vgafb.c milkymist: update specification URLs 2016-06-20 18:12:04 +02:00
omap_dss.c Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
omap_lcd_template.h omap_lcdc: Remove support for DEPTH != 32 2016-05-12 13:22:24 +01:00
omap_lcdc.c omap_lcdc: Remove support for DEPTH != 32 2016-05-12 13:22:24 +01:00
pl110_template.h
pl110.c pl110: Implement vertical compare/next base interrupts 2018-01-25 11:45:30 +00:00
pxa2xx_lcd.c Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
pxa2xx_template.h
qxl-logger.c hw/display: Clean up includes 2016-01-29 15:07:24 +00:00
qxl-render.c qxl: fix local renderer crash 2018-05-07 11:47:57 +02:00
qxl.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
qxl.h Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
ramfb.c hw/display: add ramfb, a simple boot framebuffer living in guest ram 2018-06-18 11:22:15 +02:00
sii9022.c hw/sii9022: Add support for Silicon Image SII9022 2018-03-01 11:13:36 +00:00
sm501_template.h sm501: Misc clean ups 2017-04-24 12:32:12 +01:00
sm501.c hw: Do not include "exec/address-spaces.h" if it is not necessary 2018-06-01 14:15:10 +02:00
ssd0303.c hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init 2018-06-01 15:14:31 +02:00
ssd0323.c vmstateify ssd0323 display 2016-09-22 18:13:08 +01:00
tc6393xb_template.h
tc6393xb.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
tcx.c memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshot 2018-02-13 16:15:09 +01:00
trace-events hw/sii9022: Add support for Silicon Image SII9022 2018-03-01 11:13:36 +00:00
vga_int.h vga: move bochs vbe defines to header file 2018-05-24 10:42:13 +02:00
vga_regs.h hw/display/vga: "vga.h" only contains registers defs, rename it "vga_regs.h" 2017-12-18 17:07:02 +03:00
vga-helpers.h vga: stop passing pointers to vga_draw_line* functions 2017-09-01 13:52:43 +02:00
vga-isa-mm.c hw/display/vga: extract public API from i386/pc to "hw/display/vga.h" 2017-12-18 17:07:02 +03:00
vga-isa.c hw/display/vga: extract public API from i386/pc to "hw/display/vga.h" 2017-12-18 17:07:02 +03:00
vga-pci.c vga-pci: use PCI_VGA_MMIO_SIZE 2018-05-24 10:42:13 +02:00
vga.c vga: cleanup surface handling 2018-06-04 09:44:10 +02:00
virtio-gpu-3d.c virtio-gpu-3d: add support for second capability set (v4) 2018-02-26 13:41:34 +01:00
virtio-gpu-pci.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
virtio-gpu.c virtio-gpu-3d: add support for second capability set (v4) 2018-02-26 13:41:34 +01:00
virtio-vga.c hw/display/vga: "vga_int.h" requires "ui/console.h" 2017-12-18 17:07:02 +03:00
vmware_vga.c hw/display/vga: "vga_int.h" requires "ui/console.h" 2017-12-18 17:07:02 +03:00
xenfb.c Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
xlnx_dp.c object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence 2018-06-12 12:07:30 +02:00