haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
qemu-patch-raspberry4/hw
History
Gerd Hoffmann 765c942908 hw/display: add new bochs-display device 
After writing up the virtual mdev device emulating a display supporting
the bochs vbe dispi interface (mbochs.ko) and seeing how simple it
actually is I've figured that would be useful for qemu too.

So, here it is, -device bochs-display.  It is basically -device VGA
without legacy vga emulation.  PCI bar 0 is the framebuffer, PCI bar 2
is mmio with the registers.  The vga registers are simply not there
though, neither in the legacy ioport location nor in the mmio bar.
Consequently it is PCI class DISPLAY_OTHER not DISPLAY_VGA.

So there is no text mode emulation, no weird video modes (planar,
256color palette), no memory window at 0xa0000.  Just a linear
framebuffer in the pci memory bar.  And the amount of code to emulate
this (and therefore the attack surface) is an order of magnitude smaller
when compared to vga emulation.

Compatibility wise it works with OVMF (latest git master).
The bochs-drm.ko linux kernel module can handle it just fine too.
So UEFI guests should not see any functional difference to VGA.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180522165058.15404-4-kraxel@redhat.com
2018-05-24 10:42:13 +02:00
..
9pfs 9p: add trace event for v9fs_setattr() 2018-05-02 08:59:24 +02:00
acpi acpi: fix a comment about aml_call0() 2018-05-20 08:58:58 +03:00
adc Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
alpha hw/alpha/dp264: Use the TYPE_SMC37C669_SUPERIO 2018-03-12 16:12:49 +01:00
arm Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
audio hw/audio: Fix crashes when devices are used on ISA bus without DMA 2018-03-26 14:37:13 +02:00
block Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
bt hw/bt: Replace fprintf(stderr, "*\n" with error_report() 2018-01-22 09:51:00 +01:00
char hw/char/cmsdk-apb-uart.c: Accept more input after character read 2018-05-04 18:05:50 +01:00
core -----BEGIN PGP SIGNATURE----- 2018-05-14 14:15:27 +01:00
cpu hw: use "qemu/osdep.h" as first #include in source files 2017-12-18 17:07:02 +03:00
cris Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
display hw/display: add new bochs-display device 2018-05-24 10:42:13 +02:00
dma xlnx-zdma: Add a model of the Xilinx ZynqMP generic DMA 2018-05-18 17:48:07 +01:00
gpio Replace all occurances of __FUNCTION__ with __func__ 2018-01-22 09:46:18 +01:00
hppa Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
i2c hw/i2c-ddc: Do not fail writes 2018-03-01 11:05:45 +00:00
i386 pc: add 2.13 machine types 2018-05-15 11:33:33 -03:00
ide hw/ide/ahci: Keep ALLWINNER_AHCI() macro internal 2018-05-20 08:37:53 +03:00
input ps2: Fix mouse stream corruption due to lost data 2018-05-15 11:31:33 +02:00
intc heathrow: remove obsolete heathow_init() function 2018-04-27 18:05:22 +10:00
ipack pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices 2017-10-15 05:54:43 +03:00
ipmi qapi: Empty out qapi-schema.json 2018-03-02 13:45:50 -06:00
isa Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
lm32 Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
m68k hw/m68k/mcf5208: Fix trivial typo in board description 2018-05-01 15:37:54 +02:00
mem pc-dimm: fix error messages if no slots were defined 2018-05-11 14:33:40 +02:00
microblaze Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
mips serial-isa: Use MAX_ISA_SERIAL_PORTS instead of MAX_SERIAL_PORTS 2018-04-26 13:57:00 +01:00
misc Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
moxie Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
net Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
nios2 Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
nvram Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
openrisc Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
pci virtio,vhost,pci,pc: features, cleanups 2018-03-20 15:48:34 +00:00
pci-bridge virtio,vhost,pci,pc: features, fixes and cleanups 2018-02-13 16:33:31 +00:00
pci-host uninorth: create new uninorth device 2018-05-04 15:00:37 +10:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
rdma hw/rdma: Fix possible out of bounds access to port GID index 2018-05-03 20:52:29 +03:00
riscv RISC-V: QEMU 2.13 Minor Fixes 2018-05-10 10:25:15 +01:00
s390x s390x: refactor reset/reipl handling 2018-05-14 17:10:02 +02:00
scsi hw/scsi: support SCSI-2 passthrough without PI 2018-04-09 16:36:39 +02:00
sd sdcard: Correct CRC16 offset in sd_function_switch() 2018-05-15 14:58:44 +01:00
sh4 Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
smbios Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
sparc Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
sparc64 serial-isa: Use MAX_ISA_SERIAL_PORTS instead of MAX_SERIAL_PORTS 2018-04-26 13:57:00 +01:00
ssi xilinx_spips: Correct SNOOP_NONE state when flushing the txfifo 2018-04-26 11:04:40 +01:00
timer hw/timer/mt48t59: Fix bit-rotten NVRAM_PRINTF format strings 2018-05-20 08:50:16 +03:00
tpm tpm: CRB: Enforce locality is requested before processing buffer 2018-03-29 17:41:02 -04:00
tricore hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-03-12 16:12:46 +01:00
unicore32 hw/input/i8042: Extract declarations from i386/pc.h into input/i8042.h 2018-03-12 16:12:48 +01:00
usb hw/usb/dev-smartcard-reader: Handle 64 B USB packets 2018-05-18 09:42:16 +02:00
vfio vfio-ccw: introduce vfio_ccw_get_device() 2018-04-30 10:31:41 +02:00
virtio vhost: do not verify ring mappings when IOMMU is enabled 2018-04-16 19:11:38 +03:00
watchdog qapi: Empty out qapi-schema.json 2018-03-02 13:45:50 -06:00
xen xen: Expect xenstore write to fail when restricted 2018-04-26 16:29:51 +01:00
xenpv hw/xen*: Replace fprintf(stderr, "*\n" with error_report() 2018-02-06 18:29:46 +01:00
xtensa Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
Makefile.objs hw/rdma: Add wrappers and macros 2018-02-19 13:03:24 +02:00