Supports qemu emulated ati cards. They have been added in qemu 4.0.
Acceleration support (in qemu) is pretty rough still. A simple
framebuffer works fine though.
Available models:
* ati rage 128 pro
* ati rv100
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add support for qemu ramfb. This is a simple boot framebuffer device,
with normal ram being used to back the framebuffer and fw_cfg being used
to configure the device.
Use case (on x86): boot display for vgpu devices (which neither emulate
vga nor have a vgabios).
Sharing fw_cfg code with seabios turned out to be difficuilt due to
various dependencies the code has on infrastructure which only seabios
has. So include a copy of the code here, with those dependencies
removed and also stripped down because we don't need a non-dma fallback
here.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Use coreboot text mode emulation to also support the qemu bochs-display
device. This is a new display device supporting simple linear
framebuffers, using the bochs register interface. No support for legacy
vga (text modes, planar modes, cga modes, 8bpp palette modes all
dropped). The bochs interface is compatible with the qemu stdvga.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add a kconfig menu to pick the vga variant, stick the vendorr
and device ids as defaults into Kconfig.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add a kconfig build option (CONFIG_VGA_FIXUP_ASM) to allow users to
build the vgabios without the complex assembler fixups that work
around emulator bugs.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add support for simple text mode attribute emulation while in graphics
mode. This improves text highlighting and background color on some
boot-loaders. Enable it only for CBVGA vgabios and only when a text
mode is requested.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add option CONFIG_VGA_STDVGA_PORTS. When this option is disabled, the
main BIOS code will not attempt to access any of the legacy VGA IO
ports.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add code to allocate an extra stack for the main vgabios int 0x10
entry point. The allocation is done via the PMM spec and uses a PCI
v3 permanent low memory region request. This request will work with
SeaBIOS - it is unknown how many other main BIOS implementations
support this PMM call.
The extra stack is useful for old DOS programs that call the VGABIOS
and expect it to work with very small amounts of stack space.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Geode GX2 and LX are supporting Flat Panels. Add new
configuration options to support different output modes.
You can choose between:
* CRT
* Flat Panel
* CRT and Flat Panel
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
If coreboot building is selected, don't allow the emulator based vga
roms to be selected. Also, clarify the help text to make this clear.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Gerd Hoffmann