RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 02:07:34 +00:00
Code Issues Activity Actions

Kernel/Graphics + SystemServer: Support text mode properly

Browse source 
As we removed the support of VBE modesetting that was done by GRUB early
on boot, we need to determine if we can modeset the resolution with our
drivers, and if not, we should enable text mode and ensure that
SystemServer knows about it too.

Also, SystemServer should first check if there's a framebuffer device
node, which is an indication that text mode was not even if it was
requested. Then, if it doesn't find it, it should check what boot_mode
argument the user specified (in case it's self-test). This way if we
try to use bochs-display device (which is not VGA compatible) and
request a text mode, it will not honor the request and will continue
with graphical mode.

Also try to print critical messages with mininum memory allocations
possible.

In LibVT, We make the implementation flexible for kernel-specific
methods that are implemented in ConsoleImpl class.
This commit is contained in:
Liav A 2021-04-16 22:58:51 +03:00 • committed by Andreas Kling
parent dac129e10b
commit 20743e8aed
41 changed files with 1832 additions and 321 deletions
Download patch file Download diff file Expand all files Collapse all files

18
Kernel/Graphics/IntelNativeGraphicsAdapter.h
View file

@ -9,8 +9,8 @@
#include <AK/String.h>
#include <AK/Types.h>
#include <Kernel/Graphics/Definitions.h>
#include <Kernel/Graphics/GraphicsDevice.h>
#include <Kernel/Graphics/RawFramebufferDevice.h>
#include <Kernel/Graphics/VGACompatibleAdapter.h>
#include <Kernel/PCI/DeviceController.h>
#include <Kernel/PhysicalAddress.h>
@ -47,8 +47,7 @@ enum RegisterIndex {
}
class IntelNativeGraphicsAdapter final
: public GraphicsDevice
, public PCI::DeviceController {
: public VGACompatibleAdapter {
AK_MAKE_ETERNAL
public:
struct PLLSettings {
@ -129,6 +128,7 @@ private:
void enable_output(PhysicalAddress fb_address, size_t width);
void disable_vga_emulation();
void enable_vga_plane();
void disable_dac_output();
void enable_dac_output();
@ -138,7 +138,9 @@ private:
void disable_pipe_b();
void disable_dpll();
void set_dpll_registers(const PLLSettings&, size_t dac_multiplier);
void set_dpll_registers(const PLLSettings&);
void enable_dpll_without_vga(const PLLSettings&, size_t dac_multiplier);
void set_display_timings(const Graphics::Modesetting&);
void enable_pipe_a();
void set_framebuffer_parameters(size_t, size_t);
@ -166,15 +168,7 @@ private:
Graphics::VideoInfoBlock m_crt_edid;
const PhysicalAddress m_registers;
const PhysicalAddress m_framebuffer_addr;
OwnPtr<Region> m_registers_region;
size_t m_framebuffer_width { 0 };
size_t m_framebuffer_height { 0 };
size_t m_framebuffer_stride { 0 };
protected:
RefPtr<RawFramebufferDevice> m_framebuffer;
};
}