jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
8#include <Kernel/TTY/ConsoleManagement.h>
9
10namespace Kernel::Graphics {
11
12NonnullLockRefPtr<ContiguousFramebufferConsole> ContiguousFramebufferConsole::initialize(PhysicalAddress framebuffer_address, size_t width, size_t height, size_t pitch)
13{
14 return adopt_lock_ref(*new ContiguousFramebufferConsole(framebuffer_address, width, height, pitch));
15}
16
17ContiguousFramebufferConsole::ContiguousFramebufferConsole(PhysicalAddress framebuffer_address, size_t width, size_t height, size_t pitch)
18 : GenericFramebufferConsole(width, height, pitch)
19 , m_framebuffer_address(framebuffer_address)
20{
21 set_resolution(width, height, pitch);
22}
23
24void ContiguousFramebufferConsole::set_resolution(size_t width, size_t height, size_t pitch)
25{
26 m_width = width;
27 m_height = height;
28 m_pitch = pitch;
29
30 size_t size = Memory::page_round_up(pitch * height).release_value_but_fixme_should_propagate_errors();
31 dbgln("Framebuffer Console: taking {} bytes", size);
32 auto region_or_error = MM.allocate_kernel_region(m_framebuffer_address, size, "Framebuffer Console"sv, Memory::Region::Access::ReadWrite, Memory::Region::Cacheable::Yes);
33 VERIFY(!region_or_error.is_error());
34 m_framebuffer_region = region_or_error.release_value();
35
36 // Just to start cleanly, we clean the entire framebuffer
37 memset(m_framebuffer_region->vaddr().as_ptr(), 0, pitch * height);
38
39 ConsoleManagement::the().resolution_was_changed();
40}
41
42}