mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 15:32:46 +00:00
15b818cd57
The MemoryManager now works, so we can use the same code as on x86 to map the framebuffer. Since it uses the MemoryManager, the initialization of the BootFramebufferConsole has to happen after the MemoryManager is working.
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Graphics/Console/BootFramebufferConsole.h>
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#include <Kernel/Locking/Spinlock.h>
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#include <Kernel/Memory/MemoryManager.h>
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namespace Kernel::Graphics {
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BootFramebufferConsole::BootFramebufferConsole(PhysicalAddress framebuffer_addr, size_t width, size_t height, size_t pitch)
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: GenericFramebufferConsoleImpl(width, height, pitch)
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{
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// NOTE: We're very early in the boot process, memory allocations shouldn't really fail
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auto framebuffer_end = Memory::page_round_up(framebuffer_addr.offset(height * pitch * sizeof(u32)).get()).release_value();
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m_framebuffer = MM.allocate_kernel_region(framebuffer_addr.page_base(), framebuffer_end - framebuffer_addr.page_base().get(), "Boot Framebuffer"sv, Memory::Region::Access::ReadWrite).release_value();
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[[maybe_unused]] auto result = m_framebuffer->set_write_combine(true);
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m_framebuffer_data = m_framebuffer->vaddr().offset(framebuffer_addr.offset_in_page()).as_ptr();
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memset(m_framebuffer_data, 0, height * pitch * sizeof(u32));
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}
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void BootFramebufferConsole::clear(size_t x, size_t y, size_t length)
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{
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SpinlockLocker lock(m_lock);
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if (m_framebuffer_data)
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GenericFramebufferConsoleImpl::clear(x, y, length);
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}
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void BootFramebufferConsole::clear_glyph(size_t x, size_t y)
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{
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VERIFY(m_lock.is_locked());
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GenericFramebufferConsoleImpl::clear_glyph(x, y);
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}
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void BootFramebufferConsole::enable()
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{
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// Once disabled, ignore requests to re-enable
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}
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void BootFramebufferConsole::disable()
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{
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SpinlockLocker lock(m_lock);
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GenericFramebufferConsoleImpl::disable();
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m_framebuffer = nullptr;
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m_framebuffer_data = nullptr;
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}
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void BootFramebufferConsole::write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical)
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{
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SpinlockLocker lock(m_lock);
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if (m_framebuffer_data)
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GenericFramebufferConsoleImpl::write(x, y, ch, background, foreground, critical);
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}
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void BootFramebufferConsole::set_cursor(size_t x, size_t y)
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{
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// Note: To ensure we don't trigger a deadlock, let's assert in
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// case we already locked the spinlock, so we know there's a bug
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// in the call path.
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VERIFY(!m_lock.is_locked());
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SpinlockLocker lock(m_lock);
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hide_cursor();
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m_x = x;
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m_y = y;
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show_cursor();
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}
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void BootFramebufferConsole::hide_cursor()
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{
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VERIFY(m_lock.is_locked());
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GenericFramebufferConsoleImpl::hide_cursor();
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}
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void BootFramebufferConsole::show_cursor()
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{
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VERIFY(m_lock.is_locked());
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GenericFramebufferConsoleImpl::show_cursor();
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}
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u8* BootFramebufferConsole::framebuffer_data()
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{
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VERIFY(m_lock.is_locked());
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VERIFY(m_framebuffer_data);
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return m_framebuffer_data;
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}
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}
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