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[boot][kernel] Replace frame allocator with bitmap-based one

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The previous frame allocator involved a lot of splitting and merging
linked lists and lost all information about frames while they were
allocated. The new allocator is based on an array of descriptor
structures and a bitmap. Each memory map region of allocatable memory
becomes one or more descriptors, each mapping up to 1GiB of physical
memory. The descriptors implement two levels of a bitmap tree, and have
a pointer into the large contiguous bitmap to track individual pages.
This commit is contained in:
Justin C. Miller
2021-01-22 00:16:01 -08:00
parent fd8552ca3a
commit aae18fd035
14 changed files with 419 additions and 212 deletions
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src/boot/console.cpp
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@@ -55,7 +55,7 @@ console::console(uefi::boot_services *bs, uefi::protos::simple_text_output *out)
m_out->output_string(GIT_VERSION_WIDE);
m_out->set_attribute(uefi::attribute::light_gray);
m_out->output_string(L" booting...\r\n\n");
m_out->output_string(L" booting...\r\n");
if (m_fb.type != kernel::args::fb_type::none) {
wchar_t const * type = nullptr;