mirror of
https://github.com/taigrr/gopher-os
synced 2025-01-18 04:43:13 -08:00
e67e2644e2
Summary of changes: - kernel/mem renamed to kernel/mm - consolidated page/frame defs into one file which now lives in the kernel/mm package and is referenced by both pmm and vmm pkgs - consolidated parts of the vmm code (e.g. PDT+PTE) - memcopy/memset helpers moved to the kernel package - physical allocators moved to the kernel/mm/pmm package - break vmm -> pmm pkg dependency by moving AllocFrame() into the mm package.
40 lines
1007 B
Go
40 lines
1007 B
Go
package pmm
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import (
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"gopheros/kernel"
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"gopheros/kernel/mm"
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)
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var (
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// bootMemAllocator is the page allocator used when the kernel boots.
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// It is used to bootstrap the bitmap allocator which is used for all
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// page allocations while the kernel runs.
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bootMemAllocator BootMemAllocator
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// bitmapAllocator is the standard allocator used by the kernel.
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bitmapAllocator BitmapAllocator
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)
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// Init sets up the kernel physical memory allocation sub-system.
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func Init(kernelStart, kernelEnd uintptr) *kernel.Error {
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bootMemAllocator.init(kernelStart, kernelEnd)
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bootMemAllocator.printMemoryMap()
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mm.SetFrameAllocator(earlyAllocFrame)
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// Using the bootMemAllocator bootstrap the bitmap allocator
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if err := bitmapAllocator.init(); err != nil {
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return err
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}
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mm.SetFrameAllocator(bitmapAllocFrame)
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return nil
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}
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func earlyAllocFrame() (mm.Frame, *kernel.Error) {
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return bootMemAllocator.AllocFrame()
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}
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func bitmapAllocFrame() (mm.Frame, *kernel.Error) {
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return bitmapAllocator.AllocFrame()
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}
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