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https://github.com/taigrr/gopher-os
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31 lines
1.0 KiB
Go
31 lines
1.0 KiB
Go
package kmain
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import (
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"github.com/achilleasa/gopher-os/kernel/hal"
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"github.com/achilleasa/gopher-os/kernel/hal/multiboot"
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"github.com/achilleasa/gopher-os/kernel/kfmt/early"
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"github.com/achilleasa/gopher-os/kernel/mem/pmm/allocator"
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)
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// Kmain is the only Go symbol that is visible (exported) from the rt0 initialization
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// code. This function is invoked by the rt0 assembly code after setting up the GDT
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// and setting up a a minimal g0 struct that allows Go code using the 4K stack
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// allocated by the assembly code.
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//
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// The rt0 code passes the address of the multiboot info payload provided by the
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// bootloader as well as the physical addresses for the kernel start/end.
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//
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// Kmain is not expected to return. If it does, the rt0 code will halt the CPU.
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//
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//go:noinline
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func Kmain(multibootInfoPtr, kernelStart, kernelEnd uintptr) {
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multiboot.SetInfoPtr(multibootInfoPtr)
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hal.InitTerminal()
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hal.ActiveTerminal.Clear()
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if err := allocator.Init(); err != nil {
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early.Printf("[%s] error: %s\n", err.Module, err.Message)
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}
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}
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