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c515e1341a
Instead of storing the current Processor into a core local register, we currently just store it into a global, since we don't support SMP for aarch64 anyway. This simplifies the initial implementation.
36 lines
880 B
C++
36 lines
880 B
C++
/*
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* Copyright (c) 2022, Timon Kruiper <timonkruiper@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Format.h>
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#include <Kernel/Arch/Processor.h>
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#include <Kernel/Arch/aarch64/ASM_wrapper.h>
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#include <Kernel/Arch/aarch64/Prekernel/Aarch64_asm_utils.h>
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#include <Kernel/Arch/aarch64/Prekernel/Prekernel.h>
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extern "C" uintptr_t vector_table_el1;
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namespace Kernel {
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Processor* g_current_processor;
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void Processor::initialize(u32 cpu)
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{
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VERIFY(g_current_processor == nullptr);
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auto current_exception_level = static_cast<u64>(Kernel::Aarch64::Asm::get_current_exception_level());
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dbgln("CPU{} started in: EL{}", cpu, current_exception_level);
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dbgln("Drop CPU{} to EL1", cpu);
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Prekernel::drop_to_exception_level_1();
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// Load EL1 vector table
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el1_vector_table_install(&vector_table_el1);
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g_current_processor = this;
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}
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}
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