65 lines
1.3 KiB
ArmAsm
65 lines
1.3 KiB
ArmAsm
/*
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* \brief Initial pagetables for x86_64
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* \author Adrian-Ken Rueegsegger
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* \author Reto Buerki
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* \date 2015-04-22
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*/
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/*
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* Copyright (C) 2015 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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.include "macros.s"
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.data
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/********************************************
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** Identity mapping from 2MiB to 16MiB **
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** plus mappings for LAPIC, I/O APIC MMIO **
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** Page 0 containing the Bios Data Area **
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** gets mapped to 2MB - 4K readonly. **
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********************************************/
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/* PML4 */
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.p2align MIN_PAGE_SIZE_LOG2
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.global _kernel_pml4
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_kernel_pml4:
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.quad _kernel_pdp + 0xf
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.fill 511, 8, 0x0
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/* PDP */
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pdp:
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.quad _kernel_pd + 0xf
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.fill 2, 8, 0x0
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.quad _kernel_pd_503 + 0xf
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.fill 508, 8, 0x0
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/* PD */
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pd:
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.quad _kernel_pt_bda + 0xf
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.quad 0x20018f
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.quad 0x40018f
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.quad 0x60018f
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.quad 0x80018f
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.quad 0xa0018f
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.quad 0xc0018f
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.quad 0xe0018f
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.fill 504, 8, 0x0
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pd_503:
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.fill 502, 8, 0x0
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.quad 0xfec0019f
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.quad 0xfee0019f
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.fill 8, 8, 0x0
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pt_bda:
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.fill 511, 8, 0x0
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.quad 0x000001
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