83 lines
1.6 KiB
ArmAsm
83 lines
1.6 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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* \author Stefan Kalkowski
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* \date 2015-04-22
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*/
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/*
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* Copyright (C) 2015-2017 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 Affero General Public License version 3.
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*/
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.set MIN_PAGE_SIZE_LOG2, 12
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.data
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/********************************************
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** Identity mapping from 4KiB to 1GiB **
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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 2MiB - 4KiB 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_0 + 0xf
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.fill 1, 8, 0x0
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.quad _kernel_pd_2 + 0xf
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.quad _kernel_pd_3 + 0xf
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.fill 508, 8, 0x0
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/* PD [0G-1G) */
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pd_0:
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.quad _kernel_pt_bda + 0xf
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.set entry, 0x20018f
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.rept 511
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.quad entry
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.set entry, entry + 0x200000
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.endr
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/* PD [2G-3G) */
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pd_2:
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.set entry, 0x8000018f
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.rept 512
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.quad entry
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.set entry, entry + 0x200000
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.endr
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/* PD [3G-4G) */
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.p2align MIN_PAGE_SIZE_LOG2
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_kernel_pd_3:
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.set entry, 0xc000018f
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.rept 502
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.quad entry
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.set entry, entry + 0x200000
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.endr
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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 1, 8, 0x0
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.set entry, 0x118f
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.rept 510
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.quad entry
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.set entry, entry + 0x1000
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.endr
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.quad 0x000001
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