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hw_x86_64: Extend inital page tables up to 1 GiB

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To avoid future issues with regards to non-existent mappings in the
initial pagetables, extend them to cover the memory range of 2 MiB up to
1 GiB.
This commit is contained in:
Adrian-Ken Rueegsegger 2015-07-08 00:42:08 +02:00 committed by Norman Feske
parent ce43ed4c17
commit 2fe0860ba7
1 changed files with 6 additions and 9 deletions
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15
repos/base-hw/src/core/spec/x86_64/kernel/crt0_translation_table.s
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@ -17,7 +17,7 @@
.data .data
/******************************************** /********************************************
** Identity mapping from 2MiB to 16MiB ** ** Identity mapping from 2MiB to 1GiB **
** plus mappings for LAPIC, I/O APIC MMIO ** ** plus mappings for LAPIC, I/O APIC MMIO **
** Page 0 containing the Bios Data Area ** ** Page 0 containing the Bios Data Area **
** gets mapped to 2MB - 4K readonly. ** ** gets mapped to 2MB - 4K readonly. **
@ -42,14 +42,11 @@
.p2align MIN_PAGE_SIZE_LOG2 .p2align MIN_PAGE_SIZE_LOG2
_kernel_pd: _kernel_pd:
.quad _kernel_pt_bda + 0xf .quad _kernel_pt_bda + 0xf
.quad 0x20018f .set entry, 0x20018f
.quad 0x40018f .rept 511
.quad 0x60018f .quad entry
.quad 0x80018f .set entry, entry + 0x200000
.quad 0xa0018f .endr
.quad 0xc0018f
.quad 0xe0018f
.fill 504, 8, 0x0
.p2align MIN_PAGE_SIZE_LOG2 .p2align MIN_PAGE_SIZE_LOG2
_kernel_pd_503: _kernel_pd_503: