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ArmPkg/CpuDxe: Fixed calculation of the Page Table Index (Level 2 Descriptor) 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14617 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2013-09-02 13:12:17 +00:00 committed by oliviermartin
parent c6ba1c1285
commit b75d7605b4
1 changed files with 2 additions and 2 deletions
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4
ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c
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@ -768,7 +768,7 @@ GetMemoryRegionPage (
PageAttributes = ConvertSectionAttributesToPageAttributes (*RegionAttributes, 0); PageAttributes = ConvertSectionAttributesToPageAttributes (*RegionAttributes, 0);
// Calculate index into first level translation table for start of modification // Calculate index into first level translation table for start of modification
TableIndex = TT_DESCRIPTOR_PAGE_BASE_ADDRESS(*BaseAddress) >> TT_DESCRIPTOR_PAGE_BASE_SHIFT; TableIndex = ((*BaseAddress) & TT_DESCRIPTOR_PAGE_INDEX_MASK) >> TT_DESCRIPTOR_PAGE_BASE_SHIFT;
ASSERT (TableIndex < TRANSLATION_TABLE_PAGE_COUNT); ASSERT (TableIndex < TRANSLATION_TABLE_PAGE_COUNT);
// Go through the page table to find the end of the section // Go through the page table to find the end of the section
@ -838,7 +838,7 @@ GetMemoryRegion (
PageTable = (UINT32*)(SectionDescriptor & TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK); PageTable = (UINT32*)(SectionDescriptor & TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK);
// Calculate index into first level translation table for start of modification // Calculate index into first level translation table for start of modification
PageTableIndex = TT_DESCRIPTOR_PAGE_BASE_ADDRESS (*BaseAddress) >> TT_DESCRIPTOR_PAGE_BASE_SHIFT; PageTableIndex = ((*BaseAddress) & TT_DESCRIPTOR_PAGE_INDEX_MASK) >> TT_DESCRIPTOR_PAGE_BASE_SHIFT;
ASSERT (PageTableIndex < TRANSLATION_TABLE_PAGE_COUNT); ASSERT (PageTableIndex < TRANSLATION_TABLE_PAGE_COUNT);
PageAttributes = PageTable[PageTableIndex] & TT_DESCRIPTOR_PAGE_ATTRIBUTE_MASK; PageAttributes = PageTable[PageTableIndex] & TT_DESCRIPTOR_PAGE_ATTRIBUTE_MASK;