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ARM: fix bootloader's mmu_map_physical_memory size

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When the address is not page aligned, not only adjust the address
to start mapping, but also take the "overflow" on the last page
into account.

This makes the bootloader boot again ;)
This commit is contained in:
Ithamar R. Adema
2014-10-25 09:43:15 -07:00
parent fdec4227f5
commit 2ce0d69a7e
1 changed files with 3 additions and 0 deletions
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src/system/boot/arch/arm/arch_mmu.cpp
+3
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@@ -383,10 +383,13 @@ map_page(addr_t virtualAddress, addr_t physicalAddress, uint32 flags)
extern "C" addr_t
mmu_map_physical_memory(addr_t physicalAddress, size_t size, uint32 flags)
{
TRACE(("mmu_map_physical_memory(phAddr=%lx, %lx, %lu)\n", physicalAddress, size, flags));
addr_t address = sNextVirtualAddress;
addr_t pageOffset = physicalAddress & (B_PAGE_SIZE - 1);
physicalAddress -= pageOffset;
if (pageOffset)
size += B_PAGE_SIZE;
for (addr_t offset = 0; offset < size; offset += B_PAGE_SIZE) {
map_page(get_next_virtual_page(B_PAGE_SIZE), physicalAddress + offset,