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kern: audit (and fix) our hardware maintenance instructions to match official kernel

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This commit is contained in:
Michael Scire 2021-10-27 12:31:53 -07:00
parent fb59d0ad43
commit e81a1ce5a8
16 changed files with 104 additions and 203 deletions
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3
libraries/libmesosphere/source/board/nintendo/nx/kern_k_device_page_table.cpp
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@ -656,9 +656,8 @@ namespace ams::kern::board::nintendo::nx {
MESOSPHERE_ASSERT(IsValidPhysicalAddress(table_phys_addr));
Kernel::GetSystemPageTableManager().Open(table_virt_addr, 1);
/* Clear the page and save it. */
/* Save the page. Note that it is a pre-condition that the page is cleared, when allocated from the system page table manager. */
/* NOTE: Nintendo does not check the result of StoreDataCache. */
cpu::ClearPageToZero(GetVoidPointer(table_virt_addr));
cpu::StoreDataCache(GetVoidPointer(table_virt_addr), PageDirectorySize);
g_reserved_table_phys_addr = table_phys_addr;

4
libraries/libmesosphere/source/board/nintendo/nx/kern_k_sleep_manager.cpp
View file

@ -341,7 +341,9 @@ namespace ams::kern::board::nintendo::nx {
/* Restore pmu registers. */
cpu::SetPmUserEnrEl0(0);
cpu::PerformanceMonitorsControlRegisterAccessor().SetEventCounterReset(true).SetCycleCounterReset(true).Store();
cpu::PerformanceMonitorsControlRegisterAccessor(0).SetEventCounterReset(true).SetCycleCounterReset(true).Store();
cpu::EnsureInstructionConsistency();
cpu::SetPmOvsClrEl0(static_cast<u64>(static_cast<u32>(~u32())));
cpu::SetPmIntEnClrEl1(static_cast<u64>(static_cast<u32>(~u32())));
cpu::SetPmCntEnClrEl0(static_cast<u64>(static_cast<u32>(~u32())));