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kern: update initial cache management to match latest kernel

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This commit is contained in:
Michael Scire 2021-07-12 18:30:01 -07:00
parent 12bf9612cb
commit 14d458522d
4 changed files with 67 additions and 71 deletions
mesosphere/kernel_ldr/source
kern_init_loader.cpp

22
mesosphere/kernel_ldr/source/kern_init_loader.cpp
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@ -59,26 +59,6 @@ namespace ams::kern::init::loader {
}
}
void EnsureEntireDataCacheFlushed() {
/* Flush shared cache. */
cpu::FlushEntireDataCacheSharedForInit();
cpu::DataSynchronizationBarrier();
/* Flush local cache. */
cpu::FlushEntireDataCacheLocalForInit();
cpu::DataSynchronizationBarrier();
/* Flush shared cache. */
cpu::FlushEntireDataCacheSharedForInit();
cpu::DataSynchronizationBarrier();
/* Invalidate entire instruction cache. */
cpu::InvalidateEntireInstructionCacheForInit();
/* Invalidate entire TLB. */
cpu::InvalidateEntireTlb();
}
void SetupInitialIdentityMapping(KInitialPageTable &init_pt, uintptr_t base_address, uintptr_t kernel_size, uintptr_t page_table_region, size_t page_table_region_size, KInitialPageTable::IPageAllocator &allocator) {
/* Map in an RWX identity mapping for the kernel. */
constexpr PageTableEntry KernelRWXIdentityAttribute(PageTableEntry::Permission_KernelRWX, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable, PageTableEntry::MappingFlag_Mapped);
@ -109,7 +89,7 @@ namespace ams::kern::init::loader {
PerformBoardSpecificSetup();
/* Ensure that the entire cache is flushed. */
EnsureEntireDataCacheFlushed();
cpu::FlushEntireCacheForInit();
/* Setup SCTLR_EL1. */
/* TODO: Define these bits properly elsewhere, document exactly what each bit set is doing .*/