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kern: make GetTargetFirmware a compile-time constant when not building for Switch

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fincs 2020-08-10 21:42:19 +02:00 • committed by SciresM
parent 3c85e37667
commit b917ea283e
4 changed files with 32 additions and 3 deletions
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20
mesosphere/kernel_ldr/source/kern_init_loader.cpp
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@ -87,6 +87,22 @@ namespace ams::kern::init::loader {
cpu::InvalidateEntireTlb();
}
#ifdef ATMOSPHERE_BOARD_NINTENDO_NX
ALWAYS_INLINE bool ShouldPerformCpuSpecificSetup() {
/* Perform cpu-specific setup only on < 10.0.0. */
return kern::GetTargetFirmware() < ams::TargetFirmware_10_0_0;
}
#else
consteval ALWAYS_INLINE bool ShouldPerformCpuSpecificSetup() {
/* Always perform cpu-specific setup. */
return true;
}
#endif
void SetupInitialIdentityMapping(KInitialPageTable &ttbr1_table, uintptr_t base_address, uintptr_t kernel_size, uintptr_t page_table_region, size_t page_table_region_size, KInitialPageTable::IPageAllocator &allocator) {
/* Make a new page table for TTBR0_EL1. */
KInitialPageTable ttbr0_table(allocator.Allocate());
@ -116,8 +132,8 @@ namespace ams::kern::init::loader {
cpu::MemoryAccessIndirectionRegisterAccessor(MairValue).Store();
cpu::TranslationControlRegisterAccessor(TcrValue).Store();
/* Perform cpu-specific setup on < 10.0.0. */
if (kern::GetTargetFirmware() < ams::TargetFirmware_10_0_0) {
/* Perform cpu-specific setup if needed. */
if (ShouldPerformCpuSpecificSetup()) {
SavedRegisterState saved_registers;
SaveRegistersToTpidrEl1(&saved_registers);
ON_SCOPE_EXIT { VerifyAndClearTpidrEl1(&saved_registers); };