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kern: implement interrupt thread init

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This commit is contained in:
Michael Scire 2020-02-14 02:20:33 -08:00
parent 19e6d2e1c0
commit c91386b0fa
7 changed files with 322 additions and 33 deletions
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44
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
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@ -22,16 +22,20 @@ namespace ams::kern::arm64::cpu {
#if defined(ATMOSPHERE_CPU_ARM_CORTEX_A57) || defined(ATMOSPHERE_CPU_ARM_CORTEX_A53)
constexpr inline size_t InstructionCacheLineSize = 0x40;
constexpr inline size_t DataCacheLineSize = 0x40;
constexpr inline size_t NumPerformanceCounters = 6;
#else
#error "Unknown CPU for cache line sizes"
#endif
#if defined(ATMOSPHERE_BOARD_NINTENDO_SWITCH)
static constexpr size_t NumCores = 4;
constexpr inline size_t NumCores = 4;
#else
#error "Unknown Board for cpu::NumCores"
#endif
/* Initialization. */
NOINLINE void InitializeInterruptThreads(s32 core_id);
/* Helpers for managing memory state. */
ALWAYS_INLINE void DataSynchronizationBarrier() {
__asm__ __volatile__("dsb sy" ::: "memory");
@ -65,6 +69,40 @@ namespace ams::kern::arm64::cpu {
InstructionMemoryBarrier();
}
/* Performance counter helpers. */
ALWAYS_INLINE u64 GetCycleCounter() {
return cpu::GetPmcCntrEl0();
}
ALWAYS_INLINE u32 GetPerformanceCounter(s32 n) {
u64 counter = 0;
if (n < static_cast<s32>(NumPerformanceCounters)) {
switch (n) {
case 0:
counter = cpu::GetPmevCntr0El0();
break;
case 1:
counter = cpu::GetPmevCntr1El0();
break;
case 2:
counter = cpu::GetPmevCntr2El0();
break;
case 3:
counter = cpu::GetPmevCntr3El0();
break;
case 4:
counter = cpu::GetPmevCntr4El0();
break;
case 5:
counter = cpu::GetPmevCntr5El0();
break;
default:
break;
}
}
return static_cast<u32>(counter);
}
/* Helper for address access. */
ALWAYS_INLINE bool GetPhysicalAddressWritable(KPhysicalAddress *out, KVirtualAddress addr, bool privileged = false) {
const uintptr_t va = GetInteger(addr);
@ -115,8 +153,8 @@ namespace ams::kern::arm64::cpu {
/* Cache management helpers. */
void ClearPageToZeroImpl(void *);
void FlushEntireDataCacheShared();
void FlushEntireDataCacheLocal();
void FlushEntireDataCacheSharedForInit();
void FlushEntireDataCacheLocalForInit();
ALWAYS_INLINE void ClearPageToZero(void *page) {
MESOSPHERE_ASSERT(util::IsAligned(reinterpret_cast<uintptr_t>(page), PageSize));