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kern: remove unnecessary fields from InitArgs (0x80 -> 0x40)

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This commit is contained in:
Michael Scire 2023-10-11 03:10:08 -07:00
parent 3c33647f6d
commit 9e99f36d7c
4 changed files with 22 additions and 61 deletions
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36
libraries/libmesosphere/source/board/nintendo/nx/kern_k_sleep_manager.cpp
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@ -32,7 +32,6 @@ namespace ams::kern::board::nintendo::nx {
class SavedSystemRegisters {
private:
u64 ttbr0_el1;
u64 tcr_el1;
u64 elr_el1;
u64 sp_el0;
u64 spsr_el1;
@ -92,7 +91,6 @@ namespace ams::kern::board::nintendo::nx {
void SavedSystemRegisters::Save() {
/* Save system registers. */
this->ttbr0_el1 = cpu::GetTtbr0El1();
this->tcr_el1 = cpu::GetTcrEl1();
this->tpidr_el0 = cpu::GetTpidrEl0();
this->elr_el1 = cpu::GetElrEl1();
this->sp_el0 = cpu::GetSpEl0();
@ -408,7 +406,6 @@ namespace ams::kern::board::nintendo::nx {
/* Restore system registers. */
cpu::SetTtbr0El1 (this->ttbr0_el1);
cpu::SetTcrEl1 (this->tcr_el1);
cpu::SetTpidrEl0 (this->tpidr_el0);
cpu::SetElrEl1 (this->elr_el1);
cpu::SetSpEl0 (this->sp_el0);
@ -515,24 +512,6 @@ namespace ams::kern::board::nintendo::nx {
/* Save the system registers for the current core. */
g_sleep_system_registers[core_id].Save();
/* Change the translation tables to use the kernel table. */
{
/* Get the current value of the translation control register. */
const u64 tcr = cpu::GetTcrEl1();
/* Disable translation table walks on tlb miss. */
cpu::TranslationControlRegisterAccessor(tcr).SetEpd0(true).Store();
cpu::EnsureInstructionConsistency();
/* Change the translation table base (ttbr0) to use the kernel table. */
cpu::SetTtbr0El1(Kernel::GetKernelPageTable().GetIdentityMapTtbr0(core_id));
cpu::EnsureInstructionConsistency();
/* Enable translation table walks on tlb miss. */
cpu::TranslationControlRegisterAccessor(tcr).SetEpd0(false).Store();
cpu::EnsureInstructionConsistency();
}
/* Invalidate the entire tlb. */
cpu::InvalidateEntireTlb();
@ -552,13 +531,14 @@ namespace ams::kern::board::nintendo::nx {
/* Setup the initial arguments. */
{
init_args->ttbr0 = cpu::GetTtbr0El1();
init_args->ttbr1 = cpu::GetTtbr1El1();
init_args->tcr = cpu::GetTcrEl1();
init_args->mair = cpu::GetMairEl1();
init_args->cpuactlr = cpu::GetCpuActlrEl1();
init_args->cpuectlr = cpu::GetCpuEctlrEl1();
init_args->sctlr = cpu::GetSctlrEl1();
/* Determine whether we're running on a cortex-a53 or a-57. */
cpu::MainIdRegisterAccessor midr_el1;
const auto implementer = midr_el1.GetImplementer();
const auto primary_part = midr_el1.GetPrimaryPartNumber();
const bool needs_cpu_ctlr = (implementer == cpu::MainIdRegisterAccessor::Implementer::ArmLimited) && (primary_part == cpu::MainIdRegisterAccessor::PrimaryPartNumber::CortexA57 || primary_part == cpu::MainIdRegisterAccessor::PrimaryPartNumber::CortexA53);
init_args->cpuactlr = needs_cpu_ctlr ? cpu::GetCpuActlrEl1() : 0;
init_args->cpuectlr = needs_cpu_ctlr ? cpu::GetCpuEctlrEl1() : 0;
init_args->sp = 0;
init_args->entrypoint = reinterpret_cast<uintptr_t>(::ams::kern::board::nintendo::nx::KSleepManager::ResumeEntry);
init_args->argument = sleep_buffer;