mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-23 20:32:10 +00:00
206 lines
No EOL
8.7 KiB
C++
206 lines
No EOL
8.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <exosphere.hpp>
|
|
#include "secmon_setup.hpp"
|
|
|
|
namespace ams::secmon {
|
|
|
|
namespace setup {
|
|
|
|
#include "secmon_cache_impl.inc"
|
|
|
|
}
|
|
|
|
namespace {
|
|
|
|
using namespace ams::mmu;
|
|
|
|
void SetupCpuCommonControllers() {
|
|
/* Set cpuactlr_el1. */
|
|
{
|
|
util::BitPack64 cpuactlr = {};
|
|
cpuactlr.Set<hw::CpuactlrEl1CortexA57::NonCacheableStreamingEnhancement>(1);
|
|
cpuactlr.Set<hw::CpuactlrEl1CortexA57::DisableLoadPassDmb>(1);
|
|
HW_CPU_SET_CPUACTLR_EL1(cpuactlr);
|
|
}
|
|
|
|
/* Set cpuectlr_el1. */
|
|
{
|
|
util::BitPack64 cpuectlr = {};
|
|
cpuectlr.Set<hw::CpuectlrEl1CortexA57::Smpen>(1);
|
|
cpuectlr.Set<hw::CpuectlrEl1CortexA57::L2LoadStoreDataPrefetchDistance>(3);
|
|
cpuectlr.Set<hw::CpuectlrEl1CortexA57::L2InstructionFetchPrefetchDistance>(3);
|
|
HW_CPU_SET_CPUECTLR_EL1(cpuectlr);
|
|
}
|
|
|
|
/* Prevent instruction reordering. */
|
|
hw::InstructionSynchronizationBarrier();
|
|
}
|
|
|
|
void SetupCpuEl3Controllers() {
|
|
/* Set scr_el3. */
|
|
{
|
|
util::BitPack32 scr = {};
|
|
scr.Set<hw::ScrEl3::Ns >(1); /* Set EL0/EL1 as Non-Secure. */
|
|
scr.Set<hw::ScrEl3::Irq >(0); /* IRQs are taken in IRQ mode. */
|
|
scr.Set<hw::ScrEl3::Fiq >(1); /* FIQs are taken in Monitor mode. */
|
|
scr.Set<hw::ScrEl3::Ea >(1); /* External aborts are taken in Monitor mode. */
|
|
scr.Set<hw::ScrEl3::Fw >(1); /* CPSR.F is non-secure writable. */
|
|
scr.Set<hw::ScrEl3::Aw >(1); /* CPSR.A is non-secure writable. */
|
|
scr.Set<hw::ScrEl3::Net >(0); /* This bit is not implemented. */
|
|
scr.Set<hw::ScrEl3::Smd >(0); /* Secure Monitor Call is allowed. */
|
|
scr.Set<hw::ScrEl3::Hce >(0); /* Hypervisor Calls are disabled. */ /* TODO: Enable for thermosphere? */
|
|
scr.Set<hw::ScrEl3::Sif >(1); /* Secure mode cannot fetch instructions from non-secure memory. */
|
|
scr.Set<hw::ScrEl3::RwCortexA53>(1); /* Reserved bit. N probably sets it because on Cortex A53, this sets kernel as aarch64. */
|
|
scr.Set<hw::ScrEl3::StCortexA53>(0); /* Reserved bit. On Cortex A53, this sets secure registers to EL3 only. */
|
|
scr.Set<hw::ScrEl3::Twi >(0); /* WFI is not trapped. */
|
|
scr.Set<hw::ScrEl3::Twe >(0); /* WFE is not trapped. */
|
|
|
|
HW_CPU_SET_SCR_EL3(scr);
|
|
}
|
|
|
|
/* Set ttbr0_el3. */
|
|
{
|
|
constexpr u64 ttbr0 = MemoryRegionPhysicalTzramL1PageTable.GetAddress();
|
|
HW_CPU_SET_TTBR0_EL3(ttbr0);
|
|
}
|
|
|
|
/* Set tcr_el3. */
|
|
{
|
|
util::BitPack32 tcr = { hw::TcrEl3::Res1 };
|
|
tcr.Set<hw::TcrEl3::T0sz >(31); /* Configure TTBR0 addressed size to be 64 GiB */
|
|
tcr.Set<hw::TcrEl3::Irgn0>(1); /* Configure PTE walks as inner write-back write-allocate cacheable */
|
|
tcr.Set<hw::TcrEl3::Orgn0>(1); /* Configure PTE walks as outer write-back write-allocate cacheable */
|
|
tcr.Set<hw::TcrEl3::Sh0 >(3); /* Configure PTE walks as inner shareable */
|
|
tcr.Set<hw::TcrEl3::Tg0 >(0); /* Set TTBR0_EL3 granule as 4 KiB */
|
|
tcr.Set<hw::TcrEl3::Ps >(1); /* Set the physical addrss size as 36-bit (64 GiB) */
|
|
tcr.Set<hw::TcrEl3::Tbi >(0); /* Top byte is not ignored in addrss calculations */
|
|
|
|
HW_CPU_SET_TCR_EL3(tcr);
|
|
}
|
|
|
|
/* Clear cptr_el3. */
|
|
{
|
|
util::BitPack32 cptr = {};
|
|
|
|
cptr.Set<hw::CptrEl3::Tfp >(0); /* FP/SIMD instructions don't trap. */
|
|
cptr.Set<hw::CptrEl3::Tta >(0); /* Reserved bit (no trace functionality present). */
|
|
cptr.Set<hw::CptrEl3::Tcpac>(0); /* Access to cpacr_El1 does not trap. */
|
|
|
|
HW_CPU_SET_CPTR_EL3(cptr);
|
|
}
|
|
|
|
/* Set mair_el3. */
|
|
{
|
|
u64 mair = (MemoryRegionAttributes_Normal << (MemoryRegionAttributeWidth * MemoryAttributeIndexNormal)) |
|
|
(MemoryRegionAttributes_Device << (MemoryRegionAttributeWidth * MemoryAttributeIndexDevice));
|
|
HW_CPU_SET_MAIR_EL3(mair);
|
|
}
|
|
|
|
/* Set vectors. */
|
|
{
|
|
constexpr u64 vectors = MemoryRegionVirtualTzramProgramExceptionVectors.GetAddress();
|
|
HW_CPU_SET_VBAR_EL3(vectors);
|
|
}
|
|
|
|
/* Prevent instruction re-ordering around this point. */
|
|
hw::InstructionSynchronizationBarrier();
|
|
}
|
|
|
|
void EnableMmu() {
|
|
/* Create sctlr value. */
|
|
util::BitPack64 sctlr = { hw::SctlrEl3::Res1 };
|
|
sctlr.Set<hw::SctlrEl3::M>(1); /* Globally enable the MMU. */
|
|
sctlr.Set<hw::SctlrEl3::A>(0); /* Disable alignment fault checking. */
|
|
sctlr.Set<hw::SctlrEl3::C>(1); /* Globally enable the data and unified caches. */
|
|
sctlr.Set<hw::SctlrEl3::Sa>(0); /* Disable stack alignment checking. */
|
|
sctlr.Set<hw::SctlrEl3::I>(1); /* Globally enable the instruction cache. */
|
|
sctlr.Set<hw::SctlrEl3::Wxn>(0); /* Do not force writable pages to be ExecuteNever. */
|
|
sctlr.Set<hw::SctlrEl3::Ee>(0); /* Exceptions should be little endian. */
|
|
|
|
/* Ensure all writes are done before turning on the mmu. */
|
|
hw::DataSynchronizationBarrierInnerShareable();
|
|
|
|
/* Invalidate the entire tlb. */
|
|
hw::InvalidateEntireTlb();
|
|
|
|
/* Ensure instruction consistency. */
|
|
hw::DataSynchronizationBarrierInnerShareable();
|
|
hw::InstructionSynchronizationBarrier();
|
|
|
|
/* Set sctlr_el3. */
|
|
HW_CPU_SET_SCTLR_EL3(sctlr);
|
|
hw::InstructionSynchronizationBarrier();
|
|
}
|
|
|
|
}
|
|
|
|
void SetupCpuMemoryControllersEnableMmu() {
|
|
SetupCpuCommonControllers();
|
|
SetupCpuEl3Controllers();
|
|
EnableMmu();
|
|
}
|
|
|
|
void SetupSocDmaControllers() {
|
|
/* Ensure that our caches are managed. */
|
|
setup::InvalidateEntireDataCache();
|
|
setup::EnsureInstructionConsistency();
|
|
|
|
/* Lock tsec. */
|
|
tsec::Lock();
|
|
|
|
/* Enable SWID[0] for all bits. */
|
|
reg::Write(AHB_ARBC(AHB_MASTER_SWID), ~0u);
|
|
|
|
/* Clear SWID1 for all bits. */
|
|
reg::Write(AHB_ARBC(AHB_MASTER_SWID_1), 0u);
|
|
|
|
/* Set MSELECT config to set WRAP_TO_INCR_SLAVE0(APC) | WRAP_TO_INCR_SLAVE1(PCIe) | WRAP_TO_INCR_SLAVE2(GPU) */
|
|
/* and clear ERR_RESP_EN_SLAVE1(PCIe) | ERR_RESP_EN_SLAVE2(GPU) */
|
|
{
|
|
auto mselect_cfg = reg::Read(MSELECT(MSELECT_CONFIG));
|
|
mselect_cfg &= ~(1u << 24); /* Clear ERR_RESP_EN_SLAVE1(PCIe) */
|
|
mselect_cfg &= ~(1u << 25); /* Clear ERR_RESP_EN_SLAVE2(GPU) */
|
|
mselect_cfg |= (1u << 27); /* Set WRAP_TO_INCR_SLAVE0(APC) */
|
|
mselect_cfg |= (1u << 28); /* Set WRAP_TO_INCR_SLAVE1(PCIe) */
|
|
mselect_cfg |= (1u << 29); /* Set WRAP_TO_INCR_SLAVE2(GPU) */
|
|
reg::Write(MSELECT(MSELECT_CONFIG), mselect_cfg);
|
|
}
|
|
|
|
/* Disable USB, USB2, AHB-DMA from arbitration. */
|
|
{
|
|
auto arb_dis = reg::Read(AHB_ARBC(AHB_ARBITRATION_DISABLE));
|
|
arb_dis |= (1u << 5); /* Disable AHB-DMA */
|
|
arb_dis |= (1u << 6); /* Disable USB */
|
|
arb_dis |= (1u << 18); /* Disable USB2 */
|
|
reg::Write(AHB_ARBC(AHB_ARBITRATION_DISABLE), arb_dis);
|
|
}
|
|
|
|
/* Select high priority group with priority 7. */
|
|
{
|
|
u32 priority_ctrl = {};
|
|
priority_ctrl |= (7u << 29); /* Set group 7. */
|
|
priority_ctrl |= (1u << 0); /* Set high priority. */
|
|
reg::Write(AHB_ARBC(AHB_ARBITRATION_PRIORITY_CTRL), priority_ctrl);
|
|
}
|
|
|
|
/* Prevent splitting AHB writes to TZRAM. */
|
|
{
|
|
reg::Write(AHB_ARBC(AHB_GIZMO_TZRAM), (1u << 7));
|
|
}
|
|
}
|
|
|
|
} |