mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-18 16:32:05 +00:00
267 lines
12 KiB
C++
267 lines
12 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_error.hpp"
|
|
#include "../secmon_misc.hpp"
|
|
#include "secmon_smc_common.hpp"
|
|
#include "secmon_smc_handler.hpp"
|
|
#include "secmon_smc_aes.hpp"
|
|
#include "secmon_smc_carveout.hpp"
|
|
#include "secmon_smc_device_unique_data.hpp"
|
|
#include "secmon_smc_error.hpp"
|
|
#include "secmon_smc_info.hpp"
|
|
#include "secmon_smc_memory_access.hpp"
|
|
#include "secmon_smc_power_management.hpp"
|
|
#include "secmon_smc_random.hpp"
|
|
#include "secmon_smc_register_access.hpp"
|
|
#include "secmon_smc_result.hpp"
|
|
#include "secmon_smc_rsa.hpp"
|
|
|
|
namespace ams::secmon::smc {
|
|
|
|
namespace {
|
|
|
|
struct HandlerInfo {
|
|
u32 function_id;
|
|
u32 restriction_mask;
|
|
SmcHandler handler;
|
|
};
|
|
|
|
struct HandlerTable {
|
|
const HandlerInfo *entries;
|
|
size_t count;
|
|
};
|
|
|
|
enum HandlerType : int {
|
|
HandlerType_User = 0,
|
|
HandlerType_Kern = 1,
|
|
HandlerType_Count = 2,
|
|
};
|
|
|
|
enum Restriction {
|
|
Restriction_None = (0 << 0),
|
|
Restriction_Normal = (1 << 0),
|
|
Restriction_DeviceUniqueDataNotAllowed = (1 << 1),
|
|
Restriction_SafeModeNotAllowed = (1 << 2),
|
|
};
|
|
|
|
enum SmcCallRange {
|
|
SmcCallRange_ArmArch = 0,
|
|
SmcCallRange_Cpu = 1,
|
|
SmcCallRange_Sip = 2,
|
|
SmcCallRange_Oem = 3,
|
|
SmcCallRange_Standard = 4,
|
|
|
|
SmcCallRange_TrustedApp = 0x30,
|
|
};
|
|
|
|
enum SmcArgumentType {
|
|
ArgumentType_Integer = 0,
|
|
ArgumentType_Pointer = 1,
|
|
};
|
|
|
|
enum SmcConvention {
|
|
Convention_Smc32 = 0,
|
|
Convention_Smc64 = 1,
|
|
};
|
|
|
|
enum SmcCallType {
|
|
SmcCallType_YieldingCall = 0,
|
|
SmcCallType_FastCall = 1,
|
|
};
|
|
|
|
struct SmcFunctionId {
|
|
using FunctionId = util::BitPack64::Field< 0, 8, u32>;
|
|
using ArgumentType0 = util::BitPack64::Field< 8, 1, SmcArgumentType>;
|
|
using ArgumentType1 = util::BitPack64::Field< 9, 1, SmcArgumentType>;
|
|
using ArgumentType2 = util::BitPack64::Field<10, 1, SmcArgumentType>;
|
|
using ArgumentType3 = util::BitPack64::Field<11, 1, SmcArgumentType>;
|
|
using ArgumentType4 = util::BitPack64::Field<12, 1, SmcArgumentType>;
|
|
using ArgumentType5 = util::BitPack64::Field<13, 1, SmcArgumentType>;
|
|
using ArgumentType6 = util::BitPack64::Field<14, 1, SmcArgumentType>;
|
|
using ArgumentType7 = util::BitPack64::Field<15, 1, SmcArgumentType>;
|
|
using Reserved = util::BitPack64::Field<16, 8, u32>;
|
|
using CallRange = util::BitPack64::Field<24, 6, SmcCallRange>;
|
|
using Convention = util::BitPack64::Field<30, 1, SmcConvention>;
|
|
using CallType = util::BitPack64::Field<31, 1, SmcCallType>;
|
|
using Reserved2 = util::BitPack64::Field<32, 32, u32>;
|
|
};
|
|
|
|
constinit HandlerInfo g_user_handlers[] = {
|
|
{ 0x00000000, Restriction_SafeModeNotAllowed, nullptr },
|
|
{ 0xC3000401, Restriction_SafeModeNotAllowed, SmcSetConfig },
|
|
{ 0xC3000002, Restriction_Normal, SmcGetConfigUser },
|
|
{ 0xC3000003, Restriction_Normal, SmcGetResult },
|
|
{ 0xC3000404, Restriction_Normal, SmcGetResultData },
|
|
{ 0xC3000E05, Restriction_SafeModeNotAllowed, SmcModularExponentiate },
|
|
{ 0xC3000006, Restriction_Normal, SmcGenerateRandomBytes },
|
|
{ 0xC3000007, Restriction_Normal, SmcGenerateAesKek },
|
|
{ 0xC3000008, Restriction_Normal, SmcLoadAesKey },
|
|
{ 0xC3000009, Restriction_Normal, SmcComputeAes },
|
|
{ 0xC300000A, Restriction_Normal, SmcGenerateSpecificAesKey },
|
|
{ 0xC300040B, Restriction_Normal, SmcComputeCmac },
|
|
{ 0xC300D60C, Restriction_Normal, SmcReencryptDeviceUniqueData },
|
|
{ 0xC300100D, Restriction_DeviceUniqueDataNotAllowed, SmcDecryptDeviceUniqueData },
|
|
{ 0xC300000E, Restriction_SafeModeNotAllowed, nullptr },
|
|
{ 0xC300060F, Restriction_DeviceUniqueDataNotAllowed, SmcModularExponentiateByStorageKey },
|
|
{ 0xC3000610, Restriction_SafeModeNotAllowed, SmcPrepareEsDeviceUniqueKey },
|
|
{ 0xC3000011, Restriction_SafeModeNotAllowed, SmcLoadPreparedAesKey },
|
|
{ 0xC3000012, Restriction_SafeModeNotAllowed, SmcPrepareEsCommonTitleKey }
|
|
};
|
|
|
|
/* Deprecated handlerss. */
|
|
constexpr inline const HandlerInfo DecryptAndImportEsDeviceKeyHandlerInfo = {
|
|
0xC300100C, Restriction_Normal, SmcDecryptAndImportEsDeviceKey
|
|
};
|
|
|
|
constexpr inline const HandlerInfo DecryptAndImportLotusKeyHandlerInfo = {
|
|
0xC300100E, Restriction_SafeModeNotAllowed, SmcDecryptAndImportLotusKey
|
|
};
|
|
|
|
constinit HandlerInfo g_kern_handlers[] = {
|
|
{ 0x00000000, Restriction_SafeModeNotAllowed, nullptr },
|
|
{ 0xC4000001, Restriction_SafeModeNotAllowed, SmcSuspendCpu },
|
|
{ 0x84000002, Restriction_SafeModeNotAllowed, SmcPowerOffCpu },
|
|
{ 0xC4000003, Restriction_SafeModeNotAllowed, SmcPowerOnCpu },
|
|
{ 0xC3000004, Restriction_Normal, SmcGetConfigKern },
|
|
{ 0xC3000005, Restriction_Normal, SmcGenerateRandomBytesNonBlocking },
|
|
{ 0xC3000006, Restriction_Normal, SmcShowError },
|
|
{ 0xC3000007, Restriction_Normal, SmcSetKernelCarveoutRegion },
|
|
{ 0xC3000008, Restriction_Normal, SmcReadWriteRegister },
|
|
|
|
/* NOTE: Atmosphere extension for mesosphere. This ID is subject to change at any time. */
|
|
{ 0xC3000409, Restriction_Normal, SmcSetConfig },
|
|
};
|
|
|
|
constinit HandlerInfo g_ams_handlers[] = {
|
|
{ 0x00000000, Restriction_SafeModeNotAllowed, nullptr },
|
|
{ 0xF0000201, Restriction_None, SmcIramCopy },
|
|
{ 0xF0000002, Restriction_None, SmcReadWriteRegister },
|
|
{ 0xF0000003, Restriction_None, SmcWriteAddress },
|
|
{ 0xF0000404, Restriction_None, SmcGetEmummcConfig },
|
|
};
|
|
|
|
constexpr const HandlerInfo GetSecureDataHandlerInfo = {
|
|
0x67891234, Restriction_None, SmcGetSecureData
|
|
};
|
|
|
|
constinit HandlerTable g_handler_tables[] = {
|
|
{ g_user_handlers, util::size(g_user_handlers) },
|
|
{ g_kern_handlers, util::size(g_kern_handlers) },
|
|
};
|
|
|
|
constinit HandlerTable g_ams_handler_table = {
|
|
g_ams_handlers, util::size(g_ams_handlers)
|
|
};
|
|
|
|
NORETURN void InvalidSmcError(u64 id) {
|
|
SetError(pkg1::ErrorInfo_UnknownSmc);
|
|
AMS_ABORT("Invalid SMC: %lx", id);
|
|
}
|
|
|
|
const HandlerTable &GetHandlerTable(HandlerType type, u64 id) {
|
|
/* Ensure we have a valid handler type. */
|
|
if (AMS_UNLIKELY(!(0 <= type && type < HandlerType_Count))) {
|
|
InvalidSmcError(id);
|
|
}
|
|
|
|
/* Provide support for legacy SmcGetSecureData. */
|
|
if (id == GetSecureDataHandlerInfo.function_id) {
|
|
return g_handler_tables[HandlerType_User];
|
|
}
|
|
|
|
/* Check if we're a user SMC. */
|
|
if (type == HandlerType_User) {
|
|
/* Nintendo uses OEM SMCs. */
|
|
/* We will assign Atmosphere extension SMCs the TrustedApplication range. */
|
|
if (util::BitPack64{id}.Get<SmcFunctionId::CallRange>() == SmcCallRange_TrustedApp) {
|
|
return g_ams_handler_table;
|
|
}
|
|
|
|
/* If we're not performing an atmosphere extension smc, require that we're being invoked by spl on core 3. */
|
|
if (AMS_UNLIKELY(hw::GetCurrentCoreId() != 3)) {
|
|
InvalidSmcError(id);
|
|
}
|
|
}
|
|
|
|
return g_handler_tables[type];
|
|
}
|
|
|
|
const HandlerInfo &GetHandlerInfo(const HandlerTable &table, u64 id) {
|
|
/* Provide support for legacy SmcGetSecureData. */
|
|
if (id == GetSecureDataHandlerInfo.function_id) {
|
|
return GetSecureDataHandlerInfo;
|
|
}
|
|
|
|
/* Get and check the index. */
|
|
const auto index = util::BitPack64{id}.Get<SmcFunctionId::FunctionId>();
|
|
if (AMS_UNLIKELY(index >= table.count)) {
|
|
InvalidSmcError(id);
|
|
}
|
|
|
|
/* Get and check the handler info. */
|
|
const auto &handler_info = table.entries[index];
|
|
|
|
/* Check that the handler isn't null. */
|
|
if (AMS_UNLIKELY(handler_info.handler == nullptr)) {
|
|
InvalidSmcError(id);
|
|
}
|
|
|
|
/* Check that the handler's id matches. */
|
|
if (AMS_UNLIKELY(handler_info.function_id != id)) {
|
|
InvalidSmcError(id);
|
|
}
|
|
|
|
return handler_info;
|
|
}
|
|
|
|
bool IsHandlerRestricted(const HandlerInfo &info) {
|
|
return (info.restriction_mask & secmon::GetRestrictedSmcMask()) != 0;
|
|
}
|
|
|
|
SmcResult InvokeSmcHandler(const HandlerInfo &info, SmcArguments &args) {
|
|
/* Check if the smc is restricted. */
|
|
if (GetTargetFirmware() >= TargetFirmware_8_0_0 && AMS_UNLIKELY(IsHandlerRestricted(info))) {
|
|
return SmcResult::NotPermitted;
|
|
}
|
|
|
|
/* Invoke the smc. */
|
|
return info.handler(args);
|
|
}
|
|
|
|
}
|
|
|
|
void ConfigureSmcHandlersForTargetFirmware() {
|
|
const auto target_fw = GetTargetFirmware();
|
|
|
|
if (target_fw < TargetFirmware_5_0_0) {
|
|
g_user_handlers[DecryptAndImportEsDeviceKeyHandlerInfo.function_id & 0xFF] = DecryptAndImportEsDeviceKeyHandlerInfo;
|
|
g_user_handlers[DecryptAndImportLotusKeyHandlerInfo.function_id & 0xFF] = DecryptAndImportLotusKeyHandlerInfo;
|
|
}
|
|
}
|
|
|
|
void HandleSmc(int type, SmcArguments &args) {
|
|
/* Get the table. */
|
|
const auto &table = GetHandlerTable(static_cast<HandlerType>(type), args.r[0]);
|
|
|
|
/* Get the handler info. */
|
|
const auto &info = GetHandlerInfo(table, args.r[0]);
|
|
|
|
/* Set the invocation result. */
|
|
args.r[0] = static_cast<u64>(InvokeSmcHandler(info, args));
|
|
}
|
|
|
|
}
|