/* * Copyright (c) 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 <stratosphere.hpp> namespace ams::hos { namespace { constinit os::SdkMutex g_hos_init_lock; constinit hos::Version g_hos_version; constinit bool g_set_hos_version; Result GetExosphereApiInfo(exosphere::ApiInfo *out) { u64 exosphere_cfg; R_TRY_CATCH(spl::impl::GetConfig(std::addressof(exosphere_cfg), spl::ConfigItem::ExosphereApiVersion)) { R_CATCH_RETHROW(spl::ResultSecureMonitorNotInitialized) } R_END_TRY_CATCH_WITH_ABORT_UNLESS; *out = { exosphere_cfg }; R_SUCCEED(); } #if defined(ATMOSPHERE_OS_HORIZON) Result GetApproximateExosphereApiInfo(exosphere::ApiInfo *out) { u64 exosphere_cfg; R_TRY_CATCH(spl::impl::GetConfig(std::addressof(exosphere_cfg), spl::ConfigItem::ExosphereApproximateApiVersion)) { R_CATCH_RETHROW(spl::ResultSecureMonitorBusy) } R_END_TRY_CATCH_WITH_ABORT_UNLESS; *out = { exosphere_cfg }; R_SUCCEED(); } #endif exosphere::ApiInfo GetExosphereApiInfo(bool allow_approximate) { exosphere::ApiInfo info; #if defined(ATMOSPHERE_OS_HORIZON) while (true) { if (R_SUCCEEDED(GetExosphereApiInfo(std::addressof(info)))) { break; } if (allow_approximate && R_SUCCEEDED(GetApproximateExosphereApiInfo(std::addressof(info)))) { break; } svc::SleepThread(TimeSpan::FromMilliSeconds(25).GetNanoSeconds()); } #else AMS_UNUSED(allow_approximate); R_ABORT_UNLESS(GetExosphereApiInfo(std::addressof(info))); #endif return info; } } bool IsUnitTestProgramForSetVersion(); void InitializeVersionInternal(bool allow_approximate) { hos::Version current = hos::Version_Current; /* If we're unit testing, just set the version and move on. */ if (IsUnitTestProgramForSetVersion()) { g_hos_version = hos::Version_Current; g_set_hos_version = true; } else { /* Get the current (and previous approximation of) target firmware. */ hos::Version prev; bool has_prev = false; { /* Acquire exclusive access to set hos version. */ std::scoped_lock lk(g_hos_init_lock); /* Save the previous value of g_hos_version. */ prev = g_hos_version; has_prev = g_set_hos_version; /* Set hos version = exosphere api version target firmware. */ g_hos_version = static_cast<hos::Version>(GetExosphereApiInfo(allow_approximate).GetTargetFirmware()); /* Save the current value of g_hos_version. */ current = g_hos_version; /* Note that we've set a previous hos version. */ g_set_hos_version = true; } /* Ensure that this is a hos version we can sanely *try* to run. */ /* To be friendly, we will only require that we recognize the major and minor versions. */ /* We can consider only recognizing major in the future, but micro seems safe to ignore as */ /* there are no breaking IPC changes in minor updates. */ { constexpr u32 MaxMajor = (static_cast<u32>(hos::Version_Max) >> 24) & 0xFF; constexpr u32 MaxMinor = (static_cast<u32>(hos::Version_Max) >> 16) & 0xFF; const u32 major = (static_cast<u32>(current) >> 24) & 0xFF; const u32 minor = (static_cast<u32>(current) >> 16) & 0xFF; const bool is_safely_tryable_version = (current <= hos::Version_Max) || (major == MaxMajor && minor <= MaxMinor); AMS_ABORT_UNLESS(is_safely_tryable_version); } /* Ensure that this is a hos version compatible with previous approximations. */ if (has_prev) { AMS_ABORT_UNLESS(current >= prev); const u32 current_major = (static_cast<u32>(current) >> 24) & 0xFF; const u32 prev_major = (static_cast<u32>(prev) >> 24) & 0xFF; AMS_ABORT_UNLESS(current_major == prev_major); } } #if defined(ATMOSPHERE_OS_HORIZON) /* Set the version for libnx. */ { const u32 major = (static_cast<u32>(current) >> 24) & 0xFF; const u32 minor = (static_cast<u32>(current) >> 16) & 0xFF; const u32 micro = (static_cast<u32>(current) >> 8) & 0xFF; hosversionSet((BIT(31)) | (MAKEHOSVERSION(major, minor, micro))); } #endif } ::ams::hos::Version GetVersion() { return g_hos_version; } }