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kern: move KTargetSystem into .rodata, split init/verify

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This commit is contained in:
Michael Scire 2024-10-09 15:12:46 -07:00
parent 117da7ff37
commit e200dfb48c
6 changed files with 83 additions and 54 deletions
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1
libraries/libmesosphere/include/mesosphere/board/nintendo/nx/kern_k_system_control.hpp
View file

@ -45,6 +45,7 @@ namespace ams::kern::board::nintendo::nx {
};
public:
/* Initialization. */
static NOINLINE void ConfigureKTargetSystem();
static NOINLINE void InitializePhase1();
static NOINLINE void InitializePhase2();
static NOINLINE u32 GetCreateProcessMemoryPool();

1
libraries/libmesosphere/include/mesosphere/kern_k_system_control_base.hpp
View file

@ -69,6 +69,7 @@ namespace ams::kern {
static NOINLINE void InitializePhase1Base(u64 seed);
public:
/* Initialization. */
static NOINLINE void ConfigureKTargetSystem();
static NOINLINE void InitializePhase1();
static NOINLINE void InitializePhase2();
static NOINLINE u32 GetCreateProcessMemoryPool();

49
libraries/libmesosphere/include/mesosphere/kern_k_target_system.hpp
View file

@ -24,29 +24,36 @@ namespace ams::kern {
friend class KSystemControlBase;
friend class KSystemControl;
private:
static inline constinit bool s_is_debug_mode;
static inline constinit bool s_enable_debug_logging;
static inline constinit bool s_enable_user_exception_handlers;
static inline constinit bool s_enable_debug_memory_fill;
static inline constinit bool s_enable_user_pmu_access;
static inline constinit bool s_enable_kernel_debugging;
static inline constinit bool s_enable_dynamic_resource_limits;
struct KTargetSystemData {
bool is_debug_mode;
bool enable_debug_logging;
bool enable_user_exception_handlers;
bool enable_debug_memory_fill;
bool enable_user_pmu_access;
bool enable_kernel_debugging;
bool enable_dynamic_resource_limits;
};
private:
static ALWAYS_INLINE void SetIsDebugMode(bool en) { s_is_debug_mode = en; }
static ALWAYS_INLINE void EnableDebugLogging(bool en) { s_enable_debug_logging = en; }
static ALWAYS_INLINE void EnableUserExceptionHandlers(bool en) { s_enable_user_exception_handlers = en; }
static ALWAYS_INLINE void EnableDebugMemoryFill(bool en) { s_enable_debug_memory_fill = en; }
static ALWAYS_INLINE void EnableUserPmuAccess(bool en) { s_enable_user_pmu_access = en; }
static ALWAYS_INLINE void EnableKernelDebugging(bool en) { s_enable_kernel_debugging = en; }
static ALWAYS_INLINE void EnableDynamicResourceLimits(bool en) { s_enable_dynamic_resource_limits = en; }
static inline constinit bool s_is_initialized = false;
static inline constinit const volatile KTargetSystemData s_data = {
.is_debug_mode = true,
.enable_debug_logging = true,
.enable_user_exception_handlers = true,
.enable_debug_memory_fill = true,
.enable_user_pmu_access = true,
.enable_kernel_debugging = true,
.enable_dynamic_resource_limits = false,
};
private:
static ALWAYS_INLINE void SetInitialized() { s_is_initialized = true; }
public:
static ALWAYS_INLINE bool IsDebugMode() { return s_is_debug_mode; }
static ALWAYS_INLINE bool IsDebugLoggingEnabled() { return s_enable_debug_logging; }
static ALWAYS_INLINE bool IsUserExceptionHandlersEnabled() { return s_enable_user_exception_handlers; }
static ALWAYS_INLINE bool IsDebugMemoryFillEnabled() { return s_enable_debug_memory_fill; }
static ALWAYS_INLINE bool IsUserPmuAccessEnabled() { return s_enable_user_pmu_access; }
static ALWAYS_INLINE bool IsKernelDebuggingEnabled() { return s_enable_kernel_debugging; }
static ALWAYS_INLINE bool IsDynamicResourceLimitsEnabled() { return s_enable_dynamic_resource_limits; }
static ALWAYS_INLINE bool IsDebugMode() { return s_is_initialized && s_data.is_debug_mode; }
static ALWAYS_INLINE bool IsDebugLoggingEnabled() { return s_is_initialized && s_data.enable_debug_logging; }
static ALWAYS_INLINE bool IsUserExceptionHandlersEnabled() { return s_is_initialized && s_data.enable_user_exception_handlers; }
static ALWAYS_INLINE bool IsDebugMemoryFillEnabled() { return s_is_initialized && s_data.enable_debug_memory_fill; }
static ALWAYS_INLINE bool IsUserPmuAccessEnabled() { return s_is_initialized && s_data.enable_user_pmu_access; }
static ALWAYS_INLINE bool IsKernelDebuggingEnabled() { return s_is_initialized && s_data.enable_kernel_debugging; }
static ALWAYS_INLINE bool IsDynamicResourceLimitsEnabled() { return s_is_initialized && s_data.enable_dynamic_resource_limits; }
};
}

53
libraries/libmesosphere/source/board/nintendo/nx/kern_k_system_control.cpp
View file

@ -26,7 +26,7 @@ namespace ams::kern::board::nintendo::nx {
constexpr size_t SecureSizeMax = util::AlignDown(512_MB - 1, SecureAlignment);
/* Global variables for panic. */
constinit bool g_call_smc_on_panic;
constinit const volatile bool g_call_smc_on_panic = false;
/* Global variables for secure memory. */
constinit KSpinLock g_secure_applet_lock;
@ -401,34 +401,67 @@ namespace ams::kern::board::nintendo::nx {
}
/* System Initialization. */
void KSystemControl::InitializePhase1() {
void KSystemControl::ConfigureKTargetSystem() {
/* Configure KTargetSystem. */
volatile auto *ts = const_cast<volatile KTargetSystem::KTargetSystemData *>(std::addressof(KTargetSystem::s_data));
{
/* Set IsDebugMode. */
{
KTargetSystem::SetIsDebugMode(GetConfigBool(smc::ConfigItem::IsDebugMode));
ts->is_debug_mode = GetConfigBool(smc::ConfigItem::IsDebugMode);
/* If debug mode, we want to initialize uart logging. */
KTargetSystem::EnableDebugLogging(KTargetSystem::IsDebugMode());
ts->enable_debug_logging = ts->is_debug_mode;
}
/* Set Kernel Configuration. */
{
const auto kernel_config = util::BitPack32{GetConfigU32(smc::ConfigItem::KernelConfiguration)};
KTargetSystem::EnableDebugMemoryFill(kernel_config.Get<smc::KernelConfiguration::DebugFillMemory>());
KTargetSystem::EnableUserExceptionHandlers(kernel_config.Get<smc::KernelConfiguration::EnableUserExceptionHandlers>());
KTargetSystem::EnableDynamicResourceLimits(!kernel_config.Get<smc::KernelConfiguration::DisableDynamicResourceLimits>());
KTargetSystem::EnableUserPmuAccess(kernel_config.Get<smc::KernelConfiguration::EnableUserPmuAccess>());
ts->enable_debug_memory_fill = kernel_config.Get<smc::KernelConfiguration::DebugFillMemory>();
ts->enable_user_exception_handlers = kernel_config.Get<smc::KernelConfiguration::EnableUserExceptionHandlers>();
ts->enable_dynamic_resource_limits = !kernel_config.Get<smc::KernelConfiguration::DisableDynamicResourceLimits>();
ts->enable_user_pmu_access = kernel_config.Get<smc::KernelConfiguration::EnableUserPmuAccess>();
g_call_smc_on_panic = kernel_config.Get<smc::KernelConfiguration::UseSecureMonitorPanicCall>();
/* Configure call smc on panic. */
*const_cast<volatile bool *>(std::addressof(g_call_smc_on_panic)) = kernel_config.Get<smc::KernelConfiguration::UseSecureMonitorPanicCall>();
}
/* Set Kernel Debugging. */
{
/* NOTE: This is used to restrict access to SvcKernelDebug/SvcChangeKernelTraceState. */
/* Mesosphere may wish to not require this, as we'd ideally keep ProgramVerification enabled for userland. */
KTargetSystem::EnableKernelDebugging(GetConfigBool(smc::ConfigItem::DisableProgramVerification));
ts->enable_kernel_debugging = GetConfigBool(smc::ConfigItem::DisableProgramVerification);
}
}
}
void KSystemControl::InitializePhase1() {
/* Enable KTargetSystem. */
KTargetSystem::SetInitialized();
/* Check KTargetSystem was configured correctly. */
{
/* Check IsDebugMode. */
{
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsDebugMode() == GetConfigBool(smc::ConfigItem::IsDebugMode));
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsDebugLoggingEnabled() == GetConfigBool(smc::ConfigItem::IsDebugMode));
}
/* Check Kernel Configuration. */
{
const auto kernel_config = util::BitPack32{GetConfigU32(smc::ConfigItem::KernelConfiguration)};
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsDebugMemoryFillEnabled() == kernel_config.Get<smc::KernelConfiguration::DebugFillMemory>());
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsUserExceptionHandlersEnabled() == kernel_config.Get<smc::KernelConfiguration::EnableUserExceptionHandlers>());
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsDynamicResourceLimitsEnabled() == !kernel_config.Get<smc::KernelConfiguration::DisableDynamicResourceLimits>());
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsUserPmuAccessEnabled() == kernel_config.Get<smc::KernelConfiguration::EnableUserPmuAccess>());
MESOSPHERE_ABORT_UNLESS(g_call_smc_on_panic == kernel_config.Get<smc::KernelConfiguration::UseSecureMonitorPanicCall>());
}
/* Check Kernel Debugging. */
{
MESOSPHERE_ABORT_UNLESS(KTargetSystem::IsKernelDebuggingEnabled() == GetConfigBool(smc::ConfigItem::DisableProgramVerification));
}
}

29
libraries/libmesosphere/source/kern_k_system_control_base.cpp
View file

@ -124,31 +124,14 @@ namespace ams::kern {
}
/* System Initialization. */
void KSystemControlBase::ConfigureKTargetSystem() {
/* By default, use the default config set in the KTargetSystem header. */
}
void KSystemControlBase::InitializePhase1() {
/* Configure KTargetSystem. */
/* Enable KTargetSystem. */
{
/* Set IsDebugMode. */
{
KTargetSystem::SetIsDebugMode(true);
/* If debug mode, we want to initialize uart logging. */
KTargetSystem::EnableDebugLogging(true);
}
/* Set Kernel Configuration. */
{
KTargetSystem::EnableDebugMemoryFill(false);
KTargetSystem::EnableUserExceptionHandlers(true);
KTargetSystem::EnableDynamicResourceLimits(true);
KTargetSystem::EnableUserPmuAccess(false);
}
/* Set Kernel Debugging. */
{
/* NOTE: This is used to restrict access to SvcKernelDebug/SvcChangeKernelTraceState. */
/* Mesosphere may wish to not require this, as we'd ideally keep ProgramVerification enabled for userland. */
KTargetSystem::EnableKernelDebugging(true);
}
KTargetSystem::SetInitialized();
}
/* Initialize random and resource limit. */

4
mesosphere/kernel/source/kern_kernel_instantiations.cpp
View file

@ -111,4 +111,8 @@ namespace ams::kern {
KThread &Kernel::GetMainThread(s32 core_id) { return g_main_threads.m_arr[core_id]; }
KThread &Kernel::GetIdleThread(s32 core_id) { return g_idle_threads.m_arr[core_id]; }
__attribute__((constructor)) void ConfigureKTargetSystem() {
KSystemControl::ConfigureKTargetSystem();
}
}