diff --git a/libexosphere/include/exosphere/hw/hw_arm64_system_registers.hpp b/libexosphere/include/exosphere/hw/hw_arm64_system_registers.hpp
index 5792ee71..26f7298b 100644
--- a/libexosphere/include/exosphere/hw/hw_arm64_system_registers.hpp
+++ b/libexosphere/include/exosphere/hw/hw_arm64_system_registers.hpp
@@ -43,6 +43,15 @@ namespace ams::hw::arch::arm64 {
     #define HW_CPU_GET_VBAR_EL3(value) HW_CPU_GET_SYSREG(vbar_el3, value)
     #define HW_CPU_SET_VBAR_EL3(value) HW_CPU_SET_SYSREG(vbar_el3, value)
 
+    #define HW_CPU_GET_ELR_EL3(value) HW_CPU_GET_SYSREG(elr_el3, value)
+    #define HW_CPU_SET_ELR_EL3(value) HW_CPU_SET_SYSREG(elr_el3, value)
+
+    #define HW_CPU_GET_FAR_EL3(value) HW_CPU_GET_SYSREG(far_el3, value)
+    #define HW_CPU_SET_FAR_EL3(value) HW_CPU_SET_SYSREG(far_el3, value)
+
+    #define HW_CPU_GET_ESR_EL3(value) HW_CPU_GET_SYSREG(esr_el3, value)
+    #define HW_CPU_SET_ESR_EL3(value) HW_CPU_SET_SYSREG(esr_el3, value)
+
     #define HW_CPU_GET_CLIDR_EL1(value) HW_CPU_GET_SYSREG(clidr_el1, value)
     #define HW_CPU_SET_CLIDR_EL1(value) HW_CPU_SET_SYSREG(clidr_el1, value)
 
@@ -84,6 +93,9 @@ namespace ams::hw::arch::arm64 {
     #define HW_CPU_GET_DBGCLAIMCLR_EL1(value) HW_CPU_GET_SYSREG(dbgclaimclr_el1, value)
     #define HW_CPU_SET_DBGCLAIMCLR_EL1(value) HW_CPU_SET_SYSREG(dbgclaimclr_el1, value)
 
+    #define HW_CPU_GET_FAR_EL1(value) HW_CPU_GET_SYSREG(far_el1, value)
+    #define HW_CPU_SET_FAR_EL1(value) HW_CPU_SET_SYSREG(far_el1, value)
+
     #define HW_CPU_GET_DBGVCR32_EL2(value) HW_CPU_GET_SYSREG(dbgvcr32_el2, value)
     #define HW_CPU_SET_DBGVCR32_EL2(value) HW_CPU_SET_SYSREG(dbgvcr32_el2, value)
 
@@ -327,4 +339,10 @@ namespace ams::hw::arch::arm64 {
         using Rw = util::BitPack64::Field<31, 1>;
     };
 
+    struct EsrEl3 {
+        using Iss = util::BitPack32::Field< 0, 25>;
+        using Il  = util::BitPack32::Field<25,  1>;
+        using Ec  = util::BitPack32::Field<26,  6>;
+    };
+
 }
diff --git a/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp b/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp
index 620b0886..fb9f3575 100644
--- a/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp
+++ b/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp
@@ -143,7 +143,8 @@ namespace ams::secmon {
         HANDLER(I2c1,                           Gpio, UINT64_C(0x7000C000),  UINT64_C(0x1000),  true, ## __VA_ARGS__) \
         HANDLER(ExceptionVectors,               I2c1, UINT64_C(0x6000F000),  UINT64_C(0x1000),  true, ## __VA_ARGS__) \
         HANDLER(MemoryController0,  ExceptionVectors, UINT64_C(0x7001C000),  UINT64_C(0x1000),  true, ## __VA_ARGS__) \
-        HANDLER(MemoryController1, MemoryController0, UINT64_C(0x7001D000),  UINT64_C(0x1000),  true, ## __VA_ARGS__)
+        HANDLER(MemoryController1, MemoryController0, UINT64_C(0x7001D000),  UINT64_C(0x1000),  true, ## __VA_ARGS__) \
+        HANDLER(Sdmmc,             MemoryController1, UINT64_C(0x700B0000),  UINT64_C(0x1000),  true, ## __VA_ARGS__)
 
     #define DEFINE_DEVICE_REGION(_NAME_, _PREV_, _ADDRESS_, _SIZE_, _SECURE_)                                                                                      \
         constexpr inline const MemoryRegion MemoryRegionVirtualDevice##_NAME_  = MemoryRegion(MemoryRegionVirtualDevice##_PREV_.GetEndAddress() + 0x1000, _SIZE_); \
@@ -258,6 +259,15 @@ namespace ams::secmon {
     static_assert(MemoryRegionVirtual.Contains(MemoryRegionVirtualDramSecureDataStore));
     static_assert(MemoryRegionDram.Contains(MemoryRegionPhysicalDramSecureDataStore));
 
+    constexpr inline const MemoryRegion MemoryRegionVirtualDramSdmmc1L0DevicePageTable  = MemoryRegion(UINT64_C(0x1F010F000), 0x1000);
+    constexpr inline const MemoryRegion MemoryRegionPhysicalDramSdmmc1L0DevicePageTable = MemoryRegion( UINT64_C(0x8001F000), 0x1000);
+
+    constexpr inline const MemoryRegion MemoryRegionVirtualDramSdmmc1L1DevicePageTable  = MemoryRegion(UINT64_C(0x1F010E000), 0x1000);
+    constexpr inline const MemoryRegion MemoryRegionPhysicalDramSdmmc1L1DevicePageTable = MemoryRegion( UINT64_C(0x8001E000), 0x1000);
+
+    constexpr inline const MemoryRegion MemoryRegionVirtualDramSdmmcMappedData = MemoryRegion(UINT64_C(0x1F0100000), 0xE000);
+    constexpr inline const MemoryRegion MemoryRegionPhysicalDramSdmmcMappedData = MemoryRegion(UINT64_C(0x80010000), 0xE000);
+
     constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreTzram               = MemoryRegion(UINT64_C(0x1F0100000), 0xE000);
     constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreWarmbootFirmware    = MemoryRegion(UINT64_C(0x1F010E000), 0x17C0);
     constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreSecurityEngineState = MemoryRegion(UINT64_C(0x1F010F7C0), 0x0840);
diff --git a/libstratosphere/include/stratosphere/ams/ams_exosphere_api.hpp b/libstratosphere/include/stratosphere/ams/ams_exosphere_api.hpp
index bc0efd13..69bbb4d8 100644
--- a/libstratosphere/include/stratosphere/ams/ams_exosphere_api.hpp
+++ b/libstratosphere/include/stratosphere/ams/ams_exosphere_api.hpp
@@ -23,6 +23,7 @@ namespace ams::exosphere {
 
     void ForceRebootToRcm();
     void ForceRebootToIramPayload();
+    void ForceRebootToFatalError();
     void ForceShutdown();
 
     bool IsRcmBugPatched();
diff --git a/libstratosphere/source/ams/ams_exosphere_api.cpp b/libstratosphere/source/ams/ams_exosphere_api.cpp
index a8cf21b9..502288b9 100644
--- a/libstratosphere/source/ams/ams_exosphere_api.cpp
+++ b/libstratosphere/source/ams/ams_exosphere_api.cpp
@@ -36,6 +36,10 @@ namespace ams::exosphere {
         R_ABORT_UNLESS(spl::smc::ConvertResult(spl::smc::SetConfig(spl::ConfigItem::ExosphereNeedsReboot, 2)));
     }
 
+    void ForceRebootToFatalError() {
+        R_ABORT_UNLESS(spl::smc::ConvertResult(spl::smc::SetConfig(spl::ConfigItem::ExosphereNeedsReboot, 3)));
+    }
+
     void ForceShutdown() {
         R_ABORT_UNLESS(spl::smc::ConvertResult(spl::smc::SetConfig(spl::ConfigItem::ExosphereNeedsShutdown, 1)));
     }
diff --git a/libvapours/source/dd/dd_io_mapping.cpp b/libvapours/source/dd/dd_io_mapping.cpp
index 1bbdeb8c..966de2fb 100644
--- a/libvapours/source/dd/dd_io_mapping.cpp
+++ b/libvapours/source/dd/dd_io_mapping.cpp
@@ -28,9 +28,20 @@ namespace ams::dd {
     uintptr_t QueryIoMapping(dd::PhysicalAddress phys_addr, size_t size) {
         #if defined(ATMOSPHERE_IS_EXOSPHERE)
             #if defined(ATMOSPHERE_ARCH_ARM64)
-                /* TODO: Secure Monitor translation? */
-                AMS_UNUSED(size);
-                return static_cast<uintptr_t>(phys_addr);
+                /* TODO: Do this in a less shitty way. */
+                if (secmon::MemoryRegionPhysicalDeviceClkRst.Contains(phys_addr, size)) {
+                    return secmon::MemoryRegionVirtualDeviceClkRst.GetAddress() + phys_addr - secmon::MemoryRegionPhysicalDeviceClkRst.GetAddress();
+                } else if (secmon::MemoryRegionPhysicalDeviceGpio.Contains(phys_addr, size)) {
+                    return secmon::MemoryRegionVirtualDeviceGpio.GetAddress() + phys_addr - secmon::MemoryRegionPhysicalDeviceGpio.GetAddress();
+                } else if (secmon::MemoryRegionPhysicalDeviceApbMisc.Contains(phys_addr, size)) {
+                    return secmon::MemoryRegionVirtualDeviceApbMisc.GetAddress() + phys_addr - secmon::MemoryRegionPhysicalDeviceApbMisc.GetAddress();
+                } else if (secmon::MemoryRegionPhysicalDeviceSdmmc.Contains(phys_addr, size)) {
+                    return secmon::MemoryRegionVirtualDeviceSdmmc.GetAddress() + phys_addr - secmon::MemoryRegionPhysicalDeviceSdmmc.GetAddress();
+                } else {
+                    AMS_UNUSED(size);
+                    return static_cast<uintptr_t>(phys_addr);
+                }
+
             #elif defined(ATMOSPHERE_ARCH_ARM)
                 /* TODO: BPMP translation? */
                 AMS_UNUSED(size);
diff --git a/libvapours/source/sdmmc/impl/sdmmc_i_host_controller.hpp b/libvapours/source/sdmmc/impl/sdmmc_i_host_controller.hpp
index 3ac28576..f4439bb7 100644
--- a/libvapours/source/sdmmc/impl/sdmmc_i_host_controller.hpp
+++ b/libvapours/source/sdmmc/impl/sdmmc_i_host_controller.hpp
@@ -143,9 +143,9 @@ namespace ams::sdmmc::impl {
             virtual void SetWorkBuffer(void *wb, size_t wb_size) = 0;
 
             virtual Result Startup(BusPower bus_power, BusWidth bus_width, SpeedMode speed_mode, bool power_saving_enable) = 0;
-            virtual void Shutdown();
-            virtual void PutToSleep();
-            virtual Result Awaken();
+            virtual void Shutdown()   = 0;
+            virtual void PutToSleep() = 0;
+            virtual Result Awaken()   = 0;
 
             virtual Result SwitchToSdr12();