Support for SD redirection, eMMC redirection to eMMC GPP partition/file

exosphere/program/source/smc/secmon_smc_info.cpp

@@ -279,12 +279,31 @@ namespace ams::secmon::smc {
                     break;
                 case ConfigItem::ExosphereAllowCalWrites:
                     /* Get whether this unit should allow writing to the calibration partition. */
-                    args.r[1] = (GetEmummcConfiguration().IsEmummcActive() || GetSecmonConfiguration().AllowWritingToCalibrationBinarySysmmc());
+                    args.r[1] = (GetEmummcEmmcConfiguration().IsActive() || GetSecmonConfiguration().AllowWritingToCalibrationBinarySysmmc());
                     break;
-                case ConfigItem::ExosphereEmummcType:
-                    /* Get what kind of emummc this unit has active. */
-                    /* NOTE: This may return values other than 1 in the future. */
-                    args.r[1] = (GetEmummcConfiguration().IsEmummcActive() ? 1 : 0);
+                case ConfigItem::ExosphereEmummcEmmcType:
+                    /* Get what kind of eMMC redirection this unit has active. */
+                    /* NOTE: Even when returning 0, the emummc driver may be used if SD is redirected */
+                    {
+                        auto &cfg = GetEmummcEmmcConfiguration();
+                        if(cfg.IsActive()) {
+                            args.r[1] = cfg.base_cfg.type;
+                        }else{
+                            args.r[1] = 0;
+                        }
+                    }
+                    break;
+                case ConfigItem::ExosphereEmummcSdType:
+                    /* Get what kind of SD redirection this unit has active. */
+                    /* NOTE: Even when returning 0, the emummc driver may be used if eMMC is redirected */
+                    {
+                        auto &cfg = GetEmummcSdConfiguration();
+                        if(cfg.IsActive()) {
+                            args.r[1] = cfg.base_cfg.type;
+                        }else{
+                            args.r[1] = 0;
+                        }
+                    }
                     break;
                 case ConfigItem::ExospherePayloadAddress:
                     /* Gets the physical address of the reboot payload buffer, if one exists. */
@@ -421,49 +440,65 @@ namespace ams::secmon::smc {
         const uintptr_t user_offset  = user_address % 4_KB;
 
         /* Validate arguments. */
-        /* NOTE: In the future, configuration for non-NAND storage may be implemented. */
-        SMC_R_UNLESS(mmc == EmummcMmc_Nand,                            NotSupported);
-        SMC_R_UNLESS(user_offset + 2 * sizeof(EmummcFilePath) <= 4_KB, InvalidArgument);
+        /* NOTE: Only eMMC and SD redirection supported. GC redirection may be supported in the future */
+        SMC_R_UNLESS(mmc == EmummcMmc_Nand || mmc == EmummcMmc_Sd,                              NotSupported);
+        SMC_R_UNLESS(mmc != EmummcMmc_Nand || user_offset + 2 * sizeof(EmummcFilePath) <= 4_KB, InvalidArgument);
 
-        /* Get the emummc config. */
-        const auto &cfg = GetEmummcConfiguration();
-        static_assert(sizeof(cfg.file_cfg)     == sizeof(EmummcFilePath));
-        static_assert(sizeof(cfg.emu_dir_path) == sizeof(EmummcFilePath));
-
-        /* Clear the output. */
         constexpr size_t InlineOutputSize = sizeof(args) - sizeof(args.r[0]);
         u8 * const inline_output = static_cast<u8 *>(static_cast<void *>(std::addressof(args.r[1])));
         std::memset(inline_output, 0, InlineOutputSize);
 
-        /* Copy out the configuration. */
-        {
-            /* Map the user output page. */
-            AtmosphereUserPageMapper mapper(user_address);
-            SMC_R_UNLESS(mapper.Map(), InvalidArgument);
+        if(mmc == EmummcMmc_Nand){
+            /* Copy emummc config for eMMC redirection */
+
+            /* Get emummc config for eMMC redirection */
+            const auto &cfg = GetEmummcEmmcConfiguration();
 
-            /* Copy the base configuration. */
             static_assert(sizeof(cfg.base_cfg) <= InlineOutputSize);
             std::memcpy(inline_output, std::addressof(cfg.base_cfg), sizeof(cfg.base_cfg));
 
-            /* Copy out type-specific data. */
-            switch (cfg.base_cfg.type) {
-                case EmummcType_None:
-                    /* No additional configuration needs to be copied. */
+            AtmosphereUserPageMapper mapper(user_address);
+            SMC_R_UNLESS(mapper.Map(), InvalidArgument);
+
+            switch(cfg.base_cfg.type){
+                case EmummcEmmcType_None:
+                    /* Nothing to copy if disabled */
                     break;
-                case EmummcType_Partition:
-                    /* Copy the partition config. */
+                case EmummcEmmcType_Partition_Emmc:
+                case EmummcEmmcType_Partition_Sd:
+                    /* Copy file config, if file based */
                     static_assert(sizeof(cfg.base_cfg) + sizeof(cfg.partition_cfg) <= InlineOutputSize);
                     std::memcpy(inline_output + sizeof(cfg.base_cfg), std::addressof(cfg.partition_cfg), sizeof(cfg.partition_cfg));
                     break;
-                case EmummcType_File:
-                    /* Copy the file config. */
+                case EmummcEmmcType_File_Emmc:
+                case EmummcEmmcType_File_Sd:
+                    /* Copy partition config, if partition based */
                     SMC_R_UNLESS(mapper.CopyToUser(user_address, std::addressof(cfg.file_cfg), sizeof(cfg.file_cfg)), InvalidArgument);
                     break;
                 AMS_UNREACHABLE_DEFAULT_CASE();
             }
 
-            /* Copy the redirection directory path to the user page. */
-            SMC_R_UNLESS(mapper.CopyToUser(user_address + sizeof(EmummcFilePath), std::addressof(cfg.emu_dir_path), sizeof(cfg.emu_dir_path)), InvalidArgument);
+            /* Copy the redirection directory path to the user page */
+            SMC_R_UNLESS(mapper.CopyToUser(user_address + sizeof(cfg.file_cfg), std::addressof(cfg.emu_dir_path), sizeof(cfg.emu_dir_path)), InvalidArgument);
+        }else if(mmc == EmummcMmc_Sd){
+            /* Copy emummc config for SD redirection */
+
+            /* Get emummc config for SD redirection */
+            const auto &cfg = GetEmummcSdConfiguration();
+
+            static_assert(sizeof(cfg.base_cfg) <= InlineOutputSize);
+            std::memcpy(inline_output, std::addressof(cfg.base_cfg), sizeof(cfg.base_cfg));
+
+            switch(cfg.base_cfg.type) {
+                case EmummcSdType_None:
+                    break;
+                case EmummcSdType_Partition_Emmc:
+                    static_assert(sizeof(cfg.base_cfg) + sizeof(cfg.partition_cfg) <= InlineOutputSize);
+                    std::memcpy(inline_output + sizeof(cfg.base_cfg), std::addressof(cfg.partition_cfg), sizeof(cfg.partition_cfg));
+                    break;
+                /* File based and SD partition based (currently) not supported for SD redirection */
+                AMS_UNREACHABLE_DEFAULT_CASE();
+            }
         }
 
         return SmcResult::Success;

exosphere/program/source/smc/secmon_smc_info.hpp

@@ -47,12 +47,13 @@ namespace ams::secmon::smc {
         ExosphereHasRcmBugPatch        = 65004,
         ExosphereBlankProdInfo         = 65005,
         ExosphereAllowCalWrites        = 65006,
-        ExosphereEmummcType            = 65007,
+        ExosphereEmummcEmmcType        = 65007,
         ExospherePayloadAddress        = 65008,
         ExosphereLogConfiguration      = 65009,
         ExosphereForceEnableUsb30      = 65010,
         ExosphereSupportedHosVersion   = 65011,
         ExosphereApproximateApiVersion = 65012,
+        ExosphereEmummcSdType          = 65013,
     };
 
     SmcResult SmcGetConfigUser(SmcArguments &args);

fusee/program/source/fusee_emummc.cpp

@@ -78,7 +78,7 @@ namespace ams::nxboot {
                     u32 num_sectors;
                     R_TRY(GetMmcMemoryCapacity(std::addressof(num_sectors), Partition));
 
-                    *out = num_sectors * sdmmc::SectorSize;
+                    *out = static_cast<s64>(num_sectors) * static_cast<s64>(sdmmc::SectorSize);
                     R_SUCCEED();
                 }
 

libraries/libexosphere/include/exosphere/secmon/secmon_configuration_context.arch.arm64.hpp

@@ -28,7 +28,7 @@ namespace ams::secmon {
         };
         union {
             EmummcConfiguration emummc_cfg;
-            u8 _raw_emummc_config[0x120];
+            u8 _raw_emummc_config[0x128];
         };
         u8 sealed_device_keys[pkg1::KeyGeneration_Max][se::AesBlockSize];
         u8 sealed_master_keys[pkg1::KeyGeneration_Max][se::AesBlockSize];
@@ -88,8 +88,12 @@ namespace ams::secmon {
         return GetConfigurationContext().secmon_cfg;
     }
 
-    ALWAYS_INLINE const EmummcConfiguration &GetEmummcConfiguration() {
-        return GetConfigurationContext().emummc_cfg;
+    ALWAYS_INLINE const EmummcEmmcConfiguration &GetEmummcEmmcConfiguration() {
+        return GetConfigurationContext().emummc_cfg.emmc_cfg;
+    }
+
+    ALWAYS_INLINE const EmummcSdConfiguration &GetEmummcSdConfiguration() {
+        return GetConfigurationContext().emummc_cfg.sd_cfg;
     }
 
     ALWAYS_INLINE const pkg1::BootConfig &GetBootConfig() {

libraries/libexosphere/include/exosphere/secmon/secmon_emummc_context.hpp

@@ -18,10 +18,21 @@
 
 namespace ams::secmon {
 
-    enum EmummcType : u32 {
-        EmummcType_None      = 0,
-        EmummcType_Partition = 1,
-        EmummcType_File      = 2,
+    enum EmummcEmmcType : u32 {
+        EmummcEmmcType_None           = 0,
+        EmummcEmmcType_Partition_Sd   = 1,
+        EmummcEmmcType_File_Sd        = 2,
+        EmummcEmmcType_Partition_Emmc = 3,
+        EmummcEmmcType_File_Emmc      = 4,
+    };
+
+    enum EmummcSdType : u32 {
+        EmummcSdType_None           = 0,
+        EmummcSdType_Partition_Emmc = 3,
+        // Not (currently) supported
+        // EmummcSdType_Partition_Sd   = 1,
+        // EmummcSdType_File_Sd        = 2,
+        // EmummcSdType_File_Emmc      = 4,
     };
 
     enum EmummcMmc {
@@ -38,24 +49,6 @@ namespace ams::secmon {
     static_assert(util::is_pod<EmummcFilePath>::value);
     static_assert(sizeof(EmummcFilePath) == EmummcFilePathLengthMax);
 
-    struct EmummcBaseConfiguration {
-        static constexpr u32 Magic = util::FourCC<'E','F','S','0'>::Code;
-
-        u32 magic;
-        EmummcType type;
-        u32 id;
-        u32 fs_version;
-
-        constexpr bool IsValid() const {
-            return this->magic == Magic;
-        }
-
-        constexpr bool IsEmummcActive() const {
-            return this->IsValid() && this->type != EmummcType_None;
-        }
-    };
-    static_assert(util::is_pod<EmummcBaseConfiguration>::value);
-    static_assert(sizeof(EmummcBaseConfiguration) == 0x10);
 
     struct EmummcPartitionConfiguration {
         u64 start_sector;
@@ -67,8 +60,27 @@ namespace ams::secmon {
     };
     static_assert(util::is_pod<EmummcFileConfiguration>::value);
 
-    struct EmummcConfiguration {
-        EmummcBaseConfiguration base_cfg;
+    struct EmummcEmmcBaseConfiguration {
+        static constexpr u32 Magic = util::FourCC<'E','F','S','0'>::Code;
+        u32 magic;
+        EmummcEmmcType type;
+        u32 id;
+        u32 fs_version;
+
+        constexpr bool IsValid() const {
+            return this->magic == Magic;
+        }
+
+        constexpr bool IsActive() const {
+            return this->IsValid() && this->type != EmummcEmmcType::EmummcType_None;
+        }
+    };
+    static_assert(util::is_pod<EmummcEmmcBaseConfiguration>::value);
+    static_assert(sizeof(EmummcEmmcBaseConfiguration) == 0x10);
+
+
+    struct EmummcEmmcConfiguration {
+        EmummcEmmcBaseConfiguration base_cfg;
         union {
             EmummcPartitionConfiguration partition_cfg;
             EmummcFileConfiguration file_cfg;
@@ -79,10 +91,53 @@ namespace ams::secmon {
             return this->base_cfg.IsValid();
         }
 
-        constexpr bool IsEmummcActive() const {
-            return this->base_cfg.IsEmummcActive();
+        constexpr bool IsActive() const {
+            return this->base_cfg.IsActive();
         }
     };
+    static_assert(util::is_pod<EmummcEmmcConfiguration>::value);
+    static_assert(sizeof(EmummcEmmcConfiguration) == 0x110);
+
+    struct EmummcSdBaseConfiguration {
+        static constexpr u32 Magic = util::FourCC<'E','F','S','0'>::Code;
+        u32 magic;
+        EmummcSdType type;
+        u32 fs_version;
+
+        constexpr bool IsValid() const {
+            return this->magic == Magic;
+        }
+
+        constexpr bool IsActive() const {
+            return this->IsValid() && this->type != EmummcSdType::EmummcSdType_None;
+        }
+    };
+    static_assert(util::is_pod<EmummcSdBaseConfiguration>::value);
+    static_assert(sizeof(EmummcSdBaseConfiguration) == 0x0C);
+
+    struct EmummcSdConfiguration {
+        EmummcSdBaseConfiguration base_cfg;
+        union {
+            EmummcPartitionConfiguration partition_cfg;
+            // File based (currently) not supported
+            // EmummcFileConfiguration file_cfg
+        };
+
+        constexpr bool IsValid() const {
+            return this->base_cfg.IsValid();
+        }
+
+        constexpr bool IsActive() const {
+            return this->base_cfg.IsActive();
+        }
+    };
+    static_assert(util::is_pod<EmummcSdConfiguration>::value);
+    static_assert(sizeof(EmummcSdConfiguration) == 0x18);
+
+    struct EmummcConfiguration {
+        EmummcEmmcConfiguration emmc_cfg;
+        EmummcSdConfiguration sd_cfg;
+    };
     static_assert(util::is_pod<EmummcConfiguration>::value);
     static_assert(sizeof(EmummcConfiguration) <= 0x200);
 

libraries/libexosphere/include/exosphere/secmon/secmon_monitor_context.hpp

@@ -50,7 +50,7 @@ namespace ams::secmon {
         constexpr bool IsValid() const { return this->magic == Magic; }
     };
     static_assert(util::is_pod<SecureMonitorStorageConfiguration>::value);
-    static_assert(sizeof(SecureMonitorStorageConfiguration) == 0x130);
+    static_assert(sizeof(SecureMonitorStorageConfiguration) == 0x148);
 
     struct SecureMonitorConfiguration {
         ams::TargetFirmware target_firmware;