fusee_cpp: implement warmboot firmware load

fusee_cpp/program/source/fusee_setup_horizon.cpp

@@ -30,6 +30,7 @@ namespace ams::nxboot {
     namespace {
 
         constexpr inline const uintptr_t CLKRST  = secmon::MemoryRegionPhysicalDeviceClkRst.GetAddress();
+        constexpr inline const uintptr_t PMC     = secmon::MemoryRegionPhysicalDevicePmc.GetAddress();
         constexpr inline const uintptr_t MC      = secmon::MemoryRegionPhysicalDeviceMemoryController.GetAddress();
 
         constinit secmon::EmummcConfiguration g_emummc_cfg = {};
@@ -367,6 +368,180 @@ namespace ams::nxboot {
             return package2;
         }
 
+        constexpr inline const u8 PkcModulusErista[0x100] = {
+            0xF7, 0x86, 0x47, 0xAB, 0x71, 0x89, 0x81, 0xB5, 0xCF, 0x0C, 0xB0, 0xE8, 0x48, 0xA7, 0xFD, 0xAD,
+            0xCB, 0x4E, 0x4A, 0x52, 0x0B, 0x1A, 0x8E, 0xDE, 0x41, 0x87, 0x6F, 0xB7, 0x31, 0x05, 0x5F, 0xAA,
+            0xEA, 0x97, 0x76, 0x21, 0x20, 0x2B, 0x40, 0x48, 0x76, 0x55, 0x35, 0x03, 0xFE, 0x7F, 0x67, 0x62,
+            0xFD, 0x4E, 0xE1, 0x22, 0xF8, 0xF0, 0x97, 0x39, 0xEF, 0xEA, 0x47, 0x89, 0x3C, 0xDB, 0xF0, 0x02,
+            0xAD, 0x0C, 0x96, 0xCA, 0x82, 0xAB, 0xB3, 0xCB, 0x98, 0xC8, 0xDC, 0xC6, 0xAC, 0x5C, 0x93, 0x3B,
+            0x84, 0x3D, 0x51, 0x91, 0x9E, 0xC1, 0x29, 0x22, 0x95, 0xF0, 0xA1, 0x51, 0xBA, 0xAF, 0x5D, 0xC3,
+            0xAB, 0x04, 0x1B, 0x43, 0x61, 0x7D, 0xEA, 0x65, 0x95, 0x24, 0x3C, 0x51, 0x3E, 0x8F, 0xDB, 0xDB,
+            0xC1, 0xC4, 0x2D, 0x04, 0x29, 0x5A, 0xD7, 0x34, 0x6B, 0xCC, 0xF1, 0x06, 0xF9, 0xC9, 0xE1, 0xF9,
+            0x61, 0x52, 0xE2, 0x05, 0x51, 0xB1, 0x3D, 0x88, 0xF9, 0xA9, 0x27, 0xA5, 0x6F, 0x4D, 0xE7, 0x22,
+            0x48, 0xA5, 0xF8, 0x12, 0xA2, 0xC2, 0x5A, 0xA0, 0xBF, 0xC8, 0x76, 0x4B, 0x66, 0xFE, 0x1C, 0x73,
+            0x00, 0x29, 0x26, 0xCD, 0x18, 0x4F, 0xC2, 0xB0, 0x51, 0x77, 0x2E, 0x91, 0x09, 0x1B, 0x41, 0x5D,
+            0x89, 0x5E, 0xEE, 0x24, 0x22, 0x47, 0xE5, 0xE5, 0xF1, 0x86, 0x99, 0x67, 0x08, 0x28, 0x42, 0xF0,
+            0x58, 0x62, 0x54, 0xC6, 0x5B, 0xDC, 0xE6, 0x80, 0x85, 0x6F, 0xE2, 0x72, 0xB9, 0x7E, 0x36, 0x64,
+            0x48, 0x85, 0x10, 0xA4, 0x75, 0x38, 0x79, 0x76, 0x8B, 0x51, 0xD5, 0x87, 0xC3, 0x02, 0xC9, 0x1B,
+            0x93, 0x22, 0x49, 0xEA, 0xAB, 0xA0, 0xB5, 0xB1, 0x3C, 0x10, 0xC4, 0x71, 0xF0, 0xF1, 0x81, 0x1A,
+            0x3A, 0x9C, 0xFC, 0x51, 0x61, 0xB1, 0x4B, 0x18, 0xB2, 0x3D, 0xAA, 0xD6, 0xAC, 0x72, 0x26, 0xB7
+        };
+
+        constexpr inline const u8 PkcModulusDevelopmentErista[0x100] = {
+            0x37, 0x84, 0x14, 0xB3, 0x78, 0xA4, 0x7F, 0xD8, 0x71, 0x45, 0xCD, 0x90, 0x51, 0x51, 0xBF, 0x2C,
+            0x27, 0x03, 0x30, 0x46, 0xBE, 0x8F, 0x99, 0x3E, 0x9F, 0x36, 0x4D, 0xEB, 0xF7, 0x0E, 0x81, 0x7F,
+            0xE4, 0x6B, 0xA8, 0x42, 0x8A, 0xA5, 0x4F, 0x76, 0xCC, 0xCB, 0xC5, 0x31, 0xA8, 0x5A, 0x70, 0x51,
+            0x34, 0xBF, 0x1E, 0x8D, 0x6E, 0xCF, 0x05, 0x84, 0xCF, 0x8B, 0xE5, 0x9C, 0x3A, 0xA5, 0xCD, 0x1A,
+            0x9C, 0xAC, 0x59, 0x30, 0x09, 0x21, 0x3C, 0xBE, 0x07, 0x5C, 0x8D, 0x1C, 0xD1, 0xA3, 0xC9, 0x8F,
+            0x26, 0xE2, 0x99, 0xB2, 0x3C, 0x28, 0xAD, 0x63, 0x0F, 0xF5, 0xA0, 0x1C, 0xA2, 0x34, 0xC4, 0x0E,
+            0xDB, 0xD7, 0xE1, 0xA9, 0x5E, 0xE9, 0xA5, 0xA8, 0x64, 0x3A, 0xFC, 0x48, 0xB5, 0x97, 0xDF, 0x55,
+            0x7C, 0x9A, 0xD2, 0x8C, 0x32, 0x36, 0x1D, 0xC5, 0xA0, 0xC5, 0x66, 0xDF, 0x8A, 0xAD, 0x76, 0x18,
+            0x46, 0x3E, 0xDF, 0xD8, 0xEF, 0xB9, 0xE5, 0xDC, 0xCD, 0x08, 0x59, 0xBC, 0x36, 0x68, 0xD6, 0xFC,
+            0x3F, 0xFA, 0x11, 0x00, 0x0D, 0x50, 0xE0, 0x69, 0x0F, 0x70, 0x78, 0x7E, 0xD1, 0xA5, 0x85, 0xCD,
+            0x13, 0xBC, 0x42, 0x74, 0x33, 0x0C, 0x11, 0x24, 0x1E, 0x33, 0xD5, 0x31, 0xB7, 0x3E, 0x48, 0x94,
+            0xCC, 0x81, 0x29, 0x1E, 0xB1, 0xCF, 0x4C, 0x36, 0x7F, 0xE1, 0x1C, 0x15, 0xD4, 0x3F, 0xFB, 0x12,
+            0xC2, 0x73, 0x22, 0x16, 0x52, 0xE0, 0x5C, 0x4C, 0x94, 0xE0, 0x87, 0x47, 0xEA, 0xD0, 0x9F, 0x42,
+            0x9B, 0xAC, 0xB6, 0xB5, 0xB6, 0x34, 0xE4, 0x55, 0x49, 0xD7, 0xC0, 0xAE, 0xD4, 0x22, 0xB3, 0x5C,
+            0x87, 0x64, 0x42, 0xEC, 0x11, 0x6D, 0xBC, 0x09, 0xC0, 0x80, 0x07, 0xD0, 0xBD, 0xBA, 0x45, 0xFE,
+            0xD5, 0x52, 0xDA, 0xEC, 0x41, 0xA4, 0xAD, 0x7B, 0x36, 0x86, 0x18, 0xB4, 0x5B, 0xD1, 0x30, 0xBB
+        };
+
+        void LoadWarmbootFirmware(fuse::SocType soc_type, ams::TargetFirmware target_firmware, const u8 *package1) {
+            u8 *warmboot_dst     = secmon::MemoryRegionPhysicalIramWarmbootBin.GetPointer<u8>();
+            size_t warmboot_size = std::min(sizeof(GetSecondaryArchive().warmboot), secmon::MemoryRegionPhysicalIramWarmbootBin.GetSize());
+            if (soc_type == fuse::SocType_Erista) {
+                /* Copy the ams warmboot binary. */
+                std::memcpy(warmboot_dst, GetSecondaryArchive().warmboot, warmboot_size);
+
+                /* Set the rsa modulus. */
+                if (fuse::GetHardwareState() == fuse::HardwareState_Production) {
+                    std::memcpy(warmboot_dst + 0x10, PkcModulusErista, sizeof(PkcModulusErista));
+                } else {
+                    std::memcpy(warmboot_dst + 0x10, PkcModulusDevelopmentErista, sizeof(PkcModulusDevelopmentErista));
+                }
+            } else /* if (soc_type == fuse::SocType_Mariko) */ {
+                /* Declare path for mariko warmboot files. */
+                char warmboot_path[0x80] = "sdmc:/warmboot_mariko/wb_xx.bin";
+
+                auto UpdateWarmbootPath = [&warmboot_path](u8 fuses) {
+                    warmboot_path[0x19] = "0123456789abcdef"[(fuses >> 4) & 0xF];
+                    warmboot_path[0x1A] = "0123456789abcdef"[(fuses >> 0) & 0xF];
+                };
+
+                /* Get expected/burnt fuse counts. */
+                const u32 expected_fuses = fuse::GetExpectedFuseVersion(target_firmware);
+                const u32 burnt_fuses    = fuse::GetFuseVersion();
+                      u32 used_fuses     = expected_fuses;
+
+                /* Get warmboot from package1. */
+                const u8 *warmboot_src = nullptr;
+                size_t warmboot_src_size = 0;
+                {
+                    const u32 *package1_pk11 = reinterpret_cast<const u32 *>(package1 + (target_firmware >= ams::TargetFirmware_6_2_0 ? 0x7000 : 0x4000));
+                    if (std::memcmp(package1_pk11, "PK11", 4) != 0) {
+                        ShowFatalError("Invalid package1 magic!\n");
+                    }
+
+                    const u32 *package1_pk11_data = reinterpret_cast<const u32 *>(package1_pk11 + (0x20 / sizeof(u32)));
+                    for (size_t i = 0; i < 3; ++i) {
+                        switch (*package1_pk11_data) {
+                            case 0xD5034FDF:
+                                package1_pk11_data += package1_pk11[6] / sizeof(u32);
+                                break;
+                            case 0xE328F0C0:
+                            case 0xF0C0A7F0:
+                                package1_pk11_data += package1_pk11[4] / sizeof(u32);
+                                break;
+                            default:
+                                warmboot_src = reinterpret_cast<const u8 *>(package1_pk11_data);
+                                i = 3;
+                                break;
+                        }
+                    }
+
+                    warmboot_src_size = *package1_pk11_data;
+                    if (!(0x800 <= warmboot_src_size && warmboot_src_size < 0x1000)) {
+                        ShowFatalError("Package1 warmboot firmware seems invalid!\n");
+                    }
+
+                    /* If we should, save the current warmboot firmware. */
+                    UpdateWarmbootPath(expected_fuses);
+                    if (!IsFileExist(warmboot_path)) {
+                        fs::CreateDirectory("sdmc:/warmboot_mariko");
+                        fs::CreateFile(warmboot_path, warmboot_src_size);
+
+                        Result result;
+                        fs::FileHandle file;
+                        if (R_FAILED((result = fs::OpenFile(std::addressof(file), warmboot_path, fs::OpenMode_ReadWrite)))) {
+                            ShowFatalError("Failed to save %s!\n", warmboot_path);
+                        }
+
+                        ON_SCOPE_EXIT { fs::CloseFile(file); };
+
+                        if (R_FAILED((result = fs::WriteFile(file, 0, warmboot_src, warmboot_src_size, fs::WriteOption::Flush)))) {
+                            ShowFatalError("Failed to save %s!\n", warmboot_path);
+                        }
+                    }
+
+                    /* If we need to, find a cached warmboot firmware that we can use. */
+                    if (burnt_fuses > expected_fuses) {
+                        warmboot_src = nullptr;
+                        warmboot_src_size = 0;
+                        for (u32 attempt = burnt_fuses; attempt <= 32; ++attempt) {
+                            /* Open the current cache file. */
+                            UpdateWarmbootPath(attempt);
+
+                            fs::FileHandle file;
+                            if (R_FAILED(fs::OpenFile(std::addressof(file), warmboot_path, fs::OpenMode_Read))) {
+                                continue;
+                            }
+                            ON_SCOPE_EXIT { fs::CloseFile(file); };
+
+                            /* Get the size. */
+                            s64 size;
+                            if (R_FAILED(fs::GetFileSize(std::addressof(size), file)) || !(0x800 <= size && size < 0x1000)) {
+                                continue;
+                            }
+
+                            /* Allocate memory. */
+                            warmboot_src_size = static_cast<size_t>(size);
+                            void *tmp = AllocateMemory(warmboot_src_size);
+
+                            /* Read the file. */
+                            if (R_FAILED(fs::ReadFile(file, 0, tmp, warmboot_src_size))) {
+                                continue;
+                            }
+
+                            /* Use the cached file. */
+                            used_fuses   = attempt;
+                            warmboot_src = static_cast<const u8 *>(tmp);
+                            break;
+                        }
+                    }
+
+                    /* Check that we found a firmware. */
+                    if (warmboot_src == nullptr) {
+                        ShowFatalError("Failed to locate warmboot firmware!\n");
+                    }
+
+                    /* Copy the warmboot firmware. */
+                    std::memcpy(warmboot_dst, warmboot_src, std::min(warmboot_size, warmboot_src_size));
+
+                    /* Set the warmboot firmware magic. */
+                    switch (used_fuses) {
+                        case 7:
+                            reg::Write(PMC + APBDEV_PMC_SECURE_SCRATCH32, 0x87);
+                        case 8:
+                            reg::Write(PMC + APBDEV_PMC_SECURE_SCRATCH32, 0xA8);
+                        default:
+                            reg::Write(PMC + APBDEV_PMC_SECURE_SCRATCH32, (0x108 + 0x21 * (used_fuses - 8)));
+                            break;
+                    }
+                    reg::SetBits(PMC + APBDEV_PMC_SEC_DISABLE3, (1 << 16));
+                }
+            }
+        }
+
     }
 
     void SetupAndStartHorizon() {
@@ -388,13 +563,13 @@ namespace ams::nxboot {
 
         /* Get target firmware. */
         const auto target_firmware = GetTargetFirmware(package1);
-        AMS_UNUSED(target_firmware);
 
         /* Read/decrypt package2. */
         u8 * const package2 = LoadBootConfigAndPackage2();
         AMS_UNUSED(package2);
 
-        /* TODO: Setup warmboot firmware. */
+        /* Setup warmboot firmware. */
+        LoadWarmbootFirmware(soc_type, target_firmware, package1);
 
         /* TODO: Setup exosphere. */
 

libraries/libexosphere/include/exosphere/fuse.hpp

@@ -113,6 +113,7 @@ namespace ams::fuse {
 
     SocType         GetSocType();
     int             GetExpectedFuseVersion(TargetFirmware target_fw);
+    int             GetFuseVersion();
     bool            HasRcmVulnerabilityPatch();
 
     bool IsOdmProductionMode();

libraries/libexosphere/source/fuse/fuse_api.cpp

@@ -394,6 +394,10 @@ namespace ams::fuse {
         return GetExpectedFuseVersionImpl(target_fw);
     }
 
+    int GetFuseVersion() {
+        return util::PopCount(GetCommonOdmWord(7));
+    }
+
     bool HasRcmVulnerabilityPatch() {
         /* Only check for RCM bug patch once, and cache our result. */
         if (!g_checked_for_rcm_bug_patch) {