Install: Hekate 8GB after copy (fuse >4GiB), dram_fuse helper, RAM test target

- Add dram_fuse.c/h for shared fuse-to-MiB mapping
- After successful update/clean install copy: if hekate_8gb.bin exists and
  fuse reports more than 4 GiB, copy to sd:/payload.bin and
  sd:/bootloader/update.bin, then remove source; otherwise remove helper only
- Makefile: make ram-test builds output/RAM-Test.bin (tools/ram_test_main.c)

Made-with: Cursor

.github/workflows/build.yml

@@ -1,7 +1,7 @@
 name: Build
 
 on:
-  #push:
+  push:
   workflow_dispatch:
 
 jobs:

Makefile

@@ -46,7 +46,11 @@ LDFLAGS = $(ARCH) -nostartfiles -lgcc -Wl,--nmagic,--gc-sections -Xlinker --defs
 
 ################################################################################
 
-.PHONY: all clean release
+RAMTEST_BIN := $(OUTPUTDIR)/RAM-Test.bin
+OBJS_RAMTEST := $(filter-out $(BUILDDIR)/$(TARGET)/main.o,$(OBJS)) \
+	$(BUILDDIR)/$(TARGET)/ram_test_main.o
+
+.PHONY: all clean release ram-test
 
 all: $(OUTPUTDIR)/$(OUTPUT_NAME)
 	$(eval BIN_SIZE = $(shell wc -c < $(OUTPUTDIR)/$(OUTPUT_NAME)))
@@ -56,6 +60,7 @@ all: $(OUTPUTDIR)/$(OUTPUT_NAME)
 clean:
 	@rm -rf $(BUILDDIR)
 	@rm -rf $(OUTPUTDIR)
+	@rm -f $(RAMTEST_BIN)
 	@rm -rf release
 	@rm -f $(TARGET)-*.zip
 
@@ -67,6 +72,20 @@ $(OUTPUTDIR)/$(OUTPUT_NAME): $(BUILDDIR)/$(TARGET)/$(TARGET).elf
 $(BUILDDIR)/$(TARGET)/$(TARGET).elf: $(OBJS)
 	$(CC) $(LDFLAGS) -T $(SOURCEDIR)/link.ld $^ -o $@
 
+$(BUILDDIR)/$(TARGET)/ram_test_main.o: tools/ram_test_main.c
+	@mkdir -p "$(@D)"
+	$(CC) $(CFLAGS) $(BDKINC) -I$(SOURCEDIR) -c $< -o $@
+
+$(BUILDDIR)/$(TARGET)/ram_test.elf: $(OBJS_RAMTEST)
+	$(CC) $(LDFLAGS) -T $(SOURCEDIR)/link.ld $^ -o $@
+
+$(RAMTEST_BIN): $(BUILDDIR)/$(TARGET)/ram_test.elf
+	@mkdir -p "$(@D)"
+	$(OBJCOPY) -S -O binary $< $@
+	@echo "RAM-Test payload: $(RAMTEST_BIN) ($$(wc -c < $@) bytes)"
+
+ram-test: $(RAMTEST_BIN)
+
 $(BUILDDIR)/$(TARGET)/%.o: $(SOURCEDIR)/%.c
 	@mkdir -p "$(@D)"
 	$(CC) $(CFLAGS) $(BDKINC) -I$(SOURCEDIR) -c $< -o $@

source/backup.c

@@ -6,97 +6,14 @@
 #include "fs.h"
 #include <libs/fatfs/ff.h>
 #include <string.h>
-#include <stdarg.h>
 #include <utils/sprintf.h>
 
-#define BACKUP_PATH_MAX 270
-
 // Check if file/directory exists
 static bool path_exists(const char *path) {
     FILINFO fno;
     return (f_stat(path, &fno) == FR_OK);
 }
 
-// Create all parent directories for a path (mkdir -p style)
-static void ensure_parent_dirs(const char *full_path) {
-    char buf[BACKUP_PATH_MAX];
-    int n = (int)strlen(full_path);
-    if (n >= BACKUP_PATH_MAX) return;
-    memcpy(buf, full_path, n + 1);
-
-    for (int i = 4; i < n; i++) {
-        if (buf[i] == '/') {
-            buf[i] = '\0';
-            f_mkdir(buf);
-            buf[i] = '/';
-        }
-    }
-}
-
-// Copy a single path (file or dir) to backup base, preserving SD structure
-static int backup_single_path(const char *src_path, const char *backup_base) {
-    FILINFO fno;
-    if (f_stat(src_path, &fno) != FR_OK)
-        return FR_OK;
-
-    const char *relative = src_path;
-    if (strncmp(relative, "sd:/", 4) == 0)
-        relative += 4;
-
-    if (fno.fattrib & AM_DIR) {
-        const char *last_slash = strrchr(relative, '/');
-        char parent[BACKUP_PATH_MAX];
-        if (last_slash && last_slash > relative) {
-            s_printf(parent, "%s/%.*s", backup_base, (int)(last_slash - relative), relative);
-            /* Create full parent hierarchy (e.g. atmosphere, atmosphere/contents) */
-            ensure_parent_dirs(parent);
-            f_mkdir(parent);  /* Ensure parent exists; FR_EXIST is fine */
-            return folder_copy(src_path, parent);
-        } else {
-            ensure_parent_dirs(backup_base);
-            return folder_copy(src_path, backup_base);
-        }
-    } else {
-        char dst_path[BACKUP_PATH_MAX];
-        s_printf(dst_path, "%s/%s", backup_base, relative);
-        ensure_parent_dirs(dst_path);
-        return file_copy(src_path, dst_path);
-    }
-}
-
-// Backup all paths from varargs lists (same structure as delete_path_lists_grouped)
-int backup_deletion_lists(const char *backup_base, ...) {
-    va_list ap;
-    const char **list;
-    int res = FR_OK;
-
-    /* FatFS f_mkdir only creates the last component; parent must exist first */
-    ensure_parent_dirs(BACKUP_BASE_PATH);
-    res = f_mkdir(BACKUP_BASE_PATH);
-    if (res != FR_OK && res != FR_EXIST)
-        return res;
-
-    ensure_parent_dirs(backup_base);
-    res = f_mkdir(backup_base);
-    if (res != FR_OK && res != FR_EXIST)
-        return res;
-
-    va_start(ap, backup_base);
-    while ((list = va_arg(ap, const char **)) != NULL) {
-        for (int i = 0; list[i] != NULL; i++) {
-            if (path_exists(list[i])) {
-                int copy_res = backup_single_path(list[i], backup_base);
-                if (copy_res != FR_OK && res == FR_OK)
-                    res = copy_res;  // Remember first error but keep going
-            }
-        }
-    }
-    va_end(ap);
-
-    /* Best-effort: return FR_OK so install continues even if some copies failed */
-    return FR_OK;
-}
-
 // Backup user data before clean install
 int backup_user_data(void) {
     int res;

source/backup.h

@@ -7,8 +7,6 @@
 #include <utils/types.h>
 
 #define TEMP_BACKUP_PATH "sd:/temp_backup"
-#define BACKUP_BASE_PATH "sd:/backup/OmniNX"
-#define PRE_OMNINX_LABEL "pre-omninx"
 
 // Backup user data (DBI, Tinfoil, prod.keys) before clean install
 int backup_user_data(void);
@@ -18,6 +16,3 @@ int restore_user_data(void);
 
 // Clean up temporary backup directory
 int cleanup_backup(void);
-
-// Backup paths from varargs lists to backup_base (pass path arrays, terminate with NULL)
-int backup_deletion_lists(const char *backup_base, ...);

source/deletion_lists_update.h

@@ -122,8 +122,8 @@ static const char* config_dirs_to_delete[] = {
 };
 
 // Switch directories to delete
-// NOTE: .packages is intentionally excluded - UltraHand package cache, preserve during updates
 static const char* switch_dirs_to_delete[] = {
+    "sd:/switch/.packages",
     "sd:/switch/.overlays",
     "sd:/switch/90DNS_tester",
     "sd:/switch/aio-switch-updater",
@@ -172,7 +172,6 @@ static const char* switch_dirs_to_delete[] = {
     "sd:/switch/Switch-Time",
     "sd:/switch/SwitchIdent",
     "sd:/switch/Switch_themes_Installer",
-    "sd:/switch/Switchfin",
     "sd:/switch/Sys-Clk Manager",
     "sd:/switch/Sys-Con",
     "sd:/switch/sys-clk-manager",
@@ -223,9 +222,9 @@ static const char* switch_files_to_delete[] = {
     "sd:/switch/SimpleModDownloader.nro",
     "sd:/switch/SimpleModManager.nro",
     "sd:/switch/sphaira.nro",
+    "sd:/switch/swr-ini-tool/swr-ini-tool.nro",
     "sd:/switch/SwitchIdent.nro",
     "sd:/switch/Switch_themes_Installer/NXThemesInstaller.nro",
-    "sd:/switch/Switchfin.nro",
     "sd:/switch/Sys-Clk Manager/sys-clk-manager.nro",
     "sd:/switch/Sys-Con.nro",
     "sd:/switch/sys-clk-manager.nro",

source/dram_fuse.c

@@ -0,0 +1,46 @@
+/*
+ * DRAM capacity from fuse (SKU), not physical probe.
+ */
+
+#include "dram_fuse.h"
+#include <soc/fuse.h>
+#include <soc/hw_init.h>
+#include <soc/t210.h>
+
+static int mariko_dram_mib(u32 dram_id)
+{
+	switch (dram_id) {
+	case 9:
+	case 13:
+	case 18:
+	case 21:
+	case 23:
+	case 28:
+		return 8192;
+	default:
+		if (dram_id >= 3 && dram_id <= 28)
+			return 4096;
+		return -1;
+	}
+}
+
+static int erista_dram_mib(u32 dram_id)
+{
+	if (dram_id == 4)
+		return 6144;
+	if (dram_id <= 6)
+		return 4096;
+	return -1;
+}
+
+int dram_capacity_mib_from_fuse(void)
+{
+	u32 nid = fuse_read_dramid(false);
+	u32 chip = hw_get_chip_id();
+
+	if (chip == GP_HIDREV_MAJOR_T210)
+		return erista_dram_mib(nid);
+	if (chip == GP_HIDREV_MAJOR_T210B01)
+		return mariko_dram_mib(nid);
+	return -1;
+}

source/dram_fuse.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <utils/types.h>
+
+/* DRAM capacity in MiB from fuse DRAM ID + SoC (same table as RAM test payload). */
+int dram_capacity_mib_from_fuse(void);

source/install.c

@@ -3,6 +3,7 @@
  */
 
 #include "install.h"
+#include "dram_fuse.h"
 #include "fs.h"
 #include "version.h"
 #include "gfx.h"
@@ -113,6 +114,38 @@ void install_combine_path(char *result, size_t size, const char *base, const cha
     }
 }
 
+/* Copy every regular file at staging root to dst_root; subdirs and volume labels skipped. */
+int install_copy_staging_root_files(const char *staging, const char *dst_root) {
+    DIR dir;
+    FILINFO fno;
+    char src_full[256];
+    char dst_full[256];
+    int res = f_opendir(&dir, staging);
+    if (res != FR_OK)
+        return res;
+
+    while (1) {
+        res = f_readdir(&dir, &fno);
+        if (res != FR_OK || fno.fname[0] == 0)
+            break;
+        if (fno.fname[0] == '.' && (fno.fname[1] == '\0' || (fno.fname[1] == '.' && fno.fname[2] == '\0')))
+            continue;
+        if (fno.fattrib & (AM_DIR | AM_VOL))
+            continue;
+
+        install_combine_path(src_full, sizeof(src_full), staging, fno.fname);
+        install_combine_path(dst_full, sizeof(dst_full), dst_root, fno.fname);
+        res = file_copy(src_full, dst_full);
+        if (res != FR_OK) {
+            f_closedir(&dir);
+            return res;
+        }
+    }
+
+    f_closedir(&dir);
+    return FR_OK;
+}
+
 // Recursive folder copy with progress tracking
 static int folder_copy_progress_recursive(const char *src, const char *dst, int *copied, int total, u32 start_x, u32 start_y, const char *display_name, int *last_percent) {
     DIR dir;
@@ -586,34 +619,58 @@ int delete_path_list(const char* paths[], const char* description) {
     return (failed == 0) ? FR_OK : FR_DISK_ERR;
 }
 
+#define HEKATE_8GB_SRC  "sd:/bootloader/hekate_8gb.bin"
+#define PAYLOAD_BIN_DST "sd:/payload.bin"
+#define UPDATE_BIN_DST  "sd:/bootloader/update.bin"
+
+static void unlink_ignore_err(const char *path)
+{
+    FILINFO fno;
+    if (f_stat(path, &fno) != FR_OK)
+        return;
+    if (fno.fattrib & AM_RDO)
+        f_chmod(path, fno.fattrib & ~AM_RDO, AM_RDO);
+    f_unlink(path);
+}
+
+/* After pack copy: if >4 GiB fuse RAM, install 8GB Hekate to payload.bin + bootloader/update.bin; always remove hekate_8gb.bin when done or if not used. */
+static void install_hekate_8gb_post_copy(void)
+{
+    if (!install_path_exists(HEKATE_8GB_SRC))
+        return;
+
+    int mib = dram_capacity_mib_from_fuse();
+    if (mib > 4096) {
+        install_set_color(COLOR_CYAN);
+        gfx_printf("\nMehr als 4 GB RAM erkannt (Fuse). Die 8-GB-Hekate-Variante wird verwendet.\n");
+        gfx_printf("Kopiere nach payload.bin und bootloader/update.bin...\n");
+        install_set_color(COLOR_WHITE);
+
+        int r1 = file_copy(HEKATE_8GB_SRC, PAYLOAD_BIN_DST);
+        int r2 = file_copy(HEKATE_8GB_SRC, UPDATE_BIN_DST);
+        if (r1 == FR_OK && r2 == FR_OK) {
+            install_set_color(COLOR_GREEN);
+            gfx_printf("  [OK] Hekate 8 GB installiert.\n");
+            install_set_color(COLOR_WHITE);
+            unlink_ignore_err(HEKATE_8GB_SRC);
+        } else {
+            install_set_color(COLOR_ORANGE);
+            gfx_printf("  [WARN] Kopie fehlgeschlagen (payload: %d, update: %d). hekate_8gb.bin bleibt.\n", r1, r2);
+            install_set_color(COLOR_WHITE);
+        }
+    } else {
+        unlink_ignore_err(HEKATE_8GB_SRC);
+    }
+}
+
 // Main installation function
 int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
     int res;
     
     if (mode == INSTALL_MODE_UPDATE) {
-        // Update mode: backup, selective cleanup, then install
+        // Update mode: selective cleanup then install
-        omninx_status_t status = detect_omninx_installation();
-        const char *version = (status.version_file[0] != '\0') ? status.version_file : "unknown";
-
         install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 1: Backup vor Update (%s)...\n", version);
+        gfx_printf("Schritt 1: Bereinigung...\n");
-        install_set_color(COLOR_WHITE);
-        res = backup_before_update(version);
-        /* Backup is best-effort; continue install even on failure */
-        if (res == FR_OK) {
-        install_set_color(COLOR_GREEN);
-        gfx_printf("  [OK] Sicherung nach sd:/backup/OmniNX/%s/\n", version);
-        install_set_color(COLOR_WHITE);
-        } else {
-            install_set_color(COLOR_ORANGE);
-            gfx_printf("  [WARN] Backup fehlgeschlagen, fahre trotzdem fort...\n");
-            install_set_color(COLOR_WHITE);
-        }
-
-        install_check_and_clear_screen_if_needed();
-        gfx_printf("\n");
-        install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 2: Bereinigung...\n");
         install_set_color(COLOR_WHITE);
         res = update_mode_cleanup(pack_variant);
         if (res != FR_OK) return res;
@@ -621,11 +678,13 @@ int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
         install_check_and_clear_screen_if_needed();
         gfx_printf("\n");
         install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 3: Dateien kopieren...\n");
+        gfx_printf("Schritt 2: Dateien kopieren...\n");
         install_set_color(COLOR_WHITE);
         res = update_mode_install(pack_variant);
         if (res != FR_OK) return res;
 
+        install_hekate_8gb_post_copy();
+
         install_check_and_clear_screen_if_needed();
         // Remove staging directory (installed pack)
         res = cleanup_staging_directory(pack_variant);
@@ -634,7 +693,7 @@ int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
         res = cleanup_other_staging_directories(pack_variant);
         return res;
     } else {
-        // Clean mode: backup user data, backup pre-omninx, wipe, restore, install
+        // Clean mode: backup, wipe, restore, install
         install_set_color(COLOR_YELLOW);
         gfx_printf("Schritt 1: Sichere Benutzerdaten...\n");
         install_set_color(COLOR_WHITE);
@@ -644,23 +703,7 @@ int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
         install_check_and_clear_screen_if_needed();
         gfx_printf("\n");
         install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 2: Backup alter CFW-Dateien (pre-omninx)...\n");
+        gfx_printf("Schritt 2: Bereinige alte Installation...\n");
-        install_set_color(COLOR_WHITE);
-        res = backup_before_clean();
-        if (res == FR_OK) {
-            install_set_color(COLOR_GREEN);
-            gfx_printf("  [OK] Sicherung nach sd:/backup/OmniNX/pre-omninx/\n");
-            install_set_color(COLOR_WHITE);
-        } else {
-            install_set_color(COLOR_ORANGE);
-            gfx_printf("  [WARN] Backup fehlgeschlagen, fahre trotzdem fort...\n");
-            install_set_color(COLOR_WHITE);
-        }
-        
-        install_check_and_clear_screen_if_needed();
-        gfx_printf("\n");
-        install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 3: Bereinige alte Installation...\n");
         install_set_color(COLOR_WHITE);
         res = clean_mode_wipe();
         if (res != FR_OK) return res;
@@ -668,7 +711,7 @@ int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
         install_check_and_clear_screen_if_needed();
         gfx_printf("\n");
         install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 4: Stelle Benutzerdaten wieder her...\n");
+        gfx_printf("Schritt 3: Stelle Benutzerdaten wieder her...\n");
         install_set_color(COLOR_WHITE);
         res = clean_mode_restore();
         if (res != FR_OK) return res;
@@ -676,11 +719,13 @@ int perform_installation(omninx_variant_t pack_variant, install_mode_t mode) {
         install_check_and_clear_screen_if_needed();
         gfx_printf("\n");
         install_set_color(COLOR_YELLOW);
-        gfx_printf("Schritt 5: Dateien kopieren...\n");
+        gfx_printf("Schritt 4: Dateien kopieren...\n");
         install_set_color(COLOR_WHITE);
         res = clean_mode_install(pack_variant);
         if (res != FR_OK) return res;
 
+        install_hekate_8gb_post_copy();
+
         install_check_and_clear_screen_if_needed();
         // Remove staging directory (installed pack)
         res = cleanup_staging_directory(pack_variant);

source/install.h

@@ -17,7 +17,6 @@ typedef enum {
 int perform_installation(omninx_variant_t pack_variant, install_mode_t mode);
 
 // Update mode operations (install_update.c)
-int backup_before_update(const char *version);
 int update_mode_cleanup(omninx_variant_t variant);
 int update_mode_install(omninx_variant_t variant);
 int cleanup_staging_directory(omninx_variant_t pack_variant);
@@ -25,7 +24,6 @@ int cleanup_staging_directory(omninx_variant_t pack_variant);
 int cleanup_other_staging_directories(omninx_variant_t installed_variant);
 
 // Clean install operations (install_clean.c)
-int backup_before_clean(void);
 int clean_mode_backup(void);
 int clean_mode_wipe(void);
 int clean_mode_restore(void);
@@ -37,6 +35,7 @@ void install_check_and_clear_screen_if_needed(void);
 bool install_path_exists(const char *path);
 int install_count_directory_items(const char *path);
 void install_combine_path(char *result, size_t size, const char *base, const char *add);
+int install_copy_staging_root_files(const char *staging, const char *dst_root);
 int delete_path_list(const char* paths[], const char* description);
 int delete_path_lists_grouped(const char *folder_display_name, ...);
 int folder_delete_single_with_progress(const char *path, const char *display_name);

source/install_clean.c

@@ -11,7 +11,6 @@
 #include "gfx.h"
 #include "version.h"
 #include <libs/fatfs/ff.h>
-#include <utils/sprintf.h>
 #include <string.h>
 
 #undef COLOR_CYAN
@@ -32,26 +31,6 @@
 #define path_exists install_path_exists
 #define count_directory_items install_count_directory_items
 
-// Backup paths before clean install (sd:/backup/OmniNX/pre-omninx)
-int backup_before_clean(void) {
-    char backup_base[270];
-    s_printf(backup_base, "%s/%s", BACKUP_BASE_PATH, PRE_OMNINX_LABEL);
-    return backup_deletion_lists(backup_base,
-        clean_atmosphere_dirs_to_delete,
-        clean_atmosphere_contents_dirs_to_delete,
-        clean_atmosphere_files_to_delete,
-        clean_bootloader_dirs_to_delete,
-        clean_bootloader_files_to_delete,
-        clean_config_dirs_to_delete,
-        clean_switch_dirs_to_delete,
-        clean_switch_files_to_delete,
-        clean_root_files_to_delete,
-        clean_misc_dirs_to_delete,
-        clean_misc_files_to_delete,
-        old_version_files_to_delete,
-        NULL);
-}
-
 // Clean mode: Backup user data
 int clean_mode_backup(void) {
     set_color(COLOR_CYAN);

source/install_update.c

@@ -4,7 +4,6 @@
  */
 
 #include "install.h"
-#include "backup.h"
 #include "deletion_lists_update.h"
 #include "fs.h"
 #include "version.h"
@@ -35,25 +34,6 @@
 #define path_exists install_path_exists
 #define count_directory_items install_count_directory_items
 
-// Backup paths before update (sd:/backup/OmniNX/{version})
-int backup_before_update(const char *version) {
-    char backup_base[270];
-    s_printf(backup_base, "%s/%s", BACKUP_BASE_PATH, version);
-    return backup_deletion_lists(backup_base,
-        atmosphere_dirs_to_delete,
-        atmosphere_contents_dirs_to_delete,
-        atmosphere_files_to_delete,
-        bootloader_dirs_to_delete,
-        bootloader_files_to_delete,
-        config_dirs_to_delete,
-        switch_dirs_to_delete,
-        switch_files_to_delete,
-        root_files_to_delete,
-        misc_dirs_to_delete,
-        misc_files_to_delete,
-        NULL);
-}
-
 // Update mode: Cleanup specific directories/files
 int update_mode_cleanup(omninx_variant_t variant) {
     (void)variant;
@@ -98,7 +78,6 @@ int update_mode_install(omninx_variant_t variant) {
     int res;
     const char* staging = get_staging_path(variant);
     char src_path[256];
-    char dst_path[256];
 
     if (!staging) {
         return FR_INVALID_PARAMETER;
@@ -126,6 +105,10 @@ int update_mode_install(omninx_variant_t variant) {
     res = folder_copy_with_progress_v2(src_path, "sd:/", "switch/");
     if (res != FR_OK && res != FR_NO_FILE) return res;
 
+    s_printf(src_path, "%s/themes", staging);
+    res = folder_copy_with_progress_v2(src_path, "sd:/", "themes/");
+    if (res != FR_OK && res != FR_NO_FILE) return res;
+
     s_printf(src_path, "%s/warmboot_mariko", staging);
     res = folder_copy_with_progress_v2(src_path, "sd:/", "warmboot_mariko/");
     if (res != FR_OK && res != FR_NO_FILE) return res;
@@ -140,29 +123,9 @@ int update_mode_install(omninx_variant_t variant) {
     gfx_printf("  Kopiere Root-Dateien...\n");
     set_color(COLOR_WHITE);
 
-    s_printf(src_path, "%s/boot.dat", staging);
+    res = install_copy_staging_root_files(staging, "sd:/");
-    s_printf(dst_path, "sd:/boot.dat");
+    if (res != FR_OK)
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
+        return res;
-
-    s_printf(src_path, "%s/boot.ini", staging);
-    s_printf(dst_path, "sd:/boot.ini");
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
-
-    s_printf(src_path, "%s/exosphere.ini", staging);
-    s_printf(dst_path, "sd:/exosphere.ini");
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
-
-    s_printf(src_path, "%s/hbmenu.nro", staging);
-    s_printf(dst_path, "sd:/hbmenu.nro");
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
-
-    s_printf(src_path, "%s/loader.bin", staging);
-    s_printf(dst_path, "sd:/loader.bin");
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
-
-    s_printf(src_path, "%s/payload.bin", staging);
-    s_printf(dst_path, "sd:/payload.bin");
-    if (path_exists(src_path)) file_copy(src_path, dst_path);
 
     set_color(COLOR_GREEN);
     gfx_printf("  Kopie abgeschlossen!\n");

source/main.c

@@ -35,6 +35,7 @@
 #include "fs.h"
 #include "version.h"
 #include "install.h"
+#include "screenshot.h"
 
 // Configuration
 #define PAYLOAD_PATH      "sd:/bootloader/update.bin"
@@ -264,12 +265,16 @@ void ipl_main(void) {
                 break;
             }
             
-            // Check joycon A button
+            // Check joycon A button; Capture = screenshot
             jc_gamepad_rpt_t *jc = joycon_poll();
-            if (jc && jc->a) {
+            if (jc) {
+                if (jc->cap)
+                    take_screenshot();
+                if (jc->a) {
                     button_pressed = true;
                     break;
                 }
+            }
             
             msleep(50); // Small delay to avoid busy-waiting
         }
@@ -345,6 +350,9 @@ void ipl_main(void) {
             jc_gamepad_rpt_t *jc = joycon_poll();
             u8 btn = btn_read();
             
+            if (jc && jc->cap)
+                take_screenshot();
+            
             // D-pad or Vol+ / Vol- for selection (Vol+ = up, Vol- = down)
             bool cur_up = false, cur_down = false;
             if (jc) {
@@ -402,10 +410,14 @@ void ipl_main(void) {
         bool user_cancelled = false;
         while (batt_pct < BATT_LOW_THRESHOLD && !bq24193_charger_connected() && !user_cancelled) {
             jc_gamepad_rpt_t *jc = joycon_poll();
-            if (jc && jc->plus && jc->minus) {
+            if (jc) {
+                if (jc->cap)
+                    take_screenshot();
+                if (jc->plus && jc->minus) {
                     user_cancelled = true;
                     break;
                 }
+            }
             if (max17050_get_property(MAX17050_RepSOC, &batt_raw) == 0) {
                 batt_pct = batt_raw >> 8;
             }
@@ -428,6 +440,67 @@ void ipl_main(void) {
     gfx_con_setpos(0, 0);
     print_header();
     
+    // UHS class check: recommend U2 / V30 / A2 for emuMMC (speed and reliability)
+    #define UHS_U2_MIN  2
+    #define UHS_V30_MIN 30
+    #define UHS_A2_MIN  2
+    bool uhs_ok = (sd_storage.ssr.uhs_grade >= UHS_U2_MIN &&
+                   sd_storage.ssr.video_class >= UHS_V30_MIN &&
+                   sd_storage.ssr.app_class >= UHS_A2_MIN);
+    if (!uhs_ok) {
+        jc_init_hw();
+        gfx_clear_grey(0x1B);
+        gfx_con_setpos(0, 0);
+        set_color(COLOR_RED);
+        gfx_printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
+        gfx_printf("!!          WARNUNG - SD-KARTEN-KLASSE           !!\n");
+        gfx_printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n\n");
+        set_color(COLOR_WHITE);
+        gfx_printf("Diese SD-Karte erfuellt NICHT die empfohlenen\n");
+        gfx_printf("Mindestanforderungen (U2 | V30 | A2).\n\n");
+        set_color(COLOR_YELLOW);
+        gfx_printf("Aktuelle Werte: UHS%d | V%d | A%d\n\n",
+            (u32)sd_storage.ssr.uhs_grade,
+            (u32)sd_storage.ssr.video_class,
+            (u32)sd_storage.ssr.app_class);
+        set_color(COLOR_WHITE);
+        gfx_printf("Moegliche Folgen bei schwachen Karten:\n");
+        gfx_printf("  - Langsamere emuMMC / Spiel-Ladezeiten\n");
+        gfx_printf("  - Hoheres Risiko von Korruption oder Abstuerzen\n");
+        gfx_printf("  - Instabilitaet beim Schreiben groesserer Daten\n\n");
+        set_color(COLOR_CYAN);
+        gfx_printf("Empfohlen: U2 | V30 | A2 oder besser.\n");
+        gfx_printf("Empfohlene Karten: Samsung EVO Plus, EVO Select und PRO Plus.\n\n");
+        set_color(COLOR_GREEN);
+        gfx_printf("Druecke A (oder Power), um trotzdem fortzufahren.\n");
+        set_color(COLOR_WHITE);
+        while (btn_read() & BTN_POWER) { msleep(50); }
+        bool acknowledged = false;
+        while (!acknowledged) {
+            u8 btn_state = btn_read();
+            if (btn_state & BTN_POWER) acknowledged = true;
+            jc_gamepad_rpt_t *jc = joycon_poll();
+            if (jc) {
+                if (jc->cap)
+                    take_screenshot();
+                if (jc->a) acknowledged = true;
+            }
+            msleep(50);
+        }
+        // Wait for A and Power to be released so the same press doesn't start the install
+        while (btn_read() & BTN_POWER) { msleep(50); }
+        bool released = false;
+        while (!released) {
+            jc_gamepad_rpt_t *jc = joycon_poll();
+            released = (!jc || !jc->a) && !(btn_read() & BTN_POWER);
+            if (!released) msleep(50);
+        }
+        msleep(300);  // Short delay so the next screen is visible before accepting input
+        gfx_clear_grey(0x1B);
+        gfx_con_setpos(0, 0);
+        print_header();
+    }
+    
     // Show information
     set_color(COLOR_CYAN);
     gfx_printf("Installationsmodus: %s\n", mode == INSTALL_MODE_UPDATE ? "Update" : "Saubere Installation");
@@ -473,9 +546,11 @@ void ipl_main(void) {
             break;
         }
         
-        // Check joycon buttons
+        // Check joycon buttons; Capture = screenshot
         jc_gamepad_rpt_t *jc = joycon_poll();
         if (jc) {
+            if (jc->cap)
+                take_screenshot();
             if (jc->a) {
                 button_pressed = true;
                 break;
@@ -521,6 +596,7 @@ void ipl_main(void) {
     
     // Wait 3 seconds before clearing screen to allow errors to be visible
     msleep(3000);
+    // take_screenshot(); // Take a screenshot of the installation summary
 
     // Clear screen for final summary to ensure it's visible
     gfx_clear_grey(0x1B);
@@ -573,12 +649,16 @@ void ipl_main(void) {
             break;
         }
         
-        // Check joycon A button
+        // Check joycon A button; Capture = screenshot
         jc_gamepad_rpt_t *jc = joycon_poll();
-        if (jc && jc->a) {
+        if (jc) {
+            if (jc->cap)
+                take_screenshot();
+            if (jc->a) {
                 button_pressed = true;
                 break;
             }
+        }
         
         msleep(50); // Small delay to avoid busy-waiting
     }
@@ -615,10 +695,14 @@ void ipl_main(void) {
             }
             
             jc_gamepad_rpt_t *jc = joycon_poll();
-            if (jc && jc->a) {
+            if (jc) {
+                if (jc->cap)
+                    take_screenshot();
+                if (jc->a) {
                     button_pressed = true;
                     break;
                 }
+            }
             
             msleep(50);
         }

source/nx_sd.c

@@ -184,6 +184,11 @@ static void _sd_deinit()
 void sd_unmount() { _sd_deinit(); }
 void sd_end()     { _sd_deinit(); }
 
+bool sd_get_card_mounted(void)
+{
+	return sd_mounted;
+}
+
 void *sd_file_read(const char *path, u32 *fsize)
 {
 	FIL fp;

source/screenshot.c

@@ -0,0 +1,111 @@
+/*
+ * Screenshot support for OmniNX Installer Payload
+ * Based on TegraExplorer (AllgemeinerProblemLoeser) TakeScreenshot implementation.
+ */
+
+#include "screenshot.h"
+#include "gfx.h"
+#include "nx_sd.h"
+#include <libs/fatfs/ff.h>
+#include <mem/heap.h>
+#include <display/di.h>
+#include <utils/util.h>
+#include <utils/sprintf.h>
+#include <rtc/max77620-rtc.h>
+#include <string.h>
+
+/* BMP file header (54 bytes), matching TegraExplorer tools.h */
+typedef struct __attribute__((packed)) _bmp_hdr_t
+{
+	u16 magic;
+	u32 size;
+	u32 rsvd;
+	u32 data_off;
+	u32 hdr_size;
+	u32 width;
+	u32 height;
+	u16 planes;
+	u16 pxl_bits;
+	u32 comp;
+	u32 img_size;
+	u32 res_h;
+	u32 res_v;
+	u64 rsvd2;
+} bmp_hdr_t;
+
+#define BMP_HEADER_SIZE  0x36
+#define FB_SIZE          0x384000   /* 1280 * 720 * 4 */
+#define SCREEN_W         1280
+#define SCREEN_H         720
+
+void take_screenshot(void)
+{
+	static u32 last_timer = 0;
+
+	if (!sd_get_card_mounted())
+		return;
+
+	/* 3-second cooldown (same as TegraExplorer) */
+	u32 now = get_tmr_s();
+	if (last_timer != 0 && now < last_timer + 3)
+		return;
+	last_timer = now;
+
+	const char basepath[] = "sd:/switch/screenshot";
+	char name[48];
+	char path[80];
+	rtc_time_t rtc;
+
+	max77620_rtc_get_time(&rtc);
+	s_printf(name, "omninx_installer_%04d%02d%02d_%02d%02d%02d.bmp",
+		(u32)rtc.year, (u32)rtc.month, (u32)rtc.day,
+		(u32)rtc.hour, (u32)rtc.min, (u32)rtc.sec);
+	s_printf(path, "%s/%s", basepath, name);
+
+	f_mkdir("sd:/switch");
+	f_mkdir(basepath);
+
+	const u32 file_size = BMP_HEADER_SIZE + FB_SIZE;
+	u8 *bitmap = (u8 *)malloc(file_size);
+	u32 *fb_copy = (u32 *)malloc(FB_SIZE);
+	if (!bitmap || !fb_copy) {
+		if (bitmap) free(bitmap);
+		if (fb_copy) free(fb_copy);
+		return;
+	}
+
+	/* Copy framebuffer with same coordinate flip as TegraExplorer (BGR layout) */
+	u32 *fb_ptr = gfx_ctxt.fb;
+	for (int x = SCREEN_W - 1; x >= 0; x--) {
+		for (int y = SCREEN_H - 1; y >= 0; y--)
+			fb_copy[y * SCREEN_W + x] = *fb_ptr++;
+	}
+
+	memcpy(bitmap + BMP_HEADER_SIZE, fb_copy, FB_SIZE);
+
+	bmp_hdr_t *bmp = (bmp_hdr_t *)bitmap;
+	bmp->magic    = 0x4D42;
+	bmp->size     = file_size;
+	bmp->rsvd     = 0;
+	bmp->data_off = BMP_HEADER_SIZE;
+	bmp->hdr_size = 40;
+	bmp->width    = SCREEN_W;
+	bmp->height   = SCREEN_H;
+	bmp->planes   = 1;
+	bmp->pxl_bits = 32;
+	bmp->comp     = 0;
+	bmp->img_size = FB_SIZE;
+	bmp->res_h    = 2834;
+	bmp->res_v    = 2834;
+	bmp->rsvd2    = 0;
+
+	sd_save_to_file(bitmap, file_size, path);
+
+	free(bitmap);
+	free(fb_copy);
+
+	/* Brief backlight flash (same as TegraExplorer) */
+	display_backlight_brightness(255, 1000);
+	msleep(100);
+	display_backlight_brightness(100, 1000);
+}

source/screenshot.h

@@ -0,0 +1,13 @@
+/*
+ * Screenshot support for OmniNX Installer Payload
+ * Based on TegraExplorer (AllgemeinerProblemLoeser) TakeScreenshot implementation.
+ */
+
+#pragma once
+
+#include <utils/types.h>
+
+/* Take a screenshot of the current framebuffer and save as BMP to SD.
+ * Triggered by Capture button (jc->cap). Uses 3-second cooldown.
+ * Saves to sd:/switch/screenshot/omninx_installer_YYYYMMDD_HHMMSS.bmp */
+void take_screenshot(void);

tools/ram_test_main.c

@@ -0,0 +1,70 @@
+/*
+ * Minimal RAM info test payload (fuse DRAM ID + SK table -> MiB).
+ * Build: make ram-test  ->  output/RAM-Test.bin
+ */
+
+#include <display/di.h>
+#include <mem/heap.h>
+#include <mem/minerva.h>
+#include <memory_map.h>
+#include <soc/bpmp.h>
+#include <soc/fuse.h>
+#include <soc/hw_init.h>
+#include <soc/t210.h>
+#include <utils/util.h>
+
+#include "dram_fuse.h"
+#include "gfx.h"
+
+#undef COLOR_CYAN
+#undef COLOR_WHITE
+#define COLOR_CYAN   0xFF00FFFF
+#define COLOR_WHITE  0xFFFFFFFF
+
+/* Required by BDK */
+boot_cfg_t __attribute__((section("._boot_cfg"))) b_cfg;
+volatile nyx_storage_t *nyx_str = (nyx_storage_t *)NYX_STORAGE_ADDR;
+
+extern void pivot_stack(u32 stack_top);
+
+void ipl_main(void)
+{
+	hw_init();
+	pivot_stack(IPL_STACK_TOP);
+	heap_init(IPL_HEAP_START);
+
+	minerva_init();
+	minerva_change_freq(FREQ_800);
+
+	display_init();
+	u32 *fb = display_init_framebuffer_pitch();
+	gfx_init_ctxt(fb, 720, 1280, 720);
+	gfx_con_init();
+	display_backlight_pwm_init();
+	display_backlight_brightness(100, 1000);
+
+	bpmp_clk_rate_set(BPMP_CLK_DEFAULT_BOOST);
+
+	gfx_clear_grey(0x1B);
+	gfx_con_setpos(0, 0);
+	gfx_con_setcol(COLOR_CYAN, gfx_con.fillbg, gfx_con.bgcol);
+	gfx_printf("RAM test payload\n\n");
+	gfx_con_setcol(COLOR_WHITE, gfx_con.fillbg, gfx_con.bgcol);
+
+	u32 raw = fuse_read_dramid(true);
+	u32 nid = fuse_read_dramid(false);
+	u32 chip = hw_get_chip_id();
+	int mib = dram_capacity_mib_from_fuse();
+
+	gfx_printf("SoC:       %s\n", chip == GP_HIDREV_MAJOR_T210B01 ? "Mariko (T210B01)" : "Erista (T210)");
+	gfx_printf("DRAM fuse: raw %d  norm %d\n", raw, nid);
+	if (mib > 0)
+		gfx_printf("Table MiB: %d (fuse SKU, not probe)\n", mib);
+	else
+		gfx_printf("Table MiB: (unknown id for this SoC)\n");
+
+	gfx_printf("\nHang — power off or inject payload.\n");
+
+	while (1)
+		msleep(500);
+}