diff --git a/Makefile b/Makefile
index 4fee11d..0bd17b5 100644
--- a/Makefile
+++ b/Makefile
@@ -91,6 +91,7 @@ C_SOURCES := \
     clks/kernel/ramdisk.c \
     clks/kernel/fs.c \
     clks/kernel/userland.c \
+    clks/kernel/driver.c \
     clks/lib/string.c \
     clks/drivers/serial/serial.c \
     clks/drivers/video/framebuffer.c \
@@ -112,8 +113,9 @@ USER_COMMON_OBJECTS := $(patsubst %.c,$(USER_OBJ_ROOT)/%.o,$(USER_COMMON_SOURCES
 USER_SHELL_OBJECT := $(USER_OBJ_ROOT)/cleonos/c/apps/shell_main.o
 USER_ELFRUNNER_OBJECT := $(USER_OBJ_ROOT)/cleonos/c/apps/elfrunner_main.o
 USER_MEMC_OBJECT := $(USER_OBJ_ROOT)/cleonos/c/apps/memc_main.o
+USER_TTYDRV_OBJECT := $(USER_OBJ_ROOT)/cleonos/c/apps/ttydrv_main.o
 USER_RUST_LIB := $(USER_LIB_DIR)/libcleonos_user_rust.a
-USER_APPS := $(USER_APP_DIR)/shell.elf $(USER_APP_DIR)/elfrunner.elf $(USER_APP_DIR)/memc.elf
+USER_APPS := $(USER_APP_DIR)/shell.elf $(USER_APP_DIR)/elfrunner.elf $(USER_APP_DIR)/memc.elf $(USER_APP_DIR)/ttydrv.elf
 
 CFLAGS_COMMON := -std=c11 -ffreestanding -fno-stack-protector -fno-builtin -Wall -Wextra -Werror -Iclks/include
 ASFLAGS_COMMON := -ffreestanding -Iclks/include
@@ -202,10 +204,11 @@ ramdisk-root: userapps
 > @rm -rf $(RAMDISK_ROOT)
 > @mkdir -p $(RAMDISK_ROOT)
 > @cp -a ramdisk/. $(RAMDISK_ROOT)/
-> @mkdir -p $(RAMDISK_ROOT)/system $(RAMDISK_ROOT)/shell
+> @mkdir -p $(RAMDISK_ROOT)/system $(RAMDISK_ROOT)/shell $(RAMDISK_ROOT)/driver
 > @cp $(USER_APP_DIR)/shell.elf $(RAMDISK_ROOT)/shell/shell.elf
 > @cp $(USER_APP_DIR)/elfrunner.elf $(RAMDISK_ROOT)/system/elfrunner.elf
 > @cp $(USER_APP_DIR)/memc.elf $(RAMDISK_ROOT)/system/memc.elf
+> @cp $(USER_APP_DIR)/ttydrv.elf $(RAMDISK_ROOT)/driver/ttydrv.elf
 
 ramdisk: $(RAMDISK_IMAGE)
 
@@ -249,6 +252,11 @@ $(USER_APP_DIR)/memc.elf: $(USER_COMMON_OBJECTS) $(USER_MEMC_OBJECT) $(USER_LINK
 > @mkdir -p $(dir $@)
 > @$(USER_LD) $(USER_LDFLAGS) -o $@ $(USER_COMMON_OBJECTS) $(USER_MEMC_OBJECT)
 
+$(USER_APP_DIR)/ttydrv.elf: $(USER_COMMON_OBJECTS) $(USER_TTYDRV_OBJECT) $(USER_LINKER_SCRIPT)
+> $(call log_step,linking user ttydrv.elf)
+> @mkdir -p $(dir $@)
+> @$(USER_LD) $(USER_LDFLAGS) -o $@ $(USER_COMMON_OBJECTS) $(USER_TTYDRV_OBJECT)
+
 $(RAMDISK_IMAGE): ramdisk-root Makefile
 > $(call log_step,packing ramdisk -> $(RAMDISK_IMAGE))
 > @mkdir -p $(dir $@)
diff --git a/cleonos/c/apps/ttydrv_main.c b/cleonos/c/apps/ttydrv_main.c
new file mode 100644
index 0000000..7b20411
--- /dev/null
+++ b/cleonos/c/apps/ttydrv_main.c
@@ -0,0 +1,8 @@
+#include <cleonos_syscall.h>
+
+static const char ttydrv_banner[] = "[DRIVER][TTYDRV] ttydrv.elf online";
+
+int cleonos_app_main(void) {
+    cleonos_sys_log_write(ttydrv_banner, (u64)(sizeof(ttydrv_banner) - 1U));
+    return 0;
+}
diff --git a/clks/include/clks/driver.h b/clks/include/clks/driver.h
new file mode 100644
index 0000000..8705ce0
--- /dev/null
+++ b/clks/include/clks/driver.h
@@ -0,0 +1,35 @@
+#ifndef CLKS_DRIVER_H
+#define CLKS_DRIVER_H
+
+#include <clks/types.h>
+
+#define CLKS_DRIVER_NAME_MAX 32U
+
+enum clks_driver_kind {
+    CLKS_DRIVER_KIND_BUILTIN_CHAR = 1,
+    CLKS_DRIVER_KIND_BUILTIN_VIDEO = 2,
+    CLKS_DRIVER_KIND_BUILTIN_TTY = 3,
+    CLKS_DRIVER_KIND_ELF = 4,
+};
+
+enum clks_driver_state {
+    CLKS_DRIVER_STATE_OFFLINE = 0,
+    CLKS_DRIVER_STATE_READY = 1,
+    CLKS_DRIVER_STATE_FAILED = 2,
+};
+
+struct clks_driver_info {
+    char name[CLKS_DRIVER_NAME_MAX];
+    enum clks_driver_kind kind;
+    enum clks_driver_state state;
+    clks_bool from_elf;
+    u64 image_size;
+    u64 elf_entry;
+};
+
+void clks_driver_init(void);
+u64 clks_driver_count(void);
+u64 clks_driver_elf_count(void);
+clks_bool clks_driver_get(u64 index, struct clks_driver_info *out_info);
+
+#endif
diff --git a/clks/kernel/driver.c b/clks/kernel/driver.c
new file mode 100644
index 0000000..815fc14
--- /dev/null
+++ b/clks/kernel/driver.c
@@ -0,0 +1,210 @@
+#include <clks/driver.h>
+#include <clks/elf64.h>
+#include <clks/framebuffer.h>
+#include <clks/fs.h>
+#include <clks/log.h>
+#include <clks/string.h>
+#include <clks/types.h>
+
+#define CLKS_DRIVER_MAX 32U
+#define CLKS_DRIVER_CHILD_NAME_MAX 96U
+#define CLKS_DRIVER_PATH_MAX 224U
+
+static struct clks_driver_info clks_driver_table[CLKS_DRIVER_MAX];
+static u64 clks_driver_table_count = 0ULL;
+static u64 clks_driver_table_elf_count = 0ULL;
+
+static void clks_driver_copy_name(char *dst, usize dst_size, const char *src) {
+    usize i = 0U;
+
+    if (dst == CLKS_NULL || dst_size == 0U) {
+        return;
+    }
+
+    if (src == CLKS_NULL) {
+        dst[0] = '\0';
+        return;
+    }
+
+    while (i + 1U < dst_size && src[i] != '\0') {
+        dst[i] = src[i];
+        i++;
+    }
+
+    dst[i] = '\0';
+}
+
+static clks_bool clks_driver_has_elf_suffix(const char *name) {
+    usize len;
+
+    if (name == CLKS_NULL) {
+        return CLKS_FALSE;
+    }
+
+    len = clks_strlen(name);
+
+    if (len < 4U) {
+        return CLKS_FALSE;
+    }
+
+    return (name[len - 4U] == '.' &&
+            name[len - 3U] == 'e' &&
+            name[len - 2U] == 'l' &&
+            name[len - 1U] == 'f') ? CLKS_TRUE : CLKS_FALSE;
+}
+
+static clks_bool clks_driver_build_path(const char *child_name, char *out_path, usize out_size) {
+    static const char prefix[] = "/driver/";
+    usize prefix_len = sizeof(prefix) - 1U;
+    usize child_len;
+
+    if (child_name == CLKS_NULL || out_path == CLKS_NULL || out_size == 0U) {
+        return CLKS_FALSE;
+    }
+
+    child_len = clks_strlen(child_name);
+
+    if (prefix_len + child_len + 1U > out_size) {
+        return CLKS_FALSE;
+    }
+
+    clks_memcpy(out_path, prefix, prefix_len);
+    clks_memcpy(out_path + prefix_len, child_name, child_len);
+    out_path[prefix_len + child_len] = '\0';
+    return CLKS_TRUE;
+}
+
+static clks_bool clks_driver_push(const char *name,
+                                  enum clks_driver_kind kind,
+                                  enum clks_driver_state state,
+                                  clks_bool from_elf,
+                                  u64 image_size,
+                                  u64 elf_entry) {
+    struct clks_driver_info *slot;
+
+    if (clks_driver_table_count >= CLKS_DRIVER_MAX) {
+        return CLKS_FALSE;
+    }
+
+    slot = &clks_driver_table[clks_driver_table_count];
+    clks_memset(slot, 0, sizeof(*slot));
+
+    clks_driver_copy_name(slot->name, sizeof(slot->name), name);
+    slot->kind = kind;
+    slot->state = state;
+    slot->from_elf = from_elf;
+    slot->image_size = image_size;
+    slot->elf_entry = elf_entry;
+
+    clks_driver_table_count++;
+
+    if (from_elf == CLKS_TRUE) {
+        clks_driver_table_elf_count++;
+    }
+
+    return CLKS_TRUE;
+}
+
+static void clks_driver_register_builtins(void) {
+    clks_driver_push("serial", CLKS_DRIVER_KIND_BUILTIN_CHAR, CLKS_DRIVER_STATE_READY, CLKS_FALSE, 0ULL, 0ULL);
+
+    if (clks_fb_ready() == CLKS_TRUE) {
+        clks_driver_push("framebuffer", CLKS_DRIVER_KIND_BUILTIN_VIDEO, CLKS_DRIVER_STATE_READY, CLKS_FALSE, 0ULL, 0ULL);
+        clks_driver_push("tty", CLKS_DRIVER_KIND_BUILTIN_TTY, CLKS_DRIVER_STATE_READY, CLKS_FALSE, 0ULL, 0ULL);
+    } else {
+        clks_driver_push("framebuffer", CLKS_DRIVER_KIND_BUILTIN_VIDEO, CLKS_DRIVER_STATE_FAILED, CLKS_FALSE, 0ULL, 0ULL);
+        clks_driver_push("tty", CLKS_DRIVER_KIND_BUILTIN_TTY, CLKS_DRIVER_STATE_FAILED, CLKS_FALSE, 0ULL, 0ULL);
+    }
+}
+
+static void clks_driver_probe_driver_dir(void) {
+    u64 child_count;
+    u64 i;
+
+    if (clks_fs_is_ready() == CLKS_FALSE) {
+        clks_log(CLKS_LOG_ERROR, "DRV", "FS NOT READY FOR DRIVER PROBE");
+        return;
+    }
+
+    child_count = clks_fs_count_children("/driver");
+
+    for (i = 0ULL; i < child_count; i++) {
+        char child_name[CLKS_DRIVER_CHILD_NAME_MAX];
+        char full_path[CLKS_DRIVER_PATH_MAX];
+        const void *image;
+        u64 image_size = 0ULL;
+        struct clks_elf64_info info;
+
+        clks_memset(child_name, 0, sizeof(child_name));
+        clks_memset(full_path, 0, sizeof(full_path));
+
+        if (clks_fs_get_child_name("/driver", i, child_name, sizeof(child_name)) == CLKS_FALSE) {
+            continue;
+        }
+
+        if (clks_driver_has_elf_suffix(child_name) == CLKS_FALSE) {
+            continue;
+        }
+
+        if (clks_driver_build_path(child_name, full_path, sizeof(full_path)) == CLKS_FALSE) {
+            clks_driver_push(child_name, CLKS_DRIVER_KIND_ELF, CLKS_DRIVER_STATE_FAILED, CLKS_TRUE, 0ULL, 0ULL);
+            continue;
+        }
+
+        image = clks_fs_read_all(full_path, &image_size);
+
+        if (image == CLKS_NULL) {
+            clks_log(CLKS_LOG_ERROR, "DRV", "DRIVER ELF MISSING");
+            clks_log(CLKS_LOG_ERROR, "DRV", full_path);
+            clks_driver_push(child_name, CLKS_DRIVER_KIND_ELF, CLKS_DRIVER_STATE_FAILED, CLKS_TRUE, 0ULL, 0ULL);
+            continue;
+        }
+
+        if (clks_elf64_inspect(image, image_size, &info) == CLKS_FALSE) {
+            clks_log(CLKS_LOG_ERROR, "DRV", "DRIVER ELF INVALID");
+            clks_log(CLKS_LOG_ERROR, "DRV", full_path);
+            clks_driver_push(child_name, CLKS_DRIVER_KIND_ELF, CLKS_DRIVER_STATE_FAILED, CLKS_TRUE, image_size, 0ULL);
+            continue;
+        }
+
+        clks_log(CLKS_LOG_INFO, "DRV", "DRIVER ELF READY");
+        clks_log(CLKS_LOG_INFO, "DRV", full_path);
+        clks_log_hex(CLKS_LOG_INFO, "DRV", "ENTRY", info.entry);
+
+        clks_driver_push(child_name, CLKS_DRIVER_KIND_ELF, CLKS_DRIVER_STATE_READY, CLKS_TRUE, image_size, info.entry);
+    }
+}
+
+void clks_driver_init(void) {
+    clks_memset(clks_driver_table, 0, sizeof(clks_driver_table));
+    clks_driver_table_count = 0ULL;
+    clks_driver_table_elf_count = 0ULL;
+
+    clks_driver_register_builtins();
+    clks_driver_probe_driver_dir();
+
+    clks_log(CLKS_LOG_INFO, "DRV", "DRIVER MANAGER ONLINE");
+    clks_log_hex(CLKS_LOG_INFO, "DRV", "REGISTERED", clks_driver_table_count);
+    clks_log_hex(CLKS_LOG_INFO, "DRV", "ELF_DRIVERS", clks_driver_table_elf_count);
+}
+
+u64 clks_driver_count(void) {
+    return clks_driver_table_count;
+}
+
+u64 clks_driver_elf_count(void) {
+    return clks_driver_table_elf_count;
+}
+
+clks_bool clks_driver_get(u64 index, struct clks_driver_info *out_info) {
+    if (out_info == CLKS_NULL) {
+        return CLKS_FALSE;
+    }
+
+    if (index >= clks_driver_table_count) {
+        return CLKS_FALSE;
+    }
+
+    *out_info = clks_driver_table[index];
+    return CLKS_TRUE;
+}
diff --git a/clks/kernel/kmain.c b/clks/kernel/kmain.c
index 9d7d949..57cf606 100644
--- a/clks/kernel/kmain.c
+++ b/clks/kernel/kmain.c
@@ -1,5 +1,6 @@
 #include <clks/boot.h>
 #include <clks/cpu.h>
+#include <clks/driver.h>
 #include <clks/elfrunner.h>
 #include <clks/framebuffer.h>
 #include <clks/fs.h>
@@ -40,7 +41,7 @@ void clks_kernel_main(void) {
         clks_tty_init();
     }
 
-    clks_log(CLKS_LOG_INFO, "BOOT", "CLEONOS STAGE7 START");
+    clks_log(CLKS_LOG_INFO, "BOOT", "CLEONOS STAGE8 START");
 
     if (boot_fb == CLKS_NULL) {
         clks_log(CLKS_LOG_WARN, "VIDEO", "NO FRAMEBUFFER FROM LIMINE");
@@ -107,6 +108,8 @@ void clks_kernel_main(void) {
         clks_cpu_halt_forever();
     }
 
+    clks_driver_init();
+
     clks_scheduler_init();
 
     if (clks_scheduler_add_kernel_task("klogd", 4U) == CLKS_FALSE) {
diff --git a/docs/stage8.md b/docs/stage8.md
new file mode 100644
index 0000000..848e1f4
--- /dev/null
+++ b/docs/stage8.md
@@ -0,0 +1,36 @@
+# CLeonOS Stage8
+
+## Stage Goal
+- Add kernel driver abstraction and registration framework.
+- Register built-in drivers (serial, framebuffer, tty) under a unified manager.
+- Probe `/driver` directory ELF drivers from ramdisk and validate ELF metadata.
+- Extend user app packaging to include driver ELF in `/driver`.
+
+## Acceptance Criteria
+- Kernel boots and prints `CLEONOS STAGE8 START`.
+- Driver framework logs `DRIVER MANAGER ONLINE`.
+- Built-in drivers are registered and total driver count is logged.
+- `/driver/*.elf` files are discovered, validated, and logged as `DRIVER ELF READY`.
+- System continues to scheduler/interrupt/syscall idle loop without panic.
+
+## Build Targets
+- `make setup`
+- `make userapps`
+- `make iso`
+- `make run`
+- `make debug`
+
+## QEMU Command
+- `qemu-system-x86_64 -M q35 -m 1024M -cdrom build/CLeonOS-x86_64.iso -serial stdio`
+
+## Common Bugs and Debugging
+- `DRIVER ELF INVALID`:
+  - Verify ELF is built as x86_64 ELF64 and has valid program headers.
+- `DRIVER ELF MISSING`:
+  - Ensure `make userapps` finished and ramdisk staging copied files to `/driver`.
+- Driver count is lower than expected:
+  - Check `clks_driver_init()` call order occurs after `clks_fs_init()`.
+- Build failure for `ttydrv_main.c` symbols:
+  - Confirm `cleonos/c/apps/ttydrv_main.c` exists and `USER_TTYDRV_OBJECT` is in Makefile.
+- No driver logs on boot:
+  - Confirm kernel includes `clks/kernel/driver.c` in `C_SOURCES`.