--- /dev/null
+#ifndef _LWK_INIT_H
+#define _LWK_INIT_H
+
+#include <lwk/compiler.h>
+
+/* These macros are used to mark some functions or
+ * initialized data (doesn't apply to uninitialized data)
+ * as `initialization' functions. The kernel can take this
+ * as hint that the function is used only during the initialization
+ * phase and free up used memory resources after
+ *
+ * Usage:
+ * For functions:
+ *
+ * You should add __init immediately before the function name, like:
+ *
+ * static void __init initme(int x, int y)
+ * {
+ * extern int z; z = x * y;
+ * }
+ *
+ * If the function has a prototype somewhere, you can also add
+ * __init between closing brace of the prototype and semicolon:
+ *
+ * extern int initialize_foobar_device(int, int, int) __init;
+ *
+ * For initialized data:
+ * You should insert __initdata between the variable name and equal
+ * sign followed by value, e.g.:
+ *
+ * static int init_variable __initdata = 0;
+ * static char linux_logo[] __initdata = { 0x32, 0x36, ... };
+ *
+ * Don't forget to initialize data not at file scope, i.e. within a function,
+ * as gcc otherwise puts the data into the bss section and not into the init
+ * section.
+ *
+ * Also note, that this data cannot be "const".
+ */
+
+/* These are for everybody (although not all archs will actually
+ discard it in modules) */
+#define __init __attribute__ ((__section__ (".init.text")))
+#define __meminit __init
+#define __cpuinit __init
+#define __initdata __attribute__ ((__section__ (".init.data")))
+#define __exitdata __attribute__ ((__section__(".exit.data")))
+#define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
+#define __exit __attribute_used__ __attribute__ ((__section__(".exit.text")))
+#define __cpuinitdata __initdata
+
+/* For assembly routines */
+#define __INIT .section ".init.text","ax"
+#define __FINIT .previous
+#define __INITDATA .section ".init.data","aw"
+
+/* TODO: move this */
+#define COMMAND_LINE_SIZE 1024
+
+#ifndef __ASSEMBLY__
+
+#include <lwk/types.h>
+
+/* Defined in init/main.c */
+extern char lwk_command_line[COMMAND_LINE_SIZE];
+
+/* used by init/main.c */
+extern void setup_arch(void);
+
+extern void start_kernel(void);
+
+extern int create_init_task(void);
+extern paddr_t init_elf_image;
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _LWK_INIT_H */
