The patch introduces the interface for the inittab. The patch provides
implementation to group the init function into the respective linker
section.
Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
include/uk/init.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
lib/ukboot/Config.uk | 1 +
2 files changed, 66 insertions(+)
create mode 100644 include/uk/init.h
diff --git a/include/uk/init.h b/include/uk/init.h
new file mode 100644
index 0000000..91cb6ef
--- /dev/null
+++ b/include/uk/init.h
@@ -0,0 +1,65 @@
+#ifndef _UK_INIT_H
+#define _UK_INIT_H
+
+#include <uk/config.h>
+#include <uk/essentials.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int (*uk_init_t)(void);
+
+#define INITTAB_STR_VAR(libname, fn, base, prio) libname ## fn ## base ## prio
+#define INITTAB_SECTION(base, prio) .uk_inittab_ ## base ## prio
+#define INITTAB_SECTION_NAME(name) STRINGIFY(name)
+
+#define __inittab(libname, fn, base, prio) \
+ static const __used __section(INITTAB_SECTION_NAME( \
+ INITTAB_SECTION(base, prio)) \
+ ) \
+ uk_init_t INITTAB_STR_VAR(libname, fn, base, prio) = fn
+
+/**
+ * Define a library initialization. At this point in time some platform
+ * component may not be initialized, so it wise to initializes those component
+ * to initialized.
+ */
+#define uk_early_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 1, prio)
+/**
+ * Define a stage for platform initialization. Platform at this point read
+ * all the device and device are initialized.
+ */
+#define uk_plat_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 2, prio)
+/**
+ * Define a stage for performing library initialization. This library
+ * initialization is performed after the platform is completely initialized.
+ */
+#define uk_lib_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 3, prio)
+/**
+ * Define a stage for filesystem initialization.
+ */
+#define uk_rootfs_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 4, prio)
+/**
+ * Define a stage for device initialization
+ */
+#define uk_sys_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 5, prio)
+/**
+ * Define a stage for application pre-initialization
+ */
+#define uk_late_initcall_prio(fn, prio) __inittab(LIBNAME, fn, 6, prio)
+
+/**
+ * Similar interface without priority.
+ */
+#define uk_early_initcall(fn) uk_early_initcall_prio(fn, 9)
+#define uk_plat_initcall(fn) uk_plat_initcall_prio(fn, 9)
+#define uk_lib_initcall(fn) uk_lib_initcall_prio(fn, 9)
+#define uk_rootfs_initcall(fn) uk_rootfs_initcall_prio(fn, 9)
+#define uk_sys_initcall(fn) uk_sys_initcall_prio(fn, 9)
+#define uk_late_initcall(fn) uk_late_initcall_prio(fn, 9)
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* _UK_INIT_H */
diff --git a/lib/ukboot/Config.uk b/lib/ukboot/Config.uk
index 841a876..4ebd650 100644
--- a/lib/ukboot/Config.uk
+++ b/lib/ukboot/Config.uk
@@ -21,4 +21,5 @@ if LIBUKBOOT
bool "Initialize ukallocbbuddy as allocator"
default y
select LIBUKALLOCBBUDDY
+
endif
