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-rw-r--r--include/magicvar.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/magicvar.h b/include/magicvar.h
new file mode 100644
index 0000000000..d27a2e32a3
--- /dev/null
+++ b/include/magicvar.h
@@ -0,0 +1,32 @@
+#ifndef __MAGIC_VARS_H
+#define __MAGIC_VARS_H
+
+#include <linux/stringify.h>
+
+struct magicvar {
+ const char *name;
+ const char *description;
+};
+
+extern struct magicvar __barebox_magicvar_start;
+extern struct magicvar __barebox_magicvar_end;
+
+#ifdef CONFIG_CMD_MAGICVAR_HELP
+#define MAGICVAR_DESCRIPTION(d) (d)
+#else
+#define MAGICVAR_DESCRIPTION(d) NULL
+#endif
+
+#ifdef CONFIG_CMD_MAGICVAR
+#define BAREBOX_MAGICVAR(_name, _description) \
+extern const struct magicvar __barebox_magicvar_##_name; \
+const struct magicvar __barebox_magicvar_##_name \
+ __attribute__ ((unused,section (".barebox_magicvar_" __stringify(_name)))) = { \
+ .name = #_name, \
+ .description = MAGICVAR_DESCRIPTION(_description), \
+};
+#else
+#define BAREBOX_MAGICVAR(_name, _description)
+#endif
+
+#endif /* __MAGIC_VARS_H */