spl: Add C-based runtime detection of SPL
The spl_phase() function indicates whether U-Boot is in SPL and before
or after relocation. But sometimes it is useful to check for SPL with
zero code-size impact. Since spl_phase() checks the global_data flags,
it does add a few bytes.
Add a new spl_in_proper() function to check if U-Boot proper is
running, regardless of the relocation status.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/spl.h b/include/spl.h
index 59c5082..a222db9 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -132,6 +132,16 @@
#endif
}
+/* returns true if in U-Boot proper, false if in SPL */
+static inline bool spl_in_proper(void)
+{
+#ifdef CONFIG_SPL_BUILD
+ return false;
+#endif
+
+ return true;
+}
+
/**
* spl_prev_phase() - Figure out the previous U-Boot phase
*