lib/imd_cbmem.c: Add a helper function to indicate that cbmem is ready
This can be used in romstage in particular to know if dram is ready.
Change-Id: I0231ab9c0b78a69faa762e0a97378bf0b50eebaf
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38736
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/include/cbmem.h b/src/include/cbmem.h
index b548cd9..7e1da17 100644
--- a/src/include/cbmem.h
+++ b/src/include/cbmem.h
@@ -155,4 +155,18 @@
return 1;
}
+/* Returns 1 after running cbmem init hooks, 0 otherwise. */
+static inline int cbmem_online(void)
+{
+ extern int cbmem_initialized;
+
+ if (!cbmem_possibly_online())
+ return 0;
+
+ if (ENV_ROMSTAGE)
+ return cbmem_initialized;
+
+ return 1;
+}
+
#endif /* _CBMEM_H_ */