[RFC PATCH 2/7] lmb: add lmb_is_reserved_flags

[Patrick Delaunay]

Add a new function lmb_is_reserved_flags to check is a
address is reserved with a specific flags.

This function can be used to check if an address had be
reserved with no-map flags with:

lmb_is_reserved_flags(lmb, addr, LMB_NOMAP);

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 include/lmb.h |  1 +
 lib/lmb.c     | 10 ++++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/lmb.h b/include/lmb.h
index 1c73f4851b..68e9cc007a 100644
--- a/include/lmb.h
+++ b/include/lmb.h
@@ -59,6 +59,7 @@ extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
 				  phys_size_t size);
 extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
 extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
+extern int lmb_is_reserved_flags(struct lmb *lmb, phys_addr_t addr, int flags);
 extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
 
 extern void lmb_dump_all(struct lmb *lmb);
diff --git a/lib/lmb.c b/lib/lmb.c
index e85e08635c..3d64521a32 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -445,7 +445,7 @@ phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr)
 	return 0;
 }
 
-int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr)
+int lmb_is_reserved_flags(struct lmb *lmb, phys_addr_t addr, int flags)
 {
 	int i;
 
@@ -453,11 +453,17 @@ int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr)
 		phys_addr_t upper = lmb->reserved.region[i].base +
 			lmb->reserved.region[i].size - 1;
 		if ((addr >= lmb->reserved.region[i].base) && (addr <= upper))
-			return 1;
+			return !!((lmb->reserved.region[i].flags & flags)
+				   == flags);
 	}
 	return 0;
 }
 
+int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr)
+{
+	return lmb_is_reserved_flags(lmb, addr, LMB_NONE);
+}
+
 __weak void board_lmb_reserve(struct lmb *lmb)
 {
 	/* please define platform specific board_lmb_reserve() */
-- 
2.17.1