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diff --git a/sys/dev/fdt/fdt_common.h b/sys/dev/fdt/fdt_common.h
--- a/sys/dev/fdt/fdt_common.h
+++ b/sys/dev/fdt/fdt_common.h
@@ -85,6 +85,7 @@
phandle_t fdt_depth_search_compatible(phandle_t, const char *, int);
int fdt_foreach_mem_region(fdt_mem_region_cb, void *);
int fdt_get_mem_regions(struct mem_region *, int *, uint64_t *);
+int fdt_foreach_reserved_mem(fdt_mem_region_cb, void *);
int fdt_get_reserved_mem(struct mem_region *, int *);
int fdt_get_reserved_regions(struct mem_region *, int *);
int fdt_get_phyaddr(phandle_t, device_t, int *, void **);
diff --git a/sys/dev/fdt/fdt_common.c b/sys/dev/fdt/fdt_common.c
--- a/sys/dev/fdt/fdt_common.c
+++ b/sys/dev/fdt/fdt_common.c
@@ -499,6 +499,44 @@
return (rv);
}
+int
+fdt_foreach_reserved_mem(fdt_mem_region_cb cb, void *arg)
+{
+ struct mem_region mr;
+ pcell_t reg[FDT_REG_CELLS];
+ phandle_t child, root;
+ int addr_cells, size_cells;
+ int rv;
+
+ root = OF_finddevice("/reserved-memory");
+ if (root == -1)
+ return (ENXIO);
+
+ if ((rv = fdt_addrsize_cells(root, &addr_cells, &size_cells)) != 0)
+ return (rv);
+
+ if (addr_cells + size_cells > FDT_REG_CELLS)
+ panic("Too many address and size cells %d %d", addr_cells,
+ size_cells);
+
+ for (child = OF_child(root); child != 0; child = OF_peer(child)) {
+ if (!OF_hasprop(child, "no-map"))
+ continue;
+
+ rv = OF_getprop(child, "reg", reg, sizeof(reg));
+ if (rv <= 0)
+ /* XXX: Does a no-map of a dynamic range make sense? */
+ continue;
+
+ fdt_data_to_res(reg, addr_cells, size_cells,
+ (u_long *)&mr.mr_start, (u_long *)&mr.mr_size);
+
+ cb(&mr, arg);
+ }
+
+ return (0);
+}
+
int
fdt_get_reserved_mem(struct mem_region *reserved, int *mreserved)
{

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