lib/memrange: Introduce method to clone memrange
Add a new method to clone an existing memrange with all of its entries.
Required for new bootmem type LB_MEM_RAM_DONT_OVERLAP.
Change-Id: I64b27bf2611ca310385ef680f030a3e4aa0c2680
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/25582
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/lib/memrange.c b/src/lib/memrange.c
index d3cda12..96d75242 100644
--- a/src/lib/memrange.c
+++ b/src/lib/memrange.c
@@ -310,6 +310,22 @@
memranges_add_resources(ranges, mask, match, tag);
}
+/* Clone a memrange. The new memrange has the same entries as the old one. */
+void memranges_clone(struct memranges *newranges, struct memranges *oldranges)
+{
+ struct range_entry *r, *cur;
+ struct range_entry **prev_ptr;
+
+ memranges_init_empty(newranges, NULL, 0);
+
+ prev_ptr = &newranges->entries;
+ memranges_each_entry(r, oldranges) {
+ cur = range_list_add(newranges, prev_ptr, r->begin, r->end,
+ r->tag);
+ prev_ptr = &cur->next;
+ }
+}
+
void memranges_teardown(struct memranges *ranges)
{
while (ranges->entries != NULL) {