From d67a4bd5a7f2270294a83a15ba4bc58d16e67180 Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Tue, 10 Apr 2018 09:31:10 +0200 Subject: 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 Reviewed-on: https://review.coreboot.org/25582 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/lib/memrange.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/lib') diff --git a/src/lib/memrange.c b/src/lib/memrange.c index d3cda121f1..96d7524218 100644 --- a/src/lib/memrange.c +++ b/src/lib/memrange.c @@ -310,6 +310,22 @@ void memranges_init(struct memranges *ranges, 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) { -- cgit v1.2.3