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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>
This commit is contained in:
Patrick Rudolph 2018-04-10 09:31:10 +02:00 committed by Patrick Georgi
parent c578efd9ca
commit d67a4bd5a7
2 changed files with 19 additions and 0 deletions
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3
src/include/memrange.h
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@ -98,6 +98,9 @@ void memranges_init(struct memranges *ranges,
unsigned long mask, unsigned long match,
unsigned long tag);
/* Clone a memrange. The new memrange has the same entries as the old one. */
void memranges_clone(struct memranges *newranges, struct memranges *oldranges);
/* Remove and free all entries within the memranges structure. */
void memranges_teardown(struct memranges *ranges);

16
src/lib/memrange.c
View File

@ -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) {