Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5150
-gerrit
commit cdf9c9b4c84f27207b10f6778e6df688b8deb9fe Author: Aaron Durbin adurbin@chromium.org Date: Wed Feb 5 15:44:30 2014 -0600
memranges: add memranges_update_tag() functionality
The memranges_update_tag() function replaces all instances that are tagged with old_tag and update to new_tag. This can be helpful in the MTRR code by adjusting the address space if certain memory types cause the MTRR usage to become too large.
Change-Id: Ie5c405204de2fdd9fd1dd5d6190b223925d6d318 Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/include/memrange.h | 4 ++++ src/lib/memrange.c | 13 +++++++++++++ 2 files changed, 17 insertions(+)
diff --git a/src/include/memrange.h b/src/include/memrange.h index 0e69b2f..4f094f5 100644 --- a/src/include/memrange.h +++ b/src/include/memrange.h @@ -110,6 +110,10 @@ void memranges_create_hole(struct memranges *ranges, void memranges_insert(struct memranges *ranges, resource_t base, resource_t size, unsigned long tag);
+/* Update all entries with old_tag to new_tag. */ +void memranges_update_tag(struct memranges *ranges, unsigned long old_tag, + unsigned long new_tag); + /* Returns next entry after the provided entry. NULL if r is last. */ struct range_entry *memranges_next_entry(struct memranges *ranges, const struct range_entry *r); diff --git a/src/lib/memrange.c b/src/lib/memrange.c index af56e72..0ebac05 100644 --- a/src/lib/memrange.c +++ b/src/lib/memrange.c @@ -204,6 +204,19 @@ static void merge_add_memranges(struct memranges *ranges, merge_neighbor_entries(ranges); }
+void memranges_update_tag(struct memranges *ranges, unsigned long old_tag, + unsigned long new_tag) +{ + struct range_entry *r; + + memranges_each_entry(r, ranges) { + if (range_entry_tag(r) == old_tag) + range_entry_update_tag(r, new_tag); + } + + merge_neighbor_entries(ranges); +} + typedef void (*range_action_t)(struct memranges *ranges, resource_t begin, resource_t end, unsigned long tag);