diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2014-02-05 15:44:30 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@google.com> | 2014-02-06 00:08:59 +0100 |
| commit | ed9307db13671ee347a3f1288e87da508139feea (patch) | |
| tree | 3239fb71e90f5b6757a8dd120138f5f411d77232 /src | |
| parent | 3d6ffe76f8a505c2dff5d5c6146da3d63dad6e82 (diff) | |
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>
Reviewed-on: http://review.coreboot.org/5150
Tested-by: build bot (Jenkins)
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/memrange.h | 4 | ||||
| -rw-r--r-- | src/lib/memrange.c | 13 |
2 files changed, 17 insertions, 0 deletions
diff --git a/src/include/memrange.h b/src/include/memrange.h index 0e69b2ffeb..4f094f593e 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 af56e72159..0ebac0534e 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); |