diff options
| author | Andreas Fritiofson <andreas.fritiofson@gmail.com> | 2012-02-13 01:19:57 +0100 |
|---|---|---|
| committer | Spencer Oliver <spen@spen-soft.co.uk> | 2012-02-23 14:04:01 +0000 |
| commit | 2eb564b756bb2b7c63c1510845a42491ef82fa8d (patch) | |
| tree | 7b7bf5116de57996a78cca0fd662c4c174c3b978 | |
| parent | 813f4a5411af9a397d6e9bbc682a43738b06baeb (diff) | |
target: add function to get number of bytes available in working area
This is a much cleaner solution to the problem of allocating as much
working area as possible than what is currently being done in most/all flash
drivers (which is: try an arbitrary sized chunk, if it fails, pick a smaller
number, rinse and repeat).
Use this function to find out how much working area is available, limit or
restrict that amount at will and then simply allocate it.
Change-Id: Ib7d5d0b7485aed3e0a4fad60c1bedb7dfd16146f
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/446
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
| -rw-r--r-- | src/target/target.c | 19 | ||||
| -rw-r--r-- | src/target/target.h | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/target/target.c b/src/target/target.c index 26607c57..5b37ef03 100644 --- a/src/target/target.c +++ b/src/target/target.c @@ -1502,6 +1502,25 @@ void target_free_all_working_areas(struct target *target) target_free_all_working_areas_restore(target, 1); } +/* Find the largest number of bytes that can be allocated */ +uint32_t target_get_working_area_avail(struct target *target) +{ + struct working_area *c = target->working_areas; + uint32_t max_size = 0; + + if (c == NULL) + return target->working_area_size; + + while (c) { + if (c->free && max_size < c->size) + max_size = c->size; + + c = c->next; + } + + return max_size; +} + int target_arch_state(struct target *target) { int retval; diff --git a/src/target/target.h b/src/target/target.h index 680f8c32..a5ab3bdd 100644 --- a/src/target/target.h +++ b/src/target/target.h @@ -540,6 +540,7 @@ int target_alloc_working_area_try(struct target *target, uint32_t size, struct working_area **area); int target_free_working_area(struct target *target, struct working_area *area); void target_free_all_working_areas(struct target *target); +uint32_t target_get_working_area_avail(struct target *target); extern struct target *all_targets; |