diff options
| -rw-r--r-- | src/include/bootmem.h | 13 | ||||
| -rw-r--r-- | src/lib/bootmem.c | 14 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/include/bootmem.h b/src/include/bootmem.h index 4964c18f38..161f482e13 100644 --- a/src/include/bootmem.h +++ b/src/include/bootmem.h @@ -68,6 +68,19 @@ void bootmem_add_range(uint64_t start, uint64_t size, /* Print current range map of boot memory. */ void bootmem_dump_ranges(void); +typedef bool (*range_action_t)(const struct range_entry *r, void *arg); + +/** + * Walk memory tables and call the provided function, for every region. + * The caller has to return false to break out of the loop any time, or + * return true to continue. + * + * @param action The function to call for each memory range. + * @param arg Pointer passed to function @action. Set to NULL if unused. + * @return true if the function 'action' returned false. + */ +bool bootmem_walk(range_action_t action, void *arg); + /* Return 1 if region targets usable RAM, 0 otherwise. */ int bootmem_region_targets_usable_ram(uint64_t start, uint64_t size); diff --git a/src/lib/bootmem.c b/src/lib/bootmem.c index 4fbc4b3a3f..ed45e0f384 100644 --- a/src/lib/bootmem.c +++ b/src/lib/bootmem.c @@ -180,6 +180,20 @@ void bootmem_dump_ranges(void) } } +bool bootmem_walk(range_action_t action, void *arg) +{ + const struct range_entry *r; + + assert(bootmem_is_initialized()); + + memranges_each_entry(r, &bootmem) { + if (!action(r, arg)) + return true; + } + + return false; +} + int bootmem_region_targets_usable_ram(uint64_t start, uint64_t size) { const struct range_entry *r; |