[PATCH 3/9] bsps/cache: Fix ARM CP-15 get cache size

[Sebastian Huber]

The rtems_cache_get_data_cache_size() and
rtems_cache_get_instruction_cache_size() functions shall return the entire
cache size for a level of 0.  Levels greater than 0 shall return the size of
the associated level.

Update #4982.
---
 bsps/arm/shared/cache/cache-cp15.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/bsps/arm/shared/cache/cache-cp15.c b/bsps/arm/shared/cache/cache-cp15.c
index 92ccfcb276..8e0f22282b 100644
--- a/bsps/arm/shared/cache/cache-cp15.c
+++ b/bsps/arm/shared/cache/cache-cp15.c
@@ -222,12 +222,12 @@ static inline size_t arm_cp15_get_cache_size(
   clidr = arm_cp15_get_cache_level_id();
   loc = arm_clidr_get_level_of_coherency(clidr);
 
-  if (level >= loc) {
-    return 0;
-  }
-
   if (level == 0) {
     level = loc - 1;
+  } else if (level - 1 >= loc) {
+    return 0;
+  } else {
+    --level;
   }
 
   ccsidr = arm_cp15_get_cache_size_id_for_level(
-- 
2.35.3