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2017-05-17 20:29:22 -04:00 · 2017-05-17 20:29:22 -04:00 · c435f663b0
parent db82156ff9
commit c435f663b0
1 changed files with 6 additions and 0 deletions
--- a/firmware/global.h
+++ b/firmware/global.h
@ -64,6 +64,12 @@ typedef unsigned int time_t;
 #endif


+/**
+ * rusEfi is placing some of data structures into CCM memory simply
+ * in order to use that memory - no magic about which RAM is faster etc.
+ *
+ * Please note that DMA does not work with CCM memory
+ */
 #if EFI_USE_CCM && defined __GNUC__
 #define CCM_OPTIONAL __attribute__((section(".ram4")))
 #elif defined __GNUC__