diff --git a/sw/airborne/arch/chibios/modules/tlsf/tlsf_malloc_arch.h b/sw/airborne/arch/chibios/modules/tlsf/tlsf_malloc_arch.h
index 76407b1b90..11c31e609c 100644
--- a/sw/airborne/arch/chibios/modules/tlsf/tlsf_malloc_arch.h
+++ b/sw/airborne/arch/chibios/modules/tlsf/tlsf_malloc_arch.h
@@ -29,20 +29,17 @@
 #define TLSF_MALLOC_ARCH_H
 #include <ch.h>
 #include <hal.h>
+#include "mcu_periph/ram_arch.h"
 
-#if defined STM32F4XX
-#define NODMA_SECTION ".ram4"
-#define DMA_SECTION ".ram0"
-#elif  defined STM32F7XX
-#define NODMA_SECTION ".ram0"
-#define DMA_SECTION ".ram3"
-#else
-#error "section defined only for STM32F4 and STM32F7"
-#endif
 
 #define HEAP_CCM          ccmHeap
+// F7 has more than twice RAM than others families
+#if defined STM32F7XX
+#define HEAP_CCM_SIZE     65536
+#else 
 #define HEAP_CCM_SIZE     16384
-#define HEAP_CCM_SECTION  NODMA_SECTION
+#endif
+#define HEAP_CCM_SECTION  FAST_SECTION
 
 #define HEAP_DEFAULT      HEAP_CCM
 
diff --git a/sw/airborne/boards/apogee/chibios/v1.0/mcuconf.h b/sw/airborne/boards/apogee/chibios/v1.0/mcuconf.h
index ccbf014a55..430f69c53b 100644
--- a/sw/airborne/boards/apogee/chibios/v1.0/mcuconf.h
+++ b/sw/airborne/boards/apogee/chibios/v1.0/mcuconf.h
@@ -387,7 +387,7 @@
 #define SDLOG_QUEUE_BUCKETS  1024
 #define SDLOG_MAX_MESSAGE_LEN 300
 #define SDLOG_NUM_FILES 2
-#define SDLOG_ALL_BUFFERS_SIZE (SDLOG_NUM_FILES*8192)
+#define SDLOG_ALL_BUFFERS_SIZE (SDLOG_NUM_FILES*8*1024)
 
 
 
diff --git a/sw/airborne/boards/chimera/chibios/v1.0/mcuconf.h b/sw/airborne/boards/chimera/chibios/v1.0/mcuconf.h
index 804007fd78..8c0779b3e5 100644
--- a/sw/airborne/boards/chimera/chibios/v1.0/mcuconf.h
+++ b/sw/airborne/boards/chimera/chibios/v1.0/mcuconf.h
@@ -455,10 +455,10 @@
 /*
   sdlog message buffer and queue configuration
  */
-#define SDLOG_QUEUE_BUCKETS  1024
-#define SDLOG_MAX_MESSAGE_LEN 252
-#define SDLOG_NUM_FILES 1
-#define SDLOG_ALL_BUFFERS_SIZE (SDLOG_NUM_FILES*4096*2)
+#define SDLOG_QUEUE_BUCKETS    1024
+#define SDLOG_MAX_MESSAGE_LEN  300
+#define SDLOG_NUM_FILES        2
+#define SDLOG_ALL_BUFFERS_SIZE (SDLOG_NUM_FILES*16*1024)
 
 /*
  * WDG driver system settings.