RM-1156 stm32f7: disable embedded Flash caching upon boot

This is to be able to program it in Linux wout necessity to reconfigure
MPU.
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>

common/cmd_bootm.c

@@ -708,6 +708,7 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 #if defined(CONFIG_STM32F7_DCACHE_ON) && defined(CONFIG_STM32F7_ICACHE_ON)
 	stm32f7_cache_sync_range(images.os.load,
 				 images.os.load + images.os.image_len);
+	stm32f7_envm_as_dev();
 #endif
 
 	boot_fn(0, argc, argv, &images);

cpu/arm_cortexm3/envm.h

@@ -64,9 +64,4 @@ unsigned int
 void envm_config(u32 wait_states);
 #endif /* CONFIG_SYS_STM32 */
 
-#if defined(CONFIG_STM32F7_DCACHE_ON) || defined(CONFIG_STM32F7_ICACHE_ON)
-void stm32f7_envm_as_dev(void);
-void stm32f7_envm_as_mem(void);
-#endif
-
 #endif /* __ENVM_H__ */

cpu/arm_cortexm3/stm32/envm.c

@@ -23,6 +23,8 @@
 
 #include <common.h>
 #include <errno.h>
+#include <asm/cache.h>
+
 #include "envm.h"
 
 /*

include/asm-arm/cache.h

@@ -34,6 +34,9 @@
  * a memory region, and will be executed.
  */
 void stm32f7_cache_sync_range(u32 s, u32 e);
+
+void stm32f7_envm_as_dev(void);
+void stm32f7_envm_as_mem(void);
 #endif
 
 /*