storage: Add STORAGE_HOSTFS

CONFIG_STORAGE & STORAGE_HOSTFS allows to use parts of the storage_* API to be
compiled for application targets without compiling storage.c or performing
actually raw storage access. This is primarily to enable application targets to
implement HAVE_MULTIVOMULE/HAVE_HOTSWAP (in a later commit).

SIMULATOR uses the same mechanism without explicitely defining STORAGE_HOSTFS
(how to add a bit to an existing preprocessor token?).

Change-Id: Ib3f8ee0d5231e2ed21ff00842d51e32bc4fc7292

1 files changed, 14 insertions, 0 deletions

diff --git a/firmware/target/hosted/samsungypr/ypr0/system-ypr0.c b/firmware/target/hosted/samsungypr/ypr0/system-ypr0.c
index 6232df4a22..477b71c6a2 100644
--- a/firmware/target/hosted/samsungypr/ypr0/system-ypr0.c
+++ b/firmware/target/hosted/samsungypr/ypr0/system-ypr0.c
@@ -21,9 +21,11 @@
 #include <stdlib.h>
 #include <string.h>
 #include <inttypes.h>
+#include <unistd.h>
 #include "system.h"
 #include "panic.h"
 #include "debug.h"
+#include "hostfs.h"
 
 #include "ascodec.h"
 #include "gpio-ypr.h"
@@ -59,6 +61,18 @@ void system_exception_wait(void)
     system_reboot();
 }
 
+void hostfs_init(void)
+{
+    /* stub */
+}
+
+int hostfs_flush(void)
+{
+    sync();
+
+    return 0;
+}
+
 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 #include <stdio.h>
 #include "file.h"