Update OpenAmp Arduino implementation to MP1 Cube version 1.5.0

Merge udates from:
STM32CubeMP1\Projects\STM32MP157C-DK2\Applications\OpenAMP\OpenAMP_TTY_echo\

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>

Author: ABOSTM

cores/arduino/stm32/OpenAMP/openamp.c

@@ -62,10 +62,10 @@ struct metal_device shm_device = {
 static int OPENAMP_shmem_init(int RPMsgRole)
 {
   int status = 0;
-  struct metal_device *device;
+  struct metal_device *device = NULL;
   struct metal_init_params metal_params = METAL_INIT_DEFAULTS;
-  void *rsc_tab_addr;
-  int rsc_size;
+  void *rsc_tab_addr = NULL;
+  int rsc_size = 0;
 
   metal_init(&metal_params);
 
@@ -81,7 +81,7 @@ static int OPENAMP_shmem_init(int RPMsgRole)
 
   shm_physmap = SHM_START_ADDRESS;
   metal_io_init(&device->regions[0], (void *)SHM_START_ADDRESS, &shm_physmap,
-                SHM_SIZE, -1, 0, NULL);
+                SHM_SIZE, (unsigned int) -1, 0, NULL);
 
   shm_io = metal_device_io_region(device, 0);
   if (shm_io == NULL) {
@@ -113,8 +113,8 @@ static int OPENAMP_shmem_init(int RPMsgRole)
  */
 int OPENAMP_Init()
 {
-  struct fw_rsc_vdev_vring *vring_rsc;
-  struct virtio_device *vdev;
+  struct fw_rsc_vdev_vring *vring_rsc = NULL;
+  struct virtio_device *vdev = NULL;
   int status = 0;
 
   MAILBOX_Init();

cores/arduino/stm32/OpenAMP/openamp.h

@@ -35,7 +35,6 @@ extern "C" {
 
 int OPENAMP_Init(void);
 void OPENAMP_DeInit(void);
-void OPENAMP_init_ept(struct rpmsg_endpoint *ept);
 
 int OPENAMP_create_endpoint(struct rpmsg_endpoint *ept, const char *name,
                             uint32_t dest, rpmsg_ept_cb cb,

cores/arduino/stm32/OpenAMP/openamp_conf.h

@@ -54,9 +54,9 @@ extern int __OPENAMP_region_end__[];    /* defined by linker script */
 #define SHM_SIZE                (size_t)((void *)__OPENAMP_region_end__ - (void *) __OPENAMP_region_start__)
 
 #if defined STM32MP1xx
-#define VRING_RX_ADDRESS        -1        /* allocated by Master processor: CA7 */
-#define VRING_TX_ADDRESS        -1        /* allocated by Master processor: CA7 */
-#define VRING_BUFF_ADDRESS      -1        /* allocated by Master processor: CA7 */
+#define VRING_RX_ADDRESS     ((unsigned int)-1)  /* allocated by Master processor: CA7 */
+#define VRING_TX_ADDRESS     ((unsigned int)-1)  /* allocated by Master processor: CA7 */
+#define VRING_BUFF_ADDRESS   ((unsigned int)-1)  /* allocated by Master processor: CA7 */
 #define VRING_ALIGNMENT         16        /* fixed to match with linux constraint */
 #ifndef VRING_NUM_BUFFS
 #define VRING_NUM_BUFFS         16        /* number of rpmsg buffer */