SPM: Rename IS_PARTITION_*** to IS_***

Remove redundant namespace 'PARTITION' to make it shorter.
And updated the flags bit assignment explanation comments for easier understanding.

Signed-off-by: Summer Qin <summer.qin@arm.com>
Change-Id: I218e08b945309017f07e2e595a3c684e00be4bdf
diff --git a/secure_fw/spm/cmsis_psa/spm_ipc.c b/secure_fw/spm/cmsis_psa/spm_ipc.c
index 21d01e1..de771b4 100755
--- a/secure_fw/spm/cmsis_psa/spm_ipc.c
+++ b/secure_fw/spm/cmsis_psa/spm_ipc.c
@@ -425,7 +425,7 @@
         tfm_core_panic();
     }
 
-    return IS_PARTITION_NS_AGENT(partition->p_ldinf);
+    return IS_NS_AGENT(partition->p_ldinf);
 }
 
 int32_t tfm_spm_get_client_id(bool ns_caller)
diff --git a/secure_fw/spm/ffm/backend_ipc.c b/secure_fw/spm/ffm/backend_ipc.c
index 469e7f3..b727be1 100644
--- a/secure_fw/spm/ffm/backend_ipc.c
+++ b/secure_fw/spm/ffm/backend_ipc.c
@@ -121,7 +121,7 @@
     /* common runtime metadata */
     allocate_size = sizeof(*p_rt_meta);
 
-    if (!IS_PARTITION_IPC_MODEL(p_pt_ldi)) {
+    if (!IS_IPC_MODEL(p_pt_ldi)) {
         /* SFN specific metadata - SFN function table */
         allocate_size += sizeof(service_fn_t) * p_pt_ldi->nservices;
     }
@@ -140,7 +140,7 @@
     p_rt_meta->n_sfn = 0;
     p_sfn_table = p_rt_meta->sfn_table;
 
-    if (!IS_PARTITION_IPC_MODEL(p_pt_ldi)) {
+    if (!IS_IPC_MODEL(p_pt_ldi)) {
         /* SFN table. The signal bit of the service is the same index of SFN. */
         for (int i = 0; i < p_pt_ldi->nservices; i++) {
             p_sfn_table[i] = (service_fn_t)p_srv_ldi[i].sfn;
@@ -237,7 +237,7 @@
               TO_THREAD_PRIORITY(PARTITION_PRIORITY(p_pldi->flags)));
 
 #if (CONFIG_TFM_PSA_API_CROSS_CALL == 1) && defined(CONFIG_TFM_USE_TRUSTZONE)
-    if (IS_PARTITION_NS_AGENT(p_pldi)) {
+    if (IS_NS_AGENT(p_pldi)) {
         /* Get the context from ns_agent_tz */
         if (p_pldi->pid == 0) {
             SPM_THREAD_CONTEXT = &p_pt->ctx_ctrl;
@@ -245,7 +245,7 @@
     }
 #endif
 
-    if (IS_PARTITION_IPC_MODEL(p_pldi)) {
+    if (IS_IPC_MODEL(p_pldi)) {
         /* IPC Partition */
         thrd_entry = POSITION_TO_ENTRY(p_pldi->entry, thrd_fn_t);
     } else {
diff --git a/secure_fw/spm/ffm/backend_sfn.c b/secure_fw/spm/ffm/backend_sfn.c
index c9d9d6d..7e24131 100644
--- a/secure_fw/spm/ffm/backend_sfn.c
+++ b/secure_fw/spm/ffm/backend_sfn.c
@@ -94,7 +94,7 @@
     p_curr = GET_CURRENT_COMPONENT();
     /* Call partition initialization routine one by one. */
     UNI_LIST_FOREACH(p_part, PARTITION_LIST_ADDR, next) {
-        if (IS_PARTITION_IPC_MODEL(p_part->p_ldinf)) {
+        if (IS_IPC_MODEL(p_part->p_ldinf)) {
             continue;
         }
 
@@ -132,7 +132,7 @@
      * Built-in partitions still have thread instances: NS Agent (TZ) and
      * IDLE partition, and NS Agent (TZ) needs to be specific cared here.
      */
-    if (IS_PARTITION_NS_AGENT(p_pldi)) {
+    if (IS_NS_AGENT(p_pldi)) {
         ARCH_CTXCTRL_INIT(&ns_agent_ctrl,
                           LOAD_ALLOCED_STACK_ADDR(p_pldi),
                           p_pldi->stack_size);
diff --git a/secure_fw/spm/include/load/partition_defs.h b/secure_fw/spm/include/load/partition_defs.h
index 37cce25..d007c56 100644
--- a/secure_fw/spm/include/load/partition_defs.h
+++ b/secure_fw/spm/include/load/partition_defs.h
@@ -24,10 +24,19 @@
 #define PARTITION_INFO_MAGIC                    (0x5F5F0000)
 
 /*
- * Partition load data - flags
- * bit 7-0: priority
- * bit 8: 1 - PSA_ROT, 0 - APP_ROT
- * bit 9: 1 - IPC model, 0 - SFN model
+ * Partition flag start
+ *
+ * 31       10  9   8   7          0
+ * +---------+--+---+---+----------+
+ * | RES[21] |NS|I/S|A/P| Priority |
+ * +---------+--+---+---+----------+
+ *
+ * Field      Desc                        Value
+ * Priority:  Partition Priority          Lowest, low, normal, high, hightest
+ * A/P:       ARoT or PRoT domain         1: PRoT              0: ARoT
+ * I/S:       IPC or SFN typed partition  1: IPC               0: SFN
+ * NS:        NS Agent or not             1: NS Agent          0: Not
+ * RES:       21 bits reserved            0
  */
 #define PARTITION_PRI_HIGHEST                   (0x0)
 #define PARTITION_PRI_HIGH                      (0xF)
@@ -50,12 +59,13 @@
 #define PTR_TO_REFERENCE(x)                     (uintptr_t)(x)
 #define REFERENCE_TO_PTR(x, t)                  (t)(x)
 
-#define IS_PARTITION_PSA_ROT(pldi)              (!!((pldi)->flags \
+#define IS_PSA_ROT(pldi)                        (!!((pldi)->flags \
                                                      & PARTITION_MODEL_PSA_ROT))
-#define IS_PARTITION_IPC_MODEL(pldi)            (!!((pldi)->flags \
-                                                         & PARTITION_MODEL_IPC))
-#define IS_PARTITION_NS_AGENT(pldi)             (!!((pldi)->flags \
-                                                         & PARTITION_NS_AGENT))
+#define IS_IPC_MODEL(pldi)                      (!!((pldi)->flags \
+                                                     & PARTITION_MODEL_IPC))
+#define IS_NS_AGENT(pldi)                       (!!((pldi)->flags \
+                                                     & PARTITION_NS_AGENT))
+/* Partition flag end */
 
 /*
  * Common partition structure type, the extendable data is right after it.