secure_fw: Fix spelling typos

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: I58da18eb39f746c169e7e401d921b84e13d70345
diff --git a/secure_fw/spm/include/bitops.h b/secure_fw/spm/include/bitops.h
index ed3ddd9..ce3aef4 100644
--- a/secure_fw/spm/include/bitops.h
+++ b/secure_fw/spm/include/bitops.h
@@ -9,7 +9,7 @@
 
 #include <stdint.h>
 
-/* Check if there is only one bit availiable in a 32bit number */
+/* Check if there is only one bit available in a 32bit number */
 #define IS_ONLY_ONE_BIT_IN_UINT32(n)                          \
                   ((uint32_t)(n) && !((uint32_t)(n) & ((uint32_t)(n)-1)))
 #endif /* __BITOPS_H__ */
diff --git a/secure_fw/spm/include/load/partition_defs.h b/secure_fw/spm/include/load/partition_defs.h
index 4ae9170..6d05bc9 100644
--- a/secure_fw/spm/include/load/partition_defs.h
+++ b/secure_fw/spm/include/load/partition_defs.h
@@ -33,7 +33,7 @@
  * +---------+--+--+---+---+----------+
  *
  * Field                Desc                        Value
- * Priority, bits[7:0]:  Partition Priority          Lowest, low, normal, high, hightest
+ * Priority, bits[7:0]:  Partition Priority          Lowest, low, normal, high, highest
  * A/P, bit[8]:          ARoT or PRoT domain         1: PRoT              0: ARoT
  * I/S, bit[9]:          IPC or SFN typed partition  1: IPC               0: SFN
  * MB,  bit[10]:         NS Agent Mailbox or not     1: NS Agent mailbox  0: Not
diff --git a/secure_fw/spm/include/tfm_arch.h b/secure_fw/spm/include/tfm_arch.h
index 2d2f928..b321169 100644
--- a/secure_fw/spm/include/tfm_arch.h
+++ b/secure_fw/spm/include/tfm_arch.h
@@ -138,8 +138,8 @@
     struct tfm_additional_context_t addi_ctx;
     uint32_t exc_return;                  /* exception return value on SVC_PREPARE_DEPRIV_FLIH */
     uint32_t dummy;                       /* dummy value for 8 bytes aligned                   */
-    uint32_t psp;                         /* PSP when interrupt exception ocurrs               */
-    uint32_t psplim;                      /* PSPLIM when interrupt exception ocurrs when       */
+    uint32_t psp;                         /* PSP when interrupt exception occurs               */
+    uint32_t psplim;                      /* PSPLIM when interrupt exception occurs when       */
     struct tfm_state_context_t state_ctx; /* ctx on SVC_PREPARE_DEPRIV_FLIH                    */
 };
 
@@ -322,7 +322,7 @@
  * target PSA API to avoid using up the Secure Partitions' stacks. The NS agent
  * shares the stack with the SPM so it doesn't need to switch.
  *
- * The stack check process destroyes the caller registers so the input args and
+ * The stack check process destroys the caller registers so the input args and
  * the target PSA API address are stored in the caller stack at the beginning.
  * They are loaded again before the PSA API is called. This function is
  * non-preemptive except for the target PSA API execution.
diff --git a/secure_fw/spm/include/tfm_core_trustzone.h b/secure_fw/spm/include/tfm_core_trustzone.h
index 4bb56cb..4de4dd6 100644
--- a/secure_fw/spm/include/tfm_core_trustzone.h
+++ b/secure_fw/spm/include/tfm_core_trustzone.h
@@ -29,7 +29,7 @@
 #define TFM_BASIC_FP_CONTEXT_WORDS      18
 
 /*
- * The numbers in 32bit words while addtional FP involved in preempted context:
+ * The numbers in 32bit words while additional FP involved in preempted context:
  * S16 - S31
  */
 #define TFM_ADDTIONAL_FP_CONTEXT_WORDS  16