Cosmetic changes to comments and README files

arch/arm/src/a1x/a1x_boot.c

@@ -139,6 +139,8 @@ static inline void a1x_setupmappings(void)
 {
   int i;
 
+  /* Set up each group of section mappings */
+
   for (i = 0; i < NMAPPINGS; i++)
     {
       mmu_l1_map_region(&section_mapping[i]);
@@ -162,7 +164,7 @@ static void a1x_vectorpermissions(uint32_t mmuflags)
 
   uint32_t pte = mmu_l2_getentry(PG_L2_VECT_VADDR, 0);
 
-  /* String the MMU flags from the page table entry.
+  /* Mask out the old MMU flags from the page table entry.
    *
    * The pte might be zero the first time this function is called.
    */

arch/arm/src/armv7-a/arm_head.S

@@ -225,7 +225,7 @@ __start:
 	 * mapped RAM in either case.  So we will need to create a special
 	 * mapping for the page table.
 	 *
-	 * Load informtion needed to map the page table.  After the ldmia, we
+	 * Load information needed to map the page table.  After the ldmia, we
 	 * will have
 	 *
 	 *   R1 = The aligned, physical base address of the page table

arch/arm/src/armv7-a/arm_mmu.c

@@ -165,7 +165,7 @@ void mmu_l1_map_region(const struct section_mapping_s *mapping)
   uint32_t mmuflags = mapping->mmuflags;
   int i;
 
-  /* Loop, writting each mapping into the L1 page table */
+  /* Loop, writing each mapping into the L1 page table */
 
   for (i = 0; i < mapping->nsections; i++)
     {
@@ -194,7 +194,7 @@ void mmu_invalidate_region(uint32_t vstart, size_t size)
   uint32_t vaddr = vstart & 0xfffff000;
   uint32_t vend  = vaddr + size;
 
-  /* Loop, writting each mapping into the L1 page table */
+  /* Loop, writing each mapping into the L1 page table */
 
   while (vaddr < vend)
     {

arch/arm/src/sama5/sam_boot.c

@@ -321,6 +321,8 @@ static inline void sam_setupmappings(void)
 {
   int i;
 
+  /* Set up each group of section mappings */
+
   for (i = 0; i < NMAPPINGS; i++)
     {
       mmu_l1_map_region(&section_mapping[i]);
@@ -341,6 +343,8 @@ static inline void sam_remap(void)
 {
   int i;
 
+  /* Re-map each group of section */
+
   for (i = 0; i < NREMAPPINGS; i++)
     {
       mmu_l1_map_region(&operational_mapping[i]);
@@ -364,7 +368,7 @@ static void sam_vectorpermissions(uint32_t mmuflags)
 
   uint32_t pte = mmu_l2_getentry(PG_L2_VECT_VADDR, 0);
 
-  /* String the MMU flags from the page table entry.
+  /* Mask out the old MMU flags from the page table entry.
    *
    * The pte might be zero the first time this function is called.
    */