emds: Fix size calculation required by emds entries on RRAM

The total size required by emds entries calculated more than what is
actually being used. For RRAM, we don't need to align the data with
write block size. We can write as many bytes as we want up to the size
of write block size, thus we don't need to align writes with write
block size.

Signed-off-by: alperen sener <[email protected]>

subsys/emds/emds.c

@@ -75,16 +75,28 @@ static int emds_entries_size(uint32_t *size)
 	*size = 0;
 
 	STRUCT_SECTION_FOREACH(emds_entry, ch) {
+#if defined CONFIG_SOC_FLASH_NRF_RRAM
+		/* Data is not required to be alinged with block_size for RRAM */
+		*size += ch->len;
+		*size += emds_flash.ate_size;
+#else
 		*size += DIV_ROUND_UP(ch->len, block_size) * block_size;
 		*size += DIV_ROUND_UP(emds_flash.ate_size, block_size) * block_size;
+#endif
 		entries++;
 	}
 
 	struct emds_dynamic_entry *ch;
 
 	SYS_SLIST_FOR_EACH_CONTAINER(&emds_dynamic_entries, ch, node) {
+#if defined CONFIG_SOC_FLASH_NRF_RRAM
+		/* Data is not required to be alinged with block_size for RRAM */
+		*size += ch->entry.len;
+		*size += emds_flash.ate_size;
+#else
 		*size += DIV_ROUND_UP(ch->entry.len, block_size) * block_size;
 		*size += DIV_ROUND_UP(emds_flash.ate_size, block_size) * block_size;
+#endif
 		entries++;
 	}
 
@@ -251,7 +263,6 @@ int emds_prepare(void)
 	}
 
 	(void)emds_entries_size(&size);
-
 	rc = emds_flash_prepare(&emds_flash, size);
 	if (rc) {
 		return rc;