Rearrange fields in TF data structures to reduce padding
This patch rearranges fields of the `image_desc_t` & `auth_img_desc_t`
data structures to reduce padding between the fields and thereby
save memory.
NOTE: Platform ports which anonymously initialize these structures
should be aware of the rearrangement and do the required
modification.
Change-Id: I428b5429632797b31d5bd306174599c07e24c060
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 0ec7a8d..e5e6717 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -202,8 +202,9 @@
* switching exception levels. The only two mechanisms to do so are
* ERET & SMC. Security state is indicated using bit zero of header
* attribute
- * NOTE: BL1 expects entrypoint followed by spsr while processing
- * SMC to jump to BL31 from the start of entry_point_info
+ * NOTE: BL1 expects entrypoint followed by spsr at an offset from the start
+ * of this structure defined by the macro `ENTRY_POINT_INFO_PC_OFFSET` while
+ * processing SMC to jump to BL31.
*****************************************************************************/
typedef struct entry_point_info {
param_header_t h;
@@ -232,13 +233,13 @@
typedef struct image_desc {
/* Contains unique image id for the image. */
unsigned int image_id;
- image_info_t image_info;
- entry_point_info_t ep_info;
/*
* This member contains Image state information.
* Refer IMAGE_STATE_XXX defined above.
*/
unsigned int state;
+ image_info_t image_info;
+ entry_point_info_t ep_info;
} image_desc_t;
/*******************************************************************************