CSS: Reorganize the SCP Image transfer functionality
The SCP_BL2 is transferred to SCP during BL2 image load and authenticate
sequence. The Boot-Over-MHU (BOM) protocol is used as transport for this. After
the SCP boots using the transferred image, the AP CPU waits till the `READY`
message is received from SCP. This patch separates the API for transport of
image from the wait for `READY` message and also moves the related files to
the `css/drivers` folder. The previous API `scp_bootloader_transfer` is
renamed to `css_scp_boot_image_xfer` to reflect the css naming convention.
This reorganisation also allows easier switch to a different transport
(eg: Shared Data Structure based transfer) in future
Change-Id: I8a96f9c4616ffde6dbfdf7c18f6f6f8bfa40bbf0
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/plat/arm/css/common/css_bl2_setup.c b/plat/arm/css/common/css_bl2_setup.c
index 73549aa..0712e3a 100644
--- a/plat/arm/css/common/css_bl2_setup.c
+++ b/plat/arm/css/common/css_bl2_setup.c
@@ -11,7 +11,7 @@
#include <plat_arm.h>
#include <string.h>
#include <utils.h>
-#include "css_scp_bootloader.h"
+#include "../drivers/scp/css_scp.h"
/* Weak definition may be overridden in specific CSS based platform */
#if LOAD_IMAGE_V2
@@ -34,10 +34,13 @@
INFO("BL2: Initiating SCP_BL2 transfer to SCP\n");
- ret = scp_bootloader_transfer((void *)scp_bl2_image_info->image_base,
+ ret = css_scp_boot_image_xfer((void *)scp_bl2_image_info->image_base,
scp_bl2_image_info->image_size);
if (ret == 0)
+ ret = css_scp_boot_ready();
+
+ if (ret == 0)
INFO("BL2: SCP_BL2 transferred to SCP\n");
else
ERROR("BL2: SCP_BL2 transfer failure\n");