1 /*
2  * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <bl_common.h>
8 #include <debug.h>
9 #include <plat_arm.h>
10 #include "../drivers/scp/css_scp.h"
11 
12 /* Weak definition may be overridden in specific CSS based platform */
13 #pragma weak bl2u_plat_handle_scp_bl2u
14 
15 /* Data structure which holds the SCP_BL2U image info for BL2U */
16 static image_info_t scp_bl2u_image_info;
17 
18 /*******************************************************************************
19  * BL1 can pass platform dependent information to BL2U in x1.
20  * In case of ARM CSS platforms x1 contains SCP_BL2U image info.
21  * In case of ARM FVP platforms x1 is not used.
22  * In both cases, x0 contains the extents of the memory available to BL2U
23  ******************************************************************************/
bl2u_early_platform_setup(meminfo_t * mem_layout,void * plat_info)24 void bl2u_early_platform_setup(meminfo_t *mem_layout, void *plat_info)
25 {
26 	if (!plat_info)
27 		panic();
28 
29 	arm_bl2u_early_platform_setup(mem_layout, plat_info);
30 
31 	scp_bl2u_image_info = *(image_info_t *)plat_info;
32 }
33 
34 /*******************************************************************************
35  * Transfer SCP_BL2U from Trusted RAM using the SCP Download protocol.
36  ******************************************************************************/
bl2u_plat_handle_scp_bl2u(void)37 int bl2u_plat_handle_scp_bl2u(void)
38 {
39 	int ret;
40 
41 	INFO("BL2U: Initiating SCP_BL2U transfer to SCP\n");
42 
43 	ret = css_scp_boot_image_xfer((void *)scp_bl2u_image_info.image_base,
44 		scp_bl2u_image_info.image_size);
45 
46 	if (ret == 0)
47 		ret = css_scp_boot_ready();
48 
49 	if (ret == 0)
50 		INFO("BL2U: SCP_BL2U transferred to SCP\n");
51 	else
52 		ERROR("BL2U: SCP_BL2U transfer failure\n");
53 
54 	return ret;
55 }
56