1 // SPDX-License-Identifier: BSD-3-Clause
3 * Reference to the ARM TF Project,
4 * plat/arm/common/arm_bl2_setup.c
5 * Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights
7 * Copyright (C) 2016 Rockchip Electronic Co.,Ltd
8 * Written by Kever Yang <kever.yang@rock-chips.com>
9 * Copyright (C) 2017 Theobroma Systems Design und Consulting GmbH
13 #include <atf_common.h>
19 #include <asm/cache.h>
21 static struct bl2_to_bl31_params_mem bl31_params_mem;
22 static struct bl31_params *bl2_to_bl31_params;
24 __weak struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
28 struct entry_point_info *bl32_ep_info;
29 struct entry_point_info *bl33_ep_info;
32 * Initialise the memory for all the arguments that needs to
35 memset(&bl31_params_mem, 0, sizeof(struct bl2_to_bl31_params_mem));
37 /* Assign memory for TF related information */
38 bl2_to_bl31_params = &bl31_params_mem.bl31_params;
39 SET_PARAM_HEAD(bl2_to_bl31_params, ATF_PARAM_BL31, ATF_VERSION_1, 0);
41 /* Fill BL31 related information */
42 bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
43 SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info,
44 ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
46 /* Fill BL32 related information */
47 bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
48 bl32_ep_info = &bl31_params_mem.bl32_ep_info;
49 SET_PARAM_HEAD(bl32_ep_info, ATF_PARAM_EP, ATF_VERSION_1,
52 /* secure payload is optional, so set pc to 0 if absent */
53 bl32_ep_info->args.arg3 = fdt_addr;
54 bl32_ep_info->pc = bl32_entry ? bl32_entry : 0;
55 bl32_ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
56 DISABLE_ALL_EXECPTIONS);
58 bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
59 SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info,
60 ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
62 /* Fill BL33 related information */
63 bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
64 bl33_ep_info = &bl31_params_mem.bl33_ep_info;
65 SET_PARAM_HEAD(bl33_ep_info, ATF_PARAM_EP, ATF_VERSION_1,
68 /* BL33 expects to receive the primary CPU MPID (through x0) */
69 bl33_ep_info->args.arg0 = 0xffff & read_mpidr();
70 bl33_ep_info->pc = bl33_entry;
71 bl33_ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
72 DISABLE_ALL_EXECPTIONS);
74 bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
75 SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info,
76 ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
78 return bl2_to_bl31_params;
81 static inline void raw_write_daif(unsigned int daif)
83 __asm__ __volatile__("msr DAIF, %0\n\t" : : "r" (daif) : "memory");
86 typedef void (*atf_entry_t)(struct bl31_params *params, void *plat_params);
88 static void bl31_entry(uintptr_t bl31_entry, uintptr_t bl32_entry,
89 uintptr_t bl33_entry, uintptr_t fdt_addr)
91 struct bl31_params *bl31_params;
92 atf_entry_t atf_entry = (atf_entry_t)bl31_entry;
94 bl31_params = bl2_plat_get_bl31_params(bl32_entry, bl33_entry,
97 raw_write_daif(SPSR_EXCEPTION_MASK);
100 atf_entry((void *)bl31_params, (void *)fdt_addr);
103 static int spl_fit_images_find(void *blob, int os)
105 int parent, node, ndepth = 0;
109 return -FDT_ERR_BADMAGIC;
111 parent = fdt_path_offset(blob, "/fit-images");
113 return -FDT_ERR_NOTFOUND;
115 for (node = fdt_next_node(blob, parent, &ndepth);
116 (node >= 0) && (ndepth > 0);
117 node = fdt_next_node(blob, node, &ndepth)) {
121 data = fdt_getprop(blob, node, FIT_OS_PROP, NULL);
125 if (genimg_get_os_id(data) == os)
129 return -FDT_ERR_NOTFOUND;
132 uintptr_t spl_fit_images_get_entry(void *blob, int node)
136 val = fdt_getprop_u32(blob, node, "entry-point");
137 if (val == FDT_ERROR)
138 val = fdt_getprop_u32(blob, node, "load-addr");
140 debug("%s: entry point 0x%lx\n", __func__, val);
144 void spl_invoke_atf(struct spl_image_info *spl_image)
146 uintptr_t bl32_entry = 0;
147 uintptr_t bl33_entry = CONFIG_SYS_TEXT_BASE;
148 void *blob = spl_image->fdt_addr;
149 uintptr_t platform_param = (uintptr_t)blob;
153 * Find the OP-TEE binary (in /fit-images) load address or
154 * entry point (if different) and pass it as the BL3-2 entry
155 * point, this is optional.
157 node = spl_fit_images_find(blob, IH_OS_TEE);
159 bl32_entry = spl_fit_images_get_entry(blob, node);
162 * Find the U-Boot binary (in /fit-images) load addreess or
163 * entry point (if different) and pass it as the BL3-3 entry
165 * This will need to be extended to support Falcon mode.
168 node = spl_fit_images_find(blob, IH_OS_U_BOOT);
170 bl33_entry = spl_fit_images_get_entry(blob, node);
173 * If ATF_NO_PLATFORM_PARAM is set, we override the platform
174 * parameter and always pass 0. This is a workaround for
175 * older ATF versions that have insufficiently robust (or
176 * overzealous) argument validation.
178 if (CONFIG_IS_ENABLED(ATF_NO_PLATFORM_PARAM))
182 * We don't provide a BL3-2 entry yet, but this will be possible
183 * using similar logic.
185 bl31_entry(spl_image->entry_point, bl32_entry,
186 bl33_entry, platform_param);