1 /*
2 * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <common/debug.h>
10 #include <drivers/io/io_driver.h>
11 #include <drivers/io/io_semihosting.h>
12 #include <drivers/io/io_storage.h>
13 #include <lib/semihosting.h>
14 #include <plat/arm/common/plat_arm.h>
15 #include <plat/common/common_def.h>
16
17 /* Semihosting filenames */
18 #define BL2_IMAGE_NAME "bl2.bin"
19 #define BL31_IMAGE_NAME "bl31.bin"
20 #define BL32_IMAGE_NAME "bl32.bin"
21 #define BL33_IMAGE_NAME "bl33.bin"
22 #define TB_FW_CONFIG_NAME "fvp_tb_fw_config.dtb"
23 #define SOC_FW_CONFIG_NAME "fvp_soc_fw_config.dtb"
24 #define TOS_FW_CONFIG_NAME "fvp_tsp_fw_config.dtb"
25 #define NT_FW_CONFIG_NAME "fvp_nt_fw_config.dtb"
26 #define FW_CONFIG_NAME "fvp_fw_config.dtb"
27 #define HW_CONFIG_NAME "hw_config.dtb"
28
29 #if TRUSTED_BOARD_BOOT
30 #define TRUSTED_BOOT_FW_CERT_NAME "tb_fw.crt"
31 #define TRUSTED_KEY_CERT_NAME "trusted_key.crt"
32 #define SOC_FW_KEY_CERT_NAME "soc_fw_key.crt"
33 #define TOS_FW_KEY_CERT_NAME "tos_fw_key.crt"
34 #define NT_FW_KEY_CERT_NAME "nt_fw_key.crt"
35 #define SOC_FW_CONTENT_CERT_NAME "soc_fw_content.crt"
36 #define TOS_FW_CONTENT_CERT_NAME "tos_fw_content.crt"
37 #define NT_FW_CONTENT_CERT_NAME "nt_fw_content.crt"
38 #endif /* TRUSTED_BOARD_BOOT */
39
40 /* IO devices */
41 static const io_dev_connector_t *sh_dev_con;
42 static uintptr_t sh_dev_handle;
43
44 static const io_file_spec_t sh_file_spec[] = {
45 [BL2_IMAGE_ID] = {
46 .path = BL2_IMAGE_NAME,
47 .mode = FOPEN_MODE_RB
48 },
49 [BL31_IMAGE_ID] = {
50 .path = BL31_IMAGE_NAME,
51 .mode = FOPEN_MODE_RB
52 },
53 [BL32_IMAGE_ID] = {
54 .path = BL32_IMAGE_NAME,
55 .mode = FOPEN_MODE_RB
56 },
57 [BL33_IMAGE_ID] = {
58 .path = BL33_IMAGE_NAME,
59 .mode = FOPEN_MODE_RB
60 },
61 [TB_FW_CONFIG_ID] = {
62 .path = TB_FW_CONFIG_NAME,
63 .mode = FOPEN_MODE_RB
64 },
65 [SOC_FW_CONFIG_ID] = {
66 .path = SOC_FW_CONFIG_NAME,
67 .mode = FOPEN_MODE_RB
68 },
69 [TOS_FW_CONFIG_ID] = {
70 .path = TOS_FW_CONFIG_NAME,
71 .mode = FOPEN_MODE_RB
72 },
73 [NT_FW_CONFIG_ID] = {
74 .path = NT_FW_CONFIG_NAME,
75 .mode = FOPEN_MODE_RB
76 },
77 [FW_CONFIG_ID] = {
78 .path = FW_CONFIG_NAME,
79 .mode = FOPEN_MODE_RB
80 },
81 [HW_CONFIG_ID] = {
82 .path = HW_CONFIG_NAME,
83 .mode = FOPEN_MODE_RB
84 },
85 #if TRUSTED_BOARD_BOOT
86 [TRUSTED_BOOT_FW_CERT_ID] = {
87 .path = TRUSTED_BOOT_FW_CERT_NAME,
88 .mode = FOPEN_MODE_RB
89 },
90 [TRUSTED_KEY_CERT_ID] = {
91 .path = TRUSTED_KEY_CERT_NAME,
92 .mode = FOPEN_MODE_RB
93 },
94 [SOC_FW_KEY_CERT_ID] = {
95 .path = SOC_FW_KEY_CERT_NAME,
96 .mode = FOPEN_MODE_RB
97 },
98 [TRUSTED_OS_FW_KEY_CERT_ID] = {
99 .path = TOS_FW_KEY_CERT_NAME,
100 .mode = FOPEN_MODE_RB
101 },
102 [NON_TRUSTED_FW_KEY_CERT_ID] = {
103 .path = NT_FW_KEY_CERT_NAME,
104 .mode = FOPEN_MODE_RB
105 },
106 [SOC_FW_CONTENT_CERT_ID] = {
107 .path = SOC_FW_CONTENT_CERT_NAME,
108 .mode = FOPEN_MODE_RB
109 },
110 [TRUSTED_OS_FW_CONTENT_CERT_ID] = {
111 .path = TOS_FW_CONTENT_CERT_NAME,
112 .mode = FOPEN_MODE_RB
113 },
114 [NON_TRUSTED_FW_CONTENT_CERT_ID] = {
115 .path = NT_FW_CONTENT_CERT_NAME,
116 .mode = FOPEN_MODE_RB
117 },
118 #endif /* TRUSTED_BOARD_BOOT */
119 };
120
121
open_semihosting(const uintptr_t spec)122 static int open_semihosting(const uintptr_t spec)
123 {
124 int result;
125 uintptr_t local_image_handle;
126
127 /* See if the file exists on semi-hosting.*/
128 result = io_dev_init(sh_dev_handle, (uintptr_t)NULL);
129 if (result == 0) {
130 result = io_open(sh_dev_handle, spec, &local_image_handle);
131 if (result == 0) {
132 VERBOSE("Using Semi-hosting IO\n");
133 io_close(local_image_handle);
134 }
135 }
136 return result;
137 }
138
plat_arm_io_setup(void)139 void plat_arm_io_setup(void)
140 {
141 int io_result;
142
143 io_result = arm_io_setup();
144 if (io_result < 0) {
145 panic();
146 }
147
148 /* Register the additional IO devices on this platform */
149 io_result = register_io_dev_sh(&sh_dev_con);
150 if (io_result < 0) {
151 panic();
152 }
153
154 /* Open connections to devices and cache the handles */
155 io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle);
156 if (io_result < 0) {
157 panic();
158 }
159 }
160
161 /*
162 * FVP provides semihosting as an alternative to load images
163 */
plat_arm_get_alt_image_source(unsigned int image_id,uintptr_t * dev_handle,uintptr_t * image_spec)164 int plat_arm_get_alt_image_source(unsigned int image_id, uintptr_t *dev_handle,
165 uintptr_t *image_spec)
166 {
167 int result = open_semihosting((const uintptr_t)&sh_file_spec[image_id]);
168 if (result == 0) {
169 *dev_handle = sh_dev_handle;
170 *image_spec = (uintptr_t)&sh_file_spec[image_id];
171 }
172
173 return result;
174 }
175