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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | // SPDX-License-Identifier: BSD-2-Clause /* * Copyright 2020 Broadcom. */ #include <tee.h> #include <broadcom/chimp.h> #include <linux/errno.h> #include <string.h> #ifdef CONFIG_CHIMP_OPTEE #define CHMIP_BOOT_UUID { 0x6272636D, 0x2019, 0x0716, \ { 0x42, 0x43, 0x4D, 0x5F, 0x53, 0x43, 0x48, 0x49 } } enum { TEE_CHIMP_FASTBOOT = 0, TEE_CHIMP_HEALTH_STATUS, TEE_CHIMP_HANDSHAKE_STATUS, } tee_chmip_cmd; struct bcm_chimp_data { struct udevice *tee; u32 session; } chimp_data; static int get_open_session(struct bcm_chimp_data *b_data) { const struct tee_optee_ta_uuid uuid = CHMIP_BOOT_UUID; struct tee_open_session_arg arg; struct udevice *tee = NULL; int rc; tee = tee_find_device(NULL, NULL, NULL, NULL); if (!tee) return -ENODEV; memset(&arg, 0, sizeof(arg)); tee_optee_ta_uuid_to_octets(arg.uuid, &uuid); rc = tee_open_session(tee, &arg, 0, NULL); if (rc < 0) return -ENODEV; b_data->tee = tee; b_data->session = arg.session; return 0; } static int init_arg(struct tee_invoke_arg *arg, u32 func) { if (get_open_session(&chimp_data)) return -EINVAL; memset(arg, 0, sizeof(struct tee_invoke_arg)); arg->func = func; arg->session = chimp_data.session; return 0; } int chimp_handshake_status_optee(u32 timeout, u32 *hs) { struct tee_invoke_arg arg; struct tee_param param[1]; int ret; ret = init_arg(&arg, TEE_CHIMP_HANDSHAKE_STATUS); if (ret < 0) return ret; param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INOUT; param[0].u.value.a = timeout; ret = tee_invoke_func(chimp_data.tee, &arg, ARRAY_SIZE(param), param); if (ret < 0) { printf("Handshake status command failed\n"); goto out; } switch (arg.ret) { case TEE_SUCCESS: *hs = param[0].u.value.a; ret = 0; break; default: ret = -EINVAL; break; } out: tee_close_session(chimp_data.tee, chimp_data.session); chimp_data.tee = NULL; return ret; } int chimp_health_status_optee(u32 *health) { struct tee_invoke_arg arg; struct tee_param param[1]; int ret; ret = init_arg(&arg, TEE_CHIMP_HEALTH_STATUS); if (ret < 0) return ret; param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_OUTPUT; ret = tee_invoke_func(chimp_data.tee, &arg, ARRAY_SIZE(param), param); if (ret < 0) { printf("Helath status command failed\n"); goto out; } switch (arg.ret) { case TEE_SUCCESS: *health = param[0].u.value.a; ret = 0; break; default: ret = -EINVAL; break; } out: tee_close_session(chimp_data.tee, chimp_data.session); chimp_data.tee = NULL; return ret; } int chimp_fastboot_optee(void) { struct tee_invoke_arg arg; int ret; ret = init_arg(&arg, TEE_CHIMP_FASTBOOT); if (ret < 0) return ret; ret = tee_invoke_func(chimp_data.tee, &arg, 0, NULL); if (ret < 0) { printf("Chimp boot_fail\n"); goto out; } switch (arg.ret) { case TEE_SUCCESS: ret = 0; break; default: ret = -EINVAL; break; } out: tee_close_session(chimp_data.tee, chimp_data.session); chimp_data.tee = NULL; return ret; } #else int chimp_handshake_status_optee(u32 timeout, u32 *status) { printf("ChiMP handshake status fail (OPTEE not enabled)\n"); return -EINVAL; } int chimp_health_status_optee(u32 *status) { printf("ChiMP health status fail (OPTEE not enabled)\n"); return -EINVAL; } int chimp_fastboot_optee(void) { printf("ChiMP secure boot fail (OPTEE not enabled)\n"); return -EINVAL; } #endif /* CONFIG_CHIMP_OPTEE */ |