Simon Glass | bfe8fa2 | 2021-02-06 14:23:35 -0700 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright 2019 Google LLC |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <dm.h> |
| 8 | #include <log.h> |
| 9 | #include <tpm_api.h> |
| 10 | #include <tpm-v1.h> |
| 11 | #include <tpm-v2.h> |
| 12 | #include <tpm_api.h> |
| 13 | |
| 14 | static bool is_tpm1(struct udevice *dev) |
| 15 | { |
| 16 | return IS_ENABLED(CONFIG_TPM_V1) && tpm_get_version(dev) == TPM_V1; |
| 17 | } |
| 18 | |
| 19 | u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode) |
| 20 | { |
| 21 | if (is_tpm1(dev)) |
| 22 | return tpm1_startup(dev, mode); |
| 23 | else |
| 24 | return -ENOSYS; |
| 25 | } |
| 26 | |
| 27 | u32 tpm_resume(struct udevice *dev) |
| 28 | { |
| 29 | if (is_tpm1(dev)) |
| 30 | return tpm1_startup(dev, TPM_ST_STATE); |
| 31 | else |
| 32 | return -ENOSYS; |
| 33 | } |
| 34 | |
| 35 | u32 tpm_self_test_full(struct udevice *dev) |
| 36 | { |
| 37 | if (is_tpm1(dev)) |
| 38 | return tpm1_self_test_full(dev); |
| 39 | else |
| 40 | return -ENOSYS; |
| 41 | } |
| 42 | |
| 43 | u32 tpm_continue_self_test(struct udevice *dev) |
| 44 | { |
| 45 | if (is_tpm1(dev)) |
| 46 | return tpm1_continue_self_test(dev); |
| 47 | else |
| 48 | return -ENOSYS; |
| 49 | } |
| 50 | |
| 51 | u32 tpm_clear_and_reenable(struct udevice *dev) |
| 52 | { |
| 53 | u32 ret; |
| 54 | |
| 55 | log_info("TPM: Clear and re-enable\n"); |
| 56 | ret = tpm_force_clear(dev); |
| 57 | if (ret != TPM_SUCCESS) { |
| 58 | log_err("Can't initiate a force clear\n"); |
| 59 | return ret; |
| 60 | } |
| 61 | |
| 62 | if (is_tpm1(dev)) { |
| 63 | ret = tpm1_physical_enable(dev); |
| 64 | if (ret != TPM_SUCCESS) { |
| 65 | log_err("TPM: Can't set enabled state\n"); |
| 66 | return ret; |
| 67 | } |
| 68 | |
| 69 | ret = tpm1_physical_set_deactivated(dev, 0); |
| 70 | if (ret != TPM_SUCCESS) { |
| 71 | log_err("TPM: Can't set deactivated state\n"); |
| 72 | return ret; |
| 73 | } |
| 74 | } else { |
| 75 | return -ENOSYS; |
| 76 | } |
| 77 | |
| 78 | return TPM_SUCCESS; |
| 79 | } |
| 80 | |
| 81 | u32 tpm_nv_enable_locking(struct udevice *dev) |
| 82 | { |
| 83 | if (is_tpm1(dev)) |
| 84 | return tpm1_nv_define_space(dev, TPM_NV_INDEX_LOCK, 0, 0); |
| 85 | else |
| 86 | return -ENOSYS; |
| 87 | } |
| 88 | |
| 89 | u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count) |
| 90 | { |
| 91 | if (is_tpm1(dev)) |
| 92 | return tpm1_nv_read_value(dev, index, data, count); |
| 93 | else |
| 94 | return -ENOSYS; |
| 95 | } |
| 96 | |
| 97 | u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data, |
| 98 | u32 count) |
| 99 | { |
| 100 | if (is_tpm1(dev)) |
| 101 | return tpm1_nv_write_value(dev, index, data, count); |
| 102 | else |
| 103 | return -ENOSYS; |
| 104 | } |
| 105 | |
| 106 | u32 tpm_set_global_lock(struct udevice *dev) |
| 107 | { |
| 108 | return tpm_nv_write_value(dev, TPM_NV_INDEX_0, NULL, 0); |
| 109 | } |
| 110 | |
| 111 | u32 tpm_write_lock(struct udevice *dev, u32 index) |
| 112 | { |
| 113 | if (is_tpm1(dev)) |
| 114 | return -ENOSYS; |
| 115 | else |
| 116 | return -ENOSYS; |
| 117 | } |
| 118 | |
| 119 | u32 tpm_pcr_extend(struct udevice *dev, u32 index, const void *in_digest, |
| 120 | void *out_digest) |
| 121 | { |
| 122 | if (is_tpm1(dev)) |
| 123 | return tpm1_extend(dev, index, in_digest, out_digest); |
| 124 | else |
| 125 | return -ENOSYS; |
| 126 | } |
| 127 | |
| 128 | u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count) |
| 129 | { |
| 130 | if (is_tpm1(dev)) |
| 131 | return tpm1_pcr_read(dev, index, data, count); |
| 132 | else |
| 133 | return -ENOSYS; |
| 134 | } |
| 135 | |
| 136 | u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence) |
| 137 | { |
| 138 | if (is_tpm1(dev)) |
| 139 | return tpm1_tsc_physical_presence(dev, presence); |
| 140 | else |
| 141 | return -ENOSYS; |
| 142 | } |
| 143 | |
| 144 | u32 tpm_finalise_physical_presence(struct udevice *dev) |
| 145 | { |
| 146 | if (is_tpm1(dev)) |
| 147 | return tpm1_finalise_physical_presence(dev); |
| 148 | else |
| 149 | return -ENOSYS; |
| 150 | } |
| 151 | |
| 152 | u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count) |
| 153 | { |
| 154 | if (is_tpm1(dev)) |
| 155 | return tpm1_read_pubek(dev, data, count); |
| 156 | else |
| 157 | return -ENOSYS; /* not implemented yet */ |
| 158 | } |
| 159 | |
| 160 | u32 tpm_force_clear(struct udevice *dev) |
| 161 | { |
| 162 | if (is_tpm1(dev)) |
| 163 | return tpm1_force_clear(dev); |
| 164 | else |
| 165 | return -ENOSYS; |
| 166 | } |
| 167 | |
| 168 | u32 tpm_physical_enable(struct udevice *dev) |
| 169 | { |
| 170 | if (is_tpm1(dev)) |
| 171 | return tpm1_physical_enable(dev); |
| 172 | else |
| 173 | return -ENOSYS; |
| 174 | } |
| 175 | |
| 176 | u32 tpm_physical_disable(struct udevice *dev) |
| 177 | { |
| 178 | if (is_tpm1(dev)) |
| 179 | return tpm1_physical_disable(dev); |
| 180 | else |
| 181 | return -ENOSYS; |
| 182 | } |
| 183 | |
| 184 | u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state) |
| 185 | { |
| 186 | if (is_tpm1(dev)) |
| 187 | return tpm1_physical_set_deactivated(dev, state); |
| 188 | else |
| 189 | return -ENOSYS; |
| 190 | } |
| 191 | |
| 192 | u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap, |
| 193 | void *cap, size_t count) |
| 194 | { |
| 195 | if (is_tpm1(dev)) |
| 196 | return tpm1_get_capability(dev, cap_area, sub_cap, cap, count); |
| 197 | else |
| 198 | return -ENOSYS; |
| 199 | } |
| 200 | |
| 201 | u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm) |
| 202 | { |
| 203 | if (is_tpm1(dev)) |
| 204 | return tpm1_get_permissions(dev, index, perm); |
| 205 | else |
| 206 | return -ENOSYS; /* not implemented yet */ |
| 207 | } |
| 208 | |
| 209 | u32 tpm_get_random(struct udevice *dev, void *data, u32 count) |
| 210 | { |
| 211 | if (is_tpm1(dev)) |
| 212 | return tpm1_get_random(dev, data, count); |
| 213 | else |
| 214 | return -ENOSYS; /* not implemented yet */ |
| 215 | } |