Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2018, Linaro Limited |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <avb_verify.h> |
Igor Opaniuk | e9ee739 | 2018-07-17 14:33:26 +0300 | [diff] [blame] | 8 | #include <blk.h> |
Simon Glass | 1eb69ae | 2019-11-14 12:57:39 -0700 | [diff] [blame] | 9 | #include <cpu_func.h> |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 10 | #include <image.h> |
| 11 | #include <malloc.h> |
| 12 | #include <part.h> |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 13 | #include <tee.h> |
| 14 | #include <tee/optee_ta_avb.h> |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 15 | |
Eugeniu Rosca | 55d56d2 | 2018-08-14 02:43:06 +0200 | [diff] [blame] | 16 | static const unsigned char avb_root_pub[1032] = { |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 17 | 0x0, 0x0, 0x10, 0x0, 0x55, 0xd9, 0x4, 0xad, 0xd8, 0x4, |
| 18 | 0xaf, 0xe3, 0xd3, 0x84, 0x6c, 0x7e, 0xd, 0x89, 0x3d, 0xc2, |
| 19 | 0x8c, 0xd3, 0x12, 0x55, 0xe9, 0x62, 0xc9, 0xf1, 0xf, 0x5e, |
| 20 | 0xcc, 0x16, 0x72, 0xab, 0x44, 0x7c, 0x2c, 0x65, 0x4a, 0x94, |
| 21 | 0xb5, 0x16, 0x2b, 0x0, 0xbb, 0x6, 0xef, 0x13, 0x7, 0x53, |
| 22 | 0x4c, 0xf9, 0x64, 0xb9, 0x28, 0x7a, 0x1b, 0x84, 0x98, 0x88, |
| 23 | 0xd8, 0x67, 0xa4, 0x23, 0xf9, 0xa7, 0x4b, 0xdc, 0x4a, 0xf, |
| 24 | 0xf7, 0x3a, 0x18, 0xae, 0x54, 0xa8, 0x15, 0xfe, 0xb0, 0xad, |
| 25 | 0xac, 0x35, 0xda, 0x3b, 0xad, 0x27, 0xbc, 0xaf, 0xe8, 0xd3, |
| 26 | 0x2f, 0x37, 0x34, 0xd6, 0x51, 0x2b, 0x6c, 0x5a, 0x27, 0xd7, |
| 27 | 0x96, 0x6, 0xaf, 0x6b, 0xb8, 0x80, 0xca, 0xfa, 0x30, 0xb4, |
| 28 | 0xb1, 0x85, 0xb3, 0x4d, 0xaa, 0xaa, 0xc3, 0x16, 0x34, 0x1a, |
| 29 | 0xb8, 0xe7, 0xc7, 0xfa, 0xf9, 0x9, 0x77, 0xab, 0x97, 0x93, |
| 30 | 0xeb, 0x44, 0xae, 0xcf, 0x20, 0xbc, 0xf0, 0x80, 0x11, 0xdb, |
| 31 | 0x23, 0xc, 0x47, 0x71, 0xb9, 0x6d, 0xd6, 0x7b, 0x60, 0x47, |
| 32 | 0x87, 0x16, 0x56, 0x93, 0xb7, 0xc2, 0x2a, 0x9a, 0xb0, 0x4c, |
| 33 | 0x1, 0xc, 0x30, 0xd8, 0x93, 0x87, 0xf0, 0xed, 0x6e, 0x8b, |
| 34 | 0xbe, 0x30, 0x5b, 0xf6, 0xa6, 0xaf, 0xdd, 0x80, 0x7c, 0x45, |
| 35 | 0x5e, 0x8f, 0x91, 0x93, 0x5e, 0x44, 0xfe, 0xb8, 0x82, 0x7, |
| 36 | 0xee, 0x79, 0xca, 0xbf, 0x31, 0x73, 0x62, 0x58, 0xe3, 0xcd, |
| 37 | 0xc4, 0xbc, 0xc2, 0x11, 0x1d, 0xa1, 0x4a, 0xbf, 0xfe, 0x27, |
| 38 | 0x7d, 0xa1, 0xf6, 0x35, 0xa3, 0x5e, 0xca, 0xdc, 0x57, 0x2f, |
| 39 | 0x3e, 0xf0, 0xc9, 0x5d, 0x86, 0x6a, 0xf8, 0xaf, 0x66, 0xa7, |
| 40 | 0xed, 0xcd, 0xb8, 0xed, 0xa1, 0x5f, 0xba, 0x9b, 0x85, 0x1a, |
| 41 | 0xd5, 0x9, 0xae, 0x94, 0x4e, 0x3b, 0xcf, 0xcb, 0x5c, 0xc9, |
| 42 | 0x79, 0x80, 0xf7, 0xcc, 0xa6, 0x4a, 0xa8, 0x6a, 0xd8, 0xd3, |
| 43 | 0x31, 0x11, 0xf9, 0xf6, 0x2, 0x63, 0x2a, 0x1a, 0x2d, 0xd1, |
| 44 | 0x1a, 0x66, 0x1b, 0x16, 0x41, 0xbd, 0xbd, 0xf7, 0x4d, 0xc0, |
| 45 | 0x4a, 0xe5, 0x27, 0x49, 0x5f, 0x7f, 0x58, 0xe3, 0x27, 0x2d, |
| 46 | 0xe5, 0xc9, 0x66, 0xe, 0x52, 0x38, 0x16, 0x38, 0xfb, 0x16, |
| 47 | 0xeb, 0x53, 0x3f, 0xe6, 0xfd, 0xe9, 0xa2, 0x5e, 0x25, 0x59, |
| 48 | 0xd8, 0x79, 0x45, 0xff, 0x3, 0x4c, 0x26, 0xa2, 0x0, 0x5a, |
| 49 | 0x8e, 0xc2, 0x51, 0xa1, 0x15, 0xf9, 0x7b, 0xf4, 0x5c, 0x81, |
| 50 | 0x9b, 0x18, 0x47, 0x35, 0xd8, 0x2d, 0x5, 0xe9, 0xad, 0xf, |
| 51 | 0x35, 0x74, 0x15, 0xa3, 0x8e, 0x8b, 0xcc, 0x27, 0xda, 0x7c, |
| 52 | 0x5d, 0xe4, 0xfa, 0x4, 0xd3, 0x5, 0xb, 0xba, 0x3a, 0xb2, |
| 53 | 0x49, 0x45, 0x2f, 0x47, 0xc7, 0xd, 0x41, 0x3f, 0x97, 0x80, |
| 54 | 0x4d, 0x3f, 0xc1, 0xb5, 0xbb, 0x70, 0x5f, 0xa7, 0x37, 0xaf, |
| 55 | 0x48, 0x22, 0x12, 0x45, 0x2e, 0xf5, 0xf, 0x87, 0x92, 0xe2, |
| 56 | 0x84, 0x1, 0xf9, 0x12, 0xf, 0x14, 0x15, 0x24, 0xce, 0x89, |
| 57 | 0x99, 0xee, 0xb9, 0xc4, 0x17, 0x70, 0x70, 0x15, 0xea, 0xbe, |
| 58 | 0xc6, 0x6c, 0x1f, 0x62, 0xb3, 0xf4, 0x2d, 0x16, 0x87, 0xfb, |
| 59 | 0x56, 0x1e, 0x45, 0xab, 0xae, 0x32, 0xe4, 0x5e, 0x91, 0xed, |
| 60 | 0x53, 0x66, 0x5e, 0xbd, 0xed, 0xad, 0xe6, 0x12, 0x39, 0xd, |
| 61 | 0x83, 0xc9, 0xe8, 0x6b, 0x6c, 0x2d, 0xa5, 0xee, 0xc4, 0x5a, |
| 62 | 0x66, 0xae, 0x8c, 0x97, 0xd7, 0xd, 0x6c, 0x49, 0xc7, 0xf5, |
| 63 | 0xc4, 0x92, 0x31, 0x8b, 0x9, 0xee, 0x33, 0xda, 0xa9, 0x37, |
| 64 | 0xb6, 0x49, 0x18, 0xf8, 0xe, 0x60, 0x45, 0xc8, 0x33, 0x91, |
| 65 | 0xef, 0x20, 0x57, 0x10, 0xbe, 0x78, 0x2d, 0x83, 0x26, 0xd6, |
| 66 | 0xca, 0x61, 0xf9, 0x2f, 0xe0, 0xbf, 0x5, 0x30, 0x52, 0x5a, |
| 67 | 0x12, 0x1c, 0x0, 0xa7, 0x5d, 0xcc, 0x7c, 0x2e, 0xc5, 0x95, |
| 68 | 0x8b, 0xa3, 0x3b, 0xf0, 0x43, 0x2e, 0x5e, 0xdd, 0x0, 0xdb, |
| 69 | 0xd, 0xb3, 0x37, 0x99, 0xa9, 0xcd, 0x9c, 0xb7, 0x43, 0xf7, |
| 70 | 0x35, 0x44, 0x21, 0xc2, 0x82, 0x71, 0xab, 0x8d, 0xaa, 0xb4, |
| 71 | 0x41, 0x11, 0xec, 0x1e, 0x8d, 0xfc, 0x14, 0x82, 0x92, 0x4e, |
| 72 | 0x83, 0x6a, 0xa, 0x6b, 0x35, 0x5e, 0x5d, 0xe9, 0x5c, 0xcc, |
| 73 | 0x8c, 0xde, 0x39, 0xd1, 0x4a, 0x5b, 0x5f, 0x63, 0xa9, 0x64, |
| 74 | 0xe0, 0xa, 0xcb, 0xb, 0xb8, 0x5a, 0x7c, 0xc3, 0xb, 0xe6, |
| 75 | 0xbe, 0xfe, 0x8b, 0xf, 0x7d, 0x34, 0x8e, 0x2, 0x66, 0x74, |
| 76 | 0x1, 0x6c, 0xca, 0x76, 0xac, 0x7c, 0x67, 0x8, 0x2f, 0x3f, |
| 77 | 0x1a, 0xa6, 0x2c, 0x60, 0xb3, 0xff, 0xda, 0x8d, 0xb8, 0x12, |
| 78 | 0xc, 0x0, 0x7f, 0xcc, 0x50, 0xa1, 0x5c, 0x64, 0xa1, 0xe2, |
| 79 | 0x5f, 0x32, 0x65, 0xc9, 0x9c, 0xbe, 0xd6, 0xa, 0x13, 0x87, |
| 80 | 0x3c, 0x2a, 0x45, 0x47, 0xc, 0xca, 0x42, 0x82, 0xfa, 0x89, |
| 81 | 0x65, 0xe7, 0x89, 0xb4, 0x8f, 0xf7, 0x1e, 0xe6, 0x23, 0xa5, |
| 82 | 0xd0, 0x59, 0x37, 0x79, 0x92, 0xd7, 0xce, 0x3d, 0xfd, 0xe3, |
| 83 | 0xa1, 0xb, 0xcf, 0x6c, 0x85, 0xa0, 0x65, 0xf3, 0x5c, 0xc6, |
| 84 | 0x4a, 0x63, 0x5f, 0x6e, 0x3a, 0x3a, 0x2a, 0x8b, 0x6a, 0xb6, |
| 85 | 0x2f, 0xbb, 0xf8, 0xb2, 0x4b, 0x62, 0xbc, 0x1a, 0x91, 0x25, |
| 86 | 0x66, 0xe3, 0x69, 0xca, 0x60, 0x49, 0xb, 0xf6, 0x8a, 0xbe, |
| 87 | 0x3e, 0x76, 0x53, 0xc2, 0x7a, 0xa8, 0x4, 0x17, 0x75, 0xf1, |
| 88 | 0xf3, 0x3, 0x62, 0x1b, 0x85, 0xb2, 0xb0, 0xef, 0x80, 0x15, |
| 89 | 0xb6, 0xd4, 0x4e, 0xdf, 0x71, 0xac, 0xdb, 0x2a, 0x4, 0xd4, |
| 90 | 0xb4, 0x21, 0xba, 0x65, 0x56, 0x57, 0xe8, 0xfa, 0x84, 0xa2, |
| 91 | 0x7d, 0x13, 0xe, 0xaf, 0xd7, 0x9a, 0x58, 0x2a, 0xa3, 0x81, |
| 92 | 0x84, 0x8d, 0x9, 0xa0, 0x6a, 0xc1, 0xbb, 0xd9, 0xf5, 0x86, |
| 93 | 0xac, 0xbd, 0x75, 0x61, 0x9, 0xe6, 0x8c, 0x3d, 0x77, 0xb2, |
| 94 | 0xed, 0x30, 0x20, 0xe4, 0x0, 0x1d, 0x97, 0xe8, 0xbf, 0xc7, |
| 95 | 0x0, 0x1b, 0x21, 0xb1, 0x16, 0xe7, 0x41, 0x67, 0x2e, 0xec, |
| 96 | 0x38, 0xbc, 0xe5, 0x1b, 0xb4, 0x6, 0x23, 0x31, 0x71, 0x1c, |
| 97 | 0x49, 0xcd, 0x76, 0x4a, 0x76, 0x36, 0x8d, 0xa3, 0x89, 0x8b, |
| 98 | 0x4a, 0x7a, 0xf4, 0x87, 0xc8, 0x15, 0xf, 0x37, 0x39, 0xf6, |
| 99 | 0x6d, 0x80, 0x19, 0xef, 0x5c, 0xa8, 0x66, 0xce, 0x1b, 0x16, |
| 100 | 0x79, 0x21, 0xdf, 0xd7, 0x31, 0x30, 0xc4, 0x21, 0xdd, 0x34, |
| 101 | 0x5b, 0xd2, 0x1a, 0x2b, 0x3e, 0x5d, 0xf7, 0xea, 0xca, 0x5, |
| 102 | 0x8e, 0xb7, 0xcb, 0x49, 0x2e, 0xa0, 0xe3, 0xf4, 0xa7, 0x48, |
| 103 | 0x19, 0x10, 0x9c, 0x4, 0xa7, 0xf4, 0x28, 0x74, 0xc8, 0x6f, |
| 104 | 0x63, 0x20, 0x2b, 0x46, 0x24, 0x26, 0x19, 0x1d, 0xd1, 0x2c, |
| 105 | 0x31, 0x6d, 0x5a, 0x29, 0xa2, 0x6, 0xa6, 0xb2, 0x41, 0xcc, |
| 106 | 0xa, 0x27, 0x96, 0x9, 0x96, 0xac, 0x47, 0x65, 0x78, 0x68, |
| 107 | 0x51, 0x98, 0xd6, 0xd8, 0xa6, 0x2d, 0xa0, 0xcf, 0xec, 0xe2, |
| 108 | 0x74, 0xf2, 0x82, 0xe3, 0x97, 0xd9, 0x7e, 0xd4, 0xf8, 0xb, |
| 109 | 0x70, 0x43, 0x3d, 0xb1, 0x7b, 0x97, 0x80, 0xd6, 0xcb, 0xd7, |
| 110 | 0x19, 0xbc, 0x63, 0xb, 0xfd, 0x4d, 0x88, 0xfe, 0x67, 0xac, |
| 111 | 0xb8, 0xcc, 0x50, 0xb7, 0x68, 0xb3, 0x5b, 0xd6, 0x1e, 0x25, |
| 112 | 0xfc, 0x5f, 0x3c, 0x8d, 0xb1, 0x33, 0x7c, 0xb3, 0x49, 0x1, |
| 113 | 0x3f, 0x71, 0x55, 0xe, 0x51, 0xba, 0x61, 0x26, 0xfa, 0xea, |
| 114 | 0xe5, 0xb5, 0xe8, 0xaa, 0xcf, 0xcd, 0x96, 0x9f, 0xd6, 0xc1, |
| 115 | 0x5f, 0x53, 0x91, 0xad, 0x5, 0xde, 0x20, 0xe7, 0x51, 0xda, |
| 116 | 0x5b, 0x95, 0x67, 0xed, 0xf4, 0xee, 0x42, 0x65, 0x70, 0x13, |
| 117 | 0xb, 0x70, 0x14, 0x1c, 0xc9, 0xe0, 0x19, 0xca, 0x5f, 0xf5, |
| 118 | 0x1d, 0x70, 0x4b, 0x6c, 0x6, 0x74, 0xec, 0xb5, 0x2e, 0x77, |
| 119 | 0xe1, 0x74, 0xa1, 0xa3, 0x99, 0xa0, 0x85, 0x9e, 0xf1, 0xac, |
| 120 | 0xd8, 0x7e, |
| 121 | }; |
| 122 | |
| 123 | /** |
| 124 | * ============================================================================ |
Igor Opaniuk | 5d4fd87 | 2018-06-03 21:56:40 +0300 | [diff] [blame] | 125 | * Boot states support (GREEN, YELLOW, ORANGE, RED) and dm_verity |
| 126 | * ============================================================================ |
| 127 | */ |
| 128 | char *avb_set_state(AvbOps *ops, enum avb_boot_state boot_state) |
| 129 | { |
| 130 | struct AvbOpsData *data; |
| 131 | char *cmdline = NULL; |
| 132 | |
| 133 | if (!ops) |
| 134 | return NULL; |
| 135 | |
| 136 | data = (struct AvbOpsData *)ops->user_data; |
| 137 | if (!data) |
| 138 | return NULL; |
| 139 | |
| 140 | data->boot_state = boot_state; |
| 141 | switch (boot_state) { |
| 142 | case AVB_GREEN: |
| 143 | cmdline = "androidboot.verifiedbootstate=green"; |
| 144 | break; |
| 145 | case AVB_YELLOW: |
| 146 | cmdline = "androidboot.verifiedbootstate=yellow"; |
| 147 | break; |
| 148 | case AVB_ORANGE: |
| 149 | cmdline = "androidboot.verifiedbootstate=orange"; |
| 150 | case AVB_RED: |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | return cmdline; |
| 155 | } |
| 156 | |
| 157 | char *append_cmd_line(char *cmdline_orig, char *cmdline_new) |
| 158 | { |
| 159 | char *cmd_line; |
| 160 | |
| 161 | if (!cmdline_new) |
| 162 | return cmdline_orig; |
| 163 | |
| 164 | if (cmdline_orig) |
| 165 | cmd_line = cmdline_orig; |
| 166 | else |
| 167 | cmd_line = " "; |
| 168 | |
| 169 | cmd_line = avb_strdupv(cmd_line, " ", cmdline_new, NULL); |
| 170 | |
| 171 | return cmd_line; |
| 172 | } |
| 173 | |
| 174 | static int avb_find_dm_args(char **args, char *str) |
| 175 | { |
| 176 | int i; |
| 177 | |
| 178 | if (!str) |
| 179 | return -1; |
| 180 | |
Eugeniu Rosca | 2e2067b | 2018-08-14 02:43:04 +0200 | [diff] [blame] | 181 | for (i = 0; i < AVB_MAX_ARGS && args[i]; ++i) { |
Igor Opaniuk | 5d4fd87 | 2018-06-03 21:56:40 +0300 | [diff] [blame] | 182 | if (strstr(args[i], str)) |
| 183 | return i; |
| 184 | } |
| 185 | |
| 186 | return -1; |
| 187 | } |
| 188 | |
| 189 | static char *avb_set_enforce_option(const char *cmdline, const char *option) |
| 190 | { |
| 191 | char *cmdarg[AVB_MAX_ARGS]; |
| 192 | char *newargs = NULL; |
| 193 | int i = 0; |
| 194 | int total_args; |
| 195 | |
| 196 | memset(cmdarg, 0, sizeof(cmdarg)); |
| 197 | cmdarg[i++] = strtok((char *)cmdline, " "); |
| 198 | |
| 199 | do { |
| 200 | cmdarg[i] = strtok(NULL, " "); |
| 201 | if (!cmdarg[i]) |
| 202 | break; |
| 203 | |
| 204 | if (++i >= AVB_MAX_ARGS) { |
| 205 | printf("%s: Can't handle more then %d args\n", |
| 206 | __func__, i); |
| 207 | return NULL; |
| 208 | } |
| 209 | } while (true); |
| 210 | |
| 211 | total_args = i; |
| 212 | i = avb_find_dm_args(&cmdarg[0], VERITY_TABLE_OPT_LOGGING); |
| 213 | if (i >= 0) { |
| 214 | cmdarg[i] = (char *)option; |
| 215 | } else { |
| 216 | i = avb_find_dm_args(&cmdarg[0], VERITY_TABLE_OPT_RESTART); |
| 217 | if (i < 0) { |
| 218 | printf("%s: No verity options found\n", __func__); |
| 219 | return NULL; |
| 220 | } |
| 221 | |
| 222 | cmdarg[i] = (char *)option; |
| 223 | } |
| 224 | |
| 225 | for (i = 0; i <= total_args; i++) |
| 226 | newargs = append_cmd_line(newargs, cmdarg[i]); |
| 227 | |
| 228 | return newargs; |
| 229 | } |
| 230 | |
| 231 | char *avb_set_ignore_corruption(const char *cmdline) |
| 232 | { |
| 233 | char *newargs = NULL; |
| 234 | |
| 235 | newargs = avb_set_enforce_option(cmdline, VERITY_TABLE_OPT_LOGGING); |
| 236 | if (newargs) |
| 237 | newargs = append_cmd_line(newargs, |
| 238 | "androidboot.veritymode=eio"); |
| 239 | |
| 240 | return newargs; |
| 241 | } |
| 242 | |
| 243 | char *avb_set_enforce_verity(const char *cmdline) |
| 244 | { |
| 245 | char *newargs; |
| 246 | |
| 247 | newargs = avb_set_enforce_option(cmdline, VERITY_TABLE_OPT_RESTART); |
| 248 | if (newargs) |
| 249 | newargs = append_cmd_line(newargs, |
| 250 | "androidboot.veritymode=enforcing"); |
| 251 | return newargs; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * ============================================================================ |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 256 | * IO(mmc) auxiliary functions |
| 257 | * ============================================================================ |
| 258 | */ |
| 259 | static unsigned long mmc_read_and_flush(struct mmc_part *part, |
| 260 | lbaint_t start, |
| 261 | lbaint_t sectors, |
| 262 | void *buffer) |
| 263 | { |
| 264 | unsigned long blks; |
| 265 | void *tmp_buf; |
| 266 | size_t buf_size; |
| 267 | bool unaligned = is_buf_unaligned(buffer); |
| 268 | |
| 269 | if (start < part->info.start) { |
| 270 | printf("%s: partition start out of bounds\n", __func__); |
| 271 | return 0; |
| 272 | } |
| 273 | if ((start + sectors) > (part->info.start + part->info.size)) { |
| 274 | sectors = part->info.start + part->info.size - start; |
| 275 | printf("%s: read sector aligned to partition bounds (%ld)\n", |
| 276 | __func__, sectors); |
| 277 | } |
| 278 | |
| 279 | /* |
| 280 | * Reading fails on unaligned buffers, so we have to |
| 281 | * use aligned temporary buffer and then copy to destination |
| 282 | */ |
| 283 | |
| 284 | if (unaligned) { |
| 285 | printf("Handling unaligned read buffer..\n"); |
| 286 | tmp_buf = get_sector_buf(); |
| 287 | buf_size = get_sector_buf_size(); |
| 288 | if (sectors > buf_size / part->info.blksz) |
| 289 | sectors = buf_size / part->info.blksz; |
| 290 | } else { |
| 291 | tmp_buf = buffer; |
| 292 | } |
| 293 | |
Igor Opaniuk | e9ee739 | 2018-07-17 14:33:26 +0300 | [diff] [blame] | 294 | blks = blk_dread(part->mmc_blk, |
| 295 | start, sectors, tmp_buf); |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 296 | /* flush cache after read */ |
| 297 | flush_cache((ulong)tmp_buf, sectors * part->info.blksz); |
| 298 | |
| 299 | if (unaligned) |
| 300 | memcpy(buffer, tmp_buf, sectors * part->info.blksz); |
| 301 | |
| 302 | return blks; |
| 303 | } |
| 304 | |
| 305 | static unsigned long mmc_write(struct mmc_part *part, lbaint_t start, |
| 306 | lbaint_t sectors, void *buffer) |
| 307 | { |
| 308 | void *tmp_buf; |
| 309 | size_t buf_size; |
| 310 | bool unaligned = is_buf_unaligned(buffer); |
| 311 | |
| 312 | if (start < part->info.start) { |
| 313 | printf("%s: partition start out of bounds\n", __func__); |
| 314 | return 0; |
| 315 | } |
| 316 | if ((start + sectors) > (part->info.start + part->info.size)) { |
| 317 | sectors = part->info.start + part->info.size - start; |
| 318 | printf("%s: sector aligned to partition bounds (%ld)\n", |
| 319 | __func__, sectors); |
| 320 | } |
| 321 | if (unaligned) { |
| 322 | tmp_buf = get_sector_buf(); |
| 323 | buf_size = get_sector_buf_size(); |
| 324 | printf("Handling unaligned wrire buffer..\n"); |
| 325 | if (sectors > buf_size / part->info.blksz) |
| 326 | sectors = buf_size / part->info.blksz; |
| 327 | |
| 328 | memcpy(tmp_buf, buffer, sectors * part->info.blksz); |
| 329 | } else { |
| 330 | tmp_buf = buffer; |
| 331 | } |
| 332 | |
Igor Opaniuk | e9ee739 | 2018-07-17 14:33:26 +0300 | [diff] [blame] | 333 | return blk_dwrite(part->mmc_blk, |
| 334 | start, sectors, tmp_buf); |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | static struct mmc_part *get_partition(AvbOps *ops, const char *partition) |
| 338 | { |
| 339 | int ret; |
| 340 | u8 dev_num; |
| 341 | int part_num = 0; |
| 342 | struct mmc_part *part; |
| 343 | struct blk_desc *mmc_blk; |
| 344 | |
| 345 | part = malloc(sizeof(struct mmc_part)); |
| 346 | if (!part) |
| 347 | return NULL; |
| 348 | |
| 349 | dev_num = get_boot_device(ops); |
| 350 | part->mmc = find_mmc_device(dev_num); |
| 351 | if (!part->mmc) { |
| 352 | printf("No MMC device at slot %x\n", dev_num); |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 353 | goto err; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | if (mmc_init(part->mmc)) { |
| 357 | printf("MMC initialization failed\n"); |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 358 | goto err; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | ret = mmc_switch_part(part->mmc, part_num); |
| 362 | if (ret) |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 363 | goto err; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 364 | |
| 365 | mmc_blk = mmc_get_blk_desc(part->mmc); |
| 366 | if (!mmc_blk) { |
| 367 | printf("Error - failed to obtain block descriptor\n"); |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 368 | goto err; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | ret = part_get_info_by_name(mmc_blk, partition, &part->info); |
schspa | 0453411 | 2021-02-26 00:19:10 +0800 | [diff] [blame] | 372 | if (ret < 0) { |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 373 | printf("Can't find partition '%s'\n", partition); |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 374 | goto err; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | part->dev_num = dev_num; |
| 378 | part->mmc_blk = mmc_blk; |
| 379 | |
| 380 | return part; |
Eugeniu Rosca | 047bc5c | 2018-08-14 02:43:07 +0200 | [diff] [blame] | 381 | err: |
| 382 | free(part); |
| 383 | return NULL; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | static AvbIOResult mmc_byte_io(AvbOps *ops, |
| 387 | const char *partition, |
| 388 | s64 offset, |
| 389 | size_t num_bytes, |
| 390 | void *buffer, |
| 391 | size_t *out_num_read, |
| 392 | enum mmc_io_type io_type) |
| 393 | { |
| 394 | ulong ret; |
| 395 | struct mmc_part *part; |
| 396 | u64 start_offset, start_sector, sectors, residue; |
| 397 | u8 *tmp_buf; |
| 398 | size_t io_cnt = 0; |
| 399 | |
| 400 | if (!partition || !buffer || io_type > IO_WRITE) |
| 401 | return AVB_IO_RESULT_ERROR_IO; |
| 402 | |
| 403 | part = get_partition(ops, partition); |
| 404 | if (!part) |
| 405 | return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION; |
| 406 | |
Eugeniu Rosca | e1904f4 | 2018-08-14 02:43:09 +0200 | [diff] [blame] | 407 | if (!part->info.blksz) |
| 408 | return AVB_IO_RESULT_ERROR_IO; |
| 409 | |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 410 | start_offset = calc_offset(part, offset); |
| 411 | while (num_bytes) { |
| 412 | start_sector = start_offset / part->info.blksz; |
| 413 | sectors = num_bytes / part->info.blksz; |
| 414 | /* handle non block-aligned reads */ |
| 415 | if (start_offset % part->info.blksz || |
| 416 | num_bytes < part->info.blksz) { |
| 417 | tmp_buf = get_sector_buf(); |
| 418 | if (start_offset % part->info.blksz) { |
| 419 | residue = part->info.blksz - |
| 420 | (start_offset % part->info.blksz); |
| 421 | if (residue > num_bytes) |
| 422 | residue = num_bytes; |
| 423 | } else { |
| 424 | residue = num_bytes; |
| 425 | } |
| 426 | |
| 427 | if (io_type == IO_READ) { |
| 428 | ret = mmc_read_and_flush(part, |
| 429 | part->info.start + |
| 430 | start_sector, |
| 431 | 1, tmp_buf); |
| 432 | |
| 433 | if (ret != 1) { |
| 434 | printf("%s: read error (%ld, %lld)\n", |
| 435 | __func__, ret, start_sector); |
| 436 | return AVB_IO_RESULT_ERROR_IO; |
| 437 | } |
| 438 | /* |
| 439 | * if this is not aligned at sector start, |
| 440 | * we have to adjust the tmp buffer |
| 441 | */ |
| 442 | tmp_buf += (start_offset % part->info.blksz); |
| 443 | memcpy(buffer, (void *)tmp_buf, residue); |
| 444 | } else { |
| 445 | ret = mmc_read_and_flush(part, |
| 446 | part->info.start + |
| 447 | start_sector, |
| 448 | 1, tmp_buf); |
| 449 | |
| 450 | if (ret != 1) { |
| 451 | printf("%s: read error (%ld, %lld)\n", |
| 452 | __func__, ret, start_sector); |
| 453 | return AVB_IO_RESULT_ERROR_IO; |
| 454 | } |
| 455 | memcpy((void *)tmp_buf + |
| 456 | start_offset % part->info.blksz, |
| 457 | buffer, residue); |
| 458 | |
| 459 | ret = mmc_write(part, part->info.start + |
| 460 | start_sector, 1, tmp_buf); |
| 461 | if (ret != 1) { |
| 462 | printf("%s: write error (%ld, %lld)\n", |
| 463 | __func__, ret, start_sector); |
| 464 | return AVB_IO_RESULT_ERROR_IO; |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | io_cnt += residue; |
| 469 | buffer += residue; |
| 470 | start_offset += residue; |
| 471 | num_bytes -= residue; |
| 472 | continue; |
| 473 | } |
| 474 | |
| 475 | if (sectors) { |
| 476 | if (io_type == IO_READ) { |
| 477 | ret = mmc_read_and_flush(part, |
| 478 | part->info.start + |
| 479 | start_sector, |
| 480 | sectors, buffer); |
| 481 | } else { |
| 482 | ret = mmc_write(part, |
| 483 | part->info.start + |
| 484 | start_sector, |
| 485 | sectors, buffer); |
| 486 | } |
| 487 | |
| 488 | if (!ret) { |
| 489 | printf("%s: sector read error\n", __func__); |
| 490 | return AVB_IO_RESULT_ERROR_IO; |
| 491 | } |
| 492 | |
| 493 | io_cnt += ret * part->info.blksz; |
| 494 | buffer += ret * part->info.blksz; |
| 495 | start_offset += ret * part->info.blksz; |
| 496 | num_bytes -= ret * part->info.blksz; |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | /* Set counter for read operation */ |
| 501 | if (io_type == IO_READ && out_num_read) |
| 502 | *out_num_read = io_cnt; |
| 503 | |
| 504 | return AVB_IO_RESULT_OK; |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * ============================================================================ |
| 509 | * AVB 2.0 operations |
| 510 | * ============================================================================ |
| 511 | */ |
| 512 | |
| 513 | /** |
| 514 | * read_from_partition() - reads @num_bytes from @offset from partition |
| 515 | * identified by a string name |
| 516 | * |
| 517 | * @ops: contains AVB ops handlers |
| 518 | * @partition_name: partition name, NUL-terminated UTF-8 string |
| 519 | * @offset: offset from the beginning of partition |
| 520 | * @num_bytes: amount of bytes to read |
| 521 | * @buffer: destination buffer to store data |
| 522 | * @out_num_read: |
| 523 | * |
| 524 | * @return: |
| 525 | * AVB_IO_RESULT_OK, if partition was found and read operation succeed |
| 526 | * AVB_IO_RESULT_ERROR_IO, if i/o error occurred from the underlying i/o |
| 527 | * subsystem |
| 528 | * AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION, if there is no partition with |
| 529 | * the given name |
| 530 | */ |
| 531 | static AvbIOResult read_from_partition(AvbOps *ops, |
| 532 | const char *partition_name, |
| 533 | s64 offset_from_partition, |
| 534 | size_t num_bytes, |
| 535 | void *buffer, |
| 536 | size_t *out_num_read) |
| 537 | { |
| 538 | return mmc_byte_io(ops, partition_name, offset_from_partition, |
| 539 | num_bytes, buffer, out_num_read, IO_READ); |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * write_to_partition() - writes N bytes to a partition identified by a string |
| 544 | * name |
| 545 | * |
| 546 | * @ops: AvbOps, contains AVB ops handlers |
| 547 | * @partition_name: partition name |
| 548 | * @offset_from_partition: offset from the beginning of partition |
| 549 | * @num_bytes: amount of bytes to write |
| 550 | * @buf: data to write |
| 551 | * @out_num_read: |
| 552 | * |
| 553 | * @return: |
| 554 | * AVB_IO_RESULT_OK, if partition was found and read operation succeed |
| 555 | * AVB_IO_RESULT_ERROR_IO, if input/output error occurred |
| 556 | * AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION, if partition, specified in |
| 557 | * @partition_name was not found |
| 558 | */ |
| 559 | static AvbIOResult write_to_partition(AvbOps *ops, |
| 560 | const char *partition_name, |
| 561 | s64 offset_from_partition, |
| 562 | size_t num_bytes, |
| 563 | const void *buffer) |
| 564 | { |
| 565 | return mmc_byte_io(ops, partition_name, offset_from_partition, |
| 566 | num_bytes, (void *)buffer, NULL, IO_WRITE); |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * validate_vmbeta_public_key() - checks if the given public key used to sign |
| 571 | * the vbmeta partition is trusted |
| 572 | * |
| 573 | * @ops: AvbOps, contains AVB ops handlers |
| 574 | * @public_key_data: public key for verifying vbmeta partition signature |
| 575 | * @public_key_length: length of public key |
| 576 | * @public_key_metadata: |
| 577 | * @public_key_metadata_length: |
| 578 | * @out_key_is_trusted: |
| 579 | * |
| 580 | * @return: |
| 581 | * AVB_IO_RESULT_OK, if partition was found and read operation succeed |
| 582 | */ |
| 583 | static AvbIOResult validate_vbmeta_public_key(AvbOps *ops, |
| 584 | const u8 *public_key_data, |
| 585 | size_t public_key_length, |
| 586 | const u8 |
| 587 | *public_key_metadata, |
| 588 | size_t |
| 589 | public_key_metadata_length, |
| 590 | bool *out_key_is_trusted) |
| 591 | { |
| 592 | if (!public_key_length || !public_key_data || !out_key_is_trusted) |
| 593 | return AVB_IO_RESULT_ERROR_IO; |
| 594 | |
| 595 | *out_key_is_trusted = false; |
| 596 | if (public_key_length != sizeof(avb_root_pub)) |
| 597 | return AVB_IO_RESULT_ERROR_IO; |
| 598 | |
| 599 | if (memcmp(avb_root_pub, public_key_data, public_key_length) == 0) |
| 600 | *out_key_is_trusted = true; |
| 601 | |
| 602 | return AVB_IO_RESULT_OK; |
| 603 | } |
| 604 | |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 605 | #ifdef CONFIG_OPTEE_TA_AVB |
| 606 | static int get_open_session(struct AvbOpsData *ops_data) |
| 607 | { |
| 608 | struct udevice *tee = NULL; |
| 609 | |
| 610 | while (!ops_data->tee) { |
| 611 | const struct tee_optee_ta_uuid uuid = TA_AVB_UUID; |
| 612 | struct tee_open_session_arg arg; |
| 613 | int rc; |
| 614 | |
| 615 | tee = tee_find_device(tee, NULL, NULL, NULL); |
| 616 | if (!tee) |
| 617 | return -ENODEV; |
| 618 | |
| 619 | memset(&arg, 0, sizeof(arg)); |
| 620 | tee_optee_ta_uuid_to_octets(arg.uuid, &uuid); |
| 621 | rc = tee_open_session(tee, &arg, 0, NULL); |
| 622 | if (!rc) { |
| 623 | ops_data->tee = tee; |
| 624 | ops_data->session = arg.session; |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | static AvbIOResult invoke_func(struct AvbOpsData *ops_data, u32 func, |
| 632 | ulong num_param, struct tee_param *param) |
| 633 | { |
| 634 | struct tee_invoke_arg arg; |
| 635 | |
| 636 | if (get_open_session(ops_data)) |
| 637 | return AVB_IO_RESULT_ERROR_IO; |
| 638 | |
| 639 | memset(&arg, 0, sizeof(arg)); |
| 640 | arg.func = func; |
| 641 | arg.session = ops_data->session; |
| 642 | |
| 643 | if (tee_invoke_func(ops_data->tee, &arg, num_param, param)) |
| 644 | return AVB_IO_RESULT_ERROR_IO; |
| 645 | switch (arg.ret) { |
| 646 | case TEE_SUCCESS: |
| 647 | return AVB_IO_RESULT_OK; |
| 648 | case TEE_ERROR_OUT_OF_MEMORY: |
| 649 | return AVB_IO_RESULT_ERROR_OOM; |
Igor Opaniuk | fc1fe01 | 2019-04-09 15:38:14 +0200 | [diff] [blame] | 650 | case TEE_ERROR_STORAGE_NO_SPACE: |
| 651 | return AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE; |
| 652 | case TEE_ERROR_ITEM_NOT_FOUND: |
| 653 | return AVB_IO_RESULT_ERROR_NO_SUCH_VALUE; |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 654 | case TEE_ERROR_TARGET_DEAD: |
| 655 | /* |
| 656 | * The TA has paniced, close the session to reload the TA |
| 657 | * for the next request. |
| 658 | */ |
| 659 | tee_close_session(ops_data->tee, ops_data->session); |
| 660 | ops_data->tee = NULL; |
| 661 | return AVB_IO_RESULT_ERROR_IO; |
| 662 | default: |
| 663 | return AVB_IO_RESULT_ERROR_IO; |
| 664 | } |
| 665 | } |
| 666 | #endif |
| 667 | |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 668 | /** |
| 669 | * read_rollback_index() - gets the rollback index corresponding to the |
| 670 | * location of given by @out_rollback_index. |
| 671 | * |
| 672 | * @ops: contains AvbOps handlers |
| 673 | * @rollback_index_slot: |
| 674 | * @out_rollback_index: used to write a retrieved rollback index. |
| 675 | * |
| 676 | * @return |
| 677 | * AVB_IO_RESULT_OK, if the roolback index was retrieved |
| 678 | */ |
| 679 | static AvbIOResult read_rollback_index(AvbOps *ops, |
| 680 | size_t rollback_index_slot, |
| 681 | u64 *out_rollback_index) |
| 682 | { |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 683 | #ifndef CONFIG_OPTEE_TA_AVB |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 684 | /* For now we always return 0 as the stored rollback index. */ |
Igor Opaniuk | 5d4fd87 | 2018-06-03 21:56:40 +0300 | [diff] [blame] | 685 | printf("%s not supported yet\n", __func__); |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 686 | |
| 687 | if (out_rollback_index) |
| 688 | *out_rollback_index = 0; |
| 689 | |
| 690 | return AVB_IO_RESULT_OK; |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 691 | #else |
| 692 | AvbIOResult rc; |
| 693 | struct tee_param param[2]; |
| 694 | |
| 695 | if (rollback_index_slot >= TA_AVB_MAX_ROLLBACK_LOCATIONS) |
| 696 | return AVB_IO_RESULT_ERROR_NO_SUCH_VALUE; |
| 697 | |
| 698 | memset(param, 0, sizeof(param)); |
| 699 | param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT; |
| 700 | param[0].u.value.a = rollback_index_slot; |
| 701 | param[1].attr = TEE_PARAM_ATTR_TYPE_VALUE_OUTPUT; |
| 702 | |
| 703 | rc = invoke_func(ops->user_data, TA_AVB_CMD_READ_ROLLBACK_INDEX, |
| 704 | ARRAY_SIZE(param), param); |
| 705 | if (rc) |
| 706 | return rc; |
| 707 | |
| 708 | *out_rollback_index = (u64)param[1].u.value.a << 32 | |
| 709 | (u32)param[1].u.value.b; |
| 710 | return AVB_IO_RESULT_OK; |
| 711 | #endif |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | /** |
| 715 | * write_rollback_index() - sets the rollback index corresponding to the |
| 716 | * location of given by @out_rollback_index. |
| 717 | * |
| 718 | * @ops: contains AvbOps handlers |
| 719 | * @rollback_index_slot: |
| 720 | * @rollback_index: rollback index to write. |
| 721 | * |
| 722 | * @return |
| 723 | * AVB_IO_RESULT_OK, if the roolback index was retrieved |
| 724 | */ |
| 725 | static AvbIOResult write_rollback_index(AvbOps *ops, |
| 726 | size_t rollback_index_slot, |
| 727 | u64 rollback_index) |
| 728 | { |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 729 | #ifndef CONFIG_OPTEE_TA_AVB |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 730 | /* For now this is a no-op. */ |
Igor Opaniuk | 5d4fd87 | 2018-06-03 21:56:40 +0300 | [diff] [blame] | 731 | printf("%s not supported yet\n", __func__); |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 732 | |
| 733 | return AVB_IO_RESULT_OK; |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 734 | #else |
| 735 | struct tee_param param[2]; |
| 736 | |
| 737 | if (rollback_index_slot >= TA_AVB_MAX_ROLLBACK_LOCATIONS) |
| 738 | return AVB_IO_RESULT_ERROR_NO_SUCH_VALUE; |
| 739 | |
| 740 | memset(param, 0, sizeof(param)); |
| 741 | param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT; |
| 742 | param[0].u.value.a = rollback_index_slot; |
| 743 | param[1].attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT; |
| 744 | param[1].u.value.a = (u32)(rollback_index >> 32); |
| 745 | param[1].u.value.b = (u32)rollback_index; |
| 746 | |
| 747 | return invoke_func(ops->user_data, TA_AVB_CMD_WRITE_ROLLBACK_INDEX, |
| 748 | ARRAY_SIZE(param), param); |
| 749 | #endif |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | /** |
| 753 | * read_is_device_unlocked() - gets whether the device is unlocked |
| 754 | * |
| 755 | * @ops: contains AVB ops handlers |
| 756 | * @out_is_unlocked: device unlock state is stored here, true if unlocked, |
| 757 | * false otherwise |
| 758 | * |
| 759 | * @return: |
| 760 | * AVB_IO_RESULT_OK: state is retrieved successfully |
| 761 | * AVB_IO_RESULT_ERROR_IO: an error occurred |
| 762 | */ |
| 763 | static AvbIOResult read_is_device_unlocked(AvbOps *ops, bool *out_is_unlocked) |
| 764 | { |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 765 | #ifndef CONFIG_OPTEE_TA_AVB |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 766 | /* For now we always return that the device is unlocked. */ |
| 767 | |
Igor Opaniuk | 5d4fd87 | 2018-06-03 21:56:40 +0300 | [diff] [blame] | 768 | printf("%s not supported yet\n", __func__); |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 769 | |
| 770 | *out_is_unlocked = true; |
| 771 | |
| 772 | return AVB_IO_RESULT_OK; |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 773 | #else |
| 774 | AvbIOResult rc; |
| 775 | struct tee_param param = { .attr = TEE_PARAM_ATTR_TYPE_VALUE_OUTPUT }; |
| 776 | |
| 777 | rc = invoke_func(ops->user_data, TA_AVB_CMD_READ_LOCK_STATE, 1, ¶m); |
| 778 | if (rc) |
| 779 | return rc; |
| 780 | *out_is_unlocked = !param.u.value.a; |
| 781 | return AVB_IO_RESULT_OK; |
| 782 | #endif |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | /** |
| 786 | * get_unique_guid_for_partition() - gets the GUID for a partition identified |
| 787 | * by a string name |
| 788 | * |
| 789 | * @ops: contains AVB ops handlers |
| 790 | * @partition: partition name (NUL-terminated UTF-8 string) |
| 791 | * @guid_buf: buf, used to copy in GUID string. Example of value: |
| 792 | * 527c1c6d-6361-4593-8842-3c78fcd39219 |
| 793 | * @guid_buf_size: @guid_buf buffer size |
| 794 | * |
| 795 | * @return: |
| 796 | * AVB_IO_RESULT_OK, on success (GUID found) |
| 797 | * AVB_IO_RESULT_ERROR_IO, if incorrect buffer size (@guid_buf_size) was |
| 798 | * provided |
| 799 | * AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION, if partition was not found |
| 800 | */ |
| 801 | static AvbIOResult get_unique_guid_for_partition(AvbOps *ops, |
| 802 | const char *partition, |
| 803 | char *guid_buf, |
| 804 | size_t guid_buf_size) |
| 805 | { |
| 806 | struct mmc_part *part; |
| 807 | size_t uuid_size; |
| 808 | |
| 809 | part = get_partition(ops, partition); |
| 810 | if (!part) |
| 811 | return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION; |
| 812 | |
| 813 | uuid_size = sizeof(part->info.uuid); |
| 814 | if (uuid_size > guid_buf_size) |
| 815 | return AVB_IO_RESULT_ERROR_IO; |
| 816 | |
| 817 | memcpy(guid_buf, part->info.uuid, uuid_size); |
| 818 | guid_buf[uuid_size - 1] = 0; |
| 819 | |
| 820 | return AVB_IO_RESULT_OK; |
| 821 | } |
| 822 | |
| 823 | /** |
Igor Opaniuk | 7a5fbfe | 2018-08-10 16:59:59 +0300 | [diff] [blame] | 824 | * get_size_of_partition() - gets the size of a partition identified |
| 825 | * by a string name |
| 826 | * |
| 827 | * @ops: contains AVB ops handlers |
| 828 | * @partition: partition name (NUL-terminated UTF-8 string) |
| 829 | * @out_size_num_bytes: returns the value of a partition size |
| 830 | * |
| 831 | * @return: |
| 832 | * AVB_IO_RESULT_OK, on success (GUID found) |
| 833 | * AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE, out_size_num_bytes is NULL |
| 834 | * AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION, if partition was not found |
| 835 | */ |
| 836 | static AvbIOResult get_size_of_partition(AvbOps *ops, |
| 837 | const char *partition, |
| 838 | u64 *out_size_num_bytes) |
| 839 | { |
| 840 | struct mmc_part *part; |
| 841 | |
| 842 | if (!out_size_num_bytes) |
| 843 | return AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE; |
| 844 | |
| 845 | part = get_partition(ops, partition); |
| 846 | if (!part) |
| 847 | return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION; |
| 848 | |
| 849 | *out_size_num_bytes = part->info.blksz * part->info.size; |
| 850 | |
| 851 | return AVB_IO_RESULT_OK; |
| 852 | } |
| 853 | |
Sam Protsenko | f254bd0 | 2019-07-31 19:59:08 +0300 | [diff] [blame] | 854 | #ifdef CONFIG_OPTEE_TA_AVB |
Igor Opaniuk | fc1fe01 | 2019-04-09 15:38:14 +0200 | [diff] [blame] | 855 | static AvbIOResult read_persistent_value(AvbOps *ops, |
| 856 | const char *name, |
| 857 | size_t buffer_size, |
| 858 | u8 *out_buffer, |
| 859 | size_t *out_num_bytes_read) |
| 860 | { |
| 861 | AvbIOResult rc; |
| 862 | struct tee_shm *shm_name; |
| 863 | struct tee_shm *shm_buf; |
| 864 | struct tee_param param[2]; |
| 865 | struct udevice *tee; |
| 866 | size_t name_size = strlen(name) + 1; |
| 867 | |
| 868 | if (get_open_session(ops->user_data)) |
| 869 | return AVB_IO_RESULT_ERROR_IO; |
| 870 | |
| 871 | tee = ((struct AvbOpsData *)ops->user_data)->tee; |
| 872 | |
| 873 | rc = tee_shm_alloc(tee, name_size, |
| 874 | TEE_SHM_ALLOC, &shm_name); |
| 875 | if (rc) |
| 876 | return AVB_IO_RESULT_ERROR_OOM; |
| 877 | |
| 878 | rc = tee_shm_alloc(tee, buffer_size, |
| 879 | TEE_SHM_ALLOC, &shm_buf); |
| 880 | if (rc) { |
| 881 | rc = AVB_IO_RESULT_ERROR_OOM; |
| 882 | goto free_name; |
| 883 | } |
| 884 | |
| 885 | memcpy(shm_name->addr, name, name_size); |
| 886 | |
| 887 | memset(param, 0, sizeof(param)); |
| 888 | param[0].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; |
| 889 | param[0].u.memref.shm = shm_name; |
| 890 | param[0].u.memref.size = name_size; |
| 891 | param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INOUT; |
| 892 | param[1].u.memref.shm = shm_buf; |
| 893 | param[1].u.memref.size = buffer_size; |
| 894 | |
| 895 | rc = invoke_func(ops->user_data, TA_AVB_CMD_READ_PERSIST_VALUE, |
| 896 | 2, param); |
| 897 | if (rc) |
| 898 | goto out; |
| 899 | |
| 900 | if (param[1].u.memref.size > buffer_size) { |
| 901 | rc = AVB_IO_RESULT_ERROR_NO_SUCH_VALUE; |
| 902 | goto out; |
| 903 | } |
| 904 | |
| 905 | *out_num_bytes_read = param[1].u.memref.size; |
| 906 | |
| 907 | memcpy(out_buffer, shm_buf->addr, *out_num_bytes_read); |
| 908 | |
| 909 | out: |
| 910 | tee_shm_free(shm_buf); |
| 911 | free_name: |
| 912 | tee_shm_free(shm_name); |
| 913 | |
| 914 | return rc; |
| 915 | } |
| 916 | |
| 917 | static AvbIOResult write_persistent_value(AvbOps *ops, |
| 918 | const char *name, |
| 919 | size_t value_size, |
| 920 | const u8 *value) |
| 921 | { |
| 922 | AvbIOResult rc; |
| 923 | struct tee_shm *shm_name; |
| 924 | struct tee_shm *shm_buf; |
| 925 | struct tee_param param[2]; |
| 926 | struct udevice *tee; |
| 927 | size_t name_size = strlen(name) + 1; |
| 928 | |
| 929 | if (get_open_session(ops->user_data)) |
| 930 | return AVB_IO_RESULT_ERROR_IO; |
| 931 | |
| 932 | tee = ((struct AvbOpsData *)ops->user_data)->tee; |
| 933 | |
| 934 | if (!value_size) |
| 935 | return AVB_IO_RESULT_ERROR_NO_SUCH_VALUE; |
| 936 | |
| 937 | rc = tee_shm_alloc(tee, name_size, |
| 938 | TEE_SHM_ALLOC, &shm_name); |
| 939 | if (rc) |
| 940 | return AVB_IO_RESULT_ERROR_OOM; |
| 941 | |
| 942 | rc = tee_shm_alloc(tee, value_size, |
| 943 | TEE_SHM_ALLOC, &shm_buf); |
| 944 | if (rc) { |
| 945 | rc = AVB_IO_RESULT_ERROR_OOM; |
| 946 | goto free_name; |
| 947 | } |
| 948 | |
| 949 | memcpy(shm_name->addr, name, name_size); |
| 950 | memcpy(shm_buf->addr, value, value_size); |
| 951 | |
| 952 | memset(param, 0, sizeof(param)); |
| 953 | param[0].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; |
| 954 | param[0].u.memref.shm = shm_name; |
| 955 | param[0].u.memref.size = name_size; |
| 956 | param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; |
| 957 | param[1].u.memref.shm = shm_buf; |
| 958 | param[1].u.memref.size = value_size; |
| 959 | |
| 960 | rc = invoke_func(ops->user_data, TA_AVB_CMD_WRITE_PERSIST_VALUE, |
| 961 | 2, param); |
| 962 | if (rc) |
| 963 | goto out; |
| 964 | |
| 965 | out: |
| 966 | tee_shm_free(shm_buf); |
| 967 | free_name: |
| 968 | tee_shm_free(shm_name); |
| 969 | |
| 970 | return rc; |
| 971 | } |
Sam Protsenko | f254bd0 | 2019-07-31 19:59:08 +0300 | [diff] [blame] | 972 | #endif |
| 973 | |
Igor Opaniuk | 7a5fbfe | 2018-08-10 16:59:59 +0300 | [diff] [blame] | 974 | /** |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 975 | * ============================================================================ |
| 976 | * AVB2.0 AvbOps alloc/initialisation/free |
| 977 | * ============================================================================ |
| 978 | */ |
| 979 | AvbOps *avb_ops_alloc(int boot_device) |
| 980 | { |
| 981 | struct AvbOpsData *ops_data; |
| 982 | |
| 983 | ops_data = avb_calloc(sizeof(struct AvbOpsData)); |
| 984 | if (!ops_data) |
| 985 | return NULL; |
| 986 | |
| 987 | ops_data->ops.user_data = ops_data; |
| 988 | |
| 989 | ops_data->ops.read_from_partition = read_from_partition; |
| 990 | ops_data->ops.write_to_partition = write_to_partition; |
| 991 | ops_data->ops.validate_vbmeta_public_key = validate_vbmeta_public_key; |
| 992 | ops_data->ops.read_rollback_index = read_rollback_index; |
| 993 | ops_data->ops.write_rollback_index = write_rollback_index; |
| 994 | ops_data->ops.read_is_device_unlocked = read_is_device_unlocked; |
| 995 | ops_data->ops.get_unique_guid_for_partition = |
| 996 | get_unique_guid_for_partition; |
Igor Opaniuk | fc1fe01 | 2019-04-09 15:38:14 +0200 | [diff] [blame] | 997 | #ifdef CONFIG_OPTEE_TA_AVB |
| 998 | ops_data->ops.write_persistent_value = write_persistent_value; |
| 999 | ops_data->ops.read_persistent_value = read_persistent_value; |
| 1000 | #endif |
Igor Opaniuk | 7a5fbfe | 2018-08-10 16:59:59 +0300 | [diff] [blame] | 1001 | ops_data->ops.get_size_of_partition = get_size_of_partition; |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 1002 | ops_data->mmc_dev = boot_device; |
| 1003 | |
| 1004 | return &ops_data->ops; |
| 1005 | } |
| 1006 | |
| 1007 | void avb_ops_free(AvbOps *ops) |
| 1008 | { |
| 1009 | struct AvbOpsData *ops_data; |
| 1010 | |
Eugeniu Rosca | 47e4163 | 2018-08-14 02:43:08 +0200 | [diff] [blame] | 1011 | if (!ops) |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 1012 | return; |
| 1013 | |
| 1014 | ops_data = ops->user_data; |
| 1015 | |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 1016 | if (ops_data) { |
| 1017 | #ifdef CONFIG_OPTEE_TA_AVB |
| 1018 | if (ops_data->tee) |
| 1019 | tee_close_session(ops_data->tee, ops_data->session); |
| 1020 | #endif |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 1021 | avb_free(ops_data); |
Jens Wiklander | 6663e07 | 2018-09-25 16:40:20 +0200 | [diff] [blame] | 1022 | } |
Igor Opaniuk | 3af30e4 | 2018-06-03 21:56:38 +0300 | [diff] [blame] | 1023 | } |