Patrick Georgi | ea063cb | 2020-05-08 19:28:13 +0200 | [diff] [blame] | 1 | /* ifwitool, CLI utility for IFWI manipulation */ |
Patrick Georgi | 7333a11 | 2020-05-08 20:48:04 +0200 | [diff] [blame] | 2 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 3 | |
| 4 | #include <commonlib/endian.h> |
| 5 | #include <getopt.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <time.h> |
| 8 | |
| 9 | #include "common.h" |
| 10 | |
| 11 | /* |
| 12 | * BPDT is Boot Partition Descriptor Table. It is located at the start of a |
| 13 | * logical boot partition(LBP). It stores information about the critical |
| 14 | * sub-partitions present within the LBP. |
| 15 | * |
| 16 | * S-BPDT is Secondary Boot Partition Descriptor Table. It is located after the |
| 17 | * critical sub-partitions and contains information about the non-critical |
| 18 | * sub-partitions present within the LBP. |
| 19 | * |
| 20 | * Both tables are identified by BPDT_SIGNATURE stored at the start of the |
| 21 | * table. |
| 22 | */ |
| 23 | #define BPDT_SIGNATURE (0x000055AA) |
| 24 | |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 25 | #define LBP1 (0) |
| 26 | #define LBP2 (1) |
| 27 | |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 28 | /* Parameters passed in by caller. */ |
| 29 | static struct param { |
| 30 | const char *file_name; |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 31 | size_t logical_boot_partition; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 32 | const char *subpart_name; |
| 33 | const char *image_name; |
| 34 | bool dir_ops; |
| 35 | const char *dentry_name; |
| 36 | } param; |
| 37 | |
| 38 | struct bpdt_header { |
| 39 | /* |
| 40 | * This is used to identify start of BPDT. It should always be |
| 41 | * BPDT_SIGNATURE. |
| 42 | */ |
| 43 | uint32_t signature; |
| 44 | /* Count of BPDT entries present. */ |
| 45 | uint16_t descriptor_count; |
| 46 | /* Version - Currently supported = 1. */ |
| 47 | uint16_t bpdt_version; |
| 48 | /* Unused - Should be 0. */ |
| 49 | uint32_t xor_redundant_block; |
| 50 | /* Version of IFWI build. */ |
| 51 | uint32_t ifwi_version; |
| 52 | /* Version of FIT tool used to create IFWI. */ |
| 53 | uint64_t fit_tool_version; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 54 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 55 | #define BPDT_HEADER_SIZE (sizeof(struct bpdt_header)) |
| 56 | |
| 57 | struct bpdt_entry { |
| 58 | /* Type of sub-partition. */ |
| 59 | uint16_t type; |
| 60 | /* Attributes of sub-partition. */ |
| 61 | uint16_t flags; |
| 62 | /* Offset of sub-partition from beginning of LBP. */ |
| 63 | uint32_t offset; |
| 64 | /* Size in bytes of sub-partition. */ |
| 65 | uint32_t size; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 66 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 67 | #define BPDT_ENTRY_SIZE (sizeof(struct bpdt_entry)) |
| 68 | |
| 69 | struct bpdt { |
| 70 | struct bpdt_header h; |
| 71 | /* In practice, this could be an array of 0 to n entries. */ |
| 72 | struct bpdt_entry e[0]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 73 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 74 | |
Werner Zeh | 310580e | 2016-06-24 13:03:38 +0200 | [diff] [blame] | 75 | static inline size_t get_bpdt_size(struct bpdt_header *h) |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 76 | { |
| 77 | return (sizeof(*h) + BPDT_ENTRY_SIZE * h->descriptor_count); |
| 78 | } |
| 79 | |
| 80 | /* Minimum size in bytes allocated to BPDT in IFWI. */ |
| 81 | #define BPDT_MIN_SIZE (512) |
| 82 | |
| 83 | /* Header to define directory header for sub-partition. */ |
| 84 | struct subpart_dir_header { |
| 85 | /* Should be SUBPART_DIR_MARKER. */ |
| 86 | uint32_t marker; |
| 87 | /* Number of directory entries in the sub-partition. */ |
| 88 | uint32_t num_entries; |
| 89 | /* Currenty supported - 1. */ |
| 90 | uint8_t header_version; |
| 91 | /* Currenty supported - 1. */ |
| 92 | uint8_t entry_version; |
| 93 | /* Length of directory header in bytes. */ |
| 94 | uint8_t header_length; |
| 95 | /* |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 96 | * 2s complement of 8-bit sum from first byte of header to last byte of |
| 97 | * last directory entry. |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 98 | */ |
| 99 | uint8_t checksum; |
| 100 | /* ASCII short name of sub-partition. */ |
| 101 | uint8_t name[4]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 102 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 103 | #define SUBPART_DIR_HEADER_SIZE \ |
| 104 | (sizeof(struct subpart_dir_header)) |
| 105 | #define SUBPART_DIR_MARKER 0x44504324 |
| 106 | #define SUBPART_DIR_HEADER_VERSION_SUPPORTED 1 |
| 107 | #define SUBPART_DIR_ENTRY_VERSION_SUPPORTED 1 |
| 108 | |
| 109 | /* Structure for each directory entry for sub-partition. */ |
| 110 | struct subpart_dir_entry { |
| 111 | /* Name of directory entry - Not guaranteed to be NULL-terminated. */ |
| 112 | uint8_t name[12]; |
| 113 | /* Offset of entry from beginning of sub-partition. */ |
| 114 | uint32_t offset; |
| 115 | /* Length in bytes of sub-directory entry. */ |
| 116 | uint32_t length; |
| 117 | /* Must be zero. */ |
| 118 | uint32_t rsvd; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 119 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 120 | #define SUBPART_DIR_ENTRY_SIZE \ |
| 121 | (sizeof(struct subpart_dir_entry)) |
| 122 | |
| 123 | struct subpart_dir { |
| 124 | struct subpart_dir_header h; |
| 125 | /* In practice, this could be an array of 0 to n entries. */ |
| 126 | struct subpart_dir_entry e[0]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 127 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 128 | |
| 129 | static inline size_t subpart_dir_size(struct subpart_dir_header *h) |
| 130 | { |
| 131 | return (sizeof(*h) + SUBPART_DIR_ENTRY_SIZE * h->num_entries); |
| 132 | } |
| 133 | |
| 134 | struct manifest_header { |
| 135 | uint32_t header_type; |
| 136 | uint32_t header_length; |
| 137 | uint32_t header_version; |
| 138 | uint32_t flags; |
| 139 | uint32_t vendor; |
| 140 | uint32_t date; |
| 141 | uint32_t size; |
| 142 | uint32_t id; |
| 143 | uint32_t rsvd; |
| 144 | uint64_t version; |
| 145 | uint32_t svn; |
| 146 | uint64_t rsvd1; |
| 147 | uint8_t rsvd2[64]; |
| 148 | uint32_t modulus_size; |
| 149 | uint32_t exponent_size; |
| 150 | uint8_t public_key[256]; |
| 151 | uint32_t exponent; |
| 152 | uint8_t signature[256]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 153 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 154 | |
| 155 | #define DWORD_SIZE 4 |
| 156 | #define MANIFEST_HDR_SIZE (sizeof(struct manifest_header)) |
| 157 | #define MANIFEST_ID_MAGIC (0x324e4d24) |
| 158 | |
| 159 | struct module { |
| 160 | uint8_t name[12]; |
| 161 | uint8_t type; |
| 162 | uint8_t hash_alg; |
| 163 | uint16_t hash_size; |
| 164 | uint32_t metadata_size; |
| 165 | uint8_t metadata_hash[32]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 166 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 167 | |
| 168 | #define MODULE_SIZE (sizeof(struct module)) |
| 169 | |
| 170 | struct signed_pkg_info_ext { |
| 171 | uint32_t ext_type; |
| 172 | uint32_t ext_length; |
| 173 | uint8_t name[4]; |
| 174 | uint32_t vcn; |
| 175 | uint8_t bitmap[16]; |
| 176 | uint32_t svn; |
| 177 | uint8_t rsvd[16]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 178 | } __packed; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 179 | |
| 180 | #define SIGNED_PKG_INFO_EXT_TYPE 0x15 |
| 181 | #define SIGNED_PKG_INFO_EXT_SIZE \ |
| 182 | (sizeof(struct signed_pkg_info_ext)) |
| 183 | |
| 184 | /* |
| 185 | * Attributes for various IFWI sub-partitions. |
| 186 | * LIES_WITHIN_BPDT_4K = Sub-Partition should lie within the same 4K block as |
| 187 | * BPDT. |
| 188 | * NON_CRITICAL_SUBPART = Sub-Partition entry should be present in S-BPDT. |
| 189 | * CONTAINS_DIR = Sub-Partition contains directory. |
| 190 | * AUTO_GENERATED = Sub-Partition is generated by the tool. |
| 191 | * MANDATORY_BPDT_ENTRY = Even if sub-partition is deleted, BPDT should contain |
| 192 | * an entry for it with size 0 and offset 0. |
| 193 | */ |
| 194 | enum subpart_attributes { |
| 195 | LIES_WITHIN_BPDT_4K = (1 << 0), |
| 196 | NON_CRITICAL_SUBPART = (1 << 1), |
| 197 | CONTAINS_DIR = (1 << 2), |
| 198 | AUTO_GENERATED = (1 << 3), |
| 199 | MANDATORY_BPDT_ENTRY = (1 << 4), |
| 200 | }; |
| 201 | |
| 202 | /* Type value for various IFWI sub-partitions. */ |
| 203 | enum bpdt_entry_type { |
| 204 | SMIP_TYPE = 0, |
| 205 | CSE_RBE_TYPE = 1, |
| 206 | CSE_BUP_TYPE = 2, |
| 207 | UCODE_TYPE = 3, |
| 208 | IBB_TYPE = 4, |
| 209 | S_BPDT_TYPE = 5, |
| 210 | OBB_TYPE = 6, |
| 211 | CSE_MAIN_TYPE = 7, |
| 212 | ISH_TYPE = 8, |
| 213 | CSE_IDLM_TYPE = 9, |
| 214 | IFP_OVERRIDE_TYPE = 10, |
| 215 | DEBUG_TOKENS_TYPE = 11, |
| 216 | UFS_PHY_TYPE = 12, |
| 217 | UFS_GPP_TYPE = 13, |
| 218 | PMC_TYPE = 14, |
| 219 | IUNIT_TYPE = 15, |
| 220 | NVM_CONFIG_TYPE = 16, |
| 221 | UEP_TYPE = 17, |
| 222 | UFS_RATE_B_TYPE = 18, |
| 223 | MAX_SUBPARTS = 19, |
| 224 | }; |
| 225 | |
| 226 | /* |
| 227 | * There are two order requirements for an IFWI image: |
| 228 | * 1. Order in which the sub-partitions lie within the BPDT entries. |
| 229 | * 2. Order in which the sub-partitions lie within the image. |
| 230 | * |
| 231 | * header_order defines #1 i.e. the order in which the sub-partitions should |
| 232 | * appear in the BPDT entries. pack_order defines #2 i.e. the order in which |
| 233 | * sub-partitions appear in the IFWI image. pack_order controls the offset and |
| 234 | * thus sub-partitions would have increasing offsets as we loop over pack_order. |
| 235 | */ |
| 236 | const enum bpdt_entry_type bpdt_header_order[MAX_SUBPARTS] = { |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 237 | /* Order of the following entries is mandatory. */ |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 238 | CSE_IDLM_TYPE, |
| 239 | IFP_OVERRIDE_TYPE, |
| 240 | S_BPDT_TYPE, |
| 241 | CSE_RBE_TYPE, |
| 242 | UFS_PHY_TYPE, |
| 243 | UFS_GPP_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 244 | /* Order of the following entries is recommended. */ |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 245 | UEP_TYPE, |
| 246 | NVM_CONFIG_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 247 | UFS_RATE_B_TYPE, |
| 248 | IBB_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 249 | SMIP_TYPE, |
| 250 | PMC_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 251 | CSE_BUP_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 252 | UCODE_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 253 | DEBUG_TOKENS_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 254 | IUNIT_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 255 | CSE_MAIN_TYPE, |
| 256 | ISH_TYPE, |
| 257 | OBB_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 258 | }; |
| 259 | |
| 260 | const enum bpdt_entry_type bpdt_pack_order[MAX_SUBPARTS] = { |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 261 | /* Order of the following entries is mandatory. */ |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 262 | UFS_GPP_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 263 | UFS_PHY_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 264 | IFP_OVERRIDE_TYPE, |
| 265 | UEP_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 266 | NVM_CONFIG_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 267 | UFS_RATE_B_TYPE, |
| 268 | /* Order of the following entries is recommended. */ |
| 269 | IBB_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 270 | SMIP_TYPE, |
| 271 | CSE_RBE_TYPE, |
| 272 | PMC_TYPE, |
| 273 | CSE_BUP_TYPE, |
| 274 | UCODE_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 275 | CSE_IDLM_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 276 | DEBUG_TOKENS_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 277 | S_BPDT_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 278 | IUNIT_TYPE, |
Furquan Shaikh | fe42b11 | 2016-06-10 11:05:16 -0700 | [diff] [blame] | 279 | CSE_MAIN_TYPE, |
| 280 | ISH_TYPE, |
| 281 | OBB_TYPE, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 282 | }; |
| 283 | |
| 284 | /* Utility functions. */ |
| 285 | enum ifwi_ret { |
| 286 | COMMAND_ERR = -1, |
| 287 | NO_ACTION_REQUIRED = 0, |
| 288 | REPACK_REQUIRED = 1, |
| 289 | }; |
| 290 | |
| 291 | struct dir_ops { |
| 292 | enum ifwi_ret (*dir_add)(int); |
| 293 | }; |
| 294 | |
| 295 | static enum ifwi_ret ibbp_dir_add(int); |
| 296 | |
| 297 | const struct subpart_info { |
| 298 | const char *name; |
| 299 | const char *readable_name; |
| 300 | uint32_t attr; |
| 301 | struct dir_ops dir_ops; |
| 302 | } subparts[MAX_SUBPARTS] = { |
| 303 | /* OEM SMIP */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 304 | [SMIP_TYPE] = {"SMIP", "SMIP", CONTAINS_DIR, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 305 | /* CSE RBE */ |
| 306 | [CSE_RBE_TYPE] = {"RBEP", "CSE_RBE", CONTAINS_DIR | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 307 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 308 | /* CSE BUP */ |
| 309 | [CSE_BUP_TYPE] = {"FTPR", "CSE_BUP", CONTAINS_DIR | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 310 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 311 | /* uCode */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 312 | [UCODE_TYPE] = {"UCOD", "Microcode", CONTAINS_DIR, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 313 | /* IBB */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 314 | [IBB_TYPE] = {"IBBP", "Bootblock", CONTAINS_DIR, {ibbp_dir_add} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 315 | /* S-BPDT */ |
| 316 | [S_BPDT_TYPE] = {"S_BPDT", "S-BPDT", AUTO_GENERATED | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 317 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 318 | /* OBB */ |
| 319 | [OBB_TYPE] = {"OBBP", "OEM boot block", CONTAINS_DIR | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 320 | NON_CRITICAL_SUBPART, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 321 | /* CSE Main */ |
| 322 | [CSE_MAIN_TYPE] = {"NFTP", "CSE_MAIN", CONTAINS_DIR | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 323 | NON_CRITICAL_SUBPART, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 324 | /* ISH */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 325 | [ISH_TYPE] = {"ISHP", "ISH", NON_CRITICAL_SUBPART, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 326 | /* CSE IDLM */ |
| 327 | [CSE_IDLM_TYPE] = {"DLMP", "CSE_IDLM", CONTAINS_DIR | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 328 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 329 | /* IFP Override */ |
| 330 | [IFP_OVERRIDE_TYPE] = {"IFP_OVERRIDE", "IFP_OVERRIDE", |
| 331 | LIES_WITHIN_BPDT_4K | MANDATORY_BPDT_ENTRY, |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 332 | {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 333 | /* Debug Tokens */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 334 | [DEBUG_TOKENS_TYPE] = {"DEBUG_TOKENS", "Debug Tokens", 0, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 335 | /* UFS Phy Configuration */ |
| 336 | [UFS_PHY_TYPE] = {"UFS_PHY", "UFS Phy", LIES_WITHIN_BPDT_4K | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 337 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 338 | /* UFS GPP LUN ID */ |
| 339 | [UFS_GPP_TYPE] = {"UFS_GPP", "UFS GPP", LIES_WITHIN_BPDT_4K | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 340 | MANDATORY_BPDT_ENTRY, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 341 | /* PMC */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 342 | [PMC_TYPE] = {"PMCP", "PMC firmware", CONTAINS_DIR, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 343 | /* IUNIT */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 344 | [IUNIT_TYPE] = {"IUNP", "IUNIT", NON_CRITICAL_SUBPART, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 345 | /* NVM Config */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 346 | [NVM_CONFIG_TYPE] = {"NVM_CONFIG", "NVM Config", 0, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 347 | /* UEP */ |
| 348 | [UEP_TYPE] = {"UEP", "UEP", LIES_WITHIN_BPDT_4K | MANDATORY_BPDT_ENTRY, |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 349 | {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 350 | /* UFS Rate B Config */ |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 351 | [UFS_RATE_B_TYPE] = {"UFS_RATE_B", "UFS Rate B Config", 0, {NULL} }, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 352 | }; |
| 353 | |
| 354 | struct ifwi_image { |
| 355 | /* Data read from input file. */ |
| 356 | struct buffer input_buff; |
| 357 | |
| 358 | /* BPDT header and entries. */ |
| 359 | struct buffer bpdt; |
| 360 | size_t input_ifwi_start_offset; |
| 361 | size_t input_ifwi_end_offset; |
| 362 | |
| 363 | /* Subpartition content. */ |
| 364 | struct buffer subpart_buf[MAX_SUBPARTS]; |
| 365 | } ifwi_image; |
| 366 | |
| 367 | static void alloc_buffer(struct buffer *b, size_t s, const char *n) |
| 368 | { |
| 369 | if (buffer_create(b, s, n) == 0) |
| 370 | return; |
| 371 | |
| 372 | ERROR("Buffer allocation failure for %s (size = %zx).\n", n, s); |
| 373 | exit(-1); |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * Read header/entry members in little-endian format. |
Patrick Georgi | 01cfecc | 2020-01-29 13:31:16 +0100 | [diff] [blame] | 378 | * Returns the offset up to which the read was performed. |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 379 | */ |
| 380 | static size_t read_member(void *src, size_t offset, size_t size_bytes, |
| 381 | void *dst) |
| 382 | { |
| 383 | switch (size_bytes) { |
| 384 | case 1: |
| 385 | *(uint8_t *)dst = read_at_le8(src, offset); |
| 386 | break; |
| 387 | case 2: |
| 388 | *(uint16_t *)dst = read_at_le16(src, offset); |
| 389 | break; |
| 390 | case 4: |
| 391 | *(uint32_t *)dst = read_at_le32(src, offset); |
| 392 | break; |
| 393 | case 8: |
| 394 | *(uint64_t *)dst = read_at_le64(src, offset); |
| 395 | break; |
| 396 | default: |
| 397 | ERROR("Read size not supported %zd\n", size_bytes); |
| 398 | exit(-1); |
| 399 | } |
| 400 | |
| 401 | return (offset + size_bytes); |
| 402 | } |
| 403 | |
| 404 | /* |
| 405 | * Convert to little endian format. |
Patrick Georgi | 01cfecc | 2020-01-29 13:31:16 +0100 | [diff] [blame] | 406 | * Returns the offset up to which the fixup was performed. |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 407 | */ |
| 408 | static size_t fix_member(void *data, size_t offset, size_t size_bytes) |
| 409 | { |
| 410 | uint8_t *src = (uint8_t *)data + offset; |
| 411 | |
| 412 | switch (size_bytes) { |
| 413 | case 1: |
| 414 | write_at_le8(data, *(uint8_t *)src, offset); |
| 415 | break; |
| 416 | case 2: |
| 417 | write_at_le16(data, *(uint16_t *)src, offset); |
| 418 | break; |
| 419 | case 4: |
| 420 | write_at_le32(data, *(uint32_t *)src, offset); |
| 421 | break; |
| 422 | case 8: |
| 423 | write_at_le64(data, *(uint64_t *)src, offset); |
| 424 | break; |
| 425 | default: |
| 426 | ERROR("Write size not supported %zd\n", size_bytes); |
| 427 | exit(-1); |
| 428 | } |
| 429 | return (offset + size_bytes); |
| 430 | } |
| 431 | |
| 432 | |
| 433 | static void print_subpart_dir(struct subpart_dir *s) |
| 434 | { |
| 435 | if (verbose == 0) |
| 436 | return; |
| 437 | |
| 438 | size_t i; |
| 439 | |
| 440 | printf("%-25s 0x%-23.8x\n", "Marker", s->h.marker); |
| 441 | printf("%-25s %-25d\n", "Num entries", s->h.num_entries); |
| 442 | printf("%-25s %-25d\n", "Header Version", s->h.header_version); |
| 443 | printf("%-25s %-25d\n", "Entry Version", s->h.entry_version); |
| 444 | printf("%-25s 0x%-23x\n", "Header Length", s->h.header_length); |
| 445 | printf("%-25s 0x%-23x\n", "Checksum", s->h.checksum); |
| 446 | printf("%-25s ", "Name"); |
| 447 | for (i = 0; i < sizeof(s->h.name); i++) |
| 448 | printf("%c", s->h.name[i]); |
| 449 | |
| 450 | printf("\n"); |
| 451 | |
| 452 | printf("%-25s%-25s%-25s%-25s%-25s\n", "Entry #", "Name", "Offset", |
| 453 | "Length", "Rsvd"); |
| 454 | |
| 455 | printf("==============================================================" |
| 456 | "===========================================================\n"); |
| 457 | |
| 458 | for (i = 0; i < s->h.num_entries; i++) { |
| 459 | printf("%-25zd%-25.12s0x%-23x0x%-23x0x%-23x\n", i+1, |
| 460 | s->e[i].name, s->e[i].offset, s->e[i].length, |
| 461 | s->e[i].rsvd); |
| 462 | } |
| 463 | |
| 464 | printf("==============================================================" |
| 465 | "===========================================================\n"); |
| 466 | } |
| 467 | |
| 468 | static void bpdt_print_header(struct bpdt_header *h, const char *name) |
| 469 | { |
| 470 | if (verbose == 0) |
| 471 | return; |
| 472 | |
| 473 | printf("%-25s %-25s\n", "Header", name); |
| 474 | printf("%-25s 0x%-23.8x\n", "Signature", h->signature); |
| 475 | printf("%-25s %-25d\n", "Descriptor count", h->descriptor_count); |
| 476 | printf("%-25s %-25d\n", "BPDT Version", h->bpdt_version); |
| 477 | printf("%-25s 0x%-23x\n", "XOR checksum", h->xor_redundant_block); |
| 478 | printf("%-25s 0x%-23x\n", "IFWI Version", h->ifwi_version); |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 479 | printf("%-25s 0x%-23llx\n", "FIT Tool Version", |
| 480 | (long long)h->fit_tool_version); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | static void bpdt_print_entries(struct bpdt_entry *e, size_t count, |
| 484 | const char *name) |
| 485 | { |
| 486 | if (verbose == 0) |
| 487 | return; |
| 488 | |
| 489 | printf("%s entries\n", name); |
| 490 | |
| 491 | printf("%-25s%-25s%-25s%-25s%-25s%-25s%-25s%-25s\n", "Entry #", |
| 492 | "Sub-Partition", "Name", "Type", "Flags", "Offset", "Size", |
| 493 | "File Offset"); |
| 494 | |
| 495 | printf("==============================================================" |
| 496 | "==============================================================" |
| 497 | "==============================================================" |
| 498 | "===============\n"); |
| 499 | |
| 500 | |
| 501 | size_t i; |
| 502 | for (i = 0; i < count; i++) { |
| 503 | printf("%-25zd%-25s%-25s%-25d0x%-23.08x0x%-23x0x%-23x0x%-23zx" |
| 504 | "\n", i+1, subparts[e[i].type].name, |
| 505 | subparts[e[i].type].readable_name, e[i].type, e[i].flags, |
| 506 | e[i].offset, e[i].size, |
| 507 | e[i].offset + ifwi_image.input_ifwi_start_offset); |
| 508 | } |
| 509 | |
| 510 | printf("==============================================================" |
| 511 | "==============================================================" |
| 512 | "==============================================================" |
| 513 | "===============\n"); |
| 514 | |
| 515 | } |
| 516 | |
| 517 | static void bpdt_validate_header(struct bpdt_header *h, const char *name) |
| 518 | { |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 519 | assert(h->signature == BPDT_SIGNATURE); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 520 | |
| 521 | if (h->bpdt_version != 1) { |
| 522 | ERROR("Invalid header : %s\n", name); |
| 523 | exit(-1); |
| 524 | } |
| 525 | |
| 526 | DEBUG("Validated header : %s\n", name); |
| 527 | } |
| 528 | |
| 529 | static void bpdt_read_header(void *data, struct bpdt_header *h, |
| 530 | const char *name) |
| 531 | { |
| 532 | size_t offset = 0; |
| 533 | |
| 534 | offset = read_member(data, offset, sizeof(h->signature), &h->signature); |
| 535 | offset = read_member(data, offset, sizeof(h->descriptor_count), |
| 536 | &h->descriptor_count); |
| 537 | offset = read_member(data, offset, sizeof(h->bpdt_version), |
| 538 | &h->bpdt_version); |
| 539 | offset = read_member(data, offset, sizeof(h->xor_redundant_block), |
| 540 | &h->xor_redundant_block); |
| 541 | offset = read_member(data, offset, sizeof(h->ifwi_version), |
| 542 | &h->ifwi_version); |
Paul Menzel | deb9b03 | 2017-03-08 10:51:52 +0100 | [diff] [blame] | 543 | read_member(data, offset, sizeof(h->fit_tool_version), |
| 544 | &h->fit_tool_version); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 545 | |
| 546 | bpdt_validate_header(h, name); |
| 547 | bpdt_print_header(h, name); |
| 548 | } |
| 549 | |
| 550 | static void bpdt_read_entries(void *data, struct bpdt *bpdt, const char *name) |
| 551 | { |
| 552 | size_t i, offset = 0; |
| 553 | struct bpdt_entry *e = &bpdt->e[0]; |
| 554 | size_t count = bpdt->h.descriptor_count; |
| 555 | |
| 556 | for (i = 0; i < count; i++) { |
| 557 | offset = read_member(data, offset, sizeof(e[i].type), |
| 558 | &e[i].type); |
| 559 | offset = read_member(data, offset, sizeof(e[i].flags), |
| 560 | &e[i].flags); |
| 561 | offset = read_member(data, offset, sizeof(e[i].offset), |
| 562 | &e[i].offset); |
| 563 | offset = read_member(data, offset, sizeof(e[i].size), |
| 564 | &e[i].size); |
| 565 | } |
| 566 | |
| 567 | bpdt_print_entries(e, count, name); |
| 568 | } |
| 569 | |
| 570 | /* |
| 571 | * Given type of sub-partition, identify BPDT entry for it. |
| 572 | * Sub-Partition could lie either within BPDT or S-BPDT. |
| 573 | */ |
| 574 | static struct bpdt_entry *__find_entry_by_type(struct bpdt_entry *e, |
| 575 | size_t count, int type) |
| 576 | { |
| 577 | size_t i; |
| 578 | for (i = 0; i < count; i++) { |
| 579 | if (e[i].type == type) |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | if (i == count) |
| 584 | return NULL; |
| 585 | |
| 586 | return &e[i]; |
| 587 | } |
| 588 | |
| 589 | static struct bpdt_entry *find_entry_by_type(int type) |
| 590 | { |
| 591 | struct bpdt *b = buffer_get(&ifwi_image.bpdt); |
| 592 | if (b == NULL) |
| 593 | return NULL; |
| 594 | |
| 595 | struct bpdt_entry *curr = __find_entry_by_type(&b->e[0], |
| 596 | b->h.descriptor_count, |
| 597 | type); |
| 598 | |
| 599 | if (curr) |
| 600 | return curr; |
| 601 | |
| 602 | b = buffer_get(&ifwi_image.subpart_buf[S_BPDT_TYPE]); |
| 603 | if (b == NULL) |
| 604 | return NULL; |
| 605 | |
| 606 | return __find_entry_by_type(&b->e[0], b->h.descriptor_count, type); |
| 607 | } |
| 608 | |
| 609 | /* |
| 610 | * Find sub-partition type given its name. If the name does not exist, returns |
| 611 | * -1. |
| 612 | */ |
| 613 | static int find_type_by_name(const char *name) |
| 614 | { |
| 615 | int i; |
| 616 | |
| 617 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 618 | if ((strlen(subparts[i].name) == strlen(name)) && |
| 619 | (!strcmp(subparts[i].name, name))) |
| 620 | break; |
| 621 | } |
| 622 | |
| 623 | if (i == MAX_SUBPARTS) { |
| 624 | ERROR("Invalid sub-partition name %s.\n", name); |
| 625 | return -1; |
| 626 | } |
| 627 | |
| 628 | return i; |
| 629 | } |
| 630 | |
| 631 | /* |
| 632 | * Read the content of a sub-partition from input file and store it in |
| 633 | * ifwi_image.subpart_buf[SUB-PARTITION_TYPE]. |
| 634 | * |
| 635 | * Returns the maximum offset occupied by the sub-partitions. |
| 636 | */ |
| 637 | static size_t read_subpart_buf(void *data, size_t size, struct bpdt_entry *e, |
| 638 | size_t count) |
| 639 | { |
| 640 | size_t i, type; |
| 641 | struct buffer *buf; |
| 642 | size_t max_offset = 0; |
| 643 | |
| 644 | for (i = 0; i < count; i++) { |
| 645 | type = e[i].type; |
| 646 | |
| 647 | if (type >= MAX_SUBPARTS) { |
| 648 | ERROR("Invalid sub-partition type %zd.\n", type); |
| 649 | exit(-1); |
| 650 | } |
| 651 | |
| 652 | if (buffer_size(&ifwi_image.subpart_buf[type])) { |
| 653 | ERROR("Multiple sub-partitions of type %zd(%s).\n", |
| 654 | type, subparts[type].name); |
| 655 | exit(-1); |
| 656 | } |
| 657 | |
| 658 | if (e[i].size == 0) { |
| 659 | INFO("Dummy sub-partition %zd(%s). Skipping.\n", type, |
| 660 | subparts[type].name); |
| 661 | continue; |
| 662 | } |
| 663 | |
| 664 | assert((e[i].offset + e[i].size) <= size); |
| 665 | |
| 666 | /* |
| 667 | * Sub-partitions in IFWI image are not in the same order as |
Patrick Georgi | 01cfecc | 2020-01-29 13:31:16 +0100 | [diff] [blame] | 668 | * in BPDT entries. BPDT entries are in header_order whereas |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 669 | * sub-partition offsets in the image are in pack_order. |
| 670 | */ |
| 671 | if ((e[i].offset + e[i].size) > max_offset) |
| 672 | max_offset = e[i].offset + e[i].size; |
| 673 | |
| 674 | /* |
| 675 | * S-BPDT sub-partition contains information about all the |
| 676 | * non-critical sub-partitions. Thus, size of S-BPDT |
| 677 | * sub-partition equals size of S-BPDT plus size of all the |
| 678 | * non-critical sub-partitions. Thus, reading whole of S-BPDT |
| 679 | * here would be redundant as the non-critical partitions are |
| 680 | * read and allocated buffers separately. Also, S-BPDT requires |
| 681 | * special handling for reading header and entries. |
| 682 | */ |
| 683 | if (type == S_BPDT_TYPE) |
| 684 | continue; |
| 685 | |
| 686 | buf = &ifwi_image.subpart_buf[type]; |
| 687 | |
| 688 | alloc_buffer(buf, e[i].size, subparts[type].name); |
| 689 | memcpy(buffer_get(buf), (uint8_t *)data + e[i].offset, |
| 690 | e[i].size); |
| 691 | } |
| 692 | |
| 693 | assert(max_offset); |
| 694 | return max_offset; |
| 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Allocate buffer for bpdt header, entries and all sub-partition content. |
| 699 | * Returns offset in data where BPDT ends. |
| 700 | */ |
| 701 | static size_t alloc_bpdt_buffer(void *data, size_t size, size_t offset, |
| 702 | struct buffer *b, const char *name) |
| 703 | { |
| 704 | struct bpdt_header bpdt_header; |
| 705 | assert((offset + BPDT_HEADER_SIZE) < size); |
| 706 | bpdt_read_header((uint8_t *)data + offset, &bpdt_header, name); |
| 707 | |
| 708 | /* Buffer to read BPDT header and entries. */ |
Werner Zeh | 310580e | 2016-06-24 13:03:38 +0200 | [diff] [blame] | 709 | alloc_buffer(b, get_bpdt_size(&bpdt_header), name); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 710 | |
| 711 | struct bpdt *bpdt = buffer_get(b); |
| 712 | memcpy(&bpdt->h, &bpdt_header, BPDT_HEADER_SIZE); |
| 713 | |
| 714 | /* |
| 715 | * If no entries are present, maximum offset occupied is (offset + |
| 716 | * BPDT_HEADER_SIZE). |
| 717 | */ |
| 718 | if (bpdt->h.descriptor_count == 0) |
| 719 | return (offset + BPDT_HEADER_SIZE); |
| 720 | |
| 721 | /* Read all entries. */ |
Werner Zeh | 310580e | 2016-06-24 13:03:38 +0200 | [diff] [blame] | 722 | assert((offset + get_bpdt_size(&bpdt->h)) < size); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 723 | bpdt_read_entries((uint8_t *)data + offset + BPDT_HEADER_SIZE, bpdt, |
| 724 | name); |
| 725 | |
| 726 | /* Read all sub-partition content in subpart_buf. */ |
| 727 | return read_subpart_buf(data, size, &bpdt->e[0], |
| 728 | bpdt->h.descriptor_count); |
| 729 | } |
| 730 | |
| 731 | static void parse_sbpdt(void *data, size_t size) |
| 732 | { |
| 733 | struct bpdt_entry *s; |
| 734 | s = find_entry_by_type(S_BPDT_TYPE); |
| 735 | if (!s) |
| 736 | return; |
| 737 | |
| 738 | assert(size > s->offset); |
| 739 | |
| 740 | alloc_bpdt_buffer(data, size, s->offset, |
| 741 | &ifwi_image.subpart_buf[S_BPDT_TYPE], |
| 742 | "S-BPDT"); |
| 743 | } |
| 744 | |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 745 | static uint8_t calc_checksum(struct subpart_dir *s) |
| 746 | { |
| 747 | size_t size = subpart_dir_size(&s->h); |
| 748 | uint8_t *data = (uint8_t *)s; |
| 749 | uint8_t checksum = 0; |
| 750 | size_t i; |
| 751 | |
| 752 | uint8_t old_checksum = s->h.checksum; |
| 753 | s->h.checksum = 0; |
| 754 | |
| 755 | for (i = 0; i < size; i++) |
| 756 | checksum += data[i]; |
| 757 | |
| 758 | s->h.checksum = old_checksum; |
| 759 | |
| 760 | /* 2s complement */ |
| 761 | return -checksum; |
| 762 | } |
| 763 | |
| 764 | static void validate_subpart_dir(struct subpart_dir *s, const char *name, |
| 765 | bool checksum_check) |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 766 | { |
| 767 | if ((s->h.marker != SUBPART_DIR_MARKER) || |
| 768 | (s->h.header_version != SUBPART_DIR_HEADER_VERSION_SUPPORTED) || |
| 769 | (s->h.entry_version != SUBPART_DIR_ENTRY_VERSION_SUPPORTED) || |
| 770 | (s->h.header_length != SUBPART_DIR_HEADER_SIZE)) { |
| 771 | ERROR("Invalid subpart_dir for %s.\n", name); |
| 772 | exit(-1); |
| 773 | } |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 774 | |
| 775 | if (checksum_check == false) |
| 776 | return; |
| 777 | |
| 778 | uint8_t checksum = calc_checksum(s); |
| 779 | |
| 780 | if (checksum != s->h.checksum) |
| 781 | ERROR("Invalid checksum for %s (Expected=0x%x, Actual=0x%x).\n", |
| 782 | name, checksum, s->h.checksum); |
| 783 | } |
| 784 | |
| 785 | static void validate_subpart_dir_without_checksum(struct subpart_dir *s, |
| 786 | const char *name) |
| 787 | { |
| 788 | validate_subpart_dir(s, name, 0); |
| 789 | } |
| 790 | |
| 791 | static void validate_subpart_dir_with_checksum(struct subpart_dir *s, |
| 792 | const char *name) |
| 793 | { |
| 794 | validate_subpart_dir(s, name, 1); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | static void parse_subpart_dir(struct buffer *subpart_dir_buf, |
| 798 | struct buffer *input_buf, const char *name) |
| 799 | { |
| 800 | struct subpart_dir_header hdr; |
| 801 | size_t offset = 0; |
| 802 | uint8_t *data = buffer_get(input_buf); |
| 803 | size_t size = buffer_size(input_buf); |
| 804 | |
| 805 | /* Read Subpart_Dir header. */ |
| 806 | assert(size >= SUBPART_DIR_HEADER_SIZE); |
| 807 | offset = read_member(data, offset, sizeof(hdr.marker), &hdr.marker); |
| 808 | offset = read_member(data, offset, sizeof(hdr.num_entries), |
| 809 | &hdr.num_entries); |
| 810 | offset = read_member(data, offset, sizeof(hdr.header_version), |
| 811 | &hdr.header_version); |
| 812 | offset = read_member(data, offset, sizeof(hdr.entry_version), |
| 813 | &hdr.entry_version); |
| 814 | offset = read_member(data, offset, sizeof(hdr.header_length), |
| 815 | &hdr.header_length); |
| 816 | offset = read_member(data, offset, sizeof(hdr.checksum), &hdr.checksum); |
| 817 | memcpy(hdr.name, data + offset, sizeof(hdr.name)); |
| 818 | offset += sizeof(hdr.name); |
| 819 | |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 820 | validate_subpart_dir_without_checksum((struct subpart_dir *)&hdr, name); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 821 | |
| 822 | assert(size > subpart_dir_size(&hdr)); |
| 823 | alloc_buffer(subpart_dir_buf, subpart_dir_size(&hdr), "Subpart Dir"); |
| 824 | memcpy(buffer_get(subpart_dir_buf), &hdr, SUBPART_DIR_HEADER_SIZE); |
| 825 | |
| 826 | /* Read Subpart Dir entries. */ |
| 827 | struct subpart_dir *subpart_dir = buffer_get(subpart_dir_buf); |
| 828 | struct subpart_dir_entry *e = &subpart_dir->e[0]; |
| 829 | uint32_t i; |
| 830 | for (i = 0; i < hdr.num_entries; i++) { |
| 831 | memcpy(e[i].name, data + offset, sizeof(e[i].name)); |
| 832 | offset += sizeof(e[i].name); |
| 833 | offset = read_member(data, offset, sizeof(e[i].offset), |
| 834 | &e[i].offset); |
| 835 | offset = read_member(data, offset, sizeof(e[i].length), |
| 836 | &e[i].length); |
| 837 | offset = read_member(data, offset, sizeof(e[i].rsvd), |
| 838 | &e[i].rsvd); |
| 839 | } |
| 840 | |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 841 | validate_subpart_dir_with_checksum(subpart_dir, name); |
| 842 | |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 843 | print_subpart_dir(subpart_dir); |
| 844 | } |
| 845 | |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 846 | /* Parse the bpdt entries to compute the size of the BPDT */ |
| 847 | static size_t bpdt_size(void *data) |
| 848 | { |
| 849 | struct bpdt *b = (struct bpdt *)data; |
| 850 | size_t i, size = 0; |
| 851 | |
| 852 | for (i = 0; i < b->h.descriptor_count; i++) |
| 853 | size = MAX(size, b->e[i].offset + b->e[i].size); |
| 854 | |
| 855 | return size; |
| 856 | } |
| 857 | |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 858 | /* Parse input image file to identify different sub-partitions. */ |
| 859 | static int ifwi_parse(void) |
| 860 | { |
| 861 | DEBUG("Parsing IFWI image...\n"); |
| 862 | const char *image_name = param.image_name; |
| 863 | |
| 864 | /* Read input file. */ |
| 865 | struct buffer *buff = &ifwi_image.input_buff; |
| 866 | if (buffer_from_file(buff, image_name)) { |
| 867 | ERROR("Failed to read input file %s.\n", image_name); |
| 868 | return -1; |
| 869 | } |
| 870 | |
| 871 | INFO("Buffer %p size 0x%zx\n", buff->data, buff->size); |
| 872 | |
| 873 | /* Look for BPDT signature at 4K intervals. */ |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 874 | size_t offset = 0, lbp = LBP1; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 875 | void *data = buffer_get(buff); |
| 876 | |
| 877 | while (offset < buffer_size(buff)) { |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 878 | if (read_at_le32(data, offset) == BPDT_SIGNATURE) { |
| 879 | if (lbp == param.logical_boot_partition) |
| 880 | break; |
| 881 | offset += bpdt_size((uint8_t *)data + offset); |
| 882 | lbp++; |
| 883 | } else |
| 884 | offset += 4 * KiB; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | if (offset >= buffer_size(buff)) { |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 888 | ERROR("Image does not contain BPDT for LBP=%zd!!\n", |
| 889 | param.logical_boot_partition); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 890 | return -1; |
| 891 | } |
| 892 | |
| 893 | ifwi_image.input_ifwi_start_offset = offset; |
| 894 | INFO("BPDT starts at offset 0x%zx.\n", offset); |
| 895 | |
| 896 | data = (uint8_t *)data + offset; |
| 897 | size_t ifwi_size = buffer_size(buff) - offset; |
| 898 | |
| 899 | /* Read BPDT and sub-partitions. */ |
| 900 | uintptr_t end_offset; |
| 901 | end_offset = ifwi_image.input_ifwi_start_offset + |
| 902 | alloc_bpdt_buffer(data, ifwi_size, 0, &ifwi_image.bpdt, "BPDT"); |
| 903 | |
| 904 | /* Parse S-BPDT, if any. */ |
| 905 | parse_sbpdt(data, ifwi_size); |
| 906 | |
| 907 | /* |
| 908 | * Store end offset of IFWI. Required for copying any trailing non-IFWI |
| 909 | * part of the image. |
| 910 | * ASSUMPTION: IFWI image always ends on a 4K boundary. |
| 911 | */ |
| 912 | ifwi_image.input_ifwi_end_offset = ALIGN(end_offset, 4 * KiB); |
| 913 | DEBUG("Parsing done.\n"); |
| 914 | |
| 915 | return 0; |
| 916 | } |
| 917 | |
| 918 | /* |
| 919 | * This function is used by repack to count the number of BPDT and S-BPDT |
| 920 | * entries that are present. It frees the current buffers used by the entries |
| 921 | * and allocates fresh buffers that can be used for repacking. Returns BPDT |
| 922 | * entries which are empty and need to be filled in. |
| 923 | */ |
| 924 | static void __bpdt_reset(struct buffer *b, size_t count, size_t size) |
| 925 | { |
| 926 | size_t bpdt_size = BPDT_HEADER_SIZE + count * BPDT_ENTRY_SIZE; |
| 927 | assert(size >= bpdt_size); |
| 928 | |
| 929 | /* |
| 930 | * If buffer does not have the required size, allocate a fresh buffer. |
| 931 | */ |
| 932 | if (buffer_size(b) != size) { |
| 933 | struct buffer temp; |
| 934 | alloc_buffer(&temp, size, b->name); |
| 935 | memcpy(buffer_get(&temp), buffer_get(b), buffer_size(b)); |
| 936 | buffer_delete(b); |
| 937 | *b = temp; |
| 938 | } |
| 939 | |
| 940 | struct bpdt *bpdt = buffer_get(b); |
| 941 | uint8_t *ptr = (uint8_t *)&bpdt->e[0]; |
| 942 | size_t entries_size = BPDT_ENTRY_SIZE * count; |
| 943 | |
| 944 | /* Zero out BPDT entries. */ |
| 945 | memset(ptr, 0, entries_size); |
| 946 | /* Fill any pad-space with FF. */ |
| 947 | memset(ptr + entries_size, 0xFF, size - bpdt_size); |
| 948 | |
| 949 | bpdt->h.descriptor_count = count; |
| 950 | } |
| 951 | |
| 952 | static void bpdt_reset(void) |
| 953 | { |
| 954 | size_t i; |
| 955 | size_t bpdt_count = 0, sbpdt_count = 0, dummy_bpdt_count = 0; |
| 956 | |
| 957 | /* Count number of BPDT and S-BPDT entries. */ |
| 958 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 959 | if (buffer_size(&ifwi_image.subpart_buf[i]) == 0) { |
| 960 | if (subparts[i].attr & MANDATORY_BPDT_ENTRY) { |
| 961 | bpdt_count++; |
| 962 | dummy_bpdt_count++; |
| 963 | } |
| 964 | continue; |
| 965 | } |
| 966 | |
| 967 | if (subparts[i].attr & NON_CRITICAL_SUBPART) |
| 968 | sbpdt_count++; |
| 969 | else |
| 970 | bpdt_count++; |
| 971 | } |
| 972 | |
| 973 | DEBUG("Count: BPDT = %zd, Dummy BPDT = %zd, S-BPDT = %zd\n", bpdt_count, |
| 974 | dummy_bpdt_count, sbpdt_count); |
| 975 | |
| 976 | /* Update BPDT if required. */ |
| 977 | size_t bpdt_size = MAX(BPDT_MIN_SIZE, |
| 978 | BPDT_HEADER_SIZE + bpdt_count * BPDT_ENTRY_SIZE); |
| 979 | __bpdt_reset(&ifwi_image.bpdt, bpdt_count, bpdt_size); |
| 980 | |
| 981 | /* Update S-BPDT if required. */ |
| 982 | bpdt_size = ALIGN(BPDT_HEADER_SIZE + sbpdt_count * BPDT_ENTRY_SIZE, |
| 983 | 4 * KiB); |
| 984 | __bpdt_reset(&ifwi_image.subpart_buf[S_BPDT_TYPE], sbpdt_count, |
| 985 | bpdt_size); |
| 986 | } |
| 987 | |
| 988 | /* Initialize BPDT entries in header order. */ |
| 989 | static void bpdt_entries_init_header_order(void) |
| 990 | { |
| 991 | int i, type; |
| 992 | size_t size; |
| 993 | |
| 994 | struct bpdt *bpdt, *sbpdt, *curr; |
| 995 | size_t bpdt_curr = 0, sbpdt_curr = 0, *count_ptr; |
| 996 | |
| 997 | bpdt = buffer_get(&ifwi_image.bpdt); |
| 998 | sbpdt = buffer_get(&ifwi_image.subpart_buf[S_BPDT_TYPE]); |
| 999 | |
| 1000 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 1001 | type = bpdt_header_order[i]; |
| 1002 | size = buffer_size(&ifwi_image.subpart_buf[type]); |
| 1003 | |
| 1004 | if ((size == 0) && !(subparts[type].attr & |
| 1005 | MANDATORY_BPDT_ENTRY)) |
| 1006 | continue; |
| 1007 | |
| 1008 | if (subparts[type].attr & NON_CRITICAL_SUBPART) { |
| 1009 | curr = sbpdt; |
| 1010 | count_ptr = &sbpdt_curr; |
| 1011 | } else { |
| 1012 | curr = bpdt; |
| 1013 | count_ptr = &bpdt_curr; |
| 1014 | } |
| 1015 | |
| 1016 | assert(*count_ptr < curr->h.descriptor_count); |
| 1017 | curr->e[*count_ptr].type = type; |
| 1018 | curr->e[*count_ptr].flags = 0; |
| 1019 | curr->e[*count_ptr].offset = 0; |
| 1020 | curr->e[*count_ptr].size = size; |
| 1021 | |
| 1022 | (*count_ptr)++; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | static void pad_buffer(struct buffer *b, size_t size) |
| 1027 | { |
| 1028 | size_t buff_size = buffer_size(b); |
| 1029 | |
| 1030 | assert(buff_size <= size); |
| 1031 | |
| 1032 | if (buff_size == size) |
| 1033 | return; |
| 1034 | |
| 1035 | struct buffer temp; |
| 1036 | alloc_buffer(&temp, size, b->name); |
| 1037 | uint8_t *data = buffer_get(&temp); |
| 1038 | |
| 1039 | memcpy(data, buffer_get(b), buff_size); |
| 1040 | memset(data + buff_size, 0xFF, size - buff_size); |
| 1041 | |
| 1042 | *b = temp; |
| 1043 | } |
| 1044 | |
| 1045 | /* Initialize offsets of entries using pack order. */ |
| 1046 | static void bpdt_entries_init_pack_order(void) |
| 1047 | { |
| 1048 | int i, type; |
| 1049 | struct bpdt_entry *curr; |
| 1050 | size_t curr_offset, curr_end; |
| 1051 | |
| 1052 | curr_offset = MAX(BPDT_MIN_SIZE, buffer_size(&ifwi_image.bpdt)); |
| 1053 | |
| 1054 | /* |
| 1055 | * There are two types of sub-partitions that need to be handled here: |
| 1056 | * 1. Sub-partitions that lie within the same 4K as BPDT |
| 1057 | * 2. Sub-partitions that lie outside the 4K of BPDT |
| 1058 | * |
| 1059 | * For sub-partitions of type # 1, there is no requirement on the start |
| 1060 | * or end of the sub-partition. They need to be packed in without any |
| 1061 | * holes left in between. If there is any empty space left after the end |
| 1062 | * of the last sub-partition in 4K of BPDT, then that space needs to be |
| 1063 | * padded with FF bytes, but the size of the last sub-partition remains |
| 1064 | * unchanged. |
| 1065 | * |
| 1066 | * For sub-partitions of type # 2, both the start and end should be a |
| 1067 | * multiple of 4K. If not, then it needs to be padded with FF bytes and |
| 1068 | * size adjusted such that the sub-partition ends on 4K boundary. |
| 1069 | */ |
| 1070 | |
| 1071 | /* #1 Sub-partitions that lie within same 4K as BPDT. */ |
| 1072 | struct buffer *last_bpdt_buff = &ifwi_image.bpdt; |
| 1073 | |
| 1074 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 1075 | type = bpdt_pack_order[i]; |
| 1076 | curr = find_entry_by_type(type); |
| 1077 | |
| 1078 | if ((curr == NULL) || (curr->size == 0)) |
| 1079 | continue; |
| 1080 | |
| 1081 | if (!(subparts[type].attr & LIES_WITHIN_BPDT_4K)) |
| 1082 | continue; |
| 1083 | |
| 1084 | curr->offset = curr_offset; |
| 1085 | curr_offset = curr->offset + curr->size; |
| 1086 | last_bpdt_buff = &ifwi_image.subpart_buf[type]; |
| 1087 | DEBUG("type=%d, curr_offset=0x%zx, curr->offset=0x%x, " |
| 1088 | "curr->size=0x%x, buff_size=0x%zx\n", type, curr_offset, |
| 1089 | curr->offset, curr->size, |
| 1090 | buffer_size(&ifwi_image.subpart_buf[type])); |
| 1091 | } |
| 1092 | |
| 1093 | /* Pad ff bytes if there is any empty space left in BPDT 4K. */ |
| 1094 | curr_end = ALIGN(curr_offset, 4 * KiB); |
| 1095 | pad_buffer(last_bpdt_buff, |
| 1096 | buffer_size(last_bpdt_buff) + (curr_end - curr_offset)); |
| 1097 | curr_offset = curr_end; |
| 1098 | |
| 1099 | /* #2 Sub-partitions that lie outside of BPDT 4K. */ |
| 1100 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 1101 | type = bpdt_pack_order[i]; |
| 1102 | curr = find_entry_by_type(type); |
| 1103 | |
| 1104 | if ((curr == NULL) || (curr->size == 0)) |
| 1105 | continue; |
| 1106 | |
| 1107 | if (subparts[type].attr & LIES_WITHIN_BPDT_4K) |
| 1108 | continue; |
| 1109 | |
| 1110 | assert(curr_offset == ALIGN(curr_offset, 4 * KiB)); |
| 1111 | curr->offset = curr_offset; |
| 1112 | curr_end = ALIGN(curr->offset + curr->size, 4 * KiB); |
| 1113 | curr->size = curr_end - curr->offset; |
| 1114 | |
| 1115 | pad_buffer(&ifwi_image.subpart_buf[type], curr->size); |
| 1116 | |
| 1117 | curr_offset = curr_end; |
| 1118 | DEBUG("type=%d, curr_offset=0x%zx, curr->offset=0x%x, " |
| 1119 | "curr->size=0x%x, buff_size=0x%zx\n", type, curr_offset, |
| 1120 | curr->offset, curr->size, |
| 1121 | buffer_size(&ifwi_image.subpart_buf[type])); |
| 1122 | } |
| 1123 | |
| 1124 | /* |
| 1125 | * Update size of S-BPDT to include size of all non-critical |
| 1126 | * sub-partitions. |
| 1127 | * |
| 1128 | * Assumption: S-BPDT always lies at the end of IFWI image. |
| 1129 | */ |
| 1130 | curr = find_entry_by_type(S_BPDT_TYPE); |
| 1131 | assert(curr); |
| 1132 | |
| 1133 | assert(curr_offset == ALIGN(curr_offset, 4 * KiB)); |
| 1134 | curr->size = curr_offset - curr->offset; |
| 1135 | } |
| 1136 | |
| 1137 | /* Convert all members of BPDT to little-endian format. */ |
| 1138 | static void bpdt_fixup_write_buffer(struct buffer *buf) |
| 1139 | { |
| 1140 | struct bpdt *s = buffer_get(buf); |
| 1141 | |
| 1142 | struct bpdt_header *h = &s->h; |
| 1143 | struct bpdt_entry *e = &s->e[0]; |
| 1144 | |
| 1145 | size_t count = h->descriptor_count; |
| 1146 | |
| 1147 | size_t offset = 0; |
| 1148 | |
| 1149 | offset = fix_member(&h->signature, offset, sizeof(h->signature)); |
| 1150 | offset = fix_member(&h->descriptor_count, offset, |
| 1151 | sizeof(h->descriptor_count)); |
| 1152 | offset = fix_member(&h->bpdt_version, offset, sizeof(h->bpdt_version)); |
| 1153 | offset = fix_member(&h->xor_redundant_block, offset, |
| 1154 | sizeof(h->xor_redundant_block)); |
| 1155 | offset = fix_member(&h->ifwi_version, offset, sizeof(h->ifwi_version)); |
| 1156 | offset = fix_member(&h->fit_tool_version, offset, |
| 1157 | sizeof(h->fit_tool_version)); |
| 1158 | |
| 1159 | uint32_t i; |
| 1160 | for (i = 0; i < count; i++) { |
| 1161 | offset = fix_member(&e[i].type, offset, sizeof(e[i].type)); |
| 1162 | offset = fix_member(&e[i].flags, offset, sizeof(e[i].flags)); |
| 1163 | offset = fix_member(&e[i].offset, offset, sizeof(e[i].offset)); |
| 1164 | offset = fix_member(&e[i].size, offset, sizeof(e[i].size)); |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | /* Write BPDT to output buffer after fixup. */ |
| 1169 | static void bpdt_write(struct buffer *dst, size_t offset, struct buffer *src) |
| 1170 | { |
| 1171 | bpdt_fixup_write_buffer(src); |
| 1172 | memcpy(buffer_get(dst) + offset, buffer_get(src), buffer_size(src)); |
| 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * Follows these steps to re-create image: |
| 1177 | * 1. Write any non-IFWI prefix. |
| 1178 | * 2. Write out BPDT header and entries. |
| 1179 | * 3. Write sub-partition buffers to respective offsets. |
| 1180 | * 4. Write any non-IFWI suffix. |
| 1181 | * |
| 1182 | * While performing the above steps, make sure that any empty holes are filled |
| 1183 | * with FF. |
| 1184 | */ |
| 1185 | static void ifwi_write(const char *image_name) |
| 1186 | { |
| 1187 | struct bpdt_entry *s = find_entry_by_type(S_BPDT_TYPE); |
| 1188 | assert(s); |
| 1189 | |
| 1190 | size_t ifwi_start, ifwi_end, file_end; |
| 1191 | |
| 1192 | ifwi_start = ifwi_image.input_ifwi_start_offset; |
| 1193 | ifwi_end = ifwi_start + ALIGN(s->offset + s->size, 4 * KiB); |
| 1194 | file_end = ifwi_end + (buffer_size(&ifwi_image.input_buff) - |
| 1195 | ifwi_image.input_ifwi_end_offset); |
| 1196 | |
| 1197 | struct buffer b; |
| 1198 | |
| 1199 | alloc_buffer(&b, file_end, "Final-IFWI"); |
| 1200 | |
| 1201 | uint8_t *input_data = buffer_get(&ifwi_image.input_buff); |
| 1202 | uint8_t *output_data = buffer_get(&b); |
| 1203 | |
| 1204 | DEBUG("ifwi_start:0x%zx, ifwi_end:0x%zx, file_end:0x%zx\n", ifwi_start, |
| 1205 | ifwi_end, file_end); |
| 1206 | |
| 1207 | /* Copy non-IFWI prefix, if any. */ |
| 1208 | memcpy(output_data, input_data, ifwi_start); |
| 1209 | |
| 1210 | DEBUG("Copied non-IFWI prefix (offset=0x0, size=0x%zx).\n", ifwi_start); |
| 1211 | |
| 1212 | struct buffer ifwi; |
| 1213 | buffer_splice(&ifwi, &b, ifwi_start, ifwi_end - ifwi_start); |
| 1214 | uint8_t *ifwi_data = buffer_get(&ifwi); |
| 1215 | |
| 1216 | /* Copy sub-partitions using pack_order. */ |
| 1217 | struct bpdt_entry *curr; |
| 1218 | struct buffer *subpart_buf; |
| 1219 | int i, type; |
| 1220 | for (i = 0; i < MAX_SUBPARTS; i++) { |
| 1221 | type = bpdt_pack_order[i]; |
| 1222 | |
| 1223 | if (type == S_BPDT_TYPE) |
| 1224 | continue; |
| 1225 | |
| 1226 | curr = find_entry_by_type(type); |
| 1227 | |
| 1228 | if ((curr == NULL) || (curr->size == 0)) |
| 1229 | continue; |
| 1230 | |
| 1231 | subpart_buf = &ifwi_image.subpart_buf[type]; |
| 1232 | |
| 1233 | DEBUG("curr->offset=0x%x, curr->size=0x%x, type=%d, " |
| 1234 | "write_size=0x%zx\n", curr->offset, curr->size, type, |
| 1235 | buffer_size(subpart_buf)); |
| 1236 | |
| 1237 | assert((curr->offset + buffer_size(subpart_buf)) <= |
| 1238 | buffer_size(&ifwi)); |
| 1239 | |
| 1240 | memcpy(ifwi_data + curr->offset, buffer_get(subpart_buf), |
| 1241 | buffer_size(subpart_buf)); |
| 1242 | } |
| 1243 | |
| 1244 | /* Copy non-IFWI suffix, if any. */ |
| 1245 | if (ifwi_end != file_end) { |
| 1246 | memcpy(output_data + ifwi_end, |
| 1247 | input_data + ifwi_image.input_ifwi_end_offset, |
| 1248 | file_end - ifwi_end); |
| 1249 | DEBUG("Copied non-IFWI suffix (offset=0x%zx,size=0x%zx).\n", |
| 1250 | ifwi_end, file_end - ifwi_end); |
| 1251 | } |
| 1252 | |
| 1253 | /* |
| 1254 | * Convert BPDT to little-endian format and write it to output buffer. |
| 1255 | * S-BPDT is written first and then BPDT. |
| 1256 | */ |
| 1257 | bpdt_write(&ifwi, s->offset, &ifwi_image.subpart_buf[S_BPDT_TYPE]); |
| 1258 | bpdt_write(&ifwi, 0, &ifwi_image.bpdt); |
| 1259 | |
| 1260 | if (buffer_write_file(&b, image_name)) { |
| 1261 | ERROR("File write error\n"); |
| 1262 | exit(-1); |
| 1263 | } |
| 1264 | |
| 1265 | buffer_delete(&b); |
| 1266 | printf("Image written successfully to %s.\n", image_name); |
| 1267 | } |
| 1268 | |
| 1269 | /* |
| 1270 | * Calculate size and offset of each sub-partition again since it might have |
| 1271 | * changed because of add/delete operation. Also, re-create BPDT and S-BPDT |
| 1272 | * entries and write back the new IFWI image to file. |
| 1273 | */ |
| 1274 | static void ifwi_repack(void) |
| 1275 | { |
| 1276 | bpdt_reset(); |
| 1277 | bpdt_entries_init_header_order(); |
| 1278 | bpdt_entries_init_pack_order(); |
| 1279 | |
| 1280 | struct bpdt *b = buffer_get(&ifwi_image.bpdt); |
| 1281 | bpdt_print_entries(&b->e[0], b->h.descriptor_count, "BPDT"); |
| 1282 | |
| 1283 | b = buffer_get(&ifwi_image.subpart_buf[S_BPDT_TYPE]); |
| 1284 | bpdt_print_entries(&b->e[0], b->h.descriptor_count, "S-BPDT"); |
| 1285 | |
| 1286 | DEBUG("Repack done.. writing image.\n"); |
| 1287 | ifwi_write(param.image_name); |
| 1288 | } |
| 1289 | |
| 1290 | static void init_subpart_dir_header(struct subpart_dir_header *hdr, |
| 1291 | size_t count, const char *name) |
| 1292 | { |
| 1293 | memset(hdr, 0, sizeof(*hdr)); |
| 1294 | |
| 1295 | hdr->marker = SUBPART_DIR_MARKER; |
| 1296 | hdr->num_entries = count; |
| 1297 | hdr->header_version = SUBPART_DIR_HEADER_VERSION_SUPPORTED; |
| 1298 | hdr->entry_version = SUBPART_DIR_ENTRY_VERSION_SUPPORTED; |
| 1299 | hdr->header_length = SUBPART_DIR_HEADER_SIZE; |
| 1300 | memcpy(hdr->name, name, sizeof(hdr->name)); |
| 1301 | } |
| 1302 | |
| 1303 | static size_t init_subpart_dir_entry(struct subpart_dir_entry *e, |
| 1304 | struct buffer *b, size_t offset) |
| 1305 | { |
| 1306 | memset(e, 0, sizeof(*e)); |
| 1307 | |
| 1308 | assert(strlen(b->name) <= sizeof(e->name)); |
| 1309 | strncpy((char *)e->name, (char *)b->name, sizeof(e->name)); |
| 1310 | e->offset = offset; |
| 1311 | e->length = buffer_size(b); |
| 1312 | |
| 1313 | return (offset + buffer_size(b)); |
| 1314 | } |
| 1315 | |
| 1316 | static void init_manifest_header(struct manifest_header *hdr, size_t size) |
| 1317 | { |
| 1318 | memset(hdr, 0, sizeof(*hdr)); |
| 1319 | |
| 1320 | hdr->header_type = 0x4; |
| 1321 | assert((MANIFEST_HDR_SIZE % DWORD_SIZE) == 0); |
| 1322 | hdr->header_length = MANIFEST_HDR_SIZE / DWORD_SIZE; |
| 1323 | hdr->header_version = 0x10000; |
| 1324 | hdr->vendor = 0x8086; |
| 1325 | |
| 1326 | struct tm *local_time; |
| 1327 | time_t curr_time; |
| 1328 | char buffer[11]; |
| 1329 | |
| 1330 | curr_time = time(NULL); |
| 1331 | local_time = localtime(&curr_time); |
| 1332 | strftime(buffer, sizeof(buffer), "0x%Y%m%d", local_time); |
| 1333 | hdr->date = strtoul(buffer, NULL, 16); |
| 1334 | |
| 1335 | assert((size % DWORD_SIZE) == 0); |
| 1336 | hdr->size = size / DWORD_SIZE; |
| 1337 | hdr->id = MANIFEST_ID_MAGIC; |
| 1338 | } |
| 1339 | |
| 1340 | static void init_signed_pkg_info_ext(struct signed_pkg_info_ext *ext, |
| 1341 | size_t count, const char *name) |
| 1342 | { |
| 1343 | memset(ext, 0, sizeof(*ext)); |
| 1344 | |
| 1345 | ext->ext_type = SIGNED_PKG_INFO_EXT_TYPE; |
| 1346 | ext->ext_length = SIGNED_PKG_INFO_EXT_SIZE + count * MODULE_SIZE; |
| 1347 | memcpy(ext->name, name, sizeof(ext->name)); |
| 1348 | } |
| 1349 | |
| 1350 | static void subpart_dir_fixup_write_buffer(struct buffer *buf) |
| 1351 | { |
| 1352 | struct subpart_dir *s = buffer_get(buf); |
| 1353 | struct subpart_dir_header *h = &s->h; |
| 1354 | struct subpart_dir_entry *e = &s->e[0]; |
| 1355 | |
| 1356 | size_t count = h->num_entries; |
| 1357 | size_t offset = 0; |
| 1358 | |
| 1359 | offset = fix_member(&h->marker, offset, sizeof(h->marker)); |
| 1360 | offset = fix_member(&h->num_entries, offset, sizeof(h->num_entries)); |
| 1361 | offset = fix_member(&h->header_version, offset, |
| 1362 | sizeof(h->header_version)); |
| 1363 | offset = fix_member(&h->entry_version, offset, |
| 1364 | sizeof(h->entry_version)); |
| 1365 | offset = fix_member(&h->header_length, offset, |
| 1366 | sizeof(h->header_length)); |
| 1367 | offset = fix_member(&h->checksum, offset, sizeof(h->checksum)); |
| 1368 | offset += sizeof(h->name); |
| 1369 | |
| 1370 | uint32_t i; |
| 1371 | for (i = 0; i < count; i++) { |
| 1372 | offset += sizeof(e[i].name); |
| 1373 | offset = fix_member(&e[i].offset, offset, sizeof(e[i].offset)); |
| 1374 | offset = fix_member(&e[i].length, offset, sizeof(e[i].length)); |
| 1375 | offset = fix_member(&e[i].rsvd, offset, sizeof(e[i].rsvd)); |
| 1376 | } |
| 1377 | } |
| 1378 | |
| 1379 | static void create_subpart(struct buffer *dst, struct buffer *info[], |
| 1380 | size_t count, const char *name) |
| 1381 | { |
| 1382 | struct buffer subpart_dir_buff; |
| 1383 | size_t size = SUBPART_DIR_HEADER_SIZE + count * SUBPART_DIR_ENTRY_SIZE; |
| 1384 | |
| 1385 | alloc_buffer(&subpart_dir_buff, size, "subpart-dir"); |
| 1386 | |
| 1387 | struct subpart_dir_header *h = buffer_get(&subpart_dir_buff); |
| 1388 | struct subpart_dir_entry *e = (struct subpart_dir_entry *)(h + 1); |
| 1389 | |
| 1390 | init_subpart_dir_header(h, count, name); |
| 1391 | |
| 1392 | size_t curr_offset = size; |
| 1393 | size_t i; |
| 1394 | |
| 1395 | for (i = 0; i < count; i++) { |
| 1396 | curr_offset = init_subpart_dir_entry(&e[i], info[i], |
| 1397 | curr_offset); |
| 1398 | } |
| 1399 | |
| 1400 | alloc_buffer(dst, curr_offset, name); |
| 1401 | uint8_t *data = buffer_get(dst); |
| 1402 | |
| 1403 | for (i = 0; i < count; i++) { |
| 1404 | memcpy(data + e[i].offset, buffer_get(info[i]), |
| 1405 | buffer_size(info[i])); |
| 1406 | } |
| 1407 | |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 1408 | h->checksum = calc_checksum(buffer_get(&subpart_dir_buff)); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1409 | |
| 1410 | struct subpart_dir *dir = buffer_get(&subpart_dir_buff); |
| 1411 | |
| 1412 | print_subpart_dir(dir); |
| 1413 | |
| 1414 | subpart_dir_fixup_write_buffer(&subpart_dir_buff); |
| 1415 | memcpy(data, dir, buffer_size(&subpart_dir_buff)); |
| 1416 | |
| 1417 | buffer_delete(&subpart_dir_buff); |
| 1418 | } |
| 1419 | |
| 1420 | static enum ifwi_ret ibbp_dir_add(int type) |
| 1421 | { |
| 1422 | #define DUMMY_IBB_SIZE (4 * KiB) |
| 1423 | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 1424 | assert(type == IBB_TYPE); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1425 | |
| 1426 | /* |
| 1427 | * Entry # 1 - IBBP.man |
| 1428 | * Contains manifest header and signed pkg info extension. |
| 1429 | */ |
| 1430 | struct buffer manifest; |
| 1431 | size_t size = MANIFEST_HDR_SIZE + SIGNED_PKG_INFO_EXT_SIZE; |
| 1432 | alloc_buffer(&manifest, size, "IBBP.man"); |
| 1433 | |
| 1434 | struct manifest_header *man_hdr = buffer_get(&manifest); |
| 1435 | init_manifest_header(man_hdr, size); |
| 1436 | |
| 1437 | struct signed_pkg_info_ext *ext; |
| 1438 | ext = (struct signed_pkg_info_ext *)(man_hdr + 1); |
| 1439 | |
| 1440 | init_signed_pkg_info_ext(ext, 0, subparts[type].name); |
| 1441 | |
| 1442 | /* Entry # 2 - IBBL */ |
| 1443 | struct buffer ibbl; |
| 1444 | if (buffer_from_file(&ibbl, param.file_name)) |
| 1445 | return COMMAND_ERR; |
| 1446 | |
| 1447 | /* Entry # 3 - IBB */ |
| 1448 | struct buffer ibb; |
| 1449 | alloc_buffer(&ibb, DUMMY_IBB_SIZE, "IBB"); |
| 1450 | memset(buffer_get(&ibb), 0xFF, DUMMY_IBB_SIZE); |
| 1451 | |
| 1452 | /* Create subpartition. */ |
| 1453 | struct buffer *info[] = { |
| 1454 | &manifest, &ibbl, &ibb, |
| 1455 | }; |
| 1456 | create_subpart(&ifwi_image.subpart_buf[type], &info[0], |
| 1457 | ARRAY_SIZE(info), subparts[type].name); |
| 1458 | |
| 1459 | return REPACK_REQUIRED; |
| 1460 | } |
| 1461 | |
| 1462 | static enum ifwi_ret ifwi_raw_add(int type) |
| 1463 | { |
| 1464 | if (buffer_from_file(&ifwi_image.subpart_buf[type], param.file_name)) |
| 1465 | return COMMAND_ERR; |
| 1466 | |
| 1467 | printf("Sub-partition %s(%d) added from file %s.\n", param.subpart_name, |
| 1468 | type, param.file_name); |
| 1469 | return REPACK_REQUIRED; |
| 1470 | } |
| 1471 | |
| 1472 | static enum ifwi_ret ifwi_dir_add(int type) |
| 1473 | { |
| 1474 | if (!(subparts[type].attr & CONTAINS_DIR) || |
| 1475 | (subparts[type].dir_ops.dir_add == NULL)) { |
| 1476 | ERROR("Sub-Partition %s(%d) does not support dir ops.\n", |
| 1477 | subparts[type].name, type); |
| 1478 | return COMMAND_ERR; |
| 1479 | } |
| 1480 | |
| 1481 | if (!param.dentry_name) { |
| 1482 | ERROR("%s: -e option required\n", __func__); |
| 1483 | return COMMAND_ERR; |
| 1484 | } |
| 1485 | |
| 1486 | enum ifwi_ret ret = subparts[type].dir_ops.dir_add(type); |
| 1487 | if (ret != COMMAND_ERR) |
| 1488 | printf("Sub-partition %s(%d) entry %s added from file %s.\n", |
| 1489 | param.subpart_name, type, param.dentry_name, |
| 1490 | param.file_name); |
| 1491 | else |
| 1492 | ERROR("Sub-partition dir operation failed.\n"); |
| 1493 | |
| 1494 | return ret; |
| 1495 | } |
| 1496 | |
| 1497 | static enum ifwi_ret ifwi_add(void) |
| 1498 | { |
| 1499 | if (!param.file_name) { |
| 1500 | ERROR("%s: -f option required\n", __func__); |
| 1501 | return COMMAND_ERR; |
| 1502 | } |
| 1503 | |
| 1504 | if (!param.subpart_name) { |
| 1505 | ERROR("%s: -n option required\n", __func__); |
| 1506 | return COMMAND_ERR; |
| 1507 | } |
| 1508 | |
| 1509 | int type = find_type_by_name(param.subpart_name); |
| 1510 | if (type == -1) |
| 1511 | return COMMAND_ERR; |
| 1512 | |
| 1513 | const struct subpart_info *curr_subpart = &subparts[type]; |
| 1514 | |
| 1515 | if (curr_subpart->attr & AUTO_GENERATED) { |
| 1516 | ERROR("Cannot add auto-generated sub-partitions.\n"); |
| 1517 | return COMMAND_ERR; |
| 1518 | } |
| 1519 | |
| 1520 | if (buffer_size(&ifwi_image.subpart_buf[type])) { |
| 1521 | ERROR("Image already contains sub-partition %s(%d).\n", |
| 1522 | param.subpart_name, type); |
| 1523 | return COMMAND_ERR; |
| 1524 | } |
| 1525 | |
| 1526 | if (param.dir_ops) |
| 1527 | return ifwi_dir_add(type); |
| 1528 | |
| 1529 | return ifwi_raw_add(type); |
| 1530 | } |
| 1531 | |
| 1532 | static enum ifwi_ret ifwi_delete(void) |
| 1533 | { |
| 1534 | if (!param.subpart_name) { |
| 1535 | ERROR("%s: -n option required\n", __func__); |
| 1536 | return COMMAND_ERR; |
| 1537 | } |
| 1538 | |
| 1539 | int type = find_type_by_name(param.subpart_name); |
| 1540 | if (type == -1) |
| 1541 | return COMMAND_ERR; |
| 1542 | |
| 1543 | const struct subpart_info *curr_subpart = &subparts[type]; |
| 1544 | |
| 1545 | if (curr_subpart->attr & AUTO_GENERATED) { |
| 1546 | ERROR("Cannot delete auto-generated sub-partitions.\n"); |
| 1547 | return COMMAND_ERR; |
| 1548 | } |
| 1549 | |
| 1550 | if (buffer_size(&ifwi_image.subpart_buf[type]) == 0) { |
| 1551 | printf("Image does not contain sub-partition %s(%d).\n", |
| 1552 | param.subpart_name, type); |
| 1553 | return NO_ACTION_REQUIRED; |
| 1554 | } |
| 1555 | |
| 1556 | buffer_delete(&ifwi_image.subpart_buf[type]); |
| 1557 | printf("Sub-Partition %s(%d) deleted.\n", subparts[type].name, type); |
| 1558 | return REPACK_REQUIRED; |
| 1559 | } |
| 1560 | |
| 1561 | static enum ifwi_ret ifwi_dir_extract(int type) |
| 1562 | { |
| 1563 | if (!(subparts[type].attr & CONTAINS_DIR)) { |
| 1564 | ERROR("Sub-Partition %s(%d) does not support dir ops.\n", |
| 1565 | subparts[type].name, type); |
| 1566 | return COMMAND_ERR; |
| 1567 | } |
| 1568 | |
| 1569 | if (!param.dentry_name) { |
| 1570 | ERROR("%s: -e option required.\n", __func__); |
| 1571 | return COMMAND_ERR; |
| 1572 | } |
| 1573 | |
| 1574 | struct buffer subpart_dir_buff; |
| 1575 | parse_subpart_dir(&subpart_dir_buff, &ifwi_image.subpart_buf[type], |
| 1576 | subparts[type].name); |
| 1577 | |
| 1578 | uint32_t i; |
| 1579 | struct subpart_dir *s = buffer_get(&subpart_dir_buff); |
| 1580 | |
| 1581 | for (i = 0; i < s->h.num_entries; i++) { |
| 1582 | if (!strncmp((char *)s->e[i].name, param.dentry_name, |
| 1583 | sizeof(s->e[i].name))) |
| 1584 | break; |
| 1585 | } |
| 1586 | |
| 1587 | if (i == s->h.num_entries) { |
| 1588 | ERROR("Entry %s not found in subpartition for %s.\n", |
| 1589 | param.dentry_name, param.subpart_name); |
| 1590 | exit(-1); |
| 1591 | } |
| 1592 | |
| 1593 | struct buffer dst; |
| 1594 | |
| 1595 | DEBUG("Splicing buffer at 0x%x size 0x%x\n", s->e[i].offset, |
| 1596 | s->e[i].length); |
| 1597 | buffer_splice(&dst, &ifwi_image.subpart_buf[type], s->e[i].offset, |
| 1598 | s->e[i].length); |
| 1599 | |
| 1600 | if (buffer_write_file(&dst, param.file_name)) |
| 1601 | return COMMAND_ERR; |
| 1602 | |
| 1603 | printf("Sub-Partition %s(%d), entry(%s) stored in %s.\n", |
| 1604 | param.subpart_name, type, param.dentry_name, param.file_name); |
| 1605 | |
| 1606 | return NO_ACTION_REQUIRED; |
| 1607 | } |
| 1608 | |
| 1609 | static enum ifwi_ret ifwi_raw_extract(int type) |
| 1610 | { |
| 1611 | if (buffer_write_file(&ifwi_image.subpart_buf[type], param.file_name)) |
| 1612 | return COMMAND_ERR; |
| 1613 | |
| 1614 | printf("Sub-Partition %s(%d) stored in %s.\n", param.subpart_name, type, |
| 1615 | param.file_name); |
| 1616 | |
| 1617 | return NO_ACTION_REQUIRED; |
| 1618 | } |
| 1619 | |
| 1620 | static enum ifwi_ret ifwi_extract(void) |
| 1621 | { |
| 1622 | if (!param.file_name) { |
| 1623 | ERROR("%s: -f option required\n", __func__); |
| 1624 | return COMMAND_ERR; |
| 1625 | } |
| 1626 | |
| 1627 | if (!param.subpart_name) { |
| 1628 | ERROR("%s: -n option required\n", __func__); |
| 1629 | return COMMAND_ERR; |
| 1630 | } |
| 1631 | |
| 1632 | int type = find_type_by_name(param.subpart_name); |
| 1633 | if (type == -1) |
| 1634 | return COMMAND_ERR; |
| 1635 | |
| 1636 | if (type == S_BPDT_TYPE) { |
| 1637 | INFO("Tool does not support raw extract for %s\n", |
| 1638 | param.subpart_name); |
| 1639 | return NO_ACTION_REQUIRED; |
| 1640 | } |
| 1641 | |
| 1642 | if (buffer_size(&ifwi_image.subpart_buf[type]) == 0) { |
| 1643 | ERROR("Image does not contain sub-partition %s(%d).\n", |
| 1644 | param.subpart_name, type); |
| 1645 | return COMMAND_ERR; |
| 1646 | } |
| 1647 | |
| 1648 | INFO("Extracting sub-partition %s(%d).\n", param.subpart_name, type); |
| 1649 | if (param.dir_ops) |
| 1650 | return ifwi_dir_extract(type); |
| 1651 | |
| 1652 | return ifwi_raw_extract(type); |
| 1653 | } |
| 1654 | |
| 1655 | static enum ifwi_ret ifwi_print(void) |
| 1656 | { |
| 1657 | verbose += 2; |
| 1658 | |
| 1659 | struct bpdt *b = buffer_get(&ifwi_image.bpdt); |
| 1660 | |
| 1661 | bpdt_print_header(&b->h, "BPDT"); |
| 1662 | bpdt_print_entries(&b->e[0], b->h.descriptor_count, "BPDT"); |
| 1663 | |
| 1664 | b = buffer_get(&ifwi_image.subpart_buf[S_BPDT_TYPE]); |
| 1665 | bpdt_print_header(&b->h, "S-BPDT"); |
| 1666 | bpdt_print_entries(&b->e[0], b->h.descriptor_count, "S-BPDT"); |
| 1667 | |
| 1668 | if (param.dir_ops == 0) { |
| 1669 | verbose -= 2; |
| 1670 | return NO_ACTION_REQUIRED; |
| 1671 | } |
| 1672 | |
| 1673 | int i; |
| 1674 | struct buffer subpart_dir_buf; |
| 1675 | for (i = 0; i < MAX_SUBPARTS ; i++) { |
| 1676 | if (!(subparts[i].attr & CONTAINS_DIR) || |
| 1677 | (buffer_size(&ifwi_image.subpart_buf[i]) == 0)) |
| 1678 | continue; |
| 1679 | |
| 1680 | parse_subpart_dir(&subpart_dir_buf, &ifwi_image.subpart_buf[i], |
| 1681 | subparts[i].name); |
| 1682 | buffer_delete(&subpart_dir_buf); |
| 1683 | } |
| 1684 | |
| 1685 | verbose -= 2; |
| 1686 | |
| 1687 | return NO_ACTION_REQUIRED; |
| 1688 | } |
| 1689 | |
| 1690 | static enum ifwi_ret ifwi_raw_replace(int type) |
| 1691 | { |
| 1692 | buffer_delete(&ifwi_image.subpart_buf[type]); |
| 1693 | return ifwi_raw_add(type); |
| 1694 | } |
| 1695 | |
| 1696 | static enum ifwi_ret ifwi_dir_replace(int type) |
| 1697 | { |
| 1698 | if (!(subparts[type].attr & CONTAINS_DIR)) { |
| 1699 | ERROR("Sub-Partition %s(%d) does not support dir ops.\n", |
| 1700 | subparts[type].name, type); |
| 1701 | return COMMAND_ERR; |
| 1702 | } |
| 1703 | |
| 1704 | if (!param.dentry_name) { |
| 1705 | ERROR("%s: -e option required.\n", __func__); |
| 1706 | return COMMAND_ERR; |
| 1707 | } |
| 1708 | |
| 1709 | struct buffer subpart_dir_buf; |
| 1710 | parse_subpart_dir(&subpart_dir_buf, &ifwi_image.subpart_buf[type], |
| 1711 | subparts[type].name); |
| 1712 | |
| 1713 | uint32_t i; |
| 1714 | struct subpart_dir *s = buffer_get(&subpart_dir_buf); |
| 1715 | |
| 1716 | for (i = 0; i < s->h.num_entries; i++) { |
| 1717 | if (!strcmp((char *)s->e[i].name, param.dentry_name)) |
| 1718 | break; |
| 1719 | } |
| 1720 | |
| 1721 | if (i == s->h.num_entries) { |
| 1722 | ERROR("Entry %s not found in subpartition for %s.\n", |
| 1723 | param.dentry_name, param.subpart_name); |
| 1724 | exit(-1); |
| 1725 | } |
| 1726 | |
| 1727 | struct buffer b; |
| 1728 | if (buffer_from_file(&b, param.file_name)) { |
| 1729 | ERROR("Failed to read %s\n", param.file_name); |
| 1730 | exit(-1); |
| 1731 | } |
| 1732 | |
| 1733 | struct buffer dst; |
Rolf Evers-Fischer | eb8b7d6 | 2016-06-13 13:51:41 +0200 | [diff] [blame] | 1734 | size_t dst_size = buffer_size(&ifwi_image.subpart_buf[type]) + |
| 1735 | buffer_size(&b) - s->e[i].length; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1736 | size_t subpart_start = s->e[i].offset; |
| 1737 | size_t subpart_end = s->e[i].offset + s->e[i].length; |
| 1738 | |
| 1739 | alloc_buffer(&dst, dst_size, ifwi_image.subpart_buf[type].name); |
| 1740 | |
| 1741 | uint8_t *src_data = buffer_get(&ifwi_image.subpart_buf[type]); |
| 1742 | uint8_t *dst_data = buffer_get(&dst); |
| 1743 | size_t curr_offset = 0; |
| 1744 | |
| 1745 | /* Copy data before the sub-partition entry. */ |
| 1746 | memcpy(dst_data + curr_offset, src_data, subpart_start); |
| 1747 | curr_offset += subpart_start; |
| 1748 | |
| 1749 | /* Copy sub-partition entry. */ |
| 1750 | memcpy(dst_data + curr_offset, buffer_get(&b), buffer_size(&b)); |
| 1751 | curr_offset += buffer_size(&b); |
| 1752 | |
| 1753 | /* Copy remaining data. */ |
| 1754 | memcpy(dst_data + curr_offset, src_data + subpart_end, |
| 1755 | buffer_size(&ifwi_image.subpart_buf[type]) - subpart_end); |
| 1756 | |
| 1757 | /* Update sub-partition buffer. */ |
| 1758 | int offset = s->e[i].offset; |
| 1759 | buffer_delete(&ifwi_image.subpart_buf[type]); |
| 1760 | ifwi_image.subpart_buf[type] = dst; |
| 1761 | |
| 1762 | /* Update length of entry in the subpartition. */ |
| 1763 | s->e[i].length = buffer_size(&b); |
| 1764 | buffer_delete(&b); |
| 1765 | |
| 1766 | /* Adjust offsets of affected entries in subpartition. */ |
| 1767 | offset = s->e[i].offset - offset; |
| 1768 | for (; i < s->h.num_entries; i++) { |
| 1769 | s->e[i].offset += offset; |
| 1770 | } |
| 1771 | |
Furquan Shaikh | e51c20b | 2016-06-15 08:01:10 -0700 | [diff] [blame] | 1772 | /* Re-calculate checksum. */ |
| 1773 | s->h.checksum = calc_checksum(s); |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1774 | |
| 1775 | /* Convert members to litte-endian. */ |
| 1776 | subpart_dir_fixup_write_buffer(&subpart_dir_buf); |
| 1777 | |
| 1778 | memcpy(dst_data, buffer_get(&subpart_dir_buf), |
| 1779 | buffer_size(&subpart_dir_buf)); |
| 1780 | |
| 1781 | buffer_delete(&subpart_dir_buf); |
| 1782 | |
| 1783 | printf("Sub-partition %s(%d) entry %s replaced from file %s.\n", |
| 1784 | param.subpart_name, type, param.dentry_name, param.file_name); |
| 1785 | |
| 1786 | return REPACK_REQUIRED; |
| 1787 | } |
| 1788 | |
| 1789 | static enum ifwi_ret ifwi_replace(void) |
| 1790 | { |
| 1791 | if (!param.file_name) { |
| 1792 | ERROR("%s: -f option required\n", __func__); |
| 1793 | return COMMAND_ERR; |
| 1794 | } |
| 1795 | |
| 1796 | if (!param.subpart_name) { |
| 1797 | ERROR("%s: -n option required\n", __func__); |
| 1798 | return COMMAND_ERR; |
| 1799 | } |
| 1800 | |
| 1801 | int type = find_type_by_name(param.subpart_name); |
| 1802 | if (type == -1) |
| 1803 | return COMMAND_ERR; |
| 1804 | |
| 1805 | const struct subpart_info *curr_subpart = &subparts[type]; |
| 1806 | |
| 1807 | if (curr_subpart->attr & AUTO_GENERATED) { |
| 1808 | ERROR("Cannot replace auto-generated sub-partitions.\n"); |
| 1809 | return COMMAND_ERR; |
| 1810 | } |
| 1811 | |
| 1812 | if (buffer_size(&ifwi_image.subpart_buf[type]) == 0) { |
| 1813 | ERROR("Image does not contain sub-partition %s(%d).\n", |
| 1814 | param.subpart_name, type); |
| 1815 | return COMMAND_ERR; |
| 1816 | } |
| 1817 | |
| 1818 | if (param.dir_ops) |
| 1819 | return ifwi_dir_replace(type); |
| 1820 | |
| 1821 | return ifwi_raw_replace(type); |
| 1822 | } |
| 1823 | |
| 1824 | static enum ifwi_ret ifwi_create(void) |
| 1825 | { |
| 1826 | /* |
| 1827 | * Create peels off any non-IFWI content present in the input buffer and |
| 1828 | * creates output file with only the IFWI present. |
| 1829 | */ |
| 1830 | |
| 1831 | if (!param.file_name) { |
| 1832 | ERROR("%s: -f option required\n", __func__); |
| 1833 | return COMMAND_ERR; |
| 1834 | } |
| 1835 | |
| 1836 | /* Peel off any non-IFWI prefix. */ |
| 1837 | buffer_seek(&ifwi_image.input_buff, |
| 1838 | ifwi_image.input_ifwi_start_offset); |
| 1839 | /* Peel off any non-IFWI suffix. */ |
| 1840 | buffer_set_size(&ifwi_image.input_buff, |
| 1841 | ifwi_image.input_ifwi_end_offset - |
| 1842 | ifwi_image.input_ifwi_start_offset); |
| 1843 | |
| 1844 | /* |
| 1845 | * Adjust start and end offset of IFWI now that non-IFWI prefix is gone. |
| 1846 | */ |
| 1847 | ifwi_image.input_ifwi_end_offset -= ifwi_image.input_ifwi_start_offset; |
| 1848 | ifwi_image.input_ifwi_start_offset = 0; |
| 1849 | |
| 1850 | param.image_name = param.file_name; |
| 1851 | |
| 1852 | return REPACK_REQUIRED; |
| 1853 | } |
| 1854 | |
| 1855 | struct command { |
| 1856 | const char *name; |
| 1857 | const char *optstring; |
| 1858 | enum ifwi_ret (*function)(void); |
| 1859 | }; |
| 1860 | |
| 1861 | static const struct command commands[] = { |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1862 | {"add", "f:n:e:dsvh?", ifwi_add}, |
| 1863 | {"create", "f:svh?", ifwi_create}, |
| 1864 | {"delete", "f:n:svh?", ifwi_delete}, |
| 1865 | {"extract", "f:n:e:dsvh?", ifwi_extract}, |
| 1866 | {"print", "dsh?", ifwi_print}, |
| 1867 | {"replace", "f:n:e:dsvh?", ifwi_replace}, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1868 | }; |
| 1869 | |
| 1870 | static struct option long_options[] = { |
| 1871 | {"subpart_dentry", required_argument, 0, 'e'}, |
| 1872 | {"file", required_argument, 0, 'f'}, |
| 1873 | {"help", required_argument, 0, 'h'}, |
| 1874 | {"name", required_argument, 0, 'n'}, |
| 1875 | {"dir_ops", no_argument, 0, 'd'}, |
| 1876 | {"verbose", no_argument, 0, 'v'}, |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1877 | {"second_lbp", no_argument, 0, 's'}, |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1878 | {NULL, 0, 0, 0 } |
| 1879 | }; |
| 1880 | |
| 1881 | static void usage(const char *name) |
| 1882 | { |
| 1883 | printf("ifwitool: Utility for IFWI manipulation\n\n" |
| 1884 | "USAGE:\n" |
| 1885 | " %s [-h]\n" |
| 1886 | " %s FILE COMMAND [PARAMETERS]\n\n" |
| 1887 | "COMMANDs:\n" |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1888 | " add -f FILE -n NAME [-d -e ENTRY] [-s]\n" |
| 1889 | " create -f FILE [-s]\n" |
| 1890 | " delete -n NAME [-s]\n" |
| 1891 | " extract -f FILE -n NAME [-d -e ENTRY] [-s]\n" |
| 1892 | " print [-d] [-s]\n" |
| 1893 | " replace -f FILE -n NAME [-d -e ENTRY] [-s]\n" |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1894 | "OPTIONs:\n" |
| 1895 | " -f FILE : File to read/write/create/extract\n" |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1896 | " -s : Use the second Logical Boot Partition\n" |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1897 | " -d : Perform directory operation\n" |
| 1898 | " -e ENTRY: Name of directory entry to operate on\n" |
| 1899 | " -v : Verbose level\n" |
| 1900 | " -h : Help message\n" |
| 1901 | " -n NAME : Name of sub-partition to operate on\n", |
| 1902 | name, name |
| 1903 | ); |
| 1904 | |
| 1905 | printf("\nNAME should be one of:\n"); |
| 1906 | int i; |
| 1907 | for (i = 0; i < MAX_SUBPARTS; i++) |
| 1908 | printf("%s(%s)\n", subparts[i].name, subparts[i].readable_name); |
| 1909 | printf("\n"); |
| 1910 | } |
| 1911 | |
| 1912 | int main(int argc, char **argv) |
| 1913 | { |
| 1914 | if (argc < 3) { |
| 1915 | usage(argv[0]); |
| 1916 | return 1; |
| 1917 | } |
| 1918 | |
| 1919 | param.image_name = argv[1]; |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1920 | param.logical_boot_partition = LBP1; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1921 | char *cmd = argv[2]; |
| 1922 | optind += 2; |
| 1923 | |
| 1924 | uint32_t i; |
| 1925 | |
| 1926 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
| 1927 | if (strcmp(cmd, commands[i].name) != 0) |
| 1928 | continue; |
| 1929 | |
| 1930 | int c; |
| 1931 | |
| 1932 | while (1) { |
| 1933 | int option_index; |
| 1934 | |
| 1935 | c = getopt_long(argc, argv, commands[i].optstring, |
| 1936 | long_options, &option_index); |
| 1937 | |
| 1938 | if (c == -1) |
| 1939 | break; |
| 1940 | |
| 1941 | /* Filter out illegal long options. */ |
| 1942 | if (strchr(commands[i].optstring, c) == NULL) { |
| 1943 | ERROR("%s: invalid option -- '%c'\n", argv[0], |
| 1944 | c); |
| 1945 | c = '?'; |
| 1946 | } |
| 1947 | |
Furquan Shaikh | 55d2e53 | 2016-05-31 11:02:47 -0700 | [diff] [blame] | 1948 | switch (c) { |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1949 | case 'n': |
| 1950 | param.subpart_name = optarg; |
| 1951 | break; |
Jeremy Compostella | 31e2188 | 2019-12-09 17:02:45 -0700 | [diff] [blame] | 1952 | case 's': |
| 1953 | param.logical_boot_partition = LBP2; |
| 1954 | break; |
Furquan Shaikh | 233f1b6 | 2016-05-19 16:12:16 -0700 | [diff] [blame] | 1955 | case 'f': |
| 1956 | param.file_name = optarg; |
| 1957 | break; |
| 1958 | case 'd': |
| 1959 | param.dir_ops = 1; |
| 1960 | break; |
| 1961 | case 'e': |
| 1962 | param.dentry_name = optarg; |
| 1963 | break; |
| 1964 | case 'v': |
| 1965 | verbose++; |
| 1966 | break; |
| 1967 | case 'h': |
| 1968 | case '?': |
| 1969 | usage(argv[0]); |
| 1970 | return 1; |
| 1971 | default: |
| 1972 | break; |
| 1973 | } |
| 1974 | } |
| 1975 | |
| 1976 | if (ifwi_parse()) { |
| 1977 | ERROR("%s: ifwi parsing failed\n", argv[0]); |
| 1978 | return 1; |
| 1979 | } |
| 1980 | |
| 1981 | enum ifwi_ret ret = commands[i].function(); |
| 1982 | |
| 1983 | if (ret == COMMAND_ERR) { |
| 1984 | ERROR("%s: failed execution\n", argv[0]); |
| 1985 | return 1; |
| 1986 | } |
| 1987 | |
| 1988 | if (ret == REPACK_REQUIRED) |
| 1989 | ifwi_repack(); |
| 1990 | |
| 1991 | return 0; |
| 1992 | } |
| 1993 | |
| 1994 | ERROR("%s: invalid command\n", argv[0]); |
| 1995 | return 1; |
| 1996 | } |