Manojkiran Eda | 9a8e497 | 2022-11-28 16:38:21 +0530 | [diff] [blame] | 1 | #include "bios_table.h" |
| 2 | #include "base.h" |
| 3 | #include "bios.h" |
| 4 | #include "utils.h" |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 5 | #include <assert.h> |
| 6 | #include <endian.h> |
| 7 | #include <stdbool.h> |
| 8 | #include <stdint.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 12 | #define POINTER_CHECK(pointer) \ |
| 13 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 14 | if ((pointer) == NULL) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 15 | return PLDM_ERROR_INVALID_DATA; \ |
| 16 | } while (0) |
| 17 | |
| 18 | #define ATTR_TYPE_EXPECT(type, expected) \ |
| 19 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 20 | if ((type) != (expected) && (type) != ((expected) | 0x80)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 21 | return PLDM_ERROR_INVALID_DATA; \ |
| 22 | } while (0) |
| 23 | |
| 24 | #define BUFFER_SIZE_EXPECT(current_size, expected_size) \ |
| 25 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 26 | if ((current_size) < (expected_size)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 27 | return PLDM_ERROR_INVALID_LENGTH; \ |
| 28 | } while (0) |
| 29 | |
| 30 | #define MEMBER_SIZE(type, member) sizeof(((struct type *)0)->member) |
| 31 | |
| 32 | static void set_errmsg(const char **errmsg, const char *msg) |
| 33 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 34 | if (errmsg != NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 35 | *errmsg = msg; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 36 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 37 | } |
| 38 | |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 39 | static int get_bios_string_handle(uint16_t *val) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 40 | { |
| 41 | static uint16_t handle = 0; |
| 42 | assert(handle != UINT16_MAX); |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 43 | if (handle == UINT16_MAX) { |
| 44 | return PLDM_ERROR_INVALID_DATA; |
| 45 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 46 | |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 47 | *val = handle++; |
| 48 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 49 | } |
| 50 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 51 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 52 | size_t pldm_bios_table_string_entry_encode_length(uint16_t string_length) |
| 53 | { |
| 54 | return sizeof(struct pldm_bios_string_table_entry) - |
| 55 | MEMBER_SIZE(pldm_bios_string_table_entry, name) + string_length; |
| 56 | } |
| 57 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 58 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 59 | int pldm_bios_table_string_entry_encode_check(void *entry, size_t entry_length, |
| 60 | const char *str, |
| 61 | uint16_t str_length) |
| 62 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 63 | if (str_length == 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 64 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 65 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 66 | POINTER_CHECK(entry); |
| 67 | POINTER_CHECK(str); |
| 68 | size_t length = pldm_bios_table_string_entry_encode_length(str_length); |
| 69 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 70 | struct pldm_bios_string_table_entry *string_entry = entry; |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 71 | uint16_t handle; |
| 72 | int rc = get_bios_string_handle(&handle); |
| 73 | if (rc != PLDM_SUCCESS) { |
| 74 | return rc; |
| 75 | } |
| 76 | string_entry->string_handle = htole16(handle); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 77 | string_entry->string_length = htole16(str_length); |
| 78 | memcpy(string_entry->name, str, str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 79 | return PLDM_SUCCESS; |
| 80 | } |
| 81 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 82 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 83 | uint16_t pldm_bios_table_string_entry_decode_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 84 | const struct pldm_bios_string_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 85 | { |
| 86 | return le16toh(entry->string_handle); |
| 87 | } |
| 88 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 89 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 90 | uint16_t pldm_bios_table_string_entry_decode_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 91 | const struct pldm_bios_string_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 92 | { |
| 93 | return le16toh(entry->string_length); |
| 94 | } |
| 95 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 96 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 97 | int pldm_bios_table_string_entry_decode_string_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 98 | const struct pldm_bios_string_table_entry *entry, char *buffer, |
| 99 | size_t size) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 100 | { |
| 101 | POINTER_CHECK(entry); |
| 102 | POINTER_CHECK(buffer); |
Andrew Jeffery | 98c1e69 | 2023-06-14 14:41:19 +0930 | [diff] [blame] | 103 | if (size == 0) { |
| 104 | return PLDM_ERROR_INVALID_LENGTH; |
| 105 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 106 | size_t length = |
| 107 | pldm_bios_table_string_entry_decode_string_length(entry); |
| 108 | length = length < (size - 1) ? length : (size - 1); |
| 109 | memcpy(buffer, entry->name, length); |
| 110 | buffer[length] = 0; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 111 | return PLDM_SUCCESS; |
| 112 | } |
| 113 | |
| 114 | static size_t string_table_entry_length(const void *table_entry) |
| 115 | { |
| 116 | const struct pldm_bios_string_table_entry *entry = table_entry; |
| 117 | return sizeof(*entry) - sizeof(entry->name) + |
| 118 | pldm_bios_table_string_entry_decode_string_length(entry); |
| 119 | } |
| 120 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 121 | static int get_bios_attr_handle(uint16_t *val) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 122 | { |
| 123 | static uint16_t handle = 0; |
| 124 | assert(handle != UINT16_MAX); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 125 | if (handle == UINT16_MAX) { |
| 126 | return PLDM_ERROR_INVALID_DATA; |
| 127 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 128 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 129 | *val = handle++; |
| 130 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 131 | } |
| 132 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 133 | static int attr_table_entry_encode_header(void *entry, size_t length, |
| 134 | uint8_t attr_type, |
| 135 | uint16_t string_handle) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 136 | { |
| 137 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 138 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 139 | assert(sizeof(*attr_entry) <= length); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 140 | if (sizeof(*attr_entry) > length) { |
| 141 | return PLDM_ERROR_INVALID_LENGTH; |
| 142 | } |
| 143 | |
| 144 | uint16_t handle; |
| 145 | int rc = get_bios_attr_handle(&handle); |
| 146 | if (rc != PLDM_SUCCESS) { |
| 147 | return rc; |
| 148 | } |
| 149 | |
| 150 | attr_entry->attr_handle = htole16(handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 151 | attr_entry->attr_type = attr_type; |
| 152 | attr_entry->string_handle = htole16(string_handle); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 153 | |
| 154 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 155 | } |
| 156 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 157 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 158 | uint16_t pldm_bios_table_attr_entry_decode_attribute_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 159 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 160 | { |
| 161 | return le16toh(entry->attr_handle); |
| 162 | } |
| 163 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 164 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 165 | uint8_t pldm_bios_table_attr_entry_decode_attribute_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 166 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 167 | { |
| 168 | return entry->attr_type; |
| 169 | } |
| 170 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 171 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 172 | uint16_t pldm_bios_table_attr_entry_decode_string_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 173 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 174 | { |
| 175 | return le16toh(entry->string_handle); |
| 176 | } |
| 177 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 178 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 179 | size_t pldm_bios_table_attr_entry_enum_encode_length(uint8_t pv_num, |
| 180 | uint8_t def_num) |
| 181 | { |
| 182 | return sizeof(struct pldm_bios_attr_table_entry) - |
| 183 | MEMBER_SIZE(pldm_bios_attr_table_entry, metadata) + |
| 184 | sizeof(pv_num) + pv_num * sizeof(uint16_t) + sizeof(def_num) + |
| 185 | def_num; |
| 186 | } |
| 187 | |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 188 | LIBPLDM_ABI_STABLE |
| 189 | int pldm_bios_table_attr_entry_enum_encode_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 190 | void *entry, size_t entry_length, |
| 191 | const struct pldm_bios_table_attr_entry_enum_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 192 | { |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 193 | POINTER_CHECK(entry); |
| 194 | POINTER_CHECK(info); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 195 | size_t length = pldm_bios_table_attr_entry_enum_encode_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 196 | info->pv_num, info->def_num); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 197 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 198 | uint8_t attr_type = info->read_only ? PLDM_BIOS_ENUMERATION_READ_ONLY : |
| 199 | PLDM_BIOS_ENUMERATION; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 200 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 201 | info->name_handle); |
| 202 | if (rc != PLDM_SUCCESS) { |
| 203 | return rc; |
| 204 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 205 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 206 | attr_entry->metadata[0] = info->pv_num; |
| 207 | uint16_t *pv_hdls = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 208 | (uint16_t *)(attr_entry->metadata + 1 /* sizeof(pv num) */); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 209 | size_t i; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 210 | for (i = 0; i < info->pv_num; i++) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 211 | pv_hdls[i] = htole16(info->pv_handle[i]); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 212 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 213 | attr_entry->metadata[1 + info->pv_num * sizeof(uint16_t)] = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 214 | info->def_num; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 215 | memcpy(attr_entry->metadata + 1 /* sizeof(pv num) */ + |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 216 | info->pv_num * sizeof(uint16_t) + 1 /* sizeof(def num)*/, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 217 | info->def_index, info->def_num); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 218 | return PLDM_SUCCESS; |
| 219 | } |
| 220 | |
| 221 | #define ATTR_TYPE_EXPECT(type, expected) \ |
| 222 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 223 | if ((type) != (expected) && (type) != ((expected) | 0x80)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 224 | return PLDM_ERROR_INVALID_DATA; \ |
| 225 | } while (0) |
| 226 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 227 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 228 | int pldm_bios_table_attr_entry_enum_decode_pv_num_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 229 | const struct pldm_bios_attr_table_entry *entry, uint8_t *pv_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 230 | { |
| 231 | POINTER_CHECK(entry); |
| 232 | POINTER_CHECK(pv_num); |
| 233 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 234 | *pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 235 | return PLDM_SUCCESS; |
| 236 | } |
| 237 | |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 238 | static uint8_t pldm_bios_table_attr_entry_enum_decode_def_num( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 239 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 240 | { |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 241 | uint8_t pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 242 | return entry->metadata[sizeof(uint8_t) /* pv_num */ + |
| 243 | sizeof(uint16_t) * pv_num]; |
| 244 | } |
| 245 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 246 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 247 | int pldm_bios_table_attr_entry_enum_decode_def_num_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 248 | const struct pldm_bios_attr_table_entry *entry, uint8_t *def_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 249 | { |
| 250 | POINTER_CHECK(entry); |
| 251 | POINTER_CHECK(def_num); |
| 252 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
| 253 | *def_num = pldm_bios_table_attr_entry_enum_decode_def_num(entry); |
| 254 | return PLDM_SUCCESS; |
| 255 | } |
| 256 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 257 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 258 | int pldm_bios_table_attr_entry_enum_decode_pv_hdls_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 259 | const struct pldm_bios_attr_table_entry *entry, uint16_t *pv_hdls, |
| 260 | uint8_t pv_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 261 | { |
| 262 | POINTER_CHECK(entry); |
| 263 | POINTER_CHECK(pv_hdls); |
| 264 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 265 | uint8_t num = entry->metadata[0]; |
| 266 | num = num < pv_num ? num : pv_num; |
| 267 | size_t i; |
| 268 | for (i = 0; i < num; i++) { |
| 269 | uint16_t *hdl = (uint16_t *)(entry->metadata + sizeof(uint8_t) + |
| 270 | i * sizeof(uint16_t)); |
| 271 | pv_hdls[i] = le16toh(*hdl); |
| 272 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 273 | return PLDM_SUCCESS; |
| 274 | } |
| 275 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 276 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 277 | uint8_t pldm_bios_table_attr_entry_enum_decode_def_indices( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 278 | const struct pldm_bios_attr_table_entry *entry, uint8_t *def_indices, |
| 279 | uint8_t def_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 280 | { |
| 281 | uint8_t num = pldm_bios_table_attr_entry_enum_decode_def_num(entry); |
| 282 | num = num < def_num ? num : def_num; |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 283 | uint8_t pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 284 | const uint8_t *p = entry->metadata + |
| 285 | sizeof(uint8_t) /* number of possible values*/ |
| 286 | + pv_num * sizeof(uint16_t) /* possible values */ |
| 287 | + sizeof(uint8_t); /* number of default values */ |
| 288 | memcpy(def_indices, p, num); |
| 289 | return num; |
| 290 | } |
| 291 | |
| 292 | /** @brief Get length of an enum attribute entry |
| 293 | */ |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 294 | static size_t attr_table_entry_length_enum(const void *arg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 295 | { |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 296 | const struct pldm_bios_attr_table_entry *entry = arg; |
| 297 | uint8_t pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 298 | uint8_t def_num = pldm_bios_table_attr_entry_enum_decode_def_num(entry); |
| 299 | return pldm_bios_table_attr_entry_enum_encode_length(pv_num, def_num); |
| 300 | } |
| 301 | |
| 302 | struct attr_table_string_entry_fields { |
| 303 | uint8_t string_type; |
| 304 | uint16_t min_length; |
| 305 | uint16_t max_length; |
| 306 | uint16_t def_length; |
| 307 | uint8_t def_string[1]; |
| 308 | } __attribute__((packed)); |
| 309 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 310 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 311 | size_t pldm_bios_table_attr_entry_string_encode_length(uint16_t def_str_len) |
| 312 | { |
| 313 | return sizeof(struct pldm_bios_attr_table_entry) - |
| 314 | MEMBER_SIZE(pldm_bios_attr_table_entry, metadata) + |
| 315 | sizeof(struct attr_table_string_entry_fields) - |
| 316 | MEMBER_SIZE(attr_table_string_entry_fields, def_string) + |
| 317 | def_str_len; |
| 318 | } |
| 319 | |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 320 | #define PLDM_STRING_TYPE_MAX 5 |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 321 | #define PLDM_STRING_TYPE_VENDOR 0xff |
| 322 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 323 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 324 | int pldm_bios_table_attr_entry_string_info_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 325 | const struct pldm_bios_table_attr_entry_string_info *info, |
| 326 | const char **errmsg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 327 | { |
| 328 | if (info->min_length > info->max_length) { |
| 329 | set_errmsg(errmsg, "MinimumStingLength should not be greater " |
| 330 | "than MaximumStringLength"); |
| 331 | return PLDM_ERROR_INVALID_DATA; |
| 332 | } |
| 333 | if (info->min_length == info->max_length && |
| 334 | info->def_length != info->min_length) { |
| 335 | set_errmsg(errmsg, "Wrong DefaultStringLength"); |
| 336 | return PLDM_ERROR_INVALID_DATA; |
| 337 | } |
| 338 | if (info->def_length > info->max_length || |
| 339 | info->def_length < info->min_length) { |
| 340 | set_errmsg(errmsg, "Wrong DefaultStringLength"); |
| 341 | return PLDM_ERROR_INVALID_DATA; |
| 342 | } |
| 343 | if (info->string_type > PLDM_STRING_TYPE_MAX && |
| 344 | info->string_type != PLDM_STRING_TYPE_VENDOR) { |
| 345 | set_errmsg(errmsg, "Wrong StringType"); |
| 346 | return PLDM_ERROR_INVALID_DATA; |
| 347 | } |
Andrew Jeffery | df02e36 | 2023-06-14 14:52:25 +0930 | [diff] [blame] | 348 | if (info->def_string && info->def_length != strlen(info->def_string)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 349 | set_errmsg(errmsg, "Length of DefaultString should be equal to " |
| 350 | "DefaultStringLength"); |
| 351 | return PLDM_ERROR_INVALID_DATA; |
| 352 | } |
| 353 | |
| 354 | return PLDM_SUCCESS; |
| 355 | } |
| 356 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 357 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 358 | int pldm_bios_table_attr_entry_string_encode_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 359 | void *entry, size_t entry_length, |
| 360 | const struct pldm_bios_table_attr_entry_string_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 361 | { |
| 362 | POINTER_CHECK(entry); |
| 363 | POINTER_CHECK(info); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 364 | size_t length = pldm_bios_table_attr_entry_string_encode_length( |
| 365 | info->def_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 366 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 367 | if (pldm_bios_table_attr_entry_string_info_check(info, NULL) != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 368 | PLDM_SUCCESS) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 369 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 370 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 371 | uint8_t attr_type = info->read_only ? PLDM_BIOS_STRING_READ_ONLY : |
| 372 | PLDM_BIOS_STRING; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 373 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 374 | info->name_handle); |
| 375 | if (rc != PLDM_SUCCESS) { |
| 376 | return rc; |
| 377 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 378 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 379 | struct attr_table_string_entry_fields *attr_fields = |
| 380 | (struct attr_table_string_entry_fields *)attr_entry->metadata; |
| 381 | attr_fields->string_type = info->string_type; |
| 382 | attr_fields->min_length = htole16(info->min_length); |
| 383 | attr_fields->max_length = htole16(info->max_length); |
| 384 | attr_fields->def_length = htole16(info->def_length); |
| 385 | if (info->def_length != 0 && info->def_string != NULL) { |
| 386 | memcpy(attr_fields->def_string, info->def_string, |
| 387 | info->def_length); |
| 388 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 389 | return PLDM_SUCCESS; |
| 390 | } |
| 391 | |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 392 | static uint16_t pldm_bios_table_attr_entry_string_decode_def_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 393 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 394 | { |
| 395 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 396 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 397 | return le16toh(fields->def_length); |
| 398 | } |
| 399 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 400 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 401 | int pldm_bios_table_attr_entry_string_decode_def_string_length_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 402 | const struct pldm_bios_attr_table_entry *entry, |
| 403 | uint16_t *def_string_length) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 404 | { |
| 405 | POINTER_CHECK(entry); |
| 406 | POINTER_CHECK(def_string_length); |
| 407 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_STRING); |
| 408 | *def_string_length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 409 | pldm_bios_table_attr_entry_string_decode_def_string_length( |
| 410 | entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 411 | return PLDM_SUCCESS; |
| 412 | } |
| 413 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 414 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 415 | uint8_t pldm_bios_table_attr_entry_string_decode_string_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 416 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 417 | { |
| 418 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 419 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 420 | return fields->string_type; |
| 421 | } |
| 422 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 423 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 424 | uint16_t pldm_bios_table_attr_entry_string_decode_max_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 425 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 426 | { |
| 427 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 428 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 429 | return le16toh(fields->max_length); |
| 430 | } |
| 431 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 432 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 433 | uint16_t pldm_bios_table_attr_entry_string_decode_min_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 434 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 435 | { |
| 436 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 437 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 438 | return le16toh(fields->min_length); |
| 439 | } |
| 440 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 441 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 442 | uint16_t pldm_bios_table_attr_entry_string_decode_def_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 443 | const struct pldm_bios_attr_table_entry *entry, char *buffer, |
| 444 | size_t size) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 445 | { |
| 446 | uint16_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 447 | pldm_bios_table_attr_entry_string_decode_def_string_length( |
| 448 | entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 449 | length = length < (size - 1) ? length : (size - 1); |
| 450 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 451 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 452 | memcpy(buffer, fields->def_string, length); |
| 453 | buffer[length] = 0; |
| 454 | return length; |
| 455 | } |
| 456 | |
| 457 | /** @brief Get length of a string attribute entry |
| 458 | */ |
| 459 | static size_t attr_table_entry_length_string(const void *entry) |
| 460 | { |
| 461 | uint16_t def_str_len = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 462 | pldm_bios_table_attr_entry_string_decode_def_string_length( |
| 463 | entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 464 | return pldm_bios_table_attr_entry_string_encode_length(def_str_len); |
| 465 | } |
| 466 | |
| 467 | struct attr_table_integer_entry_fields { |
| 468 | uint64_t lower_bound; |
| 469 | uint64_t upper_bound; |
| 470 | uint32_t scalar_increment; |
| 471 | uint64_t default_value; |
| 472 | } __attribute__((packed)); |
| 473 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 474 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 319304f | 2023-04-05 13:53:18 +0930 | [diff] [blame] | 475 | size_t pldm_bios_table_attr_entry_integer_encode_length(void) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 476 | { |
| 477 | return sizeof(struct pldm_bios_attr_table_entry) - 1 + |
| 478 | sizeof(struct attr_table_integer_entry_fields); |
| 479 | } |
| 480 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 481 | LIBPLDM_ABI_DEPRECATED |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 482 | void pldm_bios_table_attr_entry_integer_encode( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 483 | void *entry, size_t entry_length, |
| 484 | const struct pldm_bios_table_attr_entry_integer_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 485 | { |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 486 | int rc = pldm_bios_table_attr_entry_integer_encode_check( |
| 487 | entry, entry_length, info); |
| 488 | (void)rc; |
| 489 | assert(rc == PLDM_SUCCESS); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 490 | } |
| 491 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 492 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 493 | int pldm_bios_table_attr_entry_integer_info_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 494 | const struct pldm_bios_table_attr_entry_integer_info *info, |
| 495 | const char **errmsg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 496 | { |
| 497 | if (info->lower_bound == info->upper_bound) { |
| 498 | if (info->default_value != info->lower_bound) { |
| 499 | set_errmsg(errmsg, "Wrong DefaultValue"); |
| 500 | return PLDM_ERROR_INVALID_DATA; |
| 501 | } |
| 502 | if (info->scalar_increment != 0) { |
| 503 | set_errmsg(errmsg, "Wrong ScalarIncrement"); |
| 504 | return PLDM_ERROR_INVALID_DATA; |
| 505 | } |
| 506 | return PLDM_SUCCESS; |
| 507 | } |
| 508 | if (info->lower_bound > info->upper_bound) { |
| 509 | set_errmsg(errmsg, |
| 510 | "LowerBound should not be greater than UpperBound"); |
| 511 | return PLDM_ERROR_INVALID_DATA; |
| 512 | } |
| 513 | if (info->default_value > info->upper_bound || |
| 514 | info->default_value < info->lower_bound) { |
| 515 | set_errmsg(errmsg, "Wrong DefaultValue"); |
| 516 | return PLDM_ERROR_INVALID_DATA; |
| 517 | } |
| 518 | if (info->scalar_increment == 0) { |
| 519 | set_errmsg(errmsg, "ScalarIncrement should not be zero when " |
| 520 | "lower_bound != upper_bound"); |
| 521 | return PLDM_ERROR_INVALID_DATA; |
| 522 | } |
| 523 | if ((info->default_value - info->lower_bound) % |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 524 | info->scalar_increment != |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 525 | 0) { |
| 526 | set_errmsg(errmsg, "Wrong DefaultValue or ScalarIncrement"); |
| 527 | return PLDM_ERROR_INVALID_DATA; |
| 528 | } |
| 529 | return PLDM_SUCCESS; |
| 530 | } |
| 531 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 532 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 533 | int pldm_bios_table_attr_entry_integer_encode_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 534 | void *entry, size_t entry_length, |
| 535 | const struct pldm_bios_table_attr_entry_integer_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 536 | { |
| 537 | POINTER_CHECK(entry); |
| 538 | POINTER_CHECK(info); |
| 539 | size_t length = pldm_bios_table_attr_entry_integer_encode_length(); |
| 540 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 541 | if (pldm_bios_table_attr_entry_integer_info_check(info, NULL) != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 542 | PLDM_SUCCESS) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 543 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 544 | } |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame^] | 545 | uint8_t attr_type = info->read_only ? PLDM_BIOS_INTEGER_READ_ONLY : |
| 546 | PLDM_BIOS_INTEGER; |
| 547 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 548 | info->name_handle); |
| 549 | if (rc != PLDM_SUCCESS) { |
| 550 | return rc; |
| 551 | } |
| 552 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 553 | struct attr_table_integer_entry_fields *attr_fields = |
| 554 | (struct attr_table_integer_entry_fields *)attr_entry->metadata; |
| 555 | attr_fields->lower_bound = htole64(info->lower_bound); |
| 556 | attr_fields->upper_bound = htole64(info->upper_bound); |
| 557 | attr_fields->scalar_increment = htole32(info->scalar_increment); |
| 558 | attr_fields->default_value = htole64(info->default_value); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 559 | return PLDM_SUCCESS; |
| 560 | } |
| 561 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 562 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 563 | void pldm_bios_table_attr_entry_integer_decode( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 564 | const struct pldm_bios_attr_table_entry *entry, uint64_t *lower, |
| 565 | uint64_t *upper, uint32_t *scalar, uint64_t *def) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 566 | { |
| 567 | struct attr_table_integer_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 568 | (struct attr_table_integer_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 569 | *lower = le64toh(fields->lower_bound); |
| 570 | *upper = le64toh(fields->upper_bound); |
| 571 | *scalar = le32toh(fields->scalar_increment); |
| 572 | *def = le64toh(fields->default_value); |
| 573 | } |
| 574 | |
| 575 | static size_t attr_table_entry_length_integer(const void *entry) |
| 576 | { |
| 577 | (void)entry; |
| 578 | return pldm_bios_table_attr_entry_integer_encode_length(); |
| 579 | } |
| 580 | |
| 581 | struct table_entry_length { |
| 582 | uint8_t attr_type; |
| 583 | size_t (*entry_length_handler)(const void *); |
| 584 | }; |
| 585 | |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 586 | #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 587 | |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 588 | static const struct table_entry_length * |
| 589 | find_table_entry_length_by_type(uint8_t attr_type, |
| 590 | const struct table_entry_length *handlers, |
| 591 | size_t count) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 592 | { |
| 593 | size_t i; |
| 594 | for (i = 0; i < count; i++) { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 595 | if (attr_type == handlers[i].attr_type) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 596 | return &handlers[i]; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 597 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 598 | } |
| 599 | return NULL; |
| 600 | } |
| 601 | |
| 602 | static const struct table_entry_length attr_table_entries[] = { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 603 | { .attr_type = PLDM_BIOS_ENUMERATION, |
| 604 | .entry_length_handler = attr_table_entry_length_enum }, |
| 605 | { .attr_type = PLDM_BIOS_ENUMERATION_READ_ONLY, |
| 606 | .entry_length_handler = attr_table_entry_length_enum }, |
| 607 | { .attr_type = PLDM_BIOS_STRING, |
| 608 | .entry_length_handler = attr_table_entry_length_string }, |
| 609 | { .attr_type = PLDM_BIOS_STRING_READ_ONLY, |
| 610 | .entry_length_handler = attr_table_entry_length_string }, |
| 611 | { .attr_type = PLDM_BIOS_INTEGER, |
| 612 | .entry_length_handler = attr_table_entry_length_integer }, |
| 613 | { .attr_type = PLDM_BIOS_INTEGER_READ_ONLY, |
| 614 | .entry_length_handler = attr_table_entry_length_integer }, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 615 | }; |
| 616 | |
| 617 | static size_t attr_table_entry_length(const void *table_entry) |
| 618 | { |
| 619 | const struct pldm_bios_attr_table_entry *entry = table_entry; |
| 620 | const struct table_entry_length *attr_table_entry = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 621 | find_table_entry_length_by_type(entry->attr_type, |
| 622 | attr_table_entries, |
| 623 | ARRAY_SIZE(attr_table_entries)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 624 | assert(attr_table_entry != NULL); |
| 625 | assert(attr_table_entry->entry_length_handler != NULL); |
| 626 | |
| 627 | return attr_table_entry->entry_length_handler(entry); |
| 628 | } |
| 629 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 630 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 631 | uint16_t pldm_bios_table_attr_value_entry_decode_attribute_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 632 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 633 | { |
| 634 | return le16toh(entry->attr_handle); |
| 635 | } |
| 636 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 637 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 638 | uint8_t pldm_bios_table_attr_value_entry_decode_attribute_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 639 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 640 | { |
| 641 | return entry->attr_type; |
| 642 | } |
| 643 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 644 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 645 | size_t pldm_bios_table_attr_value_entry_encode_enum_length(uint8_t count) |
| 646 | { |
| 647 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 648 | sizeof(count) + count; |
| 649 | } |
| 650 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 651 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 652 | void pldm_bios_table_attr_value_entry_encode_enum( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 653 | void *entry, size_t entry_length, uint16_t attr_handle, |
| 654 | uint8_t attr_type, uint8_t count, const uint8_t *handles) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 655 | { |
| 656 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 657 | pldm_bios_table_attr_value_entry_encode_enum_length(count); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 658 | assert(length <= entry_length); |
| 659 | |
| 660 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 661 | table_entry->attr_handle = htole16(attr_handle); |
| 662 | table_entry->attr_type = attr_type; |
| 663 | table_entry->value[0] = count; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 664 | if (count != 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 665 | memcpy(&table_entry->value[1], handles, count); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 666 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 667 | } |
| 668 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 669 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 670 | uint8_t pldm_bios_table_attr_value_entry_enum_decode_number( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 671 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 672 | { |
| 673 | return entry->value[0]; |
| 674 | } |
| 675 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 676 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 677 | uint8_t pldm_bios_table_attr_value_entry_enum_decode_handles( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 678 | const struct pldm_bios_attr_val_table_entry *entry, uint8_t *handles, |
| 679 | uint8_t number) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 680 | { |
| 681 | uint8_t curr_num = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 682 | pldm_bios_table_attr_value_entry_enum_decode_number(entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 683 | number = number < curr_num ? number : curr_num; |
| 684 | memcpy(handles, &entry->value[1], number); |
| 685 | |
| 686 | return number; |
| 687 | } |
| 688 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 689 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 690 | int pldm_bios_table_attr_value_entry_encode_enum_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 691 | void *entry, size_t entry_length, uint16_t attr_handle, |
| 692 | uint8_t attr_type, uint8_t count, uint8_t *handles) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 693 | { |
| 694 | POINTER_CHECK(entry); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 695 | if (count != 0 && handles == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 696 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 697 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 698 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_ENUMERATION); |
| 699 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 700 | pldm_bios_table_attr_value_entry_encode_enum_length(count); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 701 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 702 | pldm_bios_table_attr_value_entry_encode_enum( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 703 | entry, entry_length, attr_handle, attr_type, count, handles); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 704 | return PLDM_SUCCESS; |
| 705 | } |
| 706 | |
| 707 | static size_t attr_value_table_entry_length_enum(const void *entry) |
| 708 | { |
| 709 | uint8_t number = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 710 | pldm_bios_table_attr_value_entry_enum_decode_number(entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 711 | return pldm_bios_table_attr_value_entry_encode_enum_length(number); |
| 712 | } |
| 713 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 714 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 715 | size_t |
| 716 | pldm_bios_table_attr_value_entry_encode_string_length(uint16_t string_length) |
| 717 | { |
| 718 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 719 | sizeof(string_length) + string_length; |
| 720 | } |
| 721 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 722 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 723 | void pldm_bios_table_attr_value_entry_encode_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 724 | void *entry, size_t entry_length, uint16_t attr_handle, |
| 725 | uint8_t attr_type, uint16_t str_length, const char *str) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 726 | { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 727 | size_t length = pldm_bios_table_attr_value_entry_encode_string_length( |
| 728 | str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 729 | assert(length <= entry_length); |
| 730 | |
| 731 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 732 | table_entry->attr_handle = htole16(attr_handle); |
| 733 | table_entry->attr_type = attr_type; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 734 | if (str_length != 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 735 | memcpy(table_entry->value + sizeof(str_length), str, |
| 736 | str_length); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 737 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 738 | str_length = htole16(str_length); |
| 739 | memcpy(table_entry->value, &str_length, sizeof(str_length)); |
| 740 | } |
| 741 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 742 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 743 | uint16_t pldm_bios_table_attr_value_entry_string_decode_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 744 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 745 | { |
| 746 | uint16_t str_length = 0; |
| 747 | memcpy(&str_length, entry->value, sizeof(str_length)); |
| 748 | return le16toh(str_length); |
| 749 | } |
| 750 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 751 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 752 | void pldm_bios_table_attr_value_entry_string_decode_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 753 | const struct pldm_bios_attr_val_table_entry *entry, |
| 754 | struct variable_field *current_string) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 755 | { |
| 756 | current_string->length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 757 | pldm_bios_table_attr_value_entry_string_decode_length(entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 758 | current_string->ptr = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 759 | entry->value + sizeof(uint16_t); // sizeof(CurrentStringLength) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 760 | } |
| 761 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 762 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 763 | int pldm_bios_table_attr_value_entry_encode_string_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 764 | void *entry, size_t entry_length, uint16_t attr_handle, |
| 765 | uint8_t attr_type, uint16_t str_length, const char *str) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 766 | { |
| 767 | POINTER_CHECK(entry); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 768 | if (str_length != 0 && str == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 769 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 770 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 771 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_STRING); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 772 | size_t length = pldm_bios_table_attr_value_entry_encode_string_length( |
| 773 | str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 774 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 775 | pldm_bios_table_attr_value_entry_encode_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 776 | entry, entry_length, attr_handle, attr_type, str_length, str); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 777 | return PLDM_SUCCESS; |
| 778 | } |
| 779 | |
| 780 | static size_t attr_value_table_entry_length_string(const void *entry) |
| 781 | { |
| 782 | uint16_t str_length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 783 | pldm_bios_table_attr_value_entry_string_decode_length(entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 784 | return pldm_bios_table_attr_value_entry_encode_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 785 | str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 786 | } |
| 787 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 788 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 319304f | 2023-04-05 13:53:18 +0930 | [diff] [blame] | 789 | size_t pldm_bios_table_attr_value_entry_encode_integer_length(void) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 790 | { |
| 791 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 792 | sizeof(uint64_t); |
| 793 | } |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 794 | |
| 795 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 796 | void pldm_bios_table_attr_value_entry_encode_integer(void *entry, |
| 797 | size_t entry_length, |
| 798 | uint16_t attr_handle, |
| 799 | uint8_t attr_type, |
| 800 | uint64_t cv) |
| 801 | { |
| 802 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 803 | pldm_bios_table_attr_value_entry_encode_integer_length(); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 804 | assert(length <= entry_length); |
| 805 | |
| 806 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 807 | table_entry->attr_handle = htole16(attr_handle); |
| 808 | table_entry->attr_type = attr_type; |
| 809 | cv = htole64(cv); |
| 810 | memcpy(table_entry->value, &cv, sizeof(uint64_t)); |
| 811 | } |
| 812 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 813 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 814 | int pldm_bios_table_attr_value_entry_encode_integer_check(void *entry, |
| 815 | size_t entry_length, |
| 816 | uint16_t attr_handle, |
| 817 | uint8_t attr_type, |
| 818 | uint64_t cv) |
| 819 | { |
| 820 | POINTER_CHECK(entry); |
| 821 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 822 | pldm_bios_table_attr_value_entry_encode_integer_length(); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 823 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_INTEGER); |
| 824 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 825 | pldm_bios_table_attr_value_entry_encode_integer( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 826 | entry, entry_length, attr_handle, attr_type, cv); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 827 | return PLDM_SUCCESS; |
| 828 | } |
| 829 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 830 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 831 | uint64_t pldm_bios_table_attr_value_entry_integer_decode_cv( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 832 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 833 | { |
| 834 | uint64_t cv = 0; |
| 835 | memcpy(&cv, entry->value, sizeof(cv)); |
| 836 | cv = le64toh(cv); |
| 837 | return cv; |
| 838 | } |
| 839 | |
| 840 | static size_t attr_value_table_entry_length_integer(const void *entry) |
| 841 | { |
| 842 | (void)entry; |
| 843 | return pldm_bios_table_attr_value_entry_encode_integer_length(); |
| 844 | } |
| 845 | |
| 846 | static const struct table_entry_length attr_value_table_entries[] = { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 847 | { .attr_type = PLDM_BIOS_ENUMERATION, |
| 848 | .entry_length_handler = attr_value_table_entry_length_enum }, |
| 849 | { .attr_type = PLDM_BIOS_ENUMERATION_READ_ONLY, |
| 850 | .entry_length_handler = attr_value_table_entry_length_enum }, |
| 851 | { .attr_type = PLDM_BIOS_STRING, |
| 852 | .entry_length_handler = attr_value_table_entry_length_string }, |
| 853 | { .attr_type = PLDM_BIOS_STRING_READ_ONLY, |
| 854 | .entry_length_handler = attr_value_table_entry_length_string }, |
| 855 | { .attr_type = PLDM_BIOS_INTEGER, |
| 856 | .entry_length_handler = attr_value_table_entry_length_integer }, |
| 857 | { .attr_type = PLDM_BIOS_INTEGER_READ_ONLY, |
| 858 | .entry_length_handler = attr_value_table_entry_length_integer }, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 859 | }; |
| 860 | |
| 861 | static size_t attr_value_table_entry_length(const void *table_entry) |
| 862 | { |
| 863 | const struct pldm_bios_attr_val_table_entry *entry = table_entry; |
| 864 | const struct table_entry_length *entry_length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 865 | find_table_entry_length_by_type( |
| 866 | entry->attr_type, attr_value_table_entries, |
| 867 | ARRAY_SIZE(attr_value_table_entries)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 868 | assert(entry_length != NULL); |
| 869 | assert(entry_length->entry_length_handler != NULL); |
| 870 | |
| 871 | return entry_length->entry_length_handler(entry); |
| 872 | } |
| 873 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 874 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 875 | size_t pldm_bios_table_attr_value_entry_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 876 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 877 | { |
| 878 | return attr_value_table_entry_length(entry); |
| 879 | } |
| 880 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 881 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 882 | uint16_t pldm_bios_table_attr_value_entry_decode_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 883 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 884 | { |
| 885 | return le16toh(entry->attr_handle); |
| 886 | } |
| 887 | |
| 888 | static size_t pad_size_get(size_t size_without_pad) |
| 889 | { |
| 890 | return ((size_without_pad % 4) ? (4 - size_without_pad % 4) : 0); |
| 891 | } |
| 892 | |
| 893 | static uint8_t *pad_append(uint8_t *table_end, size_t pad_size) |
| 894 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 895 | while (pad_size--) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 896 | *table_end++ = 0; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 897 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 898 | |
| 899 | return table_end; |
| 900 | } |
| 901 | |
| 902 | static uint8_t *checksum_append(uint8_t *table_end, uint32_t checksum) |
| 903 | { |
| 904 | checksum = htole32(checksum); |
| 905 | memcpy(table_end, &checksum, sizeof(checksum)); |
| 906 | |
| 907 | return table_end + sizeof(checksum); |
| 908 | } |
| 909 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 910 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 911 | size_t pldm_bios_table_pad_checksum_size(size_t size_without_pad) |
| 912 | { |
| 913 | size_t size = pad_size_get(size_without_pad) + |
| 914 | sizeof(uint32_t) /*sizeof(checksum)*/; |
| 915 | return size; |
| 916 | } |
| 917 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 918 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 919 | size_t pldm_bios_table_append_pad_checksum(void *table, size_t size, |
| 920 | size_t size_without_pad) |
| 921 | { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 922 | size_t pad_checksum_size = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 923 | pldm_bios_table_pad_checksum_size(size_without_pad); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 924 | size_t total_length = size_without_pad + pad_checksum_size; |
| 925 | assert(size >= total_length); |
| 926 | |
| 927 | uint8_t *table_end = (uint8_t *)table + size_without_pad; |
| 928 | size_t pad_size = pad_size_get(size_without_pad); |
| 929 | table_end = pad_append(table_end, pad_size); |
| 930 | |
| 931 | uint32_t checksum = crc32(table, size_without_pad + pad_size); |
| 932 | checksum_append(table_end, checksum); |
| 933 | |
| 934 | return total_length; |
| 935 | } |
| 936 | |
| 937 | struct pldm_bios_table_iter { |
| 938 | const uint8_t *table_data; |
| 939 | size_t table_len; |
| 940 | size_t current_pos; |
| 941 | size_t (*entry_length_handler)(const void *table_entry); |
| 942 | }; |
| 943 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 944 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 945 | struct pldm_bios_table_iter * |
| 946 | pldm_bios_table_iter_create(const void *table, size_t length, |
| 947 | enum pldm_bios_table_types type) |
| 948 | { |
| 949 | struct pldm_bios_table_iter *iter = malloc(sizeof(*iter)); |
| 950 | assert(iter != NULL); |
| 951 | iter->table_data = table; |
| 952 | iter->table_len = length; |
| 953 | iter->current_pos = 0; |
| 954 | iter->entry_length_handler = NULL; |
| 955 | switch (type) { |
| 956 | case PLDM_BIOS_STRING_TABLE: |
| 957 | iter->entry_length_handler = string_table_entry_length; |
| 958 | break; |
| 959 | case PLDM_BIOS_ATTR_TABLE: |
| 960 | iter->entry_length_handler = attr_table_entry_length; |
| 961 | break; |
| 962 | case PLDM_BIOS_ATTR_VAL_TABLE: |
| 963 | iter->entry_length_handler = attr_value_table_entry_length; |
| 964 | break; |
| 965 | } |
| 966 | |
| 967 | return iter; |
| 968 | } |
| 969 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 970 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 971 | void pldm_bios_table_iter_free(struct pldm_bios_table_iter *iter) |
| 972 | { |
| 973 | free(iter); |
| 974 | } |
| 975 | |
| 976 | #define pad_and_check_max 7 |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 977 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 978 | bool pldm_bios_table_iter_is_end(const struct pldm_bios_table_iter *iter) |
| 979 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 980 | if (iter->table_len - iter->current_pos <= pad_and_check_max) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 981 | return true; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 982 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 983 | return false; |
| 984 | } |
| 985 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 986 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 987 | void pldm_bios_table_iter_next(struct pldm_bios_table_iter *iter) |
| 988 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 989 | if (pldm_bios_table_iter_is_end(iter)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 990 | return; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 991 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 992 | const void *entry = iter->table_data + iter->current_pos; |
| 993 | iter->current_pos += iter->entry_length_handler(entry); |
| 994 | } |
| 995 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 996 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 997 | const void *pldm_bios_table_iter_value(struct pldm_bios_table_iter *iter) |
| 998 | { |
| 999 | return iter->table_data + iter->current_pos; |
| 1000 | } |
| 1001 | |
| 1002 | typedef bool (*equal_handler)(const void *entry, const void *key); |
| 1003 | |
| 1004 | static const void * |
| 1005 | pldm_bios_table_entry_find_by_iter(struct pldm_bios_table_iter *iter, |
| 1006 | const void *key, equal_handler equal) |
| 1007 | { |
| 1008 | const void *entry; |
| 1009 | while (!pldm_bios_table_iter_is_end(iter)) { |
| 1010 | entry = pldm_bios_table_iter_value(iter); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1011 | if (equal(entry, key)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1012 | return entry; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1013 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1014 | pldm_bios_table_iter_next(iter); |
| 1015 | } |
| 1016 | return NULL; |
| 1017 | } |
| 1018 | |
| 1019 | static const void * |
| 1020 | pldm_bios_table_entry_find_from_table(const void *table, size_t length, |
| 1021 | enum pldm_bios_table_types type, |
| 1022 | equal_handler equal, const void *key) |
| 1023 | { |
| 1024 | struct pldm_bios_table_iter *iter = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1025 | pldm_bios_table_iter_create(table, length, type); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1026 | const void *entry = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1027 | pldm_bios_table_entry_find_by_iter(iter, key, equal); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1028 | pldm_bios_table_iter_free(iter); |
| 1029 | return entry; |
| 1030 | } |
| 1031 | |
| 1032 | static bool string_table_handle_equal(const void *entry, const void *key) |
| 1033 | { |
| 1034 | const struct pldm_bios_string_table_entry *string_entry = entry; |
| 1035 | uint16_t handle = *(uint16_t *)key; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1036 | if (pldm_bios_table_string_entry_decode_handle(string_entry) == |
| 1037 | handle) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1038 | return true; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1039 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1040 | return false; |
| 1041 | } |
| 1042 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1043 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1044 | const struct pldm_bios_string_table_entry * |
| 1045 | pldm_bios_table_string_find_by_handle(const void *table, size_t length, |
| 1046 | uint16_t handle) |
| 1047 | { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1048 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1049 | PLDM_BIOS_STRING_TABLE, |
| 1050 | string_table_handle_equal, |
| 1051 | &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | struct string_equal_arg { |
| 1055 | uint16_t str_length; |
| 1056 | const char *str; |
| 1057 | }; |
| 1058 | |
| 1059 | static bool string_table_string_equal(const void *entry, const void *key) |
| 1060 | { |
| 1061 | const struct pldm_bios_string_table_entry *string_entry = entry; |
| 1062 | const struct string_equal_arg *arg = key; |
| 1063 | if (arg->str_length != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1064 | pldm_bios_table_string_entry_decode_string_length(string_entry)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1065 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1066 | } |
| 1067 | if (memcmp(string_entry->name, arg->str, arg->str_length) != 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1068 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1069 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1070 | return true; |
| 1071 | } |
| 1072 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1073 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1074 | const struct pldm_bios_string_table_entry * |
| 1075 | pldm_bios_table_string_find_by_string(const void *table, size_t length, |
| 1076 | const char *str) |
| 1077 | { |
| 1078 | uint16_t str_length = strlen(str); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1079 | struct string_equal_arg arg = { str_length, str }; |
| 1080 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1081 | PLDM_BIOS_STRING_TABLE, |
| 1082 | string_table_string_equal, |
| 1083 | &arg); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | static bool attr_table_handle_equal(const void *entry, const void *key) |
| 1087 | { |
| 1088 | uint16_t handle = *(uint16_t *)key; |
| 1089 | return pldm_bios_table_attr_entry_decode_attribute_handle(entry) == |
| 1090 | handle; |
| 1091 | } |
| 1092 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1093 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1094 | const struct pldm_bios_attr_table_entry * |
| 1095 | pldm_bios_table_attr_find_by_handle(const void *table, size_t length, |
| 1096 | uint16_t handle) |
| 1097 | { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1098 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1099 | PLDM_BIOS_ATTR_TABLE, |
| 1100 | attr_table_handle_equal, |
| 1101 | &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1102 | } |
| 1103 | |
| 1104 | static bool attr_table_string_handle_equal(const void *entry, const void *key) |
| 1105 | { |
| 1106 | uint16_t handle = *(uint16_t *)key; |
| 1107 | return pldm_bios_table_attr_entry_decode_string_handle(entry) == handle; |
| 1108 | } |
| 1109 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1110 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1111 | const struct pldm_bios_attr_table_entry * |
| 1112 | pldm_bios_table_attr_find_by_string_handle(const void *table, size_t length, |
| 1113 | uint16_t handle) |
| 1114 | { |
| 1115 | return pldm_bios_table_entry_find_from_table( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1116 | table, length, PLDM_BIOS_ATTR_TABLE, |
| 1117 | attr_table_string_handle_equal, &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1118 | } |
| 1119 | |
| 1120 | static bool attr_value_table_handle_equal(const void *entry, const void *key) |
| 1121 | { |
| 1122 | uint16_t handle = *(uint16_t *)key; |
| 1123 | return pldm_bios_table_attr_value_entry_decode_handle(entry) == handle; |
| 1124 | } |
| 1125 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1126 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1127 | const struct pldm_bios_attr_val_table_entry * |
| 1128 | pldm_bios_table_attr_value_find_by_handle(const void *table, size_t length, |
| 1129 | uint16_t handle) |
| 1130 | { |
| 1131 | return pldm_bios_table_entry_find_from_table( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1132 | table, length, PLDM_BIOS_ATTR_VAL_TABLE, |
| 1133 | attr_value_table_handle_equal, &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1134 | } |
| 1135 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1136 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1137 | int pldm_bios_table_attr_value_copy_and_update( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1138 | const void *src_table, size_t src_length, void *dest_table, |
| 1139 | size_t *dest_length, const void *entry, size_t entry_length) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1140 | { |
| 1141 | struct pldm_bios_table_iter *iter = pldm_bios_table_iter_create( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1142 | src_table, src_length, PLDM_BIOS_ATTR_VAL_TABLE); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1143 | |
| 1144 | int rc = PLDM_SUCCESS; |
Andrew Jeffery | fbe61d7 | 2023-04-05 20:28:23 +0930 | [diff] [blame] | 1145 | const struct pldm_bios_attr_val_table_entry *tmp; |
| 1146 | const struct pldm_bios_attr_val_table_entry *to_update = entry; |
| 1147 | size_t buffer_length = *dest_length; |
| 1148 | size_t copied_length = 0; |
| 1149 | size_t length = 0; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1150 | while (!pldm_bios_table_iter_is_end(iter)) { |
| 1151 | tmp = pldm_bios_table_iter_attr_value_entry_value(iter); |
| 1152 | length = attr_value_table_entry_length(tmp); |
| 1153 | |
| 1154 | /* we need the tmp's entry_length here, iter_next will calculate |
| 1155 | * it too, use current_pos directly to avoid calculating it |
| 1156 | * twice */ |
| 1157 | iter->current_pos += length; |
| 1158 | if (tmp->attr_handle == to_update->attr_handle) { |
| 1159 | if (tmp->attr_type != to_update->attr_type) { |
| 1160 | rc = PLDM_ERROR_INVALID_DATA; |
| 1161 | goto out; |
| 1162 | } |
| 1163 | length = entry_length; |
| 1164 | tmp = entry; |
| 1165 | } |
| 1166 | if (copied_length + length > buffer_length) { |
| 1167 | rc = PLDM_ERROR_INVALID_LENGTH; |
| 1168 | goto out; |
| 1169 | } |
| 1170 | memcpy((uint8_t *)dest_table + copied_length, tmp, length); |
| 1171 | copied_length += length; |
| 1172 | } |
| 1173 | |
| 1174 | size_t pad_checksum_size = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1175 | pldm_bios_table_pad_checksum_size(copied_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1176 | if ((pad_checksum_size + copied_length) > buffer_length) { |
| 1177 | rc = PLDM_ERROR_INVALID_LENGTH; |
| 1178 | goto out; |
| 1179 | } |
| 1180 | |
| 1181 | *dest_length = pldm_bios_table_append_pad_checksum( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1182 | dest_table, buffer_length, copied_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1183 | out: |
| 1184 | pldm_bios_table_iter_free(iter); |
| 1185 | return rc; |
| 1186 | } |
| 1187 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1188 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1189 | bool pldm_bios_table_checksum(const uint8_t *table, size_t size) |
| 1190 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1191 | if (table == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1192 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1193 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1194 | |
| 1195 | // 12: BIOSStringHandle(uint16) + BIOSStringLength(uint16) + |
| 1196 | // Variable(4) + checksum(uint32) |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1197 | if (size < 12) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1198 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1199 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1200 | |
| 1201 | uint32_t src_crc = le32toh(*(uint32_t *)(table + size - 4)); |
| 1202 | uint32_t dst_crc = crc32(table, size - 4); |
| 1203 | |
| 1204 | return src_crc == dst_crc; |
| 1205 | } |