Bo Lv | 72d0e90 | 2023-01-02 14:27:34 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
| 2 | /* |
| 3 | * Copyright (c) 2019 Amlogic, Inc. All rights reserved. |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <malloc.h> |
| 8 | #include <linux/err.h> |
| 9 | #include <amlogic/partition_table.h> |
| 10 | #include <linux/libfdt.h> |
| 11 | #include <asm/amlogic/arch/bl31_apis.h> |
| 12 | #include <amlogic/aml_efuse.h> |
| 13 | #include <part_efi.h> |
| 14 | #include <blk.h> |
| 15 | #include <compiler.h> |
| 16 | #include <mmc.h> |
| 17 | #include <amlogic/emmc_partitions.h> |
| 18 | #include <version.h> |
| 19 | #include <amlogic/image_check.h> |
| 20 | |
| 21 | #ifdef CONFIG_MULTI_DTB |
| 22 | extern unsigned long get_multi_dt_entry(unsigned long fdt_addr); |
| 23 | #endif |
| 24 | |
| 25 | #define GPT_SPACE 0X2000 |
| 26 | |
| 27 | struct partitions_data{ |
| 28 | int nr; |
| 29 | struct partitions *parts; |
| 30 | }; |
| 31 | |
| 32 | struct partitions *part_table = NULL; |
| 33 | int parts_total_num; |
| 34 | int has_boot_slot = 0; |
| 35 | int has_system_slot = 0; |
| 36 | bool dynamic_partition = false; |
| 37 | bool vendor_boot_partition = false; |
| 38 | bool is_partition_checked = false; |
| 39 | #if CONFIG_IS_ENABLED(EFI_PARTITION) |
| 40 | bool gpt_partition; |
| 41 | #endif |
| 42 | |
| 43 | int get_partitions_table(struct partitions **table) |
| 44 | { |
| 45 | int ret = 0; |
| 46 | if (part_table && parts_total_num) { |
| 47 | *table = part_table; |
| 48 | ret = parts_total_num; |
| 49 | } |
| 50 | return ret; |
| 51 | } |
| 52 | int get_partition_count(void) |
| 53 | { |
| 54 | return parts_total_num; |
| 55 | } |
| 56 | struct partitions *get_partitions(void) |
| 57 | { |
| 58 | return part_table; |
| 59 | } |
| 60 | |
| 61 | void free_partitions(void) |
| 62 | { |
| 63 | if (part_table) |
| 64 | free(part_table); |
| 65 | part_table = NULL; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | return 0 if dts is valid |
| 70 | other value are falure. |
| 71 | */ |
| 72 | int check_valid_dts(unsigned char *buffer) |
| 73 | { |
| 74 | int ret = -__LINE__; |
| 75 | char *dt_addr; |
| 76 | /* fixme, a work around way */ |
| 77 | #ifndef CONFIG_SKIP_KERNEL_DTB_SECBOOT_CHECK |
| 78 | unsigned char *sbuffer = (unsigned char *)env_get_hex("loadaddr", 0x1000000 + 0x100000); |
| 79 | ulong ncheckoffset = 0; |
| 80 | /* g12a merge to trunk, use trunk code */ |
| 81 | //unsigned char *sbuffer = (unsigned char *)0x1000000; |
| 82 | |
| 83 | if (IS_FEAT_BOOT_VERIFY()) { |
| 84 | memcpy(sbuffer, buffer, AML_DTB_IMG_MAX_SZ); |
| 85 | flush_cache((unsigned long)sbuffer, AML_DTB_IMG_MAX_SZ); |
| 86 | #ifndef CONFIG_IMAGE_CHECK |
| 87 | ret = aml_sec_boot_check(AML_D_P_IMG_DECRYPT, (long unsigned)sbuffer, AML_DTB_IMG_MAX_SZ, 0); |
| 88 | #else |
| 89 | ret = secure_image_check((uint8_t *)(unsigned long)sbuffer, AML_DTB_IMG_MAX_SZ, 0); |
| 90 | ncheckoffset = sizeof(struct aml_boot_header_t); |
| 91 | #endif |
| 92 | if (ret) { |
| 93 | printf("\n %s() %d: Decrypt dtb: Sig Check %d\n", __func__, __LINE__, ret); |
| 94 | return -__LINE__; |
| 95 | } |
| 96 | memcpy(buffer, sbuffer + ncheckoffset, AML_DTB_IMG_MAX_SZ); |
| 97 | } |
| 98 | #endif |
| 99 | #ifdef CONFIG_MULTI_DTB |
| 100 | dt_addr = (char *)get_multi_dt_entry((unsigned long)buffer); |
| 101 | #else |
| 102 | dt_addr = (char *)buffer; |
| 103 | #endif |
| 104 | pr_debug("start dts,buffer=%p,dt_addr=%p\n", buffer, dt_addr); |
| 105 | ret = fdt_check_header(dt_addr); |
| 106 | if ( ret < 0 ) |
| 107 | printf("%s: %s\n",__func__,fdt_strerror(ret)); |
| 108 | /* fixme, is it 0 when ok? */ |
| 109 | return ret; |
| 110 | } |
| 111 | |
| 112 | #if CONFIG_IS_ENABLED(EFI_PARTITION) |
| 113 | int parse_gpt(struct blk_desc *dev_desc, void *buf) |
| 114 | { |
| 115 | gpt_header *gpt_h; |
| 116 | gpt_entry *gpt_e; |
| 117 | size_t efiname_len, dosname_len; |
| 118 | int parts_num = 0; |
| 119 | int i, k; |
| 120 | |
| 121 | /* determine start of GPT Header in the buffer */ |
| 122 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * |
| 123 | dev_desc->blksz); |
| 124 | |
| 125 | /* determine start of GPT Entries in the buffer */ |
| 126 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * |
| 127 | dev_desc->blksz); |
| 128 | |
| 129 | parts_num = le32_to_cpu(gpt_h->num_partition_entries); |
| 130 | if (parts_num > 0) { |
| 131 | part_table = (struct partitions *) |
| 132 | malloc(sizeof(struct partitions) * parts_num); |
| 133 | if (!part_table) { |
| 134 | printf("%s part_table alloc _err\n", __func__); |
| 135 | return -1; |
| 136 | } |
| 137 | memset(part_table, 0, sizeof(struct partitions) * parts_num); |
| 138 | parts_total_num = parts_num; |
| 139 | } |
| 140 | |
| 141 | dynamic_partition = false; |
| 142 | env_set("partition_mode", "normal"); |
| 143 | vendor_boot_partition = false; |
| 144 | env_set("vendor_boot_mode", "false"); |
| 145 | |
| 146 | for (i = 0; i < parts_num; i++) { |
| 147 | if (!is_pte_valid(&gpt_e[i])) { |
| 148 | free(part_table); |
| 149 | return -1; |
| 150 | } |
| 151 | |
| 152 | part_table[i].offset = le64_to_cpu(gpt_e[i].starting_lba << 9ULL); |
| 153 | part_table[i].size = ((le64_to_cpu(gpt_e[i].ending_lba) + 1) - |
| 154 | le64_to_cpu(gpt_e[i].starting_lba)) << 9ULL; |
| 155 | /* mask flag */ |
| 156 | part_table[i].mask_flags = |
| 157 | (uint32_t)le64_to_cpu(gpt_e[i].attributes.fields.type_guid_specific); |
| 158 | /* partition name */ |
| 159 | efiname_len = sizeof(gpt_e[i].partition_name) / sizeof(efi_char16_t); |
| 160 | dosname_len = sizeof(part_table[i].name); |
| 161 | |
| 162 | memset(part_table[i].name, 0, sizeof(part_table[i].name)); |
| 163 | for (k = 0; k < min(dosname_len, efiname_len); k++) |
| 164 | part_table[i].name[k] = (char)gpt_e[i].partition_name[k]; |
| 165 | |
| 166 | if (strcmp(part_table[i].name, "boot_a") == 0) { |
| 167 | has_boot_slot = 1; |
| 168 | printf("set has_boot_slot = 1\n"); |
| 169 | } else if (strcmp(part_table[i].name, "boot") == 0) { |
| 170 | has_boot_slot = 0; |
| 171 | printf("set has_boot_slot = 0\n"); |
| 172 | } |
| 173 | |
| 174 | if (strcmp(part_table[i].name, "system_a") == 0) |
| 175 | has_system_slot = 1; |
| 176 | else if (strcmp(part_table[i].name, "system") == 0) |
| 177 | has_system_slot = 0; |
| 178 | |
| 179 | if (strcmp(part_table[i].name, "super") == 0) { |
| 180 | dynamic_partition = true; |
| 181 | env_set("partition_mode", "dynamic"); |
| 182 | printf("enable dynamic_partition\n"); |
| 183 | } |
| 184 | |
| 185 | if (strncmp(part_table[i].name, "vendor_boot", 11) == 0) { |
| 186 | vendor_boot_partition = true; |
| 187 | env_set("vendor_boot_mode", "true"); |
| 188 | printf("enable vendor_boot\n"); |
| 189 | } |
| 190 | } |
| 191 | is_partition_checked = false; |
| 192 | return 0; |
| 193 | } |
| 194 | #endif |
| 195 | |
| 196 | int get_partition_from_dts(unsigned char *buffer) |
| 197 | { |
| 198 | char *dt_addr; |
| 199 | int nodeoffset,poffset=0; |
| 200 | int *parts_num; |
| 201 | char propname[8]; |
| 202 | const uint32_t *phandle; |
| 203 | const char *uname; |
| 204 | const char *usize; |
| 205 | const char *umask; |
| 206 | int index; |
| 207 | int ret = -1; |
| 208 | #if CONFIG_IS_ENABLED(EFI_PARTITION) |
| 209 | struct blk_desc *dev_desc; |
| 210 | |
| 211 | if (!buffer) |
| 212 | goto _err; |
| 213 | |
| 214 | dev_desc = (struct blk_desc *)malloc(sizeof(struct blk_desc)); |
| 215 | if (!dev_desc) |
| 216 | goto _err; |
| 217 | |
| 218 | dev_desc->blksz = MMC_BLOCK_SIZE; |
| 219 | dev_desc->lba = GPT_SPACE; |
| 220 | |
| 221 | if (!is_valid_gpt_buf(dev_desc, buffer)) { |
| 222 | if (!parse_gpt(dev_desc, buffer)) { |
| 223 | gpt_partition = true; |
| 224 | free(dev_desc); |
| 225 | return 0; |
| 226 | } |
| 227 | } |
| 228 | free(dev_desc); |
| 229 | #endif |
| 230 | |
| 231 | ret = check_valid_dts(buffer); |
| 232 | printf("%s() %d: ret %d\n",__func__, __LINE__, ret); |
| 233 | if ( ret < 0 ) |
| 234 | { |
| 235 | printf("%s() %d: ret %d\n",__func__, __LINE__, ret); |
| 236 | goto _err; |
| 237 | } |
| 238 | #ifdef CONFIG_MULTI_DTB |
| 239 | dt_addr = (char *)get_multi_dt_entry((unsigned long)buffer); |
| 240 | #else |
| 241 | dt_addr = (char *)buffer; |
| 242 | #endif |
| 243 | nodeoffset = fdt_path_offset(dt_addr, "/partitions"); |
| 244 | if (nodeoffset < 0) |
| 245 | { |
| 246 | printf("%s: not find /partitions node %s.\n",__func__,fdt_strerror(nodeoffset)); |
| 247 | ret = -1; |
| 248 | goto _err; |
| 249 | } |
| 250 | parts_num = (int *)fdt_getprop(dt_addr, nodeoffset, "parts", NULL); |
| 251 | if (!parts_num) { |
| 252 | printf("%s parts_num _err\n", __func__); |
| 253 | return -1; |
| 254 | } |
| 255 | |
| 256 | printf("parts: %d\n", be32_to_cpup((u32 *)parts_num)); |
| 257 | if (*parts_num > 0) { |
| 258 | part_table = (struct partitions *)malloc(sizeof(struct partitions) * |
| 259 | (be32_to_cpup((u32 *)parts_num))); |
| 260 | if (!part_table) { |
| 261 | printf("%s part_table alloc _err\n", __func__); |
| 262 | return -1; |
| 263 | } |
| 264 | memset(part_table, 0, sizeof(struct partitions)*(be32_to_cpup((u32*)parts_num))); |
| 265 | parts_total_num = be32_to_cpup((u32*)parts_num); |
| 266 | } |
| 267 | dynamic_partition = false; |
| 268 | env_set("partition_mode","normal"); |
| 269 | vendor_boot_partition = false; |
| 270 | env_set("vendor_boot_mode","false"); |
| 271 | for (index = 0; index < be32_to_cpup((u32*)parts_num); index++) |
| 272 | { |
| 273 | sprintf(propname,"part-%d", index); |
| 274 | |
| 275 | phandle = fdt_getprop(dt_addr, nodeoffset, propname, NULL); |
| 276 | if (!phandle) { |
| 277 | printf("don't find match part-%d\n",index); |
| 278 | goto _err; |
| 279 | } |
| 280 | if (phandle) { |
| 281 | poffset = fdt_node_offset_by_phandle(dt_addr, be32_to_cpup((u32*)phandle)); |
| 282 | if (!poffset) { |
| 283 | printf("%s:%d,can't find device node\n",__func__,__LINE__); |
| 284 | goto _err; |
| 285 | } |
| 286 | } |
| 287 | uname = fdt_getprop(dt_addr, poffset, "pname", NULL); |
| 288 | //printf("%s:%d uname: %s\n",__func__,__LINE__, uname); |
| 289 | /* a string but not */ |
| 290 | usize = fdt_getprop(dt_addr, poffset, "size", NULL); |
| 291 | //printf("%s:%d size: 0x%x 0x%x\n",__func__,__LINE__, be32_to_cpup((u32*)usize), be32_to_cpup((((u32*)usize)+1))); |
| 292 | umask = fdt_getprop(dt_addr, poffset, "mask", NULL); |
| 293 | //printf("%s:%d mask: 0x%x\n",__func__,__LINE__, be32_to_cpup((u32*)umask)); |
| 294 | /* fill partition table */ |
| 295 | if (uname != NULL) |
| 296 | memcpy(part_table[index].name, uname, strlen(uname)); |
| 297 | part_table[index].size = ((unsigned long)be32_to_cpup((u32*)usize) << 32) | (unsigned long)be32_to_cpup((((u32*)usize)+1)); |
| 298 | part_table[index].mask_flags = be32_to_cpup((u32*)umask); |
| 299 | printf("%02d:%10s\t%016llx %01x\n", index, uname, part_table[index].size, part_table[index].mask_flags); |
| 300 | |
| 301 | if (strcmp(uname, "boot_a") == 0) { |
| 302 | has_boot_slot = 1; |
| 303 | printf("set has_boot_slot = 1\n"); |
| 304 | } |
| 305 | else if (strcmp(uname, "boot") == 0) { |
| 306 | has_boot_slot = 0; |
| 307 | printf("set has_boot_slot = 0\n"); |
| 308 | } |
| 309 | if (strcmp(uname, "system_a") == 0) |
| 310 | has_system_slot = 1; |
| 311 | else if (strcmp(uname, "system") == 0) |
| 312 | has_system_slot = 0; |
| 313 | |
| 314 | if (strcmp(uname, "super") == 0) { |
| 315 | dynamic_partition = true; |
| 316 | env_set("partition_mode","dynamic"); |
| 317 | printf("enable dynamic_partition\n"); |
| 318 | } |
| 319 | |
| 320 | if (strncmp(uname, "vendor_boot", 11) == 0) { |
| 321 | vendor_boot_partition = true; |
| 322 | env_set("vendor_boot_mode","true"); |
| 323 | printf("enable vendor_boot\n"); |
| 324 | } |
| 325 | } |
| 326 | /*enable mmc_device_init when dtb is update from ddr*/ |
| 327 | is_partition_checked = false; |
| 328 | return 0; |
| 329 | |
| 330 | _err: |
| 331 | if (part_table != NULL) { |
| 332 | free(part_table); |
| 333 | part_table = NULL; |
| 334 | } |
| 335 | return ret; |
| 336 | } |