Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU S390 bootmap interpreter -- declarations |
| 3 | * |
| 4 | * Copyright 2014 IBM Corp. |
| 5 | * Author(s): Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> |
| 6 | * |
| 7 | * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| 8 | * your option) any later version. See the COPYING file in the top-level |
| 9 | * directory. |
| 10 | */ |
| 11 | #ifndef _PC_BIOS_S390_CCW_BOOTMAP_H |
| 12 | #define _PC_BIOS_S390_CCW_BOOTMAP_H |
| 13 | |
| 14 | #include "s390-ccw.h" |
Eugene (jno) Dvurechenski | a94b485 | 2014-05-19 20:09:50 +0200 | [diff] [blame] | 15 | #include "virtio.h" |
| 16 | |
| 17 | typedef uint64_t block_number_t; |
Christian Borntraeger | f17a843 | 2015-01-22 13:44:26 +0100 | [diff] [blame] | 18 | #define NULL_BLOCK_NR 0xffffffffffffffffULL |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 19 | |
| 20 | #define FREE_SPACE_FILLER '\xAA' |
| 21 | |
| 22 | typedef struct ScsiBlockPtr { |
| 23 | uint64_t blockno; |
| 24 | uint16_t size; |
| 25 | uint16_t blockct; |
| 26 | uint8_t reserved[4]; |
| 27 | } __attribute__ ((packed)) ScsiBlockPtr; |
| 28 | |
| 29 | typedef struct FbaBlockPtr { |
| 30 | uint32_t blockno; |
| 31 | uint16_t size; |
| 32 | uint16_t blockct; |
| 33 | } __attribute__ ((packed)) FbaBlockPtr; |
| 34 | |
Collin L. Walling | 80beedc | 2018-02-23 10:43:08 -0500 | [diff] [blame] | 35 | typedef struct EckdCHS { |
| 36 | uint16_t cylinder; |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 37 | uint16_t head; |
| 38 | uint8_t sector; |
Collin L. Walling | 80beedc | 2018-02-23 10:43:08 -0500 | [diff] [blame] | 39 | } __attribute__ ((packed)) EckdCHS; |
| 40 | |
| 41 | typedef struct EckdBlockPtr { |
| 42 | EckdCHS chs; /* cylinder/head/sector is an address of the block */ |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 43 | uint16_t size; |
| 44 | uint8_t count; /* (size_in_blocks-1); |
| 45 | * it's 0 for TablePtr, ScriptPtr, and SectionPtr */ |
| 46 | } __attribute__ ((packed)) EckdBlockPtr; |
| 47 | |
Jared Rossi | 8af5d14 | 2023-02-21 12:45:48 -0500 | [diff] [blame] | 48 | typedef struct LdEckdCHS { |
| 49 | uint32_t cylinder; |
| 50 | uint8_t head; |
| 51 | uint8_t sector; |
| 52 | } __attribute__ ((packed)) LdEckdCHS; |
| 53 | |
| 54 | typedef struct LdEckdBlockPtr { |
| 55 | LdEckdCHS chs; /* cylinder/head/sector is an address of the block */ |
| 56 | uint8_t reserved[4]; |
| 57 | uint16_t count; |
| 58 | uint32_t pad; |
| 59 | } __attribute__ ((packed)) LdEckdBlockPtr; |
| 60 | |
| 61 | /* bptr is used for CCW type IPL, while ldptr is for list-directed IPL */ |
| 62 | typedef union ExtEckdBlockPtr { |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 63 | EckdBlockPtr bptr; |
Jared Rossi | 8af5d14 | 2023-02-21 12:45:48 -0500 | [diff] [blame] | 64 | LdEckdBlockPtr ldptr; |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 65 | } __attribute__ ((packed)) ExtEckdBlockPtr; |
| 66 | |
| 67 | typedef union BootMapPointer { |
| 68 | ScsiBlockPtr scsi; |
| 69 | FbaBlockPtr fba; |
| 70 | EckdBlockPtr eckd; |
| 71 | ExtEckdBlockPtr xeckd; |
| 72 | } __attribute__ ((packed)) BootMapPointer; |
| 73 | |
Jared Rossi | 8af5d14 | 2023-02-21 12:45:48 -0500 | [diff] [blame] | 74 | typedef struct BootRecord { |
| 75 | uint8_t magic[4]; |
| 76 | uint32_t version; |
| 77 | uint64_t res1; |
| 78 | BootMapPointer pgt; |
| 79 | uint8_t reserved[510 - 32]; |
| 80 | uint16_t os_id; |
| 81 | } __attribute__ ((packed)) BootRecord; |
| 82 | |
Collin L. Walling | 5340eb0 | 2018-02-23 10:43:07 -0500 | [diff] [blame] | 83 | /* aka Program Table */ |
| 84 | typedef struct BootMapTable { |
| 85 | uint8_t magic[4]; |
| 86 | uint8_t reserved[12]; |
| 87 | BootMapPointer entry[]; |
| 88 | } __attribute__ ((packed)) BootMapTable; |
| 89 | |
Janosch Frank | 4906a4e | 2020-10-06 05:42:46 -0400 | [diff] [blame] | 90 | typedef union ComponentEntryData { |
| 91 | uint64_t load_psw; |
| 92 | uint64_t load_addr; |
| 93 | } ComponentEntryData; |
| 94 | |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 95 | typedef struct ComponentEntry { |
| 96 | ScsiBlockPtr data; |
| 97 | uint8_t pad[7]; |
| 98 | uint8_t component_type; |
Janosch Frank | 4906a4e | 2020-10-06 05:42:46 -0400 | [diff] [blame] | 99 | ComponentEntryData compdat; |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 100 | } __attribute((packed)) ComponentEntry; |
| 101 | |
| 102 | typedef struct ComponentHeader { |
| 103 | uint8_t magic[4]; /* == "zIPL" */ |
| 104 | uint8_t type; /* == ZIPL_COMP_HEADER_* */ |
| 105 | uint8_t reserved[27]; |
| 106 | } __attribute((packed)) ComponentHeader; |
| 107 | |
| 108 | typedef struct ScsiMbr { |
| 109 | uint8_t magic[4]; |
| 110 | uint32_t version_id; |
| 111 | uint8_t reserved[8]; |
Collin L. Walling | 5340eb0 | 2018-02-23 10:43:07 -0500 | [diff] [blame] | 112 | ScsiBlockPtr pt; /* block pointer to program table */ |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 113 | } __attribute__ ((packed)) ScsiMbr; |
| 114 | |
| 115 | #define ZIPL_MAGIC "zIPL" |
Collin L. Walling | ba831b2 | 2018-02-23 10:43:14 -0500 | [diff] [blame] | 116 | #define ZIPL_MAGIC_EBCDIC "\xa9\xc9\xd7\xd3" |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 117 | #define IPL1_MAGIC "\xc9\xd7\xd3\xf1" /* == "IPL1" in EBCDIC */ |
| 118 | #define IPL2_MAGIC "\xc9\xd7\xd3\xf2" /* == "IPL2" in EBCDIC */ |
| 119 | #define VOL1_MAGIC "\xe5\xd6\xd3\xf1" /* == "VOL1" in EBCDIC */ |
| 120 | #define LNX1_MAGIC "\xd3\xd5\xe7\xf1" /* == "LNX1" in EBCDIC */ |
| 121 | #define CMS1_MAGIC "\xc3\xd4\xe2\xf1" /* == "CMS1" in EBCDIC */ |
| 122 | |
| 123 | #define LDL1_VERSION '\x40' /* == ' ' in EBCDIC */ |
| 124 | #define LDL2_VERSION '\xf2' /* == '2' in EBCDIC */ |
| 125 | |
| 126 | #define ZIPL_COMP_HEADER_IPL 0x00 |
| 127 | #define ZIPL_COMP_HEADER_DUMP 0x01 |
| 128 | |
Jason J. Herne | 2497b4a | 2019-04-29 09:09:41 -0400 | [diff] [blame] | 129 | #define ZIPL_COMP_ENTRY_EXEC 0x01 |
| 130 | #define ZIPL_COMP_ENTRY_LOAD 0x02 |
| 131 | #define ZIPL_COMP_ENTRY_SIGNATURE 0x03 |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 132 | |
| 133 | typedef struct XEckdMbr { |
| 134 | uint8_t magic[4]; /* == "xIPL" */ |
| 135 | uint8_t version; |
| 136 | uint8_t bp_type; |
| 137 | uint8_t dev_type; /* == DEV_TYPE_* */ |
| 138 | #define DEV_TYPE_ECKD 0x00 |
| 139 | #define DEV_TYPE_FBA 0x01 |
| 140 | uint8_t flags; |
| 141 | BootMapPointer blockptr; |
| 142 | uint8_t reserved[8]; |
| 143 | } __attribute__ ((packed)) XEckdMbr; /* see also BootInfo */ |
| 144 | |
| 145 | typedef struct BootMapScriptEntry { |
| 146 | BootMapPointer blkptr; |
| 147 | uint8_t pad[7]; |
| 148 | uint8_t type; /* == BOOT_SCRIPT_* */ |
Jason J. Herne | 2497b4a | 2019-04-29 09:09:41 -0400 | [diff] [blame] | 149 | #define BOOT_SCRIPT_EXEC 0x01 |
| 150 | #define BOOT_SCRIPT_LOAD 0x02 |
| 151 | #define BOOT_SCRIPT_SIGNATURE 0x03 |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 152 | union { |
| 153 | uint64_t load_address; |
| 154 | uint64_t load_psw; |
| 155 | } address; |
| 156 | } __attribute__ ((packed)) BootMapScriptEntry; |
| 157 | |
| 158 | typedef struct BootMapScriptHeader { |
| 159 | uint32_t magic; |
| 160 | uint8_t type; |
| 161 | #define BOOT_SCRIPT_HDR_IPL 0x00 |
| 162 | uint8_t reserved[27]; |
| 163 | } __attribute__ ((packed)) BootMapScriptHeader; |
| 164 | |
| 165 | typedef struct BootMapScript { |
| 166 | BootMapScriptHeader header; |
Philippe Mathieu-Daudé | f7795e4 | 2020-03-04 16:38:15 +0100 | [diff] [blame] | 167 | BootMapScriptEntry entry[]; |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 168 | } __attribute__ ((packed)) BootMapScript; |
| 169 | |
| 170 | /* |
| 171 | * These aren't real VTOCs, but referred to this way in some docs. |
| 172 | * They are "volume labels" actually. |
| 173 | * |
| 174 | * Some structures looks similar to described above, but left |
| 175 | * separate as there is no indication that they are the same. |
| 176 | * So, the value definitions are left separate too. |
| 177 | */ |
| 178 | typedef struct LDL_VTOC { /* @ rec.3 cyl.0 trk.0 for ECKD */ |
| 179 | char magic[4]; /* "LNX1", EBCDIC */ |
| 180 | char volser[6]; /* volser, EBCDIC */ |
| 181 | uint8_t reserved[69]; /* reserved, 0x40 */ |
| 182 | uint8_t LDL_version; /* 0x40 or 0xF2 */ |
| 183 | uint64_t formatted_blocks; /* if LDL_version >= 0xF2 */ |
| 184 | } __attribute__ ((packed)) LDL_VTOC; |
| 185 | |
| 186 | typedef struct format_date { |
| 187 | uint8_t YY; |
| 188 | uint8_t MM; |
| 189 | uint8_t DD; |
| 190 | uint8_t hh; |
| 191 | uint8_t mm; |
| 192 | uint8_t ss; |
| 193 | } __attribute__ ((packed)) format_date_t; |
| 194 | |
| 195 | typedef struct CMS_VTOC { /* @ rec.3 cyl.0 trk.0 for ECKD */ |
| 196 | /* @ blk.1 (zero based) for FBA */ |
| 197 | char magic[4]; /* 'CMS1', EBCDIC */ |
| 198 | char volser[6]; /* volser, EBCDIC */ |
| 199 | uint16_t version; /* = 0 */ |
| 200 | uint32_t block_size; /* = 512, 1024, 2048, or 4096 */ |
| 201 | uint32_t disk_origin; /* = 4 or 5 */ |
| 202 | uint32_t blocks; /* Number of usable cyls/blocks */ |
| 203 | uint32_t formatted; /* Max number of fmtd cyls/blks */ |
| 204 | uint32_t CMS_blocks; /* disk size in CMS blocks */ |
| 205 | uint32_t CMS_used; /* Number of CMS blocks in use */ |
| 206 | uint32_t FST_size; /* = 64, bytes */ |
| 207 | uint32_t FST_per_CMS_blk; /* */ |
| 208 | format_date_t format_date; /* YYMMDDhhmmss as 6 bytes */ |
| 209 | uint8_t reserved1[2]; /* = 0 */ |
| 210 | uint32_t offset; /* disk offset when reserved */ |
| 211 | uint32_t next_hole; /* block nr */ |
| 212 | uint32_t HBLK_hole_offset; /* >> HBLK data of next hole */ |
| 213 | uint32_t alloc_map_usr_off; /* >> user part of Alloc map */ |
| 214 | uint8_t reserved2[4]; /* = 0 */ |
| 215 | char shared_seg_name[8]; /* */ |
| 216 | } __attribute__ ((packed)) CMS_VTOC; |
| 217 | |
| 218 | /* from zipl/include/boot.h */ |
| 219 | typedef struct BootInfoBpIpl { |
| 220 | union { |
| 221 | ExtEckdBlockPtr eckd; |
| 222 | ScsiBlockPtr linr; |
| 223 | } bm_ptr; |
| 224 | uint8_t unused[16]; |
| 225 | } __attribute__ ((packed)) BootInfoBpIpl; |
| 226 | |
| 227 | typedef struct EckdDumpParam { |
| 228 | uint32_t start_blk; |
| 229 | uint32_t end_blk; |
| 230 | uint16_t blocksize; |
| 231 | uint8_t num_heads; |
| 232 | uint8_t bpt; |
| 233 | char reserved[4]; |
| 234 | } __attribute((packed, may_alias)) EckdDumpParam; |
| 235 | |
| 236 | typedef struct FbaDumpParam { |
| 237 | uint64_t start_blk; |
| 238 | uint64_t blockct; |
| 239 | } __attribute((packed)) FbaDumpParam; |
| 240 | |
| 241 | typedef struct BootInfoBpDump { |
| 242 | union { |
| 243 | EckdDumpParam eckd; |
| 244 | FbaDumpParam fba; |
| 245 | } param; |
| 246 | uint8_t unused[16]; |
| 247 | } __attribute__ ((packed)) BootInfoBpDump; |
| 248 | |
| 249 | typedef struct BootInfo { /* @ 0x70, record #0 */ |
| 250 | unsigned char magic[4]; /* = 'zIPL', ASCII */ |
| 251 | uint8_t version; /* = 1 */ |
| 252 | #define BOOT_INFO_VERSION 1 |
| 253 | uint8_t bp_type; /* = 0 */ |
| 254 | #define BOOT_INFO_BP_TYPE_IPL 0x00 |
| 255 | #define BOOT_INFO_BP_TYPE_DUMP 0x01 |
| 256 | uint8_t dev_type; /* = 0 */ |
| 257 | #define BOOT_INFO_DEV_TYPE_ECKD 0x00 |
| 258 | #define BOOT_INFO_DEV_TYPE_FBA 0x01 |
| 259 | uint8_t flags; /* = 1 */ |
| 260 | #ifdef __s390x__ |
| 261 | #define BOOT_INFO_FLAGS_ARCH 0x01 |
| 262 | #else |
| 263 | #define BOOT_INFO_FLAGS_ARCH 0x00 |
| 264 | #endif |
| 265 | union { |
| 266 | BootInfoBpDump dump; |
| 267 | BootInfoBpIpl ipl; |
| 268 | } bp; |
| 269 | } __attribute__ ((packed)) BootInfo; /* see also XEckdMbr */ |
| 270 | |
Collin L. Walling | ac4c595 | 2018-02-23 10:43:09 -0500 | [diff] [blame] | 271 | /* |
| 272 | * Structs for IPL |
| 273 | */ |
| 274 | #define STAGE2_BLK_CNT_MAX 24 /* Stage 1b can load up to 24 blocks */ |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 275 | |
Collin L. Walling | ac4c595 | 2018-02-23 10:43:09 -0500 | [diff] [blame] | 276 | typedef struct EckdCdlIpl1 { |
| 277 | uint8_t key[4]; /* == "IPL1" */ |
| 278 | uint8_t data[24]; |
| 279 | } __attribute__((packed)) EckdCdlIpl1; |
| 280 | |
Collin L. Walling | ba831b2 | 2018-02-23 10:43:14 -0500 | [diff] [blame] | 281 | typedef struct EckdSeekArg { |
| 282 | uint16_t pad; |
| 283 | EckdCHS chs; |
| 284 | uint8_t pad2; |
| 285 | } __attribute__ ((packed)) EckdSeekArg; |
| 286 | |
| 287 | typedef struct EckdStage1b { |
| 288 | uint8_t reserved[32 * STAGE2_BLK_CNT_MAX]; |
| 289 | struct EckdSeekArg seek[STAGE2_BLK_CNT_MAX]; |
| 290 | uint8_t unused[64]; |
| 291 | } __attribute__ ((packed)) EckdStage1b; |
| 292 | |
| 293 | typedef struct EckdStage1 { |
| 294 | uint8_t reserved[72]; |
| 295 | struct EckdSeekArg seek[2]; |
| 296 | } __attribute__ ((packed)) EckdStage1; |
| 297 | |
Collin L. Walling | ac4c595 | 2018-02-23 10:43:09 -0500 | [diff] [blame] | 298 | typedef struct EckdCdlIpl2 { |
| 299 | uint8_t key[4]; /* == "IPL2" */ |
Collin L. Walling | ba831b2 | 2018-02-23 10:43:14 -0500 | [diff] [blame] | 300 | struct EckdStage1 stage1; |
Collin L. Walling | ac4c595 | 2018-02-23 10:43:09 -0500 | [diff] [blame] | 301 | XEckdMbr mbr; |
| 302 | uint8_t reserved[24]; |
| 303 | } __attribute__((packed)) EckdCdlIpl2; |
| 304 | |
| 305 | typedef struct EckdLdlIpl1 { |
Collin L. Walling | ba831b2 | 2018-02-23 10:43:14 -0500 | [diff] [blame] | 306 | uint8_t reserved[24]; |
| 307 | struct EckdStage1 stage1; |
Collin L. Walling | ac4c595 | 2018-02-23 10:43:09 -0500 | [diff] [blame] | 308 | BootInfo bip; /* BootInfo is MBR for LDL */ |
| 309 | } __attribute__((packed)) EckdLdlIpl1; |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 310 | |
| 311 | typedef struct IplVolumeLabel { |
| 312 | unsigned char key[4]; /* == "VOL1" */ |
| 313 | union { |
| 314 | unsigned char data[80]; |
| 315 | struct { |
| 316 | unsigned char key[4]; /* == "VOL1" */ |
| 317 | unsigned char volser[6]; |
Jared Rossi | 8af5d14 | 2023-02-21 12:45:48 -0500 | [diff] [blame] | 318 | unsigned char reserved[64]; |
| 319 | EckdCHS br; /* Location of Boot Record for list-directed IPL */ |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 320 | } f; |
| 321 | }; |
| 322 | } __attribute__((packed)) IplVolumeLabel; |
| 323 | |
Eugene (jno) Dvurechenski | 564e52b | 2014-05-19 20:14:41 +0200 | [diff] [blame] | 324 | typedef enum { |
| 325 | ECKD_NO_IPL, |
Eugene (jno) Dvurechenski | 564e52b | 2014-05-19 20:14:41 +0200 | [diff] [blame] | 326 | ECKD_CMS, |
| 327 | ECKD_LDL, |
Eugene (jno) Dvurechenski | 14f56a2 | 2014-08-29 11:01:40 +0200 | [diff] [blame] | 328 | ECKD_LDL_UNLABELED, |
Eugene (jno) Dvurechenski | 564e52b | 2014-05-19 20:14:41 +0200 | [diff] [blame] | 329 | } ECKD_IPL_mode_t; |
| 330 | |
Eugene (jno) Dvurechenski | a94b485 | 2014-05-19 20:09:50 +0200 | [diff] [blame] | 331 | /* utility code below */ |
| 332 | |
Eugene (jno) Dvurechenski | a94b485 | 2014-05-19 20:09:50 +0200 | [diff] [blame] | 333 | static inline void print_volser(const void *volser) |
| 334 | { |
| 335 | char ascii[8]; |
| 336 | |
| 337 | ebcdic_to_ascii((char *)volser, ascii, 6); |
| 338 | ascii[6] = '\0'; |
| 339 | sclp_print("VOLSER=["); |
| 340 | sclp_print(ascii); |
| 341 | sclp_print("]\n"); |
| 342 | } |
| 343 | |
| 344 | static inline bool unused_space(const void *p, size_t size) |
| 345 | { |
| 346 | size_t i; |
| 347 | const unsigned char *m = p; |
| 348 | |
| 349 | for (i = 0; i < size; i++) { |
| 350 | if (m[i] != FREE_SPACE_FILLER) { |
| 351 | return false; |
| 352 | } |
| 353 | } |
| 354 | return true; |
| 355 | } |
| 356 | |
| 357 | static inline bool is_null_block_number(block_number_t x) |
| 358 | { |
| 359 | return x == NULL_BLOCK_NR; |
| 360 | } |
| 361 | |
| 362 | static inline void read_block(block_number_t blockno, |
| 363 | void *buffer, |
| 364 | const char *errmsg) |
| 365 | { |
| 366 | IPL_assert(virtio_read(blockno, buffer) == 0, errmsg); |
| 367 | } |
| 368 | |
| 369 | static inline bool block_size_ok(uint32_t block_size) |
| 370 | { |
| 371 | return block_size == virtio_get_block_size(); |
| 372 | } |
| 373 | |
| 374 | static inline bool magic_match(const void *data, const void *magic) |
| 375 | { |
| 376 | return *((uint32_t *)data) == *((uint32_t *)magic); |
| 377 | } |
| 378 | |
Maxim Samoylov | 869648e | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 379 | static inline uint32_t iso_733_to_u32(uint64_t x) |
| 380 | { |
| 381 | return (uint32_t)x; |
| 382 | } |
| 383 | |
Maxim Samoylov | 866cac9 | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 384 | #define ISO_SECTOR_SIZE 2048 |
| 385 | /* El Torito specifies boot image size in 512 byte blocks */ |
| 386 | #define ET_SECTOR_SHIFT 2 |
Maxim Samoylov | 866cac9 | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 387 | |
| 388 | #define ISO_PRIMARY_VD_SECTOR 16 |
| 389 | |
| 390 | static inline void read_iso_sector(uint32_t block_offset, void *buf, |
| 391 | const char *errmsg) |
| 392 | { |
| 393 | IPL_assert(virtio_read_many(block_offset, buf, 1) == 0, errmsg); |
| 394 | } |
| 395 | |
| 396 | static inline void read_iso_boot_image(uint32_t block_offset, void *load_addr, |
| 397 | uint32_t blks_to_load) |
| 398 | { |
| 399 | IPL_assert(virtio_read_many(block_offset, load_addr, blks_to_load) == 0, |
| 400 | "Failed to read boot image!"); |
| 401 | } |
| 402 | |
Maxim Samoylov | 869648e | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 403 | #define ISO9660_MAX_DIR_DEPTH 8 |
| 404 | |
Maxim Samoylov | 866cac9 | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 405 | typedef struct IsoDirHdr { |
| 406 | uint8_t dr_len; |
| 407 | uint8_t ear_len; |
| 408 | uint64_t ext_loc; |
| 409 | uint64_t data_len; |
| 410 | uint8_t recording_datetime[7]; |
| 411 | uint8_t file_flags; |
| 412 | uint8_t file_unit_size; |
| 413 | uint8_t gap_size; |
| 414 | uint32_t vol_seqnum; |
| 415 | uint8_t fileid_len; |
| 416 | } __attribute__((packed)) IsoDirHdr; |
| 417 | |
| 418 | typedef struct IsoVdElTorito { |
| 419 | uint8_t el_torito[32]; /* must contain el_torito_magic value */ |
| 420 | uint8_t unused0[32]; |
| 421 | uint32_t bc_offset; |
| 422 | uint8_t unused1[1974]; |
| 423 | } __attribute__((packed)) IsoVdElTorito; |
| 424 | |
| 425 | typedef struct IsoVdPrimary { |
| 426 | uint8_t unused1; |
| 427 | uint8_t sys_id[32]; |
| 428 | uint8_t vol_id[32]; |
| 429 | uint8_t unused2[8]; |
| 430 | uint64_t vol_space_size; |
| 431 | uint8_t unused3[32]; |
| 432 | uint32_t vol_set_size; |
| 433 | uint32_t vol_seqnum; |
| 434 | uint32_t log_block_size; |
| 435 | uint64_t path_table_size; |
| 436 | uint32_t l_path_table; |
| 437 | uint32_t opt_l_path_table; |
| 438 | uint32_t m_path_table; |
| 439 | uint32_t opt_m_path_table; |
| 440 | IsoDirHdr rootdir; |
| 441 | uint8_t root_null; |
| 442 | uint8_t reserved2[1858]; |
| 443 | } __attribute__((packed)) IsoVdPrimary; |
| 444 | |
| 445 | typedef struct IsoVolDesc { |
| 446 | uint8_t type; |
| 447 | uint8_t ident[5]; |
| 448 | uint8_t version; |
| 449 | union { |
| 450 | IsoVdElTorito boot; |
| 451 | IsoVdPrimary primary; |
| 452 | } vd; |
| 453 | } __attribute__((packed)) IsoVolDesc; |
| 454 | |
Maxim Samoylov | 866cac9 | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 455 | #define VOL_DESC_TYPE_BOOT 0 |
| 456 | #define VOL_DESC_TYPE_PRIMARY 1 |
| 457 | #define VOL_DESC_TYPE_SUPPLEMENT 2 |
| 458 | #define VOL_DESC_TYPE_PARTITION 3 |
| 459 | #define VOL_DESC_TERMINATOR 255 |
| 460 | |
Maxim Samoylov | 866cac9 | 2015-10-12 17:50:20 +0200 | [diff] [blame] | 461 | typedef struct IsoBcValid { |
| 462 | uint8_t platform_id; |
| 463 | uint16_t reserved; |
| 464 | uint8_t id[24]; |
| 465 | uint16_t checksum; |
| 466 | uint8_t key[2]; |
| 467 | } __attribute__((packed)) IsoBcValid; |
| 468 | |
| 469 | typedef struct IsoBcSection { |
| 470 | uint8_t boot_type; |
| 471 | uint16_t load_segment; |
| 472 | uint8_t sys_type; |
| 473 | uint8_t unused; |
| 474 | uint16_t sector_count; |
| 475 | uint32_t load_rba; |
| 476 | uint8_t selection[20]; |
| 477 | } __attribute__((packed)) IsoBcSection; |
| 478 | |
| 479 | typedef struct IsoBcHdr { |
| 480 | uint8_t platform_id; |
| 481 | uint16_t sect_num; |
| 482 | uint8_t id[28]; |
| 483 | } __attribute__((packed)) IsoBcHdr; |
| 484 | |
| 485 | typedef struct IsoBcEntry { |
| 486 | uint8_t id; |
| 487 | union { |
| 488 | IsoBcValid valid; /* id == 0x01 */ |
| 489 | IsoBcSection sect; /* id == 0x88 || id == 0x0 */ |
| 490 | IsoBcHdr hdr; /* id == 0x90 || id == 0x91 */ |
| 491 | } body; |
| 492 | } __attribute__((packed)) IsoBcEntry; |
| 493 | |
| 494 | #define ISO_BC_ENTRY_PER_SECTOR (ISO_SECTOR_SIZE / sizeof(IsoBcEntry)) |
| 495 | #define ISO_BC_HDR_VALIDATION 0x01 |
| 496 | #define ISO_BC_BOOTABLE_SECTION 0x88 |
| 497 | #define ISO_BC_MAGIC_55 0x55 |
| 498 | #define ISO_BC_MAGIC_AA 0xaa |
| 499 | #define ISO_BC_PLATFORM_X86 0x0 |
| 500 | #define ISO_BC_PLATFORM_PPC 0x1 |
| 501 | #define ISO_BC_PLATFORM_MAC 0x2 |
| 502 | |
| 503 | static inline bool is_iso_bc_valid(IsoBcEntry *e) |
| 504 | { |
| 505 | IsoBcValid *v = &e->body.valid; |
| 506 | |
| 507 | if (e->id != ISO_BC_HDR_VALIDATION) { |
| 508 | return false; |
| 509 | } |
| 510 | |
| 511 | if (v->platform_id != ISO_BC_PLATFORM_X86 && |
| 512 | v->platform_id != ISO_BC_PLATFORM_PPC && |
| 513 | v->platform_id != ISO_BC_PLATFORM_MAC) { |
| 514 | return false; |
| 515 | } |
| 516 | |
| 517 | return v->key[0] == ISO_BC_MAGIC_55 && |
| 518 | v->key[1] == ISO_BC_MAGIC_AA && |
| 519 | v->reserved == 0x0; |
| 520 | } |
| 521 | |
Eugene (jno) Dvurechenski | 26f2bbd | 2014-05-19 20:08:54 +0200 | [diff] [blame] | 522 | #endif /* _PC_BIOS_S390_CCW_BOOTMAP_H */ |