1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * ipl/reipl/dump support for Linux on s390. 4 * 5 * Copyright IBM Corp. 2005, 2012 6 * Author(s): Michael Holzheu <holzheu@de.ibm.com> 7 * Heiko Carstens <heiko.carstens@de.ibm.com> 8 * Volker Sameske <sameske@de.ibm.com> 9 */ 10 11 #include <linux/types.h> 12 #include <linux/export.h> 13 #include <linux/init.h> 14 #include <linux/device.h> 15 #include <linux/delay.h> 16 #include <linux/reboot.h> 17 #include <linux/ctype.h> 18 #include <linux/fs.h> 19 #include <linux/gfp.h> 20 #include <linux/crash_dump.h> 21 #include <linux/debug_locks.h> 22 #include <asm/diag.h> 23 #include <asm/ipl.h> 24 #include <asm/smp.h> 25 #include <asm/setup.h> 26 #include <asm/cpcmd.h> 27 #include <asm/ebcdic.h> 28 #include <asm/sclp.h> 29 #include <asm/checksum.h> 30 #include <asm/debug.h> 31 #include <asm/os_info.h> 32 #include <asm/sections.h> 33 #include <asm/boot_data.h> 34 #include "entry.h" 35 36 #define IPL_PARM_BLOCK_VERSION 0 37 38 #define IPL_UNKNOWN_STR "unknown" 39 #define IPL_CCW_STR "ccw" 40 #define IPL_FCP_STR "fcp" 41 #define IPL_FCP_DUMP_STR "fcp_dump" 42 #define IPL_NSS_STR "nss" 43 44 #define DUMP_CCW_STR "ccw" 45 #define DUMP_FCP_STR "fcp" 46 #define DUMP_NONE_STR "none" 47 48 /* 49 * Four shutdown trigger types are supported: 50 * - panic 51 * - halt 52 * - power off 53 * - reipl 54 * - restart 55 */ 56 #define ON_PANIC_STR "on_panic" 57 #define ON_HALT_STR "on_halt" 58 #define ON_POFF_STR "on_poff" 59 #define ON_REIPL_STR "on_reboot" 60 #define ON_RESTART_STR "on_restart" 61 62 struct shutdown_action; 63 struct shutdown_trigger { 64 char *name; 65 struct shutdown_action *action; 66 }; 67 68 /* 69 * The following shutdown action types are supported: 70 */ 71 #define SHUTDOWN_ACTION_IPL_STR "ipl" 72 #define SHUTDOWN_ACTION_REIPL_STR "reipl" 73 #define SHUTDOWN_ACTION_DUMP_STR "dump" 74 #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" 75 #define SHUTDOWN_ACTION_STOP_STR "stop" 76 #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" 77 78 struct shutdown_action { 79 char *name; 80 void (*fn) (struct shutdown_trigger *trigger); 81 int (*init) (void); 82 int init_rc; 83 }; 84 85 static char *ipl_type_str(enum ipl_type type) 86 { 87 switch (type) { 88 case IPL_TYPE_CCW: 89 return IPL_CCW_STR; 90 case IPL_TYPE_FCP: 91 return IPL_FCP_STR; 92 case IPL_TYPE_FCP_DUMP: 93 return IPL_FCP_DUMP_STR; 94 case IPL_TYPE_NSS: 95 return IPL_NSS_STR; 96 case IPL_TYPE_UNKNOWN: 97 default: 98 return IPL_UNKNOWN_STR; 99 } 100 } 101 102 enum dump_type { 103 DUMP_TYPE_NONE = 1, 104 DUMP_TYPE_CCW = 2, 105 DUMP_TYPE_FCP = 4, 106 }; 107 108 static char *dump_type_str(enum dump_type type) 109 { 110 switch (type) { 111 case DUMP_TYPE_NONE: 112 return DUMP_NONE_STR; 113 case DUMP_TYPE_CCW: 114 return DUMP_CCW_STR; 115 case DUMP_TYPE_FCP: 116 return DUMP_FCP_STR; 117 default: 118 return NULL; 119 } 120 } 121 122 int __bootdata_preserved(ipl_block_valid); 123 struct ipl_parameter_block __bootdata_preserved(ipl_block); 124 int __bootdata_preserved(ipl_secure_flag); 125 126 unsigned long __bootdata_preserved(ipl_cert_list_addr); 127 unsigned long __bootdata_preserved(ipl_cert_list_size); 128 129 unsigned long __bootdata(early_ipl_comp_list_addr); 130 unsigned long __bootdata(early_ipl_comp_list_size); 131 132 static int reipl_capabilities = IPL_TYPE_UNKNOWN; 133 134 static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; 135 static struct ipl_parameter_block *reipl_block_fcp; 136 static struct ipl_parameter_block *reipl_block_ccw; 137 static struct ipl_parameter_block *reipl_block_nss; 138 static struct ipl_parameter_block *reipl_block_actual; 139 140 static int dump_capabilities = DUMP_TYPE_NONE; 141 static enum dump_type dump_type = DUMP_TYPE_NONE; 142 static struct ipl_parameter_block *dump_block_fcp; 143 static struct ipl_parameter_block *dump_block_ccw; 144 145 static struct sclp_ipl_info sclp_ipl_info; 146 147 static bool reipl_fcp_clear; 148 static bool reipl_ccw_clear; 149 150 static inline int __diag308(unsigned long subcode, void *addr) 151 { 152 register unsigned long _addr asm("0") = (unsigned long) addr; 153 register unsigned long _rc asm("1") = 0; 154 155 asm volatile( 156 " diag %0,%2,0x308\n" 157 "0: nopr %%r7\n" 158 EX_TABLE(0b,0b) 159 : "+d" (_addr), "+d" (_rc) 160 : "d" (subcode) : "cc", "memory"); 161 return _rc; 162 } 163 164 int diag308(unsigned long subcode, void *addr) 165 { 166 if (IS_ENABLED(CONFIG_KASAN)) 167 __arch_local_irq_stosm(0x04); /* enable DAT */ 168 diag_stat_inc(DIAG_STAT_X308); 169 return __diag308(subcode, addr); 170 } 171 EXPORT_SYMBOL_GPL(diag308); 172 173 /* SYSFS */ 174 175 #define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ 176 static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ 177 struct kobj_attribute *attr, \ 178 char *page) \ 179 { \ 180 return snprintf(page, PAGE_SIZE, _format, ##args); \ 181 } 182 183 #define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ 184 static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ 185 struct kobj_attribute *attr, \ 186 const char *buf, size_t len) \ 187 { \ 188 unsigned long long ssid, devno; \ 189 \ 190 if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ 191 return -EINVAL; \ 192 \ 193 if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ 194 return -EINVAL; \ 195 \ 196 _ipl_blk.ssid = ssid; \ 197 _ipl_blk.devno = devno; \ 198 return len; \ 199 } 200 201 #define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ 202 IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ 203 _ipl_blk.ssid, _ipl_blk.devno); \ 204 IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ 205 static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ 206 __ATTR(_name, (S_IRUGO | S_IWUSR), \ 207 sys_##_prefix##_##_name##_show, \ 208 sys_##_prefix##_##_name##_store) \ 209 210 #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ 211 IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ 212 static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ 213 __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL) 214 215 #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ 216 IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ 217 static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ 218 struct kobj_attribute *attr, \ 219 const char *buf, size_t len) \ 220 { \ 221 unsigned long long value; \ 222 if (sscanf(buf, _fmt_in, &value) != 1) \ 223 return -EINVAL; \ 224 _value = value; \ 225 return len; \ 226 } \ 227 static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ 228 __ATTR(_name,(S_IRUGO | S_IWUSR), \ 229 sys_##_prefix##_##_name##_show, \ 230 sys_##_prefix##_##_name##_store) 231 232 #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ 233 IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ 234 static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ 235 struct kobj_attribute *attr, \ 236 const char *buf, size_t len) \ 237 { \ 238 strncpy(_value, buf, sizeof(_value) - 1); \ 239 strim(_value); \ 240 return len; \ 241 } \ 242 static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ 243 __ATTR(_name,(S_IRUGO | S_IWUSR), \ 244 sys_##_prefix##_##_name##_show, \ 245 sys_##_prefix##_##_name##_store) 246 247 /* 248 * ipl section 249 */ 250 251 static __init enum ipl_type get_ipl_type(void) 252 { 253 if (!ipl_block_valid) 254 return IPL_TYPE_UNKNOWN; 255 256 switch (ipl_block.pb0_hdr.pbt) { 257 case IPL_PBT_CCW: 258 return IPL_TYPE_CCW; 259 case IPL_PBT_FCP: 260 if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) 261 return IPL_TYPE_FCP_DUMP; 262 else 263 return IPL_TYPE_FCP; 264 } 265 return IPL_TYPE_UNKNOWN; 266 } 267 268 struct ipl_info ipl_info; 269 EXPORT_SYMBOL_GPL(ipl_info); 270 271 static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, 272 char *page) 273 { 274 return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); 275 } 276 277 static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); 278 279 static ssize_t ipl_secure_show(struct kobject *kobj, 280 struct kobj_attribute *attr, char *page) 281 { 282 return sprintf(page, "%i\n", !!ipl_secure_flag); 283 } 284 285 static struct kobj_attribute sys_ipl_secure_attr = 286 __ATTR(secure, 0444, ipl_secure_show, NULL); 287 288 static ssize_t ipl_has_secure_show(struct kobject *kobj, 289 struct kobj_attribute *attr, char *page) 290 { 291 return sprintf(page, "%i\n", !!sclp.has_sipl); 292 } 293 294 static struct kobj_attribute sys_ipl_has_secure_attr = 295 __ATTR(has_secure, 0444, ipl_has_secure_show, NULL); 296 297 static ssize_t ipl_vm_parm_show(struct kobject *kobj, 298 struct kobj_attribute *attr, char *page) 299 { 300 char parm[DIAG308_VMPARM_SIZE + 1] = {}; 301 302 if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW)) 303 ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block); 304 return sprintf(page, "%s\n", parm); 305 } 306 307 static struct kobj_attribute sys_ipl_vm_parm_attr = 308 __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); 309 310 static ssize_t sys_ipl_device_show(struct kobject *kobj, 311 struct kobj_attribute *attr, char *page) 312 { 313 switch (ipl_info.type) { 314 case IPL_TYPE_CCW: 315 return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid, 316 ipl_block.ccw.devno); 317 case IPL_TYPE_FCP: 318 case IPL_TYPE_FCP_DUMP: 319 return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno); 320 default: 321 return 0; 322 } 323 } 324 325 static struct kobj_attribute sys_ipl_device_attr = 326 __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); 327 328 static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, 329 struct bin_attribute *attr, char *buf, 330 loff_t off, size_t count) 331 { 332 return memory_read_from_buffer(buf, count, &off, &ipl_block, 333 ipl_block.hdr.len); 334 } 335 static struct bin_attribute ipl_parameter_attr = 336 __BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL, 337 PAGE_SIZE); 338 339 static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, 340 struct bin_attribute *attr, char *buf, 341 loff_t off, size_t count) 342 { 343 unsigned int size = ipl_block.fcp.scp_data_len; 344 void *scp_data = &ipl_block.fcp.scp_data; 345 346 return memory_read_from_buffer(buf, count, &off, scp_data, size); 347 } 348 static struct bin_attribute ipl_scp_data_attr = 349 __BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE); 350 351 static struct bin_attribute *ipl_fcp_bin_attrs[] = { 352 &ipl_parameter_attr, 353 &ipl_scp_data_attr, 354 NULL, 355 }; 356 357 /* FCP ipl device attributes */ 358 359 DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", 360 (unsigned long long)ipl_block.fcp.wwpn); 361 DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", 362 (unsigned long long)ipl_block.fcp.lun); 363 DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", 364 (unsigned long long)ipl_block.fcp.bootprog); 365 DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", 366 (unsigned long long)ipl_block.fcp.br_lba); 367 368 static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, 369 struct kobj_attribute *attr, char *page) 370 { 371 char loadparm[LOADPARM_LEN + 1] = {}; 372 373 if (!sclp_ipl_info.is_valid) 374 return sprintf(page, "#unknown#\n"); 375 memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); 376 EBCASC(loadparm, LOADPARM_LEN); 377 strim(loadparm); 378 return sprintf(page, "%s\n", loadparm); 379 } 380 381 static struct kobj_attribute sys_ipl_ccw_loadparm_attr = 382 __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); 383 384 static struct attribute *ipl_fcp_attrs[] = { 385 &sys_ipl_type_attr.attr, 386 &sys_ipl_device_attr.attr, 387 &sys_ipl_fcp_wwpn_attr.attr, 388 &sys_ipl_fcp_lun_attr.attr, 389 &sys_ipl_fcp_bootprog_attr.attr, 390 &sys_ipl_fcp_br_lba_attr.attr, 391 &sys_ipl_ccw_loadparm_attr.attr, 392 &sys_ipl_secure_attr.attr, 393 &sys_ipl_has_secure_attr.attr, 394 NULL, 395 }; 396 397 static struct attribute_group ipl_fcp_attr_group = { 398 .attrs = ipl_fcp_attrs, 399 .bin_attrs = ipl_fcp_bin_attrs, 400 }; 401 402 /* CCW ipl device attributes */ 403 404 static struct attribute *ipl_ccw_attrs_vm[] = { 405 &sys_ipl_type_attr.attr, 406 &sys_ipl_device_attr.attr, 407 &sys_ipl_ccw_loadparm_attr.attr, 408 &sys_ipl_vm_parm_attr.attr, 409 &sys_ipl_secure_attr.attr, 410 &sys_ipl_has_secure_attr.attr, 411 NULL, 412 }; 413 414 static struct attribute *ipl_ccw_attrs_lpar[] = { 415 &sys_ipl_type_attr.attr, 416 &sys_ipl_device_attr.attr, 417 &sys_ipl_ccw_loadparm_attr.attr, 418 &sys_ipl_secure_attr.attr, 419 &sys_ipl_has_secure_attr.attr, 420 NULL, 421 }; 422 423 static struct attribute_group ipl_ccw_attr_group_vm = { 424 .attrs = ipl_ccw_attrs_vm, 425 }; 426 427 static struct attribute_group ipl_ccw_attr_group_lpar = { 428 .attrs = ipl_ccw_attrs_lpar 429 }; 430 431 /* UNKNOWN ipl device attributes */ 432 433 static struct attribute *ipl_unknown_attrs[] = { 434 &sys_ipl_type_attr.attr, 435 NULL, 436 }; 437 438 static struct attribute_group ipl_unknown_attr_group = { 439 .attrs = ipl_unknown_attrs, 440 }; 441 442 static struct kset *ipl_kset; 443 444 static void __ipl_run(void *unused) 445 { 446 __bpon(); 447 diag308(DIAG308_LOAD_CLEAR, NULL); 448 } 449 450 static void ipl_run(struct shutdown_trigger *trigger) 451 { 452 smp_call_ipl_cpu(__ipl_run, NULL); 453 } 454 455 static int __init ipl_init(void) 456 { 457 int rc; 458 459 ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); 460 if (!ipl_kset) { 461 rc = -ENOMEM; 462 goto out; 463 } 464 switch (ipl_info.type) { 465 case IPL_TYPE_CCW: 466 if (MACHINE_IS_VM) 467 rc = sysfs_create_group(&ipl_kset->kobj, 468 &ipl_ccw_attr_group_vm); 469 else 470 rc = sysfs_create_group(&ipl_kset->kobj, 471 &ipl_ccw_attr_group_lpar); 472 break; 473 case IPL_TYPE_FCP: 474 case IPL_TYPE_FCP_DUMP: 475 rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); 476 break; 477 default: 478 rc = sysfs_create_group(&ipl_kset->kobj, 479 &ipl_unknown_attr_group); 480 break; 481 } 482 out: 483 if (rc) 484 panic("ipl_init failed: rc = %i\n", rc); 485 486 return 0; 487 } 488 489 static struct shutdown_action __refdata ipl_action = { 490 .name = SHUTDOWN_ACTION_IPL_STR, 491 .fn = ipl_run, 492 .init = ipl_init, 493 }; 494 495 /* 496 * reipl shutdown action: Reboot Linux on shutdown. 497 */ 498 499 /* VM IPL PARM attributes */ 500 static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, 501 char *page) 502 { 503 char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; 504 505 ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); 506 return sprintf(page, "%s\n", vmparm); 507 } 508 509 static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, 510 size_t vmparm_max, 511 const char *buf, size_t len) 512 { 513 int i, ip_len; 514 515 /* ignore trailing newline */ 516 ip_len = len; 517 if ((len > 0) && (buf[len - 1] == '\n')) 518 ip_len--; 519 520 if (ip_len > vmparm_max) 521 return -EINVAL; 522 523 /* parm is used to store kernel options, check for common chars */ 524 for (i = 0; i < ip_len; i++) 525 if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) 526 return -EINVAL; 527 528 memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); 529 ipb->ccw.vm_parm_len = ip_len; 530 if (ip_len > 0) { 531 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; 532 memcpy(ipb->ccw.vm_parm, buf, ip_len); 533 ASCEBC(ipb->ccw.vm_parm, ip_len); 534 } else { 535 ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP; 536 } 537 538 return len; 539 } 540 541 /* NSS wrapper */ 542 static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, 543 struct kobj_attribute *attr, char *page) 544 { 545 return reipl_generic_vmparm_show(reipl_block_nss, page); 546 } 547 548 static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, 549 struct kobj_attribute *attr, 550 const char *buf, size_t len) 551 { 552 return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); 553 } 554 555 /* CCW wrapper */ 556 static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, 557 struct kobj_attribute *attr, char *page) 558 { 559 return reipl_generic_vmparm_show(reipl_block_ccw, page); 560 } 561 562 static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, 563 struct kobj_attribute *attr, 564 const char *buf, size_t len) 565 { 566 return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); 567 } 568 569 static struct kobj_attribute sys_reipl_nss_vmparm_attr = 570 __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, 571 reipl_nss_vmparm_store); 572 static struct kobj_attribute sys_reipl_ccw_vmparm_attr = 573 __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, 574 reipl_ccw_vmparm_store); 575 576 /* FCP reipl device attributes */ 577 578 static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, 579 struct bin_attribute *attr, 580 char *buf, loff_t off, size_t count) 581 { 582 size_t size = reipl_block_fcp->fcp.scp_data_len; 583 void *scp_data = reipl_block_fcp->fcp.scp_data; 584 585 return memory_read_from_buffer(buf, count, &off, scp_data, size); 586 } 587 588 static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, 589 struct bin_attribute *attr, 590 char *buf, loff_t off, size_t count) 591 { 592 size_t scpdata_len = count; 593 size_t padding; 594 595 596 if (off) 597 return -EINVAL; 598 599 memcpy(reipl_block_fcp->fcp.scp_data, buf, count); 600 if (scpdata_len % 8) { 601 padding = 8 - (scpdata_len % 8); 602 memset(reipl_block_fcp->fcp.scp_data + scpdata_len, 603 0, padding); 604 scpdata_len += padding; 605 } 606 607 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len; 608 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len; 609 reipl_block_fcp->fcp.scp_data_len = scpdata_len; 610 611 return count; 612 } 613 static struct bin_attribute sys_reipl_fcp_scp_data_attr = 614 __BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read, 615 reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE); 616 617 static struct bin_attribute *reipl_fcp_bin_attrs[] = { 618 &sys_reipl_fcp_scp_data_attr, 619 NULL, 620 }; 621 622 DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n", 623 reipl_block_fcp->fcp.wwpn); 624 DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n", 625 reipl_block_fcp->fcp.lun); 626 DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", 627 reipl_block_fcp->fcp.bootprog); 628 DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", 629 reipl_block_fcp->fcp.br_lba); 630 DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", 631 reipl_block_fcp->fcp.devno); 632 633 static void reipl_get_ascii_loadparm(char *loadparm, 634 struct ipl_parameter_block *ibp) 635 { 636 memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN); 637 EBCASC(loadparm, LOADPARM_LEN); 638 loadparm[LOADPARM_LEN] = 0; 639 strim(loadparm); 640 } 641 642 static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, 643 char *page) 644 { 645 char buf[LOADPARM_LEN + 1]; 646 647 reipl_get_ascii_loadparm(buf, ipb); 648 return sprintf(page, "%s\n", buf); 649 } 650 651 static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, 652 const char *buf, size_t len) 653 { 654 int i, lp_len; 655 656 /* ignore trailing newline */ 657 lp_len = len; 658 if ((len > 0) && (buf[len - 1] == '\n')) 659 lp_len--; 660 /* loadparm can have max 8 characters and must not start with a blank */ 661 if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) 662 return -EINVAL; 663 /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ 664 for (i = 0; i < lp_len; i++) { 665 if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || 666 (buf[i] == '.')) 667 continue; 668 return -EINVAL; 669 } 670 /* initialize loadparm with blanks */ 671 memset(ipb->common.loadparm, ' ', LOADPARM_LEN); 672 /* copy and convert to ebcdic */ 673 memcpy(ipb->common.loadparm, buf, lp_len); 674 ASCEBC(ipb->common.loadparm, LOADPARM_LEN); 675 ipb->common.flags |= IPL_PB0_FLAG_LOADPARM; 676 return len; 677 } 678 679 /* FCP wrapper */ 680 static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj, 681 struct kobj_attribute *attr, char *page) 682 { 683 return reipl_generic_loadparm_show(reipl_block_fcp, page); 684 } 685 686 static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj, 687 struct kobj_attribute *attr, 688 const char *buf, size_t len) 689 { 690 return reipl_generic_loadparm_store(reipl_block_fcp, buf, len); 691 } 692 693 static struct kobj_attribute sys_reipl_fcp_loadparm_attr = 694 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show, 695 reipl_fcp_loadparm_store); 696 697 static ssize_t reipl_fcp_clear_show(struct kobject *kobj, 698 struct kobj_attribute *attr, char *page) 699 { 700 return sprintf(page, "%u\n", reipl_fcp_clear); 701 } 702 703 static ssize_t reipl_fcp_clear_store(struct kobject *kobj, 704 struct kobj_attribute *attr, 705 const char *buf, size_t len) 706 { 707 if (strtobool(buf, &reipl_fcp_clear) < 0) 708 return -EINVAL; 709 return len; 710 } 711 712 static struct attribute *reipl_fcp_attrs[] = { 713 &sys_reipl_fcp_device_attr.attr, 714 &sys_reipl_fcp_wwpn_attr.attr, 715 &sys_reipl_fcp_lun_attr.attr, 716 &sys_reipl_fcp_bootprog_attr.attr, 717 &sys_reipl_fcp_br_lba_attr.attr, 718 &sys_reipl_fcp_loadparm_attr.attr, 719 NULL, 720 }; 721 722 static struct attribute_group reipl_fcp_attr_group = { 723 .attrs = reipl_fcp_attrs, 724 .bin_attrs = reipl_fcp_bin_attrs, 725 }; 726 727 static struct kobj_attribute sys_reipl_fcp_clear_attr = 728 __ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store); 729 730 /* CCW reipl device attributes */ 731 DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw); 732 733 /* NSS wrapper */ 734 static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, 735 struct kobj_attribute *attr, char *page) 736 { 737 return reipl_generic_loadparm_show(reipl_block_nss, page); 738 } 739 740 static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, 741 struct kobj_attribute *attr, 742 const char *buf, size_t len) 743 { 744 return reipl_generic_loadparm_store(reipl_block_nss, buf, len); 745 } 746 747 /* CCW wrapper */ 748 static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, 749 struct kobj_attribute *attr, char *page) 750 { 751 return reipl_generic_loadparm_show(reipl_block_ccw, page); 752 } 753 754 static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, 755 struct kobj_attribute *attr, 756 const char *buf, size_t len) 757 { 758 return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); 759 } 760 761 static struct kobj_attribute sys_reipl_ccw_loadparm_attr = 762 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, 763 reipl_ccw_loadparm_store); 764 765 static ssize_t reipl_ccw_clear_show(struct kobject *kobj, 766 struct kobj_attribute *attr, char *page) 767 { 768 return sprintf(page, "%u\n", reipl_ccw_clear); 769 } 770 771 static ssize_t reipl_ccw_clear_store(struct kobject *kobj, 772 struct kobj_attribute *attr, 773 const char *buf, size_t len) 774 { 775 if (strtobool(buf, &reipl_ccw_clear) < 0) 776 return -EINVAL; 777 return len; 778 } 779 780 static struct kobj_attribute sys_reipl_ccw_clear_attr = 781 __ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store); 782 783 static struct attribute *reipl_ccw_attrs_vm[] = { 784 &sys_reipl_ccw_device_attr.attr, 785 &sys_reipl_ccw_loadparm_attr.attr, 786 &sys_reipl_ccw_vmparm_attr.attr, 787 &sys_reipl_ccw_clear_attr.attr, 788 NULL, 789 }; 790 791 static struct attribute *reipl_ccw_attrs_lpar[] = { 792 &sys_reipl_ccw_device_attr.attr, 793 &sys_reipl_ccw_loadparm_attr.attr, 794 &sys_reipl_ccw_clear_attr.attr, 795 NULL, 796 }; 797 798 static struct attribute_group reipl_ccw_attr_group_vm = { 799 .name = IPL_CCW_STR, 800 .attrs = reipl_ccw_attrs_vm, 801 }; 802 803 static struct attribute_group reipl_ccw_attr_group_lpar = { 804 .name = IPL_CCW_STR, 805 .attrs = reipl_ccw_attrs_lpar, 806 }; 807 808 809 /* NSS reipl device attributes */ 810 static void reipl_get_ascii_nss_name(char *dst, 811 struct ipl_parameter_block *ipb) 812 { 813 memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE); 814 EBCASC(dst, NSS_NAME_SIZE); 815 dst[NSS_NAME_SIZE] = 0; 816 } 817 818 static ssize_t reipl_nss_name_show(struct kobject *kobj, 819 struct kobj_attribute *attr, char *page) 820 { 821 char nss_name[NSS_NAME_SIZE + 1] = {}; 822 823 reipl_get_ascii_nss_name(nss_name, reipl_block_nss); 824 return sprintf(page, "%s\n", nss_name); 825 } 826 827 static ssize_t reipl_nss_name_store(struct kobject *kobj, 828 struct kobj_attribute *attr, 829 const char *buf, size_t len) 830 { 831 int nss_len; 832 833 /* ignore trailing newline */ 834 nss_len = len; 835 if ((len > 0) && (buf[len - 1] == '\n')) 836 nss_len--; 837 838 if (nss_len > NSS_NAME_SIZE) 839 return -EINVAL; 840 841 memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE); 842 if (nss_len > 0) { 843 reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS; 844 memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len); 845 ASCEBC(reipl_block_nss->ccw.nss_name, nss_len); 846 EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len); 847 } else { 848 reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS; 849 } 850 851 return len; 852 } 853 854 static struct kobj_attribute sys_reipl_nss_name_attr = 855 __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, 856 reipl_nss_name_store); 857 858 static struct kobj_attribute sys_reipl_nss_loadparm_attr = 859 __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, 860 reipl_nss_loadparm_store); 861 862 static struct attribute *reipl_nss_attrs[] = { 863 &sys_reipl_nss_name_attr.attr, 864 &sys_reipl_nss_loadparm_attr.attr, 865 &sys_reipl_nss_vmparm_attr.attr, 866 NULL, 867 }; 868 869 static struct attribute_group reipl_nss_attr_group = { 870 .name = IPL_NSS_STR, 871 .attrs = reipl_nss_attrs, 872 }; 873 874 void set_os_info_reipl_block(void) 875 { 876 os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, 877 reipl_block_actual->hdr.len); 878 } 879 880 /* reipl type */ 881 882 static int reipl_set_type(enum ipl_type type) 883 { 884 if (!(reipl_capabilities & type)) 885 return -EINVAL; 886 887 switch(type) { 888 case IPL_TYPE_CCW: 889 reipl_block_actual = reipl_block_ccw; 890 break; 891 case IPL_TYPE_FCP: 892 reipl_block_actual = reipl_block_fcp; 893 break; 894 case IPL_TYPE_NSS: 895 reipl_block_actual = reipl_block_nss; 896 break; 897 default: 898 break; 899 } 900 reipl_type = type; 901 return 0; 902 } 903 904 static ssize_t reipl_type_show(struct kobject *kobj, 905 struct kobj_attribute *attr, char *page) 906 { 907 return sprintf(page, "%s\n", ipl_type_str(reipl_type)); 908 } 909 910 static ssize_t reipl_type_store(struct kobject *kobj, 911 struct kobj_attribute *attr, 912 const char *buf, size_t len) 913 { 914 int rc = -EINVAL; 915 916 if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) 917 rc = reipl_set_type(IPL_TYPE_CCW); 918 else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) 919 rc = reipl_set_type(IPL_TYPE_FCP); 920 else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) 921 rc = reipl_set_type(IPL_TYPE_NSS); 922 return (rc != 0) ? rc : len; 923 } 924 925 static struct kobj_attribute reipl_type_attr = 926 __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); 927 928 static struct kset *reipl_kset; 929 static struct kset *reipl_fcp_kset; 930 931 static void __reipl_run(void *unused) 932 { 933 switch (reipl_type) { 934 case IPL_TYPE_CCW: 935 diag308(DIAG308_SET, reipl_block_ccw); 936 if (reipl_ccw_clear) 937 diag308(DIAG308_LOAD_CLEAR, NULL); 938 else 939 diag308(DIAG308_LOAD_NORMAL_DUMP, NULL); 940 break; 941 case IPL_TYPE_FCP: 942 diag308(DIAG308_SET, reipl_block_fcp); 943 if (reipl_fcp_clear) 944 diag308(DIAG308_LOAD_CLEAR, NULL); 945 else 946 diag308(DIAG308_LOAD_NORMAL, NULL); 947 break; 948 case IPL_TYPE_NSS: 949 diag308(DIAG308_SET, reipl_block_nss); 950 diag308(DIAG308_LOAD_CLEAR, NULL); 951 break; 952 case IPL_TYPE_UNKNOWN: 953 diag308(DIAG308_LOAD_CLEAR, NULL); 954 break; 955 case IPL_TYPE_FCP_DUMP: 956 break; 957 } 958 disabled_wait(); 959 } 960 961 static void reipl_run(struct shutdown_trigger *trigger) 962 { 963 smp_call_ipl_cpu(__reipl_run, NULL); 964 } 965 966 static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) 967 { 968 ipb->hdr.len = IPL_BP_CCW_LEN; 969 ipb->hdr.version = IPL_PARM_BLOCK_VERSION; 970 ipb->pb0_hdr.len = IPL_BP0_CCW_LEN; 971 ipb->pb0_hdr.pbt = IPL_PBT_CCW; 972 } 973 974 static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) 975 { 976 /* LOADPARM */ 977 /* check if read scp info worked and set loadparm */ 978 if (sclp_ipl_info.is_valid) 979 memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); 980 else 981 /* read scp info failed: set empty loadparm (EBCDIC blanks) */ 982 memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN); 983 ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM; 984 985 /* VM PARM */ 986 if (MACHINE_IS_VM && ipl_block_valid && 987 (ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) { 988 989 ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; 990 ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len; 991 memcpy(ipb->ccw.vm_parm, 992 ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE); 993 } 994 } 995 996 static int __init reipl_nss_init(void) 997 { 998 int rc; 999 1000 if (!MACHINE_IS_VM) 1001 return 0; 1002 1003 reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); 1004 if (!reipl_block_nss) 1005 return -ENOMEM; 1006 1007 rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); 1008 if (rc) 1009 return rc; 1010 1011 reipl_block_ccw_init(reipl_block_nss); 1012 reipl_capabilities |= IPL_TYPE_NSS; 1013 return 0; 1014 } 1015 1016 static int __init reipl_ccw_init(void) 1017 { 1018 int rc; 1019 1020 reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); 1021 if (!reipl_block_ccw) 1022 return -ENOMEM; 1023 1024 rc = sysfs_create_group(&reipl_kset->kobj, 1025 MACHINE_IS_VM ? &reipl_ccw_attr_group_vm 1026 : &reipl_ccw_attr_group_lpar); 1027 if (rc) 1028 return rc; 1029 1030 reipl_block_ccw_init(reipl_block_ccw); 1031 if (ipl_info.type == IPL_TYPE_CCW) { 1032 reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid; 1033 reipl_block_ccw->ccw.devno = ipl_block.ccw.devno; 1034 reipl_block_ccw_fill_parms(reipl_block_ccw); 1035 } 1036 1037 reipl_capabilities |= IPL_TYPE_CCW; 1038 return 0; 1039 } 1040 1041 static int __init reipl_fcp_init(void) 1042 { 1043 int rc; 1044 1045 reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); 1046 if (!reipl_block_fcp) 1047 return -ENOMEM; 1048 1049 /* sysfs: create fcp kset for mixing attr group and bin attrs */ 1050 reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, 1051 &reipl_kset->kobj); 1052 if (!reipl_fcp_kset) { 1053 free_page((unsigned long) reipl_block_fcp); 1054 return -ENOMEM; 1055 } 1056 1057 rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); 1058 if (rc) 1059 goto out1; 1060 1061 if (test_facility(141)) { 1062 rc = sysfs_create_file(&reipl_fcp_kset->kobj, 1063 &sys_reipl_fcp_clear_attr.attr); 1064 if (rc) 1065 goto out2; 1066 } else 1067 reipl_fcp_clear = true; 1068 1069 if (ipl_info.type == IPL_TYPE_FCP) { 1070 memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block)); 1071 /* 1072 * Fix loadparm: There are systems where the (SCSI) LOADPARM 1073 * is invalid in the SCSI IPL parameter block, so take it 1074 * always from sclp_ipl_info. 1075 */ 1076 memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm, 1077 LOADPARM_LEN); 1078 } else { 1079 reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN; 1080 reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; 1081 reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN; 1082 reipl_block_fcp->fcp.pbt = IPL_PBT_FCP; 1083 reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL; 1084 } 1085 reipl_capabilities |= IPL_TYPE_FCP; 1086 return 0; 1087 1088 out2: 1089 sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); 1090 out1: 1091 kset_unregister(reipl_fcp_kset); 1092 free_page((unsigned long) reipl_block_fcp); 1093 return rc; 1094 } 1095 1096 static int __init reipl_type_init(void) 1097 { 1098 enum ipl_type reipl_type = ipl_info.type; 1099 struct ipl_parameter_block *reipl_block; 1100 unsigned long size; 1101 1102 reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); 1103 if (!reipl_block) 1104 goto out; 1105 /* 1106 * If we have an OS info reipl block, this will be used 1107 */ 1108 if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) { 1109 memcpy(reipl_block_fcp, reipl_block, size); 1110 reipl_type = IPL_TYPE_FCP; 1111 } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) { 1112 memcpy(reipl_block_ccw, reipl_block, size); 1113 reipl_type = IPL_TYPE_CCW; 1114 } 1115 out: 1116 return reipl_set_type(reipl_type); 1117 } 1118 1119 static int __init reipl_init(void) 1120 { 1121 int rc; 1122 1123 reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); 1124 if (!reipl_kset) 1125 return -ENOMEM; 1126 rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); 1127 if (rc) { 1128 kset_unregister(reipl_kset); 1129 return rc; 1130 } 1131 rc = reipl_ccw_init(); 1132 if (rc) 1133 return rc; 1134 rc = reipl_fcp_init(); 1135 if (rc) 1136 return rc; 1137 rc = reipl_nss_init(); 1138 if (rc) 1139 return rc; 1140 return reipl_type_init(); 1141 } 1142 1143 static struct shutdown_action __refdata reipl_action = { 1144 .name = SHUTDOWN_ACTION_REIPL_STR, 1145 .fn = reipl_run, 1146 .init = reipl_init, 1147 }; 1148 1149 /* 1150 * dump shutdown action: Dump Linux on shutdown. 1151 */ 1152 1153 /* FCP dump device attributes */ 1154 1155 DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", 1156 dump_block_fcp->fcp.wwpn); 1157 DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", 1158 dump_block_fcp->fcp.lun); 1159 DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", 1160 dump_block_fcp->fcp.bootprog); 1161 DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", 1162 dump_block_fcp->fcp.br_lba); 1163 DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", 1164 dump_block_fcp->fcp.devno); 1165 1166 static struct attribute *dump_fcp_attrs[] = { 1167 &sys_dump_fcp_device_attr.attr, 1168 &sys_dump_fcp_wwpn_attr.attr, 1169 &sys_dump_fcp_lun_attr.attr, 1170 &sys_dump_fcp_bootprog_attr.attr, 1171 &sys_dump_fcp_br_lba_attr.attr, 1172 NULL, 1173 }; 1174 1175 static struct attribute_group dump_fcp_attr_group = { 1176 .name = IPL_FCP_STR, 1177 .attrs = dump_fcp_attrs, 1178 }; 1179 1180 /* CCW dump device attributes */ 1181 DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw); 1182 1183 static struct attribute *dump_ccw_attrs[] = { 1184 &sys_dump_ccw_device_attr.attr, 1185 NULL, 1186 }; 1187 1188 static struct attribute_group dump_ccw_attr_group = { 1189 .name = IPL_CCW_STR, 1190 .attrs = dump_ccw_attrs, 1191 }; 1192 1193 /* dump type */ 1194 1195 static int dump_set_type(enum dump_type type) 1196 { 1197 if (!(dump_capabilities & type)) 1198 return -EINVAL; 1199 dump_type = type; 1200 return 0; 1201 } 1202 1203 static ssize_t dump_type_show(struct kobject *kobj, 1204 struct kobj_attribute *attr, char *page) 1205 { 1206 return sprintf(page, "%s\n", dump_type_str(dump_type)); 1207 } 1208 1209 static ssize_t dump_type_store(struct kobject *kobj, 1210 struct kobj_attribute *attr, 1211 const char *buf, size_t len) 1212 { 1213 int rc = -EINVAL; 1214 1215 if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) 1216 rc = dump_set_type(DUMP_TYPE_NONE); 1217 else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) 1218 rc = dump_set_type(DUMP_TYPE_CCW); 1219 else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) 1220 rc = dump_set_type(DUMP_TYPE_FCP); 1221 return (rc != 0) ? rc : len; 1222 } 1223 1224 static struct kobj_attribute dump_type_attr = 1225 __ATTR(dump_type, 0644, dump_type_show, dump_type_store); 1226 1227 static struct kset *dump_kset; 1228 1229 static void diag308_dump(void *dump_block) 1230 { 1231 diag308(DIAG308_SET, dump_block); 1232 while (1) { 1233 if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302) 1234 break; 1235 udelay_simple(USEC_PER_SEC); 1236 } 1237 } 1238 1239 static void __dump_run(void *unused) 1240 { 1241 switch (dump_type) { 1242 case DUMP_TYPE_CCW: 1243 diag308_dump(dump_block_ccw); 1244 break; 1245 case DUMP_TYPE_FCP: 1246 diag308_dump(dump_block_fcp); 1247 break; 1248 default: 1249 break; 1250 } 1251 } 1252 1253 static void dump_run(struct shutdown_trigger *trigger) 1254 { 1255 if (dump_type == DUMP_TYPE_NONE) 1256 return; 1257 smp_send_stop(); 1258 smp_call_ipl_cpu(__dump_run, NULL); 1259 } 1260 1261 static int __init dump_ccw_init(void) 1262 { 1263 int rc; 1264 1265 dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); 1266 if (!dump_block_ccw) 1267 return -ENOMEM; 1268 rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); 1269 if (rc) { 1270 free_page((unsigned long)dump_block_ccw); 1271 return rc; 1272 } 1273 dump_block_ccw->hdr.len = IPL_BP_CCW_LEN; 1274 dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; 1275 dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN; 1276 dump_block_ccw->ccw.pbt = IPL_PBT_CCW; 1277 dump_capabilities |= DUMP_TYPE_CCW; 1278 return 0; 1279 } 1280 1281 static int __init dump_fcp_init(void) 1282 { 1283 int rc; 1284 1285 if (!sclp_ipl_info.has_dump) 1286 return 0; /* LDIPL DUMP is not installed */ 1287 dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); 1288 if (!dump_block_fcp) 1289 return -ENOMEM; 1290 rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); 1291 if (rc) { 1292 free_page((unsigned long)dump_block_fcp); 1293 return rc; 1294 } 1295 dump_block_fcp->hdr.len = IPL_BP_FCP_LEN; 1296 dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; 1297 dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN; 1298 dump_block_fcp->fcp.pbt = IPL_PBT_FCP; 1299 dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP; 1300 dump_capabilities |= DUMP_TYPE_FCP; 1301 return 0; 1302 } 1303 1304 static int __init dump_init(void) 1305 { 1306 int rc; 1307 1308 dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); 1309 if (!dump_kset) 1310 return -ENOMEM; 1311 rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); 1312 if (rc) { 1313 kset_unregister(dump_kset); 1314 return rc; 1315 } 1316 rc = dump_ccw_init(); 1317 if (rc) 1318 return rc; 1319 rc = dump_fcp_init(); 1320 if (rc) 1321 return rc; 1322 dump_set_type(DUMP_TYPE_NONE); 1323 return 0; 1324 } 1325 1326 static struct shutdown_action __refdata dump_action = { 1327 .name = SHUTDOWN_ACTION_DUMP_STR, 1328 .fn = dump_run, 1329 .init = dump_init, 1330 }; 1331 1332 static void dump_reipl_run(struct shutdown_trigger *trigger) 1333 { 1334 unsigned long ipib = (unsigned long) reipl_block_actual; 1335 unsigned int csum; 1336 1337 csum = (__force unsigned int) 1338 csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); 1339 mem_assign_absolute(S390_lowcore.ipib, ipib); 1340 mem_assign_absolute(S390_lowcore.ipib_checksum, csum); 1341 dump_run(trigger); 1342 } 1343 1344 static struct shutdown_action __refdata dump_reipl_action = { 1345 .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, 1346 .fn = dump_reipl_run, 1347 }; 1348 1349 /* 1350 * vmcmd shutdown action: Trigger vm command on shutdown. 1351 */ 1352 1353 static char vmcmd_on_reboot[128]; 1354 static char vmcmd_on_panic[128]; 1355 static char vmcmd_on_halt[128]; 1356 static char vmcmd_on_poff[128]; 1357 static char vmcmd_on_restart[128]; 1358 1359 DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); 1360 DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); 1361 DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); 1362 DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); 1363 DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); 1364 1365 static struct attribute *vmcmd_attrs[] = { 1366 &sys_vmcmd_on_reboot_attr.attr, 1367 &sys_vmcmd_on_panic_attr.attr, 1368 &sys_vmcmd_on_halt_attr.attr, 1369 &sys_vmcmd_on_poff_attr.attr, 1370 &sys_vmcmd_on_restart_attr.attr, 1371 NULL, 1372 }; 1373 1374 static struct attribute_group vmcmd_attr_group = { 1375 .attrs = vmcmd_attrs, 1376 }; 1377 1378 static struct kset *vmcmd_kset; 1379 1380 static void vmcmd_run(struct shutdown_trigger *trigger) 1381 { 1382 char *cmd; 1383 1384 if (strcmp(trigger->name, ON_REIPL_STR) == 0) 1385 cmd = vmcmd_on_reboot; 1386 else if (strcmp(trigger->name, ON_PANIC_STR) == 0) 1387 cmd = vmcmd_on_panic; 1388 else if (strcmp(trigger->name, ON_HALT_STR) == 0) 1389 cmd = vmcmd_on_halt; 1390 else if (strcmp(trigger->name, ON_POFF_STR) == 0) 1391 cmd = vmcmd_on_poff; 1392 else if (strcmp(trigger->name, ON_RESTART_STR) == 0) 1393 cmd = vmcmd_on_restart; 1394 else 1395 return; 1396 1397 if (strlen(cmd) == 0) 1398 return; 1399 __cpcmd(cmd, NULL, 0, NULL); 1400 } 1401 1402 static int vmcmd_init(void) 1403 { 1404 if (!MACHINE_IS_VM) 1405 return -EOPNOTSUPP; 1406 vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); 1407 if (!vmcmd_kset) 1408 return -ENOMEM; 1409 return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); 1410 } 1411 1412 static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, 1413 vmcmd_run, vmcmd_init}; 1414 1415 /* 1416 * stop shutdown action: Stop Linux on shutdown. 1417 */ 1418 1419 static void stop_run(struct shutdown_trigger *trigger) 1420 { 1421 if (strcmp(trigger->name, ON_PANIC_STR) == 0 || 1422 strcmp(trigger->name, ON_RESTART_STR) == 0) 1423 disabled_wait(); 1424 smp_stop_cpu(); 1425 } 1426 1427 static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, 1428 stop_run, NULL}; 1429 1430 /* action list */ 1431 1432 static struct shutdown_action *shutdown_actions_list[] = { 1433 &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, 1434 &vmcmd_action, &stop_action}; 1435 #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) 1436 1437 /* 1438 * Trigger section 1439 */ 1440 1441 static struct kset *shutdown_actions_kset; 1442 1443 static int set_trigger(const char *buf, struct shutdown_trigger *trigger, 1444 size_t len) 1445 { 1446 int i; 1447 1448 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { 1449 if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { 1450 if (shutdown_actions_list[i]->init_rc) { 1451 return shutdown_actions_list[i]->init_rc; 1452 } else { 1453 trigger->action = shutdown_actions_list[i]; 1454 return len; 1455 } 1456 } 1457 } 1458 return -EINVAL; 1459 } 1460 1461 /* on reipl */ 1462 1463 static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, 1464 &reipl_action}; 1465 1466 static ssize_t on_reboot_show(struct kobject *kobj, 1467 struct kobj_attribute *attr, char *page) 1468 { 1469 return sprintf(page, "%s\n", on_reboot_trigger.action->name); 1470 } 1471 1472 static ssize_t on_reboot_store(struct kobject *kobj, 1473 struct kobj_attribute *attr, 1474 const char *buf, size_t len) 1475 { 1476 return set_trigger(buf, &on_reboot_trigger, len); 1477 } 1478 static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot); 1479 1480 static void do_machine_restart(char *__unused) 1481 { 1482 smp_send_stop(); 1483 on_reboot_trigger.action->fn(&on_reboot_trigger); 1484 reipl_run(NULL); 1485 } 1486 void (*_machine_restart)(char *command) = do_machine_restart; 1487 1488 /* on panic */ 1489 1490 static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; 1491 1492 static ssize_t on_panic_show(struct kobject *kobj, 1493 struct kobj_attribute *attr, char *page) 1494 { 1495 return sprintf(page, "%s\n", on_panic_trigger.action->name); 1496 } 1497 1498 static ssize_t on_panic_store(struct kobject *kobj, 1499 struct kobj_attribute *attr, 1500 const char *buf, size_t len) 1501 { 1502 return set_trigger(buf, &on_panic_trigger, len); 1503 } 1504 static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic); 1505 1506 static void do_panic(void) 1507 { 1508 lgr_info_log(); 1509 on_panic_trigger.action->fn(&on_panic_trigger); 1510 stop_run(&on_panic_trigger); 1511 } 1512 1513 /* on restart */ 1514 1515 static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, 1516 &stop_action}; 1517 1518 static ssize_t on_restart_show(struct kobject *kobj, 1519 struct kobj_attribute *attr, char *page) 1520 { 1521 return sprintf(page, "%s\n", on_restart_trigger.action->name); 1522 } 1523 1524 static ssize_t on_restart_store(struct kobject *kobj, 1525 struct kobj_attribute *attr, 1526 const char *buf, size_t len) 1527 { 1528 return set_trigger(buf, &on_restart_trigger, len); 1529 } 1530 static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart); 1531 1532 static void __do_restart(void *ignore) 1533 { 1534 __arch_local_irq_stosm(0x04); /* enable DAT */ 1535 smp_send_stop(); 1536 #ifdef CONFIG_CRASH_DUMP 1537 crash_kexec(NULL); 1538 #endif 1539 on_restart_trigger.action->fn(&on_restart_trigger); 1540 stop_run(&on_restart_trigger); 1541 } 1542 1543 void do_restart(void) 1544 { 1545 tracing_off(); 1546 debug_locks_off(); 1547 lgr_info_log(); 1548 smp_call_online_cpu(__do_restart, NULL); 1549 } 1550 1551 /* on halt */ 1552 1553 static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; 1554 1555 static ssize_t on_halt_show(struct kobject *kobj, 1556 struct kobj_attribute *attr, char *page) 1557 { 1558 return sprintf(page, "%s\n", on_halt_trigger.action->name); 1559 } 1560 1561 static ssize_t on_halt_store(struct kobject *kobj, 1562 struct kobj_attribute *attr, 1563 const char *buf, size_t len) 1564 { 1565 return set_trigger(buf, &on_halt_trigger, len); 1566 } 1567 static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt); 1568 1569 static void do_machine_halt(void) 1570 { 1571 smp_send_stop(); 1572 on_halt_trigger.action->fn(&on_halt_trigger); 1573 stop_run(&on_halt_trigger); 1574 } 1575 void (*_machine_halt)(void) = do_machine_halt; 1576 1577 /* on power off */ 1578 1579 static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; 1580 1581 static ssize_t on_poff_show(struct kobject *kobj, 1582 struct kobj_attribute *attr, char *page) 1583 { 1584 return sprintf(page, "%s\n", on_poff_trigger.action->name); 1585 } 1586 1587 static ssize_t on_poff_store(struct kobject *kobj, 1588 struct kobj_attribute *attr, 1589 const char *buf, size_t len) 1590 { 1591 return set_trigger(buf, &on_poff_trigger, len); 1592 } 1593 static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff); 1594 1595 static void do_machine_power_off(void) 1596 { 1597 smp_send_stop(); 1598 on_poff_trigger.action->fn(&on_poff_trigger); 1599 stop_run(&on_poff_trigger); 1600 } 1601 void (*_machine_power_off)(void) = do_machine_power_off; 1602 1603 static struct attribute *shutdown_action_attrs[] = { 1604 &on_restart_attr.attr, 1605 &on_reboot_attr.attr, 1606 &on_panic_attr.attr, 1607 &on_halt_attr.attr, 1608 &on_poff_attr.attr, 1609 NULL, 1610 }; 1611 1612 static struct attribute_group shutdown_action_attr_group = { 1613 .attrs = shutdown_action_attrs, 1614 }; 1615 1616 static void __init shutdown_triggers_init(void) 1617 { 1618 shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, 1619 firmware_kobj); 1620 if (!shutdown_actions_kset) 1621 goto fail; 1622 if (sysfs_create_group(&shutdown_actions_kset->kobj, 1623 &shutdown_action_attr_group)) 1624 goto fail; 1625 return; 1626 fail: 1627 panic("shutdown_triggers_init failed\n"); 1628 } 1629 1630 static void __init shutdown_actions_init(void) 1631 { 1632 int i; 1633 1634 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { 1635 if (!shutdown_actions_list[i]->init) 1636 continue; 1637 shutdown_actions_list[i]->init_rc = 1638 shutdown_actions_list[i]->init(); 1639 } 1640 } 1641 1642 static int __init s390_ipl_init(void) 1643 { 1644 char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40}; 1645 1646 sclp_early_get_ipl_info(&sclp_ipl_info); 1647 /* 1648 * Fix loadparm: There are systems where the (SCSI) LOADPARM 1649 * returned by read SCP info is invalid (contains EBCDIC blanks) 1650 * when the system has been booted via diag308. In that case we use 1651 * the value from diag308, if available. 1652 * 1653 * There are also systems where diag308 store does not work in 1654 * case the system is booted from HMC. Fortunately in this case 1655 * READ SCP info provides the correct value. 1656 */ 1657 if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid) 1658 memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN); 1659 shutdown_actions_init(); 1660 shutdown_triggers_init(); 1661 return 0; 1662 } 1663 1664 __initcall(s390_ipl_init); 1665 1666 static void __init strncpy_skip_quote(char *dst, char *src, int n) 1667 { 1668 int sx, dx; 1669 1670 dx = 0; 1671 for (sx = 0; src[sx] != 0; sx++) { 1672 if (src[sx] == '"') 1673 continue; 1674 dst[dx++] = src[sx]; 1675 if (dx >= n) 1676 break; 1677 } 1678 } 1679 1680 static int __init vmcmd_on_reboot_setup(char *str) 1681 { 1682 if (!MACHINE_IS_VM) 1683 return 1; 1684 strncpy_skip_quote(vmcmd_on_reboot, str, 127); 1685 vmcmd_on_reboot[127] = 0; 1686 on_reboot_trigger.action = &vmcmd_action; 1687 return 1; 1688 } 1689 __setup("vmreboot=", vmcmd_on_reboot_setup); 1690 1691 static int __init vmcmd_on_panic_setup(char *str) 1692 { 1693 if (!MACHINE_IS_VM) 1694 return 1; 1695 strncpy_skip_quote(vmcmd_on_panic, str, 127); 1696 vmcmd_on_panic[127] = 0; 1697 on_panic_trigger.action = &vmcmd_action; 1698 return 1; 1699 } 1700 __setup("vmpanic=", vmcmd_on_panic_setup); 1701 1702 static int __init vmcmd_on_halt_setup(char *str) 1703 { 1704 if (!MACHINE_IS_VM) 1705 return 1; 1706 strncpy_skip_quote(vmcmd_on_halt, str, 127); 1707 vmcmd_on_halt[127] = 0; 1708 on_halt_trigger.action = &vmcmd_action; 1709 return 1; 1710 } 1711 __setup("vmhalt=", vmcmd_on_halt_setup); 1712 1713 static int __init vmcmd_on_poff_setup(char *str) 1714 { 1715 if (!MACHINE_IS_VM) 1716 return 1; 1717 strncpy_skip_quote(vmcmd_on_poff, str, 127); 1718 vmcmd_on_poff[127] = 0; 1719 on_poff_trigger.action = &vmcmd_action; 1720 return 1; 1721 } 1722 __setup("vmpoff=", vmcmd_on_poff_setup); 1723 1724 static int on_panic_notify(struct notifier_block *self, 1725 unsigned long event, void *data) 1726 { 1727 do_panic(); 1728 return NOTIFY_OK; 1729 } 1730 1731 static struct notifier_block on_panic_nb = { 1732 .notifier_call = on_panic_notify, 1733 .priority = INT_MIN, 1734 }; 1735 1736 void __init setup_ipl(void) 1737 { 1738 BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE); 1739 1740 ipl_info.type = get_ipl_type(); 1741 switch (ipl_info.type) { 1742 case IPL_TYPE_CCW: 1743 ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid; 1744 ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno; 1745 break; 1746 case IPL_TYPE_FCP: 1747 case IPL_TYPE_FCP_DUMP: 1748 ipl_info.data.fcp.dev_id.ssid = 0; 1749 ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno; 1750 ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn; 1751 ipl_info.data.fcp.lun = ipl_block.fcp.lun; 1752 break; 1753 case IPL_TYPE_NSS: 1754 case IPL_TYPE_UNKNOWN: 1755 /* We have no info to copy */ 1756 break; 1757 } 1758 atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); 1759 } 1760 1761 void s390_reset_system(void) 1762 { 1763 /* Disable prefixing */ 1764 set_prefix(0); 1765 1766 /* Disable lowcore protection */ 1767 __ctl_clear_bit(0, 28); 1768 diag_dma_ops.diag308_reset(); 1769 } 1770 1771 #ifdef CONFIG_KEXEC_FILE 1772 1773 int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, 1774 unsigned char flags, unsigned short cert) 1775 { 1776 struct ipl_report_component *comp; 1777 1778 comp = vzalloc(sizeof(*comp)); 1779 if (!comp) 1780 return -ENOMEM; 1781 list_add_tail(&comp->list, &report->components); 1782 1783 comp->entry.addr = kbuf->mem; 1784 comp->entry.len = kbuf->memsz; 1785 comp->entry.flags = flags; 1786 comp->entry.certificate_index = cert; 1787 1788 report->size += sizeof(comp->entry); 1789 1790 return 0; 1791 } 1792 1793 int ipl_report_add_certificate(struct ipl_report *report, void *key, 1794 unsigned long addr, unsigned long len) 1795 { 1796 struct ipl_report_certificate *cert; 1797 1798 cert = vzalloc(sizeof(*cert)); 1799 if (!cert) 1800 return -ENOMEM; 1801 list_add_tail(&cert->list, &report->certificates); 1802 1803 cert->entry.addr = addr; 1804 cert->entry.len = len; 1805 cert->key = key; 1806 1807 report->size += sizeof(cert->entry); 1808 report->size += cert->entry.len; 1809 1810 return 0; 1811 } 1812 1813 struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib) 1814 { 1815 struct ipl_report *report; 1816 1817 report = vzalloc(sizeof(*report)); 1818 if (!report) 1819 return ERR_PTR(-ENOMEM); 1820 1821 report->ipib = ipib; 1822 INIT_LIST_HEAD(&report->components); 1823 INIT_LIST_HEAD(&report->certificates); 1824 1825 report->size = ALIGN(ipib->hdr.len, 8); 1826 report->size += sizeof(struct ipl_rl_hdr); 1827 report->size += sizeof(struct ipl_rb_components); 1828 report->size += sizeof(struct ipl_rb_certificates); 1829 1830 return report; 1831 } 1832 1833 void *ipl_report_finish(struct ipl_report *report) 1834 { 1835 struct ipl_report_certificate *cert; 1836 struct ipl_report_component *comp; 1837 struct ipl_rb_certificates *certs; 1838 struct ipl_parameter_block *ipib; 1839 struct ipl_rb_components *comps; 1840 struct ipl_rl_hdr *rl_hdr; 1841 void *buf, *ptr; 1842 1843 buf = vzalloc(report->size); 1844 if (!buf) 1845 return ERR_PTR(-ENOMEM); 1846 ptr = buf; 1847 1848 memcpy(ptr, report->ipib, report->ipib->hdr.len); 1849 ipib = ptr; 1850 if (ipl_secure_flag) 1851 ipib->hdr.flags |= IPL_PL_FLAG_SIPL; 1852 ipib->hdr.flags |= IPL_PL_FLAG_IPLSR; 1853 ptr += report->ipib->hdr.len; 1854 ptr = PTR_ALIGN(ptr, 8); 1855 1856 rl_hdr = ptr; 1857 ptr += sizeof(*rl_hdr); 1858 1859 comps = ptr; 1860 comps->rbt = IPL_RBT_COMPONENTS; 1861 ptr += sizeof(*comps); 1862 list_for_each_entry(comp, &report->components, list) { 1863 memcpy(ptr, &comp->entry, sizeof(comp->entry)); 1864 ptr += sizeof(comp->entry); 1865 } 1866 comps->len = ptr - (void *)comps; 1867 1868 certs = ptr; 1869 certs->rbt = IPL_RBT_CERTIFICATES; 1870 ptr += sizeof(*certs); 1871 list_for_each_entry(cert, &report->certificates, list) { 1872 memcpy(ptr, &cert->entry, sizeof(cert->entry)); 1873 ptr += sizeof(cert->entry); 1874 } 1875 certs->len = ptr - (void *)certs; 1876 rl_hdr->len = ptr - (void *)rl_hdr; 1877 1878 list_for_each_entry(cert, &report->certificates, list) { 1879 memcpy(ptr, cert->key, cert->entry.len); 1880 ptr += cert->entry.len; 1881 } 1882 1883 BUG_ON(ptr > buf + report->size); 1884 return buf; 1885 } 1886 1887 int ipl_report_free(struct ipl_report *report) 1888 { 1889 struct ipl_report_component *comp, *ncomp; 1890 struct ipl_report_certificate *cert, *ncert; 1891 1892 list_for_each_entry_safe(comp, ncomp, &report->components, list) 1893 vfree(comp); 1894 1895 list_for_each_entry_safe(cert, ncert, &report->certificates, list) 1896 vfree(cert); 1897 1898 vfree(report); 1899 1900 return 0; 1901 } 1902 1903 #endif 1904