| 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 | * Volker Sameske <sameske@de.ibm.com> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/export.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/device.h> |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/kstrtox.h> |
| 16 | #include <linux/panic_notifier.h> |
| 17 | #include <linux/reboot.h> |
| 18 | #include <linux/ctype.h> |
| 19 | #include <linux/fs.h> |
| 20 | #include <linux/gfp.h> |
| 21 | #include <linux/crash_dump.h> |
| 22 | #include <linux/debug_locks.h> |
| 23 | #include <asm/asm-extable.h> |
| 24 | #include <asm/diag.h> |
| 25 | #include <asm/ipl.h> |
| 26 | #include <asm/smp.h> |
| 27 | #include <asm/setup.h> |
| 28 | #include <asm/cpcmd.h> |
| 29 | #include <asm/ebcdic.h> |
| 30 | #include <asm/sclp.h> |
| 31 | #include <asm/checksum.h> |
| 32 | #include <asm/debug.h> |
| 33 | #include <asm/abs_lowcore.h> |
| 34 | #include <asm/os_info.h> |
| 35 | #include <asm/sections.h> |
| 36 | #include <asm/boot_data.h> |
| 37 | #include "entry.h" |
| 38 | |
| 39 | #define IPL_PARM_BLOCK_VERSION 0 |
| 40 | |
| 41 | #define IPL_UNKNOWN_STR "unknown" |
| 42 | #define IPL_CCW_STR "ccw" |
| 43 | #define IPL_ECKD_STR "eckd" |
| 44 | #define IPL_ECKD_DUMP_STR "eckd_dump" |
| 45 | #define IPL_FCP_STR "fcp" |
| 46 | #define IPL_FCP_DUMP_STR "fcp_dump" |
| 47 | #define IPL_NVME_STR "nvme" |
| 48 | #define IPL_NVME_DUMP_STR "nvme_dump" |
| 49 | #define IPL_NSS_STR "nss" |
| 50 | |
| 51 | #define DUMP_CCW_STR "ccw" |
| 52 | #define DUMP_ECKD_STR "eckd" |
| 53 | #define DUMP_FCP_STR "fcp" |
| 54 | #define DUMP_NVME_STR "nvme" |
| 55 | #define DUMP_NONE_STR "none" |
| 56 | |
| 57 | /* |
| 58 | * Four shutdown trigger types are supported: |
| 59 | * - panic |
| 60 | * - halt |
| 61 | * - power off |
| 62 | * - reipl |
| 63 | * - restart |
| 64 | */ |
| 65 | #define ON_PANIC_STR "on_panic" |
| 66 | #define ON_HALT_STR "on_halt" |
| 67 | #define ON_POFF_STR "on_poff" |
| 68 | #define ON_REIPL_STR "on_reboot" |
| 69 | #define ON_RESTART_STR "on_restart" |
| 70 | |
| 71 | struct shutdown_action; |
| 72 | struct shutdown_trigger { |
| 73 | char *name; |
| 74 | struct shutdown_action *action; |
| 75 | }; |
| 76 | |
| 77 | /* |
| 78 | * The following shutdown action types are supported: |
| 79 | */ |
| 80 | #define SHUTDOWN_ACTION_IPL_STR "ipl" |
| 81 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" |
| 82 | #define SHUTDOWN_ACTION_DUMP_STR "dump" |
| 83 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" |
| 84 | #define SHUTDOWN_ACTION_STOP_STR "stop" |
| 85 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
| 86 | |
| 87 | struct shutdown_action { |
| 88 | char *name; |
| 89 | void (*fn) (struct shutdown_trigger *trigger); |
| 90 | int (*init) (void); |
| 91 | int init_rc; |
| 92 | }; |
| 93 | |
| 94 | static char *ipl_type_str(enum ipl_type type) |
| 95 | { |
| 96 | switch (type) { |
| 97 | case IPL_TYPE_CCW: |
| 98 | return IPL_CCW_STR; |
| 99 | case IPL_TYPE_ECKD: |
| 100 | return IPL_ECKD_STR; |
| 101 | case IPL_TYPE_ECKD_DUMP: |
| 102 | return IPL_ECKD_DUMP_STR; |
| 103 | case IPL_TYPE_FCP: |
| 104 | return IPL_FCP_STR; |
| 105 | case IPL_TYPE_FCP_DUMP: |
| 106 | return IPL_FCP_DUMP_STR; |
| 107 | case IPL_TYPE_NSS: |
| 108 | return IPL_NSS_STR; |
| 109 | case IPL_TYPE_NVME: |
| 110 | return IPL_NVME_STR; |
| 111 | case IPL_TYPE_NVME_DUMP: |
| 112 | return IPL_NVME_DUMP_STR; |
| 113 | case IPL_TYPE_UNKNOWN: |
| 114 | default: |
| 115 | return IPL_UNKNOWN_STR; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | enum dump_type { |
| 120 | DUMP_TYPE_NONE = 1, |
| 121 | DUMP_TYPE_CCW = 2, |
| 122 | DUMP_TYPE_FCP = 4, |
| 123 | DUMP_TYPE_NVME = 8, |
| 124 | DUMP_TYPE_ECKD = 16, |
| 125 | }; |
| 126 | |
| 127 | static char *dump_type_str(enum dump_type type) |
| 128 | { |
| 129 | switch (type) { |
| 130 | case DUMP_TYPE_NONE: |
| 131 | return DUMP_NONE_STR; |
| 132 | case DUMP_TYPE_CCW: |
| 133 | return DUMP_CCW_STR; |
| 134 | case DUMP_TYPE_ECKD: |
| 135 | return DUMP_ECKD_STR; |
| 136 | case DUMP_TYPE_FCP: |
| 137 | return DUMP_FCP_STR; |
| 138 | case DUMP_TYPE_NVME: |
| 139 | return DUMP_NVME_STR; |
| 140 | default: |
| 141 | return NULL; |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | int __bootdata_preserved(ipl_block_valid); |
| 146 | struct ipl_parameter_block __bootdata_preserved(ipl_block); |
| 147 | int __bootdata_preserved(ipl_secure_flag); |
| 148 | |
| 149 | unsigned long __bootdata_preserved(ipl_cert_list_addr); |
| 150 | unsigned long __bootdata_preserved(ipl_cert_list_size); |
| 151 | |
| 152 | unsigned long __bootdata(early_ipl_comp_list_addr); |
| 153 | unsigned long __bootdata(early_ipl_comp_list_size); |
| 154 | |
| 155 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
| 156 | |
| 157 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
| 158 | static struct ipl_parameter_block *reipl_block_fcp; |
| 159 | static struct ipl_parameter_block *reipl_block_nvme; |
| 160 | static struct ipl_parameter_block *reipl_block_ccw; |
| 161 | static struct ipl_parameter_block *reipl_block_eckd; |
| 162 | static struct ipl_parameter_block *reipl_block_nss; |
| 163 | static struct ipl_parameter_block *reipl_block_actual; |
| 164 | |
| 165 | static int dump_capabilities = DUMP_TYPE_NONE; |
| 166 | static enum dump_type dump_type = DUMP_TYPE_NONE; |
| 167 | static struct ipl_parameter_block *dump_block_fcp; |
| 168 | static struct ipl_parameter_block *dump_block_nvme; |
| 169 | static struct ipl_parameter_block *dump_block_ccw; |
| 170 | static struct ipl_parameter_block *dump_block_eckd; |
| 171 | |
| 172 | static struct sclp_ipl_info sclp_ipl_info; |
| 173 | |
| 174 | static bool reipl_nvme_clear; |
| 175 | static bool reipl_fcp_clear; |
| 176 | static bool reipl_ccw_clear; |
| 177 | static bool reipl_eckd_clear; |
| 178 | |
| 179 | static unsigned long os_info_flags; |
| 180 | |
| 181 | static inline int __diag308(unsigned long subcode, unsigned long addr) |
| 182 | { |
| 183 | union register_pair r1; |
| 184 | |
| 185 | r1.even = addr; |
| 186 | r1.odd = 0; |
| 187 | asm volatile( |
| 188 | " diag %[r1],%[subcode],0x308\n" |
| 189 | "0: nopr %%r7\n" |
| 190 | EX_TABLE(0b,0b) |
| 191 | : [r1] "+&d" (r1.pair) |
| 192 | : [subcode] "d" (subcode) |
| 193 | : "cc", "memory"); |
| 194 | return r1.odd; |
| 195 | } |
| 196 | |
| 197 | int diag308(unsigned long subcode, void *addr) |
| 198 | { |
| 199 | diag_stat_inc(DIAG_STAT_X308); |
| 200 | return __diag308(subcode, addr ? virt_to_phys(addr) : 0); |
| 201 | } |
| 202 | EXPORT_SYMBOL_GPL(diag308); |
| 203 | |
| 204 | /* SYSFS */ |
| 205 | |
| 206 | #define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ |
| 207 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
| 208 | struct kobj_attribute *attr, \ |
| 209 | char *page) \ |
| 210 | { \ |
| 211 | return scnprintf(page, PAGE_SIZE, _format, ##args); \ |
| 212 | } |
| 213 | |
| 214 | #define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ |
| 215 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
| 216 | struct kobj_attribute *attr, \ |
| 217 | const char *buf, size_t len) \ |
| 218 | { \ |
| 219 | unsigned long long ssid, devno; \ |
| 220 | \ |
| 221 | if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ |
| 222 | return -EINVAL; \ |
| 223 | \ |
| 224 | if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ |
| 225 | return -EINVAL; \ |
| 226 | \ |
| 227 | _ipl_blk.ssid = ssid; \ |
| 228 | _ipl_blk.devno = devno; \ |
| 229 | return len; \ |
| 230 | } |
| 231 | |
| 232 | #define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ |
| 233 | IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ |
| 234 | _ipl_blk.ssid, _ipl_blk.devno); \ |
| 235 | IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ |
| 236 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
| 237 | __ATTR(_name, 0644, \ |
| 238 | sys_##_prefix##_##_name##_show, \ |
| 239 | sys_##_prefix##_##_name##_store) \ |
| 240 | |
| 241 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ |
| 242 | IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ |
| 243 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
| 244 | __ATTR(_name, 0444, sys_##_prefix##_##_name##_show, NULL) |
| 245 | |
| 246 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ |
| 247 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ |
| 248 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
| 249 | struct kobj_attribute *attr, \ |
| 250 | const char *buf, size_t len) \ |
| 251 | { \ |
| 252 | unsigned long long value; \ |
| 253 | if (sscanf(buf, _fmt_in, &value) != 1) \ |
| 254 | return -EINVAL; \ |
| 255 | _value = value; \ |
| 256 | return len; \ |
| 257 | } \ |
| 258 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
| 259 | __ATTR(_name, 0644, \ |
| 260 | sys_##_prefix##_##_name##_show, \ |
| 261 | sys_##_prefix##_##_name##_store) |
| 262 | |
| 263 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
| 264 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ |
| 265 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
| 266 | struct kobj_attribute *attr, \ |
| 267 | const char *buf, size_t len) \ |
| 268 | { \ |
| 269 | strscpy(_value, buf, sizeof(_value)); \ |
| 270 | strim(_value); \ |
| 271 | return len; \ |
| 272 | } \ |
| 273 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
| 274 | __ATTR(_name, 0644, \ |
| 275 | sys_##_prefix##_##_name##_show, \ |
| 276 | sys_##_prefix##_##_name##_store) |
| 277 | |
| 278 | /* |
| 279 | * ipl section |
| 280 | */ |
| 281 | |
| 282 | static __init enum ipl_type get_ipl_type(void) |
| 283 | { |
| 284 | if (!ipl_block_valid) |
| 285 | return IPL_TYPE_UNKNOWN; |
| 286 | |
| 287 | switch (ipl_block.pb0_hdr.pbt) { |
| 288 | case IPL_PBT_CCW: |
| 289 | return IPL_TYPE_CCW; |
| 290 | case IPL_PBT_FCP: |
| 291 | if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) |
| 292 | return IPL_TYPE_FCP_DUMP; |
| 293 | else |
| 294 | return IPL_TYPE_FCP; |
| 295 | case IPL_PBT_NVME: |
| 296 | if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP) |
| 297 | return IPL_TYPE_NVME_DUMP; |
| 298 | else |
| 299 | return IPL_TYPE_NVME; |
| 300 | case IPL_PBT_ECKD: |
| 301 | if (ipl_block.eckd.opt == IPL_PB0_ECKD_OPT_DUMP) |
| 302 | return IPL_TYPE_ECKD_DUMP; |
| 303 | else |
| 304 | return IPL_TYPE_ECKD; |
| 305 | } |
| 306 | return IPL_TYPE_UNKNOWN; |
| 307 | } |
| 308 | |
| 309 | struct ipl_info ipl_info; |
| 310 | EXPORT_SYMBOL_GPL(ipl_info); |
| 311 | |
| 312 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
| 313 | char *page) |
| 314 | { |
| 315 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
| 316 | } |
| 317 | |
| 318 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
| 319 | |
| 320 | static ssize_t ipl_secure_show(struct kobject *kobj, |
| 321 | struct kobj_attribute *attr, char *page) |
| 322 | { |
| 323 | return sprintf(page, "%i\n", !!ipl_secure_flag); |
| 324 | } |
| 325 | |
| 326 | static struct kobj_attribute sys_ipl_secure_attr = |
| 327 | __ATTR(secure, 0444, ipl_secure_show, NULL); |
| 328 | |
| 329 | static ssize_t ipl_has_secure_show(struct kobject *kobj, |
| 330 | struct kobj_attribute *attr, char *page) |
| 331 | { |
| 332 | return sprintf(page, "%i\n", !!sclp.has_sipl); |
| 333 | } |
| 334 | |
| 335 | static struct kobj_attribute sys_ipl_has_secure_attr = |
| 336 | __ATTR(has_secure, 0444, ipl_has_secure_show, NULL); |
| 337 | |
| 338 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, |
| 339 | struct kobj_attribute *attr, char *page) |
| 340 | { |
| 341 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; |
| 342 | |
| 343 | if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW)) |
| 344 | ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block); |
| 345 | return sprintf(page, "%s\n", parm); |
| 346 | } |
| 347 | |
| 348 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
| 349 | __ATTR(parm, 0444, ipl_vm_parm_show, NULL); |
| 350 | |
| 351 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
| 352 | struct kobj_attribute *attr, char *page) |
| 353 | { |
| 354 | switch (ipl_info.type) { |
| 355 | case IPL_TYPE_CCW: |
| 356 | return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid, |
| 357 | ipl_block.ccw.devno); |
| 358 | case IPL_TYPE_ECKD: |
| 359 | case IPL_TYPE_ECKD_DUMP: |
| 360 | return sprintf(page, "0.%x.%04x\n", ipl_block.eckd.ssid, |
| 361 | ipl_block.eckd.devno); |
| 362 | case IPL_TYPE_FCP: |
| 363 | case IPL_TYPE_FCP_DUMP: |
| 364 | return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno); |
| 365 | case IPL_TYPE_NVME: |
| 366 | case IPL_TYPE_NVME_DUMP: |
| 367 | return sprintf(page, "%08ux\n", ipl_block.nvme.fid); |
| 368 | default: |
| 369 | return 0; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | static struct kobj_attribute sys_ipl_device_attr = |
| 374 | __ATTR(device, 0444, sys_ipl_device_show, NULL); |
| 375 | |
| 376 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
| 377 | struct bin_attribute *attr, char *buf, |
| 378 | loff_t off, size_t count) |
| 379 | { |
| 380 | return memory_read_from_buffer(buf, count, &off, &ipl_block, |
| 381 | ipl_block.hdr.len); |
| 382 | } |
| 383 | static struct bin_attribute ipl_parameter_attr = |
| 384 | __BIN_ATTR(binary_parameter, 0444, ipl_parameter_read, NULL, |
| 385 | PAGE_SIZE); |
| 386 | |
| 387 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
| 388 | struct bin_attribute *attr, char *buf, |
| 389 | loff_t off, size_t count) |
| 390 | { |
| 391 | unsigned int size = ipl_block.fcp.scp_data_len; |
| 392 | void *scp_data = &ipl_block.fcp.scp_data; |
| 393 | |
| 394 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 395 | } |
| 396 | |
| 397 | static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj, |
| 398 | struct bin_attribute *attr, char *buf, |
| 399 | loff_t off, size_t count) |
| 400 | { |
| 401 | unsigned int size = ipl_block.nvme.scp_data_len; |
| 402 | void *scp_data = &ipl_block.nvme.scp_data; |
| 403 | |
| 404 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 405 | } |
| 406 | |
| 407 | static ssize_t ipl_eckd_scp_data_read(struct file *filp, struct kobject *kobj, |
| 408 | struct bin_attribute *attr, char *buf, |
| 409 | loff_t off, size_t count) |
| 410 | { |
| 411 | unsigned int size = ipl_block.eckd.scp_data_len; |
| 412 | void *scp_data = &ipl_block.eckd.scp_data; |
| 413 | |
| 414 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 415 | } |
| 416 | |
| 417 | static struct bin_attribute ipl_scp_data_attr = |
| 418 | __BIN_ATTR(scp_data, 0444, ipl_scp_data_read, NULL, PAGE_SIZE); |
| 419 | |
| 420 | static struct bin_attribute ipl_nvme_scp_data_attr = |
| 421 | __BIN_ATTR(scp_data, 0444, ipl_nvme_scp_data_read, NULL, PAGE_SIZE); |
| 422 | |
| 423 | static struct bin_attribute ipl_eckd_scp_data_attr = |
| 424 | __BIN_ATTR(scp_data, 0444, ipl_eckd_scp_data_read, NULL, PAGE_SIZE); |
| 425 | |
| 426 | static struct bin_attribute *ipl_fcp_bin_attrs[] = { |
| 427 | &ipl_parameter_attr, |
| 428 | &ipl_scp_data_attr, |
| 429 | NULL, |
| 430 | }; |
| 431 | |
| 432 | static struct bin_attribute *ipl_nvme_bin_attrs[] = { |
| 433 | &ipl_parameter_attr, |
| 434 | &ipl_nvme_scp_data_attr, |
| 435 | NULL, |
| 436 | }; |
| 437 | |
| 438 | static struct bin_attribute *ipl_eckd_bin_attrs[] = { |
| 439 | &ipl_parameter_attr, |
| 440 | &ipl_eckd_scp_data_attr, |
| 441 | NULL, |
| 442 | }; |
| 443 | |
| 444 | /* FCP ipl device attributes */ |
| 445 | |
| 446 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", |
| 447 | (unsigned long long)ipl_block.fcp.wwpn); |
| 448 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", |
| 449 | (unsigned long long)ipl_block.fcp.lun); |
| 450 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", |
| 451 | (unsigned long long)ipl_block.fcp.bootprog); |
| 452 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", |
| 453 | (unsigned long long)ipl_block.fcp.br_lba); |
| 454 | |
| 455 | /* NVMe ipl device attributes */ |
| 456 | DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n", |
| 457 | (unsigned long long)ipl_block.nvme.fid); |
| 458 | DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n", |
| 459 | (unsigned long long)ipl_block.nvme.nsid); |
| 460 | DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n", |
| 461 | (unsigned long long)ipl_block.nvme.bootprog); |
| 462 | DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n", |
| 463 | (unsigned long long)ipl_block.nvme.br_lba); |
| 464 | |
| 465 | /* ECKD ipl device attributes */ |
| 466 | DEFINE_IPL_ATTR_RO(ipl_eckd, bootprog, "%lld\n", |
| 467 | (unsigned long long)ipl_block.eckd.bootprog); |
| 468 | |
| 469 | #define IPL_ATTR_BR_CHR_SHOW_FN(_name, _ipb) \ |
| 470 | static ssize_t eckd_##_name##_br_chr_show(struct kobject *kobj, \ |
| 471 | struct kobj_attribute *attr, \ |
| 472 | char *buf) \ |
| 473 | { \ |
| 474 | struct ipl_pb0_eckd *ipb = &(_ipb); \ |
| 475 | \ |
| 476 | if (!ipb->br_chr.cyl && \ |
| 477 | !ipb->br_chr.head && \ |
| 478 | !ipb->br_chr.record) \ |
| 479 | return sprintf(buf, "auto\n"); \ |
| 480 | \ |
| 481 | return sprintf(buf, "0x%x,0x%x,0x%x\n", \ |
| 482 | ipb->br_chr.cyl, \ |
| 483 | ipb->br_chr.head, \ |
| 484 | ipb->br_chr.record); \ |
| 485 | } |
| 486 | |
| 487 | #define IPL_ATTR_BR_CHR_STORE_FN(_name, _ipb) \ |
| 488 | static ssize_t eckd_##_name##_br_chr_store(struct kobject *kobj, \ |
| 489 | struct kobj_attribute *attr, \ |
| 490 | const char *buf, size_t len) \ |
| 491 | { \ |
| 492 | struct ipl_pb0_eckd *ipb = &(_ipb); \ |
| 493 | unsigned long args[3] = { 0 }; \ |
| 494 | char *p, *p1, *tmp = NULL; \ |
| 495 | int i, rc; \ |
| 496 | \ |
| 497 | if (!strncmp(buf, "auto", 4)) \ |
| 498 | goto out; \ |
| 499 | \ |
| 500 | tmp = kstrdup(buf, GFP_KERNEL); \ |
| 501 | p = tmp; \ |
| 502 | for (i = 0; i < 3; i++) { \ |
| 503 | p1 = strsep(&p, ", "); \ |
| 504 | if (!p1) { \ |
| 505 | rc = -EINVAL; \ |
| 506 | goto err; \ |
| 507 | } \ |
| 508 | rc = kstrtoul(p1, 0, args + i); \ |
| 509 | if (rc) \ |
| 510 | goto err; \ |
| 511 | } \ |
| 512 | \ |
| 513 | rc = -EINVAL; \ |
| 514 | if (i != 3) \ |
| 515 | goto err; \ |
| 516 | \ |
| 517 | if ((args[0] || args[1]) && !args[2]) \ |
| 518 | goto err; \ |
| 519 | \ |
| 520 | if (args[0] > UINT_MAX || args[1] > 255 || args[2] > 255) \ |
| 521 | goto err; \ |
| 522 | \ |
| 523 | out: \ |
| 524 | ipb->br_chr.cyl = args[0]; \ |
| 525 | ipb->br_chr.head = args[1]; \ |
| 526 | ipb->br_chr.record = args[2]; \ |
| 527 | rc = len; \ |
| 528 | err: \ |
| 529 | kfree(tmp); \ |
| 530 | return rc; \ |
| 531 | } |
| 532 | |
| 533 | IPL_ATTR_BR_CHR_SHOW_FN(ipl, ipl_block.eckd); |
| 534 | static struct kobj_attribute sys_ipl_eckd_br_chr_attr = |
| 535 | __ATTR(br_chr, 0644, eckd_ipl_br_chr_show, NULL); |
| 536 | |
| 537 | IPL_ATTR_BR_CHR_SHOW_FN(reipl, reipl_block_eckd->eckd); |
| 538 | IPL_ATTR_BR_CHR_STORE_FN(reipl, reipl_block_eckd->eckd); |
| 539 | |
| 540 | static struct kobj_attribute sys_reipl_eckd_br_chr_attr = |
| 541 | __ATTR(br_chr, 0644, eckd_reipl_br_chr_show, eckd_reipl_br_chr_store); |
| 542 | |
| 543 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
| 544 | struct kobj_attribute *attr, char *page) |
| 545 | { |
| 546 | char loadparm[LOADPARM_LEN + 1] = {}; |
| 547 | |
| 548 | if (!sclp_ipl_info.is_valid) |
| 549 | return sprintf(page, "#unknown#\n"); |
| 550 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
| 551 | EBCASC(loadparm, LOADPARM_LEN); |
| 552 | strim(loadparm); |
| 553 | return sprintf(page, "%s\n", loadparm); |
| 554 | } |
| 555 | |
| 556 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
| 557 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
| 558 | |
| 559 | static struct attribute *ipl_fcp_attrs[] = { |
| 560 | &sys_ipl_device_attr.attr, |
| 561 | &sys_ipl_fcp_wwpn_attr.attr, |
| 562 | &sys_ipl_fcp_lun_attr.attr, |
| 563 | &sys_ipl_fcp_bootprog_attr.attr, |
| 564 | &sys_ipl_fcp_br_lba_attr.attr, |
| 565 | &sys_ipl_ccw_loadparm_attr.attr, |
| 566 | NULL, |
| 567 | }; |
| 568 | |
| 569 | static struct attribute_group ipl_fcp_attr_group = { |
| 570 | .attrs = ipl_fcp_attrs, |
| 571 | .bin_attrs = ipl_fcp_bin_attrs, |
| 572 | }; |
| 573 | |
| 574 | static struct attribute *ipl_nvme_attrs[] = { |
| 575 | &sys_ipl_nvme_fid_attr.attr, |
| 576 | &sys_ipl_nvme_nsid_attr.attr, |
| 577 | &sys_ipl_nvme_bootprog_attr.attr, |
| 578 | &sys_ipl_nvme_br_lba_attr.attr, |
| 579 | &sys_ipl_ccw_loadparm_attr.attr, |
| 580 | NULL, |
| 581 | }; |
| 582 | |
| 583 | static struct attribute_group ipl_nvme_attr_group = { |
| 584 | .attrs = ipl_nvme_attrs, |
| 585 | .bin_attrs = ipl_nvme_bin_attrs, |
| 586 | }; |
| 587 | |
| 588 | static struct attribute *ipl_eckd_attrs[] = { |
| 589 | &sys_ipl_eckd_bootprog_attr.attr, |
| 590 | &sys_ipl_eckd_br_chr_attr.attr, |
| 591 | &sys_ipl_ccw_loadparm_attr.attr, |
| 592 | &sys_ipl_device_attr.attr, |
| 593 | NULL, |
| 594 | }; |
| 595 | |
| 596 | static struct attribute_group ipl_eckd_attr_group = { |
| 597 | .attrs = ipl_eckd_attrs, |
| 598 | .bin_attrs = ipl_eckd_bin_attrs, |
| 599 | }; |
| 600 | |
| 601 | /* CCW ipl device attributes */ |
| 602 | |
| 603 | static struct attribute *ipl_ccw_attrs_vm[] = { |
| 604 | &sys_ipl_device_attr.attr, |
| 605 | &sys_ipl_ccw_loadparm_attr.attr, |
| 606 | &sys_ipl_vm_parm_attr.attr, |
| 607 | NULL, |
| 608 | }; |
| 609 | |
| 610 | static struct attribute *ipl_ccw_attrs_lpar[] = { |
| 611 | &sys_ipl_device_attr.attr, |
| 612 | &sys_ipl_ccw_loadparm_attr.attr, |
| 613 | NULL, |
| 614 | }; |
| 615 | |
| 616 | static struct attribute_group ipl_ccw_attr_group_vm = { |
| 617 | .attrs = ipl_ccw_attrs_vm, |
| 618 | }; |
| 619 | |
| 620 | static struct attribute_group ipl_ccw_attr_group_lpar = { |
| 621 | .attrs = ipl_ccw_attrs_lpar |
| 622 | }; |
| 623 | |
| 624 | static struct attribute *ipl_common_attrs[] = { |
| 625 | &sys_ipl_type_attr.attr, |
| 626 | &sys_ipl_secure_attr.attr, |
| 627 | &sys_ipl_has_secure_attr.attr, |
| 628 | NULL, |
| 629 | }; |
| 630 | |
| 631 | static struct attribute_group ipl_common_attr_group = { |
| 632 | .attrs = ipl_common_attrs, |
| 633 | }; |
| 634 | |
| 635 | static struct kset *ipl_kset; |
| 636 | |
| 637 | static void __ipl_run(void *unused) |
| 638 | { |
| 639 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 640 | } |
| 641 | |
| 642 | static void ipl_run(struct shutdown_trigger *trigger) |
| 643 | { |
| 644 | smp_call_ipl_cpu(__ipl_run, NULL); |
| 645 | } |
| 646 | |
| 647 | static int __init ipl_init(void) |
| 648 | { |
| 649 | int rc; |
| 650 | |
| 651 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); |
| 652 | if (!ipl_kset) { |
| 653 | rc = -ENOMEM; |
| 654 | goto out; |
| 655 | } |
| 656 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_common_attr_group); |
| 657 | if (rc) |
| 658 | goto out; |
| 659 | switch (ipl_info.type) { |
| 660 | case IPL_TYPE_CCW: |
| 661 | if (MACHINE_IS_VM) |
| 662 | rc = sysfs_create_group(&ipl_kset->kobj, |
| 663 | &ipl_ccw_attr_group_vm); |
| 664 | else |
| 665 | rc = sysfs_create_group(&ipl_kset->kobj, |
| 666 | &ipl_ccw_attr_group_lpar); |
| 667 | break; |
| 668 | case IPL_TYPE_ECKD: |
| 669 | case IPL_TYPE_ECKD_DUMP: |
| 670 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_eckd_attr_group); |
| 671 | break; |
| 672 | case IPL_TYPE_FCP: |
| 673 | case IPL_TYPE_FCP_DUMP: |
| 674 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); |
| 675 | break; |
| 676 | case IPL_TYPE_NVME: |
| 677 | case IPL_TYPE_NVME_DUMP: |
| 678 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nvme_attr_group); |
| 679 | break; |
| 680 | default: |
| 681 | break; |
| 682 | } |
| 683 | out: |
| 684 | if (rc) |
| 685 | panic("ipl_init failed: rc = %i\n", rc); |
| 686 | |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | static struct shutdown_action __refdata ipl_action = { |
| 691 | .name = SHUTDOWN_ACTION_IPL_STR, |
| 692 | .fn = ipl_run, |
| 693 | .init = ipl_init, |
| 694 | }; |
| 695 | |
| 696 | /* |
| 697 | * reipl shutdown action: Reboot Linux on shutdown. |
| 698 | */ |
| 699 | |
| 700 | /* VM IPL PARM attributes */ |
| 701 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, |
| 702 | char *page) |
| 703 | { |
| 704 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; |
| 705 | |
| 706 | ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
| 707 | return sprintf(page, "%s\n", vmparm); |
| 708 | } |
| 709 | |
| 710 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, |
| 711 | size_t vmparm_max, |
| 712 | const char *buf, size_t len) |
| 713 | { |
| 714 | int i, ip_len; |
| 715 | |
| 716 | /* ignore trailing newline */ |
| 717 | ip_len = len; |
| 718 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 719 | ip_len--; |
| 720 | |
| 721 | if (ip_len > vmparm_max) |
| 722 | return -EINVAL; |
| 723 | |
| 724 | /* parm is used to store kernel options, check for common chars */ |
| 725 | for (i = 0; i < ip_len; i++) |
| 726 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) |
| 727 | return -EINVAL; |
| 728 | |
| 729 | memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); |
| 730 | ipb->ccw.vm_parm_len = ip_len; |
| 731 | if (ip_len > 0) { |
| 732 | ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; |
| 733 | memcpy(ipb->ccw.vm_parm, buf, ip_len); |
| 734 | ASCEBC(ipb->ccw.vm_parm, ip_len); |
| 735 | } else { |
| 736 | ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP; |
| 737 | } |
| 738 | |
| 739 | return len; |
| 740 | } |
| 741 | |
| 742 | /* NSS wrapper */ |
| 743 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, |
| 744 | struct kobj_attribute *attr, char *page) |
| 745 | { |
| 746 | return reipl_generic_vmparm_show(reipl_block_nss, page); |
| 747 | } |
| 748 | |
| 749 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, |
| 750 | struct kobj_attribute *attr, |
| 751 | const char *buf, size_t len) |
| 752 | { |
| 753 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); |
| 754 | } |
| 755 | |
| 756 | /* CCW wrapper */ |
| 757 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, |
| 758 | struct kobj_attribute *attr, char *page) |
| 759 | { |
| 760 | return reipl_generic_vmparm_show(reipl_block_ccw, page); |
| 761 | } |
| 762 | |
| 763 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, |
| 764 | struct kobj_attribute *attr, |
| 765 | const char *buf, size_t len) |
| 766 | { |
| 767 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); |
| 768 | } |
| 769 | |
| 770 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = |
| 771 | __ATTR(parm, 0644, reipl_nss_vmparm_show, |
| 772 | reipl_nss_vmparm_store); |
| 773 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = |
| 774 | __ATTR(parm, 0644, reipl_ccw_vmparm_show, |
| 775 | reipl_ccw_vmparm_store); |
| 776 | |
| 777 | /* FCP reipl device attributes */ |
| 778 | |
| 779 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
| 780 | struct bin_attribute *attr, |
| 781 | char *buf, loff_t off, size_t count) |
| 782 | { |
| 783 | size_t size = reipl_block_fcp->fcp.scp_data_len; |
| 784 | void *scp_data = reipl_block_fcp->fcp.scp_data; |
| 785 | |
| 786 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 787 | } |
| 788 | |
| 789 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
| 790 | struct bin_attribute *attr, |
| 791 | char *buf, loff_t off, size_t count) |
| 792 | { |
| 793 | size_t scpdata_len = count; |
| 794 | size_t padding; |
| 795 | |
| 796 | |
| 797 | if (off) |
| 798 | return -EINVAL; |
| 799 | |
| 800 | memcpy(reipl_block_fcp->fcp.scp_data, buf, count); |
| 801 | if (scpdata_len % 8) { |
| 802 | padding = 8 - (scpdata_len % 8); |
| 803 | memset(reipl_block_fcp->fcp.scp_data + scpdata_len, |
| 804 | 0, padding); |
| 805 | scpdata_len += padding; |
| 806 | } |
| 807 | |
| 808 | reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len; |
| 809 | reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len; |
| 810 | reipl_block_fcp->fcp.scp_data_len = scpdata_len; |
| 811 | |
| 812 | return count; |
| 813 | } |
| 814 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = |
| 815 | __BIN_ATTR(scp_data, 0644, reipl_fcp_scpdata_read, |
| 816 | reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE); |
| 817 | |
| 818 | static struct bin_attribute *reipl_fcp_bin_attrs[] = { |
| 819 | &sys_reipl_fcp_scp_data_attr, |
| 820 | NULL, |
| 821 | }; |
| 822 | |
| 823 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n", |
| 824 | reipl_block_fcp->fcp.wwpn); |
| 825 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n", |
| 826 | reipl_block_fcp->fcp.lun); |
| 827 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", |
| 828 | reipl_block_fcp->fcp.bootprog); |
| 829 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", |
| 830 | reipl_block_fcp->fcp.br_lba); |
| 831 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 832 | reipl_block_fcp->fcp.devno); |
| 833 | |
| 834 | static void reipl_get_ascii_loadparm(char *loadparm, |
| 835 | struct ipl_parameter_block *ibp) |
| 836 | { |
| 837 | memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN); |
| 838 | EBCASC(loadparm, LOADPARM_LEN); |
| 839 | loadparm[LOADPARM_LEN] = 0; |
| 840 | strim(loadparm); |
| 841 | } |
| 842 | |
| 843 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
| 844 | char *page) |
| 845 | { |
| 846 | char buf[LOADPARM_LEN + 1]; |
| 847 | |
| 848 | reipl_get_ascii_loadparm(buf, ipb); |
| 849 | return sprintf(page, "%s\n", buf); |
| 850 | } |
| 851 | |
| 852 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
| 853 | const char *buf, size_t len) |
| 854 | { |
| 855 | int i, lp_len; |
| 856 | |
| 857 | /* ignore trailing newline */ |
| 858 | lp_len = len; |
| 859 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 860 | lp_len--; |
| 861 | /* loadparm can have max 8 characters and must not start with a blank */ |
| 862 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) |
| 863 | return -EINVAL; |
| 864 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ |
| 865 | for (i = 0; i < lp_len; i++) { |
| 866 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || |
| 867 | (buf[i] == '.')) |
| 868 | continue; |
| 869 | return -EINVAL; |
| 870 | } |
| 871 | /* initialize loadparm with blanks */ |
| 872 | memset(ipb->common.loadparm, ' ', LOADPARM_LEN); |
| 873 | /* copy and convert to ebcdic */ |
| 874 | memcpy(ipb->common.loadparm, buf, lp_len); |
| 875 | ASCEBC(ipb->common.loadparm, LOADPARM_LEN); |
| 876 | ipb->common.flags |= IPL_PB0_FLAG_LOADPARM; |
| 877 | return len; |
| 878 | } |
| 879 | |
| 880 | #define DEFINE_GENERIC_LOADPARM(name) \ |
| 881 | static ssize_t reipl_##name##_loadparm_show(struct kobject *kobj, \ |
| 882 | struct kobj_attribute *attr, char *page) \ |
| 883 | { \ |
| 884 | return reipl_generic_loadparm_show(reipl_block_##name, page); \ |
| 885 | } \ |
| 886 | static ssize_t reipl_##name##_loadparm_store(struct kobject *kobj, \ |
| 887 | struct kobj_attribute *attr, \ |
| 888 | const char *buf, size_t len) \ |
| 889 | { \ |
| 890 | return reipl_generic_loadparm_store(reipl_block_##name, buf, len); \ |
| 891 | } \ |
| 892 | static struct kobj_attribute sys_reipl_##name##_loadparm_attr = \ |
| 893 | __ATTR(loadparm, 0644, reipl_##name##_loadparm_show, \ |
| 894 | reipl_##name##_loadparm_store) |
| 895 | |
| 896 | DEFINE_GENERIC_LOADPARM(fcp); |
| 897 | DEFINE_GENERIC_LOADPARM(nvme); |
| 898 | DEFINE_GENERIC_LOADPARM(ccw); |
| 899 | DEFINE_GENERIC_LOADPARM(nss); |
| 900 | DEFINE_GENERIC_LOADPARM(eckd); |
| 901 | |
| 902 | static ssize_t reipl_fcp_clear_show(struct kobject *kobj, |
| 903 | struct kobj_attribute *attr, char *page) |
| 904 | { |
| 905 | return sprintf(page, "%u\n", reipl_fcp_clear); |
| 906 | } |
| 907 | |
| 908 | static ssize_t reipl_fcp_clear_store(struct kobject *kobj, |
| 909 | struct kobj_attribute *attr, |
| 910 | const char *buf, size_t len) |
| 911 | { |
| 912 | if (kstrtobool(buf, &reipl_fcp_clear) < 0) |
| 913 | return -EINVAL; |
| 914 | return len; |
| 915 | } |
| 916 | |
| 917 | static struct attribute *reipl_fcp_attrs[] = { |
| 918 | &sys_reipl_fcp_device_attr.attr, |
| 919 | &sys_reipl_fcp_wwpn_attr.attr, |
| 920 | &sys_reipl_fcp_lun_attr.attr, |
| 921 | &sys_reipl_fcp_bootprog_attr.attr, |
| 922 | &sys_reipl_fcp_br_lba_attr.attr, |
| 923 | &sys_reipl_fcp_loadparm_attr.attr, |
| 924 | NULL, |
| 925 | }; |
| 926 | |
| 927 | static struct attribute_group reipl_fcp_attr_group = { |
| 928 | .attrs = reipl_fcp_attrs, |
| 929 | .bin_attrs = reipl_fcp_bin_attrs, |
| 930 | }; |
| 931 | |
| 932 | static struct kobj_attribute sys_reipl_fcp_clear_attr = |
| 933 | __ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store); |
| 934 | |
| 935 | /* NVME reipl device attributes */ |
| 936 | |
| 937 | static ssize_t reipl_nvme_scpdata_read(struct file *filp, struct kobject *kobj, |
| 938 | struct bin_attribute *attr, |
| 939 | char *buf, loff_t off, size_t count) |
| 940 | { |
| 941 | size_t size = reipl_block_nvme->nvme.scp_data_len; |
| 942 | void *scp_data = reipl_block_nvme->nvme.scp_data; |
| 943 | |
| 944 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 945 | } |
| 946 | |
| 947 | static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj, |
| 948 | struct bin_attribute *attr, |
| 949 | char *buf, loff_t off, size_t count) |
| 950 | { |
| 951 | size_t scpdata_len = count; |
| 952 | size_t padding; |
| 953 | |
| 954 | if (off) |
| 955 | return -EINVAL; |
| 956 | |
| 957 | memcpy(reipl_block_nvme->nvme.scp_data, buf, count); |
| 958 | if (scpdata_len % 8) { |
| 959 | padding = 8 - (scpdata_len % 8); |
| 960 | memset(reipl_block_nvme->nvme.scp_data + scpdata_len, |
| 961 | 0, padding); |
| 962 | scpdata_len += padding; |
| 963 | } |
| 964 | |
| 965 | reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len; |
| 966 | reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len; |
| 967 | reipl_block_nvme->nvme.scp_data_len = scpdata_len; |
| 968 | |
| 969 | return count; |
| 970 | } |
| 971 | |
| 972 | static struct bin_attribute sys_reipl_nvme_scp_data_attr = |
| 973 | __BIN_ATTR(scp_data, 0644, reipl_nvme_scpdata_read, |
| 974 | reipl_nvme_scpdata_write, DIAG308_SCPDATA_SIZE); |
| 975 | |
| 976 | static struct bin_attribute *reipl_nvme_bin_attrs[] = { |
| 977 | &sys_reipl_nvme_scp_data_attr, |
| 978 | NULL, |
| 979 | }; |
| 980 | |
| 981 | DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n", |
| 982 | reipl_block_nvme->nvme.fid); |
| 983 | DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n", |
| 984 | reipl_block_nvme->nvme.nsid); |
| 985 | DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n", |
| 986 | reipl_block_nvme->nvme.bootprog); |
| 987 | DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n", |
| 988 | reipl_block_nvme->nvme.br_lba); |
| 989 | |
| 990 | static struct attribute *reipl_nvme_attrs[] = { |
| 991 | &sys_reipl_nvme_fid_attr.attr, |
| 992 | &sys_reipl_nvme_nsid_attr.attr, |
| 993 | &sys_reipl_nvme_bootprog_attr.attr, |
| 994 | &sys_reipl_nvme_br_lba_attr.attr, |
| 995 | &sys_reipl_nvme_loadparm_attr.attr, |
| 996 | NULL, |
| 997 | }; |
| 998 | |
| 999 | static struct attribute_group reipl_nvme_attr_group = { |
| 1000 | .attrs = reipl_nvme_attrs, |
| 1001 | .bin_attrs = reipl_nvme_bin_attrs |
| 1002 | }; |
| 1003 | |
| 1004 | static ssize_t reipl_nvme_clear_show(struct kobject *kobj, |
| 1005 | struct kobj_attribute *attr, char *page) |
| 1006 | { |
| 1007 | return sprintf(page, "%u\n", reipl_nvme_clear); |
| 1008 | } |
| 1009 | |
| 1010 | static ssize_t reipl_nvme_clear_store(struct kobject *kobj, |
| 1011 | struct kobj_attribute *attr, |
| 1012 | const char *buf, size_t len) |
| 1013 | { |
| 1014 | if (kstrtobool(buf, &reipl_nvme_clear) < 0) |
| 1015 | return -EINVAL; |
| 1016 | return len; |
| 1017 | } |
| 1018 | |
| 1019 | static struct kobj_attribute sys_reipl_nvme_clear_attr = |
| 1020 | __ATTR(clear, 0644, reipl_nvme_clear_show, reipl_nvme_clear_store); |
| 1021 | |
| 1022 | /* CCW reipl device attributes */ |
| 1023 | DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw); |
| 1024 | |
| 1025 | static ssize_t reipl_ccw_clear_show(struct kobject *kobj, |
| 1026 | struct kobj_attribute *attr, char *page) |
| 1027 | { |
| 1028 | return sprintf(page, "%u\n", reipl_ccw_clear); |
| 1029 | } |
| 1030 | |
| 1031 | static ssize_t reipl_ccw_clear_store(struct kobject *kobj, |
| 1032 | struct kobj_attribute *attr, |
| 1033 | const char *buf, size_t len) |
| 1034 | { |
| 1035 | if (kstrtobool(buf, &reipl_ccw_clear) < 0) |
| 1036 | return -EINVAL; |
| 1037 | return len; |
| 1038 | } |
| 1039 | |
| 1040 | static struct kobj_attribute sys_reipl_ccw_clear_attr = |
| 1041 | __ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store); |
| 1042 | |
| 1043 | static struct attribute *reipl_ccw_attrs_vm[] = { |
| 1044 | &sys_reipl_ccw_device_attr.attr, |
| 1045 | &sys_reipl_ccw_loadparm_attr.attr, |
| 1046 | &sys_reipl_ccw_vmparm_attr.attr, |
| 1047 | &sys_reipl_ccw_clear_attr.attr, |
| 1048 | NULL, |
| 1049 | }; |
| 1050 | |
| 1051 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
| 1052 | &sys_reipl_ccw_device_attr.attr, |
| 1053 | &sys_reipl_ccw_loadparm_attr.attr, |
| 1054 | &sys_reipl_ccw_clear_attr.attr, |
| 1055 | NULL, |
| 1056 | }; |
| 1057 | |
| 1058 | static struct attribute_group reipl_ccw_attr_group_vm = { |
| 1059 | .name = IPL_CCW_STR, |
| 1060 | .attrs = reipl_ccw_attrs_vm, |
| 1061 | }; |
| 1062 | |
| 1063 | static struct attribute_group reipl_ccw_attr_group_lpar = { |
| 1064 | .name = IPL_CCW_STR, |
| 1065 | .attrs = reipl_ccw_attrs_lpar, |
| 1066 | }; |
| 1067 | |
| 1068 | /* ECKD reipl device attributes */ |
| 1069 | |
| 1070 | static ssize_t reipl_eckd_scpdata_read(struct file *filp, struct kobject *kobj, |
| 1071 | struct bin_attribute *attr, |
| 1072 | char *buf, loff_t off, size_t count) |
| 1073 | { |
| 1074 | size_t size = reipl_block_eckd->eckd.scp_data_len; |
| 1075 | void *scp_data = reipl_block_eckd->eckd.scp_data; |
| 1076 | |
| 1077 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
| 1078 | } |
| 1079 | |
| 1080 | static ssize_t reipl_eckd_scpdata_write(struct file *filp, struct kobject *kobj, |
| 1081 | struct bin_attribute *attr, |
| 1082 | char *buf, loff_t off, size_t count) |
| 1083 | { |
| 1084 | size_t scpdata_len = count; |
| 1085 | size_t padding; |
| 1086 | |
| 1087 | if (off) |
| 1088 | return -EINVAL; |
| 1089 | |
| 1090 | memcpy(reipl_block_eckd->eckd.scp_data, buf, count); |
| 1091 | if (scpdata_len % 8) { |
| 1092 | padding = 8 - (scpdata_len % 8); |
| 1093 | memset(reipl_block_eckd->eckd.scp_data + scpdata_len, |
| 1094 | 0, padding); |
| 1095 | scpdata_len += padding; |
| 1096 | } |
| 1097 | |
| 1098 | reipl_block_eckd->hdr.len = IPL_BP_ECKD_LEN + scpdata_len; |
| 1099 | reipl_block_eckd->eckd.len = IPL_BP0_ECKD_LEN + scpdata_len; |
| 1100 | reipl_block_eckd->eckd.scp_data_len = scpdata_len; |
| 1101 | |
| 1102 | return count; |
| 1103 | } |
| 1104 | |
| 1105 | static struct bin_attribute sys_reipl_eckd_scp_data_attr = |
| 1106 | __BIN_ATTR(scp_data, 0644, reipl_eckd_scpdata_read, |
| 1107 | reipl_eckd_scpdata_write, DIAG308_SCPDATA_SIZE); |
| 1108 | |
| 1109 | static struct bin_attribute *reipl_eckd_bin_attrs[] = { |
| 1110 | &sys_reipl_eckd_scp_data_attr, |
| 1111 | NULL, |
| 1112 | }; |
| 1113 | |
| 1114 | DEFINE_IPL_CCW_ATTR_RW(reipl_eckd, device, reipl_block_eckd->eckd); |
| 1115 | DEFINE_IPL_ATTR_RW(reipl_eckd, bootprog, "%lld\n", "%lld\n", |
| 1116 | reipl_block_eckd->eckd.bootprog); |
| 1117 | |
| 1118 | static struct attribute *reipl_eckd_attrs[] = { |
| 1119 | &sys_reipl_eckd_device_attr.attr, |
| 1120 | &sys_reipl_eckd_bootprog_attr.attr, |
| 1121 | &sys_reipl_eckd_br_chr_attr.attr, |
| 1122 | &sys_reipl_eckd_loadparm_attr.attr, |
| 1123 | NULL, |
| 1124 | }; |
| 1125 | |
| 1126 | static struct attribute_group reipl_eckd_attr_group = { |
| 1127 | .attrs = reipl_eckd_attrs, |
| 1128 | .bin_attrs = reipl_eckd_bin_attrs |
| 1129 | }; |
| 1130 | |
| 1131 | static ssize_t reipl_eckd_clear_show(struct kobject *kobj, |
| 1132 | struct kobj_attribute *attr, char *page) |
| 1133 | { |
| 1134 | return sprintf(page, "%u\n", reipl_eckd_clear); |
| 1135 | } |
| 1136 | |
| 1137 | static ssize_t reipl_eckd_clear_store(struct kobject *kobj, |
| 1138 | struct kobj_attribute *attr, |
| 1139 | const char *buf, size_t len) |
| 1140 | { |
| 1141 | if (kstrtobool(buf, &reipl_eckd_clear) < 0) |
| 1142 | return -EINVAL; |
| 1143 | return len; |
| 1144 | } |
| 1145 | |
| 1146 | static struct kobj_attribute sys_reipl_eckd_clear_attr = |
| 1147 | __ATTR(clear, 0644, reipl_eckd_clear_show, reipl_eckd_clear_store); |
| 1148 | |
| 1149 | /* NSS reipl device attributes */ |
| 1150 | static void reipl_get_ascii_nss_name(char *dst, |
| 1151 | struct ipl_parameter_block *ipb) |
| 1152 | { |
| 1153 | memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE); |
| 1154 | EBCASC(dst, NSS_NAME_SIZE); |
| 1155 | dst[NSS_NAME_SIZE] = 0; |
| 1156 | } |
| 1157 | |
| 1158 | static ssize_t reipl_nss_name_show(struct kobject *kobj, |
| 1159 | struct kobj_attribute *attr, char *page) |
| 1160 | { |
| 1161 | char nss_name[NSS_NAME_SIZE + 1] = {}; |
| 1162 | |
| 1163 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); |
| 1164 | return sprintf(page, "%s\n", nss_name); |
| 1165 | } |
| 1166 | |
| 1167 | static ssize_t reipl_nss_name_store(struct kobject *kobj, |
| 1168 | struct kobj_attribute *attr, |
| 1169 | const char *buf, size_t len) |
| 1170 | { |
| 1171 | int nss_len; |
| 1172 | |
| 1173 | /* ignore trailing newline */ |
| 1174 | nss_len = len; |
| 1175 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 1176 | nss_len--; |
| 1177 | |
| 1178 | if (nss_len > NSS_NAME_SIZE) |
| 1179 | return -EINVAL; |
| 1180 | |
| 1181 | memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE); |
| 1182 | if (nss_len > 0) { |
| 1183 | reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS; |
| 1184 | memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len); |
| 1185 | ASCEBC(reipl_block_nss->ccw.nss_name, nss_len); |
| 1186 | EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len); |
| 1187 | } else { |
| 1188 | reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS; |
| 1189 | } |
| 1190 | |
| 1191 | return len; |
| 1192 | } |
| 1193 | |
| 1194 | static struct kobj_attribute sys_reipl_nss_name_attr = |
| 1195 | __ATTR(name, 0644, reipl_nss_name_show, |
| 1196 | reipl_nss_name_store); |
| 1197 | |
| 1198 | static struct attribute *reipl_nss_attrs[] = { |
| 1199 | &sys_reipl_nss_name_attr.attr, |
| 1200 | &sys_reipl_nss_loadparm_attr.attr, |
| 1201 | &sys_reipl_nss_vmparm_attr.attr, |
| 1202 | NULL, |
| 1203 | }; |
| 1204 | |
| 1205 | static struct attribute_group reipl_nss_attr_group = { |
| 1206 | .name = IPL_NSS_STR, |
| 1207 | .attrs = reipl_nss_attrs, |
| 1208 | }; |
| 1209 | |
| 1210 | void set_os_info_reipl_block(void) |
| 1211 | { |
| 1212 | os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, |
| 1213 | reipl_block_actual->hdr.len); |
| 1214 | } |
| 1215 | |
| 1216 | /* reipl type */ |
| 1217 | |
| 1218 | static int reipl_set_type(enum ipl_type type) |
| 1219 | { |
| 1220 | if (!(reipl_capabilities & type)) |
| 1221 | return -EINVAL; |
| 1222 | |
| 1223 | switch(type) { |
| 1224 | case IPL_TYPE_CCW: |
| 1225 | reipl_block_actual = reipl_block_ccw; |
| 1226 | break; |
| 1227 | case IPL_TYPE_ECKD: |
| 1228 | reipl_block_actual = reipl_block_eckd; |
| 1229 | break; |
| 1230 | case IPL_TYPE_FCP: |
| 1231 | reipl_block_actual = reipl_block_fcp; |
| 1232 | break; |
| 1233 | case IPL_TYPE_NVME: |
| 1234 | reipl_block_actual = reipl_block_nvme; |
| 1235 | break; |
| 1236 | case IPL_TYPE_NSS: |
| 1237 | reipl_block_actual = reipl_block_nss; |
| 1238 | break; |
| 1239 | default: |
| 1240 | break; |
| 1241 | } |
| 1242 | reipl_type = type; |
| 1243 | return 0; |
| 1244 | } |
| 1245 | |
| 1246 | static ssize_t reipl_type_show(struct kobject *kobj, |
| 1247 | struct kobj_attribute *attr, char *page) |
| 1248 | { |
| 1249 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); |
| 1250 | } |
| 1251 | |
| 1252 | static ssize_t reipl_type_store(struct kobject *kobj, |
| 1253 | struct kobj_attribute *attr, |
| 1254 | const char *buf, size_t len) |
| 1255 | { |
| 1256 | int rc = -EINVAL; |
| 1257 | |
| 1258 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) |
| 1259 | rc = reipl_set_type(IPL_TYPE_CCW); |
| 1260 | else if (strncmp(buf, IPL_ECKD_STR, strlen(IPL_ECKD_STR)) == 0) |
| 1261 | rc = reipl_set_type(IPL_TYPE_ECKD); |
| 1262 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) |
| 1263 | rc = reipl_set_type(IPL_TYPE_FCP); |
| 1264 | else if (strncmp(buf, IPL_NVME_STR, strlen(IPL_NVME_STR)) == 0) |
| 1265 | rc = reipl_set_type(IPL_TYPE_NVME); |
| 1266 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
| 1267 | rc = reipl_set_type(IPL_TYPE_NSS); |
| 1268 | return (rc != 0) ? rc : len; |
| 1269 | } |
| 1270 | |
| 1271 | static struct kobj_attribute reipl_type_attr = |
| 1272 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
| 1273 | |
| 1274 | static struct kset *reipl_kset; |
| 1275 | static struct kset *reipl_fcp_kset; |
| 1276 | static struct kset *reipl_nvme_kset; |
| 1277 | static struct kset *reipl_eckd_kset; |
| 1278 | |
| 1279 | static void __reipl_run(void *unused) |
| 1280 | { |
| 1281 | switch (reipl_type) { |
| 1282 | case IPL_TYPE_CCW: |
| 1283 | diag308(DIAG308_SET, reipl_block_ccw); |
| 1284 | if (reipl_ccw_clear) |
| 1285 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1286 | else |
| 1287 | diag308(DIAG308_LOAD_NORMAL_DUMP, NULL); |
| 1288 | break; |
| 1289 | case IPL_TYPE_ECKD: |
| 1290 | diag308(DIAG308_SET, reipl_block_eckd); |
| 1291 | if (reipl_eckd_clear) |
| 1292 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1293 | else |
| 1294 | diag308(DIAG308_LOAD_NORMAL, NULL); |
| 1295 | break; |
| 1296 | case IPL_TYPE_FCP: |
| 1297 | diag308(DIAG308_SET, reipl_block_fcp); |
| 1298 | if (reipl_fcp_clear) |
| 1299 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1300 | else |
| 1301 | diag308(DIAG308_LOAD_NORMAL, NULL); |
| 1302 | break; |
| 1303 | case IPL_TYPE_NVME: |
| 1304 | diag308(DIAG308_SET, reipl_block_nvme); |
| 1305 | if (reipl_nvme_clear) |
| 1306 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1307 | else |
| 1308 | diag308(DIAG308_LOAD_NORMAL, NULL); |
| 1309 | break; |
| 1310 | case IPL_TYPE_NSS: |
| 1311 | diag308(DIAG308_SET, reipl_block_nss); |
| 1312 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1313 | break; |
| 1314 | case IPL_TYPE_UNKNOWN: |
| 1315 | diag308(DIAG308_LOAD_CLEAR, NULL); |
| 1316 | break; |
| 1317 | case IPL_TYPE_FCP_DUMP: |
| 1318 | case IPL_TYPE_NVME_DUMP: |
| 1319 | case IPL_TYPE_ECKD_DUMP: |
| 1320 | break; |
| 1321 | } |
| 1322 | disabled_wait(); |
| 1323 | } |
| 1324 | |
| 1325 | static void reipl_run(struct shutdown_trigger *trigger) |
| 1326 | { |
| 1327 | smp_call_ipl_cpu(__reipl_run, NULL); |
| 1328 | } |
| 1329 | |
| 1330 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
| 1331 | { |
| 1332 | ipb->hdr.len = IPL_BP_CCW_LEN; |
| 1333 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1334 | ipb->pb0_hdr.len = IPL_BP0_CCW_LEN; |
| 1335 | ipb->pb0_hdr.pbt = IPL_PBT_CCW; |
| 1336 | } |
| 1337 | |
| 1338 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
| 1339 | { |
| 1340 | /* LOADPARM */ |
| 1341 | /* check if read scp info worked and set loadparm */ |
| 1342 | if (sclp_ipl_info.is_valid) |
| 1343 | memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
| 1344 | else |
| 1345 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ |
| 1346 | memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN); |
| 1347 | ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM; |
| 1348 | |
| 1349 | /* VM PARM */ |
| 1350 | if (MACHINE_IS_VM && ipl_block_valid && |
| 1351 | (ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) { |
| 1352 | |
| 1353 | ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; |
| 1354 | ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len; |
| 1355 | memcpy(ipb->ccw.vm_parm, |
| 1356 | ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE); |
| 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | static int __init reipl_nss_init(void) |
| 1361 | { |
| 1362 | int rc; |
| 1363 | |
| 1364 | if (!MACHINE_IS_VM) |
| 1365 | return 0; |
| 1366 | |
| 1367 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); |
| 1368 | if (!reipl_block_nss) |
| 1369 | return -ENOMEM; |
| 1370 | |
| 1371 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
| 1372 | if (rc) |
| 1373 | return rc; |
| 1374 | |
| 1375 | reipl_block_ccw_init(reipl_block_nss); |
| 1376 | reipl_capabilities |= IPL_TYPE_NSS; |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | static int __init reipl_ccw_init(void) |
| 1381 | { |
| 1382 | int rc; |
| 1383 | |
| 1384 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
| 1385 | if (!reipl_block_ccw) |
| 1386 | return -ENOMEM; |
| 1387 | |
| 1388 | rc = sysfs_create_group(&reipl_kset->kobj, |
| 1389 | MACHINE_IS_VM ? &reipl_ccw_attr_group_vm |
| 1390 | : &reipl_ccw_attr_group_lpar); |
| 1391 | if (rc) |
| 1392 | return rc; |
| 1393 | |
| 1394 | reipl_block_ccw_init(reipl_block_ccw); |
| 1395 | if (ipl_info.type == IPL_TYPE_CCW) { |
| 1396 | reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid; |
| 1397 | reipl_block_ccw->ccw.devno = ipl_block.ccw.devno; |
| 1398 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
| 1399 | } |
| 1400 | |
| 1401 | reipl_capabilities |= IPL_TYPE_CCW; |
| 1402 | return 0; |
| 1403 | } |
| 1404 | |
| 1405 | static int __init reipl_fcp_init(void) |
| 1406 | { |
| 1407 | int rc; |
| 1408 | |
| 1409 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
| 1410 | if (!reipl_block_fcp) |
| 1411 | return -ENOMEM; |
| 1412 | |
| 1413 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ |
| 1414 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, |
| 1415 | &reipl_kset->kobj); |
| 1416 | if (!reipl_fcp_kset) { |
| 1417 | free_page((unsigned long) reipl_block_fcp); |
| 1418 | return -ENOMEM; |
| 1419 | } |
| 1420 | |
| 1421 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); |
| 1422 | if (rc) |
| 1423 | goto out1; |
| 1424 | |
| 1425 | if (test_facility(141)) { |
| 1426 | rc = sysfs_create_file(&reipl_fcp_kset->kobj, |
| 1427 | &sys_reipl_fcp_clear_attr.attr); |
| 1428 | if (rc) |
| 1429 | goto out2; |
| 1430 | } else { |
| 1431 | reipl_fcp_clear = true; |
| 1432 | } |
| 1433 | |
| 1434 | if (ipl_info.type == IPL_TYPE_FCP) { |
| 1435 | memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block)); |
| 1436 | /* |
| 1437 | * Fix loadparm: There are systems where the (SCSI) LOADPARM |
| 1438 | * is invalid in the SCSI IPL parameter block, so take it |
| 1439 | * always from sclp_ipl_info. |
| 1440 | */ |
| 1441 | memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm, |
| 1442 | LOADPARM_LEN); |
| 1443 | } else { |
| 1444 | reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN; |
| 1445 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1446 | reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN; |
| 1447 | reipl_block_fcp->fcp.pbt = IPL_PBT_FCP; |
| 1448 | reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL; |
| 1449 | } |
| 1450 | reipl_capabilities |= IPL_TYPE_FCP; |
| 1451 | return 0; |
| 1452 | |
| 1453 | out2: |
| 1454 | sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); |
| 1455 | out1: |
| 1456 | kset_unregister(reipl_fcp_kset); |
| 1457 | free_page((unsigned long) reipl_block_fcp); |
| 1458 | return rc; |
| 1459 | } |
| 1460 | |
| 1461 | static int __init reipl_nvme_init(void) |
| 1462 | { |
| 1463 | int rc; |
| 1464 | |
| 1465 | reipl_block_nvme = (void *) get_zeroed_page(GFP_KERNEL); |
| 1466 | if (!reipl_block_nvme) |
| 1467 | return -ENOMEM; |
| 1468 | |
| 1469 | /* sysfs: create kset for mixing attr group and bin attrs */ |
| 1470 | reipl_nvme_kset = kset_create_and_add(IPL_NVME_STR, NULL, |
| 1471 | &reipl_kset->kobj); |
| 1472 | if (!reipl_nvme_kset) { |
| 1473 | free_page((unsigned long) reipl_block_nvme); |
| 1474 | return -ENOMEM; |
| 1475 | } |
| 1476 | |
| 1477 | rc = sysfs_create_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group); |
| 1478 | if (rc) |
| 1479 | goto out1; |
| 1480 | |
| 1481 | if (test_facility(141)) { |
| 1482 | rc = sysfs_create_file(&reipl_nvme_kset->kobj, |
| 1483 | &sys_reipl_nvme_clear_attr.attr); |
| 1484 | if (rc) |
| 1485 | goto out2; |
| 1486 | } else { |
| 1487 | reipl_nvme_clear = true; |
| 1488 | } |
| 1489 | |
| 1490 | if (ipl_info.type == IPL_TYPE_NVME) { |
| 1491 | memcpy(reipl_block_nvme, &ipl_block, sizeof(ipl_block)); |
| 1492 | /* |
| 1493 | * Fix loadparm: There are systems where the (SCSI) LOADPARM |
| 1494 | * is invalid in the IPL parameter block, so take it |
| 1495 | * always from sclp_ipl_info. |
| 1496 | */ |
| 1497 | memcpy(reipl_block_nvme->nvme.loadparm, sclp_ipl_info.loadparm, |
| 1498 | LOADPARM_LEN); |
| 1499 | } else { |
| 1500 | reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN; |
| 1501 | reipl_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1502 | reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN; |
| 1503 | reipl_block_nvme->nvme.pbt = IPL_PBT_NVME; |
| 1504 | reipl_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_IPL; |
| 1505 | } |
| 1506 | reipl_capabilities |= IPL_TYPE_NVME; |
| 1507 | return 0; |
| 1508 | |
| 1509 | out2: |
| 1510 | sysfs_remove_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group); |
| 1511 | out1: |
| 1512 | kset_unregister(reipl_nvme_kset); |
| 1513 | free_page((unsigned long) reipl_block_nvme); |
| 1514 | return rc; |
| 1515 | } |
| 1516 | |
| 1517 | static int __init reipl_eckd_init(void) |
| 1518 | { |
| 1519 | int rc; |
| 1520 | |
| 1521 | if (!sclp.has_sipl_eckd) |
| 1522 | return 0; |
| 1523 | |
| 1524 | reipl_block_eckd = (void *)get_zeroed_page(GFP_KERNEL); |
| 1525 | if (!reipl_block_eckd) |
| 1526 | return -ENOMEM; |
| 1527 | |
| 1528 | /* sysfs: create kset for mixing attr group and bin attrs */ |
| 1529 | reipl_eckd_kset = kset_create_and_add(IPL_ECKD_STR, NULL, |
| 1530 | &reipl_kset->kobj); |
| 1531 | if (!reipl_eckd_kset) { |
| 1532 | free_page((unsigned long)reipl_block_eckd); |
| 1533 | return -ENOMEM; |
| 1534 | } |
| 1535 | |
| 1536 | rc = sysfs_create_group(&reipl_eckd_kset->kobj, &reipl_eckd_attr_group); |
| 1537 | if (rc) |
| 1538 | goto out1; |
| 1539 | |
| 1540 | if (test_facility(141)) { |
| 1541 | rc = sysfs_create_file(&reipl_eckd_kset->kobj, |
| 1542 | &sys_reipl_eckd_clear_attr.attr); |
| 1543 | if (rc) |
| 1544 | goto out2; |
| 1545 | } else { |
| 1546 | reipl_eckd_clear = true; |
| 1547 | } |
| 1548 | |
| 1549 | if (ipl_info.type == IPL_TYPE_ECKD) { |
| 1550 | memcpy(reipl_block_eckd, &ipl_block, sizeof(ipl_block)); |
| 1551 | } else { |
| 1552 | reipl_block_eckd->hdr.len = IPL_BP_ECKD_LEN; |
| 1553 | reipl_block_eckd->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1554 | reipl_block_eckd->eckd.len = IPL_BP0_ECKD_LEN; |
| 1555 | reipl_block_eckd->eckd.pbt = IPL_PBT_ECKD; |
| 1556 | reipl_block_eckd->eckd.opt = IPL_PB0_ECKD_OPT_IPL; |
| 1557 | } |
| 1558 | reipl_capabilities |= IPL_TYPE_ECKD; |
| 1559 | return 0; |
| 1560 | |
| 1561 | out2: |
| 1562 | sysfs_remove_group(&reipl_eckd_kset->kobj, &reipl_eckd_attr_group); |
| 1563 | out1: |
| 1564 | kset_unregister(reipl_eckd_kset); |
| 1565 | free_page((unsigned long)reipl_block_eckd); |
| 1566 | return rc; |
| 1567 | } |
| 1568 | |
| 1569 | static int __init reipl_type_init(void) |
| 1570 | { |
| 1571 | enum ipl_type reipl_type = ipl_info.type; |
| 1572 | struct ipl_parameter_block *reipl_block; |
| 1573 | unsigned long size; |
| 1574 | |
| 1575 | reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); |
| 1576 | if (!reipl_block) |
| 1577 | goto out; |
| 1578 | /* |
| 1579 | * If we have an OS info reipl block, this will be used |
| 1580 | */ |
| 1581 | if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) { |
| 1582 | memcpy(reipl_block_fcp, reipl_block, size); |
| 1583 | reipl_type = IPL_TYPE_FCP; |
| 1584 | } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_NVME) { |
| 1585 | memcpy(reipl_block_nvme, reipl_block, size); |
| 1586 | reipl_type = IPL_TYPE_NVME; |
| 1587 | } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) { |
| 1588 | memcpy(reipl_block_ccw, reipl_block, size); |
| 1589 | reipl_type = IPL_TYPE_CCW; |
| 1590 | } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_ECKD) { |
| 1591 | memcpy(reipl_block_eckd, reipl_block, size); |
| 1592 | reipl_type = IPL_TYPE_ECKD; |
| 1593 | } |
| 1594 | out: |
| 1595 | return reipl_set_type(reipl_type); |
| 1596 | } |
| 1597 | |
| 1598 | static int __init reipl_init(void) |
| 1599 | { |
| 1600 | int rc; |
| 1601 | |
| 1602 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
| 1603 | if (!reipl_kset) |
| 1604 | return -ENOMEM; |
| 1605 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); |
| 1606 | if (rc) { |
| 1607 | kset_unregister(reipl_kset); |
| 1608 | return rc; |
| 1609 | } |
| 1610 | rc = reipl_ccw_init(); |
| 1611 | if (rc) |
| 1612 | return rc; |
| 1613 | rc = reipl_eckd_init(); |
| 1614 | if (rc) |
| 1615 | return rc; |
| 1616 | rc = reipl_fcp_init(); |
| 1617 | if (rc) |
| 1618 | return rc; |
| 1619 | rc = reipl_nvme_init(); |
| 1620 | if (rc) |
| 1621 | return rc; |
| 1622 | rc = reipl_nss_init(); |
| 1623 | if (rc) |
| 1624 | return rc; |
| 1625 | return reipl_type_init(); |
| 1626 | } |
| 1627 | |
| 1628 | static struct shutdown_action __refdata reipl_action = { |
| 1629 | .name = SHUTDOWN_ACTION_REIPL_STR, |
| 1630 | .fn = reipl_run, |
| 1631 | .init = reipl_init, |
| 1632 | }; |
| 1633 | |
| 1634 | /* |
| 1635 | * dump shutdown action: Dump Linux on shutdown. |
| 1636 | */ |
| 1637 | |
| 1638 | /* FCP dump device attributes */ |
| 1639 | |
| 1640 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", |
| 1641 | dump_block_fcp->fcp.wwpn); |
| 1642 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", |
| 1643 | dump_block_fcp->fcp.lun); |
| 1644 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", |
| 1645 | dump_block_fcp->fcp.bootprog); |
| 1646 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", |
| 1647 | dump_block_fcp->fcp.br_lba); |
| 1648 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 1649 | dump_block_fcp->fcp.devno); |
| 1650 | |
| 1651 | static struct attribute *dump_fcp_attrs[] = { |
| 1652 | &sys_dump_fcp_device_attr.attr, |
| 1653 | &sys_dump_fcp_wwpn_attr.attr, |
| 1654 | &sys_dump_fcp_lun_attr.attr, |
| 1655 | &sys_dump_fcp_bootprog_attr.attr, |
| 1656 | &sys_dump_fcp_br_lba_attr.attr, |
| 1657 | NULL, |
| 1658 | }; |
| 1659 | |
| 1660 | static struct attribute_group dump_fcp_attr_group = { |
| 1661 | .name = IPL_FCP_STR, |
| 1662 | .attrs = dump_fcp_attrs, |
| 1663 | }; |
| 1664 | |
| 1665 | /* NVME dump device attributes */ |
| 1666 | DEFINE_IPL_ATTR_RW(dump_nvme, fid, "0x%08llx\n", "%llx\n", |
| 1667 | dump_block_nvme->nvme.fid); |
| 1668 | DEFINE_IPL_ATTR_RW(dump_nvme, nsid, "0x%08llx\n", "%llx\n", |
| 1669 | dump_block_nvme->nvme.nsid); |
| 1670 | DEFINE_IPL_ATTR_RW(dump_nvme, bootprog, "%lld\n", "%llx\n", |
| 1671 | dump_block_nvme->nvme.bootprog); |
| 1672 | DEFINE_IPL_ATTR_RW(dump_nvme, br_lba, "%lld\n", "%llx\n", |
| 1673 | dump_block_nvme->nvme.br_lba); |
| 1674 | |
| 1675 | static struct attribute *dump_nvme_attrs[] = { |
| 1676 | &sys_dump_nvme_fid_attr.attr, |
| 1677 | &sys_dump_nvme_nsid_attr.attr, |
| 1678 | &sys_dump_nvme_bootprog_attr.attr, |
| 1679 | &sys_dump_nvme_br_lba_attr.attr, |
| 1680 | NULL, |
| 1681 | }; |
| 1682 | |
| 1683 | static struct attribute_group dump_nvme_attr_group = { |
| 1684 | .name = IPL_NVME_STR, |
| 1685 | .attrs = dump_nvme_attrs, |
| 1686 | }; |
| 1687 | |
| 1688 | /* ECKD dump device attributes */ |
| 1689 | DEFINE_IPL_CCW_ATTR_RW(dump_eckd, device, dump_block_eckd->eckd); |
| 1690 | DEFINE_IPL_ATTR_RW(dump_eckd, bootprog, "%lld\n", "%llx\n", |
| 1691 | dump_block_eckd->eckd.bootprog); |
| 1692 | |
| 1693 | IPL_ATTR_BR_CHR_SHOW_FN(dump, dump_block_eckd->eckd); |
| 1694 | IPL_ATTR_BR_CHR_STORE_FN(dump, dump_block_eckd->eckd); |
| 1695 | |
| 1696 | static struct kobj_attribute sys_dump_eckd_br_chr_attr = |
| 1697 | __ATTR(br_chr, 0644, eckd_dump_br_chr_show, eckd_dump_br_chr_store); |
| 1698 | |
| 1699 | static struct attribute *dump_eckd_attrs[] = { |
| 1700 | &sys_dump_eckd_device_attr.attr, |
| 1701 | &sys_dump_eckd_bootprog_attr.attr, |
| 1702 | &sys_dump_eckd_br_chr_attr.attr, |
| 1703 | NULL, |
| 1704 | }; |
| 1705 | |
| 1706 | static struct attribute_group dump_eckd_attr_group = { |
| 1707 | .name = IPL_ECKD_STR, |
| 1708 | .attrs = dump_eckd_attrs, |
| 1709 | }; |
| 1710 | |
| 1711 | /* CCW dump device attributes */ |
| 1712 | DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw); |
| 1713 | |
| 1714 | static struct attribute *dump_ccw_attrs[] = { |
| 1715 | &sys_dump_ccw_device_attr.attr, |
| 1716 | NULL, |
| 1717 | }; |
| 1718 | |
| 1719 | static struct attribute_group dump_ccw_attr_group = { |
| 1720 | .name = IPL_CCW_STR, |
| 1721 | .attrs = dump_ccw_attrs, |
| 1722 | }; |
| 1723 | |
| 1724 | /* dump type */ |
| 1725 | |
| 1726 | static int dump_set_type(enum dump_type type) |
| 1727 | { |
| 1728 | if (!(dump_capabilities & type)) |
| 1729 | return -EINVAL; |
| 1730 | dump_type = type; |
| 1731 | return 0; |
| 1732 | } |
| 1733 | |
| 1734 | static ssize_t dump_type_show(struct kobject *kobj, |
| 1735 | struct kobj_attribute *attr, char *page) |
| 1736 | { |
| 1737 | return sprintf(page, "%s\n", dump_type_str(dump_type)); |
| 1738 | } |
| 1739 | |
| 1740 | static ssize_t dump_type_store(struct kobject *kobj, |
| 1741 | struct kobj_attribute *attr, |
| 1742 | const char *buf, size_t len) |
| 1743 | { |
| 1744 | int rc = -EINVAL; |
| 1745 | |
| 1746 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) |
| 1747 | rc = dump_set_type(DUMP_TYPE_NONE); |
| 1748 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) |
| 1749 | rc = dump_set_type(DUMP_TYPE_CCW); |
| 1750 | else if (strncmp(buf, DUMP_ECKD_STR, strlen(DUMP_ECKD_STR)) == 0) |
| 1751 | rc = dump_set_type(DUMP_TYPE_ECKD); |
| 1752 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) |
| 1753 | rc = dump_set_type(DUMP_TYPE_FCP); |
| 1754 | else if (strncmp(buf, DUMP_NVME_STR, strlen(DUMP_NVME_STR)) == 0) |
| 1755 | rc = dump_set_type(DUMP_TYPE_NVME); |
| 1756 | return (rc != 0) ? rc : len; |
| 1757 | } |
| 1758 | |
| 1759 | static struct kobj_attribute dump_type_attr = |
| 1760 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); |
| 1761 | |
| 1762 | static struct kset *dump_kset; |
| 1763 | |
| 1764 | static void diag308_dump(void *dump_block) |
| 1765 | { |
| 1766 | diag308(DIAG308_SET, dump_block); |
| 1767 | while (1) { |
| 1768 | if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302) |
| 1769 | break; |
| 1770 | udelay(USEC_PER_SEC); |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | static void __dump_run(void *unused) |
| 1775 | { |
| 1776 | switch (dump_type) { |
| 1777 | case DUMP_TYPE_CCW: |
| 1778 | diag308_dump(dump_block_ccw); |
| 1779 | break; |
| 1780 | case DUMP_TYPE_ECKD: |
| 1781 | diag308_dump(dump_block_eckd); |
| 1782 | break; |
| 1783 | case DUMP_TYPE_FCP: |
| 1784 | diag308_dump(dump_block_fcp); |
| 1785 | break; |
| 1786 | case DUMP_TYPE_NVME: |
| 1787 | diag308_dump(dump_block_nvme); |
| 1788 | break; |
| 1789 | default: |
| 1790 | break; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | static void dump_run(struct shutdown_trigger *trigger) |
| 1795 | { |
| 1796 | if (dump_type == DUMP_TYPE_NONE) |
| 1797 | return; |
| 1798 | smp_send_stop(); |
| 1799 | smp_call_ipl_cpu(__dump_run, NULL); |
| 1800 | } |
| 1801 | |
| 1802 | static int __init dump_ccw_init(void) |
| 1803 | { |
| 1804 | int rc; |
| 1805 | |
| 1806 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
| 1807 | if (!dump_block_ccw) |
| 1808 | return -ENOMEM; |
| 1809 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
| 1810 | if (rc) { |
| 1811 | free_page((unsigned long)dump_block_ccw); |
| 1812 | return rc; |
| 1813 | } |
| 1814 | dump_block_ccw->hdr.len = IPL_BP_CCW_LEN; |
| 1815 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1816 | dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN; |
| 1817 | dump_block_ccw->ccw.pbt = IPL_PBT_CCW; |
| 1818 | dump_capabilities |= DUMP_TYPE_CCW; |
| 1819 | return 0; |
| 1820 | } |
| 1821 | |
| 1822 | static int __init dump_fcp_init(void) |
| 1823 | { |
| 1824 | int rc; |
| 1825 | |
| 1826 | if (!sclp_ipl_info.has_dump) |
| 1827 | return 0; /* LDIPL DUMP is not installed */ |
| 1828 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
| 1829 | if (!dump_block_fcp) |
| 1830 | return -ENOMEM; |
| 1831 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
| 1832 | if (rc) { |
| 1833 | free_page((unsigned long)dump_block_fcp); |
| 1834 | return rc; |
| 1835 | } |
| 1836 | dump_block_fcp->hdr.len = IPL_BP_FCP_LEN; |
| 1837 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1838 | dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN; |
| 1839 | dump_block_fcp->fcp.pbt = IPL_PBT_FCP; |
| 1840 | dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP; |
| 1841 | dump_capabilities |= DUMP_TYPE_FCP; |
| 1842 | return 0; |
| 1843 | } |
| 1844 | |
| 1845 | static int __init dump_nvme_init(void) |
| 1846 | { |
| 1847 | int rc; |
| 1848 | |
| 1849 | if (!sclp_ipl_info.has_dump) |
| 1850 | return 0; /* LDIPL DUMP is not installed */ |
| 1851 | dump_block_nvme = (void *) get_zeroed_page(GFP_KERNEL); |
| 1852 | if (!dump_block_nvme) |
| 1853 | return -ENOMEM; |
| 1854 | rc = sysfs_create_group(&dump_kset->kobj, &dump_nvme_attr_group); |
| 1855 | if (rc) { |
| 1856 | free_page((unsigned long)dump_block_nvme); |
| 1857 | return rc; |
| 1858 | } |
| 1859 | dump_block_nvme->hdr.len = IPL_BP_NVME_LEN; |
| 1860 | dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1861 | dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN; |
| 1862 | dump_block_nvme->fcp.pbt = IPL_PBT_NVME; |
| 1863 | dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP; |
| 1864 | dump_capabilities |= DUMP_TYPE_NVME; |
| 1865 | return 0; |
| 1866 | } |
| 1867 | |
| 1868 | static int __init dump_eckd_init(void) |
| 1869 | { |
| 1870 | int rc; |
| 1871 | |
| 1872 | if (!sclp_ipl_info.has_dump || !sclp.has_sipl_eckd) |
| 1873 | return 0; /* LDIPL DUMP is not installed */ |
| 1874 | dump_block_eckd = (void *)get_zeroed_page(GFP_KERNEL); |
| 1875 | if (!dump_block_eckd) |
| 1876 | return -ENOMEM; |
| 1877 | rc = sysfs_create_group(&dump_kset->kobj, &dump_eckd_attr_group); |
| 1878 | if (rc) { |
| 1879 | free_page((unsigned long)dump_block_eckd); |
| 1880 | return rc; |
| 1881 | } |
| 1882 | dump_block_eckd->hdr.len = IPL_BP_ECKD_LEN; |
| 1883 | dump_block_eckd->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 1884 | dump_block_eckd->eckd.len = IPL_BP0_ECKD_LEN; |
| 1885 | dump_block_eckd->eckd.pbt = IPL_PBT_ECKD; |
| 1886 | dump_block_eckd->eckd.opt = IPL_PB0_ECKD_OPT_DUMP; |
| 1887 | dump_capabilities |= DUMP_TYPE_ECKD; |
| 1888 | return 0; |
| 1889 | } |
| 1890 | |
| 1891 | static int __init dump_init(void) |
| 1892 | { |
| 1893 | int rc; |
| 1894 | |
| 1895 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
| 1896 | if (!dump_kset) |
| 1897 | return -ENOMEM; |
| 1898 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
| 1899 | if (rc) { |
| 1900 | kset_unregister(dump_kset); |
| 1901 | return rc; |
| 1902 | } |
| 1903 | rc = dump_ccw_init(); |
| 1904 | if (rc) |
| 1905 | return rc; |
| 1906 | rc = dump_eckd_init(); |
| 1907 | if (rc) |
| 1908 | return rc; |
| 1909 | rc = dump_fcp_init(); |
| 1910 | if (rc) |
| 1911 | return rc; |
| 1912 | rc = dump_nvme_init(); |
| 1913 | if (rc) |
| 1914 | return rc; |
| 1915 | dump_set_type(DUMP_TYPE_NONE); |
| 1916 | return 0; |
| 1917 | } |
| 1918 | |
| 1919 | static struct shutdown_action __refdata dump_action = { |
| 1920 | .name = SHUTDOWN_ACTION_DUMP_STR, |
| 1921 | .fn = dump_run, |
| 1922 | .init = dump_init, |
| 1923 | }; |
| 1924 | |
| 1925 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
| 1926 | { |
| 1927 | struct lowcore *abs_lc; |
| 1928 | unsigned int csum; |
| 1929 | |
| 1930 | /* |
| 1931 | * Set REIPL_CLEAR flag in os_info flags entry indicating |
| 1932 | * 'clear' sysfs attribute has been set on the panicked system |
| 1933 | * for specified reipl type. |
| 1934 | * Always set for IPL_TYPE_NSS and IPL_TYPE_UNKNOWN. |
| 1935 | */ |
| 1936 | if ((reipl_type == IPL_TYPE_CCW && reipl_ccw_clear) || |
| 1937 | (reipl_type == IPL_TYPE_ECKD && reipl_eckd_clear) || |
| 1938 | (reipl_type == IPL_TYPE_FCP && reipl_fcp_clear) || |
| 1939 | (reipl_type == IPL_TYPE_NVME && reipl_nvme_clear) || |
| 1940 | reipl_type == IPL_TYPE_NSS || |
| 1941 | reipl_type == IPL_TYPE_UNKNOWN) |
| 1942 | os_info_flags |= OS_INFO_FLAG_REIPL_CLEAR; |
| 1943 | os_info_entry_add(OS_INFO_FLAGS_ENTRY, &os_info_flags, sizeof(os_info_flags)); |
| 1944 | csum = (__force unsigned int) |
| 1945 | csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); |
| 1946 | abs_lc = get_abs_lowcore(); |
| 1947 | abs_lc->ipib = __pa(reipl_block_actual); |
| 1948 | abs_lc->ipib_checksum = csum; |
| 1949 | put_abs_lowcore(abs_lc); |
| 1950 | dump_run(trigger); |
| 1951 | } |
| 1952 | |
| 1953 | static struct shutdown_action __refdata dump_reipl_action = { |
| 1954 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, |
| 1955 | .fn = dump_reipl_run, |
| 1956 | }; |
| 1957 | |
| 1958 | /* |
| 1959 | * vmcmd shutdown action: Trigger vm command on shutdown. |
| 1960 | */ |
| 1961 | |
| 1962 | static char vmcmd_on_reboot[128]; |
| 1963 | static char vmcmd_on_panic[128]; |
| 1964 | static char vmcmd_on_halt[128]; |
| 1965 | static char vmcmd_on_poff[128]; |
| 1966 | static char vmcmd_on_restart[128]; |
| 1967 | |
| 1968 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); |
| 1969 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); |
| 1970 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); |
| 1971 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); |
| 1972 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
| 1973 | |
| 1974 | static struct attribute *vmcmd_attrs[] = { |
| 1975 | &sys_vmcmd_on_reboot_attr.attr, |
| 1976 | &sys_vmcmd_on_panic_attr.attr, |
| 1977 | &sys_vmcmd_on_halt_attr.attr, |
| 1978 | &sys_vmcmd_on_poff_attr.attr, |
| 1979 | &sys_vmcmd_on_restart_attr.attr, |
| 1980 | NULL, |
| 1981 | }; |
| 1982 | |
| 1983 | static struct attribute_group vmcmd_attr_group = { |
| 1984 | .attrs = vmcmd_attrs, |
| 1985 | }; |
| 1986 | |
| 1987 | static struct kset *vmcmd_kset; |
| 1988 | |
| 1989 | static void vmcmd_run(struct shutdown_trigger *trigger) |
| 1990 | { |
| 1991 | char *cmd; |
| 1992 | |
| 1993 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) |
| 1994 | cmd = vmcmd_on_reboot; |
| 1995 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
| 1996 | cmd = vmcmd_on_panic; |
| 1997 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) |
| 1998 | cmd = vmcmd_on_halt; |
| 1999 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) |
| 2000 | cmd = vmcmd_on_poff; |
| 2001 | else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
| 2002 | cmd = vmcmd_on_restart; |
| 2003 | else |
| 2004 | return; |
| 2005 | |
| 2006 | if (strlen(cmd) == 0) |
| 2007 | return; |
| 2008 | __cpcmd(cmd, NULL, 0, NULL); |
| 2009 | } |
| 2010 | |
| 2011 | static int vmcmd_init(void) |
| 2012 | { |
| 2013 | if (!MACHINE_IS_VM) |
| 2014 | return -EOPNOTSUPP; |
| 2015 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
| 2016 | if (!vmcmd_kset) |
| 2017 | return -ENOMEM; |
| 2018 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); |
| 2019 | } |
| 2020 | |
| 2021 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, |
| 2022 | vmcmd_run, vmcmd_init}; |
| 2023 | |
| 2024 | /* |
| 2025 | * stop shutdown action: Stop Linux on shutdown. |
| 2026 | */ |
| 2027 | |
| 2028 | static void stop_run(struct shutdown_trigger *trigger) |
| 2029 | { |
| 2030 | if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
| 2031 | strcmp(trigger->name, ON_RESTART_STR) == 0) |
| 2032 | disabled_wait(); |
| 2033 | smp_stop_cpu(); |
| 2034 | } |
| 2035 | |
| 2036 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, |
| 2037 | stop_run, NULL}; |
| 2038 | |
| 2039 | /* action list */ |
| 2040 | |
| 2041 | static struct shutdown_action *shutdown_actions_list[] = { |
| 2042 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
| 2043 | &vmcmd_action, &stop_action}; |
| 2044 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
| 2045 | |
| 2046 | /* |
| 2047 | * Trigger section |
| 2048 | */ |
| 2049 | |
| 2050 | static struct kset *shutdown_actions_kset; |
| 2051 | |
| 2052 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, |
| 2053 | size_t len) |
| 2054 | { |
| 2055 | int i; |
| 2056 | |
| 2057 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
| 2058 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
| 2059 | if (shutdown_actions_list[i]->init_rc) { |
| 2060 | return shutdown_actions_list[i]->init_rc; |
| 2061 | } else { |
| 2062 | trigger->action = shutdown_actions_list[i]; |
| 2063 | return len; |
| 2064 | } |
| 2065 | } |
| 2066 | } |
| 2067 | return -EINVAL; |
| 2068 | } |
| 2069 | |
| 2070 | /* on reipl */ |
| 2071 | |
| 2072 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, |
| 2073 | &reipl_action}; |
| 2074 | |
| 2075 | static ssize_t on_reboot_show(struct kobject *kobj, |
| 2076 | struct kobj_attribute *attr, char *page) |
| 2077 | { |
| 2078 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); |
| 2079 | } |
| 2080 | |
| 2081 | static ssize_t on_reboot_store(struct kobject *kobj, |
| 2082 | struct kobj_attribute *attr, |
| 2083 | const char *buf, size_t len) |
| 2084 | { |
| 2085 | return set_trigger(buf, &on_reboot_trigger, len); |
| 2086 | } |
| 2087 | static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot); |
| 2088 | |
| 2089 | static void do_machine_restart(char *__unused) |
| 2090 | { |
| 2091 | smp_send_stop(); |
| 2092 | on_reboot_trigger.action->fn(&on_reboot_trigger); |
| 2093 | reipl_run(NULL); |
| 2094 | } |
| 2095 | void (*_machine_restart)(char *command) = do_machine_restart; |
| 2096 | |
| 2097 | /* on panic */ |
| 2098 | |
| 2099 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; |
| 2100 | |
| 2101 | static ssize_t on_panic_show(struct kobject *kobj, |
| 2102 | struct kobj_attribute *attr, char *page) |
| 2103 | { |
| 2104 | return sprintf(page, "%s\n", on_panic_trigger.action->name); |
| 2105 | } |
| 2106 | |
| 2107 | static ssize_t on_panic_store(struct kobject *kobj, |
| 2108 | struct kobj_attribute *attr, |
| 2109 | const char *buf, size_t len) |
| 2110 | { |
| 2111 | return set_trigger(buf, &on_panic_trigger, len); |
| 2112 | } |
| 2113 | static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic); |
| 2114 | |
| 2115 | static void do_panic(void) |
| 2116 | { |
| 2117 | lgr_info_log(); |
| 2118 | on_panic_trigger.action->fn(&on_panic_trigger); |
| 2119 | stop_run(&on_panic_trigger); |
| 2120 | } |
| 2121 | |
| 2122 | /* on restart */ |
| 2123 | |
| 2124 | static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, |
| 2125 | &stop_action}; |
| 2126 | |
| 2127 | static ssize_t on_restart_show(struct kobject *kobj, |
| 2128 | struct kobj_attribute *attr, char *page) |
| 2129 | { |
| 2130 | return sprintf(page, "%s\n", on_restart_trigger.action->name); |
| 2131 | } |
| 2132 | |
| 2133 | static ssize_t on_restart_store(struct kobject *kobj, |
| 2134 | struct kobj_attribute *attr, |
| 2135 | const char *buf, size_t len) |
| 2136 | { |
| 2137 | return set_trigger(buf, &on_restart_trigger, len); |
| 2138 | } |
| 2139 | static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart); |
| 2140 | |
| 2141 | static void __do_restart(void *ignore) |
| 2142 | { |
| 2143 | smp_send_stop(); |
| 2144 | #ifdef CONFIG_CRASH_DUMP |
| 2145 | crash_kexec(NULL); |
| 2146 | #endif |
| 2147 | on_restart_trigger.action->fn(&on_restart_trigger); |
| 2148 | stop_run(&on_restart_trigger); |
| 2149 | } |
| 2150 | |
| 2151 | void do_restart(void *arg) |
| 2152 | { |
| 2153 | tracing_off(); |
| 2154 | debug_locks_off(); |
| 2155 | lgr_info_log(); |
| 2156 | smp_call_online_cpu(__do_restart, arg); |
| 2157 | } |
| 2158 | |
| 2159 | /* on halt */ |
| 2160 | |
| 2161 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; |
| 2162 | |
| 2163 | static ssize_t on_halt_show(struct kobject *kobj, |
| 2164 | struct kobj_attribute *attr, char *page) |
| 2165 | { |
| 2166 | return sprintf(page, "%s\n", on_halt_trigger.action->name); |
| 2167 | } |
| 2168 | |
| 2169 | static ssize_t on_halt_store(struct kobject *kobj, |
| 2170 | struct kobj_attribute *attr, |
| 2171 | const char *buf, size_t len) |
| 2172 | { |
| 2173 | return set_trigger(buf, &on_halt_trigger, len); |
| 2174 | } |
| 2175 | static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt); |
| 2176 | |
| 2177 | static void do_machine_halt(void) |
| 2178 | { |
| 2179 | smp_send_stop(); |
| 2180 | on_halt_trigger.action->fn(&on_halt_trigger); |
| 2181 | stop_run(&on_halt_trigger); |
| 2182 | } |
| 2183 | void (*_machine_halt)(void) = do_machine_halt; |
| 2184 | |
| 2185 | /* on power off */ |
| 2186 | |
| 2187 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; |
| 2188 | |
| 2189 | static ssize_t on_poff_show(struct kobject *kobj, |
| 2190 | struct kobj_attribute *attr, char *page) |
| 2191 | { |
| 2192 | return sprintf(page, "%s\n", on_poff_trigger.action->name); |
| 2193 | } |
| 2194 | |
| 2195 | static ssize_t on_poff_store(struct kobject *kobj, |
| 2196 | struct kobj_attribute *attr, |
| 2197 | const char *buf, size_t len) |
| 2198 | { |
| 2199 | return set_trigger(buf, &on_poff_trigger, len); |
| 2200 | } |
| 2201 | static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff); |
| 2202 | |
| 2203 | static void do_machine_power_off(void) |
| 2204 | { |
| 2205 | smp_send_stop(); |
| 2206 | on_poff_trigger.action->fn(&on_poff_trigger); |
| 2207 | stop_run(&on_poff_trigger); |
| 2208 | } |
| 2209 | void (*_machine_power_off)(void) = do_machine_power_off; |
| 2210 | |
| 2211 | static struct attribute *shutdown_action_attrs[] = { |
| 2212 | &on_restart_attr.attr, |
| 2213 | &on_reboot_attr.attr, |
| 2214 | &on_panic_attr.attr, |
| 2215 | &on_halt_attr.attr, |
| 2216 | &on_poff_attr.attr, |
| 2217 | NULL, |
| 2218 | }; |
| 2219 | |
| 2220 | static struct attribute_group shutdown_action_attr_group = { |
| 2221 | .attrs = shutdown_action_attrs, |
| 2222 | }; |
| 2223 | |
| 2224 | static void __init shutdown_triggers_init(void) |
| 2225 | { |
| 2226 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
| 2227 | firmware_kobj); |
| 2228 | if (!shutdown_actions_kset) |
| 2229 | goto fail; |
| 2230 | if (sysfs_create_group(&shutdown_actions_kset->kobj, |
| 2231 | &shutdown_action_attr_group)) |
| 2232 | goto fail; |
| 2233 | return; |
| 2234 | fail: |
| 2235 | panic("shutdown_triggers_init failed\n"); |
| 2236 | } |
| 2237 | |
| 2238 | static void __init shutdown_actions_init(void) |
| 2239 | { |
| 2240 | int i; |
| 2241 | |
| 2242 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
| 2243 | if (!shutdown_actions_list[i]->init) |
| 2244 | continue; |
| 2245 | shutdown_actions_list[i]->init_rc = |
| 2246 | shutdown_actions_list[i]->init(); |
| 2247 | } |
| 2248 | } |
| 2249 | |
| 2250 | static int __init s390_ipl_init(void) |
| 2251 | { |
| 2252 | char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40}; |
| 2253 | |
| 2254 | sclp_early_get_ipl_info(&sclp_ipl_info); |
| 2255 | /* |
| 2256 | * Fix loadparm: There are systems where the (SCSI) LOADPARM |
| 2257 | * returned by read SCP info is invalid (contains EBCDIC blanks) |
| 2258 | * when the system has been booted via diag308. In that case we use |
| 2259 | * the value from diag308, if available. |
| 2260 | * |
| 2261 | * There are also systems where diag308 store does not work in |
| 2262 | * case the system is booted from HMC. Fortunately in this case |
| 2263 | * READ SCP info provides the correct value. |
| 2264 | */ |
| 2265 | if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid) |
| 2266 | memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN); |
| 2267 | shutdown_actions_init(); |
| 2268 | shutdown_triggers_init(); |
| 2269 | return 0; |
| 2270 | } |
| 2271 | |
| 2272 | __initcall(s390_ipl_init); |
| 2273 | |
| 2274 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
| 2275 | { |
| 2276 | int sx, dx; |
| 2277 | |
| 2278 | dx = 0; |
| 2279 | for (sx = 0; src[sx] != 0; sx++) { |
| 2280 | if (src[sx] == '"') |
| 2281 | continue; |
| 2282 | dst[dx++] = src[sx]; |
| 2283 | if (dx >= n) |
| 2284 | break; |
| 2285 | } |
| 2286 | } |
| 2287 | |
| 2288 | static int __init vmcmd_on_reboot_setup(char *str) |
| 2289 | { |
| 2290 | if (!MACHINE_IS_VM) |
| 2291 | return 1; |
| 2292 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); |
| 2293 | vmcmd_on_reboot[127] = 0; |
| 2294 | on_reboot_trigger.action = &vmcmd_action; |
| 2295 | return 1; |
| 2296 | } |
| 2297 | __setup("vmreboot=", vmcmd_on_reboot_setup); |
| 2298 | |
| 2299 | static int __init vmcmd_on_panic_setup(char *str) |
| 2300 | { |
| 2301 | if (!MACHINE_IS_VM) |
| 2302 | return 1; |
| 2303 | strncpy_skip_quote(vmcmd_on_panic, str, 127); |
| 2304 | vmcmd_on_panic[127] = 0; |
| 2305 | on_panic_trigger.action = &vmcmd_action; |
| 2306 | return 1; |
| 2307 | } |
| 2308 | __setup("vmpanic=", vmcmd_on_panic_setup); |
| 2309 | |
| 2310 | static int __init vmcmd_on_halt_setup(char *str) |
| 2311 | { |
| 2312 | if (!MACHINE_IS_VM) |
| 2313 | return 1; |
| 2314 | strncpy_skip_quote(vmcmd_on_halt, str, 127); |
| 2315 | vmcmd_on_halt[127] = 0; |
| 2316 | on_halt_trigger.action = &vmcmd_action; |
| 2317 | return 1; |
| 2318 | } |
| 2319 | __setup("vmhalt=", vmcmd_on_halt_setup); |
| 2320 | |
| 2321 | static int __init vmcmd_on_poff_setup(char *str) |
| 2322 | { |
| 2323 | if (!MACHINE_IS_VM) |
| 2324 | return 1; |
| 2325 | strncpy_skip_quote(vmcmd_on_poff, str, 127); |
| 2326 | vmcmd_on_poff[127] = 0; |
| 2327 | on_poff_trigger.action = &vmcmd_action; |
| 2328 | return 1; |
| 2329 | } |
| 2330 | __setup("vmpoff=", vmcmd_on_poff_setup); |
| 2331 | |
| 2332 | static int on_panic_notify(struct notifier_block *self, |
| 2333 | unsigned long event, void *data) |
| 2334 | { |
| 2335 | do_panic(); |
| 2336 | return NOTIFY_OK; |
| 2337 | } |
| 2338 | |
| 2339 | static struct notifier_block on_panic_nb = { |
| 2340 | .notifier_call = on_panic_notify, |
| 2341 | .priority = INT_MIN, |
| 2342 | }; |
| 2343 | |
| 2344 | void __init setup_ipl(void) |
| 2345 | { |
| 2346 | BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE); |
| 2347 | |
| 2348 | ipl_info.type = get_ipl_type(); |
| 2349 | switch (ipl_info.type) { |
| 2350 | case IPL_TYPE_CCW: |
| 2351 | ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid; |
| 2352 | ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno; |
| 2353 | break; |
| 2354 | case IPL_TYPE_ECKD: |
| 2355 | case IPL_TYPE_ECKD_DUMP: |
| 2356 | ipl_info.data.eckd.dev_id.ssid = ipl_block.eckd.ssid; |
| 2357 | ipl_info.data.eckd.dev_id.devno = ipl_block.eckd.devno; |
| 2358 | break; |
| 2359 | case IPL_TYPE_FCP: |
| 2360 | case IPL_TYPE_FCP_DUMP: |
| 2361 | ipl_info.data.fcp.dev_id.ssid = 0; |
| 2362 | ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno; |
| 2363 | ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn; |
| 2364 | ipl_info.data.fcp.lun = ipl_block.fcp.lun; |
| 2365 | break; |
| 2366 | case IPL_TYPE_NVME: |
| 2367 | case IPL_TYPE_NVME_DUMP: |
| 2368 | ipl_info.data.nvme.fid = ipl_block.nvme.fid; |
| 2369 | ipl_info.data.nvme.nsid = ipl_block.nvme.nsid; |
| 2370 | break; |
| 2371 | case IPL_TYPE_NSS: |
| 2372 | case IPL_TYPE_UNKNOWN: |
| 2373 | /* We have no info to copy */ |
| 2374 | break; |
| 2375 | } |
| 2376 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); |
| 2377 | } |
| 2378 | |
| 2379 | void s390_reset_system(void) |
| 2380 | { |
| 2381 | /* Disable prefixing */ |
| 2382 | set_prefix(0); |
| 2383 | |
| 2384 | /* Disable lowcore protection */ |
| 2385 | local_ctl_clear_bit(0, CR0_LOW_ADDRESS_PROTECTION_BIT); |
| 2386 | diag_amode31_ops.diag308_reset(); |
| 2387 | } |
| 2388 | |
| 2389 | #ifdef CONFIG_KEXEC_FILE |
| 2390 | |
| 2391 | int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, |
| 2392 | unsigned char flags, unsigned short cert) |
| 2393 | { |
| 2394 | struct ipl_report_component *comp; |
| 2395 | |
| 2396 | comp = vzalloc(sizeof(*comp)); |
| 2397 | if (!comp) |
| 2398 | return -ENOMEM; |
| 2399 | list_add_tail(&comp->list, &report->components); |
| 2400 | |
| 2401 | comp->entry.addr = kbuf->mem; |
| 2402 | comp->entry.len = kbuf->memsz; |
| 2403 | comp->entry.flags = flags; |
| 2404 | comp->entry.certificate_index = cert; |
| 2405 | |
| 2406 | report->size += sizeof(comp->entry); |
| 2407 | |
| 2408 | return 0; |
| 2409 | } |
| 2410 | |
| 2411 | int ipl_report_add_certificate(struct ipl_report *report, void *key, |
| 2412 | unsigned long addr, unsigned long len) |
| 2413 | { |
| 2414 | struct ipl_report_certificate *cert; |
| 2415 | |
| 2416 | cert = vzalloc(sizeof(*cert)); |
| 2417 | if (!cert) |
| 2418 | return -ENOMEM; |
| 2419 | list_add_tail(&cert->list, &report->certificates); |
| 2420 | |
| 2421 | cert->entry.addr = addr; |
| 2422 | cert->entry.len = len; |
| 2423 | cert->key = key; |
| 2424 | |
| 2425 | report->size += sizeof(cert->entry); |
| 2426 | report->size += cert->entry.len; |
| 2427 | |
| 2428 | return 0; |
| 2429 | } |
| 2430 | |
| 2431 | struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib) |
| 2432 | { |
| 2433 | struct ipl_report *report; |
| 2434 | |
| 2435 | report = vzalloc(sizeof(*report)); |
| 2436 | if (!report) |
| 2437 | return ERR_PTR(-ENOMEM); |
| 2438 | |
| 2439 | report->ipib = ipib; |
| 2440 | INIT_LIST_HEAD(&report->components); |
| 2441 | INIT_LIST_HEAD(&report->certificates); |
| 2442 | |
| 2443 | report->size = ALIGN(ipib->hdr.len, 8); |
| 2444 | report->size += sizeof(struct ipl_rl_hdr); |
| 2445 | report->size += sizeof(struct ipl_rb_components); |
| 2446 | report->size += sizeof(struct ipl_rb_certificates); |
| 2447 | |
| 2448 | return report; |
| 2449 | } |
| 2450 | |
| 2451 | void *ipl_report_finish(struct ipl_report *report) |
| 2452 | { |
| 2453 | struct ipl_report_certificate *cert; |
| 2454 | struct ipl_report_component *comp; |
| 2455 | struct ipl_rb_certificates *certs; |
| 2456 | struct ipl_parameter_block *ipib; |
| 2457 | struct ipl_rb_components *comps; |
| 2458 | struct ipl_rl_hdr *rl_hdr; |
| 2459 | void *buf, *ptr; |
| 2460 | |
| 2461 | buf = vzalloc(report->size); |
| 2462 | if (!buf) |
| 2463 | goto out; |
| 2464 | ptr = buf; |
| 2465 | |
| 2466 | memcpy(ptr, report->ipib, report->ipib->hdr.len); |
| 2467 | ipib = ptr; |
| 2468 | if (ipl_secure_flag) |
| 2469 | ipib->hdr.flags |= IPL_PL_FLAG_SIPL; |
| 2470 | ipib->hdr.flags |= IPL_PL_FLAG_IPLSR; |
| 2471 | ptr += report->ipib->hdr.len; |
| 2472 | ptr = PTR_ALIGN(ptr, 8); |
| 2473 | |
| 2474 | rl_hdr = ptr; |
| 2475 | ptr += sizeof(*rl_hdr); |
| 2476 | |
| 2477 | comps = ptr; |
| 2478 | comps->rbt = IPL_RBT_COMPONENTS; |
| 2479 | ptr += sizeof(*comps); |
| 2480 | list_for_each_entry(comp, &report->components, list) { |
| 2481 | memcpy(ptr, &comp->entry, sizeof(comp->entry)); |
| 2482 | ptr += sizeof(comp->entry); |
| 2483 | } |
| 2484 | comps->len = ptr - (void *)comps; |
| 2485 | |
| 2486 | certs = ptr; |
| 2487 | certs->rbt = IPL_RBT_CERTIFICATES; |
| 2488 | ptr += sizeof(*certs); |
| 2489 | list_for_each_entry(cert, &report->certificates, list) { |
| 2490 | memcpy(ptr, &cert->entry, sizeof(cert->entry)); |
| 2491 | ptr += sizeof(cert->entry); |
| 2492 | } |
| 2493 | certs->len = ptr - (void *)certs; |
| 2494 | rl_hdr->len = ptr - (void *)rl_hdr; |
| 2495 | |
| 2496 | list_for_each_entry(cert, &report->certificates, list) { |
| 2497 | memcpy(ptr, cert->key, cert->entry.len); |
| 2498 | ptr += cert->entry.len; |
| 2499 | } |
| 2500 | |
| 2501 | BUG_ON(ptr > buf + report->size); |
| 2502 | out: |
| 2503 | return buf; |
| 2504 | } |
| 2505 | |
| 2506 | int ipl_report_free(struct ipl_report *report) |
| 2507 | { |
| 2508 | struct ipl_report_component *comp, *ncomp; |
| 2509 | struct ipl_report_certificate *cert, *ncert; |
| 2510 | |
| 2511 | list_for_each_entry_safe(comp, ncomp, &report->components, list) |
| 2512 | vfree(comp); |
| 2513 | |
| 2514 | list_for_each_entry_safe(cert, ncert, &report->certificates, list) |
| 2515 | vfree(cert); |
| 2516 | |
| 2517 | vfree(report); |
| 2518 | |
| 2519 | return 0; |
| 2520 | } |
| 2521 | |
| 2522 | #endif |