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Commit | Line | Data |
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ff6b8ea6 MH |
1 | /* |
2 | * arch/s390/kernel/ipl.c | |
3 | * ipl/reipl/dump support for Linux on s390. | |
4 | * | |
8b646bd7 | 5 | * Copyright IBM Corp. 2005,2012 |
ff6b8ea6 MH |
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/module.h> | |
13 | #include <linux/device.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/reboot.h> | |
03a4d208 | 16 | #include <linux/ctype.h> |
0788fea4 | 17 | #include <linux/fs.h> |
5a0e3ad6 | 18 | #include <linux/gfp.h> |
60a0c68d | 19 | #include <linux/crash_dump.h> |
3ab121ab | 20 | #include <linux/debug_locks.h> |
46b05d26 | 21 | #include <asm/ipl.h> |
ff6b8ea6 MH |
22 | #include <asm/smp.h> |
23 | #include <asm/setup.h> | |
24 | #include <asm/cpcmd.h> | |
25 | #include <asm/cio.h> | |
03a4d208 | 26 | #include <asm/ebcdic.h> |
15e9b586 | 27 | #include <asm/reset.h> |
ab14de6c | 28 | #include <asm/sclp.h> |
159d1ff8 | 29 | #include <asm/checksum.h> |
3ab121ab | 30 | #include <asm/debug.h> |
4857d4bb | 31 | #include <asm/os_info.h> |
638ad34a | 32 | #include "entry.h" |
ff6b8ea6 MH |
33 | |
34 | #define IPL_PARM_BLOCK_VERSION 0 | |
03a4d208 | 35 | |
411ed322 MH |
36 | #define IPL_UNKNOWN_STR "unknown" |
37 | #define IPL_CCW_STR "ccw" | |
38 | #define IPL_FCP_STR "fcp" | |
39 | #define IPL_FCP_DUMP_STR "fcp_dump" | |
40 | #define IPL_NSS_STR "nss" | |
615b04b3 | 41 | |
99ca4e58 MH |
42 | #define DUMP_CCW_STR "ccw" |
43 | #define DUMP_FCP_STR "fcp" | |
44 | #define DUMP_NONE_STR "none" | |
45 | ||
46 | /* | |
47 | * Four shutdown trigger types are supported: | |
48 | * - panic | |
49 | * - halt | |
50 | * - power off | |
51 | * - reipl | |
7dd6b334 | 52 | * - restart |
99ca4e58 MH |
53 | */ |
54 | #define ON_PANIC_STR "on_panic" | |
55 | #define ON_HALT_STR "on_halt" | |
56 | #define ON_POFF_STR "on_poff" | |
57 | #define ON_REIPL_STR "on_reboot" | |
7dd6b334 | 58 | #define ON_RESTART_STR "on_restart" |
99ca4e58 MH |
59 | |
60 | struct shutdown_action; | |
61 | struct shutdown_trigger { | |
62 | char *name; | |
63 | struct shutdown_action *action; | |
64 | }; | |
65 | ||
66 | /* | |
099b7651 | 67 | * The following shutdown action types are supported: |
99ca4e58 MH |
68 | */ |
69 | #define SHUTDOWN_ACTION_IPL_STR "ipl" | |
70 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" | |
71 | #define SHUTDOWN_ACTION_DUMP_STR "dump" | |
72 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" | |
73 | #define SHUTDOWN_ACTION_STOP_STR "stop" | |
099b7651 | 74 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
99ca4e58 MH |
75 | |
76 | struct shutdown_action { | |
77 | char *name; | |
78 | void (*fn) (struct shutdown_trigger *trigger); | |
79 | int (*init) (void); | |
81088819 | 80 | int init_rc; |
99ca4e58 MH |
81 | }; |
82 | ||
ff6b8ea6 MH |
83 | static char *ipl_type_str(enum ipl_type type) |
84 | { | |
85 | switch (type) { | |
ff6b8ea6 MH |
86 | case IPL_TYPE_CCW: |
87 | return IPL_CCW_STR; | |
88 | case IPL_TYPE_FCP: | |
89 | return IPL_FCP_STR; | |
411ed322 MH |
90 | case IPL_TYPE_FCP_DUMP: |
91 | return IPL_FCP_DUMP_STR; | |
fe355b7f HY |
92 | case IPL_TYPE_NSS: |
93 | return IPL_NSS_STR; | |
ff6b8ea6 MH |
94 | case IPL_TYPE_UNKNOWN: |
95 | default: | |
96 | return IPL_UNKNOWN_STR; | |
97 | } | |
98 | } | |
99 | ||
411ed322 MH |
100 | enum dump_type { |
101 | DUMP_TYPE_NONE = 1, | |
102 | DUMP_TYPE_CCW = 2, | |
103 | DUMP_TYPE_FCP = 4, | |
104 | }; | |
105 | ||
411ed322 MH |
106 | static char *dump_type_str(enum dump_type type) |
107 | { | |
108 | switch (type) { | |
109 | case DUMP_TYPE_NONE: | |
110 | return DUMP_NONE_STR; | |
111 | case DUMP_TYPE_CCW: | |
112 | return DUMP_CCW_STR; | |
113 | case DUMP_TYPE_FCP: | |
114 | return DUMP_FCP_STR; | |
115 | default: | |
116 | return NULL; | |
117 | } | |
118 | } | |
119 | ||
120 | /* | |
121 | * Must be in data section since the bss section | |
122 | * is not cleared when these are accessed. | |
123 | */ | |
124 | static u16 ipl_devno __attribute__((__section__(".data"))) = 0; | |
125 | u32 ipl_flags __attribute__((__section__(".data"))) = 0; | |
126 | ||
ff6b8ea6 | 127 | enum ipl_method { |
411ed322 MH |
128 | REIPL_METHOD_CCW_CIO, |
129 | REIPL_METHOD_CCW_DIAG, | |
130 | REIPL_METHOD_CCW_VM, | |
131 | REIPL_METHOD_FCP_RO_DIAG, | |
132 | REIPL_METHOD_FCP_RW_DIAG, | |
133 | REIPL_METHOD_FCP_RO_VM, | |
134 | REIPL_METHOD_FCP_DUMP, | |
135 | REIPL_METHOD_NSS, | |
a0443fbb | 136 | REIPL_METHOD_NSS_DIAG, |
411ed322 MH |
137 | REIPL_METHOD_DEFAULT, |
138 | }; | |
139 | ||
140 | enum dump_method { | |
141 | DUMP_METHOD_NONE, | |
142 | DUMP_METHOD_CCW_CIO, | |
143 | DUMP_METHOD_CCW_DIAG, | |
144 | DUMP_METHOD_CCW_VM, | |
145 | DUMP_METHOD_FCP_DIAG, | |
ff6b8ea6 MH |
146 | }; |
147 | ||
ff6b8ea6 MH |
148 | static int diag308_set_works = 0; |
149 | ||
a0443fbb HB |
150 | static struct ipl_parameter_block ipl_block; |
151 | ||
ff6b8ea6 | 152 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
fe355b7f | 153 | |
ff6b8ea6 | 154 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
411ed322 | 155 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
ff6b8ea6 MH |
156 | static struct ipl_parameter_block *reipl_block_fcp; |
157 | static struct ipl_parameter_block *reipl_block_ccw; | |
a0443fbb | 158 | static struct ipl_parameter_block *reipl_block_nss; |
099b7651 | 159 | static struct ipl_parameter_block *reipl_block_actual; |
fe355b7f | 160 | |
411ed322 MH |
161 | static int dump_capabilities = DUMP_TYPE_NONE; |
162 | static enum dump_type dump_type = DUMP_TYPE_NONE; | |
163 | static enum dump_method dump_method = DUMP_METHOD_NONE; | |
ff6b8ea6 MH |
164 | static struct ipl_parameter_block *dump_block_fcp; |
165 | static struct ipl_parameter_block *dump_block_ccw; | |
166 | ||
05dd2530 HC |
167 | static struct sclp_ipl_info sclp_ipl_info; |
168 | ||
46b05d26 | 169 | int diag308(unsigned long subcode, void *addr) |
ff6b8ea6 | 170 | { |
94c12cc7 | 171 | register unsigned long _addr asm("0") = (unsigned long) addr; |
ff6b8ea6 MH |
172 | register unsigned long _rc asm("1") = 0; |
173 | ||
94c12cc7 MS |
174 | asm volatile( |
175 | " diag %0,%2,0x308\n" | |
176 | "0:\n" | |
177 | EX_TABLE(0b,0b) | |
ff6b8ea6 | 178 | : "+d" (_addr), "+d" (_rc) |
94c12cc7 | 179 | : "d" (subcode) : "cc", "memory"); |
ff6b8ea6 MH |
180 | return _rc; |
181 | } | |
411ed322 | 182 | EXPORT_SYMBOL_GPL(diag308); |
ff6b8ea6 MH |
183 | |
184 | /* SYSFS */ | |
185 | ||
186 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ | |
9b949165 GKH |
187 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
188 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
189 | char *page) \ |
190 | { \ | |
191 | return sprintf(page, _format, _value); \ | |
192 | } \ | |
9b949165 | 193 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
194 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL); |
195 | ||
196 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ | |
9b949165 GKH |
197 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
198 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
199 | char *page) \ |
200 | { \ | |
201 | return sprintf(page, _fmt_out, \ | |
202 | (unsigned long long) _value); \ | |
203 | } \ | |
9b949165 GKH |
204 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
205 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
206 | const char *buf, size_t len) \ |
207 | { \ | |
208 | unsigned long long value; \ | |
209 | if (sscanf(buf, _fmt_in, &value) != 1) \ | |
210 | return -EINVAL; \ | |
211 | _value = value; \ | |
212 | return len; \ | |
213 | } \ | |
9b949165 | 214 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
215 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
216 | sys_##_prefix##_##_name##_show, \ | |
217 | sys_##_prefix##_##_name##_store); | |
218 | ||
fe355b7f | 219 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
9b949165 GKH |
220 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
221 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
222 | char *page) \ |
223 | { \ | |
224 | return sprintf(page, _fmt_out, _value); \ | |
225 | } \ | |
9b949165 GKH |
226 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
227 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
228 | const char *buf, size_t len) \ |
229 | { \ | |
99ca4e58 | 230 | strncpy(_value, buf, sizeof(_value) - 1); \ |
1d802e24 | 231 | strim(_value); \ |
fe355b7f HY |
232 | return len; \ |
233 | } \ | |
9b949165 | 234 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
fe355b7f HY |
235 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
236 | sys_##_prefix##_##_name##_show, \ | |
237 | sys_##_prefix##_##_name##_store); | |
238 | ||
ff6b8ea6 MH |
239 | static void make_attrs_ro(struct attribute **attrs) |
240 | { | |
241 | while (*attrs) { | |
242 | (*attrs)->mode = S_IRUGO; | |
243 | attrs++; | |
244 | } | |
245 | } | |
246 | ||
247 | /* | |
248 | * ipl section | |
249 | */ | |
250 | ||
411ed322 | 251 | static __init enum ipl_type get_ipl_type(void) |
ff6b8ea6 MH |
252 | { |
253 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
254 | ||
fe355b7f HY |
255 | if (ipl_flags & IPL_NSS_VALID) |
256 | return IPL_TYPE_NSS; | |
e87bfe51 | 257 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
ff6b8ea6 | 258 | return IPL_TYPE_UNKNOWN; |
e87bfe51 | 259 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
ff6b8ea6 MH |
260 | return IPL_TYPE_CCW; |
261 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) | |
262 | return IPL_TYPE_UNKNOWN; | |
263 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) | |
264 | return IPL_TYPE_UNKNOWN; | |
411ed322 MH |
265 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
266 | return IPL_TYPE_FCP_DUMP; | |
ff6b8ea6 MH |
267 | return IPL_TYPE_FCP; |
268 | } | |
269 | ||
411ed322 MH |
270 | struct ipl_info ipl_info; |
271 | EXPORT_SYMBOL_GPL(ipl_info); | |
272 | ||
9b949165 GKH |
273 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
274 | char *page) | |
ff6b8ea6 | 275 | { |
411ed322 | 276 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
ff6b8ea6 MH |
277 | } |
278 | ||
9b949165 | 279 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
ff6b8ea6 | 280 | |
a0443fbb | 281 | /* VM IPL PARM routines */ |
c4736d96 MS |
282 | static size_t reipl_get_ascii_vmparm(char *dest, size_t size, |
283 | const struct ipl_parameter_block *ipb) | |
a0443fbb HB |
284 | { |
285 | int i; | |
684d2fd4 | 286 | size_t len; |
a0443fbb HB |
287 | char has_lowercase = 0; |
288 | ||
684d2fd4 | 289 | len = 0; |
a0443fbb HB |
290 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
291 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { | |
292 | ||
684d2fd4 | 293 | len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len); |
a0443fbb HB |
294 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
295 | /* If at least one character is lowercase, we assume mixed | |
296 | * case; otherwise we convert everything to lowercase. | |
297 | */ | |
298 | for (i = 0; i < len; i++) | |
299 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ | |
300 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ | |
301 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ | |
302 | has_lowercase = 1; | |
303 | break; | |
304 | } | |
305 | if (!has_lowercase) | |
306 | EBC_TOLOWER(dest, len); | |
307 | EBCASC(dest, len); | |
308 | } | |
309 | dest[len] = 0; | |
684d2fd4 HB |
310 | |
311 | return len; | |
a0443fbb HB |
312 | } |
313 | ||
684d2fd4 | 314 | size_t append_ipl_vmparm(char *dest, size_t size) |
a0443fbb | 315 | { |
684d2fd4 HB |
316 | size_t rc; |
317 | ||
318 | rc = 0; | |
a0443fbb | 319 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
684d2fd4 | 320 | rc = reipl_get_ascii_vmparm(dest, size, &ipl_block); |
a0443fbb HB |
321 | else |
322 | dest[0] = 0; | |
684d2fd4 | 323 | return rc; |
a0443fbb HB |
324 | } |
325 | ||
326 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, | |
327 | struct kobj_attribute *attr, char *page) | |
328 | { | |
329 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; | |
330 | ||
684d2fd4 | 331 | append_ipl_vmparm(parm, sizeof(parm)); |
a0443fbb HB |
332 | return sprintf(page, "%s\n", parm); |
333 | } | |
334 | ||
684d2fd4 HB |
335 | static size_t scpdata_length(const char* buf, size_t count) |
336 | { | |
337 | while (count) { | |
338 | if (buf[count - 1] != '\0' && buf[count - 1] != ' ') | |
339 | break; | |
340 | count--; | |
341 | } | |
342 | return count; | |
343 | } | |
344 | ||
c4736d96 MS |
345 | static size_t reipl_append_ascii_scpdata(char *dest, size_t size, |
346 | const struct ipl_parameter_block *ipb) | |
684d2fd4 HB |
347 | { |
348 | size_t count; | |
349 | size_t i; | |
18d00acf | 350 | int has_lowercase; |
684d2fd4 HB |
351 | |
352 | count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data, | |
353 | ipb->ipl_info.fcp.scp_data_len)); | |
354 | if (!count) | |
355 | goto out; | |
356 | ||
18d00acf HB |
357 | has_lowercase = 0; |
358 | for (i = 0; i < count; i++) { | |
684d2fd4 HB |
359 | if (!isascii(ipb->ipl_info.fcp.scp_data[i])) { |
360 | count = 0; | |
361 | goto out; | |
362 | } | |
18d00acf HB |
363 | if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i])) |
364 | has_lowercase = 1; | |
365 | } | |
684d2fd4 | 366 | |
18d00acf HB |
367 | if (has_lowercase) |
368 | memcpy(dest, ipb->ipl_info.fcp.scp_data, count); | |
369 | else | |
370 | for (i = 0; i < count; i++) | |
371 | dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]); | |
684d2fd4 HB |
372 | out: |
373 | dest[count] = '\0'; | |
374 | return count; | |
375 | } | |
376 | ||
377 | size_t append_ipl_scpdata(char *dest, size_t len) | |
378 | { | |
379 | size_t rc; | |
380 | ||
381 | rc = 0; | |
382 | if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP) | |
383 | rc = reipl_append_ascii_scpdata(dest, len, &ipl_block); | |
384 | else | |
385 | dest[0] = 0; | |
386 | return rc; | |
387 | } | |
388 | ||
389 | ||
a0443fbb HB |
390 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
391 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); | |
392 | ||
9b949165 GKH |
393 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
394 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
395 | { |
396 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
397 | ||
411ed322 | 398 | switch (ipl_info.type) { |
ff6b8ea6 MH |
399 | case IPL_TYPE_CCW: |
400 | return sprintf(page, "0.0.%04x\n", ipl_devno); | |
401 | case IPL_TYPE_FCP: | |
411ed322 | 402 | case IPL_TYPE_FCP_DUMP: |
ff6b8ea6 MH |
403 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
404 | default: | |
405 | return 0; | |
406 | } | |
407 | } | |
408 | ||
9b949165 | 409 | static struct kobj_attribute sys_ipl_device_attr = |
ff6b8ea6 MH |
410 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
411 | ||
2c3c8bea CW |
412 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
413 | struct bin_attribute *attr, char *buf, | |
414 | loff_t off, size_t count) | |
ff6b8ea6 | 415 | { |
0788fea4 AM |
416 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
417 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 MH |
418 | } |
419 | ||
420 | static struct bin_attribute ipl_parameter_attr = { | |
421 | .attr = { | |
422 | .name = "binary_parameter", | |
423 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
424 | }, |
425 | .size = PAGE_SIZE, | |
426 | .read = &ipl_parameter_read, | |
427 | }; | |
428 | ||
2c3c8bea CW |
429 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
430 | struct bin_attribute *attr, char *buf, | |
431 | loff_t off, size_t count) | |
ff6b8ea6 MH |
432 | { |
433 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
434 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
435 | ||
0788fea4 | 436 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 MH |
437 | } |
438 | ||
439 | static struct bin_attribute ipl_scp_data_attr = { | |
440 | .attr = { | |
441 | .name = "scp_data", | |
442 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
443 | }, |
444 | .size = PAGE_SIZE, | |
05bd711e | 445 | .read = ipl_scp_data_read, |
ff6b8ea6 MH |
446 | }; |
447 | ||
448 | /* FCP ipl device attributes */ | |
449 | ||
450 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
451 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
452 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
453 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
454 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
455 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
456 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
457 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
458 | ||
459 | static struct attribute *ipl_fcp_attrs[] = { | |
460 | &sys_ipl_type_attr.attr, | |
461 | &sys_ipl_device_attr.attr, | |
462 | &sys_ipl_fcp_wwpn_attr.attr, | |
463 | &sys_ipl_fcp_lun_attr.attr, | |
464 | &sys_ipl_fcp_bootprog_attr.attr, | |
465 | &sys_ipl_fcp_br_lba_attr.attr, | |
466 | NULL, | |
467 | }; | |
468 | ||
469 | static struct attribute_group ipl_fcp_attr_group = { | |
470 | .attrs = ipl_fcp_attrs, | |
471 | }; | |
472 | ||
473 | /* CCW ipl device attributes */ | |
474 | ||
9b949165 GKH |
475 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
476 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
477 | { |
478 | char loadparm[LOADPARM_LEN + 1] = {}; | |
479 | ||
05dd2530 | 480 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 481 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 482 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 483 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 484 | strim(loadparm); |
03a4d208 MH |
485 | return sprintf(page, "%s\n", loadparm); |
486 | } | |
487 | ||
9b949165 | 488 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
489 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
490 | ||
a0443fbb HB |
491 | static struct attribute *ipl_ccw_attrs_vm[] = { |
492 | &sys_ipl_type_attr.attr, | |
493 | &sys_ipl_device_attr.attr, | |
494 | &sys_ipl_ccw_loadparm_attr.attr, | |
495 | &sys_ipl_vm_parm_attr.attr, | |
496 | NULL, | |
497 | }; | |
498 | ||
499 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
500 | &sys_ipl_type_attr.attr, |
501 | &sys_ipl_device_attr.attr, | |
03a4d208 | 502 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
503 | NULL, |
504 | }; | |
505 | ||
a0443fbb HB |
506 | static struct attribute_group ipl_ccw_attr_group_vm = { |
507 | .attrs = ipl_ccw_attrs_vm, | |
508 | }; | |
509 | ||
510 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
511 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
512 | }; |
513 | ||
fe355b7f HY |
514 | /* NSS ipl device attributes */ |
515 | ||
516 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
517 | ||
518 | static struct attribute *ipl_nss_attrs[] = { | |
519 | &sys_ipl_type_attr.attr, | |
520 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
521 | &sys_ipl_ccw_loadparm_attr.attr, |
522 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
523 | NULL, |
524 | }; | |
525 | ||
526 | static struct attribute_group ipl_nss_attr_group = { | |
527 | .attrs = ipl_nss_attrs, | |
528 | }; | |
529 | ||
ff6b8ea6 MH |
530 | /* UNKNOWN ipl device attributes */ |
531 | ||
532 | static struct attribute *ipl_unknown_attrs[] = { | |
533 | &sys_ipl_type_attr.attr, | |
534 | NULL, | |
535 | }; | |
536 | ||
537 | static struct attribute_group ipl_unknown_attr_group = { | |
538 | .attrs = ipl_unknown_attrs, | |
539 | }; | |
540 | ||
d91885be | 541 | static struct kset *ipl_kset; |
ff6b8ea6 | 542 | |
99ca4e58 MH |
543 | static int __init ipl_register_fcp_files(void) |
544 | { | |
545 | int rc; | |
546 | ||
547 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
548 | if (rc) | |
549 | goto out; | |
550 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
551 | if (rc) | |
552 | goto out_ipl_parm; | |
553 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr); | |
554 | if (!rc) | |
555 | goto out; | |
556 | ||
557 | sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
558 | ||
559 | out_ipl_parm: | |
560 | sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
561 | out: | |
562 | return rc; | |
563 | } | |
564 | ||
2c2df118 | 565 | static void __ipl_run(void *unused) |
99ca4e58 MH |
566 | { |
567 | diag308(DIAG308_IPL, NULL); | |
568 | if (MACHINE_IS_VM) | |
569 | __cpcmd("IPL", NULL, 0, NULL); | |
570 | else if (ipl_info.type == IPL_TYPE_CCW) | |
571 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
572 | } | |
573 | ||
2c2df118 HC |
574 | static void ipl_run(struct shutdown_trigger *trigger) |
575 | { | |
8b646bd7 | 576 | smp_call_ipl_cpu(__ipl_run, NULL); |
2c2df118 HC |
577 | } |
578 | ||
2bc89b5e | 579 | static int __init ipl_init(void) |
99ca4e58 MH |
580 | { |
581 | int rc; | |
582 | ||
583 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
584 | if (!ipl_kset) { | |
585 | rc = -ENOMEM; | |
586 | goto out; | |
587 | } | |
588 | switch (ipl_info.type) { | |
589 | case IPL_TYPE_CCW: | |
a0443fbb HB |
590 | if (MACHINE_IS_VM) |
591 | rc = sysfs_create_group(&ipl_kset->kobj, | |
592 | &ipl_ccw_attr_group_vm); | |
593 | else | |
594 | rc = sysfs_create_group(&ipl_kset->kobj, | |
595 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
596 | break; |
597 | case IPL_TYPE_FCP: | |
598 | case IPL_TYPE_FCP_DUMP: | |
599 | rc = ipl_register_fcp_files(); | |
600 | break; | |
601 | case IPL_TYPE_NSS: | |
602 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
603 | break; | |
604 | default: | |
605 | rc = sysfs_create_group(&ipl_kset->kobj, | |
606 | &ipl_unknown_attr_group); | |
607 | break; | |
608 | } | |
609 | out: | |
610 | if (rc) | |
611 | panic("ipl_init failed: rc = %i\n", rc); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
2bc89b5e HC |
616 | static struct shutdown_action __refdata ipl_action = { |
617 | .name = SHUTDOWN_ACTION_IPL_STR, | |
618 | .fn = ipl_run, | |
619 | .init = ipl_init, | |
620 | }; | |
99ca4e58 | 621 | |
ff6b8ea6 | 622 | /* |
99ca4e58 | 623 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
624 | */ |
625 | ||
a0443fbb HB |
626 | /* VM IPL PARM attributes */ |
627 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
628 | char *page) | |
629 | { | |
630 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
631 | ||
684d2fd4 | 632 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
633 | return sprintf(page, "%s\n", vmparm); |
634 | } | |
635 | ||
636 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
637 | size_t vmparm_max, | |
638 | const char *buf, size_t len) | |
639 | { | |
640 | int i, ip_len; | |
641 | ||
642 | /* ignore trailing newline */ | |
643 | ip_len = len; | |
644 | if ((len > 0) && (buf[len - 1] == '\n')) | |
645 | ip_len--; | |
646 | ||
647 | if (ip_len > vmparm_max) | |
648 | return -EINVAL; | |
649 | ||
650 | /* parm is used to store kernel options, check for common chars */ | |
651 | for (i = 0; i < ip_len; i++) | |
652 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
653 | return -EINVAL; | |
654 | ||
655 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
656 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
657 | if (ip_len > 0) { | |
658 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
659 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
660 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
661 | } else { | |
662 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
663 | } | |
664 | ||
665 | return len; | |
666 | } | |
667 | ||
668 | /* NSS wrapper */ | |
669 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
670 | struct kobj_attribute *attr, char *page) | |
671 | { | |
672 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
673 | } | |
674 | ||
675 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
676 | struct kobj_attribute *attr, | |
677 | const char *buf, size_t len) | |
678 | { | |
679 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
680 | } | |
681 | ||
682 | /* CCW wrapper */ | |
683 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
684 | struct kobj_attribute *attr, char *page) | |
685 | { | |
686 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
687 | } | |
688 | ||
689 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
690 | struct kobj_attribute *attr, | |
691 | const char *buf, size_t len) | |
692 | { | |
693 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
694 | } | |
695 | ||
696 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
697 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
698 | reipl_nss_vmparm_store); | |
699 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
700 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
701 | reipl_ccw_vmparm_store); | |
702 | ||
ff6b8ea6 MH |
703 | /* FCP reipl device attributes */ |
704 | ||
2c3c8bea | 705 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
706 | struct bin_attribute *attr, |
707 | char *buf, loff_t off, size_t count) | |
708 | { | |
709 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
710 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
711 | ||
712 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
713 | } | |
714 | ||
2c3c8bea | 715 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
716 | struct bin_attribute *attr, |
717 | char *buf, loff_t off, size_t count) | |
718 | { | |
719 | size_t padding; | |
720 | size_t scpdata_len; | |
721 | ||
722 | if (off < 0) | |
723 | return -EINVAL; | |
724 | ||
725 | if (off >= DIAG308_SCPDATA_SIZE) | |
726 | return -ENOSPC; | |
727 | ||
728 | if (count > DIAG308_SCPDATA_SIZE - off) | |
729 | count = DIAG308_SCPDATA_SIZE - off; | |
730 | ||
731 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf + off, count); | |
732 | scpdata_len = off + count; | |
733 | ||
734 | if (scpdata_len % 8) { | |
735 | padding = 8 - (scpdata_len % 8); | |
736 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
737 | 0, padding); | |
738 | scpdata_len += padding; | |
739 | } | |
740 | ||
741 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
742 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
743 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
744 | ||
745 | return count; | |
746 | } | |
747 | ||
748 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = { | |
749 | .attr = { | |
750 | .name = "scp_data", | |
751 | .mode = S_IRUGO | S_IWUSR, | |
752 | }, | |
753 | .size = PAGE_SIZE, | |
754 | .read = reipl_fcp_scpdata_read, | |
755 | .write = reipl_fcp_scpdata_write, | |
756 | }; | |
757 | ||
ff6b8ea6 MH |
758 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
759 | reipl_block_fcp->ipl_info.fcp.wwpn); | |
760 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", | |
761 | reipl_block_fcp->ipl_info.fcp.lun); | |
762 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
763 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
764 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
765 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
766 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
767 | reipl_block_fcp->ipl_info.fcp.devno); | |
768 | ||
769 | static struct attribute *reipl_fcp_attrs[] = { | |
770 | &sys_reipl_fcp_device_attr.attr, | |
771 | &sys_reipl_fcp_wwpn_attr.attr, | |
772 | &sys_reipl_fcp_lun_attr.attr, | |
773 | &sys_reipl_fcp_bootprog_attr.attr, | |
774 | &sys_reipl_fcp_br_lba_attr.attr, | |
775 | NULL, | |
776 | }; | |
777 | ||
778 | static struct attribute_group reipl_fcp_attr_group = { | |
ff6b8ea6 MH |
779 | .attrs = reipl_fcp_attrs, |
780 | }; | |
781 | ||
782 | /* CCW reipl device attributes */ | |
783 | ||
784 | DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
785 | reipl_block_ccw->ipl_info.ccw.devno); | |
786 | ||
a0443fbb HB |
787 | static void reipl_get_ascii_loadparm(char *loadparm, |
788 | struct ipl_parameter_block *ibp) | |
03a4d208 | 789 | { |
a0443fbb | 790 | memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN); |
03a4d208 MH |
791 | EBCASC(loadparm, LOADPARM_LEN); |
792 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 793 | strim(loadparm); |
03a4d208 MH |
794 | } |
795 | ||
a0443fbb HB |
796 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
797 | char *page) | |
03a4d208 MH |
798 | { |
799 | char buf[LOADPARM_LEN + 1]; | |
800 | ||
a0443fbb | 801 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
802 | return sprintf(page, "%s\n", buf); |
803 | } | |
804 | ||
a0443fbb HB |
805 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
806 | const char *buf, size_t len) | |
03a4d208 MH |
807 | { |
808 | int i, lp_len; | |
809 | ||
810 | /* ignore trailing newline */ | |
811 | lp_len = len; | |
812 | if ((len > 0) && (buf[len - 1] == '\n')) | |
813 | lp_len--; | |
814 | /* loadparm can have max 8 characters and must not start with a blank */ | |
815 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
816 | return -EINVAL; | |
817 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
818 | for (i = 0; i < lp_len; i++) { | |
819 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
820 | (buf[i] == '.')) | |
821 | continue; | |
822 | return -EINVAL; | |
823 | } | |
824 | /* initialize loadparm with blanks */ | |
a0443fbb | 825 | memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN); |
03a4d208 | 826 | /* copy and convert to ebcdic */ |
a0443fbb HB |
827 | memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len); |
828 | ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN); | |
03a4d208 MH |
829 | return len; |
830 | } | |
831 | ||
a0443fbb HB |
832 | /* NSS wrapper */ |
833 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
834 | struct kobj_attribute *attr, char *page) | |
835 | { | |
836 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
837 | } | |
838 | ||
839 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
840 | struct kobj_attribute *attr, | |
841 | const char *buf, size_t len) | |
842 | { | |
843 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
844 | } | |
845 | ||
846 | /* CCW wrapper */ | |
847 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
848 | struct kobj_attribute *attr, char *page) | |
849 | { | |
850 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
851 | } | |
852 | ||
853 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
854 | struct kobj_attribute *attr, | |
855 | const char *buf, size_t len) | |
856 | { | |
857 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
858 | } | |
859 | ||
9b949165 | 860 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
861 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
862 | reipl_ccw_loadparm_store); | |
863 | ||
864 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
865 | &sys_reipl_ccw_device_attr.attr, | |
866 | &sys_reipl_ccw_loadparm_attr.attr, | |
867 | &sys_reipl_ccw_vmparm_attr.attr, | |
868 | NULL, | |
869 | }; | |
03a4d208 | 870 | |
a0443fbb | 871 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 872 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 873 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
874 | NULL, |
875 | }; | |
876 | ||
a0443fbb | 877 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 878 | .name = IPL_CCW_STR, |
a0443fbb HB |
879 | .attrs = reipl_ccw_attrs_vm, |
880 | }; | |
881 | ||
882 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
883 | .name = IPL_CCW_STR, | |
884 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
885 | }; |
886 | ||
fe355b7f HY |
887 | |
888 | /* NSS reipl device attributes */ | |
a0443fbb HB |
889 | static void reipl_get_ascii_nss_name(char *dst, |
890 | struct ipl_parameter_block *ipb) | |
891 | { | |
892 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
893 | EBCASC(dst, NSS_NAME_SIZE); | |
894 | dst[NSS_NAME_SIZE] = 0; | |
895 | } | |
896 | ||
897 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
898 | struct kobj_attribute *attr, char *page) | |
899 | { | |
900 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
901 | ||
902 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
903 | return sprintf(page, "%s\n", nss_name); | |
904 | } | |
905 | ||
906 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
907 | struct kobj_attribute *attr, | |
908 | const char *buf, size_t len) | |
909 | { | |
910 | int nss_len; | |
911 | ||
912 | /* ignore trailing newline */ | |
913 | nss_len = len; | |
914 | if ((len > 0) && (buf[len - 1] == '\n')) | |
915 | nss_len--; | |
fe355b7f | 916 | |
a0443fbb HB |
917 | if (nss_len > NSS_NAME_SIZE) |
918 | return -EINVAL; | |
919 | ||
920 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
921 | if (nss_len > 0) { | |
922 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
923 | DIAG308_VM_FLAGS_NSS_VALID; | |
924 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
925 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
926 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
927 | } else { | |
928 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
929 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
930 | } | |
931 | ||
932 | return len; | |
933 | } | |
934 | ||
935 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
936 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
937 | reipl_nss_name_store); | |
938 | ||
939 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
940 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
941 | reipl_nss_loadparm_store); | |
fe355b7f HY |
942 | |
943 | static struct attribute *reipl_nss_attrs[] = { | |
944 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
945 | &sys_reipl_nss_loadparm_attr.attr, |
946 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
947 | NULL, |
948 | }; | |
949 | ||
950 | static struct attribute_group reipl_nss_attr_group = { | |
951 | .name = IPL_NSS_STR, | |
952 | .attrs = reipl_nss_attrs, | |
953 | }; | |
954 | ||
4857d4bb MH |
955 | static void set_reipl_block_actual(struct ipl_parameter_block *reipl_block) |
956 | { | |
957 | reipl_block_actual = reipl_block; | |
958 | os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, | |
959 | reipl_block->hdr.len); | |
960 | } | |
961 | ||
ff6b8ea6 MH |
962 | /* reipl type */ |
963 | ||
964 | static int reipl_set_type(enum ipl_type type) | |
965 | { | |
966 | if (!(reipl_capabilities & type)) | |
967 | return -EINVAL; | |
968 | ||
969 | switch(type) { | |
970 | case IPL_TYPE_CCW: | |
48657d22 MH |
971 | if (diag308_set_works) |
972 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
973 | else if (MACHINE_IS_VM) | |
411ed322 | 974 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 975 | else |
411ed322 | 976 | reipl_method = REIPL_METHOD_CCW_CIO; |
4857d4bb | 977 | set_reipl_block_actual(reipl_block_ccw); |
ff6b8ea6 MH |
978 | break; |
979 | case IPL_TYPE_FCP: | |
980 | if (diag308_set_works) | |
411ed322 | 981 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 982 | else if (MACHINE_IS_VM) |
411ed322 | 983 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 984 | else |
411ed322 | 985 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
4857d4bb | 986 | set_reipl_block_actual(reipl_block_fcp); |
411ed322 MH |
987 | break; |
988 | case IPL_TYPE_FCP_DUMP: | |
989 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 990 | break; |
fe355b7f | 991 | case IPL_TYPE_NSS: |
a0443fbb HB |
992 | if (diag308_set_works) |
993 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
994 | else | |
995 | reipl_method = REIPL_METHOD_NSS; | |
4857d4bb | 996 | set_reipl_block_actual(reipl_block_nss); |
411ed322 MH |
997 | break; |
998 | case IPL_TYPE_UNKNOWN: | |
999 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 1000 | break; |
ff6b8ea6 | 1001 | default: |
411ed322 | 1002 | BUG(); |
ff6b8ea6 MH |
1003 | } |
1004 | reipl_type = type; | |
1005 | return 0; | |
1006 | } | |
1007 | ||
9b949165 GKH |
1008 | static ssize_t reipl_type_show(struct kobject *kobj, |
1009 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
1010 | { |
1011 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
1012 | } | |
1013 | ||
9b949165 GKH |
1014 | static ssize_t reipl_type_store(struct kobject *kobj, |
1015 | struct kobj_attribute *attr, | |
1016 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1017 | { |
1018 | int rc = -EINVAL; | |
1019 | ||
1020 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1021 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1022 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1023 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1024 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1025 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1026 | return (rc != 0) ? rc : len; |
1027 | } | |
1028 | ||
9b949165 | 1029 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1030 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1031 | |
d91885be | 1032 | static struct kset *reipl_kset; |
684d2fd4 | 1033 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1034 | |
a0443fbb HB |
1035 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1036 | const enum ipl_method m) | |
1037 | { | |
1038 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1039 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1040 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1041 | size_t pos = 0; | |
1042 | ||
1043 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1044 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1045 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1046 | |
1047 | switch (m) { | |
1048 | case REIPL_METHOD_CCW_VM: | |
1049 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1050 | break; | |
1051 | case REIPL_METHOD_NSS: | |
1052 | pos = sprintf(dst, "IPL %s", nss_name); | |
1053 | break; | |
1054 | default: | |
1055 | break; | |
1056 | } | |
1057 | if (strlen(loadparm) > 0) | |
1058 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1059 | if (strlen(vmparm) > 0) | |
1060 | sprintf(dst + pos, " PARM %s", vmparm); | |
1061 | } | |
1062 | ||
2c2df118 | 1063 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1064 | { |
1065 | struct ccw_dev_id devid; | |
a0443fbb | 1066 | static char buf[128]; |
ff6b8ea6 | 1067 | |
ff6b8ea6 | 1068 | switch (reipl_method) { |
411ed322 | 1069 | case REIPL_METHOD_CCW_CIO: |
ff6b8ea6 MH |
1070 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
1071 | devid.ssid = 0; | |
1072 | reipl_ccw_dev(&devid); | |
1073 | break; | |
411ed322 | 1074 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1075 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1076 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1077 | break; |
411ed322 | 1078 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 MH |
1079 | diag308(DIAG308_SET, reipl_block_ccw); |
1080 | diag308(DIAG308_IPL, NULL); | |
1081 | break; | |
411ed322 | 1082 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 MH |
1083 | diag308(DIAG308_SET, reipl_block_fcp); |
1084 | diag308(DIAG308_IPL, NULL); | |
1085 | break; | |
411ed322 | 1086 | case REIPL_METHOD_FCP_RO_DIAG: |
ff6b8ea6 MH |
1087 | diag308(DIAG308_IPL, NULL); |
1088 | break; | |
411ed322 | 1089 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1090 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1091 | break; |
a0443fbb HB |
1092 | case REIPL_METHOD_NSS_DIAG: |
1093 | diag308(DIAG308_SET, reipl_block_nss); | |
1094 | diag308(DIAG308_IPL, NULL); | |
1095 | break; | |
411ed322 | 1096 | case REIPL_METHOD_NSS: |
a0443fbb | 1097 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1098 | __cpcmd(buf, NULL, 0, NULL); |
1099 | break; | |
411ed322 | 1100 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1101 | if (MACHINE_IS_VM) |
740b5706 | 1102 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 MH |
1103 | diag308(DIAG308_IPL, NULL); |
1104 | break; | |
411ed322 | 1105 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1106 | break; |
ff6b8ea6 | 1107 | } |
208e5591 | 1108 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1109 | } |
1110 | ||
2c2df118 HC |
1111 | static void reipl_run(struct shutdown_trigger *trigger) |
1112 | { | |
8b646bd7 | 1113 | smp_call_ipl_cpu(__reipl_run, NULL); |
2c2df118 HC |
1114 | } |
1115 | ||
a0443fbb | 1116 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1117 | { |
a0443fbb HB |
1118 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1119 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1120 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1121 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1122 | } | |
ff6b8ea6 | 1123 | |
a0443fbb HB |
1124 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1125 | { | |
1126 | /* LOADPARM */ | |
1127 | /* check if read scp info worked and set loadparm */ | |
1128 | if (sclp_ipl_info.is_valid) | |
1129 | memcpy(ipb->ipl_info.ccw.load_parm, | |
1130 | &sclp_ipl_info.loadparm, LOADPARM_LEN); | |
1131 | else | |
1132 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
1133 | memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN); | |
1134 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; | |
1135 | ||
1136 | /* VM PARM */ | |
1137 | if (MACHINE_IS_VM && diag308_set_works && | |
1138 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1139 | ||
1140 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1141 | ipb->ipl_info.ccw.vm_parm_len = | |
1142 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1143 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1144 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1145 | } | |
ff6b8ea6 MH |
1146 | } |
1147 | ||
99ca4e58 | 1148 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1149 | { |
1150 | int rc; | |
1151 | ||
99ca4e58 MH |
1152 | if (!MACHINE_IS_VM) |
1153 | return 0; | |
a0443fbb HB |
1154 | |
1155 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1156 | if (!reipl_block_nss) | |
1157 | return -ENOMEM; | |
1158 | ||
1159 | if (!diag308_set_works) | |
1160 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1161 | ||
99ca4e58 | 1162 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1163 | if (rc) |
1164 | return rc; | |
a0443fbb HB |
1165 | |
1166 | reipl_block_ccw_init(reipl_block_nss); | |
1167 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1168 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1169 | ' ', NSS_NAME_SIZE); | |
1170 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1171 | kernel_nss_name, strlen(kernel_nss_name)); | |
1172 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1173 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1174 | DIAG308_VM_FLAGS_NSS_VALID; | |
1175 | ||
1176 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1177 | } | |
1178 | ||
fe355b7f HY |
1179 | reipl_capabilities |= IPL_TYPE_NSS; |
1180 | return 0; | |
1181 | } | |
1182 | ||
ff6b8ea6 MH |
1183 | static int __init reipl_ccw_init(void) |
1184 | { | |
1185 | int rc; | |
1186 | ||
1187 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1188 | if (!reipl_block_ccw) | |
1189 | return -ENOMEM; | |
a0443fbb HB |
1190 | |
1191 | if (MACHINE_IS_VM) { | |
1192 | if (!diag308_set_works) | |
1193 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1194 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1195 | &reipl_ccw_attr_group_vm); | |
1196 | } else { | |
1197 | if(!diag308_set_works) | |
1198 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1199 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1200 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1201 | } |
a0443fbb HB |
1202 | if (rc) |
1203 | return rc; | |
1204 | ||
1205 | reipl_block_ccw_init(reipl_block_ccw); | |
1206 | if (ipl_info.type == IPL_TYPE_CCW) { | |
ff6b8ea6 | 1207 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1208 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1209 | } | |
1210 | ||
ff6b8ea6 MH |
1211 | reipl_capabilities |= IPL_TYPE_CCW; |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static int __init reipl_fcp_init(void) | |
1216 | { | |
1217 | int rc; | |
1218 | ||
008d2d11 | 1219 | if (!diag308_set_works) { |
684d2fd4 | 1220 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1221 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1222 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1223 | } else | |
008d2d11 MH |
1224 | return 0; |
1225 | } | |
ff6b8ea6 MH |
1226 | |
1227 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1228 | if (!reipl_block_fcp) | |
1229 | return -ENOMEM; | |
684d2fd4 HB |
1230 | |
1231 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1232 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1233 | &reipl_kset->kobj); | |
798620fb | 1234 | if (!reipl_fcp_kset) { |
684d2fd4 HB |
1235 | free_page((unsigned long) reipl_block_fcp); |
1236 | return -ENOMEM; | |
1237 | } | |
1238 | ||
1239 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1240 | if (rc) { |
684d2fd4 HB |
1241 | kset_unregister(reipl_fcp_kset); |
1242 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1243 | return rc; |
1244 | } | |
684d2fd4 HB |
1245 | |
1246 | rc = sysfs_create_bin_file(&reipl_fcp_kset->kobj, | |
1247 | &sys_reipl_fcp_scp_data_attr); | |
1248 | if (rc) { | |
1249 | sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
1250 | kset_unregister(reipl_fcp_kset); | |
1251 | free_page((unsigned long) reipl_block_fcp); | |
1252 | return rc; | |
1253 | } | |
1254 | ||
1255 | if (ipl_info.type == IPL_TYPE_FCP) | |
ff6b8ea6 | 1256 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
684d2fd4 | 1257 | else { |
ff6b8ea6 MH |
1258 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1259 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1260 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1261 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1262 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1263 | } | |
1264 | reipl_capabilities |= IPL_TYPE_FCP; | |
1265 | return 0; | |
1266 | } | |
1267 | ||
4857d4bb MH |
1268 | static int __init reipl_type_init(void) |
1269 | { | |
1270 | enum ipl_type reipl_type = ipl_info.type; | |
1271 | struct ipl_parameter_block *reipl_block; | |
1272 | unsigned long size; | |
1273 | ||
1274 | reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); | |
1275 | if (!reipl_block) | |
1276 | goto out; | |
1277 | /* | |
1278 | * If we have an OS info reipl block, this will be used | |
1279 | */ | |
1280 | if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_FCP) { | |
1281 | memcpy(reipl_block_fcp, reipl_block, size); | |
1282 | reipl_type = IPL_TYPE_FCP; | |
1283 | } else if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_CCW) { | |
1284 | memcpy(reipl_block_ccw, reipl_block, size); | |
1285 | reipl_type = IPL_TYPE_CCW; | |
1286 | } | |
1287 | out: | |
1288 | return reipl_set_type(reipl_type); | |
1289 | } | |
1290 | ||
2bc89b5e | 1291 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1292 | { |
1293 | int rc; | |
1294 | ||
f62ed9e3 | 1295 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1296 | if (!reipl_kset) |
1297 | return -ENOMEM; | |
1298 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1299 | if (rc) { |
d91885be | 1300 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1301 | return rc; |
1302 | } | |
1303 | rc = reipl_ccw_init(); | |
1304 | if (rc) | |
1305 | return rc; | |
1306 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1307 | if (rc) |
1308 | return rc; | |
1309 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1310 | if (rc) |
1311 | return rc; | |
4857d4bb | 1312 | return reipl_type_init(); |
ff6b8ea6 MH |
1313 | } |
1314 | ||
2bc89b5e HC |
1315 | static struct shutdown_action __refdata reipl_action = { |
1316 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1317 | .fn = reipl_run, | |
1318 | .init = reipl_init, | |
1319 | }; | |
99ca4e58 MH |
1320 | |
1321 | /* | |
1322 | * dump shutdown action: Dump Linux on shutdown. | |
1323 | */ | |
1324 | ||
1325 | /* FCP dump device attributes */ | |
1326 | ||
1327 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", | |
1328 | dump_block_fcp->ipl_info.fcp.wwpn); | |
1329 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", | |
1330 | dump_block_fcp->ipl_info.fcp.lun); | |
1331 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1332 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1333 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1334 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1335 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1336 | dump_block_fcp->ipl_info.fcp.devno); | |
1337 | ||
1338 | static struct attribute *dump_fcp_attrs[] = { | |
1339 | &sys_dump_fcp_device_attr.attr, | |
1340 | &sys_dump_fcp_wwpn_attr.attr, | |
1341 | &sys_dump_fcp_lun_attr.attr, | |
1342 | &sys_dump_fcp_bootprog_attr.attr, | |
1343 | &sys_dump_fcp_br_lba_attr.attr, | |
1344 | NULL, | |
1345 | }; | |
1346 | ||
1347 | static struct attribute_group dump_fcp_attr_group = { | |
1348 | .name = IPL_FCP_STR, | |
1349 | .attrs = dump_fcp_attrs, | |
1350 | }; | |
1351 | ||
1352 | /* CCW dump device attributes */ | |
1353 | ||
1354 | DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1355 | dump_block_ccw->ipl_info.ccw.devno); | |
1356 | ||
1357 | static struct attribute *dump_ccw_attrs[] = { | |
1358 | &sys_dump_ccw_device_attr.attr, | |
1359 | NULL, | |
1360 | }; | |
1361 | ||
1362 | static struct attribute_group dump_ccw_attr_group = { | |
1363 | .name = IPL_CCW_STR, | |
1364 | .attrs = dump_ccw_attrs, | |
1365 | }; | |
1366 | ||
1367 | /* dump type */ | |
1368 | ||
1369 | static int dump_set_type(enum dump_type type) | |
1370 | { | |
1371 | if (!(dump_capabilities & type)) | |
1372 | return -EINVAL; | |
1373 | switch (type) { | |
1374 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1375 | if (diag308_set_works) |
1376 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1377 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1378 | dump_method = DUMP_METHOD_CCW_VM; |
1379 | else | |
1380 | dump_method = DUMP_METHOD_CCW_CIO; | |
1381 | break; | |
1382 | case DUMP_TYPE_FCP: | |
1383 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1384 | break; | |
1385 | default: | |
1386 | dump_method = DUMP_METHOD_NONE; | |
1387 | } | |
1388 | dump_type = type; | |
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | static ssize_t dump_type_show(struct kobject *kobj, | |
1393 | struct kobj_attribute *attr, char *page) | |
1394 | { | |
1395 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1396 | } | |
1397 | ||
1398 | static ssize_t dump_type_store(struct kobject *kobj, | |
1399 | struct kobj_attribute *attr, | |
1400 | const char *buf, size_t len) | |
1401 | { | |
1402 | int rc = -EINVAL; | |
1403 | ||
1404 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1405 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1406 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1407 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1408 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1409 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1410 | return (rc != 0) ? rc : len; | |
1411 | } | |
1412 | ||
1413 | static struct kobj_attribute dump_type_attr = | |
1414 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1415 | ||
1416 | static struct kset *dump_kset; | |
1417 | ||
2c2df118 | 1418 | static void __dump_run(void *unused) |
99ca4e58 MH |
1419 | { |
1420 | struct ccw_dev_id devid; | |
1421 | static char buf[100]; | |
1422 | ||
1423 | switch (dump_method) { | |
1424 | case DUMP_METHOD_CCW_CIO: | |
99ca4e58 MH |
1425 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
1426 | devid.ssid = 0; | |
1427 | reipl_ccw_dev(&devid); | |
1428 | break; | |
1429 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1430 | sprintf(buf, "STORE STATUS"); |
1431 | __cpcmd(buf, NULL, 0, NULL); | |
1432 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1433 | __cpcmd(buf, NULL, 0, NULL); | |
1434 | break; | |
1435 | case DUMP_METHOD_CCW_DIAG: | |
1436 | diag308(DIAG308_SET, dump_block_ccw); | |
1437 | diag308(DIAG308_DUMP, NULL); | |
1438 | break; | |
1439 | case DUMP_METHOD_FCP_DIAG: | |
1440 | diag308(DIAG308_SET, dump_block_fcp); | |
1441 | diag308(DIAG308_DUMP, NULL); | |
1442 | break; | |
2c2df118 HC |
1443 | default: |
1444 | break; | |
99ca4e58 | 1445 | } |
2c2df118 HC |
1446 | } |
1447 | ||
1448 | static void dump_run(struct shutdown_trigger *trigger) | |
1449 | { | |
1450 | if (dump_method == DUMP_METHOD_NONE) | |
1451 | return; | |
1452 | smp_send_stop(); | |
8b646bd7 | 1453 | smp_call_ipl_cpu(__dump_run, NULL); |
99ca4e58 MH |
1454 | } |
1455 | ||
ff6b8ea6 MH |
1456 | static int __init dump_ccw_init(void) |
1457 | { | |
1458 | int rc; | |
1459 | ||
1460 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1461 | if (!dump_block_ccw) | |
1462 | return -ENOMEM; | |
d91885be | 1463 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1464 | if (rc) { |
1465 | free_page((unsigned long)dump_block_ccw); | |
1466 | return rc; | |
1467 | } | |
1468 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1469 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1470 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1471 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1472 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1473 | return 0; |
1474 | } | |
1475 | ||
ff6b8ea6 MH |
1476 | static int __init dump_fcp_init(void) |
1477 | { | |
1478 | int rc; | |
1479 | ||
05dd2530 | 1480 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1481 | return 0; /* LDIPL DUMP is not installed */ |
1482 | if (!diag308_set_works) | |
1483 | return 0; | |
1484 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1485 | if (!dump_block_fcp) | |
1486 | return -ENOMEM; | |
d91885be | 1487 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1488 | if (rc) { |
1489 | free_page((unsigned long)dump_block_fcp); | |
1490 | return rc; | |
1491 | } | |
1492 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1493 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1494 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1495 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1496 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1497 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1498 | return 0; |
1499 | } | |
1500 | ||
2bc89b5e | 1501 | static int __init dump_init(void) |
ff6b8ea6 MH |
1502 | { |
1503 | int rc; | |
1504 | ||
f62ed9e3 | 1505 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1506 | if (!dump_kset) |
1507 | return -ENOMEM; | |
99ca4e58 | 1508 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1509 | if (rc) { |
d91885be | 1510 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1511 | return rc; |
1512 | } | |
1513 | rc = dump_ccw_init(); | |
1514 | if (rc) | |
1515 | return rc; | |
1516 | rc = dump_fcp_init(); | |
1517 | if (rc) | |
1518 | return rc; | |
411ed322 | 1519 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1520 | return 0; |
1521 | } | |
1522 | ||
2bc89b5e HC |
1523 | static struct shutdown_action __refdata dump_action = { |
1524 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1525 | .fn = dump_run, | |
1526 | .init = dump_init, | |
1527 | }; | |
99ca4e58 | 1528 | |
099b7651 FM |
1529 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1530 | { | |
b43445ff MH |
1531 | u32 csum; |
1532 | ||
1533 | csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); | |
1534 | copy_to_absolute_zero(&S390_lowcore.ipib_checksum, &csum, sizeof(csum)); | |
1535 | copy_to_absolute_zero(&S390_lowcore.ipib, &reipl_block_actual, | |
1536 | sizeof(reipl_block_actual)); | |
099b7651 FM |
1537 | dump_run(trigger); |
1538 | } | |
1539 | ||
1540 | static int __init dump_reipl_init(void) | |
1541 | { | |
1542 | if (!diag308_set_works) | |
1543 | return -EOPNOTSUPP; | |
1544 | else | |
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | static struct shutdown_action __refdata dump_reipl_action = { | |
1549 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1550 | .fn = dump_reipl_run, | |
1551 | .init = dump_reipl_init, | |
1552 | }; | |
1553 | ||
99ca4e58 MH |
1554 | /* |
1555 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1556 | */ | |
1557 | ||
1558 | static char vmcmd_on_reboot[128]; | |
1559 | static char vmcmd_on_panic[128]; | |
1560 | static char vmcmd_on_halt[128]; | |
1561 | static char vmcmd_on_poff[128]; | |
7dd6b334 | 1562 | static char vmcmd_on_restart[128]; |
99ca4e58 MH |
1563 | |
1564 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1565 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1566 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1567 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
7dd6b334 | 1568 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
99ca4e58 MH |
1569 | |
1570 | static struct attribute *vmcmd_attrs[] = { | |
1571 | &sys_vmcmd_on_reboot_attr.attr, | |
1572 | &sys_vmcmd_on_panic_attr.attr, | |
1573 | &sys_vmcmd_on_halt_attr.attr, | |
1574 | &sys_vmcmd_on_poff_attr.attr, | |
7dd6b334 | 1575 | &sys_vmcmd_on_restart_attr.attr, |
99ca4e58 MH |
1576 | NULL, |
1577 | }; | |
1578 | ||
1579 | static struct attribute_group vmcmd_attr_group = { | |
1580 | .attrs = vmcmd_attrs, | |
1581 | }; | |
1582 | ||
1583 | static struct kset *vmcmd_kset; | |
1584 | ||
1585 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1586 | { |
99ca4e58 MH |
1587 | char *cmd, *next_cmd; |
1588 | ||
1589 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1590 | cmd = vmcmd_on_reboot; | |
1591 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1592 | cmd = vmcmd_on_panic; | |
1593 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1594 | cmd = vmcmd_on_halt; | |
1595 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1596 | cmd = vmcmd_on_poff; | |
7dd6b334 MH |
1597 | else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
1598 | cmd = vmcmd_on_restart; | |
99ca4e58 MH |
1599 | else |
1600 | return; | |
1601 | ||
1602 | if (strlen(cmd) == 0) | |
1603 | return; | |
1604 | do { | |
1605 | next_cmd = strchr(cmd, '\n'); | |
1606 | if (next_cmd) { | |
1607 | next_cmd[0] = 0; | |
1608 | next_cmd += 1; | |
1609 | } | |
1610 | __cpcmd(cmd, NULL, 0, NULL); | |
1611 | cmd = next_cmd; | |
1612 | } while (cmd != NULL); | |
1613 | } | |
1614 | ||
1615 | static int vmcmd_init(void) | |
1616 | { | |
1617 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1618 | return -EOPNOTSUPP; |
99ca4e58 MH |
1619 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1620 | if (!vmcmd_kset) | |
1621 | return -ENOMEM; | |
1622 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1623 | } | |
1624 | ||
1625 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1626 | vmcmd_run, vmcmd_init}; | |
1627 | ||
1628 | /* | |
1629 | * stop shutdown action: Stop Linux on shutdown. | |
1630 | */ | |
1631 | ||
1632 | static void stop_run(struct shutdown_trigger *trigger) | |
1633 | { | |
e1202eda MH |
1634 | if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
1635 | strcmp(trigger->name, ON_RESTART_STR) == 0) | |
c6547497 | 1636 | disabled_wait((unsigned long) __builtin_return_address(0)); |
8b646bd7 | 1637 | smp_stop_cpu(); |
99ca4e58 MH |
1638 | } |
1639 | ||
1640 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1641 | stop_run, NULL}; | |
1642 | ||
1643 | /* action list */ | |
1644 | ||
1645 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1646 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1647 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1648 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1649 | ||
1650 | /* | |
1651 | * Trigger section | |
1652 | */ | |
1653 | ||
1654 | static struct kset *shutdown_actions_kset; | |
1655 | ||
1656 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1657 | size_t len) | |
1658 | { | |
1659 | int i; | |
099b7651 | 1660 | |
99ca4e58 | 1661 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1662 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1663 | if (shutdown_actions_list[i]->init_rc) { |
1664 | return shutdown_actions_list[i]->init_rc; | |
1665 | } else { | |
1666 | trigger->action = shutdown_actions_list[i]; | |
1667 | return len; | |
1668 | } | |
99ca4e58 MH |
1669 | } |
1670 | } | |
1671 | return -EINVAL; | |
1672 | } | |
1673 | ||
1674 | /* on reipl */ | |
1675 | ||
1676 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1677 | &reipl_action}; | |
1678 | ||
1679 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1680 | struct kobj_attribute *attr, char *page) | |
1681 | { | |
1682 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1683 | } | |
1684 | ||
1685 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1686 | struct kobj_attribute *attr, | |
1687 | const char *buf, size_t len) | |
1688 | { | |
1689 | return set_trigger(buf, &on_reboot_trigger, len); | |
1690 | } | |
1691 | ||
1692 | static struct kobj_attribute on_reboot_attr = | |
1693 | __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store); | |
1694 | ||
1695 | static void do_machine_restart(char *__unused) | |
1696 | { | |
1697 | smp_send_stop(); | |
1698 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1699 | reipl_run(NULL); | |
1700 | } | |
1701 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1702 | ||
1703 | /* on panic */ | |
1704 | ||
1705 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1706 | ||
1707 | static ssize_t on_panic_show(struct kobject *kobj, | |
1708 | struct kobj_attribute *attr, char *page) | |
1709 | { | |
1710 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1711 | } | |
1712 | ||
1713 | static ssize_t on_panic_store(struct kobject *kobj, | |
1714 | struct kobj_attribute *attr, | |
1715 | const char *buf, size_t len) | |
1716 | { | |
1717 | return set_trigger(buf, &on_panic_trigger, len); | |
1718 | } | |
1719 | ||
1720 | static struct kobj_attribute on_panic_attr = | |
1721 | __ATTR(on_panic, 0644, on_panic_show, on_panic_store); | |
1722 | ||
1723 | static void do_panic(void) | |
1724 | { | |
3ab121ab | 1725 | lgr_info_log(); |
99ca4e58 MH |
1726 | on_panic_trigger.action->fn(&on_panic_trigger); |
1727 | stop_run(&on_panic_trigger); | |
1728 | } | |
1729 | ||
7dd6b334 MH |
1730 | /* on restart */ |
1731 | ||
1732 | static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, | |
e1202eda | 1733 | &stop_action}; |
7dd6b334 MH |
1734 | |
1735 | static ssize_t on_restart_show(struct kobject *kobj, | |
1736 | struct kobj_attribute *attr, char *page) | |
1737 | { | |
1738 | return sprintf(page, "%s\n", on_restart_trigger.action->name); | |
1739 | } | |
1740 | ||
1741 | static ssize_t on_restart_store(struct kobject *kobj, | |
1742 | struct kobj_attribute *attr, | |
1743 | const char *buf, size_t len) | |
1744 | { | |
1745 | return set_trigger(buf, &on_restart_trigger, len); | |
1746 | } | |
1747 | ||
1748 | static struct kobj_attribute on_restart_attr = | |
1749 | __ATTR(on_restart, 0644, on_restart_show, on_restart_store); | |
1750 | ||
8b646bd7 | 1751 | static void __do_restart(void *ignore) |
7dd6b334 | 1752 | { |
fa7c0043 | 1753 | __arch_local_irq_stosm(0x04); /* enable DAT */ |
7dd6b334 | 1754 | smp_send_stop(); |
60a0c68d MH |
1755 | #ifdef CONFIG_CRASH_DUMP |
1756 | crash_kexec(NULL); | |
1757 | #endif | |
7dd6b334 MH |
1758 | on_restart_trigger.action->fn(&on_restart_trigger); |
1759 | stop_run(&on_restart_trigger); | |
1760 | } | |
1761 | ||
8b646bd7 MS |
1762 | void do_restart(void) |
1763 | { | |
3ab121ab MH |
1764 | tracing_off(); |
1765 | debug_locks_off(); | |
1766 | lgr_info_log(); | |
8b646bd7 MS |
1767 | smp_call_online_cpu(__do_restart, NULL); |
1768 | } | |
1769 | ||
99ca4e58 MH |
1770 | /* on halt */ |
1771 | ||
1772 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1773 | ||
1774 | static ssize_t on_halt_show(struct kobject *kobj, | |
1775 | struct kobj_attribute *attr, char *page) | |
1776 | { | |
1777 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1778 | } | |
1779 | ||
1780 | static ssize_t on_halt_store(struct kobject *kobj, | |
1781 | struct kobj_attribute *attr, | |
1782 | const char *buf, size_t len) | |
1783 | { | |
1784 | return set_trigger(buf, &on_halt_trigger, len); | |
1785 | } | |
1786 | ||
1787 | static struct kobj_attribute on_halt_attr = | |
1788 | __ATTR(on_halt, 0644, on_halt_show, on_halt_store); | |
ff6b8ea6 | 1789 | |
99ca4e58 MH |
1790 | |
1791 | static void do_machine_halt(void) | |
1792 | { | |
1793 | smp_send_stop(); | |
1794 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1795 | stop_run(&on_halt_trigger); | |
1796 | } | |
1797 | void (*_machine_halt)(void) = do_machine_halt; | |
1798 | ||
1799 | /* on power off */ | |
1800 | ||
1801 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1802 | ||
1803 | static ssize_t on_poff_show(struct kobject *kobj, | |
1804 | struct kobj_attribute *attr, char *page) | |
1805 | { | |
1806 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1807 | } | |
1808 | ||
1809 | static ssize_t on_poff_store(struct kobject *kobj, | |
1810 | struct kobj_attribute *attr, | |
1811 | const char *buf, size_t len) | |
1812 | { | |
1813 | return set_trigger(buf, &on_poff_trigger, len); | |
1814 | } | |
1815 | ||
1816 | static struct kobj_attribute on_poff_attr = | |
1817 | __ATTR(on_poff, 0644, on_poff_show, on_poff_store); | |
1818 | ||
1819 | ||
1820 | static void do_machine_power_off(void) | |
1821 | { | |
1822 | smp_send_stop(); | |
1823 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1824 | stop_run(&on_poff_trigger); | |
1825 | } | |
1826 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1827 | ||
1828 | static void __init shutdown_triggers_init(void) | |
1829 | { | |
d91885be | 1830 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1831 | firmware_kobj); |
d91885be | 1832 | if (!shutdown_actions_kset) |
99ca4e58 MH |
1833 | goto fail; |
1834 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1835 | &on_reboot_attr.attr)) | |
1836 | goto fail; | |
1837 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1838 | &on_panic_attr.attr)) | |
1839 | goto fail; | |
1840 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1841 | &on_halt_attr.attr)) | |
1842 | goto fail; | |
1843 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1844 | &on_poff_attr.attr)) | |
1845 | goto fail; | |
7dd6b334 MH |
1846 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
1847 | &on_restart_attr.attr)) | |
1848 | goto fail; | |
99ca4e58 MH |
1849 | return; |
1850 | fail: | |
1851 | panic("shutdown_triggers_init failed\n"); | |
1852 | } | |
1853 | ||
1854 | static void __init shutdown_actions_init(void) | |
1855 | { | |
1856 | int i; | |
1857 | ||
1858 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1859 | if (!shutdown_actions_list[i]->init) | |
1860 | continue; | |
81088819 FM |
1861 | shutdown_actions_list[i]->init_rc = |
1862 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1863 | } |
ff6b8ea6 MH |
1864 | } |
1865 | ||
1866 | static int __init s390_ipl_init(void) | |
1867 | { | |
d09293ae | 1868 | sclp_get_ipl_info(&sclp_ipl_info); |
99ca4e58 MH |
1869 | shutdown_actions_init(); |
1870 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1871 | return 0; |
1872 | } | |
1873 | ||
1874 | __initcall(s390_ipl_init); | |
15e9b586 | 1875 | |
99ca4e58 MH |
1876 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1877 | { | |
1878 | int sx, dx; | |
1879 | ||
1880 | dx = 0; | |
1881 | for (sx = 0; src[sx] != 0; sx++) { | |
1882 | if (src[sx] == '"') | |
1883 | continue; | |
1884 | dst[dx++] = src[sx]; | |
1885 | if (dx >= n) | |
1886 | break; | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | static int __init vmcmd_on_reboot_setup(char *str) | |
1891 | { | |
1892 | if (!MACHINE_IS_VM) | |
1893 | return 1; | |
1894 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1895 | vmcmd_on_reboot[127] = 0; | |
1896 | on_reboot_trigger.action = &vmcmd_action; | |
1897 | return 1; | |
1898 | } | |
1899 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1900 | ||
1901 | static int __init vmcmd_on_panic_setup(char *str) | |
1902 | { | |
1903 | if (!MACHINE_IS_VM) | |
1904 | return 1; | |
1905 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1906 | vmcmd_on_panic[127] = 0; | |
1907 | on_panic_trigger.action = &vmcmd_action; | |
1908 | return 1; | |
1909 | } | |
1910 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1911 | ||
1912 | static int __init vmcmd_on_halt_setup(char *str) | |
1913 | { | |
1914 | if (!MACHINE_IS_VM) | |
1915 | return 1; | |
1916 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1917 | vmcmd_on_halt[127] = 0; | |
1918 | on_halt_trigger.action = &vmcmd_action; | |
1919 | return 1; | |
1920 | } | |
1921 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1922 | ||
1923 | static int __init vmcmd_on_poff_setup(char *str) | |
1924 | { | |
1925 | if (!MACHINE_IS_VM) | |
1926 | return 1; | |
1927 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1928 | vmcmd_on_poff[127] = 0; | |
1929 | on_poff_trigger.action = &vmcmd_action; | |
1930 | return 1; | |
1931 | } | |
1932 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1933 | ||
1934 | static int on_panic_notify(struct notifier_block *self, | |
1935 | unsigned long event, void *data) | |
1936 | { | |
1937 | do_panic(); | |
1938 | return NOTIFY_OK; | |
1939 | } | |
1940 | ||
1941 | static struct notifier_block on_panic_nb = { | |
1942 | .notifier_call = on_panic_notify, | |
7e9b580e | 1943 | .priority = INT_MIN, |
99ca4e58 MH |
1944 | }; |
1945 | ||
1946 | void __init setup_ipl(void) | |
1947 | { | |
1948 | ipl_info.type = get_ipl_type(); | |
1949 | switch (ipl_info.type) { | |
1950 | case IPL_TYPE_CCW: | |
1951 | ipl_info.data.ccw.dev_id.devno = ipl_devno; | |
1952 | ipl_info.data.ccw.dev_id.ssid = 0; | |
1953 | break; | |
1954 | case IPL_TYPE_FCP: | |
1955 | case IPL_TYPE_FCP_DUMP: | |
1956 | ipl_info.data.fcp.dev_id.devno = | |
1957 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
1958 | ipl_info.data.fcp.dev_id.ssid = 0; | |
1959 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; | |
1960 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1961 | break; | |
1962 | case IPL_TYPE_NSS: | |
1963 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1964 | sizeof(ipl_info.data.nss.name)); | |
1965 | break; | |
1966 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1967 | /* We have no info to copy */ |
1968 | break; | |
1969 | } | |
1970 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1971 | } | |
1972 | ||
a0443fbb HB |
1973 | void __init ipl_update_parameters(void) |
1974 | { | |
3a95e8eb MH |
1975 | int rc; |
1976 | ||
1977 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1978 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1979 | diag308_set_works = 1; |
1980 | } | |
1981 | ||
6fc321fd HC |
1982 | void __init ipl_save_parameters(void) |
1983 | { | |
1984 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1985 | void *src, *dst; |
1986 | ||
1987 | if (cio_get_iplinfo(&iplinfo)) | |
1988 | return; | |
1989 | ||
1990 | ipl_devno = iplinfo.devno; | |
1991 | ipl_flags |= IPL_DEVNO_VALID; | |
1992 | if (!iplinfo.is_qdio) | |
1993 | return; | |
1994 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
cbb870c8 | 1995 | src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr; |
6fc321fd HC |
1996 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
1997 | memmove(dst, src, PAGE_SIZE); | |
cbb870c8 | 1998 | S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN; |
6fc321fd HC |
1999 | } |
2000 | ||
15e9b586 HC |
2001 | static LIST_HEAD(rcall); |
2002 | static DEFINE_MUTEX(rcall_mutex); | |
2003 | ||
2004 | void register_reset_call(struct reset_call *reset) | |
2005 | { | |
2006 | mutex_lock(&rcall_mutex); | |
2007 | list_add(&reset->list, &rcall); | |
2008 | mutex_unlock(&rcall_mutex); | |
2009 | } | |
2010 | EXPORT_SYMBOL_GPL(register_reset_call); | |
2011 | ||
2012 | void unregister_reset_call(struct reset_call *reset) | |
2013 | { | |
2014 | mutex_lock(&rcall_mutex); | |
2015 | list_del(&reset->list); | |
2016 | mutex_unlock(&rcall_mutex); | |
2017 | } | |
2018 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
2019 | ||
2020 | static void do_reset_calls(void) | |
2021 | { | |
2022 | struct reset_call *reset; | |
2023 | ||
9dc7356e MH |
2024 | #ifdef CONFIG_64BIT |
2025 | if (diag308_set_works) { | |
2026 | diag308_reset(); | |
2027 | return; | |
2028 | } | |
2029 | #endif | |
15e9b586 HC |
2030 | list_for_each_entry(reset, &rcall, list) |
2031 | reset->fn(); | |
2032 | } | |
2033 | ||
c5dd8586 | 2034 | u32 dump_prefix_page; |
15e9b586 | 2035 | |
60a0c68d | 2036 | void s390_reset_system(void (*func)(void *), void *data) |
15e9b586 HC |
2037 | { |
2038 | struct _lowcore *lc; | |
2039 | ||
15e9b586 | 2040 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
2041 | |
2042 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
2043 | lc->panic_stack = S390_lowcore.panic_stack; |
2044 | ||
da1cf23e | 2045 | /* Save prefix page address for dump case */ |
c5dd8586 | 2046 | dump_prefix_page = (u32)(unsigned long) lc; |
da1cf23e | 2047 | |
15e9b586 HC |
2048 | /* Disable prefixing */ |
2049 | set_prefix(0); | |
2050 | ||
2051 | /* Disable lowcore protection */ | |
2052 | __ctl_clear_bit(0,28); | |
2053 | ||
2054 | /* Set new machine check handler */ | |
b50511e4 | 2055 | S390_lowcore.mcck_new_psw.mask = psw_kernel_bits | PSW_MASK_DAT; |
15e9b586 | 2056 | S390_lowcore.mcck_new_psw.addr = |
ab14de6c | 2057 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
2058 | |
2059 | /* Set new program check handler */ | |
b50511e4 | 2060 | S390_lowcore.program_new_psw.mask = psw_kernel_bits | PSW_MASK_DAT; |
a45e1414 | 2061 | S390_lowcore.program_new_psw.addr = |
ab14de6c | 2062 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 2063 | |
60a0c68d MH |
2064 | /* Store status at absolute zero */ |
2065 | store_status(); | |
2066 | ||
15e9b586 | 2067 | do_reset_calls(); |
60a0c68d MH |
2068 | if (func) |
2069 | func(data); | |
15e9b586 | 2070 | } |