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Commit | Line | Data |
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ff6b8ea6 | 1 | /* |
ff6b8ea6 MH |
2 | * ipl/reipl/dump support for Linux on s390. |
3 | * | |
a53c8fab | 4 | * Copyright IBM Corp. 2005, 2012 |
ff6b8ea6 MH |
5 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
6 | * Heiko Carstens <heiko.carstens@de.ibm.com> | |
7 | * Volker Sameske <sameske@de.ibm.com> | |
8 | */ | |
9 | ||
10 | #include <linux/types.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/reboot.h> | |
03a4d208 | 15 | #include <linux/ctype.h> |
0788fea4 | 16 | #include <linux/fs.h> |
5a0e3ad6 | 17 | #include <linux/gfp.h> |
60a0c68d | 18 | #include <linux/crash_dump.h> |
3ab121ab | 19 | #include <linux/debug_locks.h> |
46b05d26 | 20 | #include <asm/ipl.h> |
ff6b8ea6 MH |
21 | #include <asm/smp.h> |
22 | #include <asm/setup.h> | |
23 | #include <asm/cpcmd.h> | |
24 | #include <asm/cio.h> | |
03a4d208 | 25 | #include <asm/ebcdic.h> |
15e9b586 | 26 | #include <asm/reset.h> |
ab14de6c | 27 | #include <asm/sclp.h> |
159d1ff8 | 28 | #include <asm/checksum.h> |
3ab121ab | 29 | #include <asm/debug.h> |
4857d4bb | 30 | #include <asm/os_info.h> |
638ad34a | 31 | #include "entry.h" |
ff6b8ea6 MH |
32 | |
33 | #define IPL_PARM_BLOCK_VERSION 0 | |
03a4d208 | 34 | |
411ed322 MH |
35 | #define IPL_UNKNOWN_STR "unknown" |
36 | #define IPL_CCW_STR "ccw" | |
37 | #define IPL_FCP_STR "fcp" | |
38 | #define IPL_FCP_DUMP_STR "fcp_dump" | |
39 | #define IPL_NSS_STR "nss" | |
615b04b3 | 40 | |
99ca4e58 MH |
41 | #define DUMP_CCW_STR "ccw" |
42 | #define DUMP_FCP_STR "fcp" | |
43 | #define DUMP_NONE_STR "none" | |
44 | ||
45 | /* | |
46 | * Four shutdown trigger types are supported: | |
47 | * - panic | |
48 | * - halt | |
49 | * - power off | |
50 | * - reipl | |
7dd6b334 | 51 | * - restart |
99ca4e58 MH |
52 | */ |
53 | #define ON_PANIC_STR "on_panic" | |
54 | #define ON_HALT_STR "on_halt" | |
55 | #define ON_POFF_STR "on_poff" | |
56 | #define ON_REIPL_STR "on_reboot" | |
7dd6b334 | 57 | #define ON_RESTART_STR "on_restart" |
99ca4e58 MH |
58 | |
59 | struct shutdown_action; | |
60 | struct shutdown_trigger { | |
61 | char *name; | |
62 | struct shutdown_action *action; | |
63 | }; | |
64 | ||
65 | /* | |
099b7651 | 66 | * The following shutdown action types are supported: |
99ca4e58 MH |
67 | */ |
68 | #define SHUTDOWN_ACTION_IPL_STR "ipl" | |
69 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" | |
70 | #define SHUTDOWN_ACTION_DUMP_STR "dump" | |
71 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" | |
72 | #define SHUTDOWN_ACTION_STOP_STR "stop" | |
099b7651 | 73 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
99ca4e58 MH |
74 | |
75 | struct shutdown_action { | |
76 | char *name; | |
77 | void (*fn) (struct shutdown_trigger *trigger); | |
78 | int (*init) (void); | |
81088819 | 79 | int init_rc; |
99ca4e58 MH |
80 | }; |
81 | ||
ff6b8ea6 MH |
82 | static char *ipl_type_str(enum ipl_type type) |
83 | { | |
84 | switch (type) { | |
ff6b8ea6 MH |
85 | case IPL_TYPE_CCW: |
86 | return IPL_CCW_STR; | |
87 | case IPL_TYPE_FCP: | |
88 | return IPL_FCP_STR; | |
411ed322 MH |
89 | case IPL_TYPE_FCP_DUMP: |
90 | return IPL_FCP_DUMP_STR; | |
fe355b7f HY |
91 | case IPL_TYPE_NSS: |
92 | return IPL_NSS_STR; | |
ff6b8ea6 MH |
93 | case IPL_TYPE_UNKNOWN: |
94 | default: | |
95 | return IPL_UNKNOWN_STR; | |
96 | } | |
97 | } | |
98 | ||
411ed322 MH |
99 | enum dump_type { |
100 | DUMP_TYPE_NONE = 1, | |
101 | DUMP_TYPE_CCW = 2, | |
102 | DUMP_TYPE_FCP = 4, | |
103 | }; | |
104 | ||
411ed322 MH |
105 | static char *dump_type_str(enum dump_type type) |
106 | { | |
107 | switch (type) { | |
108 | case DUMP_TYPE_NONE: | |
109 | return DUMP_NONE_STR; | |
110 | case DUMP_TYPE_CCW: | |
111 | return DUMP_CCW_STR; | |
112 | case DUMP_TYPE_FCP: | |
113 | return DUMP_FCP_STR; | |
114 | default: | |
115 | return NULL; | |
116 | } | |
117 | } | |
118 | ||
119 | /* | |
120 | * Must be in data section since the bss section | |
121 | * is not cleared when these are accessed. | |
122 | */ | |
123 | static u16 ipl_devno __attribute__((__section__(".data"))) = 0; | |
124 | u32 ipl_flags __attribute__((__section__(".data"))) = 0; | |
125 | ||
ff6b8ea6 | 126 | enum ipl_method { |
411ed322 MH |
127 | REIPL_METHOD_CCW_CIO, |
128 | REIPL_METHOD_CCW_DIAG, | |
129 | REIPL_METHOD_CCW_VM, | |
130 | REIPL_METHOD_FCP_RO_DIAG, | |
131 | REIPL_METHOD_FCP_RW_DIAG, | |
132 | REIPL_METHOD_FCP_RO_VM, | |
133 | REIPL_METHOD_FCP_DUMP, | |
134 | REIPL_METHOD_NSS, | |
a0443fbb | 135 | REIPL_METHOD_NSS_DIAG, |
411ed322 MH |
136 | REIPL_METHOD_DEFAULT, |
137 | }; | |
138 | ||
139 | enum dump_method { | |
140 | DUMP_METHOD_NONE, | |
141 | DUMP_METHOD_CCW_CIO, | |
142 | DUMP_METHOD_CCW_DIAG, | |
143 | DUMP_METHOD_CCW_VM, | |
144 | DUMP_METHOD_FCP_DIAG, | |
ff6b8ea6 MH |
145 | }; |
146 | ||
ff6b8ea6 MH |
147 | static int diag308_set_works = 0; |
148 | ||
a0443fbb HB |
149 | static struct ipl_parameter_block ipl_block; |
150 | ||
ff6b8ea6 | 151 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
fe355b7f | 152 | |
ff6b8ea6 | 153 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
411ed322 | 154 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
ff6b8ea6 MH |
155 | static struct ipl_parameter_block *reipl_block_fcp; |
156 | static struct ipl_parameter_block *reipl_block_ccw; | |
a0443fbb | 157 | static struct ipl_parameter_block *reipl_block_nss; |
099b7651 | 158 | static struct ipl_parameter_block *reipl_block_actual; |
fe355b7f | 159 | |
411ed322 MH |
160 | static int dump_capabilities = DUMP_TYPE_NONE; |
161 | static enum dump_type dump_type = DUMP_TYPE_NONE; | |
162 | static enum dump_method dump_method = DUMP_METHOD_NONE; | |
ff6b8ea6 MH |
163 | static struct ipl_parameter_block *dump_block_fcp; |
164 | static struct ipl_parameter_block *dump_block_ccw; | |
165 | ||
05dd2530 HC |
166 | static struct sclp_ipl_info sclp_ipl_info; |
167 | ||
46b05d26 | 168 | int diag308(unsigned long subcode, void *addr) |
ff6b8ea6 | 169 | { |
94c12cc7 | 170 | register unsigned long _addr asm("0") = (unsigned long) addr; |
ff6b8ea6 MH |
171 | register unsigned long _rc asm("1") = 0; |
172 | ||
94c12cc7 MS |
173 | asm volatile( |
174 | " diag %0,%2,0x308\n" | |
175 | "0:\n" | |
176 | EX_TABLE(0b,0b) | |
ff6b8ea6 | 177 | : "+d" (_addr), "+d" (_rc) |
94c12cc7 | 178 | : "d" (subcode) : "cc", "memory"); |
ff6b8ea6 MH |
179 | return _rc; |
180 | } | |
411ed322 | 181 | EXPORT_SYMBOL_GPL(diag308); |
ff6b8ea6 MH |
182 | |
183 | /* SYSFS */ | |
184 | ||
185 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ | |
9b949165 GKH |
186 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
187 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
188 | char *page) \ |
189 | { \ | |
190 | return sprintf(page, _format, _value); \ | |
191 | } \ | |
9b949165 | 192 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
193 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL); |
194 | ||
195 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ | |
9b949165 GKH |
196 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
197 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
198 | char *page) \ |
199 | { \ | |
200 | return sprintf(page, _fmt_out, \ | |
201 | (unsigned long long) _value); \ | |
202 | } \ | |
9b949165 GKH |
203 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
204 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
205 | const char *buf, size_t len) \ |
206 | { \ | |
207 | unsigned long long value; \ | |
208 | if (sscanf(buf, _fmt_in, &value) != 1) \ | |
209 | return -EINVAL; \ | |
210 | _value = value; \ | |
211 | return len; \ | |
212 | } \ | |
9b949165 | 213 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
214 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
215 | sys_##_prefix##_##_name##_show, \ | |
216 | sys_##_prefix##_##_name##_store); | |
217 | ||
fe355b7f | 218 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
9b949165 GKH |
219 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
220 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
221 | char *page) \ |
222 | { \ | |
223 | return sprintf(page, _fmt_out, _value); \ | |
224 | } \ | |
9b949165 GKH |
225 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
226 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
227 | const char *buf, size_t len) \ |
228 | { \ | |
99ca4e58 | 229 | strncpy(_value, buf, sizeof(_value) - 1); \ |
1d802e24 | 230 | strim(_value); \ |
fe355b7f HY |
231 | return len; \ |
232 | } \ | |
9b949165 | 233 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
fe355b7f HY |
234 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
235 | sys_##_prefix##_##_name##_show, \ | |
236 | sys_##_prefix##_##_name##_store); | |
237 | ||
ff6b8ea6 MH |
238 | static void make_attrs_ro(struct attribute **attrs) |
239 | { | |
240 | while (*attrs) { | |
241 | (*attrs)->mode = S_IRUGO; | |
242 | attrs++; | |
243 | } | |
244 | } | |
245 | ||
246 | /* | |
247 | * ipl section | |
248 | */ | |
249 | ||
411ed322 | 250 | static __init enum ipl_type get_ipl_type(void) |
ff6b8ea6 MH |
251 | { |
252 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
253 | ||
fe355b7f HY |
254 | if (ipl_flags & IPL_NSS_VALID) |
255 | return IPL_TYPE_NSS; | |
e87bfe51 | 256 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
ff6b8ea6 | 257 | return IPL_TYPE_UNKNOWN; |
e87bfe51 | 258 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
ff6b8ea6 MH |
259 | return IPL_TYPE_CCW; |
260 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) | |
261 | return IPL_TYPE_UNKNOWN; | |
262 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) | |
263 | return IPL_TYPE_UNKNOWN; | |
411ed322 MH |
264 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
265 | return IPL_TYPE_FCP_DUMP; | |
ff6b8ea6 MH |
266 | return IPL_TYPE_FCP; |
267 | } | |
268 | ||
411ed322 MH |
269 | struct ipl_info ipl_info; |
270 | EXPORT_SYMBOL_GPL(ipl_info); | |
271 | ||
9b949165 GKH |
272 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
273 | char *page) | |
ff6b8ea6 | 274 | { |
411ed322 | 275 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
ff6b8ea6 MH |
276 | } |
277 | ||
9b949165 | 278 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
ff6b8ea6 | 279 | |
a0443fbb | 280 | /* VM IPL PARM routines */ |
c4736d96 MS |
281 | static size_t reipl_get_ascii_vmparm(char *dest, size_t size, |
282 | const struct ipl_parameter_block *ipb) | |
a0443fbb HB |
283 | { |
284 | int i; | |
684d2fd4 | 285 | size_t len; |
a0443fbb HB |
286 | char has_lowercase = 0; |
287 | ||
684d2fd4 | 288 | len = 0; |
a0443fbb HB |
289 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
290 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { | |
291 | ||
684d2fd4 | 292 | len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len); |
a0443fbb HB |
293 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
294 | /* If at least one character is lowercase, we assume mixed | |
295 | * case; otherwise we convert everything to lowercase. | |
296 | */ | |
297 | for (i = 0; i < len; i++) | |
298 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ | |
299 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ | |
300 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ | |
301 | has_lowercase = 1; | |
302 | break; | |
303 | } | |
304 | if (!has_lowercase) | |
305 | EBC_TOLOWER(dest, len); | |
306 | EBCASC(dest, len); | |
307 | } | |
308 | dest[len] = 0; | |
684d2fd4 HB |
309 | |
310 | return len; | |
a0443fbb HB |
311 | } |
312 | ||
684d2fd4 | 313 | size_t append_ipl_vmparm(char *dest, size_t size) |
a0443fbb | 314 | { |
684d2fd4 HB |
315 | size_t rc; |
316 | ||
317 | rc = 0; | |
a0443fbb | 318 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
684d2fd4 | 319 | rc = reipl_get_ascii_vmparm(dest, size, &ipl_block); |
a0443fbb HB |
320 | else |
321 | dest[0] = 0; | |
684d2fd4 | 322 | return rc; |
a0443fbb HB |
323 | } |
324 | ||
325 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, | |
326 | struct kobj_attribute *attr, char *page) | |
327 | { | |
328 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; | |
329 | ||
684d2fd4 | 330 | append_ipl_vmparm(parm, sizeof(parm)); |
a0443fbb HB |
331 | return sprintf(page, "%s\n", parm); |
332 | } | |
333 | ||
684d2fd4 HB |
334 | static size_t scpdata_length(const char* buf, size_t count) |
335 | { | |
336 | while (count) { | |
337 | if (buf[count - 1] != '\0' && buf[count - 1] != ' ') | |
338 | break; | |
339 | count--; | |
340 | } | |
341 | return count; | |
342 | } | |
343 | ||
c4736d96 MS |
344 | static size_t reipl_append_ascii_scpdata(char *dest, size_t size, |
345 | const struct ipl_parameter_block *ipb) | |
684d2fd4 HB |
346 | { |
347 | size_t count; | |
348 | size_t i; | |
18d00acf | 349 | int has_lowercase; |
684d2fd4 HB |
350 | |
351 | count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data, | |
352 | ipb->ipl_info.fcp.scp_data_len)); | |
353 | if (!count) | |
354 | goto out; | |
355 | ||
18d00acf HB |
356 | has_lowercase = 0; |
357 | for (i = 0; i < count; i++) { | |
684d2fd4 HB |
358 | if (!isascii(ipb->ipl_info.fcp.scp_data[i])) { |
359 | count = 0; | |
360 | goto out; | |
361 | } | |
18d00acf HB |
362 | if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i])) |
363 | has_lowercase = 1; | |
364 | } | |
684d2fd4 | 365 | |
18d00acf HB |
366 | if (has_lowercase) |
367 | memcpy(dest, ipb->ipl_info.fcp.scp_data, count); | |
368 | else | |
369 | for (i = 0; i < count; i++) | |
370 | dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]); | |
684d2fd4 HB |
371 | out: |
372 | dest[count] = '\0'; | |
373 | return count; | |
374 | } | |
375 | ||
376 | size_t append_ipl_scpdata(char *dest, size_t len) | |
377 | { | |
378 | size_t rc; | |
379 | ||
380 | rc = 0; | |
381 | if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP) | |
382 | rc = reipl_append_ascii_scpdata(dest, len, &ipl_block); | |
383 | else | |
384 | dest[0] = 0; | |
385 | return rc; | |
386 | } | |
387 | ||
388 | ||
a0443fbb HB |
389 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
390 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); | |
391 | ||
9b949165 GKH |
392 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
393 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
394 | { |
395 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
396 | ||
411ed322 | 397 | switch (ipl_info.type) { |
ff6b8ea6 MH |
398 | case IPL_TYPE_CCW: |
399 | return sprintf(page, "0.0.%04x\n", ipl_devno); | |
400 | case IPL_TYPE_FCP: | |
411ed322 | 401 | case IPL_TYPE_FCP_DUMP: |
ff6b8ea6 MH |
402 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
403 | default: | |
404 | return 0; | |
405 | } | |
406 | } | |
407 | ||
9b949165 | 408 | static struct kobj_attribute sys_ipl_device_attr = |
ff6b8ea6 MH |
409 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
410 | ||
2c3c8bea CW |
411 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
412 | struct bin_attribute *attr, char *buf, | |
413 | loff_t off, size_t count) | |
ff6b8ea6 | 414 | { |
0788fea4 AM |
415 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
416 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 MH |
417 | } |
418 | ||
419 | static struct bin_attribute ipl_parameter_attr = { | |
420 | .attr = { | |
421 | .name = "binary_parameter", | |
422 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
423 | }, |
424 | .size = PAGE_SIZE, | |
425 | .read = &ipl_parameter_read, | |
426 | }; | |
427 | ||
2c3c8bea CW |
428 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
429 | struct bin_attribute *attr, char *buf, | |
430 | loff_t off, size_t count) | |
ff6b8ea6 MH |
431 | { |
432 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
433 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
434 | ||
0788fea4 | 435 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 MH |
436 | } |
437 | ||
438 | static struct bin_attribute ipl_scp_data_attr = { | |
439 | .attr = { | |
440 | .name = "scp_data", | |
441 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
442 | }, |
443 | .size = PAGE_SIZE, | |
05bd711e | 444 | .read = ipl_scp_data_read, |
ff6b8ea6 MH |
445 | }; |
446 | ||
447 | /* FCP ipl device attributes */ | |
448 | ||
449 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
450 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
451 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
452 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
453 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
454 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
455 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
456 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
457 | ||
458 | static struct attribute *ipl_fcp_attrs[] = { | |
459 | &sys_ipl_type_attr.attr, | |
460 | &sys_ipl_device_attr.attr, | |
461 | &sys_ipl_fcp_wwpn_attr.attr, | |
462 | &sys_ipl_fcp_lun_attr.attr, | |
463 | &sys_ipl_fcp_bootprog_attr.attr, | |
464 | &sys_ipl_fcp_br_lba_attr.attr, | |
465 | NULL, | |
466 | }; | |
467 | ||
468 | static struct attribute_group ipl_fcp_attr_group = { | |
469 | .attrs = ipl_fcp_attrs, | |
470 | }; | |
471 | ||
472 | /* CCW ipl device attributes */ | |
473 | ||
9b949165 GKH |
474 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
475 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
476 | { |
477 | char loadparm[LOADPARM_LEN + 1] = {}; | |
478 | ||
05dd2530 | 479 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 480 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 481 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 482 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 483 | strim(loadparm); |
03a4d208 MH |
484 | return sprintf(page, "%s\n", loadparm); |
485 | } | |
486 | ||
9b949165 | 487 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
488 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
489 | ||
a0443fbb HB |
490 | static struct attribute *ipl_ccw_attrs_vm[] = { |
491 | &sys_ipl_type_attr.attr, | |
492 | &sys_ipl_device_attr.attr, | |
493 | &sys_ipl_ccw_loadparm_attr.attr, | |
494 | &sys_ipl_vm_parm_attr.attr, | |
495 | NULL, | |
496 | }; | |
497 | ||
498 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
499 | &sys_ipl_type_attr.attr, |
500 | &sys_ipl_device_attr.attr, | |
03a4d208 | 501 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
502 | NULL, |
503 | }; | |
504 | ||
a0443fbb HB |
505 | static struct attribute_group ipl_ccw_attr_group_vm = { |
506 | .attrs = ipl_ccw_attrs_vm, | |
507 | }; | |
508 | ||
509 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
510 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
511 | }; |
512 | ||
fe355b7f HY |
513 | /* NSS ipl device attributes */ |
514 | ||
515 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
516 | ||
517 | static struct attribute *ipl_nss_attrs[] = { | |
518 | &sys_ipl_type_attr.attr, | |
519 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
520 | &sys_ipl_ccw_loadparm_attr.attr, |
521 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
522 | NULL, |
523 | }; | |
524 | ||
525 | static struct attribute_group ipl_nss_attr_group = { | |
526 | .attrs = ipl_nss_attrs, | |
527 | }; | |
528 | ||
ff6b8ea6 MH |
529 | /* UNKNOWN ipl device attributes */ |
530 | ||
531 | static struct attribute *ipl_unknown_attrs[] = { | |
532 | &sys_ipl_type_attr.attr, | |
533 | NULL, | |
534 | }; | |
535 | ||
536 | static struct attribute_group ipl_unknown_attr_group = { | |
537 | .attrs = ipl_unknown_attrs, | |
538 | }; | |
539 | ||
d91885be | 540 | static struct kset *ipl_kset; |
ff6b8ea6 | 541 | |
99ca4e58 MH |
542 | static int __init ipl_register_fcp_files(void) |
543 | { | |
544 | int rc; | |
545 | ||
546 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
547 | if (rc) | |
548 | goto out; | |
549 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
550 | if (rc) | |
551 | goto out_ipl_parm; | |
552 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr); | |
553 | if (!rc) | |
554 | goto out; | |
555 | ||
556 | sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
557 | ||
558 | out_ipl_parm: | |
559 | sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
560 | out: | |
561 | return rc; | |
562 | } | |
563 | ||
2c2df118 | 564 | static void __ipl_run(void *unused) |
99ca4e58 MH |
565 | { |
566 | diag308(DIAG308_IPL, NULL); | |
567 | if (MACHINE_IS_VM) | |
568 | __cpcmd("IPL", NULL, 0, NULL); | |
569 | else if (ipl_info.type == IPL_TYPE_CCW) | |
570 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
571 | } | |
572 | ||
2c2df118 HC |
573 | static void ipl_run(struct shutdown_trigger *trigger) |
574 | { | |
8b646bd7 | 575 | smp_call_ipl_cpu(__ipl_run, NULL); |
2c2df118 HC |
576 | } |
577 | ||
2bc89b5e | 578 | static int __init ipl_init(void) |
99ca4e58 MH |
579 | { |
580 | int rc; | |
581 | ||
582 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
583 | if (!ipl_kset) { | |
584 | rc = -ENOMEM; | |
585 | goto out; | |
586 | } | |
587 | switch (ipl_info.type) { | |
588 | case IPL_TYPE_CCW: | |
a0443fbb HB |
589 | if (MACHINE_IS_VM) |
590 | rc = sysfs_create_group(&ipl_kset->kobj, | |
591 | &ipl_ccw_attr_group_vm); | |
592 | else | |
593 | rc = sysfs_create_group(&ipl_kset->kobj, | |
594 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
595 | break; |
596 | case IPL_TYPE_FCP: | |
597 | case IPL_TYPE_FCP_DUMP: | |
598 | rc = ipl_register_fcp_files(); | |
599 | break; | |
600 | case IPL_TYPE_NSS: | |
601 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
602 | break; | |
603 | default: | |
604 | rc = sysfs_create_group(&ipl_kset->kobj, | |
605 | &ipl_unknown_attr_group); | |
606 | break; | |
607 | } | |
608 | out: | |
609 | if (rc) | |
610 | panic("ipl_init failed: rc = %i\n", rc); | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
2bc89b5e HC |
615 | static struct shutdown_action __refdata ipl_action = { |
616 | .name = SHUTDOWN_ACTION_IPL_STR, | |
617 | .fn = ipl_run, | |
618 | .init = ipl_init, | |
619 | }; | |
99ca4e58 | 620 | |
ff6b8ea6 | 621 | /* |
99ca4e58 | 622 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
623 | */ |
624 | ||
a0443fbb HB |
625 | /* VM IPL PARM attributes */ |
626 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
627 | char *page) | |
628 | { | |
629 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
630 | ||
684d2fd4 | 631 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
632 | return sprintf(page, "%s\n", vmparm); |
633 | } | |
634 | ||
635 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
636 | size_t vmparm_max, | |
637 | const char *buf, size_t len) | |
638 | { | |
639 | int i, ip_len; | |
640 | ||
641 | /* ignore trailing newline */ | |
642 | ip_len = len; | |
643 | if ((len > 0) && (buf[len - 1] == '\n')) | |
644 | ip_len--; | |
645 | ||
646 | if (ip_len > vmparm_max) | |
647 | return -EINVAL; | |
648 | ||
649 | /* parm is used to store kernel options, check for common chars */ | |
650 | for (i = 0; i < ip_len; i++) | |
651 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
652 | return -EINVAL; | |
653 | ||
654 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
655 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
656 | if (ip_len > 0) { | |
657 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
658 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
659 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
660 | } else { | |
661 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
662 | } | |
663 | ||
664 | return len; | |
665 | } | |
666 | ||
667 | /* NSS wrapper */ | |
668 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
669 | struct kobj_attribute *attr, char *page) | |
670 | { | |
671 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
672 | } | |
673 | ||
674 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
675 | struct kobj_attribute *attr, | |
676 | const char *buf, size_t len) | |
677 | { | |
678 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
679 | } | |
680 | ||
681 | /* CCW wrapper */ | |
682 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
683 | struct kobj_attribute *attr, char *page) | |
684 | { | |
685 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
686 | } | |
687 | ||
688 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
689 | struct kobj_attribute *attr, | |
690 | const char *buf, size_t len) | |
691 | { | |
692 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
693 | } | |
694 | ||
695 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
696 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
697 | reipl_nss_vmparm_store); | |
698 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
699 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
700 | reipl_ccw_vmparm_store); | |
701 | ||
ff6b8ea6 MH |
702 | /* FCP reipl device attributes */ |
703 | ||
2c3c8bea | 704 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
705 | struct bin_attribute *attr, |
706 | char *buf, loff_t off, size_t count) | |
707 | { | |
708 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
709 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
710 | ||
711 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
712 | } | |
713 | ||
2c3c8bea | 714 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
715 | struct bin_attribute *attr, |
716 | char *buf, loff_t off, size_t count) | |
717 | { | |
718 | size_t padding; | |
719 | size_t scpdata_len; | |
720 | ||
721 | if (off < 0) | |
722 | return -EINVAL; | |
723 | ||
724 | if (off >= DIAG308_SCPDATA_SIZE) | |
725 | return -ENOSPC; | |
726 | ||
727 | if (count > DIAG308_SCPDATA_SIZE - off) | |
728 | count = DIAG308_SCPDATA_SIZE - off; | |
729 | ||
730 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf + off, count); | |
731 | scpdata_len = off + count; | |
732 | ||
733 | if (scpdata_len % 8) { | |
734 | padding = 8 - (scpdata_len % 8); | |
735 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
736 | 0, padding); | |
737 | scpdata_len += padding; | |
738 | } | |
739 | ||
740 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
741 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
742 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
743 | ||
744 | return count; | |
745 | } | |
746 | ||
747 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = { | |
748 | .attr = { | |
749 | .name = "scp_data", | |
750 | .mode = S_IRUGO | S_IWUSR, | |
751 | }, | |
752 | .size = PAGE_SIZE, | |
753 | .read = reipl_fcp_scpdata_read, | |
754 | .write = reipl_fcp_scpdata_write, | |
755 | }; | |
756 | ||
ff6b8ea6 MH |
757 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
758 | reipl_block_fcp->ipl_info.fcp.wwpn); | |
759 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", | |
760 | reipl_block_fcp->ipl_info.fcp.lun); | |
761 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
762 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
763 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
764 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
765 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
766 | reipl_block_fcp->ipl_info.fcp.devno); | |
767 | ||
768 | static struct attribute *reipl_fcp_attrs[] = { | |
769 | &sys_reipl_fcp_device_attr.attr, | |
770 | &sys_reipl_fcp_wwpn_attr.attr, | |
771 | &sys_reipl_fcp_lun_attr.attr, | |
772 | &sys_reipl_fcp_bootprog_attr.attr, | |
773 | &sys_reipl_fcp_br_lba_attr.attr, | |
774 | NULL, | |
775 | }; | |
776 | ||
777 | static struct attribute_group reipl_fcp_attr_group = { | |
ff6b8ea6 MH |
778 | .attrs = reipl_fcp_attrs, |
779 | }; | |
780 | ||
781 | /* CCW reipl device attributes */ | |
782 | ||
783 | DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
784 | reipl_block_ccw->ipl_info.ccw.devno); | |
785 | ||
a0443fbb HB |
786 | static void reipl_get_ascii_loadparm(char *loadparm, |
787 | struct ipl_parameter_block *ibp) | |
03a4d208 | 788 | { |
a0443fbb | 789 | memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN); |
03a4d208 MH |
790 | EBCASC(loadparm, LOADPARM_LEN); |
791 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 792 | strim(loadparm); |
03a4d208 MH |
793 | } |
794 | ||
a0443fbb HB |
795 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
796 | char *page) | |
03a4d208 MH |
797 | { |
798 | char buf[LOADPARM_LEN + 1]; | |
799 | ||
a0443fbb | 800 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
801 | return sprintf(page, "%s\n", buf); |
802 | } | |
803 | ||
a0443fbb HB |
804 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
805 | const char *buf, size_t len) | |
03a4d208 MH |
806 | { |
807 | int i, lp_len; | |
808 | ||
809 | /* ignore trailing newline */ | |
810 | lp_len = len; | |
811 | if ((len > 0) && (buf[len - 1] == '\n')) | |
812 | lp_len--; | |
813 | /* loadparm can have max 8 characters and must not start with a blank */ | |
814 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
815 | return -EINVAL; | |
816 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
817 | for (i = 0; i < lp_len; i++) { | |
818 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
819 | (buf[i] == '.')) | |
820 | continue; | |
821 | return -EINVAL; | |
822 | } | |
823 | /* initialize loadparm with blanks */ | |
a0443fbb | 824 | memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN); |
03a4d208 | 825 | /* copy and convert to ebcdic */ |
a0443fbb HB |
826 | memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len); |
827 | ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN); | |
03a4d208 MH |
828 | return len; |
829 | } | |
830 | ||
a0443fbb HB |
831 | /* NSS wrapper */ |
832 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
833 | struct kobj_attribute *attr, char *page) | |
834 | { | |
835 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
836 | } | |
837 | ||
838 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
839 | struct kobj_attribute *attr, | |
840 | const char *buf, size_t len) | |
841 | { | |
842 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
843 | } | |
844 | ||
845 | /* CCW wrapper */ | |
846 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
847 | struct kobj_attribute *attr, char *page) | |
848 | { | |
849 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
850 | } | |
851 | ||
852 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
853 | struct kobj_attribute *attr, | |
854 | const char *buf, size_t len) | |
855 | { | |
856 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
857 | } | |
858 | ||
9b949165 | 859 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
860 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
861 | reipl_ccw_loadparm_store); | |
862 | ||
863 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
864 | &sys_reipl_ccw_device_attr.attr, | |
865 | &sys_reipl_ccw_loadparm_attr.attr, | |
866 | &sys_reipl_ccw_vmparm_attr.attr, | |
867 | NULL, | |
868 | }; | |
03a4d208 | 869 | |
a0443fbb | 870 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 871 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 872 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
873 | NULL, |
874 | }; | |
875 | ||
a0443fbb | 876 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 877 | .name = IPL_CCW_STR, |
a0443fbb HB |
878 | .attrs = reipl_ccw_attrs_vm, |
879 | }; | |
880 | ||
881 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
882 | .name = IPL_CCW_STR, | |
883 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
884 | }; |
885 | ||
fe355b7f HY |
886 | |
887 | /* NSS reipl device attributes */ | |
a0443fbb HB |
888 | static void reipl_get_ascii_nss_name(char *dst, |
889 | struct ipl_parameter_block *ipb) | |
890 | { | |
891 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
892 | EBCASC(dst, NSS_NAME_SIZE); | |
893 | dst[NSS_NAME_SIZE] = 0; | |
894 | } | |
895 | ||
896 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
897 | struct kobj_attribute *attr, char *page) | |
898 | { | |
899 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
900 | ||
901 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
902 | return sprintf(page, "%s\n", nss_name); | |
903 | } | |
904 | ||
905 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
906 | struct kobj_attribute *attr, | |
907 | const char *buf, size_t len) | |
908 | { | |
909 | int nss_len; | |
910 | ||
911 | /* ignore trailing newline */ | |
912 | nss_len = len; | |
913 | if ((len > 0) && (buf[len - 1] == '\n')) | |
914 | nss_len--; | |
fe355b7f | 915 | |
a0443fbb HB |
916 | if (nss_len > NSS_NAME_SIZE) |
917 | return -EINVAL; | |
918 | ||
919 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
920 | if (nss_len > 0) { | |
921 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
922 | DIAG308_VM_FLAGS_NSS_VALID; | |
923 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
924 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
925 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
926 | } else { | |
927 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
928 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
929 | } | |
930 | ||
931 | return len; | |
932 | } | |
933 | ||
934 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
935 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
936 | reipl_nss_name_store); | |
937 | ||
938 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
939 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
940 | reipl_nss_loadparm_store); | |
fe355b7f HY |
941 | |
942 | static struct attribute *reipl_nss_attrs[] = { | |
943 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
944 | &sys_reipl_nss_loadparm_attr.attr, |
945 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
946 | NULL, |
947 | }; | |
948 | ||
949 | static struct attribute_group reipl_nss_attr_group = { | |
950 | .name = IPL_NSS_STR, | |
951 | .attrs = reipl_nss_attrs, | |
952 | }; | |
953 | ||
4857d4bb MH |
954 | static void set_reipl_block_actual(struct ipl_parameter_block *reipl_block) |
955 | { | |
956 | reipl_block_actual = reipl_block; | |
957 | os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, | |
958 | reipl_block->hdr.len); | |
959 | } | |
960 | ||
ff6b8ea6 MH |
961 | /* reipl type */ |
962 | ||
963 | static int reipl_set_type(enum ipl_type type) | |
964 | { | |
965 | if (!(reipl_capabilities & type)) | |
966 | return -EINVAL; | |
967 | ||
968 | switch(type) { | |
969 | case IPL_TYPE_CCW: | |
48657d22 MH |
970 | if (diag308_set_works) |
971 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
972 | else if (MACHINE_IS_VM) | |
411ed322 | 973 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 974 | else |
411ed322 | 975 | reipl_method = REIPL_METHOD_CCW_CIO; |
4857d4bb | 976 | set_reipl_block_actual(reipl_block_ccw); |
ff6b8ea6 MH |
977 | break; |
978 | case IPL_TYPE_FCP: | |
979 | if (diag308_set_works) | |
411ed322 | 980 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 981 | else if (MACHINE_IS_VM) |
411ed322 | 982 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 983 | else |
411ed322 | 984 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
4857d4bb | 985 | set_reipl_block_actual(reipl_block_fcp); |
411ed322 MH |
986 | break; |
987 | case IPL_TYPE_FCP_DUMP: | |
988 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 989 | break; |
fe355b7f | 990 | case IPL_TYPE_NSS: |
a0443fbb HB |
991 | if (diag308_set_works) |
992 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
993 | else | |
994 | reipl_method = REIPL_METHOD_NSS; | |
4857d4bb | 995 | set_reipl_block_actual(reipl_block_nss); |
411ed322 MH |
996 | break; |
997 | case IPL_TYPE_UNKNOWN: | |
998 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 999 | break; |
ff6b8ea6 | 1000 | default: |
411ed322 | 1001 | BUG(); |
ff6b8ea6 MH |
1002 | } |
1003 | reipl_type = type; | |
1004 | return 0; | |
1005 | } | |
1006 | ||
9b949165 GKH |
1007 | static ssize_t reipl_type_show(struct kobject *kobj, |
1008 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
1009 | { |
1010 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
1011 | } | |
1012 | ||
9b949165 GKH |
1013 | static ssize_t reipl_type_store(struct kobject *kobj, |
1014 | struct kobj_attribute *attr, | |
1015 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1016 | { |
1017 | int rc = -EINVAL; | |
1018 | ||
1019 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1020 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1021 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1022 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1023 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1024 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1025 | return (rc != 0) ? rc : len; |
1026 | } | |
1027 | ||
9b949165 | 1028 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1029 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1030 | |
d91885be | 1031 | static struct kset *reipl_kset; |
684d2fd4 | 1032 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1033 | |
a0443fbb HB |
1034 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1035 | const enum ipl_method m) | |
1036 | { | |
1037 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1038 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1039 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1040 | size_t pos = 0; | |
1041 | ||
1042 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1043 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1044 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1045 | |
1046 | switch (m) { | |
1047 | case REIPL_METHOD_CCW_VM: | |
1048 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1049 | break; | |
1050 | case REIPL_METHOD_NSS: | |
1051 | pos = sprintf(dst, "IPL %s", nss_name); | |
1052 | break; | |
1053 | default: | |
1054 | break; | |
1055 | } | |
1056 | if (strlen(loadparm) > 0) | |
1057 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1058 | if (strlen(vmparm) > 0) | |
1059 | sprintf(dst + pos, " PARM %s", vmparm); | |
1060 | } | |
1061 | ||
2c2df118 | 1062 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1063 | { |
1064 | struct ccw_dev_id devid; | |
a0443fbb | 1065 | static char buf[128]; |
ff6b8ea6 | 1066 | |
ff6b8ea6 | 1067 | switch (reipl_method) { |
411ed322 | 1068 | case REIPL_METHOD_CCW_CIO: |
ff6b8ea6 MH |
1069 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
1070 | devid.ssid = 0; | |
1071 | reipl_ccw_dev(&devid); | |
1072 | break; | |
411ed322 | 1073 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1074 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1075 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1076 | break; |
411ed322 | 1077 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 MH |
1078 | diag308(DIAG308_SET, reipl_block_ccw); |
1079 | diag308(DIAG308_IPL, NULL); | |
1080 | break; | |
411ed322 | 1081 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 MH |
1082 | diag308(DIAG308_SET, reipl_block_fcp); |
1083 | diag308(DIAG308_IPL, NULL); | |
1084 | break; | |
411ed322 | 1085 | case REIPL_METHOD_FCP_RO_DIAG: |
ff6b8ea6 MH |
1086 | diag308(DIAG308_IPL, NULL); |
1087 | break; | |
411ed322 | 1088 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1089 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1090 | break; |
a0443fbb HB |
1091 | case REIPL_METHOD_NSS_DIAG: |
1092 | diag308(DIAG308_SET, reipl_block_nss); | |
1093 | diag308(DIAG308_IPL, NULL); | |
1094 | break; | |
411ed322 | 1095 | case REIPL_METHOD_NSS: |
a0443fbb | 1096 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1097 | __cpcmd(buf, NULL, 0, NULL); |
1098 | break; | |
411ed322 | 1099 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1100 | if (MACHINE_IS_VM) |
740b5706 | 1101 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 MH |
1102 | diag308(DIAG308_IPL, NULL); |
1103 | break; | |
411ed322 | 1104 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1105 | break; |
ff6b8ea6 | 1106 | } |
208e5591 | 1107 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1108 | } |
1109 | ||
2c2df118 HC |
1110 | static void reipl_run(struct shutdown_trigger *trigger) |
1111 | { | |
8b646bd7 | 1112 | smp_call_ipl_cpu(__reipl_run, NULL); |
2c2df118 HC |
1113 | } |
1114 | ||
a0443fbb | 1115 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1116 | { |
a0443fbb HB |
1117 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1118 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1119 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1120 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1121 | } | |
ff6b8ea6 | 1122 | |
a0443fbb HB |
1123 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1124 | { | |
1125 | /* LOADPARM */ | |
1126 | /* check if read scp info worked and set loadparm */ | |
1127 | if (sclp_ipl_info.is_valid) | |
1128 | memcpy(ipb->ipl_info.ccw.load_parm, | |
1129 | &sclp_ipl_info.loadparm, LOADPARM_LEN); | |
1130 | else | |
1131 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
1132 | memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN); | |
1133 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; | |
1134 | ||
1135 | /* VM PARM */ | |
1136 | if (MACHINE_IS_VM && diag308_set_works && | |
1137 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1138 | ||
1139 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1140 | ipb->ipl_info.ccw.vm_parm_len = | |
1141 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1142 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1143 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1144 | } | |
ff6b8ea6 MH |
1145 | } |
1146 | ||
99ca4e58 | 1147 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1148 | { |
1149 | int rc; | |
1150 | ||
99ca4e58 MH |
1151 | if (!MACHINE_IS_VM) |
1152 | return 0; | |
a0443fbb HB |
1153 | |
1154 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1155 | if (!reipl_block_nss) | |
1156 | return -ENOMEM; | |
1157 | ||
1158 | if (!diag308_set_works) | |
1159 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1160 | ||
99ca4e58 | 1161 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1162 | if (rc) |
1163 | return rc; | |
a0443fbb HB |
1164 | |
1165 | reipl_block_ccw_init(reipl_block_nss); | |
1166 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1167 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1168 | ' ', NSS_NAME_SIZE); | |
1169 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1170 | kernel_nss_name, strlen(kernel_nss_name)); | |
1171 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1172 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1173 | DIAG308_VM_FLAGS_NSS_VALID; | |
1174 | ||
1175 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1176 | } | |
1177 | ||
fe355b7f HY |
1178 | reipl_capabilities |= IPL_TYPE_NSS; |
1179 | return 0; | |
1180 | } | |
1181 | ||
ff6b8ea6 MH |
1182 | static int __init reipl_ccw_init(void) |
1183 | { | |
1184 | int rc; | |
1185 | ||
1186 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1187 | if (!reipl_block_ccw) | |
1188 | return -ENOMEM; | |
a0443fbb HB |
1189 | |
1190 | if (MACHINE_IS_VM) { | |
1191 | if (!diag308_set_works) | |
1192 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1193 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1194 | &reipl_ccw_attr_group_vm); | |
1195 | } else { | |
1196 | if(!diag308_set_works) | |
1197 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1198 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1199 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1200 | } |
a0443fbb HB |
1201 | if (rc) |
1202 | return rc; | |
1203 | ||
1204 | reipl_block_ccw_init(reipl_block_ccw); | |
1205 | if (ipl_info.type == IPL_TYPE_CCW) { | |
ff6b8ea6 | 1206 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1207 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1208 | } | |
1209 | ||
ff6b8ea6 MH |
1210 | reipl_capabilities |= IPL_TYPE_CCW; |
1211 | return 0; | |
1212 | } | |
1213 | ||
1214 | static int __init reipl_fcp_init(void) | |
1215 | { | |
1216 | int rc; | |
1217 | ||
008d2d11 | 1218 | if (!diag308_set_works) { |
684d2fd4 | 1219 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1220 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1221 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1222 | } else | |
008d2d11 MH |
1223 | return 0; |
1224 | } | |
ff6b8ea6 MH |
1225 | |
1226 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1227 | if (!reipl_block_fcp) | |
1228 | return -ENOMEM; | |
684d2fd4 HB |
1229 | |
1230 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1231 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1232 | &reipl_kset->kobj); | |
798620fb | 1233 | if (!reipl_fcp_kset) { |
684d2fd4 HB |
1234 | free_page((unsigned long) reipl_block_fcp); |
1235 | return -ENOMEM; | |
1236 | } | |
1237 | ||
1238 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1239 | if (rc) { |
684d2fd4 HB |
1240 | kset_unregister(reipl_fcp_kset); |
1241 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1242 | return rc; |
1243 | } | |
684d2fd4 HB |
1244 | |
1245 | rc = sysfs_create_bin_file(&reipl_fcp_kset->kobj, | |
1246 | &sys_reipl_fcp_scp_data_attr); | |
1247 | if (rc) { | |
1248 | sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
1249 | kset_unregister(reipl_fcp_kset); | |
1250 | free_page((unsigned long) reipl_block_fcp); | |
1251 | return rc; | |
1252 | } | |
1253 | ||
1254 | if (ipl_info.type == IPL_TYPE_FCP) | |
ff6b8ea6 | 1255 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
684d2fd4 | 1256 | else { |
ff6b8ea6 MH |
1257 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1258 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1259 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1260 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1261 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1262 | } | |
1263 | reipl_capabilities |= IPL_TYPE_FCP; | |
1264 | return 0; | |
1265 | } | |
1266 | ||
4857d4bb MH |
1267 | static int __init reipl_type_init(void) |
1268 | { | |
1269 | enum ipl_type reipl_type = ipl_info.type; | |
1270 | struct ipl_parameter_block *reipl_block; | |
1271 | unsigned long size; | |
1272 | ||
1273 | reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); | |
1274 | if (!reipl_block) | |
1275 | goto out; | |
1276 | /* | |
1277 | * If we have an OS info reipl block, this will be used | |
1278 | */ | |
1279 | if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_FCP) { | |
1280 | memcpy(reipl_block_fcp, reipl_block, size); | |
1281 | reipl_type = IPL_TYPE_FCP; | |
1282 | } else if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_CCW) { | |
1283 | memcpy(reipl_block_ccw, reipl_block, size); | |
1284 | reipl_type = IPL_TYPE_CCW; | |
1285 | } | |
1286 | out: | |
1287 | return reipl_set_type(reipl_type); | |
1288 | } | |
1289 | ||
2bc89b5e | 1290 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1291 | { |
1292 | int rc; | |
1293 | ||
f62ed9e3 | 1294 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1295 | if (!reipl_kset) |
1296 | return -ENOMEM; | |
1297 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1298 | if (rc) { |
d91885be | 1299 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1300 | return rc; |
1301 | } | |
1302 | rc = reipl_ccw_init(); | |
1303 | if (rc) | |
1304 | return rc; | |
1305 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1306 | if (rc) |
1307 | return rc; | |
1308 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1309 | if (rc) |
1310 | return rc; | |
4857d4bb | 1311 | return reipl_type_init(); |
ff6b8ea6 MH |
1312 | } |
1313 | ||
2bc89b5e HC |
1314 | static struct shutdown_action __refdata reipl_action = { |
1315 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1316 | .fn = reipl_run, | |
1317 | .init = reipl_init, | |
1318 | }; | |
99ca4e58 MH |
1319 | |
1320 | /* | |
1321 | * dump shutdown action: Dump Linux on shutdown. | |
1322 | */ | |
1323 | ||
1324 | /* FCP dump device attributes */ | |
1325 | ||
1326 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", | |
1327 | dump_block_fcp->ipl_info.fcp.wwpn); | |
1328 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", | |
1329 | dump_block_fcp->ipl_info.fcp.lun); | |
1330 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1331 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1332 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1333 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1334 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1335 | dump_block_fcp->ipl_info.fcp.devno); | |
1336 | ||
1337 | static struct attribute *dump_fcp_attrs[] = { | |
1338 | &sys_dump_fcp_device_attr.attr, | |
1339 | &sys_dump_fcp_wwpn_attr.attr, | |
1340 | &sys_dump_fcp_lun_attr.attr, | |
1341 | &sys_dump_fcp_bootprog_attr.attr, | |
1342 | &sys_dump_fcp_br_lba_attr.attr, | |
1343 | NULL, | |
1344 | }; | |
1345 | ||
1346 | static struct attribute_group dump_fcp_attr_group = { | |
1347 | .name = IPL_FCP_STR, | |
1348 | .attrs = dump_fcp_attrs, | |
1349 | }; | |
1350 | ||
1351 | /* CCW dump device attributes */ | |
1352 | ||
1353 | DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1354 | dump_block_ccw->ipl_info.ccw.devno); | |
1355 | ||
1356 | static struct attribute *dump_ccw_attrs[] = { | |
1357 | &sys_dump_ccw_device_attr.attr, | |
1358 | NULL, | |
1359 | }; | |
1360 | ||
1361 | static struct attribute_group dump_ccw_attr_group = { | |
1362 | .name = IPL_CCW_STR, | |
1363 | .attrs = dump_ccw_attrs, | |
1364 | }; | |
1365 | ||
1366 | /* dump type */ | |
1367 | ||
1368 | static int dump_set_type(enum dump_type type) | |
1369 | { | |
1370 | if (!(dump_capabilities & type)) | |
1371 | return -EINVAL; | |
1372 | switch (type) { | |
1373 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1374 | if (diag308_set_works) |
1375 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1376 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1377 | dump_method = DUMP_METHOD_CCW_VM; |
1378 | else | |
1379 | dump_method = DUMP_METHOD_CCW_CIO; | |
1380 | break; | |
1381 | case DUMP_TYPE_FCP: | |
1382 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1383 | break; | |
1384 | default: | |
1385 | dump_method = DUMP_METHOD_NONE; | |
1386 | } | |
1387 | dump_type = type; | |
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | static ssize_t dump_type_show(struct kobject *kobj, | |
1392 | struct kobj_attribute *attr, char *page) | |
1393 | { | |
1394 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1395 | } | |
1396 | ||
1397 | static ssize_t dump_type_store(struct kobject *kobj, | |
1398 | struct kobj_attribute *attr, | |
1399 | const char *buf, size_t len) | |
1400 | { | |
1401 | int rc = -EINVAL; | |
1402 | ||
1403 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1404 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1405 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1406 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1407 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1408 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1409 | return (rc != 0) ? rc : len; | |
1410 | } | |
1411 | ||
1412 | static struct kobj_attribute dump_type_attr = | |
1413 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1414 | ||
1415 | static struct kset *dump_kset; | |
1416 | ||
2c2df118 | 1417 | static void __dump_run(void *unused) |
99ca4e58 MH |
1418 | { |
1419 | struct ccw_dev_id devid; | |
1420 | static char buf[100]; | |
1421 | ||
1422 | switch (dump_method) { | |
1423 | case DUMP_METHOD_CCW_CIO: | |
99ca4e58 MH |
1424 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
1425 | devid.ssid = 0; | |
1426 | reipl_ccw_dev(&devid); | |
1427 | break; | |
1428 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1429 | sprintf(buf, "STORE STATUS"); |
1430 | __cpcmd(buf, NULL, 0, NULL); | |
1431 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1432 | __cpcmd(buf, NULL, 0, NULL); | |
1433 | break; | |
1434 | case DUMP_METHOD_CCW_DIAG: | |
1435 | diag308(DIAG308_SET, dump_block_ccw); | |
1436 | diag308(DIAG308_DUMP, NULL); | |
1437 | break; | |
1438 | case DUMP_METHOD_FCP_DIAG: | |
1439 | diag308(DIAG308_SET, dump_block_fcp); | |
1440 | diag308(DIAG308_DUMP, NULL); | |
1441 | break; | |
2c2df118 HC |
1442 | default: |
1443 | break; | |
99ca4e58 | 1444 | } |
2c2df118 HC |
1445 | } |
1446 | ||
1447 | static void dump_run(struct shutdown_trigger *trigger) | |
1448 | { | |
1449 | if (dump_method == DUMP_METHOD_NONE) | |
1450 | return; | |
1451 | smp_send_stop(); | |
8b646bd7 | 1452 | smp_call_ipl_cpu(__dump_run, NULL); |
99ca4e58 MH |
1453 | } |
1454 | ||
ff6b8ea6 MH |
1455 | static int __init dump_ccw_init(void) |
1456 | { | |
1457 | int rc; | |
1458 | ||
1459 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1460 | if (!dump_block_ccw) | |
1461 | return -ENOMEM; | |
d91885be | 1462 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1463 | if (rc) { |
1464 | free_page((unsigned long)dump_block_ccw); | |
1465 | return rc; | |
1466 | } | |
1467 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1468 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1469 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1470 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1471 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1472 | return 0; |
1473 | } | |
1474 | ||
ff6b8ea6 MH |
1475 | static int __init dump_fcp_init(void) |
1476 | { | |
1477 | int rc; | |
1478 | ||
05dd2530 | 1479 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1480 | return 0; /* LDIPL DUMP is not installed */ |
1481 | if (!diag308_set_works) | |
1482 | return 0; | |
1483 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1484 | if (!dump_block_fcp) | |
1485 | return -ENOMEM; | |
d91885be | 1486 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1487 | if (rc) { |
1488 | free_page((unsigned long)dump_block_fcp); | |
1489 | return rc; | |
1490 | } | |
1491 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1492 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1493 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1494 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1495 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1496 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1497 | return 0; |
1498 | } | |
1499 | ||
2bc89b5e | 1500 | static int __init dump_init(void) |
ff6b8ea6 MH |
1501 | { |
1502 | int rc; | |
1503 | ||
f62ed9e3 | 1504 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1505 | if (!dump_kset) |
1506 | return -ENOMEM; | |
99ca4e58 | 1507 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1508 | if (rc) { |
d91885be | 1509 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1510 | return rc; |
1511 | } | |
1512 | rc = dump_ccw_init(); | |
1513 | if (rc) | |
1514 | return rc; | |
1515 | rc = dump_fcp_init(); | |
1516 | if (rc) | |
1517 | return rc; | |
411ed322 | 1518 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1519 | return 0; |
1520 | } | |
1521 | ||
2bc89b5e HC |
1522 | static struct shutdown_action __refdata dump_action = { |
1523 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1524 | .fn = dump_run, | |
1525 | .init = dump_init, | |
1526 | }; | |
99ca4e58 | 1527 | |
099b7651 FM |
1528 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1529 | { | |
a7df7a94 | 1530 | unsigned long ipib = (unsigned long) reipl_block_actual; |
fbe76568 HC |
1531 | unsigned int csum; |
1532 | ||
1533 | csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); | |
1534 | mem_assign_absolute(S390_lowcore.ipib, ipib); | |
1535 | mem_assign_absolute(S390_lowcore.ipib_checksum, csum); | |
099b7651 FM |
1536 | dump_run(trigger); |
1537 | } | |
1538 | ||
1539 | static int __init dump_reipl_init(void) | |
1540 | { | |
1541 | if (!diag308_set_works) | |
1542 | return -EOPNOTSUPP; | |
1543 | else | |
1544 | return 0; | |
1545 | } | |
1546 | ||
1547 | static struct shutdown_action __refdata dump_reipl_action = { | |
1548 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1549 | .fn = dump_reipl_run, | |
1550 | .init = dump_reipl_init, | |
1551 | }; | |
1552 | ||
99ca4e58 MH |
1553 | /* |
1554 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1555 | */ | |
1556 | ||
1557 | static char vmcmd_on_reboot[128]; | |
1558 | static char vmcmd_on_panic[128]; | |
1559 | static char vmcmd_on_halt[128]; | |
1560 | static char vmcmd_on_poff[128]; | |
7dd6b334 | 1561 | static char vmcmd_on_restart[128]; |
99ca4e58 MH |
1562 | |
1563 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1564 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1565 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1566 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
7dd6b334 | 1567 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
99ca4e58 MH |
1568 | |
1569 | static struct attribute *vmcmd_attrs[] = { | |
1570 | &sys_vmcmd_on_reboot_attr.attr, | |
1571 | &sys_vmcmd_on_panic_attr.attr, | |
1572 | &sys_vmcmd_on_halt_attr.attr, | |
1573 | &sys_vmcmd_on_poff_attr.attr, | |
7dd6b334 | 1574 | &sys_vmcmd_on_restart_attr.attr, |
99ca4e58 MH |
1575 | NULL, |
1576 | }; | |
1577 | ||
1578 | static struct attribute_group vmcmd_attr_group = { | |
1579 | .attrs = vmcmd_attrs, | |
1580 | }; | |
1581 | ||
1582 | static struct kset *vmcmd_kset; | |
1583 | ||
1584 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1585 | { |
99ca4e58 MH |
1586 | char *cmd, *next_cmd; |
1587 | ||
1588 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1589 | cmd = vmcmd_on_reboot; | |
1590 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1591 | cmd = vmcmd_on_panic; | |
1592 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1593 | cmd = vmcmd_on_halt; | |
1594 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1595 | cmd = vmcmd_on_poff; | |
7dd6b334 MH |
1596 | else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
1597 | cmd = vmcmd_on_restart; | |
99ca4e58 MH |
1598 | else |
1599 | return; | |
1600 | ||
1601 | if (strlen(cmd) == 0) | |
1602 | return; | |
1603 | do { | |
1604 | next_cmd = strchr(cmd, '\n'); | |
1605 | if (next_cmd) { | |
1606 | next_cmd[0] = 0; | |
1607 | next_cmd += 1; | |
1608 | } | |
1609 | __cpcmd(cmd, NULL, 0, NULL); | |
1610 | cmd = next_cmd; | |
1611 | } while (cmd != NULL); | |
1612 | } | |
1613 | ||
1614 | static int vmcmd_init(void) | |
1615 | { | |
1616 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1617 | return -EOPNOTSUPP; |
99ca4e58 MH |
1618 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1619 | if (!vmcmd_kset) | |
1620 | return -ENOMEM; | |
1621 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1622 | } | |
1623 | ||
1624 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1625 | vmcmd_run, vmcmd_init}; | |
1626 | ||
1627 | /* | |
1628 | * stop shutdown action: Stop Linux on shutdown. | |
1629 | */ | |
1630 | ||
1631 | static void stop_run(struct shutdown_trigger *trigger) | |
1632 | { | |
e1202eda MH |
1633 | if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
1634 | strcmp(trigger->name, ON_RESTART_STR) == 0) | |
c6547497 | 1635 | disabled_wait((unsigned long) __builtin_return_address(0)); |
8b646bd7 | 1636 | smp_stop_cpu(); |
99ca4e58 MH |
1637 | } |
1638 | ||
1639 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1640 | stop_run, NULL}; | |
1641 | ||
1642 | /* action list */ | |
1643 | ||
1644 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1645 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1646 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1647 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1648 | ||
1649 | /* | |
1650 | * Trigger section | |
1651 | */ | |
1652 | ||
1653 | static struct kset *shutdown_actions_kset; | |
1654 | ||
1655 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1656 | size_t len) | |
1657 | { | |
1658 | int i; | |
099b7651 | 1659 | |
99ca4e58 | 1660 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1661 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1662 | if (shutdown_actions_list[i]->init_rc) { |
1663 | return shutdown_actions_list[i]->init_rc; | |
1664 | } else { | |
1665 | trigger->action = shutdown_actions_list[i]; | |
1666 | return len; | |
1667 | } | |
99ca4e58 MH |
1668 | } |
1669 | } | |
1670 | return -EINVAL; | |
1671 | } | |
1672 | ||
1673 | /* on reipl */ | |
1674 | ||
1675 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1676 | &reipl_action}; | |
1677 | ||
1678 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1679 | struct kobj_attribute *attr, char *page) | |
1680 | { | |
1681 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1682 | } | |
1683 | ||
1684 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1685 | struct kobj_attribute *attr, | |
1686 | const char *buf, size_t len) | |
1687 | { | |
1688 | return set_trigger(buf, &on_reboot_trigger, len); | |
1689 | } | |
1690 | ||
1691 | static struct kobj_attribute on_reboot_attr = | |
1692 | __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store); | |
1693 | ||
1694 | static void do_machine_restart(char *__unused) | |
1695 | { | |
1696 | smp_send_stop(); | |
1697 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1698 | reipl_run(NULL); | |
1699 | } | |
1700 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1701 | ||
1702 | /* on panic */ | |
1703 | ||
1704 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1705 | ||
1706 | static ssize_t on_panic_show(struct kobject *kobj, | |
1707 | struct kobj_attribute *attr, char *page) | |
1708 | { | |
1709 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1710 | } | |
1711 | ||
1712 | static ssize_t on_panic_store(struct kobject *kobj, | |
1713 | struct kobj_attribute *attr, | |
1714 | const char *buf, size_t len) | |
1715 | { | |
1716 | return set_trigger(buf, &on_panic_trigger, len); | |
1717 | } | |
1718 | ||
1719 | static struct kobj_attribute on_panic_attr = | |
1720 | __ATTR(on_panic, 0644, on_panic_show, on_panic_store); | |
1721 | ||
1722 | static void do_panic(void) | |
1723 | { | |
3ab121ab | 1724 | lgr_info_log(); |
99ca4e58 MH |
1725 | on_panic_trigger.action->fn(&on_panic_trigger); |
1726 | stop_run(&on_panic_trigger); | |
1727 | } | |
1728 | ||
7dd6b334 MH |
1729 | /* on restart */ |
1730 | ||
1731 | static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, | |
e1202eda | 1732 | &stop_action}; |
7dd6b334 MH |
1733 | |
1734 | static ssize_t on_restart_show(struct kobject *kobj, | |
1735 | struct kobj_attribute *attr, char *page) | |
1736 | { | |
1737 | return sprintf(page, "%s\n", on_restart_trigger.action->name); | |
1738 | } | |
1739 | ||
1740 | static ssize_t on_restart_store(struct kobject *kobj, | |
1741 | struct kobj_attribute *attr, | |
1742 | const char *buf, size_t len) | |
1743 | { | |
1744 | return set_trigger(buf, &on_restart_trigger, len); | |
1745 | } | |
1746 | ||
1747 | static struct kobj_attribute on_restart_attr = | |
1748 | __ATTR(on_restart, 0644, on_restart_show, on_restart_store); | |
1749 | ||
8b646bd7 | 1750 | static void __do_restart(void *ignore) |
7dd6b334 | 1751 | { |
fa7c0043 | 1752 | __arch_local_irq_stosm(0x04); /* enable DAT */ |
7dd6b334 | 1753 | smp_send_stop(); |
60a0c68d MH |
1754 | #ifdef CONFIG_CRASH_DUMP |
1755 | crash_kexec(NULL); | |
1756 | #endif | |
7dd6b334 MH |
1757 | on_restart_trigger.action->fn(&on_restart_trigger); |
1758 | stop_run(&on_restart_trigger); | |
1759 | } | |
1760 | ||
8b646bd7 MS |
1761 | void do_restart(void) |
1762 | { | |
3ab121ab MH |
1763 | tracing_off(); |
1764 | debug_locks_off(); | |
1765 | lgr_info_log(); | |
8b646bd7 MS |
1766 | smp_call_online_cpu(__do_restart, NULL); |
1767 | } | |
1768 | ||
99ca4e58 MH |
1769 | /* on halt */ |
1770 | ||
1771 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1772 | ||
1773 | static ssize_t on_halt_show(struct kobject *kobj, | |
1774 | struct kobj_attribute *attr, char *page) | |
1775 | { | |
1776 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1777 | } | |
1778 | ||
1779 | static ssize_t on_halt_store(struct kobject *kobj, | |
1780 | struct kobj_attribute *attr, | |
1781 | const char *buf, size_t len) | |
1782 | { | |
1783 | return set_trigger(buf, &on_halt_trigger, len); | |
1784 | } | |
1785 | ||
1786 | static struct kobj_attribute on_halt_attr = | |
1787 | __ATTR(on_halt, 0644, on_halt_show, on_halt_store); | |
ff6b8ea6 | 1788 | |
99ca4e58 MH |
1789 | |
1790 | static void do_machine_halt(void) | |
1791 | { | |
1792 | smp_send_stop(); | |
1793 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1794 | stop_run(&on_halt_trigger); | |
1795 | } | |
1796 | void (*_machine_halt)(void) = do_machine_halt; | |
1797 | ||
1798 | /* on power off */ | |
1799 | ||
1800 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1801 | ||
1802 | static ssize_t on_poff_show(struct kobject *kobj, | |
1803 | struct kobj_attribute *attr, char *page) | |
1804 | { | |
1805 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1806 | } | |
1807 | ||
1808 | static ssize_t on_poff_store(struct kobject *kobj, | |
1809 | struct kobj_attribute *attr, | |
1810 | const char *buf, size_t len) | |
1811 | { | |
1812 | return set_trigger(buf, &on_poff_trigger, len); | |
1813 | } | |
1814 | ||
1815 | static struct kobj_attribute on_poff_attr = | |
1816 | __ATTR(on_poff, 0644, on_poff_show, on_poff_store); | |
1817 | ||
1818 | ||
1819 | static void do_machine_power_off(void) | |
1820 | { | |
1821 | smp_send_stop(); | |
1822 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1823 | stop_run(&on_poff_trigger); | |
1824 | } | |
1825 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1826 | ||
1827 | static void __init shutdown_triggers_init(void) | |
1828 | { | |
d91885be | 1829 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1830 | firmware_kobj); |
d91885be | 1831 | if (!shutdown_actions_kset) |
99ca4e58 MH |
1832 | goto fail; |
1833 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1834 | &on_reboot_attr.attr)) | |
1835 | goto fail; | |
1836 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1837 | &on_panic_attr.attr)) | |
1838 | goto fail; | |
1839 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1840 | &on_halt_attr.attr)) | |
1841 | goto fail; | |
1842 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1843 | &on_poff_attr.attr)) | |
1844 | goto fail; | |
7dd6b334 MH |
1845 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
1846 | &on_restart_attr.attr)) | |
1847 | goto fail; | |
99ca4e58 MH |
1848 | return; |
1849 | fail: | |
1850 | panic("shutdown_triggers_init failed\n"); | |
1851 | } | |
1852 | ||
1853 | static void __init shutdown_actions_init(void) | |
1854 | { | |
1855 | int i; | |
1856 | ||
1857 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1858 | if (!shutdown_actions_list[i]->init) | |
1859 | continue; | |
81088819 FM |
1860 | shutdown_actions_list[i]->init_rc = |
1861 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1862 | } |
ff6b8ea6 MH |
1863 | } |
1864 | ||
1865 | static int __init s390_ipl_init(void) | |
1866 | { | |
d09293ae | 1867 | sclp_get_ipl_info(&sclp_ipl_info); |
99ca4e58 MH |
1868 | shutdown_actions_init(); |
1869 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1870 | return 0; |
1871 | } | |
1872 | ||
1873 | __initcall(s390_ipl_init); | |
15e9b586 | 1874 | |
99ca4e58 MH |
1875 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1876 | { | |
1877 | int sx, dx; | |
1878 | ||
1879 | dx = 0; | |
1880 | for (sx = 0; src[sx] != 0; sx++) { | |
1881 | if (src[sx] == '"') | |
1882 | continue; | |
1883 | dst[dx++] = src[sx]; | |
1884 | if (dx >= n) | |
1885 | break; | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | static int __init vmcmd_on_reboot_setup(char *str) | |
1890 | { | |
1891 | if (!MACHINE_IS_VM) | |
1892 | return 1; | |
1893 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1894 | vmcmd_on_reboot[127] = 0; | |
1895 | on_reboot_trigger.action = &vmcmd_action; | |
1896 | return 1; | |
1897 | } | |
1898 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1899 | ||
1900 | static int __init vmcmd_on_panic_setup(char *str) | |
1901 | { | |
1902 | if (!MACHINE_IS_VM) | |
1903 | return 1; | |
1904 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1905 | vmcmd_on_panic[127] = 0; | |
1906 | on_panic_trigger.action = &vmcmd_action; | |
1907 | return 1; | |
1908 | } | |
1909 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1910 | ||
1911 | static int __init vmcmd_on_halt_setup(char *str) | |
1912 | { | |
1913 | if (!MACHINE_IS_VM) | |
1914 | return 1; | |
1915 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1916 | vmcmd_on_halt[127] = 0; | |
1917 | on_halt_trigger.action = &vmcmd_action; | |
1918 | return 1; | |
1919 | } | |
1920 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1921 | ||
1922 | static int __init vmcmd_on_poff_setup(char *str) | |
1923 | { | |
1924 | if (!MACHINE_IS_VM) | |
1925 | return 1; | |
1926 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1927 | vmcmd_on_poff[127] = 0; | |
1928 | on_poff_trigger.action = &vmcmd_action; | |
1929 | return 1; | |
1930 | } | |
1931 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1932 | ||
1933 | static int on_panic_notify(struct notifier_block *self, | |
1934 | unsigned long event, void *data) | |
1935 | { | |
1936 | do_panic(); | |
1937 | return NOTIFY_OK; | |
1938 | } | |
1939 | ||
1940 | static struct notifier_block on_panic_nb = { | |
1941 | .notifier_call = on_panic_notify, | |
7e9b580e | 1942 | .priority = INT_MIN, |
99ca4e58 MH |
1943 | }; |
1944 | ||
1945 | void __init setup_ipl(void) | |
1946 | { | |
1947 | ipl_info.type = get_ipl_type(); | |
1948 | switch (ipl_info.type) { | |
1949 | case IPL_TYPE_CCW: | |
1950 | ipl_info.data.ccw.dev_id.devno = ipl_devno; | |
1951 | ipl_info.data.ccw.dev_id.ssid = 0; | |
1952 | break; | |
1953 | case IPL_TYPE_FCP: | |
1954 | case IPL_TYPE_FCP_DUMP: | |
1955 | ipl_info.data.fcp.dev_id.devno = | |
1956 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
1957 | ipl_info.data.fcp.dev_id.ssid = 0; | |
1958 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; | |
1959 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1960 | break; | |
1961 | case IPL_TYPE_NSS: | |
1962 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1963 | sizeof(ipl_info.data.nss.name)); | |
1964 | break; | |
1965 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1966 | /* We have no info to copy */ |
1967 | break; | |
1968 | } | |
1969 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1970 | } | |
1971 | ||
a0443fbb HB |
1972 | void __init ipl_update_parameters(void) |
1973 | { | |
3a95e8eb MH |
1974 | int rc; |
1975 | ||
1976 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1977 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1978 | diag308_set_works = 1; |
1979 | } | |
1980 | ||
6fc321fd HC |
1981 | void __init ipl_save_parameters(void) |
1982 | { | |
1983 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1984 | void *src, *dst; |
1985 | ||
1986 | if (cio_get_iplinfo(&iplinfo)) | |
1987 | return; | |
1988 | ||
1989 | ipl_devno = iplinfo.devno; | |
1990 | ipl_flags |= IPL_DEVNO_VALID; | |
1991 | if (!iplinfo.is_qdio) | |
1992 | return; | |
1993 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
cbb870c8 | 1994 | src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr; |
6fc321fd HC |
1995 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
1996 | memmove(dst, src, PAGE_SIZE); | |
cbb870c8 | 1997 | S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN; |
6fc321fd HC |
1998 | } |
1999 | ||
15e9b586 HC |
2000 | static LIST_HEAD(rcall); |
2001 | static DEFINE_MUTEX(rcall_mutex); | |
2002 | ||
2003 | void register_reset_call(struct reset_call *reset) | |
2004 | { | |
2005 | mutex_lock(&rcall_mutex); | |
2006 | list_add(&reset->list, &rcall); | |
2007 | mutex_unlock(&rcall_mutex); | |
2008 | } | |
2009 | EXPORT_SYMBOL_GPL(register_reset_call); | |
2010 | ||
2011 | void unregister_reset_call(struct reset_call *reset) | |
2012 | { | |
2013 | mutex_lock(&rcall_mutex); | |
2014 | list_del(&reset->list); | |
2015 | mutex_unlock(&rcall_mutex); | |
2016 | } | |
2017 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
2018 | ||
2019 | static void do_reset_calls(void) | |
2020 | { | |
2021 | struct reset_call *reset; | |
2022 | ||
9dc7356e MH |
2023 | #ifdef CONFIG_64BIT |
2024 | if (diag308_set_works) { | |
2025 | diag308_reset(); | |
2026 | return; | |
2027 | } | |
2028 | #endif | |
15e9b586 HC |
2029 | list_for_each_entry(reset, &rcall, list) |
2030 | reset->fn(); | |
2031 | } | |
2032 | ||
c5dd8586 | 2033 | u32 dump_prefix_page; |
15e9b586 | 2034 | |
60a0c68d | 2035 | void s390_reset_system(void (*func)(void *), void *data) |
15e9b586 HC |
2036 | { |
2037 | struct _lowcore *lc; | |
2038 | ||
15e9b586 | 2039 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
2040 | |
2041 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
2042 | lc->panic_stack = S390_lowcore.panic_stack; |
2043 | ||
da1cf23e | 2044 | /* Save prefix page address for dump case */ |
c5dd8586 | 2045 | dump_prefix_page = (u32)(unsigned long) lc; |
da1cf23e | 2046 | |
15e9b586 HC |
2047 | /* Disable prefixing */ |
2048 | set_prefix(0); | |
2049 | ||
2050 | /* Disable lowcore protection */ | |
2051 | __ctl_clear_bit(0,28); | |
2052 | ||
2053 | /* Set new machine check handler */ | |
b50511e4 | 2054 | S390_lowcore.mcck_new_psw.mask = psw_kernel_bits | PSW_MASK_DAT; |
15e9b586 | 2055 | S390_lowcore.mcck_new_psw.addr = |
ab14de6c | 2056 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
2057 | |
2058 | /* Set new program check handler */ | |
b50511e4 | 2059 | S390_lowcore.program_new_psw.mask = psw_kernel_bits | PSW_MASK_DAT; |
a45e1414 | 2060 | S390_lowcore.program_new_psw.addr = |
ab14de6c | 2061 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 2062 | |
60a0c68d MH |
2063 | /* Store status at absolute zero */ |
2064 | store_status(); | |
2065 | ||
15e9b586 | 2066 | do_reset_calls(); |
60a0c68d MH |
2067 | if (func) |
2068 | func(data); | |
15e9b586 | 2069 | } |