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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 | * | |
99ca4e58 | 5 | * Copyright IBM Corp. 2005,2007 |
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> |
46b05d26 | 19 | #include <asm/ipl.h> |
ff6b8ea6 MH |
20 | #include <asm/smp.h> |
21 | #include <asm/setup.h> | |
22 | #include <asm/cpcmd.h> | |
23 | #include <asm/cio.h> | |
03a4d208 | 24 | #include <asm/ebcdic.h> |
15e9b586 | 25 | #include <asm/reset.h> |
ab14de6c | 26 | #include <asm/sclp.h> |
3bd5f3ef | 27 | #include <asm/sigp.h> |
159d1ff8 | 28 | #include <asm/checksum.h> |
ff6b8ea6 MH |
29 | |
30 | #define IPL_PARM_BLOCK_VERSION 0 | |
03a4d208 | 31 | |
411ed322 MH |
32 | #define IPL_UNKNOWN_STR "unknown" |
33 | #define IPL_CCW_STR "ccw" | |
34 | #define IPL_FCP_STR "fcp" | |
35 | #define IPL_FCP_DUMP_STR "fcp_dump" | |
36 | #define IPL_NSS_STR "nss" | |
615b04b3 | 37 | |
99ca4e58 MH |
38 | #define DUMP_CCW_STR "ccw" |
39 | #define DUMP_FCP_STR "fcp" | |
40 | #define DUMP_NONE_STR "none" | |
41 | ||
42 | /* | |
43 | * Four shutdown trigger types are supported: | |
44 | * - panic | |
45 | * - halt | |
46 | * - power off | |
47 | * - reipl | |
48 | */ | |
49 | #define ON_PANIC_STR "on_panic" | |
50 | #define ON_HALT_STR "on_halt" | |
51 | #define ON_POFF_STR "on_poff" | |
52 | #define ON_REIPL_STR "on_reboot" | |
53 | ||
54 | struct shutdown_action; | |
55 | struct shutdown_trigger { | |
56 | char *name; | |
57 | struct shutdown_action *action; | |
58 | }; | |
59 | ||
60 | /* | |
099b7651 | 61 | * The following shutdown action types are supported: |
99ca4e58 MH |
62 | */ |
63 | #define SHUTDOWN_ACTION_IPL_STR "ipl" | |
64 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" | |
65 | #define SHUTDOWN_ACTION_DUMP_STR "dump" | |
66 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" | |
67 | #define SHUTDOWN_ACTION_STOP_STR "stop" | |
099b7651 | 68 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
99ca4e58 MH |
69 | |
70 | struct shutdown_action { | |
71 | char *name; | |
72 | void (*fn) (struct shutdown_trigger *trigger); | |
73 | int (*init) (void); | |
81088819 | 74 | int init_rc; |
99ca4e58 MH |
75 | }; |
76 | ||
ff6b8ea6 MH |
77 | static char *ipl_type_str(enum ipl_type type) |
78 | { | |
79 | switch (type) { | |
ff6b8ea6 MH |
80 | case IPL_TYPE_CCW: |
81 | return IPL_CCW_STR; | |
82 | case IPL_TYPE_FCP: | |
83 | return IPL_FCP_STR; | |
411ed322 MH |
84 | case IPL_TYPE_FCP_DUMP: |
85 | return IPL_FCP_DUMP_STR; | |
fe355b7f HY |
86 | case IPL_TYPE_NSS: |
87 | return IPL_NSS_STR; | |
ff6b8ea6 MH |
88 | case IPL_TYPE_UNKNOWN: |
89 | default: | |
90 | return IPL_UNKNOWN_STR; | |
91 | } | |
92 | } | |
93 | ||
411ed322 MH |
94 | enum dump_type { |
95 | DUMP_TYPE_NONE = 1, | |
96 | DUMP_TYPE_CCW = 2, | |
97 | DUMP_TYPE_FCP = 4, | |
98 | }; | |
99 | ||
411ed322 MH |
100 | static char *dump_type_str(enum dump_type type) |
101 | { | |
102 | switch (type) { | |
103 | case DUMP_TYPE_NONE: | |
104 | return DUMP_NONE_STR; | |
105 | case DUMP_TYPE_CCW: | |
106 | return DUMP_CCW_STR; | |
107 | case DUMP_TYPE_FCP: | |
108 | return DUMP_FCP_STR; | |
109 | default: | |
110 | return NULL; | |
111 | } | |
112 | } | |
113 | ||
114 | /* | |
115 | * Must be in data section since the bss section | |
116 | * is not cleared when these are accessed. | |
117 | */ | |
118 | static u16 ipl_devno __attribute__((__section__(".data"))) = 0; | |
119 | u32 ipl_flags __attribute__((__section__(".data"))) = 0; | |
120 | ||
ff6b8ea6 | 121 | enum ipl_method { |
411ed322 MH |
122 | REIPL_METHOD_CCW_CIO, |
123 | REIPL_METHOD_CCW_DIAG, | |
124 | REIPL_METHOD_CCW_VM, | |
125 | REIPL_METHOD_FCP_RO_DIAG, | |
126 | REIPL_METHOD_FCP_RW_DIAG, | |
127 | REIPL_METHOD_FCP_RO_VM, | |
128 | REIPL_METHOD_FCP_DUMP, | |
129 | REIPL_METHOD_NSS, | |
a0443fbb | 130 | REIPL_METHOD_NSS_DIAG, |
411ed322 MH |
131 | REIPL_METHOD_DEFAULT, |
132 | }; | |
133 | ||
134 | enum dump_method { | |
135 | DUMP_METHOD_NONE, | |
136 | DUMP_METHOD_CCW_CIO, | |
137 | DUMP_METHOD_CCW_DIAG, | |
138 | DUMP_METHOD_CCW_VM, | |
139 | DUMP_METHOD_FCP_DIAG, | |
ff6b8ea6 MH |
140 | }; |
141 | ||
ff6b8ea6 MH |
142 | static int diag308_set_works = 0; |
143 | ||
a0443fbb HB |
144 | static struct ipl_parameter_block ipl_block; |
145 | ||
ff6b8ea6 | 146 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
fe355b7f | 147 | |
ff6b8ea6 | 148 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
411ed322 | 149 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
ff6b8ea6 MH |
150 | static struct ipl_parameter_block *reipl_block_fcp; |
151 | static struct ipl_parameter_block *reipl_block_ccw; | |
a0443fbb | 152 | static struct ipl_parameter_block *reipl_block_nss; |
099b7651 | 153 | static struct ipl_parameter_block *reipl_block_actual; |
fe355b7f | 154 | |
411ed322 MH |
155 | static int dump_capabilities = DUMP_TYPE_NONE; |
156 | static enum dump_type dump_type = DUMP_TYPE_NONE; | |
157 | static enum dump_method dump_method = DUMP_METHOD_NONE; | |
ff6b8ea6 MH |
158 | static struct ipl_parameter_block *dump_block_fcp; |
159 | static struct ipl_parameter_block *dump_block_ccw; | |
160 | ||
05dd2530 HC |
161 | static struct sclp_ipl_info sclp_ipl_info; |
162 | ||
46b05d26 | 163 | int diag308(unsigned long subcode, void *addr) |
ff6b8ea6 | 164 | { |
94c12cc7 | 165 | register unsigned long _addr asm("0") = (unsigned long) addr; |
ff6b8ea6 MH |
166 | register unsigned long _rc asm("1") = 0; |
167 | ||
94c12cc7 MS |
168 | asm volatile( |
169 | " diag %0,%2,0x308\n" | |
170 | "0:\n" | |
171 | EX_TABLE(0b,0b) | |
ff6b8ea6 | 172 | : "+d" (_addr), "+d" (_rc) |
94c12cc7 | 173 | : "d" (subcode) : "cc", "memory"); |
ff6b8ea6 MH |
174 | return _rc; |
175 | } | |
411ed322 | 176 | EXPORT_SYMBOL_GPL(diag308); |
ff6b8ea6 MH |
177 | |
178 | /* SYSFS */ | |
179 | ||
180 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ | |
9b949165 GKH |
181 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
182 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
183 | char *page) \ |
184 | { \ | |
185 | return sprintf(page, _format, _value); \ | |
186 | } \ | |
9b949165 | 187 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
188 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL); |
189 | ||
190 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ | |
9b949165 GKH |
191 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
192 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
193 | char *page) \ |
194 | { \ | |
195 | return sprintf(page, _fmt_out, \ | |
196 | (unsigned long long) _value); \ | |
197 | } \ | |
9b949165 GKH |
198 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
199 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
200 | const char *buf, size_t len) \ |
201 | { \ | |
202 | unsigned long long value; \ | |
203 | if (sscanf(buf, _fmt_in, &value) != 1) \ | |
204 | return -EINVAL; \ | |
205 | _value = value; \ | |
206 | return len; \ | |
207 | } \ | |
9b949165 | 208 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
209 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
210 | sys_##_prefix##_##_name##_show, \ | |
211 | sys_##_prefix##_##_name##_store); | |
212 | ||
fe355b7f | 213 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
9b949165 GKH |
214 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
215 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
216 | char *page) \ |
217 | { \ | |
218 | return sprintf(page, _fmt_out, _value); \ | |
219 | } \ | |
9b949165 GKH |
220 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
221 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
222 | const char *buf, size_t len) \ |
223 | { \ | |
99ca4e58 | 224 | strncpy(_value, buf, sizeof(_value) - 1); \ |
1d802e24 | 225 | strim(_value); \ |
fe355b7f HY |
226 | return len; \ |
227 | } \ | |
9b949165 | 228 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
fe355b7f HY |
229 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
230 | sys_##_prefix##_##_name##_show, \ | |
231 | sys_##_prefix##_##_name##_store); | |
232 | ||
ff6b8ea6 MH |
233 | static void make_attrs_ro(struct attribute **attrs) |
234 | { | |
235 | while (*attrs) { | |
236 | (*attrs)->mode = S_IRUGO; | |
237 | attrs++; | |
238 | } | |
239 | } | |
240 | ||
241 | /* | |
242 | * ipl section | |
243 | */ | |
244 | ||
411ed322 | 245 | static __init enum ipl_type get_ipl_type(void) |
ff6b8ea6 MH |
246 | { |
247 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
248 | ||
fe355b7f HY |
249 | if (ipl_flags & IPL_NSS_VALID) |
250 | return IPL_TYPE_NSS; | |
e87bfe51 | 251 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
ff6b8ea6 | 252 | return IPL_TYPE_UNKNOWN; |
e87bfe51 | 253 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
ff6b8ea6 MH |
254 | return IPL_TYPE_CCW; |
255 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) | |
256 | return IPL_TYPE_UNKNOWN; | |
257 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) | |
258 | return IPL_TYPE_UNKNOWN; | |
411ed322 MH |
259 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
260 | return IPL_TYPE_FCP_DUMP; | |
ff6b8ea6 MH |
261 | return IPL_TYPE_FCP; |
262 | } | |
263 | ||
411ed322 MH |
264 | struct ipl_info ipl_info; |
265 | EXPORT_SYMBOL_GPL(ipl_info); | |
266 | ||
9b949165 GKH |
267 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
268 | char *page) | |
ff6b8ea6 | 269 | { |
411ed322 | 270 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
ff6b8ea6 MH |
271 | } |
272 | ||
9b949165 | 273 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
ff6b8ea6 | 274 | |
a0443fbb | 275 | /* VM IPL PARM routines */ |
684d2fd4 | 276 | size_t reipl_get_ascii_vmparm(char *dest, size_t size, |
a0443fbb HB |
277 | const struct ipl_parameter_block *ipb) |
278 | { | |
279 | int i; | |
684d2fd4 | 280 | size_t len; |
a0443fbb HB |
281 | char has_lowercase = 0; |
282 | ||
684d2fd4 | 283 | len = 0; |
a0443fbb HB |
284 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
285 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { | |
286 | ||
684d2fd4 | 287 | len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len); |
a0443fbb HB |
288 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
289 | /* If at least one character is lowercase, we assume mixed | |
290 | * case; otherwise we convert everything to lowercase. | |
291 | */ | |
292 | for (i = 0; i < len; i++) | |
293 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ | |
294 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ | |
295 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ | |
296 | has_lowercase = 1; | |
297 | break; | |
298 | } | |
299 | if (!has_lowercase) | |
300 | EBC_TOLOWER(dest, len); | |
301 | EBCASC(dest, len); | |
302 | } | |
303 | dest[len] = 0; | |
684d2fd4 HB |
304 | |
305 | return len; | |
a0443fbb HB |
306 | } |
307 | ||
684d2fd4 | 308 | size_t append_ipl_vmparm(char *dest, size_t size) |
a0443fbb | 309 | { |
684d2fd4 HB |
310 | size_t rc; |
311 | ||
312 | rc = 0; | |
a0443fbb | 313 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
684d2fd4 | 314 | rc = reipl_get_ascii_vmparm(dest, size, &ipl_block); |
a0443fbb HB |
315 | else |
316 | dest[0] = 0; | |
684d2fd4 | 317 | return rc; |
a0443fbb HB |
318 | } |
319 | ||
320 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, | |
321 | struct kobj_attribute *attr, char *page) | |
322 | { | |
323 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; | |
324 | ||
684d2fd4 | 325 | append_ipl_vmparm(parm, sizeof(parm)); |
a0443fbb HB |
326 | return sprintf(page, "%s\n", parm); |
327 | } | |
328 | ||
684d2fd4 HB |
329 | static size_t scpdata_length(const char* buf, size_t count) |
330 | { | |
331 | while (count) { | |
332 | if (buf[count - 1] != '\0' && buf[count - 1] != ' ') | |
333 | break; | |
334 | count--; | |
335 | } | |
336 | return count; | |
337 | } | |
338 | ||
339 | size_t reipl_append_ascii_scpdata(char *dest, size_t size, | |
340 | const struct ipl_parameter_block *ipb) | |
341 | { | |
342 | size_t count; | |
343 | size_t i; | |
18d00acf | 344 | int has_lowercase; |
684d2fd4 HB |
345 | |
346 | count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data, | |
347 | ipb->ipl_info.fcp.scp_data_len)); | |
348 | if (!count) | |
349 | goto out; | |
350 | ||
18d00acf HB |
351 | has_lowercase = 0; |
352 | for (i = 0; i < count; i++) { | |
684d2fd4 HB |
353 | if (!isascii(ipb->ipl_info.fcp.scp_data[i])) { |
354 | count = 0; | |
355 | goto out; | |
356 | } | |
18d00acf HB |
357 | if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i])) |
358 | has_lowercase = 1; | |
359 | } | |
684d2fd4 | 360 | |
18d00acf HB |
361 | if (has_lowercase) |
362 | memcpy(dest, ipb->ipl_info.fcp.scp_data, count); | |
363 | else | |
364 | for (i = 0; i < count; i++) | |
365 | dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]); | |
684d2fd4 HB |
366 | out: |
367 | dest[count] = '\0'; | |
368 | return count; | |
369 | } | |
370 | ||
371 | size_t append_ipl_scpdata(char *dest, size_t len) | |
372 | { | |
373 | size_t rc; | |
374 | ||
375 | rc = 0; | |
376 | if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP) | |
377 | rc = reipl_append_ascii_scpdata(dest, len, &ipl_block); | |
378 | else | |
379 | dest[0] = 0; | |
380 | return rc; | |
381 | } | |
382 | ||
383 | ||
a0443fbb HB |
384 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
385 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); | |
386 | ||
9b949165 GKH |
387 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
388 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
389 | { |
390 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
391 | ||
411ed322 | 392 | switch (ipl_info.type) { |
ff6b8ea6 MH |
393 | case IPL_TYPE_CCW: |
394 | return sprintf(page, "0.0.%04x\n", ipl_devno); | |
395 | case IPL_TYPE_FCP: | |
411ed322 | 396 | case IPL_TYPE_FCP_DUMP: |
ff6b8ea6 MH |
397 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
398 | default: | |
399 | return 0; | |
400 | } | |
401 | } | |
402 | ||
9b949165 | 403 | static struct kobj_attribute sys_ipl_device_attr = |
ff6b8ea6 MH |
404 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
405 | ||
05bd711e AV |
406 | static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr, |
407 | char *buf, loff_t off, size_t count) | |
ff6b8ea6 | 408 | { |
0788fea4 AM |
409 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
410 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 MH |
411 | } |
412 | ||
413 | static struct bin_attribute ipl_parameter_attr = { | |
414 | .attr = { | |
415 | .name = "binary_parameter", | |
416 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
417 | }, |
418 | .size = PAGE_SIZE, | |
419 | .read = &ipl_parameter_read, | |
420 | }; | |
421 | ||
05bd711e AV |
422 | static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr, |
423 | char *buf, loff_t off, size_t count) | |
ff6b8ea6 MH |
424 | { |
425 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
426 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
427 | ||
0788fea4 | 428 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 MH |
429 | } |
430 | ||
431 | static struct bin_attribute ipl_scp_data_attr = { | |
432 | .attr = { | |
433 | .name = "scp_data", | |
434 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
435 | }, |
436 | .size = PAGE_SIZE, | |
05bd711e | 437 | .read = ipl_scp_data_read, |
ff6b8ea6 MH |
438 | }; |
439 | ||
440 | /* FCP ipl device attributes */ | |
441 | ||
442 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
443 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
444 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
445 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
446 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
447 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
448 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
449 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
450 | ||
451 | static struct attribute *ipl_fcp_attrs[] = { | |
452 | &sys_ipl_type_attr.attr, | |
453 | &sys_ipl_device_attr.attr, | |
454 | &sys_ipl_fcp_wwpn_attr.attr, | |
455 | &sys_ipl_fcp_lun_attr.attr, | |
456 | &sys_ipl_fcp_bootprog_attr.attr, | |
457 | &sys_ipl_fcp_br_lba_attr.attr, | |
458 | NULL, | |
459 | }; | |
460 | ||
461 | static struct attribute_group ipl_fcp_attr_group = { | |
462 | .attrs = ipl_fcp_attrs, | |
463 | }; | |
464 | ||
465 | /* CCW ipl device attributes */ | |
466 | ||
9b949165 GKH |
467 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
468 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
469 | { |
470 | char loadparm[LOADPARM_LEN + 1] = {}; | |
471 | ||
05dd2530 | 472 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 473 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 474 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 475 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 476 | strim(loadparm); |
03a4d208 MH |
477 | return sprintf(page, "%s\n", loadparm); |
478 | } | |
479 | ||
9b949165 | 480 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
481 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
482 | ||
a0443fbb HB |
483 | static struct attribute *ipl_ccw_attrs_vm[] = { |
484 | &sys_ipl_type_attr.attr, | |
485 | &sys_ipl_device_attr.attr, | |
486 | &sys_ipl_ccw_loadparm_attr.attr, | |
487 | &sys_ipl_vm_parm_attr.attr, | |
488 | NULL, | |
489 | }; | |
490 | ||
491 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
492 | &sys_ipl_type_attr.attr, |
493 | &sys_ipl_device_attr.attr, | |
03a4d208 | 494 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
495 | NULL, |
496 | }; | |
497 | ||
a0443fbb HB |
498 | static struct attribute_group ipl_ccw_attr_group_vm = { |
499 | .attrs = ipl_ccw_attrs_vm, | |
500 | }; | |
501 | ||
502 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
503 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
504 | }; |
505 | ||
fe355b7f HY |
506 | /* NSS ipl device attributes */ |
507 | ||
508 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
509 | ||
510 | static struct attribute *ipl_nss_attrs[] = { | |
511 | &sys_ipl_type_attr.attr, | |
512 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
513 | &sys_ipl_ccw_loadparm_attr.attr, |
514 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
515 | NULL, |
516 | }; | |
517 | ||
518 | static struct attribute_group ipl_nss_attr_group = { | |
519 | .attrs = ipl_nss_attrs, | |
520 | }; | |
521 | ||
ff6b8ea6 MH |
522 | /* UNKNOWN ipl device attributes */ |
523 | ||
524 | static struct attribute *ipl_unknown_attrs[] = { | |
525 | &sys_ipl_type_attr.attr, | |
526 | NULL, | |
527 | }; | |
528 | ||
529 | static struct attribute_group ipl_unknown_attr_group = { | |
530 | .attrs = ipl_unknown_attrs, | |
531 | }; | |
532 | ||
d91885be | 533 | static struct kset *ipl_kset; |
ff6b8ea6 | 534 | |
99ca4e58 MH |
535 | static int __init ipl_register_fcp_files(void) |
536 | { | |
537 | int rc; | |
538 | ||
539 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
540 | if (rc) | |
541 | goto out; | |
542 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
543 | if (rc) | |
544 | goto out_ipl_parm; | |
545 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr); | |
546 | if (!rc) | |
547 | goto out; | |
548 | ||
549 | sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
550 | ||
551 | out_ipl_parm: | |
552 | sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
553 | out: | |
554 | return rc; | |
555 | } | |
556 | ||
2c2df118 | 557 | static void __ipl_run(void *unused) |
99ca4e58 MH |
558 | { |
559 | diag308(DIAG308_IPL, NULL); | |
560 | if (MACHINE_IS_VM) | |
561 | __cpcmd("IPL", NULL, 0, NULL); | |
562 | else if (ipl_info.type == IPL_TYPE_CCW) | |
563 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
564 | } | |
565 | ||
2c2df118 HC |
566 | static void ipl_run(struct shutdown_trigger *trigger) |
567 | { | |
568 | smp_switch_to_ipl_cpu(__ipl_run, NULL); | |
569 | } | |
570 | ||
2bc89b5e | 571 | static int __init ipl_init(void) |
99ca4e58 MH |
572 | { |
573 | int rc; | |
574 | ||
575 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
576 | if (!ipl_kset) { | |
577 | rc = -ENOMEM; | |
578 | goto out; | |
579 | } | |
580 | switch (ipl_info.type) { | |
581 | case IPL_TYPE_CCW: | |
a0443fbb HB |
582 | if (MACHINE_IS_VM) |
583 | rc = sysfs_create_group(&ipl_kset->kobj, | |
584 | &ipl_ccw_attr_group_vm); | |
585 | else | |
586 | rc = sysfs_create_group(&ipl_kset->kobj, | |
587 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
588 | break; |
589 | case IPL_TYPE_FCP: | |
590 | case IPL_TYPE_FCP_DUMP: | |
591 | rc = ipl_register_fcp_files(); | |
592 | break; | |
593 | case IPL_TYPE_NSS: | |
594 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
595 | break; | |
596 | default: | |
597 | rc = sysfs_create_group(&ipl_kset->kobj, | |
598 | &ipl_unknown_attr_group); | |
599 | break; | |
600 | } | |
601 | out: | |
602 | if (rc) | |
603 | panic("ipl_init failed: rc = %i\n", rc); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
2bc89b5e HC |
608 | static struct shutdown_action __refdata ipl_action = { |
609 | .name = SHUTDOWN_ACTION_IPL_STR, | |
610 | .fn = ipl_run, | |
611 | .init = ipl_init, | |
612 | }; | |
99ca4e58 | 613 | |
ff6b8ea6 | 614 | /* |
99ca4e58 | 615 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
616 | */ |
617 | ||
a0443fbb HB |
618 | /* VM IPL PARM attributes */ |
619 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
620 | char *page) | |
621 | { | |
622 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
623 | ||
684d2fd4 | 624 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
625 | return sprintf(page, "%s\n", vmparm); |
626 | } | |
627 | ||
628 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
629 | size_t vmparm_max, | |
630 | const char *buf, size_t len) | |
631 | { | |
632 | int i, ip_len; | |
633 | ||
634 | /* ignore trailing newline */ | |
635 | ip_len = len; | |
636 | if ((len > 0) && (buf[len - 1] == '\n')) | |
637 | ip_len--; | |
638 | ||
639 | if (ip_len > vmparm_max) | |
640 | return -EINVAL; | |
641 | ||
642 | /* parm is used to store kernel options, check for common chars */ | |
643 | for (i = 0; i < ip_len; i++) | |
644 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
645 | return -EINVAL; | |
646 | ||
647 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
648 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
649 | if (ip_len > 0) { | |
650 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
651 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
652 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
653 | } else { | |
654 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
655 | } | |
656 | ||
657 | return len; | |
658 | } | |
659 | ||
660 | /* NSS wrapper */ | |
661 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
662 | struct kobj_attribute *attr, char *page) | |
663 | { | |
664 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
665 | } | |
666 | ||
667 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
668 | struct kobj_attribute *attr, | |
669 | const char *buf, size_t len) | |
670 | { | |
671 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
672 | } | |
673 | ||
674 | /* CCW wrapper */ | |
675 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
676 | struct kobj_attribute *attr, char *page) | |
677 | { | |
678 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
679 | } | |
680 | ||
681 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
682 | struct kobj_attribute *attr, | |
683 | const char *buf, size_t len) | |
684 | { | |
685 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
686 | } | |
687 | ||
688 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
689 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
690 | reipl_nss_vmparm_store); | |
691 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
692 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
693 | reipl_ccw_vmparm_store); | |
694 | ||
ff6b8ea6 MH |
695 | /* FCP reipl device attributes */ |
696 | ||
684d2fd4 HB |
697 | static ssize_t reipl_fcp_scpdata_read(struct kobject *kobj, |
698 | struct bin_attribute *attr, | |
699 | char *buf, loff_t off, size_t count) | |
700 | { | |
701 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
702 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
703 | ||
704 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
705 | } | |
706 | ||
707 | static ssize_t reipl_fcp_scpdata_write(struct kobject *kobj, | |
708 | struct bin_attribute *attr, | |
709 | char *buf, loff_t off, size_t count) | |
710 | { | |
711 | size_t padding; | |
712 | size_t scpdata_len; | |
713 | ||
714 | if (off < 0) | |
715 | return -EINVAL; | |
716 | ||
717 | if (off >= DIAG308_SCPDATA_SIZE) | |
718 | return -ENOSPC; | |
719 | ||
720 | if (count > DIAG308_SCPDATA_SIZE - off) | |
721 | count = DIAG308_SCPDATA_SIZE - off; | |
722 | ||
723 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf + off, count); | |
724 | scpdata_len = off + count; | |
725 | ||
726 | if (scpdata_len % 8) { | |
727 | padding = 8 - (scpdata_len % 8); | |
728 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
729 | 0, padding); | |
730 | scpdata_len += padding; | |
731 | } | |
732 | ||
733 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
734 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
735 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
736 | ||
737 | return count; | |
738 | } | |
739 | ||
740 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = { | |
741 | .attr = { | |
742 | .name = "scp_data", | |
743 | .mode = S_IRUGO | S_IWUSR, | |
744 | }, | |
745 | .size = PAGE_SIZE, | |
746 | .read = reipl_fcp_scpdata_read, | |
747 | .write = reipl_fcp_scpdata_write, | |
748 | }; | |
749 | ||
ff6b8ea6 MH |
750 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
751 | reipl_block_fcp->ipl_info.fcp.wwpn); | |
752 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", | |
753 | reipl_block_fcp->ipl_info.fcp.lun); | |
754 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
755 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
756 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
757 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
758 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
759 | reipl_block_fcp->ipl_info.fcp.devno); | |
760 | ||
761 | static struct attribute *reipl_fcp_attrs[] = { | |
762 | &sys_reipl_fcp_device_attr.attr, | |
763 | &sys_reipl_fcp_wwpn_attr.attr, | |
764 | &sys_reipl_fcp_lun_attr.attr, | |
765 | &sys_reipl_fcp_bootprog_attr.attr, | |
766 | &sys_reipl_fcp_br_lba_attr.attr, | |
767 | NULL, | |
768 | }; | |
769 | ||
770 | static struct attribute_group reipl_fcp_attr_group = { | |
ff6b8ea6 MH |
771 | .attrs = reipl_fcp_attrs, |
772 | }; | |
773 | ||
774 | /* CCW reipl device attributes */ | |
775 | ||
776 | DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
777 | reipl_block_ccw->ipl_info.ccw.devno); | |
778 | ||
a0443fbb HB |
779 | static void reipl_get_ascii_loadparm(char *loadparm, |
780 | struct ipl_parameter_block *ibp) | |
03a4d208 | 781 | { |
a0443fbb | 782 | memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN); |
03a4d208 MH |
783 | EBCASC(loadparm, LOADPARM_LEN); |
784 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 785 | strim(loadparm); |
03a4d208 MH |
786 | } |
787 | ||
a0443fbb HB |
788 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
789 | char *page) | |
03a4d208 MH |
790 | { |
791 | char buf[LOADPARM_LEN + 1]; | |
792 | ||
a0443fbb | 793 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
794 | return sprintf(page, "%s\n", buf); |
795 | } | |
796 | ||
a0443fbb HB |
797 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
798 | const char *buf, size_t len) | |
03a4d208 MH |
799 | { |
800 | int i, lp_len; | |
801 | ||
802 | /* ignore trailing newline */ | |
803 | lp_len = len; | |
804 | if ((len > 0) && (buf[len - 1] == '\n')) | |
805 | lp_len--; | |
806 | /* loadparm can have max 8 characters and must not start with a blank */ | |
807 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
808 | return -EINVAL; | |
809 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
810 | for (i = 0; i < lp_len; i++) { | |
811 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
812 | (buf[i] == '.')) | |
813 | continue; | |
814 | return -EINVAL; | |
815 | } | |
816 | /* initialize loadparm with blanks */ | |
a0443fbb | 817 | memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN); |
03a4d208 | 818 | /* copy and convert to ebcdic */ |
a0443fbb HB |
819 | memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len); |
820 | ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN); | |
03a4d208 MH |
821 | return len; |
822 | } | |
823 | ||
a0443fbb HB |
824 | /* NSS wrapper */ |
825 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
826 | struct kobj_attribute *attr, char *page) | |
827 | { | |
828 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
829 | } | |
830 | ||
831 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
832 | struct kobj_attribute *attr, | |
833 | const char *buf, size_t len) | |
834 | { | |
835 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
836 | } | |
837 | ||
838 | /* CCW wrapper */ | |
839 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
840 | struct kobj_attribute *attr, char *page) | |
841 | { | |
842 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
843 | } | |
844 | ||
845 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
846 | struct kobj_attribute *attr, | |
847 | const char *buf, size_t len) | |
848 | { | |
849 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
850 | } | |
851 | ||
9b949165 | 852 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
853 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
854 | reipl_ccw_loadparm_store); | |
855 | ||
856 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
857 | &sys_reipl_ccw_device_attr.attr, | |
858 | &sys_reipl_ccw_loadparm_attr.attr, | |
859 | &sys_reipl_ccw_vmparm_attr.attr, | |
860 | NULL, | |
861 | }; | |
03a4d208 | 862 | |
a0443fbb | 863 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 864 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 865 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
866 | NULL, |
867 | }; | |
868 | ||
a0443fbb | 869 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 870 | .name = IPL_CCW_STR, |
a0443fbb HB |
871 | .attrs = reipl_ccw_attrs_vm, |
872 | }; | |
873 | ||
874 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
875 | .name = IPL_CCW_STR, | |
876 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
877 | }; |
878 | ||
fe355b7f HY |
879 | |
880 | /* NSS reipl device attributes */ | |
a0443fbb HB |
881 | static void reipl_get_ascii_nss_name(char *dst, |
882 | struct ipl_parameter_block *ipb) | |
883 | { | |
884 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
885 | EBCASC(dst, NSS_NAME_SIZE); | |
886 | dst[NSS_NAME_SIZE] = 0; | |
887 | } | |
888 | ||
889 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
890 | struct kobj_attribute *attr, char *page) | |
891 | { | |
892 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
893 | ||
894 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
895 | return sprintf(page, "%s\n", nss_name); | |
896 | } | |
897 | ||
898 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
899 | struct kobj_attribute *attr, | |
900 | const char *buf, size_t len) | |
901 | { | |
902 | int nss_len; | |
903 | ||
904 | /* ignore trailing newline */ | |
905 | nss_len = len; | |
906 | if ((len > 0) && (buf[len - 1] == '\n')) | |
907 | nss_len--; | |
fe355b7f | 908 | |
a0443fbb HB |
909 | if (nss_len > NSS_NAME_SIZE) |
910 | return -EINVAL; | |
911 | ||
912 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
913 | if (nss_len > 0) { | |
914 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
915 | DIAG308_VM_FLAGS_NSS_VALID; | |
916 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
917 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
918 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
919 | } else { | |
920 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
921 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
922 | } | |
923 | ||
924 | return len; | |
925 | } | |
926 | ||
927 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
928 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
929 | reipl_nss_name_store); | |
930 | ||
931 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
932 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
933 | reipl_nss_loadparm_store); | |
fe355b7f HY |
934 | |
935 | static struct attribute *reipl_nss_attrs[] = { | |
936 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
937 | &sys_reipl_nss_loadparm_attr.attr, |
938 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
939 | NULL, |
940 | }; | |
941 | ||
942 | static struct attribute_group reipl_nss_attr_group = { | |
943 | .name = IPL_NSS_STR, | |
944 | .attrs = reipl_nss_attrs, | |
945 | }; | |
946 | ||
ff6b8ea6 MH |
947 | /* reipl type */ |
948 | ||
949 | static int reipl_set_type(enum ipl_type type) | |
950 | { | |
951 | if (!(reipl_capabilities & type)) | |
952 | return -EINVAL; | |
953 | ||
954 | switch(type) { | |
955 | case IPL_TYPE_CCW: | |
48657d22 MH |
956 | if (diag308_set_works) |
957 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
958 | else if (MACHINE_IS_VM) | |
411ed322 | 959 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 960 | else |
411ed322 | 961 | reipl_method = REIPL_METHOD_CCW_CIO; |
099b7651 | 962 | reipl_block_actual = reipl_block_ccw; |
ff6b8ea6 MH |
963 | break; |
964 | case IPL_TYPE_FCP: | |
965 | if (diag308_set_works) | |
411ed322 | 966 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 967 | else if (MACHINE_IS_VM) |
411ed322 | 968 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 969 | else |
411ed322 | 970 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
099b7651 | 971 | reipl_block_actual = reipl_block_fcp; |
411ed322 MH |
972 | break; |
973 | case IPL_TYPE_FCP_DUMP: | |
974 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 975 | break; |
fe355b7f | 976 | case IPL_TYPE_NSS: |
a0443fbb HB |
977 | if (diag308_set_works) |
978 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
979 | else | |
980 | reipl_method = REIPL_METHOD_NSS; | |
099b7651 | 981 | reipl_block_actual = reipl_block_nss; |
411ed322 MH |
982 | break; |
983 | case IPL_TYPE_UNKNOWN: | |
984 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 985 | break; |
ff6b8ea6 | 986 | default: |
411ed322 | 987 | BUG(); |
ff6b8ea6 MH |
988 | } |
989 | reipl_type = type; | |
990 | return 0; | |
991 | } | |
992 | ||
9b949165 GKH |
993 | static ssize_t reipl_type_show(struct kobject *kobj, |
994 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
995 | { |
996 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
997 | } | |
998 | ||
9b949165 GKH |
999 | static ssize_t reipl_type_store(struct kobject *kobj, |
1000 | struct kobj_attribute *attr, | |
1001 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1002 | { |
1003 | int rc = -EINVAL; | |
1004 | ||
1005 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1006 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1007 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1008 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1009 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1010 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1011 | return (rc != 0) ? rc : len; |
1012 | } | |
1013 | ||
9b949165 | 1014 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1015 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1016 | |
d91885be | 1017 | static struct kset *reipl_kset; |
684d2fd4 | 1018 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1019 | |
a0443fbb HB |
1020 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1021 | const enum ipl_method m) | |
1022 | { | |
1023 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1024 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1025 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1026 | size_t pos = 0; | |
1027 | ||
1028 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1029 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1030 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1031 | |
1032 | switch (m) { | |
1033 | case REIPL_METHOD_CCW_VM: | |
1034 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1035 | break; | |
1036 | case REIPL_METHOD_NSS: | |
1037 | pos = sprintf(dst, "IPL %s", nss_name); | |
1038 | break; | |
1039 | default: | |
1040 | break; | |
1041 | } | |
1042 | if (strlen(loadparm) > 0) | |
1043 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1044 | if (strlen(vmparm) > 0) | |
1045 | sprintf(dst + pos, " PARM %s", vmparm); | |
1046 | } | |
1047 | ||
2c2df118 | 1048 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1049 | { |
1050 | struct ccw_dev_id devid; | |
a0443fbb | 1051 | static char buf[128]; |
ff6b8ea6 | 1052 | |
ff6b8ea6 | 1053 | switch (reipl_method) { |
411ed322 | 1054 | case REIPL_METHOD_CCW_CIO: |
ff6b8ea6 MH |
1055 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
1056 | devid.ssid = 0; | |
1057 | reipl_ccw_dev(&devid); | |
1058 | break; | |
411ed322 | 1059 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1060 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1061 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1062 | break; |
411ed322 | 1063 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 MH |
1064 | diag308(DIAG308_SET, reipl_block_ccw); |
1065 | diag308(DIAG308_IPL, NULL); | |
1066 | break; | |
411ed322 | 1067 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 MH |
1068 | diag308(DIAG308_SET, reipl_block_fcp); |
1069 | diag308(DIAG308_IPL, NULL); | |
1070 | break; | |
411ed322 | 1071 | case REIPL_METHOD_FCP_RO_DIAG: |
ff6b8ea6 MH |
1072 | diag308(DIAG308_IPL, NULL); |
1073 | break; | |
411ed322 | 1074 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1075 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1076 | break; |
a0443fbb HB |
1077 | case REIPL_METHOD_NSS_DIAG: |
1078 | diag308(DIAG308_SET, reipl_block_nss); | |
1079 | diag308(DIAG308_IPL, NULL); | |
1080 | break; | |
411ed322 | 1081 | case REIPL_METHOD_NSS: |
a0443fbb | 1082 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1083 | __cpcmd(buf, NULL, 0, NULL); |
1084 | break; | |
411ed322 | 1085 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1086 | if (MACHINE_IS_VM) |
740b5706 | 1087 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 MH |
1088 | diag308(DIAG308_IPL, NULL); |
1089 | break; | |
411ed322 | 1090 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1091 | break; |
ff6b8ea6 | 1092 | } |
208e5591 | 1093 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1094 | } |
1095 | ||
2c2df118 HC |
1096 | static void reipl_run(struct shutdown_trigger *trigger) |
1097 | { | |
1098 | smp_switch_to_ipl_cpu(__reipl_run, NULL); | |
1099 | } | |
1100 | ||
a0443fbb | 1101 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1102 | { |
a0443fbb HB |
1103 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1104 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1105 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1106 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1107 | } | |
ff6b8ea6 | 1108 | |
a0443fbb HB |
1109 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1110 | { | |
1111 | /* LOADPARM */ | |
1112 | /* check if read scp info worked and set loadparm */ | |
1113 | if (sclp_ipl_info.is_valid) | |
1114 | memcpy(ipb->ipl_info.ccw.load_parm, | |
1115 | &sclp_ipl_info.loadparm, LOADPARM_LEN); | |
1116 | else | |
1117 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
1118 | memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN); | |
1119 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; | |
1120 | ||
1121 | /* VM PARM */ | |
1122 | if (MACHINE_IS_VM && diag308_set_works && | |
1123 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1124 | ||
1125 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1126 | ipb->ipl_info.ccw.vm_parm_len = | |
1127 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1128 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1129 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1130 | } | |
ff6b8ea6 MH |
1131 | } |
1132 | ||
99ca4e58 | 1133 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1134 | { |
1135 | int rc; | |
1136 | ||
99ca4e58 MH |
1137 | if (!MACHINE_IS_VM) |
1138 | return 0; | |
a0443fbb HB |
1139 | |
1140 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1141 | if (!reipl_block_nss) | |
1142 | return -ENOMEM; | |
1143 | ||
1144 | if (!diag308_set_works) | |
1145 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1146 | ||
99ca4e58 | 1147 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1148 | if (rc) |
1149 | return rc; | |
a0443fbb HB |
1150 | |
1151 | reipl_block_ccw_init(reipl_block_nss); | |
1152 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1153 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1154 | ' ', NSS_NAME_SIZE); | |
1155 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1156 | kernel_nss_name, strlen(kernel_nss_name)); | |
1157 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1158 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1159 | DIAG308_VM_FLAGS_NSS_VALID; | |
1160 | ||
1161 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1162 | } | |
1163 | ||
fe355b7f HY |
1164 | reipl_capabilities |= IPL_TYPE_NSS; |
1165 | return 0; | |
1166 | } | |
1167 | ||
ff6b8ea6 MH |
1168 | static int __init reipl_ccw_init(void) |
1169 | { | |
1170 | int rc; | |
1171 | ||
1172 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1173 | if (!reipl_block_ccw) | |
1174 | return -ENOMEM; | |
a0443fbb HB |
1175 | |
1176 | if (MACHINE_IS_VM) { | |
1177 | if (!diag308_set_works) | |
1178 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1179 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1180 | &reipl_ccw_attr_group_vm); | |
1181 | } else { | |
1182 | if(!diag308_set_works) | |
1183 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1184 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1185 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1186 | } |
a0443fbb HB |
1187 | if (rc) |
1188 | return rc; | |
1189 | ||
1190 | reipl_block_ccw_init(reipl_block_ccw); | |
1191 | if (ipl_info.type == IPL_TYPE_CCW) { | |
ff6b8ea6 | 1192 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1193 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1194 | } | |
1195 | ||
ff6b8ea6 MH |
1196 | reipl_capabilities |= IPL_TYPE_CCW; |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static int __init reipl_fcp_init(void) | |
1201 | { | |
1202 | int rc; | |
1203 | ||
008d2d11 | 1204 | if (!diag308_set_works) { |
684d2fd4 | 1205 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1206 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1207 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1208 | } else | |
008d2d11 MH |
1209 | return 0; |
1210 | } | |
ff6b8ea6 MH |
1211 | |
1212 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1213 | if (!reipl_block_fcp) | |
1214 | return -ENOMEM; | |
684d2fd4 HB |
1215 | |
1216 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1217 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1218 | &reipl_kset->kobj); | |
1219 | if (!reipl_kset) { | |
1220 | free_page((unsigned long) reipl_block_fcp); | |
1221 | return -ENOMEM; | |
1222 | } | |
1223 | ||
1224 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1225 | if (rc) { |
684d2fd4 HB |
1226 | kset_unregister(reipl_fcp_kset); |
1227 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1228 | return rc; |
1229 | } | |
684d2fd4 HB |
1230 | |
1231 | rc = sysfs_create_bin_file(&reipl_fcp_kset->kobj, | |
1232 | &sys_reipl_fcp_scp_data_attr); | |
1233 | if (rc) { | |
1234 | sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
1235 | kset_unregister(reipl_fcp_kset); | |
1236 | free_page((unsigned long) reipl_block_fcp); | |
1237 | return rc; | |
1238 | } | |
1239 | ||
1240 | if (ipl_info.type == IPL_TYPE_FCP) | |
ff6b8ea6 | 1241 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
684d2fd4 | 1242 | else { |
ff6b8ea6 MH |
1243 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1244 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1245 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1246 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1247 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1248 | } | |
1249 | reipl_capabilities |= IPL_TYPE_FCP; | |
1250 | return 0; | |
1251 | } | |
1252 | ||
2bc89b5e | 1253 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1254 | { |
1255 | int rc; | |
1256 | ||
f62ed9e3 | 1257 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1258 | if (!reipl_kset) |
1259 | return -ENOMEM; | |
1260 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1261 | if (rc) { |
d91885be | 1262 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1263 | return rc; |
1264 | } | |
1265 | rc = reipl_ccw_init(); | |
1266 | if (rc) | |
1267 | return rc; | |
1268 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1269 | if (rc) |
1270 | return rc; | |
1271 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1272 | if (rc) |
1273 | return rc; | |
411ed322 | 1274 | rc = reipl_set_type(ipl_info.type); |
ff6b8ea6 MH |
1275 | if (rc) |
1276 | return rc; | |
1277 | return 0; | |
1278 | } | |
1279 | ||
2bc89b5e HC |
1280 | static struct shutdown_action __refdata reipl_action = { |
1281 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1282 | .fn = reipl_run, | |
1283 | .init = reipl_init, | |
1284 | }; | |
99ca4e58 MH |
1285 | |
1286 | /* | |
1287 | * dump shutdown action: Dump Linux on shutdown. | |
1288 | */ | |
1289 | ||
1290 | /* FCP dump device attributes */ | |
1291 | ||
1292 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", | |
1293 | dump_block_fcp->ipl_info.fcp.wwpn); | |
1294 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", | |
1295 | dump_block_fcp->ipl_info.fcp.lun); | |
1296 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1297 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1298 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1299 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1300 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1301 | dump_block_fcp->ipl_info.fcp.devno); | |
1302 | ||
1303 | static struct attribute *dump_fcp_attrs[] = { | |
1304 | &sys_dump_fcp_device_attr.attr, | |
1305 | &sys_dump_fcp_wwpn_attr.attr, | |
1306 | &sys_dump_fcp_lun_attr.attr, | |
1307 | &sys_dump_fcp_bootprog_attr.attr, | |
1308 | &sys_dump_fcp_br_lba_attr.attr, | |
1309 | NULL, | |
1310 | }; | |
1311 | ||
1312 | static struct attribute_group dump_fcp_attr_group = { | |
1313 | .name = IPL_FCP_STR, | |
1314 | .attrs = dump_fcp_attrs, | |
1315 | }; | |
1316 | ||
1317 | /* CCW dump device attributes */ | |
1318 | ||
1319 | DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1320 | dump_block_ccw->ipl_info.ccw.devno); | |
1321 | ||
1322 | static struct attribute *dump_ccw_attrs[] = { | |
1323 | &sys_dump_ccw_device_attr.attr, | |
1324 | NULL, | |
1325 | }; | |
1326 | ||
1327 | static struct attribute_group dump_ccw_attr_group = { | |
1328 | .name = IPL_CCW_STR, | |
1329 | .attrs = dump_ccw_attrs, | |
1330 | }; | |
1331 | ||
1332 | /* dump type */ | |
1333 | ||
1334 | static int dump_set_type(enum dump_type type) | |
1335 | { | |
1336 | if (!(dump_capabilities & type)) | |
1337 | return -EINVAL; | |
1338 | switch (type) { | |
1339 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1340 | if (diag308_set_works) |
1341 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1342 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1343 | dump_method = DUMP_METHOD_CCW_VM; |
1344 | else | |
1345 | dump_method = DUMP_METHOD_CCW_CIO; | |
1346 | break; | |
1347 | case DUMP_TYPE_FCP: | |
1348 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1349 | break; | |
1350 | default: | |
1351 | dump_method = DUMP_METHOD_NONE; | |
1352 | } | |
1353 | dump_type = type; | |
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | static ssize_t dump_type_show(struct kobject *kobj, | |
1358 | struct kobj_attribute *attr, char *page) | |
1359 | { | |
1360 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1361 | } | |
1362 | ||
1363 | static ssize_t dump_type_store(struct kobject *kobj, | |
1364 | struct kobj_attribute *attr, | |
1365 | const char *buf, size_t len) | |
1366 | { | |
1367 | int rc = -EINVAL; | |
1368 | ||
1369 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1370 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1371 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1372 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1373 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1374 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1375 | return (rc != 0) ? rc : len; | |
1376 | } | |
1377 | ||
1378 | static struct kobj_attribute dump_type_attr = | |
1379 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1380 | ||
1381 | static struct kset *dump_kset; | |
1382 | ||
2c2df118 | 1383 | static void __dump_run(void *unused) |
99ca4e58 MH |
1384 | { |
1385 | struct ccw_dev_id devid; | |
1386 | static char buf[100]; | |
1387 | ||
1388 | switch (dump_method) { | |
1389 | case DUMP_METHOD_CCW_CIO: | |
99ca4e58 MH |
1390 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
1391 | devid.ssid = 0; | |
1392 | reipl_ccw_dev(&devid); | |
1393 | break; | |
1394 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1395 | sprintf(buf, "STORE STATUS"); |
1396 | __cpcmd(buf, NULL, 0, NULL); | |
1397 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1398 | __cpcmd(buf, NULL, 0, NULL); | |
1399 | break; | |
1400 | case DUMP_METHOD_CCW_DIAG: | |
1401 | diag308(DIAG308_SET, dump_block_ccw); | |
1402 | diag308(DIAG308_DUMP, NULL); | |
1403 | break; | |
1404 | case DUMP_METHOD_FCP_DIAG: | |
1405 | diag308(DIAG308_SET, dump_block_fcp); | |
1406 | diag308(DIAG308_DUMP, NULL); | |
1407 | break; | |
2c2df118 HC |
1408 | default: |
1409 | break; | |
99ca4e58 | 1410 | } |
2c2df118 HC |
1411 | } |
1412 | ||
1413 | static void dump_run(struct shutdown_trigger *trigger) | |
1414 | { | |
1415 | if (dump_method == DUMP_METHOD_NONE) | |
1416 | return; | |
1417 | smp_send_stop(); | |
1418 | smp_switch_to_ipl_cpu(__dump_run, NULL); | |
99ca4e58 MH |
1419 | } |
1420 | ||
ff6b8ea6 MH |
1421 | static int __init dump_ccw_init(void) |
1422 | { | |
1423 | int rc; | |
1424 | ||
1425 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1426 | if (!dump_block_ccw) | |
1427 | return -ENOMEM; | |
d91885be | 1428 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1429 | if (rc) { |
1430 | free_page((unsigned long)dump_block_ccw); | |
1431 | return rc; | |
1432 | } | |
1433 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1434 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1435 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1436 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1437 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1438 | return 0; |
1439 | } | |
1440 | ||
ff6b8ea6 MH |
1441 | static int __init dump_fcp_init(void) |
1442 | { | |
1443 | int rc; | |
1444 | ||
05dd2530 | 1445 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1446 | return 0; /* LDIPL DUMP is not installed */ |
1447 | if (!diag308_set_works) | |
1448 | return 0; | |
1449 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1450 | if (!dump_block_fcp) | |
1451 | return -ENOMEM; | |
d91885be | 1452 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1453 | if (rc) { |
1454 | free_page((unsigned long)dump_block_fcp); | |
1455 | return rc; | |
1456 | } | |
1457 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1458 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1459 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1460 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1461 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1462 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1463 | return 0; |
1464 | } | |
1465 | ||
2bc89b5e | 1466 | static int __init dump_init(void) |
ff6b8ea6 MH |
1467 | { |
1468 | int rc; | |
1469 | ||
f62ed9e3 | 1470 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1471 | if (!dump_kset) |
1472 | return -ENOMEM; | |
99ca4e58 | 1473 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1474 | if (rc) { |
d91885be | 1475 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1476 | return rc; |
1477 | } | |
1478 | rc = dump_ccw_init(); | |
1479 | if (rc) | |
1480 | return rc; | |
1481 | rc = dump_fcp_init(); | |
1482 | if (rc) | |
1483 | return rc; | |
411ed322 | 1484 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1485 | return 0; |
1486 | } | |
1487 | ||
2bc89b5e HC |
1488 | static struct shutdown_action __refdata dump_action = { |
1489 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1490 | .fn = dump_run, | |
1491 | .init = dump_init, | |
1492 | }; | |
99ca4e58 | 1493 | |
099b7651 FM |
1494 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1495 | { | |
1496 | preempt_disable(); | |
1497 | /* | |
1498 | * Bypass dynamic address translation (DAT) when storing IPL parameter | |
1499 | * information block address and checksum into the prefix area | |
1500 | * (corresponding to absolute addresses 0-8191). | |
1501 | * When enhanced DAT applies and the STE format control in one, | |
1502 | * the absolute address is formed without prefixing. In this case a | |
1503 | * normal store (stg/st) into the prefix area would no more match to | |
1504 | * absolute addresses 0-8191. | |
1505 | */ | |
1506 | #ifdef CONFIG_64BIT | |
1507 | asm volatile("sturg %0,%1" | |
1508 | :: "a" ((unsigned long) reipl_block_actual), | |
1509 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); | |
1510 | #else | |
1511 | asm volatile("stura %0,%1" | |
1512 | :: "a" ((unsigned long) reipl_block_actual), | |
1513 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); | |
1514 | #endif | |
1515 | asm volatile("stura %0,%1" | |
159d1ff8 FM |
1516 | :: "a" (csum_partial(reipl_block_actual, |
1517 | reipl_block_actual->hdr.len, 0)), | |
099b7651 FM |
1518 | "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum)); |
1519 | preempt_enable(); | |
1520 | dump_run(trigger); | |
1521 | } | |
1522 | ||
1523 | static int __init dump_reipl_init(void) | |
1524 | { | |
1525 | if (!diag308_set_works) | |
1526 | return -EOPNOTSUPP; | |
1527 | else | |
1528 | return 0; | |
1529 | } | |
1530 | ||
1531 | static struct shutdown_action __refdata dump_reipl_action = { | |
1532 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1533 | .fn = dump_reipl_run, | |
1534 | .init = dump_reipl_init, | |
1535 | }; | |
1536 | ||
99ca4e58 MH |
1537 | /* |
1538 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1539 | */ | |
1540 | ||
1541 | static char vmcmd_on_reboot[128]; | |
1542 | static char vmcmd_on_panic[128]; | |
1543 | static char vmcmd_on_halt[128]; | |
1544 | static char vmcmd_on_poff[128]; | |
1545 | ||
1546 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1547 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1548 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1549 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
1550 | ||
1551 | static struct attribute *vmcmd_attrs[] = { | |
1552 | &sys_vmcmd_on_reboot_attr.attr, | |
1553 | &sys_vmcmd_on_panic_attr.attr, | |
1554 | &sys_vmcmd_on_halt_attr.attr, | |
1555 | &sys_vmcmd_on_poff_attr.attr, | |
1556 | NULL, | |
1557 | }; | |
1558 | ||
1559 | static struct attribute_group vmcmd_attr_group = { | |
1560 | .attrs = vmcmd_attrs, | |
1561 | }; | |
1562 | ||
1563 | static struct kset *vmcmd_kset; | |
1564 | ||
1565 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1566 | { |
99ca4e58 MH |
1567 | char *cmd, *next_cmd; |
1568 | ||
1569 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1570 | cmd = vmcmd_on_reboot; | |
1571 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1572 | cmd = vmcmd_on_panic; | |
1573 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1574 | cmd = vmcmd_on_halt; | |
1575 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1576 | cmd = vmcmd_on_poff; | |
1577 | else | |
1578 | return; | |
1579 | ||
1580 | if (strlen(cmd) == 0) | |
1581 | return; | |
1582 | do { | |
1583 | next_cmd = strchr(cmd, '\n'); | |
1584 | if (next_cmd) { | |
1585 | next_cmd[0] = 0; | |
1586 | next_cmd += 1; | |
1587 | } | |
1588 | __cpcmd(cmd, NULL, 0, NULL); | |
1589 | cmd = next_cmd; | |
1590 | } while (cmd != NULL); | |
1591 | } | |
1592 | ||
1593 | static int vmcmd_init(void) | |
1594 | { | |
1595 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1596 | return -EOPNOTSUPP; |
99ca4e58 MH |
1597 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1598 | if (!vmcmd_kset) | |
1599 | return -ENOMEM; | |
1600 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1601 | } | |
1602 | ||
1603 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1604 | vmcmd_run, vmcmd_init}; | |
1605 | ||
1606 | /* | |
1607 | * stop shutdown action: Stop Linux on shutdown. | |
1608 | */ | |
1609 | ||
1610 | static void stop_run(struct shutdown_trigger *trigger) | |
1611 | { | |
c6547497 MH |
1612 | if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
1613 | disabled_wait((unsigned long) __builtin_return_address(0)); | |
a93b8ec1 | 1614 | while (sigp(smp_processor_id(), sigp_stop) == sigp_busy) |
f8501ba7 HC |
1615 | cpu_relax(); |
1616 | for (;;); | |
99ca4e58 MH |
1617 | } |
1618 | ||
1619 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1620 | stop_run, NULL}; | |
1621 | ||
1622 | /* action list */ | |
1623 | ||
1624 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1625 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1626 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1627 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1628 | ||
1629 | /* | |
1630 | * Trigger section | |
1631 | */ | |
1632 | ||
1633 | static struct kset *shutdown_actions_kset; | |
1634 | ||
1635 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1636 | size_t len) | |
1637 | { | |
1638 | int i; | |
099b7651 | 1639 | |
99ca4e58 | 1640 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1641 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1642 | if (shutdown_actions_list[i]->init_rc) { |
1643 | return shutdown_actions_list[i]->init_rc; | |
1644 | } else { | |
1645 | trigger->action = shutdown_actions_list[i]; | |
1646 | return len; | |
1647 | } | |
99ca4e58 MH |
1648 | } |
1649 | } | |
1650 | return -EINVAL; | |
1651 | } | |
1652 | ||
1653 | /* on reipl */ | |
1654 | ||
1655 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1656 | &reipl_action}; | |
1657 | ||
1658 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1659 | struct kobj_attribute *attr, char *page) | |
1660 | { | |
1661 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1662 | } | |
1663 | ||
1664 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1665 | struct kobj_attribute *attr, | |
1666 | const char *buf, size_t len) | |
1667 | { | |
1668 | return set_trigger(buf, &on_reboot_trigger, len); | |
1669 | } | |
1670 | ||
1671 | static struct kobj_attribute on_reboot_attr = | |
1672 | __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store); | |
1673 | ||
1674 | static void do_machine_restart(char *__unused) | |
1675 | { | |
1676 | smp_send_stop(); | |
1677 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1678 | reipl_run(NULL); | |
1679 | } | |
1680 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1681 | ||
1682 | /* on panic */ | |
1683 | ||
1684 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1685 | ||
1686 | static ssize_t on_panic_show(struct kobject *kobj, | |
1687 | struct kobj_attribute *attr, char *page) | |
1688 | { | |
1689 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1690 | } | |
1691 | ||
1692 | static ssize_t on_panic_store(struct kobject *kobj, | |
1693 | struct kobj_attribute *attr, | |
1694 | const char *buf, size_t len) | |
1695 | { | |
1696 | return set_trigger(buf, &on_panic_trigger, len); | |
1697 | } | |
1698 | ||
1699 | static struct kobj_attribute on_panic_attr = | |
1700 | __ATTR(on_panic, 0644, on_panic_show, on_panic_store); | |
1701 | ||
1702 | static void do_panic(void) | |
1703 | { | |
1704 | on_panic_trigger.action->fn(&on_panic_trigger); | |
1705 | stop_run(&on_panic_trigger); | |
1706 | } | |
1707 | ||
1708 | /* on halt */ | |
1709 | ||
1710 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1711 | ||
1712 | static ssize_t on_halt_show(struct kobject *kobj, | |
1713 | struct kobj_attribute *attr, char *page) | |
1714 | { | |
1715 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1716 | } | |
1717 | ||
1718 | static ssize_t on_halt_store(struct kobject *kobj, | |
1719 | struct kobj_attribute *attr, | |
1720 | const char *buf, size_t len) | |
1721 | { | |
1722 | return set_trigger(buf, &on_halt_trigger, len); | |
1723 | } | |
1724 | ||
1725 | static struct kobj_attribute on_halt_attr = | |
1726 | __ATTR(on_halt, 0644, on_halt_show, on_halt_store); | |
ff6b8ea6 | 1727 | |
99ca4e58 MH |
1728 | |
1729 | static void do_machine_halt(void) | |
1730 | { | |
1731 | smp_send_stop(); | |
1732 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1733 | stop_run(&on_halt_trigger); | |
1734 | } | |
1735 | void (*_machine_halt)(void) = do_machine_halt; | |
1736 | ||
1737 | /* on power off */ | |
1738 | ||
1739 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1740 | ||
1741 | static ssize_t on_poff_show(struct kobject *kobj, | |
1742 | struct kobj_attribute *attr, char *page) | |
1743 | { | |
1744 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1745 | } | |
1746 | ||
1747 | static ssize_t on_poff_store(struct kobject *kobj, | |
1748 | struct kobj_attribute *attr, | |
1749 | const char *buf, size_t len) | |
1750 | { | |
1751 | return set_trigger(buf, &on_poff_trigger, len); | |
1752 | } | |
1753 | ||
1754 | static struct kobj_attribute on_poff_attr = | |
1755 | __ATTR(on_poff, 0644, on_poff_show, on_poff_store); | |
1756 | ||
1757 | ||
1758 | static void do_machine_power_off(void) | |
1759 | { | |
1760 | smp_send_stop(); | |
1761 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1762 | stop_run(&on_poff_trigger); | |
1763 | } | |
1764 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1765 | ||
1766 | static void __init shutdown_triggers_init(void) | |
1767 | { | |
d91885be | 1768 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1769 | firmware_kobj); |
d91885be | 1770 | if (!shutdown_actions_kset) |
99ca4e58 MH |
1771 | goto fail; |
1772 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1773 | &on_reboot_attr.attr)) | |
1774 | goto fail; | |
1775 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1776 | &on_panic_attr.attr)) | |
1777 | goto fail; | |
1778 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1779 | &on_halt_attr.attr)) | |
1780 | goto fail; | |
1781 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1782 | &on_poff_attr.attr)) | |
1783 | goto fail; | |
1784 | ||
1785 | return; | |
1786 | fail: | |
1787 | panic("shutdown_triggers_init failed\n"); | |
1788 | } | |
1789 | ||
1790 | static void __init shutdown_actions_init(void) | |
1791 | { | |
1792 | int i; | |
1793 | ||
1794 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1795 | if (!shutdown_actions_list[i]->init) | |
1796 | continue; | |
81088819 FM |
1797 | shutdown_actions_list[i]->init_rc = |
1798 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1799 | } |
ff6b8ea6 MH |
1800 | } |
1801 | ||
1802 | static int __init s390_ipl_init(void) | |
1803 | { | |
d09293ae | 1804 | sclp_get_ipl_info(&sclp_ipl_info); |
99ca4e58 MH |
1805 | shutdown_actions_init(); |
1806 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1807 | return 0; |
1808 | } | |
1809 | ||
1810 | __initcall(s390_ipl_init); | |
15e9b586 | 1811 | |
99ca4e58 MH |
1812 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1813 | { | |
1814 | int sx, dx; | |
1815 | ||
1816 | dx = 0; | |
1817 | for (sx = 0; src[sx] != 0; sx++) { | |
1818 | if (src[sx] == '"') | |
1819 | continue; | |
1820 | dst[dx++] = src[sx]; | |
1821 | if (dx >= n) | |
1822 | break; | |
1823 | } | |
1824 | } | |
1825 | ||
1826 | static int __init vmcmd_on_reboot_setup(char *str) | |
1827 | { | |
1828 | if (!MACHINE_IS_VM) | |
1829 | return 1; | |
1830 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1831 | vmcmd_on_reboot[127] = 0; | |
1832 | on_reboot_trigger.action = &vmcmd_action; | |
1833 | return 1; | |
1834 | } | |
1835 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1836 | ||
1837 | static int __init vmcmd_on_panic_setup(char *str) | |
1838 | { | |
1839 | if (!MACHINE_IS_VM) | |
1840 | return 1; | |
1841 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1842 | vmcmd_on_panic[127] = 0; | |
1843 | on_panic_trigger.action = &vmcmd_action; | |
1844 | return 1; | |
1845 | } | |
1846 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1847 | ||
1848 | static int __init vmcmd_on_halt_setup(char *str) | |
1849 | { | |
1850 | if (!MACHINE_IS_VM) | |
1851 | return 1; | |
1852 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1853 | vmcmd_on_halt[127] = 0; | |
1854 | on_halt_trigger.action = &vmcmd_action; | |
1855 | return 1; | |
1856 | } | |
1857 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1858 | ||
1859 | static int __init vmcmd_on_poff_setup(char *str) | |
1860 | { | |
1861 | if (!MACHINE_IS_VM) | |
1862 | return 1; | |
1863 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1864 | vmcmd_on_poff[127] = 0; | |
1865 | on_poff_trigger.action = &vmcmd_action; | |
1866 | return 1; | |
1867 | } | |
1868 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1869 | ||
1870 | static int on_panic_notify(struct notifier_block *self, | |
1871 | unsigned long event, void *data) | |
1872 | { | |
1873 | do_panic(); | |
1874 | return NOTIFY_OK; | |
1875 | } | |
1876 | ||
1877 | static struct notifier_block on_panic_nb = { | |
1878 | .notifier_call = on_panic_notify, | |
7e9b580e | 1879 | .priority = INT_MIN, |
99ca4e58 MH |
1880 | }; |
1881 | ||
1882 | void __init setup_ipl(void) | |
1883 | { | |
1884 | ipl_info.type = get_ipl_type(); | |
1885 | switch (ipl_info.type) { | |
1886 | case IPL_TYPE_CCW: | |
1887 | ipl_info.data.ccw.dev_id.devno = ipl_devno; | |
1888 | ipl_info.data.ccw.dev_id.ssid = 0; | |
1889 | break; | |
1890 | case IPL_TYPE_FCP: | |
1891 | case IPL_TYPE_FCP_DUMP: | |
1892 | ipl_info.data.fcp.dev_id.devno = | |
1893 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
1894 | ipl_info.data.fcp.dev_id.ssid = 0; | |
1895 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; | |
1896 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1897 | break; | |
1898 | case IPL_TYPE_NSS: | |
1899 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1900 | sizeof(ipl_info.data.nss.name)); | |
1901 | break; | |
1902 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1903 | /* We have no info to copy */ |
1904 | break; | |
1905 | } | |
1906 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1907 | } | |
1908 | ||
a0443fbb HB |
1909 | void __init ipl_update_parameters(void) |
1910 | { | |
3a95e8eb MH |
1911 | int rc; |
1912 | ||
1913 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1914 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1915 | diag308_set_works = 1; |
1916 | } | |
1917 | ||
6fc321fd HC |
1918 | void __init ipl_save_parameters(void) |
1919 | { | |
1920 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1921 | void *src, *dst; |
1922 | ||
1923 | if (cio_get_iplinfo(&iplinfo)) | |
1924 | return; | |
1925 | ||
1926 | ipl_devno = iplinfo.devno; | |
1927 | ipl_flags |= IPL_DEVNO_VALID; | |
1928 | if (!iplinfo.is_qdio) | |
1929 | return; | |
1930 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
cbb870c8 | 1931 | src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr; |
6fc321fd HC |
1932 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
1933 | memmove(dst, src, PAGE_SIZE); | |
cbb870c8 | 1934 | S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN; |
6fc321fd HC |
1935 | } |
1936 | ||
15e9b586 HC |
1937 | static LIST_HEAD(rcall); |
1938 | static DEFINE_MUTEX(rcall_mutex); | |
1939 | ||
1940 | void register_reset_call(struct reset_call *reset) | |
1941 | { | |
1942 | mutex_lock(&rcall_mutex); | |
1943 | list_add(&reset->list, &rcall); | |
1944 | mutex_unlock(&rcall_mutex); | |
1945 | } | |
1946 | EXPORT_SYMBOL_GPL(register_reset_call); | |
1947 | ||
1948 | void unregister_reset_call(struct reset_call *reset) | |
1949 | { | |
1950 | mutex_lock(&rcall_mutex); | |
1951 | list_del(&reset->list); | |
1952 | mutex_unlock(&rcall_mutex); | |
1953 | } | |
1954 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
1955 | ||
1956 | static void do_reset_calls(void) | |
1957 | { | |
1958 | struct reset_call *reset; | |
1959 | ||
1960 | list_for_each_entry(reset, &rcall, list) | |
1961 | reset->fn(); | |
1962 | } | |
1963 | ||
c5dd8586 | 1964 | u32 dump_prefix_page; |
15e9b586 HC |
1965 | |
1966 | void s390_reset_system(void) | |
1967 | { | |
1968 | struct _lowcore *lc; | |
1969 | ||
15e9b586 | 1970 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
1971 | |
1972 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
1973 | lc->panic_stack = S390_lowcore.panic_stack; |
1974 | ||
da1cf23e | 1975 | /* Save prefix page address for dump case */ |
c5dd8586 | 1976 | dump_prefix_page = (u32)(unsigned long) lc; |
da1cf23e | 1977 | |
15e9b586 HC |
1978 | /* Disable prefixing */ |
1979 | set_prefix(0); | |
1980 | ||
1981 | /* Disable lowcore protection */ | |
1982 | __ctl_clear_bit(0,28); | |
1983 | ||
1984 | /* Set new machine check handler */ | |
c1821c2e | 1985 | S390_lowcore.mcck_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
15e9b586 | 1986 | S390_lowcore.mcck_new_psw.addr = |
ab14de6c | 1987 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
1988 | |
1989 | /* Set new program check handler */ | |
c1821c2e | 1990 | S390_lowcore.program_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
a45e1414 | 1991 | S390_lowcore.program_new_psw.addr = |
ab14de6c | 1992 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 1993 | |
15e9b586 HC |
1994 | do_reset_calls(); |
1995 | } | |
99ca4e58 | 1996 |