Commit | Line | Data |
---|---|---|
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 | ||
2c3c8bea CW |
406 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
407 | struct bin_attribute *attr, char *buf, | |
408 | loff_t off, size_t count) | |
ff6b8ea6 | 409 | { |
0788fea4 AM |
410 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
411 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 MH |
412 | } |
413 | ||
414 | static struct bin_attribute ipl_parameter_attr = { | |
415 | .attr = { | |
416 | .name = "binary_parameter", | |
417 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
418 | }, |
419 | .size = PAGE_SIZE, | |
420 | .read = &ipl_parameter_read, | |
421 | }; | |
422 | ||
2c3c8bea CW |
423 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
424 | struct bin_attribute *attr, char *buf, | |
425 | loff_t off, size_t count) | |
ff6b8ea6 MH |
426 | { |
427 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
428 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
429 | ||
0788fea4 | 430 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 MH |
431 | } |
432 | ||
433 | static struct bin_attribute ipl_scp_data_attr = { | |
434 | .attr = { | |
435 | .name = "scp_data", | |
436 | .mode = S_IRUGO, | |
ff6b8ea6 MH |
437 | }, |
438 | .size = PAGE_SIZE, | |
05bd711e | 439 | .read = ipl_scp_data_read, |
ff6b8ea6 MH |
440 | }; |
441 | ||
442 | /* FCP ipl device attributes */ | |
443 | ||
444 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
445 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
446 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
447 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
448 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
449 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
450 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
451 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
452 | ||
453 | static struct attribute *ipl_fcp_attrs[] = { | |
454 | &sys_ipl_type_attr.attr, | |
455 | &sys_ipl_device_attr.attr, | |
456 | &sys_ipl_fcp_wwpn_attr.attr, | |
457 | &sys_ipl_fcp_lun_attr.attr, | |
458 | &sys_ipl_fcp_bootprog_attr.attr, | |
459 | &sys_ipl_fcp_br_lba_attr.attr, | |
460 | NULL, | |
461 | }; | |
462 | ||
463 | static struct attribute_group ipl_fcp_attr_group = { | |
464 | .attrs = ipl_fcp_attrs, | |
465 | }; | |
466 | ||
467 | /* CCW ipl device attributes */ | |
468 | ||
9b949165 GKH |
469 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
470 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
471 | { |
472 | char loadparm[LOADPARM_LEN + 1] = {}; | |
473 | ||
05dd2530 | 474 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 475 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 476 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 477 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 478 | strim(loadparm); |
03a4d208 MH |
479 | return sprintf(page, "%s\n", loadparm); |
480 | } | |
481 | ||
9b949165 | 482 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
483 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
484 | ||
a0443fbb HB |
485 | static struct attribute *ipl_ccw_attrs_vm[] = { |
486 | &sys_ipl_type_attr.attr, | |
487 | &sys_ipl_device_attr.attr, | |
488 | &sys_ipl_ccw_loadparm_attr.attr, | |
489 | &sys_ipl_vm_parm_attr.attr, | |
490 | NULL, | |
491 | }; | |
492 | ||
493 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
494 | &sys_ipl_type_attr.attr, |
495 | &sys_ipl_device_attr.attr, | |
03a4d208 | 496 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
497 | NULL, |
498 | }; | |
499 | ||
a0443fbb HB |
500 | static struct attribute_group ipl_ccw_attr_group_vm = { |
501 | .attrs = ipl_ccw_attrs_vm, | |
502 | }; | |
503 | ||
504 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
505 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
506 | }; |
507 | ||
fe355b7f HY |
508 | /* NSS ipl device attributes */ |
509 | ||
510 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
511 | ||
512 | static struct attribute *ipl_nss_attrs[] = { | |
513 | &sys_ipl_type_attr.attr, | |
514 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
515 | &sys_ipl_ccw_loadparm_attr.attr, |
516 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
517 | NULL, |
518 | }; | |
519 | ||
520 | static struct attribute_group ipl_nss_attr_group = { | |
521 | .attrs = ipl_nss_attrs, | |
522 | }; | |
523 | ||
ff6b8ea6 MH |
524 | /* UNKNOWN ipl device attributes */ |
525 | ||
526 | static struct attribute *ipl_unknown_attrs[] = { | |
527 | &sys_ipl_type_attr.attr, | |
528 | NULL, | |
529 | }; | |
530 | ||
531 | static struct attribute_group ipl_unknown_attr_group = { | |
532 | .attrs = ipl_unknown_attrs, | |
533 | }; | |
534 | ||
d91885be | 535 | static struct kset *ipl_kset; |
ff6b8ea6 | 536 | |
99ca4e58 MH |
537 | static int __init ipl_register_fcp_files(void) |
538 | { | |
539 | int rc; | |
540 | ||
541 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
542 | if (rc) | |
543 | goto out; | |
544 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
545 | if (rc) | |
546 | goto out_ipl_parm; | |
547 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr); | |
548 | if (!rc) | |
549 | goto out; | |
550 | ||
551 | sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); | |
552 | ||
553 | out_ipl_parm: | |
554 | sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group); | |
555 | out: | |
556 | return rc; | |
557 | } | |
558 | ||
2c2df118 | 559 | static void __ipl_run(void *unused) |
99ca4e58 MH |
560 | { |
561 | diag308(DIAG308_IPL, NULL); | |
562 | if (MACHINE_IS_VM) | |
563 | __cpcmd("IPL", NULL, 0, NULL); | |
564 | else if (ipl_info.type == IPL_TYPE_CCW) | |
565 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
566 | } | |
567 | ||
2c2df118 HC |
568 | static void ipl_run(struct shutdown_trigger *trigger) |
569 | { | |
570 | smp_switch_to_ipl_cpu(__ipl_run, NULL); | |
571 | } | |
572 | ||
2bc89b5e | 573 | static int __init ipl_init(void) |
99ca4e58 MH |
574 | { |
575 | int rc; | |
576 | ||
577 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
578 | if (!ipl_kset) { | |
579 | rc = -ENOMEM; | |
580 | goto out; | |
581 | } | |
582 | switch (ipl_info.type) { | |
583 | case IPL_TYPE_CCW: | |
a0443fbb HB |
584 | if (MACHINE_IS_VM) |
585 | rc = sysfs_create_group(&ipl_kset->kobj, | |
586 | &ipl_ccw_attr_group_vm); | |
587 | else | |
588 | rc = sysfs_create_group(&ipl_kset->kobj, | |
589 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
590 | break; |
591 | case IPL_TYPE_FCP: | |
592 | case IPL_TYPE_FCP_DUMP: | |
593 | rc = ipl_register_fcp_files(); | |
594 | break; | |
595 | case IPL_TYPE_NSS: | |
596 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
597 | break; | |
598 | default: | |
599 | rc = sysfs_create_group(&ipl_kset->kobj, | |
600 | &ipl_unknown_attr_group); | |
601 | break; | |
602 | } | |
603 | out: | |
604 | if (rc) | |
605 | panic("ipl_init failed: rc = %i\n", rc); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
2bc89b5e HC |
610 | static struct shutdown_action __refdata ipl_action = { |
611 | .name = SHUTDOWN_ACTION_IPL_STR, | |
612 | .fn = ipl_run, | |
613 | .init = ipl_init, | |
614 | }; | |
99ca4e58 | 615 | |
ff6b8ea6 | 616 | /* |
99ca4e58 | 617 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
618 | */ |
619 | ||
a0443fbb HB |
620 | /* VM IPL PARM attributes */ |
621 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
622 | char *page) | |
623 | { | |
624 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
625 | ||
684d2fd4 | 626 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
627 | return sprintf(page, "%s\n", vmparm); |
628 | } | |
629 | ||
630 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
631 | size_t vmparm_max, | |
632 | const char *buf, size_t len) | |
633 | { | |
634 | int i, ip_len; | |
635 | ||
636 | /* ignore trailing newline */ | |
637 | ip_len = len; | |
638 | if ((len > 0) && (buf[len - 1] == '\n')) | |
639 | ip_len--; | |
640 | ||
641 | if (ip_len > vmparm_max) | |
642 | return -EINVAL; | |
643 | ||
644 | /* parm is used to store kernel options, check for common chars */ | |
645 | for (i = 0; i < ip_len; i++) | |
646 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
647 | return -EINVAL; | |
648 | ||
649 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
650 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
651 | if (ip_len > 0) { | |
652 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
653 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
654 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
655 | } else { | |
656 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
657 | } | |
658 | ||
659 | return len; | |
660 | } | |
661 | ||
662 | /* NSS wrapper */ | |
663 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
664 | struct kobj_attribute *attr, char *page) | |
665 | { | |
666 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
667 | } | |
668 | ||
669 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
670 | struct kobj_attribute *attr, | |
671 | const char *buf, size_t len) | |
672 | { | |
673 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
674 | } | |
675 | ||
676 | /* CCW wrapper */ | |
677 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
678 | struct kobj_attribute *attr, char *page) | |
679 | { | |
680 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
681 | } | |
682 | ||
683 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
684 | struct kobj_attribute *attr, | |
685 | const char *buf, size_t len) | |
686 | { | |
687 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
688 | } | |
689 | ||
690 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
691 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
692 | reipl_nss_vmparm_store); | |
693 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
694 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
695 | reipl_ccw_vmparm_store); | |
696 | ||
ff6b8ea6 MH |
697 | /* FCP reipl device attributes */ |
698 | ||
2c3c8bea | 699 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
700 | struct bin_attribute *attr, |
701 | char *buf, loff_t off, size_t count) | |
702 | { | |
703 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
704 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
705 | ||
706 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
707 | } | |
708 | ||
2c3c8bea | 709 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
710 | struct bin_attribute *attr, |
711 | char *buf, loff_t off, size_t count) | |
712 | { | |
713 | size_t padding; | |
714 | size_t scpdata_len; | |
715 | ||
716 | if (off < 0) | |
717 | return -EINVAL; | |
718 | ||
719 | if (off >= DIAG308_SCPDATA_SIZE) | |
720 | return -ENOSPC; | |
721 | ||
722 | if (count > DIAG308_SCPDATA_SIZE - off) | |
723 | count = DIAG308_SCPDATA_SIZE - off; | |
724 | ||
725 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf + off, count); | |
726 | scpdata_len = off + count; | |
727 | ||
728 | if (scpdata_len % 8) { | |
729 | padding = 8 - (scpdata_len % 8); | |
730 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
731 | 0, padding); | |
732 | scpdata_len += padding; | |
733 | } | |
734 | ||
735 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
736 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
737 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
738 | ||
739 | return count; | |
740 | } | |
741 | ||
742 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = { | |
743 | .attr = { | |
744 | .name = "scp_data", | |
745 | .mode = S_IRUGO | S_IWUSR, | |
746 | }, | |
747 | .size = PAGE_SIZE, | |
748 | .read = reipl_fcp_scpdata_read, | |
749 | .write = reipl_fcp_scpdata_write, | |
750 | }; | |
751 | ||
ff6b8ea6 MH |
752 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
753 | reipl_block_fcp->ipl_info.fcp.wwpn); | |
754 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", | |
755 | reipl_block_fcp->ipl_info.fcp.lun); | |
756 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
757 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
758 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
759 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
760 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
761 | reipl_block_fcp->ipl_info.fcp.devno); | |
762 | ||
763 | static struct attribute *reipl_fcp_attrs[] = { | |
764 | &sys_reipl_fcp_device_attr.attr, | |
765 | &sys_reipl_fcp_wwpn_attr.attr, | |
766 | &sys_reipl_fcp_lun_attr.attr, | |
767 | &sys_reipl_fcp_bootprog_attr.attr, | |
768 | &sys_reipl_fcp_br_lba_attr.attr, | |
769 | NULL, | |
770 | }; | |
771 | ||
772 | static struct attribute_group reipl_fcp_attr_group = { | |
ff6b8ea6 MH |
773 | .attrs = reipl_fcp_attrs, |
774 | }; | |
775 | ||
776 | /* CCW reipl device attributes */ | |
777 | ||
778 | DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
779 | reipl_block_ccw->ipl_info.ccw.devno); | |
780 | ||
a0443fbb HB |
781 | static void reipl_get_ascii_loadparm(char *loadparm, |
782 | struct ipl_parameter_block *ibp) | |
03a4d208 | 783 | { |
a0443fbb | 784 | memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN); |
03a4d208 MH |
785 | EBCASC(loadparm, LOADPARM_LEN); |
786 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 787 | strim(loadparm); |
03a4d208 MH |
788 | } |
789 | ||
a0443fbb HB |
790 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
791 | char *page) | |
03a4d208 MH |
792 | { |
793 | char buf[LOADPARM_LEN + 1]; | |
794 | ||
a0443fbb | 795 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
796 | return sprintf(page, "%s\n", buf); |
797 | } | |
798 | ||
a0443fbb HB |
799 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
800 | const char *buf, size_t len) | |
03a4d208 MH |
801 | { |
802 | int i, lp_len; | |
803 | ||
804 | /* ignore trailing newline */ | |
805 | lp_len = len; | |
806 | if ((len > 0) && (buf[len - 1] == '\n')) | |
807 | lp_len--; | |
808 | /* loadparm can have max 8 characters and must not start with a blank */ | |
809 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
810 | return -EINVAL; | |
811 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
812 | for (i = 0; i < lp_len; i++) { | |
813 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
814 | (buf[i] == '.')) | |
815 | continue; | |
816 | return -EINVAL; | |
817 | } | |
818 | /* initialize loadparm with blanks */ | |
a0443fbb | 819 | memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN); |
03a4d208 | 820 | /* copy and convert to ebcdic */ |
a0443fbb HB |
821 | memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len); |
822 | ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN); | |
03a4d208 MH |
823 | return len; |
824 | } | |
825 | ||
a0443fbb HB |
826 | /* NSS wrapper */ |
827 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
828 | struct kobj_attribute *attr, char *page) | |
829 | { | |
830 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
831 | } | |
832 | ||
833 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
834 | struct kobj_attribute *attr, | |
835 | const char *buf, size_t len) | |
836 | { | |
837 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
838 | } | |
839 | ||
840 | /* CCW wrapper */ | |
841 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
842 | struct kobj_attribute *attr, char *page) | |
843 | { | |
844 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
845 | } | |
846 | ||
847 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
848 | struct kobj_attribute *attr, | |
849 | const char *buf, size_t len) | |
850 | { | |
851 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
852 | } | |
853 | ||
9b949165 | 854 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
855 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
856 | reipl_ccw_loadparm_store); | |
857 | ||
858 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
859 | &sys_reipl_ccw_device_attr.attr, | |
860 | &sys_reipl_ccw_loadparm_attr.attr, | |
861 | &sys_reipl_ccw_vmparm_attr.attr, | |
862 | NULL, | |
863 | }; | |
03a4d208 | 864 | |
a0443fbb | 865 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 866 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 867 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
868 | NULL, |
869 | }; | |
870 | ||
a0443fbb | 871 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 872 | .name = IPL_CCW_STR, |
a0443fbb HB |
873 | .attrs = reipl_ccw_attrs_vm, |
874 | }; | |
875 | ||
876 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
877 | .name = IPL_CCW_STR, | |
878 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
879 | }; |
880 | ||
fe355b7f HY |
881 | |
882 | /* NSS reipl device attributes */ | |
a0443fbb HB |
883 | static void reipl_get_ascii_nss_name(char *dst, |
884 | struct ipl_parameter_block *ipb) | |
885 | { | |
886 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
887 | EBCASC(dst, NSS_NAME_SIZE); | |
888 | dst[NSS_NAME_SIZE] = 0; | |
889 | } | |
890 | ||
891 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
892 | struct kobj_attribute *attr, char *page) | |
893 | { | |
894 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
895 | ||
896 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
897 | return sprintf(page, "%s\n", nss_name); | |
898 | } | |
899 | ||
900 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
901 | struct kobj_attribute *attr, | |
902 | const char *buf, size_t len) | |
903 | { | |
904 | int nss_len; | |
905 | ||
906 | /* ignore trailing newline */ | |
907 | nss_len = len; | |
908 | if ((len > 0) && (buf[len - 1] == '\n')) | |
909 | nss_len--; | |
fe355b7f | 910 | |
a0443fbb HB |
911 | if (nss_len > NSS_NAME_SIZE) |
912 | return -EINVAL; | |
913 | ||
914 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
915 | if (nss_len > 0) { | |
916 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
917 | DIAG308_VM_FLAGS_NSS_VALID; | |
918 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
919 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
920 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
921 | } else { | |
922 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
923 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
924 | } | |
925 | ||
926 | return len; | |
927 | } | |
928 | ||
929 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
930 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
931 | reipl_nss_name_store); | |
932 | ||
933 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
934 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
935 | reipl_nss_loadparm_store); | |
fe355b7f HY |
936 | |
937 | static struct attribute *reipl_nss_attrs[] = { | |
938 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
939 | &sys_reipl_nss_loadparm_attr.attr, |
940 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
941 | NULL, |
942 | }; | |
943 | ||
944 | static struct attribute_group reipl_nss_attr_group = { | |
945 | .name = IPL_NSS_STR, | |
946 | .attrs = reipl_nss_attrs, | |
947 | }; | |
948 | ||
ff6b8ea6 MH |
949 | /* reipl type */ |
950 | ||
951 | static int reipl_set_type(enum ipl_type type) | |
952 | { | |
953 | if (!(reipl_capabilities & type)) | |
954 | return -EINVAL; | |
955 | ||
956 | switch(type) { | |
957 | case IPL_TYPE_CCW: | |
48657d22 MH |
958 | if (diag308_set_works) |
959 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
960 | else if (MACHINE_IS_VM) | |
411ed322 | 961 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 962 | else |
411ed322 | 963 | reipl_method = REIPL_METHOD_CCW_CIO; |
099b7651 | 964 | reipl_block_actual = reipl_block_ccw; |
ff6b8ea6 MH |
965 | break; |
966 | case IPL_TYPE_FCP: | |
967 | if (diag308_set_works) | |
411ed322 | 968 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 969 | else if (MACHINE_IS_VM) |
411ed322 | 970 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 971 | else |
411ed322 | 972 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
099b7651 | 973 | reipl_block_actual = reipl_block_fcp; |
411ed322 MH |
974 | break; |
975 | case IPL_TYPE_FCP_DUMP: | |
976 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 977 | break; |
fe355b7f | 978 | case IPL_TYPE_NSS: |
a0443fbb HB |
979 | if (diag308_set_works) |
980 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
981 | else | |
982 | reipl_method = REIPL_METHOD_NSS; | |
099b7651 | 983 | reipl_block_actual = reipl_block_nss; |
411ed322 MH |
984 | break; |
985 | case IPL_TYPE_UNKNOWN: | |
986 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 987 | break; |
ff6b8ea6 | 988 | default: |
411ed322 | 989 | BUG(); |
ff6b8ea6 MH |
990 | } |
991 | reipl_type = type; | |
992 | return 0; | |
993 | } | |
994 | ||
9b949165 GKH |
995 | static ssize_t reipl_type_show(struct kobject *kobj, |
996 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
997 | { |
998 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
999 | } | |
1000 | ||
9b949165 GKH |
1001 | static ssize_t reipl_type_store(struct kobject *kobj, |
1002 | struct kobj_attribute *attr, | |
1003 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1004 | { |
1005 | int rc = -EINVAL; | |
1006 | ||
1007 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1008 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1009 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1010 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1011 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1012 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1013 | return (rc != 0) ? rc : len; |
1014 | } | |
1015 | ||
9b949165 | 1016 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1017 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1018 | |
d91885be | 1019 | static struct kset *reipl_kset; |
684d2fd4 | 1020 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1021 | |
a0443fbb HB |
1022 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1023 | const enum ipl_method m) | |
1024 | { | |
1025 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1026 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1027 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1028 | size_t pos = 0; | |
1029 | ||
1030 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1031 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1032 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1033 | |
1034 | switch (m) { | |
1035 | case REIPL_METHOD_CCW_VM: | |
1036 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1037 | break; | |
1038 | case REIPL_METHOD_NSS: | |
1039 | pos = sprintf(dst, "IPL %s", nss_name); | |
1040 | break; | |
1041 | default: | |
1042 | break; | |
1043 | } | |
1044 | if (strlen(loadparm) > 0) | |
1045 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1046 | if (strlen(vmparm) > 0) | |
1047 | sprintf(dst + pos, " PARM %s", vmparm); | |
1048 | } | |
1049 | ||
2c2df118 | 1050 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1051 | { |
1052 | struct ccw_dev_id devid; | |
a0443fbb | 1053 | static char buf[128]; |
ff6b8ea6 | 1054 | |
ff6b8ea6 | 1055 | switch (reipl_method) { |
411ed322 | 1056 | case REIPL_METHOD_CCW_CIO: |
ff6b8ea6 MH |
1057 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
1058 | devid.ssid = 0; | |
1059 | reipl_ccw_dev(&devid); | |
1060 | break; | |
411ed322 | 1061 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1062 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1063 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1064 | break; |
411ed322 | 1065 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 MH |
1066 | diag308(DIAG308_SET, reipl_block_ccw); |
1067 | diag308(DIAG308_IPL, NULL); | |
1068 | break; | |
411ed322 | 1069 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 MH |
1070 | diag308(DIAG308_SET, reipl_block_fcp); |
1071 | diag308(DIAG308_IPL, NULL); | |
1072 | break; | |
411ed322 | 1073 | case REIPL_METHOD_FCP_RO_DIAG: |
ff6b8ea6 MH |
1074 | diag308(DIAG308_IPL, NULL); |
1075 | break; | |
411ed322 | 1076 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1077 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1078 | break; |
a0443fbb HB |
1079 | case REIPL_METHOD_NSS_DIAG: |
1080 | diag308(DIAG308_SET, reipl_block_nss); | |
1081 | diag308(DIAG308_IPL, NULL); | |
1082 | break; | |
411ed322 | 1083 | case REIPL_METHOD_NSS: |
a0443fbb | 1084 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1085 | __cpcmd(buf, NULL, 0, NULL); |
1086 | break; | |
411ed322 | 1087 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1088 | if (MACHINE_IS_VM) |
740b5706 | 1089 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 MH |
1090 | diag308(DIAG308_IPL, NULL); |
1091 | break; | |
411ed322 | 1092 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1093 | break; |
ff6b8ea6 | 1094 | } |
208e5591 | 1095 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1096 | } |
1097 | ||
2c2df118 HC |
1098 | static void reipl_run(struct shutdown_trigger *trigger) |
1099 | { | |
1100 | smp_switch_to_ipl_cpu(__reipl_run, NULL); | |
1101 | } | |
1102 | ||
a0443fbb | 1103 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1104 | { |
a0443fbb HB |
1105 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1106 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1107 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1108 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1109 | } | |
ff6b8ea6 | 1110 | |
a0443fbb HB |
1111 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1112 | { | |
1113 | /* LOADPARM */ | |
1114 | /* check if read scp info worked and set loadparm */ | |
1115 | if (sclp_ipl_info.is_valid) | |
1116 | memcpy(ipb->ipl_info.ccw.load_parm, | |
1117 | &sclp_ipl_info.loadparm, LOADPARM_LEN); | |
1118 | else | |
1119 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
1120 | memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN); | |
1121 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; | |
1122 | ||
1123 | /* VM PARM */ | |
1124 | if (MACHINE_IS_VM && diag308_set_works && | |
1125 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1126 | ||
1127 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1128 | ipb->ipl_info.ccw.vm_parm_len = | |
1129 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1130 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1131 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1132 | } | |
ff6b8ea6 MH |
1133 | } |
1134 | ||
99ca4e58 | 1135 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1136 | { |
1137 | int rc; | |
1138 | ||
99ca4e58 MH |
1139 | if (!MACHINE_IS_VM) |
1140 | return 0; | |
a0443fbb HB |
1141 | |
1142 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1143 | if (!reipl_block_nss) | |
1144 | return -ENOMEM; | |
1145 | ||
1146 | if (!diag308_set_works) | |
1147 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1148 | ||
99ca4e58 | 1149 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1150 | if (rc) |
1151 | return rc; | |
a0443fbb HB |
1152 | |
1153 | reipl_block_ccw_init(reipl_block_nss); | |
1154 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1155 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1156 | ' ', NSS_NAME_SIZE); | |
1157 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1158 | kernel_nss_name, strlen(kernel_nss_name)); | |
1159 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1160 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1161 | DIAG308_VM_FLAGS_NSS_VALID; | |
1162 | ||
1163 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1164 | } | |
1165 | ||
fe355b7f HY |
1166 | reipl_capabilities |= IPL_TYPE_NSS; |
1167 | return 0; | |
1168 | } | |
1169 | ||
ff6b8ea6 MH |
1170 | static int __init reipl_ccw_init(void) |
1171 | { | |
1172 | int rc; | |
1173 | ||
1174 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1175 | if (!reipl_block_ccw) | |
1176 | return -ENOMEM; | |
a0443fbb HB |
1177 | |
1178 | if (MACHINE_IS_VM) { | |
1179 | if (!diag308_set_works) | |
1180 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1181 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1182 | &reipl_ccw_attr_group_vm); | |
1183 | } else { | |
1184 | if(!diag308_set_works) | |
1185 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1186 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1187 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1188 | } |
a0443fbb HB |
1189 | if (rc) |
1190 | return rc; | |
1191 | ||
1192 | reipl_block_ccw_init(reipl_block_ccw); | |
1193 | if (ipl_info.type == IPL_TYPE_CCW) { | |
ff6b8ea6 | 1194 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1195 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1196 | } | |
1197 | ||
ff6b8ea6 MH |
1198 | reipl_capabilities |= IPL_TYPE_CCW; |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | static int __init reipl_fcp_init(void) | |
1203 | { | |
1204 | int rc; | |
1205 | ||
008d2d11 | 1206 | if (!diag308_set_works) { |
684d2fd4 | 1207 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1208 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1209 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1210 | } else | |
008d2d11 MH |
1211 | return 0; |
1212 | } | |
ff6b8ea6 MH |
1213 | |
1214 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1215 | if (!reipl_block_fcp) | |
1216 | return -ENOMEM; | |
684d2fd4 HB |
1217 | |
1218 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1219 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1220 | &reipl_kset->kobj); | |
1221 | if (!reipl_kset) { | |
1222 | free_page((unsigned long) reipl_block_fcp); | |
1223 | return -ENOMEM; | |
1224 | } | |
1225 | ||
1226 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1227 | if (rc) { |
684d2fd4 HB |
1228 | kset_unregister(reipl_fcp_kset); |
1229 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1230 | return rc; |
1231 | } | |
684d2fd4 HB |
1232 | |
1233 | rc = sysfs_create_bin_file(&reipl_fcp_kset->kobj, | |
1234 | &sys_reipl_fcp_scp_data_attr); | |
1235 | if (rc) { | |
1236 | sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
1237 | kset_unregister(reipl_fcp_kset); | |
1238 | free_page((unsigned long) reipl_block_fcp); | |
1239 | return rc; | |
1240 | } | |
1241 | ||
1242 | if (ipl_info.type == IPL_TYPE_FCP) | |
ff6b8ea6 | 1243 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
684d2fd4 | 1244 | else { |
ff6b8ea6 MH |
1245 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1246 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1247 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1248 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1249 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1250 | } | |
1251 | reipl_capabilities |= IPL_TYPE_FCP; | |
1252 | return 0; | |
1253 | } | |
1254 | ||
2bc89b5e | 1255 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1256 | { |
1257 | int rc; | |
1258 | ||
f62ed9e3 | 1259 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1260 | if (!reipl_kset) |
1261 | return -ENOMEM; | |
1262 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1263 | if (rc) { |
d91885be | 1264 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1265 | return rc; |
1266 | } | |
1267 | rc = reipl_ccw_init(); | |
1268 | if (rc) | |
1269 | return rc; | |
1270 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1271 | if (rc) |
1272 | return rc; | |
1273 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1274 | if (rc) |
1275 | return rc; | |
411ed322 | 1276 | rc = reipl_set_type(ipl_info.type); |
ff6b8ea6 MH |
1277 | if (rc) |
1278 | return rc; | |
1279 | return 0; | |
1280 | } | |
1281 | ||
2bc89b5e HC |
1282 | static struct shutdown_action __refdata reipl_action = { |
1283 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1284 | .fn = reipl_run, | |
1285 | .init = reipl_init, | |
1286 | }; | |
99ca4e58 MH |
1287 | |
1288 | /* | |
1289 | * dump shutdown action: Dump Linux on shutdown. | |
1290 | */ | |
1291 | ||
1292 | /* FCP dump device attributes */ | |
1293 | ||
1294 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", | |
1295 | dump_block_fcp->ipl_info.fcp.wwpn); | |
1296 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", | |
1297 | dump_block_fcp->ipl_info.fcp.lun); | |
1298 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1299 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1300 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1301 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1302 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1303 | dump_block_fcp->ipl_info.fcp.devno); | |
1304 | ||
1305 | static struct attribute *dump_fcp_attrs[] = { | |
1306 | &sys_dump_fcp_device_attr.attr, | |
1307 | &sys_dump_fcp_wwpn_attr.attr, | |
1308 | &sys_dump_fcp_lun_attr.attr, | |
1309 | &sys_dump_fcp_bootprog_attr.attr, | |
1310 | &sys_dump_fcp_br_lba_attr.attr, | |
1311 | NULL, | |
1312 | }; | |
1313 | ||
1314 | static struct attribute_group dump_fcp_attr_group = { | |
1315 | .name = IPL_FCP_STR, | |
1316 | .attrs = dump_fcp_attrs, | |
1317 | }; | |
1318 | ||
1319 | /* CCW dump device attributes */ | |
1320 | ||
1321 | DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1322 | dump_block_ccw->ipl_info.ccw.devno); | |
1323 | ||
1324 | static struct attribute *dump_ccw_attrs[] = { | |
1325 | &sys_dump_ccw_device_attr.attr, | |
1326 | NULL, | |
1327 | }; | |
1328 | ||
1329 | static struct attribute_group dump_ccw_attr_group = { | |
1330 | .name = IPL_CCW_STR, | |
1331 | .attrs = dump_ccw_attrs, | |
1332 | }; | |
1333 | ||
1334 | /* dump type */ | |
1335 | ||
1336 | static int dump_set_type(enum dump_type type) | |
1337 | { | |
1338 | if (!(dump_capabilities & type)) | |
1339 | return -EINVAL; | |
1340 | switch (type) { | |
1341 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1342 | if (diag308_set_works) |
1343 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1344 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1345 | dump_method = DUMP_METHOD_CCW_VM; |
1346 | else | |
1347 | dump_method = DUMP_METHOD_CCW_CIO; | |
1348 | break; | |
1349 | case DUMP_TYPE_FCP: | |
1350 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1351 | break; | |
1352 | default: | |
1353 | dump_method = DUMP_METHOD_NONE; | |
1354 | } | |
1355 | dump_type = type; | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | static ssize_t dump_type_show(struct kobject *kobj, | |
1360 | struct kobj_attribute *attr, char *page) | |
1361 | { | |
1362 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1363 | } | |
1364 | ||
1365 | static ssize_t dump_type_store(struct kobject *kobj, | |
1366 | struct kobj_attribute *attr, | |
1367 | const char *buf, size_t len) | |
1368 | { | |
1369 | int rc = -EINVAL; | |
1370 | ||
1371 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1372 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1373 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1374 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1375 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1376 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1377 | return (rc != 0) ? rc : len; | |
1378 | } | |
1379 | ||
1380 | static struct kobj_attribute dump_type_attr = | |
1381 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1382 | ||
1383 | static struct kset *dump_kset; | |
1384 | ||
2c2df118 | 1385 | static void __dump_run(void *unused) |
99ca4e58 MH |
1386 | { |
1387 | struct ccw_dev_id devid; | |
1388 | static char buf[100]; | |
1389 | ||
1390 | switch (dump_method) { | |
1391 | case DUMP_METHOD_CCW_CIO: | |
99ca4e58 MH |
1392 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
1393 | devid.ssid = 0; | |
1394 | reipl_ccw_dev(&devid); | |
1395 | break; | |
1396 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1397 | sprintf(buf, "STORE STATUS"); |
1398 | __cpcmd(buf, NULL, 0, NULL); | |
1399 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1400 | __cpcmd(buf, NULL, 0, NULL); | |
1401 | break; | |
1402 | case DUMP_METHOD_CCW_DIAG: | |
1403 | diag308(DIAG308_SET, dump_block_ccw); | |
1404 | diag308(DIAG308_DUMP, NULL); | |
1405 | break; | |
1406 | case DUMP_METHOD_FCP_DIAG: | |
1407 | diag308(DIAG308_SET, dump_block_fcp); | |
1408 | diag308(DIAG308_DUMP, NULL); | |
1409 | break; | |
2c2df118 HC |
1410 | default: |
1411 | break; | |
99ca4e58 | 1412 | } |
2c2df118 HC |
1413 | } |
1414 | ||
1415 | static void dump_run(struct shutdown_trigger *trigger) | |
1416 | { | |
1417 | if (dump_method == DUMP_METHOD_NONE) | |
1418 | return; | |
1419 | smp_send_stop(); | |
1420 | smp_switch_to_ipl_cpu(__dump_run, NULL); | |
99ca4e58 MH |
1421 | } |
1422 | ||
ff6b8ea6 MH |
1423 | static int __init dump_ccw_init(void) |
1424 | { | |
1425 | int rc; | |
1426 | ||
1427 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1428 | if (!dump_block_ccw) | |
1429 | return -ENOMEM; | |
d91885be | 1430 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1431 | if (rc) { |
1432 | free_page((unsigned long)dump_block_ccw); | |
1433 | return rc; | |
1434 | } | |
1435 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1436 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1437 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1438 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1439 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1440 | return 0; |
1441 | } | |
1442 | ||
ff6b8ea6 MH |
1443 | static int __init dump_fcp_init(void) |
1444 | { | |
1445 | int rc; | |
1446 | ||
05dd2530 | 1447 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1448 | return 0; /* LDIPL DUMP is not installed */ |
1449 | if (!diag308_set_works) | |
1450 | return 0; | |
1451 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1452 | if (!dump_block_fcp) | |
1453 | return -ENOMEM; | |
d91885be | 1454 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1455 | if (rc) { |
1456 | free_page((unsigned long)dump_block_fcp); | |
1457 | return rc; | |
1458 | } | |
1459 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1460 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1461 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1462 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1463 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1464 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1465 | return 0; |
1466 | } | |
1467 | ||
2bc89b5e | 1468 | static int __init dump_init(void) |
ff6b8ea6 MH |
1469 | { |
1470 | int rc; | |
1471 | ||
f62ed9e3 | 1472 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1473 | if (!dump_kset) |
1474 | return -ENOMEM; | |
99ca4e58 | 1475 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1476 | if (rc) { |
d91885be | 1477 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1478 | return rc; |
1479 | } | |
1480 | rc = dump_ccw_init(); | |
1481 | if (rc) | |
1482 | return rc; | |
1483 | rc = dump_fcp_init(); | |
1484 | if (rc) | |
1485 | return rc; | |
411ed322 | 1486 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1487 | return 0; |
1488 | } | |
1489 | ||
2bc89b5e HC |
1490 | static struct shutdown_action __refdata dump_action = { |
1491 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1492 | .fn = dump_run, | |
1493 | .init = dump_init, | |
1494 | }; | |
99ca4e58 | 1495 | |
099b7651 FM |
1496 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1497 | { | |
1498 | preempt_disable(); | |
1499 | /* | |
1500 | * Bypass dynamic address translation (DAT) when storing IPL parameter | |
1501 | * information block address and checksum into the prefix area | |
1502 | * (corresponding to absolute addresses 0-8191). | |
1503 | * When enhanced DAT applies and the STE format control in one, | |
1504 | * the absolute address is formed without prefixing. In this case a | |
1505 | * normal store (stg/st) into the prefix area would no more match to | |
1506 | * absolute addresses 0-8191. | |
1507 | */ | |
1508 | #ifdef CONFIG_64BIT | |
1509 | asm volatile("sturg %0,%1" | |
1510 | :: "a" ((unsigned long) reipl_block_actual), | |
1511 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); | |
1512 | #else | |
1513 | asm volatile("stura %0,%1" | |
1514 | :: "a" ((unsigned long) reipl_block_actual), | |
1515 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); | |
1516 | #endif | |
1517 | asm volatile("stura %0,%1" | |
159d1ff8 FM |
1518 | :: "a" (csum_partial(reipl_block_actual, |
1519 | reipl_block_actual->hdr.len, 0)), | |
099b7651 FM |
1520 | "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum)); |
1521 | preempt_enable(); | |
1522 | dump_run(trigger); | |
1523 | } | |
1524 | ||
1525 | static int __init dump_reipl_init(void) | |
1526 | { | |
1527 | if (!diag308_set_works) | |
1528 | return -EOPNOTSUPP; | |
1529 | else | |
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | static struct shutdown_action __refdata dump_reipl_action = { | |
1534 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1535 | .fn = dump_reipl_run, | |
1536 | .init = dump_reipl_init, | |
1537 | }; | |
1538 | ||
99ca4e58 MH |
1539 | /* |
1540 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1541 | */ | |
1542 | ||
1543 | static char vmcmd_on_reboot[128]; | |
1544 | static char vmcmd_on_panic[128]; | |
1545 | static char vmcmd_on_halt[128]; | |
1546 | static char vmcmd_on_poff[128]; | |
1547 | ||
1548 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1549 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1550 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1551 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
1552 | ||
1553 | static struct attribute *vmcmd_attrs[] = { | |
1554 | &sys_vmcmd_on_reboot_attr.attr, | |
1555 | &sys_vmcmd_on_panic_attr.attr, | |
1556 | &sys_vmcmd_on_halt_attr.attr, | |
1557 | &sys_vmcmd_on_poff_attr.attr, | |
1558 | NULL, | |
1559 | }; | |
1560 | ||
1561 | static struct attribute_group vmcmd_attr_group = { | |
1562 | .attrs = vmcmd_attrs, | |
1563 | }; | |
1564 | ||
1565 | static struct kset *vmcmd_kset; | |
1566 | ||
1567 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1568 | { |
99ca4e58 MH |
1569 | char *cmd, *next_cmd; |
1570 | ||
1571 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1572 | cmd = vmcmd_on_reboot; | |
1573 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1574 | cmd = vmcmd_on_panic; | |
1575 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1576 | cmd = vmcmd_on_halt; | |
1577 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1578 | cmd = vmcmd_on_poff; | |
1579 | else | |
1580 | return; | |
1581 | ||
1582 | if (strlen(cmd) == 0) | |
1583 | return; | |
1584 | do { | |
1585 | next_cmd = strchr(cmd, '\n'); | |
1586 | if (next_cmd) { | |
1587 | next_cmd[0] = 0; | |
1588 | next_cmd += 1; | |
1589 | } | |
1590 | __cpcmd(cmd, NULL, 0, NULL); | |
1591 | cmd = next_cmd; | |
1592 | } while (cmd != NULL); | |
1593 | } | |
1594 | ||
1595 | static int vmcmd_init(void) | |
1596 | { | |
1597 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1598 | return -EOPNOTSUPP; |
99ca4e58 MH |
1599 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1600 | if (!vmcmd_kset) | |
1601 | return -ENOMEM; | |
1602 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1603 | } | |
1604 | ||
1605 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1606 | vmcmd_run, vmcmd_init}; | |
1607 | ||
1608 | /* | |
1609 | * stop shutdown action: Stop Linux on shutdown. | |
1610 | */ | |
1611 | ||
1612 | static void stop_run(struct shutdown_trigger *trigger) | |
1613 | { | |
c6547497 MH |
1614 | if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
1615 | disabled_wait((unsigned long) __builtin_return_address(0)); | |
a93b8ec1 | 1616 | while (sigp(smp_processor_id(), sigp_stop) == sigp_busy) |
f8501ba7 HC |
1617 | cpu_relax(); |
1618 | for (;;); | |
99ca4e58 MH |
1619 | } |
1620 | ||
1621 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1622 | stop_run, NULL}; | |
1623 | ||
1624 | /* action list */ | |
1625 | ||
1626 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1627 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1628 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1629 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1630 | ||
1631 | /* | |
1632 | * Trigger section | |
1633 | */ | |
1634 | ||
1635 | static struct kset *shutdown_actions_kset; | |
1636 | ||
1637 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1638 | size_t len) | |
1639 | { | |
1640 | int i; | |
099b7651 | 1641 | |
99ca4e58 | 1642 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1643 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1644 | if (shutdown_actions_list[i]->init_rc) { |
1645 | return shutdown_actions_list[i]->init_rc; | |
1646 | } else { | |
1647 | trigger->action = shutdown_actions_list[i]; | |
1648 | return len; | |
1649 | } | |
99ca4e58 MH |
1650 | } |
1651 | } | |
1652 | return -EINVAL; | |
1653 | } | |
1654 | ||
1655 | /* on reipl */ | |
1656 | ||
1657 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1658 | &reipl_action}; | |
1659 | ||
1660 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1661 | struct kobj_attribute *attr, char *page) | |
1662 | { | |
1663 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1664 | } | |
1665 | ||
1666 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1667 | struct kobj_attribute *attr, | |
1668 | const char *buf, size_t len) | |
1669 | { | |
1670 | return set_trigger(buf, &on_reboot_trigger, len); | |
1671 | } | |
1672 | ||
1673 | static struct kobj_attribute on_reboot_attr = | |
1674 | __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store); | |
1675 | ||
1676 | static void do_machine_restart(char *__unused) | |
1677 | { | |
1678 | smp_send_stop(); | |
1679 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1680 | reipl_run(NULL); | |
1681 | } | |
1682 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1683 | ||
1684 | /* on panic */ | |
1685 | ||
1686 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1687 | ||
1688 | static ssize_t on_panic_show(struct kobject *kobj, | |
1689 | struct kobj_attribute *attr, char *page) | |
1690 | { | |
1691 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1692 | } | |
1693 | ||
1694 | static ssize_t on_panic_store(struct kobject *kobj, | |
1695 | struct kobj_attribute *attr, | |
1696 | const char *buf, size_t len) | |
1697 | { | |
1698 | return set_trigger(buf, &on_panic_trigger, len); | |
1699 | } | |
1700 | ||
1701 | static struct kobj_attribute on_panic_attr = | |
1702 | __ATTR(on_panic, 0644, on_panic_show, on_panic_store); | |
1703 | ||
1704 | static void do_panic(void) | |
1705 | { | |
1706 | on_panic_trigger.action->fn(&on_panic_trigger); | |
1707 | stop_run(&on_panic_trigger); | |
1708 | } | |
1709 | ||
1710 | /* on halt */ | |
1711 | ||
1712 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1713 | ||
1714 | static ssize_t on_halt_show(struct kobject *kobj, | |
1715 | struct kobj_attribute *attr, char *page) | |
1716 | { | |
1717 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1718 | } | |
1719 | ||
1720 | static ssize_t on_halt_store(struct kobject *kobj, | |
1721 | struct kobj_attribute *attr, | |
1722 | const char *buf, size_t len) | |
1723 | { | |
1724 | return set_trigger(buf, &on_halt_trigger, len); | |
1725 | } | |
1726 | ||
1727 | static struct kobj_attribute on_halt_attr = | |
1728 | __ATTR(on_halt, 0644, on_halt_show, on_halt_store); | |
ff6b8ea6 | 1729 | |
99ca4e58 MH |
1730 | |
1731 | static void do_machine_halt(void) | |
1732 | { | |
1733 | smp_send_stop(); | |
1734 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1735 | stop_run(&on_halt_trigger); | |
1736 | } | |
1737 | void (*_machine_halt)(void) = do_machine_halt; | |
1738 | ||
1739 | /* on power off */ | |
1740 | ||
1741 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1742 | ||
1743 | static ssize_t on_poff_show(struct kobject *kobj, | |
1744 | struct kobj_attribute *attr, char *page) | |
1745 | { | |
1746 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1747 | } | |
1748 | ||
1749 | static ssize_t on_poff_store(struct kobject *kobj, | |
1750 | struct kobj_attribute *attr, | |
1751 | const char *buf, size_t len) | |
1752 | { | |
1753 | return set_trigger(buf, &on_poff_trigger, len); | |
1754 | } | |
1755 | ||
1756 | static struct kobj_attribute on_poff_attr = | |
1757 | __ATTR(on_poff, 0644, on_poff_show, on_poff_store); | |
1758 | ||
1759 | ||
1760 | static void do_machine_power_off(void) | |
1761 | { | |
1762 | smp_send_stop(); | |
1763 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1764 | stop_run(&on_poff_trigger); | |
1765 | } | |
1766 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1767 | ||
1768 | static void __init shutdown_triggers_init(void) | |
1769 | { | |
d91885be | 1770 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1771 | firmware_kobj); |
d91885be | 1772 | if (!shutdown_actions_kset) |
99ca4e58 MH |
1773 | goto fail; |
1774 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1775 | &on_reboot_attr.attr)) | |
1776 | goto fail; | |
1777 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1778 | &on_panic_attr.attr)) | |
1779 | goto fail; | |
1780 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1781 | &on_halt_attr.attr)) | |
1782 | goto fail; | |
1783 | if (sysfs_create_file(&shutdown_actions_kset->kobj, | |
1784 | &on_poff_attr.attr)) | |
1785 | goto fail; | |
1786 | ||
1787 | return; | |
1788 | fail: | |
1789 | panic("shutdown_triggers_init failed\n"); | |
1790 | } | |
1791 | ||
1792 | static void __init shutdown_actions_init(void) | |
1793 | { | |
1794 | int i; | |
1795 | ||
1796 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1797 | if (!shutdown_actions_list[i]->init) | |
1798 | continue; | |
81088819 FM |
1799 | shutdown_actions_list[i]->init_rc = |
1800 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1801 | } |
ff6b8ea6 MH |
1802 | } |
1803 | ||
1804 | static int __init s390_ipl_init(void) | |
1805 | { | |
d09293ae | 1806 | sclp_get_ipl_info(&sclp_ipl_info); |
99ca4e58 MH |
1807 | shutdown_actions_init(); |
1808 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1809 | return 0; |
1810 | } | |
1811 | ||
1812 | __initcall(s390_ipl_init); | |
15e9b586 | 1813 | |
99ca4e58 MH |
1814 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1815 | { | |
1816 | int sx, dx; | |
1817 | ||
1818 | dx = 0; | |
1819 | for (sx = 0; src[sx] != 0; sx++) { | |
1820 | if (src[sx] == '"') | |
1821 | continue; | |
1822 | dst[dx++] = src[sx]; | |
1823 | if (dx >= n) | |
1824 | break; | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | static int __init vmcmd_on_reboot_setup(char *str) | |
1829 | { | |
1830 | if (!MACHINE_IS_VM) | |
1831 | return 1; | |
1832 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1833 | vmcmd_on_reboot[127] = 0; | |
1834 | on_reboot_trigger.action = &vmcmd_action; | |
1835 | return 1; | |
1836 | } | |
1837 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1838 | ||
1839 | static int __init vmcmd_on_panic_setup(char *str) | |
1840 | { | |
1841 | if (!MACHINE_IS_VM) | |
1842 | return 1; | |
1843 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1844 | vmcmd_on_panic[127] = 0; | |
1845 | on_panic_trigger.action = &vmcmd_action; | |
1846 | return 1; | |
1847 | } | |
1848 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1849 | ||
1850 | static int __init vmcmd_on_halt_setup(char *str) | |
1851 | { | |
1852 | if (!MACHINE_IS_VM) | |
1853 | return 1; | |
1854 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1855 | vmcmd_on_halt[127] = 0; | |
1856 | on_halt_trigger.action = &vmcmd_action; | |
1857 | return 1; | |
1858 | } | |
1859 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1860 | ||
1861 | static int __init vmcmd_on_poff_setup(char *str) | |
1862 | { | |
1863 | if (!MACHINE_IS_VM) | |
1864 | return 1; | |
1865 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1866 | vmcmd_on_poff[127] = 0; | |
1867 | on_poff_trigger.action = &vmcmd_action; | |
1868 | return 1; | |
1869 | } | |
1870 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1871 | ||
1872 | static int on_panic_notify(struct notifier_block *self, | |
1873 | unsigned long event, void *data) | |
1874 | { | |
1875 | do_panic(); | |
1876 | return NOTIFY_OK; | |
1877 | } | |
1878 | ||
1879 | static struct notifier_block on_panic_nb = { | |
1880 | .notifier_call = on_panic_notify, | |
7e9b580e | 1881 | .priority = INT_MIN, |
99ca4e58 MH |
1882 | }; |
1883 | ||
1884 | void __init setup_ipl(void) | |
1885 | { | |
1886 | ipl_info.type = get_ipl_type(); | |
1887 | switch (ipl_info.type) { | |
1888 | case IPL_TYPE_CCW: | |
1889 | ipl_info.data.ccw.dev_id.devno = ipl_devno; | |
1890 | ipl_info.data.ccw.dev_id.ssid = 0; | |
1891 | break; | |
1892 | case IPL_TYPE_FCP: | |
1893 | case IPL_TYPE_FCP_DUMP: | |
1894 | ipl_info.data.fcp.dev_id.devno = | |
1895 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
1896 | ipl_info.data.fcp.dev_id.ssid = 0; | |
1897 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; | |
1898 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1899 | break; | |
1900 | case IPL_TYPE_NSS: | |
1901 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1902 | sizeof(ipl_info.data.nss.name)); | |
1903 | break; | |
1904 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1905 | /* We have no info to copy */ |
1906 | break; | |
1907 | } | |
1908 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1909 | } | |
1910 | ||
a0443fbb HB |
1911 | void __init ipl_update_parameters(void) |
1912 | { | |
3a95e8eb MH |
1913 | int rc; |
1914 | ||
1915 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1916 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1917 | diag308_set_works = 1; |
1918 | } | |
1919 | ||
6fc321fd HC |
1920 | void __init ipl_save_parameters(void) |
1921 | { | |
1922 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1923 | void *src, *dst; |
1924 | ||
1925 | if (cio_get_iplinfo(&iplinfo)) | |
1926 | return; | |
1927 | ||
1928 | ipl_devno = iplinfo.devno; | |
1929 | ipl_flags |= IPL_DEVNO_VALID; | |
1930 | if (!iplinfo.is_qdio) | |
1931 | return; | |
1932 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
cbb870c8 | 1933 | src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr; |
6fc321fd HC |
1934 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
1935 | memmove(dst, src, PAGE_SIZE); | |
cbb870c8 | 1936 | S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN; |
6fc321fd HC |
1937 | } |
1938 | ||
15e9b586 HC |
1939 | static LIST_HEAD(rcall); |
1940 | static DEFINE_MUTEX(rcall_mutex); | |
1941 | ||
1942 | void register_reset_call(struct reset_call *reset) | |
1943 | { | |
1944 | mutex_lock(&rcall_mutex); | |
1945 | list_add(&reset->list, &rcall); | |
1946 | mutex_unlock(&rcall_mutex); | |
1947 | } | |
1948 | EXPORT_SYMBOL_GPL(register_reset_call); | |
1949 | ||
1950 | void unregister_reset_call(struct reset_call *reset) | |
1951 | { | |
1952 | mutex_lock(&rcall_mutex); | |
1953 | list_del(&reset->list); | |
1954 | mutex_unlock(&rcall_mutex); | |
1955 | } | |
1956 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
1957 | ||
1958 | static void do_reset_calls(void) | |
1959 | { | |
1960 | struct reset_call *reset; | |
1961 | ||
1962 | list_for_each_entry(reset, &rcall, list) | |
1963 | reset->fn(); | |
1964 | } | |
1965 | ||
c5dd8586 | 1966 | u32 dump_prefix_page; |
15e9b586 HC |
1967 | |
1968 | void s390_reset_system(void) | |
1969 | { | |
1970 | struct _lowcore *lc; | |
1971 | ||
15e9b586 | 1972 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
1973 | |
1974 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
1975 | lc->panic_stack = S390_lowcore.panic_stack; |
1976 | ||
da1cf23e | 1977 | /* Save prefix page address for dump case */ |
c5dd8586 | 1978 | dump_prefix_page = (u32)(unsigned long) lc; |
da1cf23e | 1979 | |
15e9b586 HC |
1980 | /* Disable prefixing */ |
1981 | set_prefix(0); | |
1982 | ||
1983 | /* Disable lowcore protection */ | |
1984 | __ctl_clear_bit(0,28); | |
1985 | ||
1986 | /* Set new machine check handler */ | |
c1821c2e | 1987 | S390_lowcore.mcck_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
15e9b586 | 1988 | S390_lowcore.mcck_new_psw.addr = |
ab14de6c | 1989 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
1990 | |
1991 | /* Set new program check handler */ | |
c1821c2e | 1992 | S390_lowcore.program_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
a45e1414 | 1993 | S390_lowcore.program_new_psw.addr = |
ab14de6c | 1994 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 1995 | |
15e9b586 HC |
1996 | do_reset_calls(); |
1997 | } | |
99ca4e58 | 1998 |