Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1 | /* |
| 2 | * arch/s390/kernel/ipl.c |
| 3 | * ipl/reipl/dump support for Linux on s390. |
| 4 | * |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 5 | * Copyright IBM Corp. 2005,2007 |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 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> |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 16 | #include <linux/ctype.h> |
Akinobu Mita | 0788fea | 2008-07-14 09:59:17 +0200 | [diff] [blame] | 17 | #include <linux/fs.h> |
Michael Holzheu | 46b05d2 | 2007-02-21 10:55:21 +0100 | [diff] [blame] | 18 | #include <asm/ipl.h> |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 19 | #include <asm/smp.h> |
| 20 | #include <asm/setup.h> |
| 21 | #include <asm/cpcmd.h> |
| 22 | #include <asm/cio.h> |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 23 | #include <asm/ebcdic.h> |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 24 | #include <asm/reset.h> |
Heiko Carstens | ab14de6 | 2007-02-05 21:18:37 +0100 | [diff] [blame] | 25 | #include <asm/sclp.h> |
Heiko Carstens | 3bd5f3e | 2009-04-23 13:58:06 +0200 | [diff] [blame] | 26 | #include <asm/sigp.h> |
Frank Munzert | 159d1ff | 2009-03-26 15:24:45 +0100 | [diff] [blame] | 27 | #include <asm/checksum.h> |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 28 | |
| 29 | #define IPL_PARM_BLOCK_VERSION 0 |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 30 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 31 | #define IPL_UNKNOWN_STR "unknown" |
| 32 | #define IPL_CCW_STR "ccw" |
| 33 | #define IPL_FCP_STR "fcp" |
| 34 | #define IPL_FCP_DUMP_STR "fcp_dump" |
| 35 | #define IPL_NSS_STR "nss" |
Heiko Carstens | 615b04b | 2007-02-21 10:55:37 +0100 | [diff] [blame] | 36 | |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 37 | #define DUMP_CCW_STR "ccw" |
| 38 | #define DUMP_FCP_STR "fcp" |
| 39 | #define DUMP_NONE_STR "none" |
| 40 | |
| 41 | /* |
| 42 | * Four shutdown trigger types are supported: |
| 43 | * - panic |
| 44 | * - halt |
| 45 | * - power off |
| 46 | * - reipl |
| 47 | */ |
| 48 | #define ON_PANIC_STR "on_panic" |
| 49 | #define ON_HALT_STR "on_halt" |
| 50 | #define ON_POFF_STR "on_poff" |
| 51 | #define ON_REIPL_STR "on_reboot" |
| 52 | |
| 53 | struct shutdown_action; |
| 54 | struct shutdown_trigger { |
| 55 | char *name; |
| 56 | struct shutdown_action *action; |
| 57 | }; |
| 58 | |
| 59 | /* |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 60 | * The following shutdown action types are supported: |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 61 | */ |
| 62 | #define SHUTDOWN_ACTION_IPL_STR "ipl" |
| 63 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" |
| 64 | #define SHUTDOWN_ACTION_DUMP_STR "dump" |
| 65 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" |
| 66 | #define SHUTDOWN_ACTION_STOP_STR "stop" |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 67 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 68 | |
| 69 | struct shutdown_action { |
| 70 | char *name; |
| 71 | void (*fn) (struct shutdown_trigger *trigger); |
| 72 | int (*init) (void); |
| 73 | }; |
| 74 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 75 | static char *ipl_type_str(enum ipl_type type) |
| 76 | { |
| 77 | switch (type) { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 78 | case IPL_TYPE_CCW: |
| 79 | return IPL_CCW_STR; |
| 80 | case IPL_TYPE_FCP: |
| 81 | return IPL_FCP_STR; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 82 | case IPL_TYPE_FCP_DUMP: |
| 83 | return IPL_FCP_DUMP_STR; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 84 | case IPL_TYPE_NSS: |
| 85 | return IPL_NSS_STR; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 86 | case IPL_TYPE_UNKNOWN: |
| 87 | default: |
| 88 | return IPL_UNKNOWN_STR; |
| 89 | } |
| 90 | } |
| 91 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 92 | enum dump_type { |
| 93 | DUMP_TYPE_NONE = 1, |
| 94 | DUMP_TYPE_CCW = 2, |
| 95 | DUMP_TYPE_FCP = 4, |
| 96 | }; |
| 97 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 98 | static char *dump_type_str(enum dump_type type) |
| 99 | { |
| 100 | switch (type) { |
| 101 | case DUMP_TYPE_NONE: |
| 102 | return DUMP_NONE_STR; |
| 103 | case DUMP_TYPE_CCW: |
| 104 | return DUMP_CCW_STR; |
| 105 | case DUMP_TYPE_FCP: |
| 106 | return DUMP_FCP_STR; |
| 107 | default: |
| 108 | return NULL; |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | /* |
| 113 | * Must be in data section since the bss section |
| 114 | * is not cleared when these are accessed. |
| 115 | */ |
| 116 | static u16 ipl_devno __attribute__((__section__(".data"))) = 0; |
| 117 | u32 ipl_flags __attribute__((__section__(".data"))) = 0; |
| 118 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 119 | enum ipl_method { |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 120 | REIPL_METHOD_CCW_CIO, |
| 121 | REIPL_METHOD_CCW_DIAG, |
| 122 | REIPL_METHOD_CCW_VM, |
| 123 | REIPL_METHOD_FCP_RO_DIAG, |
| 124 | REIPL_METHOD_FCP_RW_DIAG, |
| 125 | REIPL_METHOD_FCP_RO_VM, |
| 126 | REIPL_METHOD_FCP_DUMP, |
| 127 | REIPL_METHOD_NSS, |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 128 | REIPL_METHOD_NSS_DIAG, |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 129 | REIPL_METHOD_DEFAULT, |
| 130 | }; |
| 131 | |
| 132 | enum dump_method { |
| 133 | DUMP_METHOD_NONE, |
| 134 | DUMP_METHOD_CCW_CIO, |
| 135 | DUMP_METHOD_CCW_DIAG, |
| 136 | DUMP_METHOD_CCW_VM, |
| 137 | DUMP_METHOD_FCP_DIAG, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 138 | }; |
| 139 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 140 | static int diag308_set_works = 0; |
| 141 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 142 | static struct ipl_parameter_block ipl_block; |
| 143 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 144 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 145 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 146 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 147 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 148 | static struct ipl_parameter_block *reipl_block_fcp; |
| 149 | static struct ipl_parameter_block *reipl_block_ccw; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 150 | static struct ipl_parameter_block *reipl_block_nss; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 151 | static struct ipl_parameter_block *reipl_block_actual; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 152 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 153 | static int dump_capabilities = DUMP_TYPE_NONE; |
| 154 | static enum dump_type dump_type = DUMP_TYPE_NONE; |
| 155 | static enum dump_method dump_method = DUMP_METHOD_NONE; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 156 | static struct ipl_parameter_block *dump_block_fcp; |
| 157 | static struct ipl_parameter_block *dump_block_ccw; |
| 158 | |
Heiko Carstens | 05dd253 | 2007-07-10 11:24:09 +0200 | [diff] [blame] | 159 | static struct sclp_ipl_info sclp_ipl_info; |
| 160 | |
Michael Holzheu | 46b05d2 | 2007-02-21 10:55:21 +0100 | [diff] [blame] | 161 | int diag308(unsigned long subcode, void *addr) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 162 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 163 | register unsigned long _addr asm("0") = (unsigned long) addr; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 164 | register unsigned long _rc asm("1") = 0; |
| 165 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 166 | asm volatile( |
| 167 | " diag %0,%2,0x308\n" |
| 168 | "0:\n" |
| 169 | EX_TABLE(0b,0b) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 170 | : "+d" (_addr), "+d" (_rc) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 171 | : "d" (subcode) : "cc", "memory"); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 172 | return _rc; |
| 173 | } |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 174 | EXPORT_SYMBOL_GPL(diag308); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 175 | |
| 176 | /* SYSFS */ |
| 177 | |
| 178 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 179 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
| 180 | struct kobj_attribute *attr, \ |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 181 | char *page) \ |
| 182 | { \ |
| 183 | return sprintf(page, _format, _value); \ |
| 184 | } \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 185 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 186 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL); |
| 187 | |
| 188 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 189 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
| 190 | struct kobj_attribute *attr, \ |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 191 | char *page) \ |
| 192 | { \ |
| 193 | return sprintf(page, _fmt_out, \ |
| 194 | (unsigned long long) _value); \ |
| 195 | } \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 196 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
| 197 | struct kobj_attribute *attr, \ |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 198 | const char *buf, size_t len) \ |
| 199 | { \ |
| 200 | unsigned long long value; \ |
| 201 | if (sscanf(buf, _fmt_in, &value) != 1) \ |
| 202 | return -EINVAL; \ |
| 203 | _value = value; \ |
| 204 | return len; \ |
| 205 | } \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 206 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 207 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
| 208 | sys_##_prefix##_##_name##_show, \ |
| 209 | sys_##_prefix##_##_name##_store); |
| 210 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 211 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 212 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
| 213 | struct kobj_attribute *attr, \ |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 214 | char *page) \ |
| 215 | { \ |
| 216 | return sprintf(page, _fmt_out, _value); \ |
| 217 | } \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 218 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
| 219 | struct kobj_attribute *attr, \ |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 220 | const char *buf, size_t len) \ |
| 221 | { \ |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 222 | strncpy(_value, buf, sizeof(_value) - 1); \ |
| 223 | strstrip(_value); \ |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 224 | return len; \ |
| 225 | } \ |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 226 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 227 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
| 228 | sys_##_prefix##_##_name##_show, \ |
| 229 | sys_##_prefix##_##_name##_store); |
| 230 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 231 | static void make_attrs_ro(struct attribute **attrs) |
| 232 | { |
| 233 | while (*attrs) { |
| 234 | (*attrs)->mode = S_IRUGO; |
| 235 | attrs++; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * ipl section |
| 241 | */ |
| 242 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 243 | static __init enum ipl_type get_ipl_type(void) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 244 | { |
| 245 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; |
| 246 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 247 | if (ipl_flags & IPL_NSS_VALID) |
| 248 | return IPL_TYPE_NSS; |
Heiko Carstens | e87bfe5 | 2006-09-20 15:59:15 +0200 | [diff] [blame] | 249 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 250 | return IPL_TYPE_UNKNOWN; |
Heiko Carstens | e87bfe5 | 2006-09-20 15:59:15 +0200 | [diff] [blame] | 251 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 252 | return IPL_TYPE_CCW; |
| 253 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) |
| 254 | return IPL_TYPE_UNKNOWN; |
| 255 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) |
| 256 | return IPL_TYPE_UNKNOWN; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 257 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
| 258 | return IPL_TYPE_FCP_DUMP; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 259 | return IPL_TYPE_FCP; |
| 260 | } |
| 261 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 262 | struct ipl_info ipl_info; |
| 263 | EXPORT_SYMBOL_GPL(ipl_info); |
| 264 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 265 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
| 266 | char *page) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 267 | { |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 268 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 269 | } |
| 270 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 271 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 272 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 273 | /* VM IPL PARM routines */ |
| 274 | static void reipl_get_ascii_vmparm(char *dest, |
| 275 | const struct ipl_parameter_block *ipb) |
| 276 | { |
| 277 | int i; |
| 278 | int len = 0; |
| 279 | char has_lowercase = 0; |
| 280 | |
| 281 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
| 282 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { |
| 283 | |
| 284 | len = ipb->ipl_info.ccw.vm_parm_len; |
| 285 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
| 286 | /* If at least one character is lowercase, we assume mixed |
| 287 | * case; otherwise we convert everything to lowercase. |
| 288 | */ |
| 289 | for (i = 0; i < len; i++) |
| 290 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ |
| 291 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ |
| 292 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ |
| 293 | has_lowercase = 1; |
| 294 | break; |
| 295 | } |
| 296 | if (!has_lowercase) |
| 297 | EBC_TOLOWER(dest, len); |
| 298 | EBCASC(dest, len); |
| 299 | } |
| 300 | dest[len] = 0; |
| 301 | } |
| 302 | |
| 303 | void get_ipl_vmparm(char *dest) |
| 304 | { |
| 305 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
| 306 | reipl_get_ascii_vmparm(dest, &ipl_block); |
| 307 | else |
| 308 | dest[0] = 0; |
| 309 | } |
| 310 | |
| 311 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, |
| 312 | struct kobj_attribute *attr, char *page) |
| 313 | { |
| 314 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; |
| 315 | |
| 316 | get_ipl_vmparm(parm); |
| 317 | return sprintf(page, "%s\n", parm); |
| 318 | } |
| 319 | |
| 320 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
| 321 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); |
| 322 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 323 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
| 324 | struct kobj_attribute *attr, char *page) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 325 | { |
| 326 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; |
| 327 | |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 328 | switch (ipl_info.type) { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 329 | case IPL_TYPE_CCW: |
| 330 | return sprintf(page, "0.0.%04x\n", ipl_devno); |
| 331 | case IPL_TYPE_FCP: |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 332 | case IPL_TYPE_FCP_DUMP: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 333 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
| 334 | default: |
| 335 | return 0; |
| 336 | } |
| 337 | } |
| 338 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 339 | static struct kobj_attribute sys_ipl_device_attr = |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 340 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
| 341 | |
Al Viro | 05bd711 | 2007-07-15 21:01:22 +0100 | [diff] [blame] | 342 | static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr, |
| 343 | char *buf, loff_t off, size_t count) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 344 | { |
Akinobu Mita | 0788fea | 2008-07-14 09:59:17 +0200 | [diff] [blame] | 345 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
| 346 | IPL_PARMBLOCK_SIZE); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | static struct bin_attribute ipl_parameter_attr = { |
| 350 | .attr = { |
| 351 | .name = "binary_parameter", |
| 352 | .mode = S_IRUGO, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 353 | }, |
| 354 | .size = PAGE_SIZE, |
| 355 | .read = &ipl_parameter_read, |
| 356 | }; |
| 357 | |
Al Viro | 05bd711 | 2007-07-15 21:01:22 +0100 | [diff] [blame] | 358 | static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr, |
| 359 | char *buf, loff_t off, size_t count) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 360 | { |
| 361 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; |
| 362 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; |
| 363 | |
Akinobu Mita | 0788fea | 2008-07-14 09:59:17 +0200 | [diff] [blame] | 364 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | static struct bin_attribute ipl_scp_data_attr = { |
| 368 | .attr = { |
| 369 | .name = "scp_data", |
| 370 | .mode = S_IRUGO, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 371 | }, |
| 372 | .size = PAGE_SIZE, |
Al Viro | 05bd711 | 2007-07-15 21:01:22 +0100 | [diff] [blame] | 373 | .read = ipl_scp_data_read, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 374 | }; |
| 375 | |
| 376 | /* FCP ipl device attributes */ |
| 377 | |
| 378 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) |
| 379 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); |
| 380 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) |
| 381 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); |
| 382 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) |
| 383 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); |
| 384 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) |
| 385 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); |
| 386 | |
| 387 | static struct attribute *ipl_fcp_attrs[] = { |
| 388 | &sys_ipl_type_attr.attr, |
| 389 | &sys_ipl_device_attr.attr, |
| 390 | &sys_ipl_fcp_wwpn_attr.attr, |
| 391 | &sys_ipl_fcp_lun_attr.attr, |
| 392 | &sys_ipl_fcp_bootprog_attr.attr, |
| 393 | &sys_ipl_fcp_br_lba_attr.attr, |
| 394 | NULL, |
| 395 | }; |
| 396 | |
| 397 | static struct attribute_group ipl_fcp_attr_group = { |
| 398 | .attrs = ipl_fcp_attrs, |
| 399 | }; |
| 400 | |
| 401 | /* CCW ipl device attributes */ |
| 402 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 403 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
| 404 | struct kobj_attribute *attr, char *page) |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 405 | { |
| 406 | char loadparm[LOADPARM_LEN + 1] = {}; |
| 407 | |
Heiko Carstens | 05dd253 | 2007-07-10 11:24:09 +0200 | [diff] [blame] | 408 | if (!sclp_ipl_info.is_valid) |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 409 | return sprintf(page, "#unknown#\n"); |
Heiko Carstens | 05dd253 | 2007-07-10 11:24:09 +0200 | [diff] [blame] | 410 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 411 | EBCASC(loadparm, LOADPARM_LEN); |
| 412 | strstrip(loadparm); |
| 413 | return sprintf(page, "%s\n", loadparm); |
| 414 | } |
| 415 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 416 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 417 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
| 418 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 419 | static struct attribute *ipl_ccw_attrs_vm[] = { |
| 420 | &sys_ipl_type_attr.attr, |
| 421 | &sys_ipl_device_attr.attr, |
| 422 | &sys_ipl_ccw_loadparm_attr.attr, |
| 423 | &sys_ipl_vm_parm_attr.attr, |
| 424 | NULL, |
| 425 | }; |
| 426 | |
| 427 | static struct attribute *ipl_ccw_attrs_lpar[] = { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 428 | &sys_ipl_type_attr.attr, |
| 429 | &sys_ipl_device_attr.attr, |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 430 | &sys_ipl_ccw_loadparm_attr.attr, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 431 | NULL, |
| 432 | }; |
| 433 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 434 | static struct attribute_group ipl_ccw_attr_group_vm = { |
| 435 | .attrs = ipl_ccw_attrs_vm, |
| 436 | }; |
| 437 | |
| 438 | static struct attribute_group ipl_ccw_attr_group_lpar = { |
| 439 | .attrs = ipl_ccw_attrs_lpar |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 440 | }; |
| 441 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 442 | /* NSS ipl device attributes */ |
| 443 | |
| 444 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); |
| 445 | |
| 446 | static struct attribute *ipl_nss_attrs[] = { |
| 447 | &sys_ipl_type_attr.attr, |
| 448 | &sys_ipl_nss_name_attr.attr, |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 449 | &sys_ipl_ccw_loadparm_attr.attr, |
| 450 | &sys_ipl_vm_parm_attr.attr, |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 451 | NULL, |
| 452 | }; |
| 453 | |
| 454 | static struct attribute_group ipl_nss_attr_group = { |
| 455 | .attrs = ipl_nss_attrs, |
| 456 | }; |
| 457 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 458 | /* UNKNOWN ipl device attributes */ |
| 459 | |
| 460 | static struct attribute *ipl_unknown_attrs[] = { |
| 461 | &sys_ipl_type_attr.attr, |
| 462 | NULL, |
| 463 | }; |
| 464 | |
| 465 | static struct attribute_group ipl_unknown_attr_group = { |
| 466 | .attrs = ipl_unknown_attrs, |
| 467 | }; |
| 468 | |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 469 | static struct kset *ipl_kset; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 470 | |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 471 | static int __init ipl_register_fcp_files(void) |
| 472 | { |
| 473 | int rc; |
| 474 | |
| 475 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); |
| 476 | if (rc) |
| 477 | goto out; |
| 478 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); |
| 479 | if (rc) |
| 480 | goto out_ipl_parm; |
| 481 | rc = sysfs_create_bin_file(&ipl_kset->kobj, &ipl_scp_data_attr); |
| 482 | if (!rc) |
| 483 | goto out; |
| 484 | |
| 485 | sysfs_remove_bin_file(&ipl_kset->kobj, &ipl_parameter_attr); |
| 486 | |
| 487 | out_ipl_parm: |
| 488 | sysfs_remove_group(&ipl_kset->kobj, &ipl_fcp_attr_group); |
| 489 | out: |
| 490 | return rc; |
| 491 | } |
| 492 | |
| 493 | static void ipl_run(struct shutdown_trigger *trigger) |
| 494 | { |
| 495 | diag308(DIAG308_IPL, NULL); |
| 496 | if (MACHINE_IS_VM) |
| 497 | __cpcmd("IPL", NULL, 0, NULL); |
| 498 | else if (ipl_info.type == IPL_TYPE_CCW) |
| 499 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); |
| 500 | } |
| 501 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 502 | static int __init ipl_init(void) |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 503 | { |
| 504 | int rc; |
| 505 | |
| 506 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); |
| 507 | if (!ipl_kset) { |
| 508 | rc = -ENOMEM; |
| 509 | goto out; |
| 510 | } |
| 511 | switch (ipl_info.type) { |
| 512 | case IPL_TYPE_CCW: |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 513 | if (MACHINE_IS_VM) |
| 514 | rc = sysfs_create_group(&ipl_kset->kobj, |
| 515 | &ipl_ccw_attr_group_vm); |
| 516 | else |
| 517 | rc = sysfs_create_group(&ipl_kset->kobj, |
| 518 | &ipl_ccw_attr_group_lpar); |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 519 | break; |
| 520 | case IPL_TYPE_FCP: |
| 521 | case IPL_TYPE_FCP_DUMP: |
| 522 | rc = ipl_register_fcp_files(); |
| 523 | break; |
| 524 | case IPL_TYPE_NSS: |
| 525 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); |
| 526 | break; |
| 527 | default: |
| 528 | rc = sysfs_create_group(&ipl_kset->kobj, |
| 529 | &ipl_unknown_attr_group); |
| 530 | break; |
| 531 | } |
| 532 | out: |
| 533 | if (rc) |
| 534 | panic("ipl_init failed: rc = %i\n", rc); |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 539 | static struct shutdown_action __refdata ipl_action = { |
| 540 | .name = SHUTDOWN_ACTION_IPL_STR, |
| 541 | .fn = ipl_run, |
| 542 | .init = ipl_init, |
| 543 | }; |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 544 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 545 | /* |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 546 | * reipl shutdown action: Reboot Linux on shutdown. |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 547 | */ |
| 548 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 549 | /* VM IPL PARM attributes */ |
| 550 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, |
| 551 | char *page) |
| 552 | { |
| 553 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; |
| 554 | |
| 555 | reipl_get_ascii_vmparm(vmparm, ipb); |
| 556 | return sprintf(page, "%s\n", vmparm); |
| 557 | } |
| 558 | |
| 559 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, |
| 560 | size_t vmparm_max, |
| 561 | const char *buf, size_t len) |
| 562 | { |
| 563 | int i, ip_len; |
| 564 | |
| 565 | /* ignore trailing newline */ |
| 566 | ip_len = len; |
| 567 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 568 | ip_len--; |
| 569 | |
| 570 | if (ip_len > vmparm_max) |
| 571 | return -EINVAL; |
| 572 | |
| 573 | /* parm is used to store kernel options, check for common chars */ |
| 574 | for (i = 0; i < ip_len; i++) |
| 575 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) |
| 576 | return -EINVAL; |
| 577 | |
| 578 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); |
| 579 | ipb->ipl_info.ccw.vm_parm_len = ip_len; |
| 580 | if (ip_len > 0) { |
| 581 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; |
| 582 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); |
| 583 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); |
| 584 | } else { |
| 585 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; |
| 586 | } |
| 587 | |
| 588 | return len; |
| 589 | } |
| 590 | |
| 591 | /* NSS wrapper */ |
| 592 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, |
| 593 | struct kobj_attribute *attr, char *page) |
| 594 | { |
| 595 | return reipl_generic_vmparm_show(reipl_block_nss, page); |
| 596 | } |
| 597 | |
| 598 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, |
| 599 | struct kobj_attribute *attr, |
| 600 | const char *buf, size_t len) |
| 601 | { |
| 602 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); |
| 603 | } |
| 604 | |
| 605 | /* CCW wrapper */ |
| 606 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, |
| 607 | struct kobj_attribute *attr, char *page) |
| 608 | { |
| 609 | return reipl_generic_vmparm_show(reipl_block_ccw, page); |
| 610 | } |
| 611 | |
| 612 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, |
| 613 | struct kobj_attribute *attr, |
| 614 | const char *buf, size_t len) |
| 615 | { |
| 616 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); |
| 617 | } |
| 618 | |
| 619 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = |
| 620 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, |
| 621 | reipl_nss_vmparm_store); |
| 622 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = |
| 623 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, |
| 624 | reipl_ccw_vmparm_store); |
| 625 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 626 | /* FCP reipl device attributes */ |
| 627 | |
| 628 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
| 629 | reipl_block_fcp->ipl_info.fcp.wwpn); |
| 630 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n", |
| 631 | reipl_block_fcp->ipl_info.fcp.lun); |
| 632 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", |
| 633 | reipl_block_fcp->ipl_info.fcp.bootprog); |
| 634 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", |
| 635 | reipl_block_fcp->ipl_info.fcp.br_lba); |
| 636 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 637 | reipl_block_fcp->ipl_info.fcp.devno); |
| 638 | |
| 639 | static struct attribute *reipl_fcp_attrs[] = { |
| 640 | &sys_reipl_fcp_device_attr.attr, |
| 641 | &sys_reipl_fcp_wwpn_attr.attr, |
| 642 | &sys_reipl_fcp_lun_attr.attr, |
| 643 | &sys_reipl_fcp_bootprog_attr.attr, |
| 644 | &sys_reipl_fcp_br_lba_attr.attr, |
| 645 | NULL, |
| 646 | }; |
| 647 | |
| 648 | static struct attribute_group reipl_fcp_attr_group = { |
| 649 | .name = IPL_FCP_STR, |
| 650 | .attrs = reipl_fcp_attrs, |
| 651 | }; |
| 652 | |
| 653 | /* CCW reipl device attributes */ |
| 654 | |
| 655 | DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 656 | reipl_block_ccw->ipl_info.ccw.devno); |
| 657 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 658 | static void reipl_get_ascii_loadparm(char *loadparm, |
| 659 | struct ipl_parameter_block *ibp) |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 660 | { |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 661 | memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN); |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 662 | EBCASC(loadparm, LOADPARM_LEN); |
| 663 | loadparm[LOADPARM_LEN] = 0; |
| 664 | strstrip(loadparm); |
| 665 | } |
| 666 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 667 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
| 668 | char *page) |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 669 | { |
| 670 | char buf[LOADPARM_LEN + 1]; |
| 671 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 672 | reipl_get_ascii_loadparm(buf, ipb); |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 673 | return sprintf(page, "%s\n", buf); |
| 674 | } |
| 675 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 676 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
| 677 | const char *buf, size_t len) |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 678 | { |
| 679 | int i, lp_len; |
| 680 | |
| 681 | /* ignore trailing newline */ |
| 682 | lp_len = len; |
| 683 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 684 | lp_len--; |
| 685 | /* loadparm can have max 8 characters and must not start with a blank */ |
| 686 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) |
| 687 | return -EINVAL; |
| 688 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ |
| 689 | for (i = 0; i < lp_len; i++) { |
| 690 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || |
| 691 | (buf[i] == '.')) |
| 692 | continue; |
| 693 | return -EINVAL; |
| 694 | } |
| 695 | /* initialize loadparm with blanks */ |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 696 | memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN); |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 697 | /* copy and convert to ebcdic */ |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 698 | memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len); |
| 699 | ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN); |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 700 | return len; |
| 701 | } |
| 702 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 703 | /* NSS wrapper */ |
| 704 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, |
| 705 | struct kobj_attribute *attr, char *page) |
| 706 | { |
| 707 | return reipl_generic_loadparm_show(reipl_block_nss, page); |
| 708 | } |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 709 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 710 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, |
| 711 | struct kobj_attribute *attr, |
| 712 | const char *buf, size_t len) |
| 713 | { |
| 714 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); |
| 715 | } |
| 716 | |
| 717 | /* CCW wrapper */ |
| 718 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, |
| 719 | struct kobj_attribute *attr, char *page) |
| 720 | { |
| 721 | return reipl_generic_loadparm_show(reipl_block_ccw, page); |
| 722 | } |
| 723 | |
| 724 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, |
| 725 | struct kobj_attribute *attr, |
| 726 | const char *buf, size_t len) |
| 727 | { |
| 728 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); |
| 729 | } |
| 730 | |
| 731 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
| 732 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
| 733 | reipl_ccw_loadparm_store); |
| 734 | |
| 735 | static struct attribute *reipl_ccw_attrs_vm[] = { |
| 736 | &sys_reipl_ccw_device_attr.attr, |
| 737 | &sys_reipl_ccw_loadparm_attr.attr, |
| 738 | &sys_reipl_ccw_vmparm_attr.attr, |
| 739 | NULL, |
| 740 | }; |
| 741 | |
| 742 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 743 | &sys_reipl_ccw_device_attr.attr, |
Michael Holzheu | 03a4d20 | 2006-12-04 15:39:58 +0100 | [diff] [blame] | 744 | &sys_reipl_ccw_loadparm_attr.attr, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 745 | NULL, |
| 746 | }; |
| 747 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 748 | static struct attribute_group reipl_ccw_attr_group_vm = { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 749 | .name = IPL_CCW_STR, |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 750 | .attrs = reipl_ccw_attrs_vm, |
| 751 | }; |
| 752 | |
| 753 | static struct attribute_group reipl_ccw_attr_group_lpar = { |
| 754 | .name = IPL_CCW_STR, |
| 755 | .attrs = reipl_ccw_attrs_lpar, |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 756 | }; |
| 757 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 758 | |
| 759 | /* NSS reipl device attributes */ |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 760 | static void reipl_get_ascii_nss_name(char *dst, |
| 761 | struct ipl_parameter_block *ipb) |
| 762 | { |
| 763 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); |
| 764 | EBCASC(dst, NSS_NAME_SIZE); |
| 765 | dst[NSS_NAME_SIZE] = 0; |
| 766 | } |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 767 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 768 | static ssize_t reipl_nss_name_show(struct kobject *kobj, |
| 769 | struct kobj_attribute *attr, char *page) |
| 770 | { |
| 771 | char nss_name[NSS_NAME_SIZE + 1] = {}; |
| 772 | |
| 773 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); |
| 774 | return sprintf(page, "%s\n", nss_name); |
| 775 | } |
| 776 | |
| 777 | static ssize_t reipl_nss_name_store(struct kobject *kobj, |
| 778 | struct kobj_attribute *attr, |
| 779 | const char *buf, size_t len) |
| 780 | { |
| 781 | int nss_len; |
| 782 | |
| 783 | /* ignore trailing newline */ |
| 784 | nss_len = len; |
| 785 | if ((len > 0) && (buf[len - 1] == '\n')) |
| 786 | nss_len--; |
| 787 | |
| 788 | if (nss_len > NSS_NAME_SIZE) |
| 789 | return -EINVAL; |
| 790 | |
| 791 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); |
| 792 | if (nss_len > 0) { |
| 793 | reipl_block_nss->ipl_info.ccw.vm_flags |= |
| 794 | DIAG308_VM_FLAGS_NSS_VALID; |
| 795 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); |
| 796 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); |
| 797 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); |
| 798 | } else { |
| 799 | reipl_block_nss->ipl_info.ccw.vm_flags &= |
| 800 | ~DIAG308_VM_FLAGS_NSS_VALID; |
| 801 | } |
| 802 | |
| 803 | return len; |
| 804 | } |
| 805 | |
| 806 | static struct kobj_attribute sys_reipl_nss_name_attr = |
| 807 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, |
| 808 | reipl_nss_name_store); |
| 809 | |
| 810 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = |
| 811 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, |
| 812 | reipl_nss_loadparm_store); |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 813 | |
| 814 | static struct attribute *reipl_nss_attrs[] = { |
| 815 | &sys_reipl_nss_name_attr.attr, |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 816 | &sys_reipl_nss_loadparm_attr.attr, |
| 817 | &sys_reipl_nss_vmparm_attr.attr, |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 818 | NULL, |
| 819 | }; |
| 820 | |
| 821 | static struct attribute_group reipl_nss_attr_group = { |
| 822 | .name = IPL_NSS_STR, |
| 823 | .attrs = reipl_nss_attrs, |
| 824 | }; |
| 825 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 826 | /* reipl type */ |
| 827 | |
| 828 | static int reipl_set_type(enum ipl_type type) |
| 829 | { |
| 830 | if (!(reipl_capabilities & type)) |
| 831 | return -EINVAL; |
| 832 | |
| 833 | switch(type) { |
| 834 | case IPL_TYPE_CCW: |
Michael Holzheu | 48657d2 | 2008-01-26 14:11:17 +0100 | [diff] [blame] | 835 | if (diag308_set_works) |
| 836 | reipl_method = REIPL_METHOD_CCW_DIAG; |
| 837 | else if (MACHINE_IS_VM) |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 838 | reipl_method = REIPL_METHOD_CCW_VM; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 839 | else |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 840 | reipl_method = REIPL_METHOD_CCW_CIO; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 841 | reipl_block_actual = reipl_block_ccw; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 842 | break; |
| 843 | case IPL_TYPE_FCP: |
| 844 | if (diag308_set_works) |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 845 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 846 | else if (MACHINE_IS_VM) |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 847 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 848 | else |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 849 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 850 | reipl_block_actual = reipl_block_fcp; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 851 | break; |
| 852 | case IPL_TYPE_FCP_DUMP: |
| 853 | reipl_method = REIPL_METHOD_FCP_DUMP; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 854 | break; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 855 | case IPL_TYPE_NSS: |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 856 | if (diag308_set_works) |
| 857 | reipl_method = REIPL_METHOD_NSS_DIAG; |
| 858 | else |
| 859 | reipl_method = REIPL_METHOD_NSS; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 860 | reipl_block_actual = reipl_block_nss; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 861 | break; |
| 862 | case IPL_TYPE_UNKNOWN: |
| 863 | reipl_method = REIPL_METHOD_DEFAULT; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 864 | break; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 865 | default: |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 866 | BUG(); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 867 | } |
| 868 | reipl_type = type; |
| 869 | return 0; |
| 870 | } |
| 871 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 872 | static ssize_t reipl_type_show(struct kobject *kobj, |
| 873 | struct kobj_attribute *attr, char *page) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 874 | { |
| 875 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); |
| 876 | } |
| 877 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 878 | static ssize_t reipl_type_store(struct kobject *kobj, |
| 879 | struct kobj_attribute *attr, |
| 880 | const char *buf, size_t len) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 881 | { |
| 882 | int rc = -EINVAL; |
| 883 | |
| 884 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) |
| 885 | rc = reipl_set_type(IPL_TYPE_CCW); |
| 886 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) |
| 887 | rc = reipl_set_type(IPL_TYPE_FCP); |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 888 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
| 889 | rc = reipl_set_type(IPL_TYPE_NSS); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 890 | return (rc != 0) ? rc : len; |
| 891 | } |
| 892 | |
Greg Kroah-Hartman | 9b94916 | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 893 | static struct kobj_attribute reipl_type_attr = |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 894 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 895 | |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 896 | static struct kset *reipl_kset; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 897 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 898 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
| 899 | const enum ipl_method m) |
| 900 | { |
| 901 | char loadparm[LOADPARM_LEN + 1] = {}; |
| 902 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; |
| 903 | char nss_name[NSS_NAME_SIZE + 1] = {}; |
| 904 | size_t pos = 0; |
| 905 | |
| 906 | reipl_get_ascii_loadparm(loadparm, ipb); |
| 907 | reipl_get_ascii_nss_name(nss_name, ipb); |
| 908 | reipl_get_ascii_vmparm(vmparm, ipb); |
| 909 | |
| 910 | switch (m) { |
| 911 | case REIPL_METHOD_CCW_VM: |
| 912 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); |
| 913 | break; |
| 914 | case REIPL_METHOD_NSS: |
| 915 | pos = sprintf(dst, "IPL %s", nss_name); |
| 916 | break; |
| 917 | default: |
| 918 | break; |
| 919 | } |
| 920 | if (strlen(loadparm) > 0) |
| 921 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); |
| 922 | if (strlen(vmparm) > 0) |
| 923 | sprintf(dst + pos, " PARM %s", vmparm); |
| 924 | } |
| 925 | |
Heiko Carstens | a806170 | 2008-04-17 07:46:26 +0200 | [diff] [blame] | 926 | static void reipl_run(struct shutdown_trigger *trigger) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 927 | { |
| 928 | struct ccw_dev_id devid; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 929 | static char buf[128]; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 930 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 931 | switch (reipl_method) { |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 932 | case REIPL_METHOD_CCW_CIO: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 933 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
| 934 | devid.ssid = 0; |
| 935 | reipl_ccw_dev(&devid); |
| 936 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 937 | case REIPL_METHOD_CCW_VM: |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 938 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
Heiko Carstens | 740b570 | 2006-12-04 15:40:30 +0100 | [diff] [blame] | 939 | __cpcmd(buf, NULL, 0, NULL); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 940 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 941 | case REIPL_METHOD_CCW_DIAG: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 942 | diag308(DIAG308_SET, reipl_block_ccw); |
| 943 | diag308(DIAG308_IPL, NULL); |
| 944 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 945 | case REIPL_METHOD_FCP_RW_DIAG: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 946 | diag308(DIAG308_SET, reipl_block_fcp); |
| 947 | diag308(DIAG308_IPL, NULL); |
| 948 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 949 | case REIPL_METHOD_FCP_RO_DIAG: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 950 | diag308(DIAG308_IPL, NULL); |
| 951 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 952 | case REIPL_METHOD_FCP_RO_VM: |
Heiko Carstens | 740b570 | 2006-12-04 15:40:30 +0100 | [diff] [blame] | 953 | __cpcmd("IPL", NULL, 0, NULL); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 954 | break; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 955 | case REIPL_METHOD_NSS_DIAG: |
| 956 | diag308(DIAG308_SET, reipl_block_nss); |
| 957 | diag308(DIAG308_IPL, NULL); |
| 958 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 959 | case REIPL_METHOD_NSS: |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 960 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 961 | __cpcmd(buf, NULL, 0, NULL); |
| 962 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 963 | case REIPL_METHOD_DEFAULT: |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 964 | if (MACHINE_IS_VM) |
Heiko Carstens | 740b570 | 2006-12-04 15:40:30 +0100 | [diff] [blame] | 965 | __cpcmd("IPL", NULL, 0, NULL); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 966 | diag308(DIAG308_IPL, NULL); |
| 967 | break; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 968 | case REIPL_METHOD_FCP_DUMP: |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 969 | break; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 970 | } |
Michael Holzheu | 208e559 | 2008-03-05 12:37:15 +0100 | [diff] [blame] | 971 | disabled_wait((unsigned long) __builtin_return_address(0)); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 972 | } |
| 973 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 974 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 975 | { |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 976 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
| 977 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; |
| 978 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
| 979 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
| 980 | } |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 981 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 982 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
| 983 | { |
| 984 | /* LOADPARM */ |
| 985 | /* check if read scp info worked and set loadparm */ |
| 986 | if (sclp_ipl_info.is_valid) |
| 987 | memcpy(ipb->ipl_info.ccw.load_parm, |
| 988 | &sclp_ipl_info.loadparm, LOADPARM_LEN); |
| 989 | else |
| 990 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ |
| 991 | memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN); |
| 992 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; |
| 993 | |
| 994 | /* VM PARM */ |
| 995 | if (MACHINE_IS_VM && diag308_set_works && |
| 996 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { |
| 997 | |
| 998 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; |
| 999 | ipb->ipl_info.ccw.vm_parm_len = |
| 1000 | ipl_block.ipl_info.ccw.vm_parm_len; |
| 1001 | memcpy(ipb->ipl_info.ccw.vm_parm, |
| 1002 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); |
| 1003 | } |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1004 | } |
| 1005 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 1006 | static int __init reipl_nss_init(void) |
| 1007 | { |
| 1008 | int rc; |
| 1009 | |
| 1010 | if (!MACHINE_IS_VM) |
| 1011 | return 0; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1012 | |
| 1013 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); |
| 1014 | if (!reipl_block_nss) |
| 1015 | return -ENOMEM; |
| 1016 | |
| 1017 | if (!diag308_set_works) |
| 1018 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; |
| 1019 | |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1020 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 1021 | if (rc) |
| 1022 | return rc; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1023 | |
| 1024 | reipl_block_ccw_init(reipl_block_nss); |
| 1025 | if (ipl_info.type == IPL_TYPE_NSS) { |
| 1026 | memset(reipl_block_nss->ipl_info.ccw.nss_name, |
| 1027 | ' ', NSS_NAME_SIZE); |
| 1028 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, |
| 1029 | kernel_nss_name, strlen(kernel_nss_name)); |
| 1030 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); |
| 1031 | reipl_block_nss->ipl_info.ccw.vm_flags |= |
| 1032 | DIAG308_VM_FLAGS_NSS_VALID; |
| 1033 | |
| 1034 | reipl_block_ccw_fill_parms(reipl_block_nss); |
| 1035 | } |
| 1036 | |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 1037 | reipl_capabilities |= IPL_TYPE_NSS; |
| 1038 | return 0; |
| 1039 | } |
| 1040 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1041 | static int __init reipl_ccw_init(void) |
| 1042 | { |
| 1043 | int rc; |
| 1044 | |
| 1045 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
| 1046 | if (!reipl_block_ccw) |
| 1047 | return -ENOMEM; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1048 | |
| 1049 | if (MACHINE_IS_VM) { |
| 1050 | if (!diag308_set_works) |
| 1051 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; |
| 1052 | rc = sysfs_create_group(&reipl_kset->kobj, |
| 1053 | &reipl_ccw_attr_group_vm); |
| 1054 | } else { |
| 1055 | if(!diag308_set_works) |
| 1056 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; |
| 1057 | rc = sysfs_create_group(&reipl_kset->kobj, |
| 1058 | &reipl_ccw_attr_group_lpar); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1059 | } |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1060 | if (rc) |
| 1061 | return rc; |
| 1062 | |
| 1063 | reipl_block_ccw_init(reipl_block_ccw); |
| 1064 | if (ipl_info.type == IPL_TYPE_CCW) { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1065 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1066 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
| 1067 | } |
| 1068 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1069 | reipl_capabilities |= IPL_TYPE_CCW; |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | static int __init reipl_fcp_init(void) |
| 1074 | { |
| 1075 | int rc; |
| 1076 | |
Michael Holzheu | 008d2d1 | 2009-03-26 15:24:51 +0100 | [diff] [blame] | 1077 | if (!diag308_set_works) { |
| 1078 | if (ipl_info.type == IPL_TYPE_FCP) |
| 1079 | make_attrs_ro(reipl_fcp_attrs); |
| 1080 | else |
| 1081 | return 0; |
| 1082 | } |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1083 | |
| 1084 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
| 1085 | if (!reipl_block_fcp) |
| 1086 | return -ENOMEM; |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1087 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_fcp_attr_group); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1088 | if (rc) { |
| 1089 | free_page((unsigned long)reipl_block_fcp); |
| 1090 | return rc; |
| 1091 | } |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 1092 | if (ipl_info.type == IPL_TYPE_FCP) { |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1093 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
| 1094 | } else { |
| 1095 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
| 1096 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
Michael Holzheu | fbb04f3 | 2007-03-19 13:19:03 +0100 | [diff] [blame] | 1097 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1098 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
| 1099 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; |
| 1100 | } |
| 1101 | reipl_capabilities |= IPL_TYPE_FCP; |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 1105 | static int __init reipl_init(void) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1106 | { |
| 1107 | int rc; |
| 1108 | |
Greg Kroah-Hartman | f62ed9e | 2007-11-05 13:16:15 -0800 | [diff] [blame] | 1109 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1110 | if (!reipl_kset) |
| 1111 | return -ENOMEM; |
| 1112 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1113 | if (rc) { |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1114 | kset_unregister(reipl_kset); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1115 | return rc; |
| 1116 | } |
| 1117 | rc = reipl_ccw_init(); |
| 1118 | if (rc) |
| 1119 | return rc; |
| 1120 | rc = reipl_fcp_init(); |
| 1121 | if (rc) |
| 1122 | return rc; |
Hongjie Yang | fe355b7 | 2007-02-05 21:18:24 +0100 | [diff] [blame] | 1123 | rc = reipl_nss_init(); |
| 1124 | if (rc) |
| 1125 | return rc; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 1126 | rc = reipl_set_type(ipl_info.type); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1127 | if (rc) |
| 1128 | return rc; |
| 1129 | return 0; |
| 1130 | } |
| 1131 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 1132 | static struct shutdown_action __refdata reipl_action = { |
| 1133 | .name = SHUTDOWN_ACTION_REIPL_STR, |
| 1134 | .fn = reipl_run, |
| 1135 | .init = reipl_init, |
| 1136 | }; |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1137 | |
| 1138 | /* |
| 1139 | * dump shutdown action: Dump Linux on shutdown. |
| 1140 | */ |
| 1141 | |
| 1142 | /* FCP dump device attributes */ |
| 1143 | |
| 1144 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n", |
| 1145 | dump_block_fcp->ipl_info.fcp.wwpn); |
| 1146 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n", |
| 1147 | dump_block_fcp->ipl_info.fcp.lun); |
| 1148 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", |
| 1149 | dump_block_fcp->ipl_info.fcp.bootprog); |
| 1150 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", |
| 1151 | dump_block_fcp->ipl_info.fcp.br_lba); |
| 1152 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 1153 | dump_block_fcp->ipl_info.fcp.devno); |
| 1154 | |
| 1155 | static struct attribute *dump_fcp_attrs[] = { |
| 1156 | &sys_dump_fcp_device_attr.attr, |
| 1157 | &sys_dump_fcp_wwpn_attr.attr, |
| 1158 | &sys_dump_fcp_lun_attr.attr, |
| 1159 | &sys_dump_fcp_bootprog_attr.attr, |
| 1160 | &sys_dump_fcp_br_lba_attr.attr, |
| 1161 | NULL, |
| 1162 | }; |
| 1163 | |
| 1164 | static struct attribute_group dump_fcp_attr_group = { |
| 1165 | .name = IPL_FCP_STR, |
| 1166 | .attrs = dump_fcp_attrs, |
| 1167 | }; |
| 1168 | |
| 1169 | /* CCW dump device attributes */ |
| 1170 | |
| 1171 | DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n", |
| 1172 | dump_block_ccw->ipl_info.ccw.devno); |
| 1173 | |
| 1174 | static struct attribute *dump_ccw_attrs[] = { |
| 1175 | &sys_dump_ccw_device_attr.attr, |
| 1176 | NULL, |
| 1177 | }; |
| 1178 | |
| 1179 | static struct attribute_group dump_ccw_attr_group = { |
| 1180 | .name = IPL_CCW_STR, |
| 1181 | .attrs = dump_ccw_attrs, |
| 1182 | }; |
| 1183 | |
| 1184 | /* dump type */ |
| 1185 | |
| 1186 | static int dump_set_type(enum dump_type type) |
| 1187 | { |
| 1188 | if (!(dump_capabilities & type)) |
| 1189 | return -EINVAL; |
| 1190 | switch (type) { |
| 1191 | case DUMP_TYPE_CCW: |
Michael Holzheu | 48657d2 | 2008-01-26 14:11:17 +0100 | [diff] [blame] | 1192 | if (diag308_set_works) |
| 1193 | dump_method = DUMP_METHOD_CCW_DIAG; |
| 1194 | else if (MACHINE_IS_VM) |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1195 | dump_method = DUMP_METHOD_CCW_VM; |
| 1196 | else |
| 1197 | dump_method = DUMP_METHOD_CCW_CIO; |
| 1198 | break; |
| 1199 | case DUMP_TYPE_FCP: |
| 1200 | dump_method = DUMP_METHOD_FCP_DIAG; |
| 1201 | break; |
| 1202 | default: |
| 1203 | dump_method = DUMP_METHOD_NONE; |
| 1204 | } |
| 1205 | dump_type = type; |
| 1206 | return 0; |
| 1207 | } |
| 1208 | |
| 1209 | static ssize_t dump_type_show(struct kobject *kobj, |
| 1210 | struct kobj_attribute *attr, char *page) |
| 1211 | { |
| 1212 | return sprintf(page, "%s\n", dump_type_str(dump_type)); |
| 1213 | } |
| 1214 | |
| 1215 | static ssize_t dump_type_store(struct kobject *kobj, |
| 1216 | struct kobj_attribute *attr, |
| 1217 | const char *buf, size_t len) |
| 1218 | { |
| 1219 | int rc = -EINVAL; |
| 1220 | |
| 1221 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) |
| 1222 | rc = dump_set_type(DUMP_TYPE_NONE); |
| 1223 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) |
| 1224 | rc = dump_set_type(DUMP_TYPE_CCW); |
| 1225 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) |
| 1226 | rc = dump_set_type(DUMP_TYPE_FCP); |
| 1227 | return (rc != 0) ? rc : len; |
| 1228 | } |
| 1229 | |
| 1230 | static struct kobj_attribute dump_type_attr = |
| 1231 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); |
| 1232 | |
| 1233 | static struct kset *dump_kset; |
| 1234 | |
| 1235 | static void dump_run(struct shutdown_trigger *trigger) |
| 1236 | { |
| 1237 | struct ccw_dev_id devid; |
| 1238 | static char buf[100]; |
| 1239 | |
| 1240 | switch (dump_method) { |
| 1241 | case DUMP_METHOD_CCW_CIO: |
| 1242 | smp_send_stop(); |
| 1243 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
| 1244 | devid.ssid = 0; |
| 1245 | reipl_ccw_dev(&devid); |
| 1246 | break; |
| 1247 | case DUMP_METHOD_CCW_VM: |
| 1248 | smp_send_stop(); |
| 1249 | sprintf(buf, "STORE STATUS"); |
| 1250 | __cpcmd(buf, NULL, 0, NULL); |
| 1251 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); |
| 1252 | __cpcmd(buf, NULL, 0, NULL); |
| 1253 | break; |
| 1254 | case DUMP_METHOD_CCW_DIAG: |
| 1255 | diag308(DIAG308_SET, dump_block_ccw); |
| 1256 | diag308(DIAG308_DUMP, NULL); |
| 1257 | break; |
| 1258 | case DUMP_METHOD_FCP_DIAG: |
| 1259 | diag308(DIAG308_SET, dump_block_fcp); |
| 1260 | diag308(DIAG308_DUMP, NULL); |
| 1261 | break; |
| 1262 | case DUMP_METHOD_NONE: |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1263 | return; |
| 1264 | } |
| 1265 | printk(KERN_EMERG "Dump failed!\n"); |
| 1266 | } |
| 1267 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1268 | static int __init dump_ccw_init(void) |
| 1269 | { |
| 1270 | int rc; |
| 1271 | |
| 1272 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
| 1273 | if (!dump_block_ccw) |
| 1274 | return -ENOMEM; |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1275 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1276 | if (rc) { |
| 1277 | free_page((unsigned long)dump_block_ccw); |
| 1278 | return rc; |
| 1279 | } |
| 1280 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; |
| 1281 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; |
Michael Holzheu | fbb04f3 | 2007-03-19 13:19:03 +0100 | [diff] [blame] | 1282 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1283 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 1284 | dump_capabilities |= DUMP_TYPE_CCW; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1285 | return 0; |
| 1286 | } |
| 1287 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1288 | static int __init dump_fcp_init(void) |
| 1289 | { |
| 1290 | int rc; |
| 1291 | |
Heiko Carstens | 05dd253 | 2007-07-10 11:24:09 +0200 | [diff] [blame] | 1292 | if (!sclp_ipl_info.has_dump) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1293 | return 0; /* LDIPL DUMP is not installed */ |
| 1294 | if (!diag308_set_works) |
| 1295 | return 0; |
| 1296 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
| 1297 | if (!dump_block_fcp) |
| 1298 | return -ENOMEM; |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1299 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1300 | if (rc) { |
| 1301 | free_page((unsigned long)dump_block_fcp); |
| 1302 | return rc; |
| 1303 | } |
| 1304 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
| 1305 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
Michael Holzheu | fbb04f3 | 2007-03-19 13:19:03 +0100 | [diff] [blame] | 1306 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1307 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
| 1308 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 1309 | dump_capabilities |= DUMP_TYPE_FCP; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1310 | return 0; |
| 1311 | } |
| 1312 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 1313 | static int __init dump_init(void) |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1314 | { |
| 1315 | int rc; |
| 1316 | |
Greg Kroah-Hartman | f62ed9e | 2007-11-05 13:16:15 -0800 | [diff] [blame] | 1317 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1318 | if (!dump_kset) |
| 1319 | return -ENOMEM; |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1320 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1321 | if (rc) { |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1322 | kset_unregister(dump_kset); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1323 | return rc; |
| 1324 | } |
| 1325 | rc = dump_ccw_init(); |
| 1326 | if (rc) |
| 1327 | return rc; |
| 1328 | rc = dump_fcp_init(); |
| 1329 | if (rc) |
| 1330 | return rc; |
Michael Holzheu | 411ed32 | 2007-04-27 16:01:49 +0200 | [diff] [blame] | 1331 | dump_set_type(DUMP_TYPE_NONE); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1332 | return 0; |
| 1333 | } |
| 1334 | |
Heiko Carstens | 2bc89b5 | 2008-02-05 16:50:40 +0100 | [diff] [blame] | 1335 | static struct shutdown_action __refdata dump_action = { |
| 1336 | .name = SHUTDOWN_ACTION_DUMP_STR, |
| 1337 | .fn = dump_run, |
| 1338 | .init = dump_init, |
| 1339 | }; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1340 | |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 1341 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
| 1342 | { |
| 1343 | preempt_disable(); |
| 1344 | /* |
| 1345 | * Bypass dynamic address translation (DAT) when storing IPL parameter |
| 1346 | * information block address and checksum into the prefix area |
| 1347 | * (corresponding to absolute addresses 0-8191). |
| 1348 | * When enhanced DAT applies and the STE format control in one, |
| 1349 | * the absolute address is formed without prefixing. In this case a |
| 1350 | * normal store (stg/st) into the prefix area would no more match to |
| 1351 | * absolute addresses 0-8191. |
| 1352 | */ |
| 1353 | #ifdef CONFIG_64BIT |
| 1354 | asm volatile("sturg %0,%1" |
| 1355 | :: "a" ((unsigned long) reipl_block_actual), |
| 1356 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); |
| 1357 | #else |
| 1358 | asm volatile("stura %0,%1" |
| 1359 | :: "a" ((unsigned long) reipl_block_actual), |
| 1360 | "a" (&lowcore_ptr[smp_processor_id()]->ipib)); |
| 1361 | #endif |
| 1362 | asm volatile("stura %0,%1" |
Frank Munzert | 159d1ff | 2009-03-26 15:24:45 +0100 | [diff] [blame] | 1363 | :: "a" (csum_partial(reipl_block_actual, |
| 1364 | reipl_block_actual->hdr.len, 0)), |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 1365 | "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum)); |
| 1366 | preempt_enable(); |
| 1367 | dump_run(trigger); |
| 1368 | } |
| 1369 | |
| 1370 | static int __init dump_reipl_init(void) |
| 1371 | { |
| 1372 | if (!diag308_set_works) |
| 1373 | return -EOPNOTSUPP; |
| 1374 | else |
| 1375 | return 0; |
| 1376 | } |
| 1377 | |
| 1378 | static struct shutdown_action __refdata dump_reipl_action = { |
| 1379 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, |
| 1380 | .fn = dump_reipl_run, |
| 1381 | .init = dump_reipl_init, |
| 1382 | }; |
| 1383 | |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1384 | /* |
| 1385 | * vmcmd shutdown action: Trigger vm command on shutdown. |
| 1386 | */ |
| 1387 | |
| 1388 | static char vmcmd_on_reboot[128]; |
| 1389 | static char vmcmd_on_panic[128]; |
| 1390 | static char vmcmd_on_halt[128]; |
| 1391 | static char vmcmd_on_poff[128]; |
| 1392 | |
| 1393 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); |
| 1394 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); |
| 1395 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); |
| 1396 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); |
| 1397 | |
| 1398 | static struct attribute *vmcmd_attrs[] = { |
| 1399 | &sys_vmcmd_on_reboot_attr.attr, |
| 1400 | &sys_vmcmd_on_panic_attr.attr, |
| 1401 | &sys_vmcmd_on_halt_attr.attr, |
| 1402 | &sys_vmcmd_on_poff_attr.attr, |
| 1403 | NULL, |
| 1404 | }; |
| 1405 | |
| 1406 | static struct attribute_group vmcmd_attr_group = { |
| 1407 | .attrs = vmcmd_attrs, |
| 1408 | }; |
| 1409 | |
| 1410 | static struct kset *vmcmd_kset; |
| 1411 | |
| 1412 | static void vmcmd_run(struct shutdown_trigger *trigger) |
| 1413 | { |
| 1414 | char *cmd, *next_cmd; |
| 1415 | |
| 1416 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) |
| 1417 | cmd = vmcmd_on_reboot; |
| 1418 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
| 1419 | cmd = vmcmd_on_panic; |
| 1420 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) |
| 1421 | cmd = vmcmd_on_halt; |
| 1422 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) |
| 1423 | cmd = vmcmd_on_poff; |
| 1424 | else |
| 1425 | return; |
| 1426 | |
| 1427 | if (strlen(cmd) == 0) |
| 1428 | return; |
| 1429 | do { |
| 1430 | next_cmd = strchr(cmd, '\n'); |
| 1431 | if (next_cmd) { |
| 1432 | next_cmd[0] = 0; |
| 1433 | next_cmd += 1; |
| 1434 | } |
| 1435 | __cpcmd(cmd, NULL, 0, NULL); |
| 1436 | cmd = next_cmd; |
| 1437 | } while (cmd != NULL); |
| 1438 | } |
| 1439 | |
| 1440 | static int vmcmd_init(void) |
| 1441 | { |
| 1442 | if (!MACHINE_IS_VM) |
| 1443 | return -ENOTSUPP; |
| 1444 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
| 1445 | if (!vmcmd_kset) |
| 1446 | return -ENOMEM; |
| 1447 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); |
| 1448 | } |
| 1449 | |
| 1450 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, |
| 1451 | vmcmd_run, vmcmd_init}; |
| 1452 | |
| 1453 | /* |
| 1454 | * stop shutdown action: Stop Linux on shutdown. |
| 1455 | */ |
| 1456 | |
| 1457 | static void stop_run(struct shutdown_trigger *trigger) |
| 1458 | { |
Michael Holzheu | c654749 | 2008-01-26 14:11:12 +0100 | [diff] [blame] | 1459 | if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
| 1460 | disabled_wait((unsigned long) __builtin_return_address(0)); |
| 1461 | else { |
| 1462 | signal_processor(smp_processor_id(), sigp_stop); |
| 1463 | for (;;); |
| 1464 | } |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1465 | } |
| 1466 | |
| 1467 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, |
| 1468 | stop_run, NULL}; |
| 1469 | |
| 1470 | /* action list */ |
| 1471 | |
| 1472 | static struct shutdown_action *shutdown_actions_list[] = { |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 1473 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
| 1474 | &vmcmd_action, &stop_action}; |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1475 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
| 1476 | |
| 1477 | /* |
| 1478 | * Trigger section |
| 1479 | */ |
| 1480 | |
| 1481 | static struct kset *shutdown_actions_kset; |
| 1482 | |
| 1483 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, |
| 1484 | size_t len) |
| 1485 | { |
| 1486 | int i; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 1487 | |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1488 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
| 1489 | if (!shutdown_actions_list[i]) |
| 1490 | continue; |
Frank Munzert | 099b765 | 2009-03-26 15:23:43 +0100 | [diff] [blame] | 1491 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1492 | trigger->action = shutdown_actions_list[i]; |
| 1493 | return len; |
| 1494 | } |
| 1495 | } |
| 1496 | return -EINVAL; |
| 1497 | } |
| 1498 | |
| 1499 | /* on reipl */ |
| 1500 | |
| 1501 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, |
| 1502 | &reipl_action}; |
| 1503 | |
| 1504 | static ssize_t on_reboot_show(struct kobject *kobj, |
| 1505 | struct kobj_attribute *attr, char *page) |
| 1506 | { |
| 1507 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); |
| 1508 | } |
| 1509 | |
| 1510 | static ssize_t on_reboot_store(struct kobject *kobj, |
| 1511 | struct kobj_attribute *attr, |
| 1512 | const char *buf, size_t len) |
| 1513 | { |
| 1514 | return set_trigger(buf, &on_reboot_trigger, len); |
| 1515 | } |
| 1516 | |
| 1517 | static struct kobj_attribute on_reboot_attr = |
| 1518 | __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store); |
| 1519 | |
| 1520 | static void do_machine_restart(char *__unused) |
| 1521 | { |
| 1522 | smp_send_stop(); |
| 1523 | on_reboot_trigger.action->fn(&on_reboot_trigger); |
| 1524 | reipl_run(NULL); |
| 1525 | } |
| 1526 | void (*_machine_restart)(char *command) = do_machine_restart; |
| 1527 | |
| 1528 | /* on panic */ |
| 1529 | |
| 1530 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; |
| 1531 | |
| 1532 | static ssize_t on_panic_show(struct kobject *kobj, |
| 1533 | struct kobj_attribute *attr, char *page) |
| 1534 | { |
| 1535 | return sprintf(page, "%s\n", on_panic_trigger.action->name); |
| 1536 | } |
| 1537 | |
| 1538 | static ssize_t on_panic_store(struct kobject *kobj, |
| 1539 | struct kobj_attribute *attr, |
| 1540 | const char *buf, size_t len) |
| 1541 | { |
| 1542 | return set_trigger(buf, &on_panic_trigger, len); |
| 1543 | } |
| 1544 | |
| 1545 | static struct kobj_attribute on_panic_attr = |
| 1546 | __ATTR(on_panic, 0644, on_panic_show, on_panic_store); |
| 1547 | |
| 1548 | static void do_panic(void) |
| 1549 | { |
| 1550 | on_panic_trigger.action->fn(&on_panic_trigger); |
| 1551 | stop_run(&on_panic_trigger); |
| 1552 | } |
| 1553 | |
| 1554 | /* on halt */ |
| 1555 | |
| 1556 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; |
| 1557 | |
| 1558 | static ssize_t on_halt_show(struct kobject *kobj, |
| 1559 | struct kobj_attribute *attr, char *page) |
| 1560 | { |
| 1561 | return sprintf(page, "%s\n", on_halt_trigger.action->name); |
| 1562 | } |
| 1563 | |
| 1564 | static ssize_t on_halt_store(struct kobject *kobj, |
| 1565 | struct kobj_attribute *attr, |
| 1566 | const char *buf, size_t len) |
| 1567 | { |
| 1568 | return set_trigger(buf, &on_halt_trigger, len); |
| 1569 | } |
| 1570 | |
| 1571 | static struct kobj_attribute on_halt_attr = |
| 1572 | __ATTR(on_halt, 0644, on_halt_show, on_halt_store); |
| 1573 | |
| 1574 | |
| 1575 | static void do_machine_halt(void) |
| 1576 | { |
| 1577 | smp_send_stop(); |
| 1578 | on_halt_trigger.action->fn(&on_halt_trigger); |
| 1579 | stop_run(&on_halt_trigger); |
| 1580 | } |
| 1581 | void (*_machine_halt)(void) = do_machine_halt; |
| 1582 | |
| 1583 | /* on power off */ |
| 1584 | |
| 1585 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; |
| 1586 | |
| 1587 | static ssize_t on_poff_show(struct kobject *kobj, |
| 1588 | struct kobj_attribute *attr, char *page) |
| 1589 | { |
| 1590 | return sprintf(page, "%s\n", on_poff_trigger.action->name); |
| 1591 | } |
| 1592 | |
| 1593 | static ssize_t on_poff_store(struct kobject *kobj, |
| 1594 | struct kobj_attribute *attr, |
| 1595 | const char *buf, size_t len) |
| 1596 | { |
| 1597 | return set_trigger(buf, &on_poff_trigger, len); |
| 1598 | } |
| 1599 | |
| 1600 | static struct kobj_attribute on_poff_attr = |
| 1601 | __ATTR(on_poff, 0644, on_poff_show, on_poff_store); |
| 1602 | |
| 1603 | |
| 1604 | static void do_machine_power_off(void) |
| 1605 | { |
| 1606 | smp_send_stop(); |
| 1607 | on_poff_trigger.action->fn(&on_poff_trigger); |
| 1608 | stop_run(&on_poff_trigger); |
| 1609 | } |
| 1610 | void (*_machine_power_off)(void) = do_machine_power_off; |
| 1611 | |
| 1612 | static void __init shutdown_triggers_init(void) |
| 1613 | { |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1614 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
Greg Kroah-Hartman | f62ed9e | 2007-11-05 13:16:15 -0800 | [diff] [blame] | 1615 | firmware_kobj); |
Greg Kroah-Hartman | d91885b | 2007-11-02 17:17:00 -0400 | [diff] [blame] | 1616 | if (!shutdown_actions_kset) |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1617 | goto fail; |
| 1618 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
| 1619 | &on_reboot_attr.attr)) |
| 1620 | goto fail; |
| 1621 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
| 1622 | &on_panic_attr.attr)) |
| 1623 | goto fail; |
| 1624 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
| 1625 | &on_halt_attr.attr)) |
| 1626 | goto fail; |
| 1627 | if (sysfs_create_file(&shutdown_actions_kset->kobj, |
| 1628 | &on_poff_attr.attr)) |
| 1629 | goto fail; |
| 1630 | |
| 1631 | return; |
| 1632 | fail: |
| 1633 | panic("shutdown_triggers_init failed\n"); |
| 1634 | } |
| 1635 | |
| 1636 | static void __init shutdown_actions_init(void) |
| 1637 | { |
| 1638 | int i; |
| 1639 | |
| 1640 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
| 1641 | if (!shutdown_actions_list[i]->init) |
| 1642 | continue; |
| 1643 | if (shutdown_actions_list[i]->init()) |
| 1644 | shutdown_actions_list[i] = NULL; |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1645 | } |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1646 | } |
| 1647 | |
| 1648 | static int __init s390_ipl_init(void) |
| 1649 | { |
Michael Holzheu | d09293a | 2008-01-26 14:11:15 +0100 | [diff] [blame] | 1650 | sclp_get_ipl_info(&sclp_ipl_info); |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1651 | shutdown_actions_init(); |
| 1652 | shutdown_triggers_init(); |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 1653 | return 0; |
| 1654 | } |
| 1655 | |
| 1656 | __initcall(s390_ipl_init); |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1657 | |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1658 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
| 1659 | { |
| 1660 | int sx, dx; |
| 1661 | |
| 1662 | dx = 0; |
| 1663 | for (sx = 0; src[sx] != 0; sx++) { |
| 1664 | if (src[sx] == '"') |
| 1665 | continue; |
| 1666 | dst[dx++] = src[sx]; |
| 1667 | if (dx >= n) |
| 1668 | break; |
| 1669 | } |
| 1670 | } |
| 1671 | |
| 1672 | static int __init vmcmd_on_reboot_setup(char *str) |
| 1673 | { |
| 1674 | if (!MACHINE_IS_VM) |
| 1675 | return 1; |
| 1676 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); |
| 1677 | vmcmd_on_reboot[127] = 0; |
| 1678 | on_reboot_trigger.action = &vmcmd_action; |
| 1679 | return 1; |
| 1680 | } |
| 1681 | __setup("vmreboot=", vmcmd_on_reboot_setup); |
| 1682 | |
| 1683 | static int __init vmcmd_on_panic_setup(char *str) |
| 1684 | { |
| 1685 | if (!MACHINE_IS_VM) |
| 1686 | return 1; |
| 1687 | strncpy_skip_quote(vmcmd_on_panic, str, 127); |
| 1688 | vmcmd_on_panic[127] = 0; |
| 1689 | on_panic_trigger.action = &vmcmd_action; |
| 1690 | return 1; |
| 1691 | } |
| 1692 | __setup("vmpanic=", vmcmd_on_panic_setup); |
| 1693 | |
| 1694 | static int __init vmcmd_on_halt_setup(char *str) |
| 1695 | { |
| 1696 | if (!MACHINE_IS_VM) |
| 1697 | return 1; |
| 1698 | strncpy_skip_quote(vmcmd_on_halt, str, 127); |
| 1699 | vmcmd_on_halt[127] = 0; |
| 1700 | on_halt_trigger.action = &vmcmd_action; |
| 1701 | return 1; |
| 1702 | } |
| 1703 | __setup("vmhalt=", vmcmd_on_halt_setup); |
| 1704 | |
| 1705 | static int __init vmcmd_on_poff_setup(char *str) |
| 1706 | { |
| 1707 | if (!MACHINE_IS_VM) |
| 1708 | return 1; |
| 1709 | strncpy_skip_quote(vmcmd_on_poff, str, 127); |
| 1710 | vmcmd_on_poff[127] = 0; |
| 1711 | on_poff_trigger.action = &vmcmd_action; |
| 1712 | return 1; |
| 1713 | } |
| 1714 | __setup("vmpoff=", vmcmd_on_poff_setup); |
| 1715 | |
| 1716 | static int on_panic_notify(struct notifier_block *self, |
| 1717 | unsigned long event, void *data) |
| 1718 | { |
| 1719 | do_panic(); |
| 1720 | return NOTIFY_OK; |
| 1721 | } |
| 1722 | |
| 1723 | static struct notifier_block on_panic_nb = { |
| 1724 | .notifier_call = on_panic_notify, |
Michael Holzheu | 7e9b580 | 2009-03-26 15:24:55 +0100 | [diff] [blame] | 1725 | .priority = INT_MIN, |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1726 | }; |
| 1727 | |
| 1728 | void __init setup_ipl(void) |
| 1729 | { |
| 1730 | ipl_info.type = get_ipl_type(); |
| 1731 | switch (ipl_info.type) { |
| 1732 | case IPL_TYPE_CCW: |
| 1733 | ipl_info.data.ccw.dev_id.devno = ipl_devno; |
| 1734 | ipl_info.data.ccw.dev_id.ssid = 0; |
| 1735 | break; |
| 1736 | case IPL_TYPE_FCP: |
| 1737 | case IPL_TYPE_FCP_DUMP: |
| 1738 | ipl_info.data.fcp.dev_id.devno = |
| 1739 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; |
| 1740 | ipl_info.data.fcp.dev_id.ssid = 0; |
| 1741 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; |
| 1742 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; |
| 1743 | break; |
| 1744 | case IPL_TYPE_NSS: |
| 1745 | strncpy(ipl_info.data.nss.name, kernel_nss_name, |
| 1746 | sizeof(ipl_info.data.nss.name)); |
| 1747 | break; |
| 1748 | case IPL_TYPE_UNKNOWN: |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1749 | /* We have no info to copy */ |
| 1750 | break; |
| 1751 | } |
| 1752 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); |
| 1753 | } |
| 1754 | |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1755 | void __init ipl_update_parameters(void) |
| 1756 | { |
Michael Holzheu | 3a95e8e | 2008-08-01 16:39:10 +0200 | [diff] [blame] | 1757 | int rc; |
| 1758 | |
| 1759 | rc = diag308(DIAG308_STORE, &ipl_block); |
| 1760 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) |
Hendrik Brueckner | a0443fb | 2008-07-14 09:59:09 +0200 | [diff] [blame] | 1761 | diag308_set_works = 1; |
| 1762 | } |
| 1763 | |
Heiko Carstens | 6fc321f | 2007-04-27 16:01:25 +0200 | [diff] [blame] | 1764 | void __init ipl_save_parameters(void) |
| 1765 | { |
| 1766 | struct cio_iplinfo iplinfo; |
| 1767 | unsigned int *ipl_ptr; |
| 1768 | void *src, *dst; |
| 1769 | |
| 1770 | if (cio_get_iplinfo(&iplinfo)) |
| 1771 | return; |
| 1772 | |
| 1773 | ipl_devno = iplinfo.devno; |
| 1774 | ipl_flags |= IPL_DEVNO_VALID; |
| 1775 | if (!iplinfo.is_qdio) |
| 1776 | return; |
| 1777 | ipl_flags |= IPL_PARMBLOCK_VALID; |
| 1778 | ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR; |
| 1779 | src = (void *)(unsigned long)*ipl_ptr; |
| 1780 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
| 1781 | memmove(dst, src, PAGE_SIZE); |
| 1782 | *ipl_ptr = IPL_PARMBLOCK_ORIGIN; |
| 1783 | } |
| 1784 | |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1785 | static LIST_HEAD(rcall); |
| 1786 | static DEFINE_MUTEX(rcall_mutex); |
| 1787 | |
| 1788 | void register_reset_call(struct reset_call *reset) |
| 1789 | { |
| 1790 | mutex_lock(&rcall_mutex); |
| 1791 | list_add(&reset->list, &rcall); |
| 1792 | mutex_unlock(&rcall_mutex); |
| 1793 | } |
| 1794 | EXPORT_SYMBOL_GPL(register_reset_call); |
| 1795 | |
| 1796 | void unregister_reset_call(struct reset_call *reset) |
| 1797 | { |
| 1798 | mutex_lock(&rcall_mutex); |
| 1799 | list_del(&reset->list); |
| 1800 | mutex_unlock(&rcall_mutex); |
| 1801 | } |
| 1802 | EXPORT_SYMBOL_GPL(unregister_reset_call); |
| 1803 | |
| 1804 | static void do_reset_calls(void) |
| 1805 | { |
| 1806 | struct reset_call *reset; |
| 1807 | |
| 1808 | list_for_each_entry(reset, &rcall, list) |
| 1809 | reset->fn(); |
| 1810 | } |
| 1811 | |
Heiko Carstens | c5dd858 | 2007-03-05 23:35:43 +0100 | [diff] [blame] | 1812 | u32 dump_prefix_page; |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1813 | |
| 1814 | void s390_reset_system(void) |
| 1815 | { |
| 1816 | struct _lowcore *lc; |
| 1817 | |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1818 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
Michael Holzheu | a45e141 | 2006-12-15 17:18:22 +0100 | [diff] [blame] | 1819 | |
| 1820 | /* Stack for interrupt/machine check handler */ |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1821 | lc->panic_stack = S390_lowcore.panic_stack; |
| 1822 | |
Michael Holzheu | da1cf23 | 2006-12-15 17:18:27 +0100 | [diff] [blame] | 1823 | /* Save prefix page address for dump case */ |
Heiko Carstens | c5dd858 | 2007-03-05 23:35:43 +0100 | [diff] [blame] | 1824 | dump_prefix_page = (u32)(unsigned long) lc; |
Michael Holzheu | da1cf23 | 2006-12-15 17:18:27 +0100 | [diff] [blame] | 1825 | |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1826 | /* Disable prefixing */ |
| 1827 | set_prefix(0); |
| 1828 | |
| 1829 | /* Disable lowcore protection */ |
| 1830 | __ctl_clear_bit(0,28); |
| 1831 | |
| 1832 | /* Set new machine check handler */ |
Gerald Schaefer | c1821c2 | 2007-02-05 21:18:17 +0100 | [diff] [blame] | 1833 | S390_lowcore.mcck_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1834 | S390_lowcore.mcck_new_psw.addr = |
Heiko Carstens | ab14de6 | 2007-02-05 21:18:37 +0100 | [diff] [blame] | 1835 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
Michael Holzheu | a45e141 | 2006-12-15 17:18:22 +0100 | [diff] [blame] | 1836 | |
| 1837 | /* Set new program check handler */ |
Gerald Schaefer | c1821c2 | 2007-02-05 21:18:17 +0100 | [diff] [blame] | 1838 | S390_lowcore.program_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; |
Michael Holzheu | a45e141 | 2006-12-15 17:18:22 +0100 | [diff] [blame] | 1839 | S390_lowcore.program_new_psw.addr = |
Heiko Carstens | ab14de6 | 2007-02-05 21:18:37 +0100 | [diff] [blame] | 1840 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
Michael Holzheu | a45e141 | 2006-12-15 17:18:22 +0100 | [diff] [blame] | 1841 | |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 1842 | do_reset_calls(); |
| 1843 | } |
Michael Holzheu | 99ca4e5 | 2008-01-26 14:11:11 +0100 | [diff] [blame] | 1844 | |