2006-09-20 13:58:49 +00:00
|
|
|
/*
|
|
|
|
* arch/s390/kernel/ipl.c
|
|
|
|
* ipl/reipl/dump support for Linux on s390.
|
|
|
|
*
|
|
|
|
* Copyright (C) IBM Corp. 2005,2006
|
|
|
|
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
|
|
|
|
* Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
|
|
* Volker Sameske <sameske@de.ibm.com>
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/reboot.h>
|
2006-12-04 14:39:58 +00:00
|
|
|
#include <linux/ctype.h>
|
2007-02-21 09:55:21 +00:00
|
|
|
#include <asm/ipl.h>
|
2006-09-20 13:58:49 +00:00
|
|
|
#include <asm/smp.h>
|
|
|
|
#include <asm/setup.h>
|
|
|
|
#include <asm/cpcmd.h>
|
|
|
|
#include <asm/cio.h>
|
2006-12-04 14:39:58 +00:00
|
|
|
#include <asm/ebcdic.h>
|
2006-12-04 14:40:26 +00:00
|
|
|
#include <asm/reset.h>
|
2007-02-05 20:18:37 +00:00
|
|
|
#include <asm/sclp.h>
|
2006-09-20 13:58:49 +00:00
|
|
|
|
|
|
|
#define IPL_PARM_BLOCK_VERSION 0
|
2006-12-04 14:39:58 +00:00
|
|
|
|
2007-02-05 20:18:37 +00:00
|
|
|
#define SCCB_VALID (s390_readinfo_sccb.header.response_code == 0x10)
|
|
|
|
#define SCCB_LOADPARM (&s390_readinfo_sccb.loadparm)
|
|
|
|
#define SCCB_FLAG (s390_readinfo_sccb.flags)
|
2006-09-20 13:58:49 +00:00
|
|
|
|
|
|
|
enum ipl_type {
|
|
|
|
IPL_TYPE_NONE = 1,
|
|
|
|
IPL_TYPE_UNKNOWN = 2,
|
|
|
|
IPL_TYPE_CCW = 4,
|
|
|
|
IPL_TYPE_FCP = 8,
|
2007-02-05 20:18:24 +00:00
|
|
|
IPL_TYPE_NSS = 16,
|
2006-09-20 13:58:49 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
#define IPL_NONE_STR "none"
|
|
|
|
#define IPL_UNKNOWN_STR "unknown"
|
|
|
|
#define IPL_CCW_STR "ccw"
|
|
|
|
#define IPL_FCP_STR "fcp"
|
2007-02-05 20:18:24 +00:00
|
|
|
#define IPL_NSS_STR "nss"
|
2006-09-20 13:58:49 +00:00
|
|
|
|
2007-02-21 09:55:37 +00:00
|
|
|
/*
|
|
|
|
* Must be in data section since the bss section
|
|
|
|
* is not cleared when these are accessed.
|
|
|
|
*/
|
|
|
|
u16 ipl_devno __attribute__((__section__(".data"))) = 0;
|
|
|
|
u32 ipl_flags __attribute__((__section__(".data"))) = 0;
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static char *ipl_type_str(enum ipl_type type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case IPL_TYPE_NONE:
|
|
|
|
return IPL_NONE_STR;
|
|
|
|
case IPL_TYPE_CCW:
|
|
|
|
return IPL_CCW_STR;
|
|
|
|
case IPL_TYPE_FCP:
|
|
|
|
return IPL_FCP_STR;
|
2007-02-05 20:18:24 +00:00
|
|
|
case IPL_TYPE_NSS:
|
|
|
|
return IPL_NSS_STR;
|
2006-09-20 13:58:49 +00:00
|
|
|
case IPL_TYPE_UNKNOWN:
|
|
|
|
default:
|
|
|
|
return IPL_UNKNOWN_STR;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
enum ipl_method {
|
|
|
|
IPL_METHOD_NONE,
|
|
|
|
IPL_METHOD_CCW_CIO,
|
|
|
|
IPL_METHOD_CCW_DIAG,
|
|
|
|
IPL_METHOD_CCW_VM,
|
|
|
|
IPL_METHOD_FCP_RO_DIAG,
|
|
|
|
IPL_METHOD_FCP_RW_DIAG,
|
|
|
|
IPL_METHOD_FCP_RO_VM,
|
2007-02-05 20:18:24 +00:00
|
|
|
IPL_METHOD_NSS,
|
2006-09-20 13:58:49 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
enum shutdown_action {
|
|
|
|
SHUTDOWN_REIPL,
|
|
|
|
SHUTDOWN_DUMP,
|
|
|
|
SHUTDOWN_STOP,
|
|
|
|
};
|
|
|
|
|
|
|
|
#define SHUTDOWN_REIPL_STR "reipl"
|
|
|
|
#define SHUTDOWN_DUMP_STR "dump"
|
|
|
|
#define SHUTDOWN_STOP_STR "stop"
|
|
|
|
|
|
|
|
static char *shutdown_action_str(enum shutdown_action action)
|
|
|
|
{
|
|
|
|
switch (action) {
|
|
|
|
case SHUTDOWN_REIPL:
|
|
|
|
return SHUTDOWN_REIPL_STR;
|
|
|
|
case SHUTDOWN_DUMP:
|
|
|
|
return SHUTDOWN_DUMP_STR;
|
|
|
|
case SHUTDOWN_STOP:
|
|
|
|
return SHUTDOWN_STOP_STR;
|
|
|
|
default:
|
2007-02-21 09:55:24 +00:00
|
|
|
return NULL;
|
2006-09-20 13:58:49 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int diag308_set_works = 0;
|
|
|
|
|
|
|
|
static int reipl_capabilities = IPL_TYPE_UNKNOWN;
|
2007-02-05 20:18:24 +00:00
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
|
|
|
|
static enum ipl_method reipl_method = IPL_METHOD_NONE;
|
|
|
|
static struct ipl_parameter_block *reipl_block_fcp;
|
|
|
|
static struct ipl_parameter_block *reipl_block_ccw;
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
static char reipl_nss_name[NSS_NAME_SIZE + 1];
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static int dump_capabilities = IPL_TYPE_NONE;
|
|
|
|
static enum ipl_type dump_type = IPL_TYPE_NONE;
|
|
|
|
static enum ipl_method dump_method = IPL_METHOD_NONE;
|
|
|
|
static struct ipl_parameter_block *dump_block_fcp;
|
|
|
|
static struct ipl_parameter_block *dump_block_ccw;
|
|
|
|
|
|
|
|
static enum shutdown_action on_panic_action = SHUTDOWN_STOP;
|
|
|
|
|
2007-02-21 09:55:21 +00:00
|
|
|
int diag308(unsigned long subcode, void *addr)
|
2006-09-20 13:58:49 +00:00
|
|
|
{
|
2006-09-28 14:56:43 +00:00
|
|
|
register unsigned long _addr asm("0") = (unsigned long) addr;
|
2006-09-20 13:58:49 +00:00
|
|
|
register unsigned long _rc asm("1") = 0;
|
|
|
|
|
2006-09-28 14:56:43 +00:00
|
|
|
asm volatile(
|
|
|
|
" diag %0,%2,0x308\n"
|
|
|
|
"0:\n"
|
|
|
|
EX_TABLE(0b,0b)
|
2006-09-20 13:58:49 +00:00
|
|
|
: "+d" (_addr), "+d" (_rc)
|
2006-09-28 14:56:43 +00:00
|
|
|
: "d" (subcode) : "cc", "memory");
|
2006-09-20 13:58:49 +00:00
|
|
|
return _rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* SYSFS */
|
|
|
|
|
|
|
|
#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
|
|
|
|
static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
|
|
|
|
char *page) \
|
|
|
|
{ \
|
|
|
|
return sprintf(page, _format, _value); \
|
|
|
|
} \
|
|
|
|
static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
|
|
|
|
__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL);
|
|
|
|
|
|
|
|
#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
|
|
|
|
static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
|
|
|
|
char *page) \
|
|
|
|
{ \
|
|
|
|
return sprintf(page, _fmt_out, \
|
|
|
|
(unsigned long long) _value); \
|
|
|
|
} \
|
|
|
|
static ssize_t sys_##_prefix##_##_name##_store(struct subsystem *subsys,\
|
|
|
|
const char *buf, size_t len) \
|
|
|
|
{ \
|
|
|
|
unsigned long long value; \
|
|
|
|
if (sscanf(buf, _fmt_in, &value) != 1) \
|
|
|
|
return -EINVAL; \
|
|
|
|
_value = value; \
|
|
|
|
return len; \
|
|
|
|
} \
|
|
|
|
static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
|
|
|
|
__ATTR(_name,(S_IRUGO | S_IWUSR), \
|
|
|
|
sys_##_prefix##_##_name##_show, \
|
|
|
|
sys_##_prefix##_##_name##_store);
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
|
|
|
|
static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
|
|
|
|
char *page) \
|
|
|
|
{ \
|
|
|
|
return sprintf(page, _fmt_out, _value); \
|
|
|
|
} \
|
|
|
|
static ssize_t sys_##_prefix##_##_name##_store(struct subsystem *subsys,\
|
|
|
|
const char *buf, size_t len) \
|
|
|
|
{ \
|
|
|
|
if (sscanf(buf, _fmt_in, _value) != 1) \
|
|
|
|
return -EINVAL; \
|
|
|
|
return len; \
|
|
|
|
} \
|
|
|
|
static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
|
|
|
|
__ATTR(_name,(S_IRUGO | S_IWUSR), \
|
|
|
|
sys_##_prefix##_##_name##_show, \
|
|
|
|
sys_##_prefix##_##_name##_store);
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static void make_attrs_ro(struct attribute **attrs)
|
|
|
|
{
|
|
|
|
while (*attrs) {
|
|
|
|
(*attrs)->mode = S_IRUGO;
|
|
|
|
attrs++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ipl section
|
|
|
|
*/
|
|
|
|
|
|
|
|
static enum ipl_type ipl_get_type(void)
|
|
|
|
{
|
|
|
|
struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
if (ipl_flags & IPL_NSS_VALID)
|
|
|
|
return IPL_TYPE_NSS;
|
2006-09-20 13:59:15 +00:00
|
|
|
if (!(ipl_flags & IPL_DEVNO_VALID))
|
2006-09-20 13:58:49 +00:00
|
|
|
return IPL_TYPE_UNKNOWN;
|
2006-09-20 13:59:15 +00:00
|
|
|
if (!(ipl_flags & IPL_PARMBLOCK_VALID))
|
2006-09-20 13:58:49 +00:00
|
|
|
return IPL_TYPE_CCW;
|
|
|
|
if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION)
|
|
|
|
return IPL_TYPE_UNKNOWN;
|
|
|
|
if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP)
|
|
|
|
return IPL_TYPE_UNKNOWN;
|
|
|
|
return IPL_TYPE_FCP;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t ipl_type_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
return sprintf(page, "%s\n", ipl_type_str(ipl_get_type()));
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
|
|
|
|
|
|
|
|
static ssize_t sys_ipl_device_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
|
|
|
|
|
|
|
|
switch (ipl_get_type()) {
|
|
|
|
case IPL_TYPE_CCW:
|
|
|
|
return sprintf(page, "0.0.%04x\n", ipl_devno);
|
|
|
|
case IPL_TYPE_FCP:
|
|
|
|
return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno);
|
|
|
|
default:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute sys_ipl_device_attr =
|
|
|
|
__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
|
|
|
|
|
|
|
|
static ssize_t ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off,
|
|
|
|
size_t count)
|
|
|
|
{
|
|
|
|
unsigned int size = IPL_PARMBLOCK_SIZE;
|
|
|
|
|
|
|
|
if (off > size)
|
|
|
|
return 0;
|
|
|
|
if (off + count > size)
|
|
|
|
count = size - off;
|
|
|
|
memcpy(buf, (void *)IPL_PARMBLOCK_START + off, count);
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct bin_attribute ipl_parameter_attr = {
|
|
|
|
.attr = {
|
|
|
|
.name = "binary_parameter",
|
|
|
|
.mode = S_IRUGO,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
.size = PAGE_SIZE,
|
|
|
|
.read = &ipl_parameter_read,
|
|
|
|
};
|
|
|
|
|
|
|
|
static ssize_t ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off,
|
|
|
|
size_t count)
|
|
|
|
{
|
|
|
|
unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
|
|
|
|
void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
|
|
|
|
|
|
|
|
if (off > size)
|
|
|
|
return 0;
|
|
|
|
if (off + count > size)
|
|
|
|
count = size - off;
|
|
|
|
memcpy(buf, scp_data + off, count);
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct bin_attribute ipl_scp_data_attr = {
|
|
|
|
.attr = {
|
|
|
|
.name = "scp_data",
|
|
|
|
.mode = S_IRUGO,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
.size = PAGE_SIZE,
|
|
|
|
.read = &ipl_scp_data_read,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* FCP ipl device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long)
|
|
|
|
IPL_PARMBLOCK_START->ipl_info.fcp.wwpn);
|
|
|
|
DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long)
|
|
|
|
IPL_PARMBLOCK_START->ipl_info.fcp.lun);
|
|
|
|
DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long)
|
|
|
|
IPL_PARMBLOCK_START->ipl_info.fcp.bootprog);
|
|
|
|
DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long)
|
|
|
|
IPL_PARMBLOCK_START->ipl_info.fcp.br_lba);
|
|
|
|
|
|
|
|
static struct attribute *ipl_fcp_attrs[] = {
|
|
|
|
&sys_ipl_type_attr.attr,
|
|
|
|
&sys_ipl_device_attr.attr,
|
|
|
|
&sys_ipl_fcp_wwpn_attr.attr,
|
|
|
|
&sys_ipl_fcp_lun_attr.attr,
|
|
|
|
&sys_ipl_fcp_bootprog_attr.attr,
|
|
|
|
&sys_ipl_fcp_br_lba_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group ipl_fcp_attr_group = {
|
|
|
|
.attrs = ipl_fcp_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* CCW ipl device attributes */
|
|
|
|
|
2006-12-04 14:39:58 +00:00
|
|
|
static ssize_t ipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
char loadparm[LOADPARM_LEN + 1] = {};
|
|
|
|
|
|
|
|
if (!SCCB_VALID)
|
|
|
|
return sprintf(page, "#unknown#\n");
|
|
|
|
memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN);
|
|
|
|
EBCASC(loadparm, LOADPARM_LEN);
|
|
|
|
strstrip(loadparm);
|
|
|
|
return sprintf(page, "%s\n", loadparm);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute sys_ipl_ccw_loadparm_attr =
|
|
|
|
__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static struct attribute *ipl_ccw_attrs[] = {
|
|
|
|
&sys_ipl_type_attr.attr,
|
|
|
|
&sys_ipl_device_attr.attr,
|
2006-12-04 14:39:58 +00:00
|
|
|
&sys_ipl_ccw_loadparm_attr.attr,
|
2006-09-20 13:58:49 +00:00
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group ipl_ccw_attr_group = {
|
|
|
|
.attrs = ipl_ccw_attrs,
|
|
|
|
};
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
/* NSS ipl device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name);
|
|
|
|
|
|
|
|
static struct attribute *ipl_nss_attrs[] = {
|
|
|
|
&sys_ipl_type_attr.attr,
|
|
|
|
&sys_ipl_nss_name_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group ipl_nss_attr_group = {
|
|
|
|
.attrs = ipl_nss_attrs,
|
|
|
|
};
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
/* UNKNOWN ipl device attributes */
|
|
|
|
|
|
|
|
static struct attribute *ipl_unknown_attrs[] = {
|
|
|
|
&sys_ipl_type_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group ipl_unknown_attr_group = {
|
|
|
|
.attrs = ipl_unknown_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
static decl_subsys(ipl, NULL, NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* reipl section
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* FCP reipl device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n",
|
|
|
|
reipl_block_fcp->ipl_info.fcp.wwpn);
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n",
|
|
|
|
reipl_block_fcp->ipl_info.fcp.lun);
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
|
|
|
|
reipl_block_fcp->ipl_info.fcp.bootprog);
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
|
|
|
|
reipl_block_fcp->ipl_info.fcp.br_lba);
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
|
|
reipl_block_fcp->ipl_info.fcp.devno);
|
|
|
|
|
|
|
|
static struct attribute *reipl_fcp_attrs[] = {
|
|
|
|
&sys_reipl_fcp_device_attr.attr,
|
|
|
|
&sys_reipl_fcp_wwpn_attr.attr,
|
|
|
|
&sys_reipl_fcp_lun_attr.attr,
|
|
|
|
&sys_reipl_fcp_bootprog_attr.attr,
|
|
|
|
&sys_reipl_fcp_br_lba_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group reipl_fcp_attr_group = {
|
|
|
|
.name = IPL_FCP_STR,
|
|
|
|
.attrs = reipl_fcp_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* CCW reipl device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
|
|
reipl_block_ccw->ipl_info.ccw.devno);
|
|
|
|
|
2006-12-04 14:39:58 +00:00
|
|
|
static void reipl_get_ascii_loadparm(char *loadparm)
|
|
|
|
{
|
|
|
|
memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
|
|
|
|
LOADPARM_LEN);
|
|
|
|
EBCASC(loadparm, LOADPARM_LEN);
|
|
|
|
loadparm[LOADPARM_LEN] = 0;
|
|
|
|
strstrip(loadparm);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t reipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
char buf[LOADPARM_LEN + 1];
|
|
|
|
|
|
|
|
reipl_get_ascii_loadparm(buf);
|
|
|
|
return sprintf(page, "%s\n", buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
|
|
|
|
const char *buf, size_t len)
|
|
|
|
{
|
|
|
|
int i, lp_len;
|
|
|
|
|
|
|
|
/* ignore trailing newline */
|
|
|
|
lp_len = len;
|
|
|
|
if ((len > 0) && (buf[len - 1] == '\n'))
|
|
|
|
lp_len--;
|
|
|
|
/* loadparm can have max 8 characters and must not start with a blank */
|
|
|
|
if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
|
|
|
|
return -EINVAL;
|
|
|
|
/* loadparm can only contain "a-z,A-Z,0-9,SP,." */
|
|
|
|
for (i = 0; i < lp_len; i++) {
|
|
|
|
if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
|
|
|
|
(buf[i] == '.'))
|
|
|
|
continue;
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
/* initialize loadparm with blanks */
|
|
|
|
memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ', LOADPARM_LEN);
|
|
|
|
/* copy and convert to ebcdic */
|
|
|
|
memcpy(&reipl_block_ccw->ipl_info.ccw.load_param, buf, lp_len);
|
|
|
|
ASCEBC(reipl_block_ccw->ipl_info.ccw.load_param, LOADPARM_LEN);
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute sys_reipl_ccw_loadparm_attr =
|
|
|
|
__ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
|
|
|
|
reipl_ccw_loadparm_store);
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static struct attribute *reipl_ccw_attrs[] = {
|
|
|
|
&sys_reipl_ccw_device_attr.attr,
|
2006-12-04 14:39:58 +00:00
|
|
|
&sys_reipl_ccw_loadparm_attr.attr,
|
2006-09-20 13:58:49 +00:00
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group reipl_ccw_attr_group = {
|
|
|
|
.name = IPL_CCW_STR,
|
|
|
|
.attrs = reipl_ccw_attrs,
|
|
|
|
};
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
|
|
|
|
/* NSS reipl device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_STR_RW(reipl_nss, name, "%s\n", "%s\n", reipl_nss_name);
|
|
|
|
|
|
|
|
static struct attribute *reipl_nss_attrs[] = {
|
|
|
|
&sys_reipl_nss_name_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group reipl_nss_attr_group = {
|
|
|
|
.name = IPL_NSS_STR,
|
|
|
|
.attrs = reipl_nss_attrs,
|
|
|
|
};
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
/* reipl type */
|
|
|
|
|
|
|
|
static int reipl_set_type(enum ipl_type type)
|
|
|
|
{
|
|
|
|
if (!(reipl_capabilities & type))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
switch(type) {
|
|
|
|
case IPL_TYPE_CCW:
|
|
|
|
if (MACHINE_IS_VM)
|
|
|
|
reipl_method = IPL_METHOD_CCW_VM;
|
|
|
|
else
|
|
|
|
reipl_method = IPL_METHOD_CCW_CIO;
|
|
|
|
break;
|
|
|
|
case IPL_TYPE_FCP:
|
|
|
|
if (diag308_set_works)
|
|
|
|
reipl_method = IPL_METHOD_FCP_RW_DIAG;
|
|
|
|
else if (MACHINE_IS_VM)
|
|
|
|
reipl_method = IPL_METHOD_FCP_RO_VM;
|
|
|
|
else
|
|
|
|
reipl_method = IPL_METHOD_FCP_RO_DIAG;
|
|
|
|
break;
|
2007-02-05 20:18:24 +00:00
|
|
|
case IPL_TYPE_NSS:
|
|
|
|
reipl_method = IPL_METHOD_NSS;
|
|
|
|
break;
|
2006-09-20 13:58:49 +00:00
|
|
|
default:
|
|
|
|
reipl_method = IPL_METHOD_NONE;
|
|
|
|
}
|
|
|
|
reipl_type = type;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t reipl_type_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
return sprintf(page, "%s\n", ipl_type_str(reipl_type));
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t reipl_type_store(struct subsystem *subsys, const char *buf,
|
|
|
|
size_t len)
|
|
|
|
{
|
|
|
|
int rc = -EINVAL;
|
|
|
|
|
|
|
|
if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
|
|
|
|
rc = reipl_set_type(IPL_TYPE_CCW);
|
|
|
|
else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
|
|
|
|
rc = reipl_set_type(IPL_TYPE_FCP);
|
2007-02-05 20:18:24 +00:00
|
|
|
else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0)
|
|
|
|
rc = reipl_set_type(IPL_TYPE_NSS);
|
2006-09-20 13:58:49 +00:00
|
|
|
return (rc != 0) ? rc : len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute reipl_type_attr =
|
|
|
|
__ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
|
|
|
|
|
|
|
|
static decl_subsys(reipl, NULL, NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* dump section
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* FCP dump device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n",
|
|
|
|
dump_block_fcp->ipl_info.fcp.wwpn);
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n",
|
|
|
|
dump_block_fcp->ipl_info.fcp.lun);
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
|
|
|
|
dump_block_fcp->ipl_info.fcp.bootprog);
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
|
|
|
|
dump_block_fcp->ipl_info.fcp.br_lba);
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
|
|
dump_block_fcp->ipl_info.fcp.devno);
|
|
|
|
|
|
|
|
static struct attribute *dump_fcp_attrs[] = {
|
|
|
|
&sys_dump_fcp_device_attr.attr,
|
|
|
|
&sys_dump_fcp_wwpn_attr.attr,
|
|
|
|
&sys_dump_fcp_lun_attr.attr,
|
|
|
|
&sys_dump_fcp_bootprog_attr.attr,
|
|
|
|
&sys_dump_fcp_br_lba_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group dump_fcp_attr_group = {
|
|
|
|
.name = IPL_FCP_STR,
|
|
|
|
.attrs = dump_fcp_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* CCW dump device attributes */
|
|
|
|
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
|
|
dump_block_ccw->ipl_info.ccw.devno);
|
|
|
|
|
|
|
|
static struct attribute *dump_ccw_attrs[] = {
|
|
|
|
&sys_dump_ccw_device_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group dump_ccw_attr_group = {
|
|
|
|
.name = IPL_CCW_STR,
|
|
|
|
.attrs = dump_ccw_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* dump type */
|
|
|
|
|
|
|
|
static int dump_set_type(enum ipl_type type)
|
|
|
|
{
|
|
|
|
if (!(dump_capabilities & type))
|
|
|
|
return -EINVAL;
|
|
|
|
switch(type) {
|
|
|
|
case IPL_TYPE_CCW:
|
|
|
|
if (MACHINE_IS_VM)
|
|
|
|
dump_method = IPL_METHOD_CCW_VM;
|
|
|
|
else
|
|
|
|
dump_method = IPL_METHOD_CCW_CIO;
|
|
|
|
break;
|
|
|
|
case IPL_TYPE_FCP:
|
|
|
|
dump_method = IPL_METHOD_FCP_RW_DIAG;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
dump_method = IPL_METHOD_NONE;
|
|
|
|
}
|
|
|
|
dump_type = type;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t dump_type_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
return sprintf(page, "%s\n", ipl_type_str(dump_type));
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t dump_type_store(struct subsystem *subsys, const char *buf,
|
|
|
|
size_t len)
|
|
|
|
{
|
|
|
|
int rc = -EINVAL;
|
|
|
|
|
|
|
|
if (strncmp(buf, IPL_NONE_STR, strlen(IPL_NONE_STR)) == 0)
|
|
|
|
rc = dump_set_type(IPL_TYPE_NONE);
|
|
|
|
else if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
|
|
|
|
rc = dump_set_type(IPL_TYPE_CCW);
|
|
|
|
else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
|
|
|
|
rc = dump_set_type(IPL_TYPE_FCP);
|
|
|
|
return (rc != 0) ? rc : len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute dump_type_attr =
|
|
|
|
__ATTR(dump_type, 0644, dump_type_show, dump_type_store);
|
|
|
|
|
|
|
|
static decl_subsys(dump, NULL, NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Shutdown actions section
|
|
|
|
*/
|
|
|
|
|
|
|
|
static decl_subsys(shutdown_actions, NULL, NULL);
|
|
|
|
|
|
|
|
/* on panic */
|
|
|
|
|
|
|
|
static ssize_t on_panic_show(struct subsystem *subsys, char *page)
|
|
|
|
{
|
|
|
|
return sprintf(page, "%s\n", shutdown_action_str(on_panic_action));
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
|
|
|
|
size_t len)
|
|
|
|
{
|
|
|
|
if (strncmp(buf, SHUTDOWN_REIPL_STR, strlen(SHUTDOWN_REIPL_STR)) == 0)
|
|
|
|
on_panic_action = SHUTDOWN_REIPL;
|
|
|
|
else if (strncmp(buf, SHUTDOWN_DUMP_STR,
|
|
|
|
strlen(SHUTDOWN_DUMP_STR)) == 0)
|
|
|
|
on_panic_action = SHUTDOWN_DUMP;
|
|
|
|
else if (strncmp(buf, SHUTDOWN_STOP_STR,
|
|
|
|
strlen(SHUTDOWN_STOP_STR)) == 0)
|
|
|
|
on_panic_action = SHUTDOWN_STOP;
|
|
|
|
else
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct subsys_attribute on_panic_attr =
|
|
|
|
__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
|
|
|
|
|
|
|
|
void do_reipl(void)
|
|
|
|
{
|
|
|
|
struct ccw_dev_id devid;
|
|
|
|
static char buf[100];
|
2006-12-04 14:39:58 +00:00
|
|
|
char loadparm[LOADPARM_LEN + 1];
|
2006-09-20 13:58:49 +00:00
|
|
|
|
|
|
|
switch (reipl_method) {
|
|
|
|
case IPL_METHOD_CCW_CIO:
|
|
|
|
devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
|
2006-12-04 14:40:13 +00:00
|
|
|
if (ipl_get_type() == IPL_TYPE_CCW && devid.devno == ipl_devno)
|
|
|
|
diag308(DIAG308_IPL, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
devid.ssid = 0;
|
|
|
|
reipl_ccw_dev(&devid);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_CCW_VM:
|
2006-12-15 16:18:25 +00:00
|
|
|
reipl_get_ascii_loadparm(loadparm);
|
2006-12-04 14:39:58 +00:00
|
|
|
if (strlen(loadparm) == 0)
|
|
|
|
sprintf(buf, "IPL %X",
|
|
|
|
reipl_block_ccw->ipl_info.ccw.devno);
|
|
|
|
else
|
|
|
|
sprintf(buf, "IPL %X LOADPARM '%s'",
|
|
|
|
reipl_block_ccw->ipl_info.ccw.devno, loadparm);
|
2006-12-04 14:40:30 +00:00
|
|
|
__cpcmd(buf, NULL, 0, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
break;
|
|
|
|
case IPL_METHOD_CCW_DIAG:
|
|
|
|
diag308(DIAG308_SET, reipl_block_ccw);
|
|
|
|
diag308(DIAG308_IPL, NULL);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_FCP_RW_DIAG:
|
|
|
|
diag308(DIAG308_SET, reipl_block_fcp);
|
|
|
|
diag308(DIAG308_IPL, NULL);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_FCP_RO_DIAG:
|
|
|
|
diag308(DIAG308_IPL, NULL);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_FCP_RO_VM:
|
2006-12-04 14:40:30 +00:00
|
|
|
__cpcmd("IPL", NULL, 0, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
break;
|
2007-02-05 20:18:24 +00:00
|
|
|
case IPL_METHOD_NSS:
|
|
|
|
sprintf(buf, "IPL %s", reipl_nss_name);
|
|
|
|
__cpcmd(buf, NULL, 0, NULL);
|
|
|
|
break;
|
2006-09-20 13:58:49 +00:00
|
|
|
case IPL_METHOD_NONE:
|
|
|
|
default:
|
|
|
|
if (MACHINE_IS_VM)
|
2006-12-04 14:40:30 +00:00
|
|
|
__cpcmd("IPL", NULL, 0, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
diag308(DIAG308_IPL, NULL);
|
|
|
|
break;
|
|
|
|
}
|
2006-12-04 14:40:05 +00:00
|
|
|
signal_processor(smp_processor_id(), sigp_stop_and_store_status);
|
2006-09-20 13:58:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void do_dump(void)
|
|
|
|
{
|
|
|
|
struct ccw_dev_id devid;
|
|
|
|
static char buf[100];
|
|
|
|
|
|
|
|
switch (dump_method) {
|
|
|
|
case IPL_METHOD_CCW_CIO:
|
2006-12-04 14:40:33 +00:00
|
|
|
smp_send_stop();
|
2006-09-20 13:58:49 +00:00
|
|
|
devid.devno = dump_block_ccw->ipl_info.ccw.devno;
|
|
|
|
devid.ssid = 0;
|
|
|
|
reipl_ccw_dev(&devid);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_CCW_VM:
|
2006-12-04 14:40:33 +00:00
|
|
|
smp_send_stop();
|
2006-09-20 13:58:49 +00:00
|
|
|
sprintf(buf, "STORE STATUS");
|
2006-12-04 14:40:30 +00:00
|
|
|
__cpcmd(buf, NULL, 0, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
|
2006-12-04 14:40:30 +00:00
|
|
|
__cpcmd(buf, NULL, 0, NULL);
|
2006-09-20 13:58:49 +00:00
|
|
|
break;
|
|
|
|
case IPL_METHOD_CCW_DIAG:
|
|
|
|
diag308(DIAG308_SET, dump_block_ccw);
|
|
|
|
diag308(DIAG308_DUMP, NULL);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_FCP_RW_DIAG:
|
|
|
|
diag308(DIAG308_SET, dump_block_fcp);
|
|
|
|
diag308(DIAG308_DUMP, NULL);
|
|
|
|
break;
|
|
|
|
case IPL_METHOD_NONE:
|
|
|
|
default:
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
printk(KERN_EMERG "Dump failed!\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* init functions */
|
|
|
|
|
|
|
|
static int __init ipl_register_fcp_files(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = sysfs_create_group(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_fcp_attr_group);
|
|
|
|
if (rc)
|
|
|
|
goto out;
|
|
|
|
rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_parameter_attr);
|
|
|
|
if (rc)
|
|
|
|
goto out_ipl_parm;
|
|
|
|
rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_scp_data_attr);
|
|
|
|
if (!rc)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
|
|
|
|
|
|
|
|
out_ipl_parm:
|
|
|
|
sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
|
|
|
|
out:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init ipl_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = firmware_register(&ipl_subsys);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
switch (ipl_get_type()) {
|
|
|
|
case IPL_TYPE_CCW:
|
|
|
|
rc = sysfs_create_group(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_ccw_attr_group);
|
|
|
|
break;
|
|
|
|
case IPL_TYPE_FCP:
|
|
|
|
rc = ipl_register_fcp_files();
|
|
|
|
break;
|
2007-02-05 20:18:24 +00:00
|
|
|
case IPL_TYPE_NSS:
|
|
|
|
rc = sysfs_create_group(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_nss_attr_group);
|
|
|
|
break;
|
2006-09-20 13:58:49 +00:00
|
|
|
default:
|
|
|
|
rc = sysfs_create_group(&ipl_subsys.kset.kobj,
|
|
|
|
&ipl_unknown_attr_group);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (rc)
|
|
|
|
firmware_unregister(&ipl_subsys);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __init reipl_probe(void)
|
|
|
|
{
|
|
|
|
void *buffer;
|
|
|
|
|
|
|
|
buffer = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!buffer)
|
|
|
|
return;
|
|
|
|
if (diag308(DIAG308_STORE, buffer) == DIAG308_RC_OK)
|
|
|
|
diag308_set_works = 1;
|
|
|
|
free_page((unsigned long)buffer);
|
|
|
|
}
|
|
|
|
|
2007-02-05 20:18:24 +00:00
|
|
|
static int __init reipl_nss_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (!MACHINE_IS_VM)
|
|
|
|
return 0;
|
|
|
|
rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_nss_attr_group);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
strncpy(reipl_nss_name, kernel_nss_name, NSS_NAME_SIZE + 1);
|
|
|
|
reipl_capabilities |= IPL_TYPE_NSS;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-09-20 13:58:49 +00:00
|
|
|
static int __init reipl_ccw_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!reipl_block_ccw)
|
|
|
|
return -ENOMEM;
|
|
|
|
rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_ccw_attr_group);
|
|
|
|
if (rc) {
|
|
|
|
free_page((unsigned long)reipl_block_ccw);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
|
|
|
|
reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
|
|
reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
|
|
|
|
reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
|
2006-12-04 14:39:58 +00:00
|
|
|
/* check if read scp info worked and set loadparm */
|
|
|
|
if (SCCB_VALID)
|
|
|
|
memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
|
|
|
|
SCCB_LOADPARM, LOADPARM_LEN);
|
|
|
|
else
|
|
|
|
/* read scp info failed: set empty loadparm (EBCDIC blanks) */
|
|
|
|
memset(reipl_block_ccw->ipl_info.ccw.load_param, 0x40,
|
|
|
|
LOADPARM_LEN);
|
|
|
|
/* FIXME: check for diag308_set_works when enabling diag ccw reipl */
|
|
|
|
if (!MACHINE_IS_VM)
|
|
|
|
sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
|
2006-09-20 13:58:49 +00:00
|
|
|
if (ipl_get_type() == IPL_TYPE_CCW)
|
|
|
|
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
|
|
|
|
reipl_capabilities |= IPL_TYPE_CCW;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init reipl_fcp_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if ((!diag308_set_works) && (ipl_get_type() != IPL_TYPE_FCP))
|
|
|
|
return 0;
|
|
|
|
if ((!diag308_set_works) && (ipl_get_type() == IPL_TYPE_FCP))
|
|
|
|
make_attrs_ro(reipl_fcp_attrs);
|
|
|
|
|
|
|
|
reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!reipl_block_fcp)
|
|
|
|
return -ENOMEM;
|
|
|
|
rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_fcp_attr_group);
|
|
|
|
if (rc) {
|
|
|
|
free_page((unsigned long)reipl_block_fcp);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
if (ipl_get_type() == IPL_TYPE_FCP) {
|
|
|
|
memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE);
|
|
|
|
} else {
|
|
|
|
reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
|
|
|
|
reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
|
|
reipl_block_fcp->hdr.blk0_len =
|
|
|
|
sizeof(reipl_block_fcp->ipl_info.fcp);
|
|
|
|
reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
|
|
|
|
reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL;
|
|
|
|
}
|
|
|
|
reipl_capabilities |= IPL_TYPE_FCP;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init reipl_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = firmware_register(&reipl_subsys);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = subsys_create_file(&reipl_subsys, &reipl_type_attr);
|
|
|
|
if (rc) {
|
|
|
|
firmware_unregister(&reipl_subsys);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
rc = reipl_ccw_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = reipl_fcp_init();
|
2007-02-05 20:18:24 +00:00
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = reipl_nss_init();
|
2006-09-20 13:58:49 +00:00
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = reipl_set_type(ipl_get_type());
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init dump_ccw_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!dump_block_ccw)
|
|
|
|
return -ENOMEM;
|
|
|
|
rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_ccw_attr_group);
|
|
|
|
if (rc) {
|
|
|
|
free_page((unsigned long)dump_block_ccw);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
|
|
|
|
dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
|
|
dump_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
|
|
|
|
dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
|
|
|
|
dump_capabilities |= IPL_TYPE_CCW;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init dump_fcp_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
2006-12-04 14:39:58 +00:00
|
|
|
if(!(SCCB_FLAG & 0x2) || !SCCB_VALID)
|
2006-09-20 13:58:49 +00:00
|
|
|
return 0; /* LDIPL DUMP is not installed */
|
|
|
|
if (!diag308_set_works)
|
|
|
|
return 0;
|
|
|
|
dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!dump_block_fcp)
|
|
|
|
return -ENOMEM;
|
|
|
|
rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_fcp_attr_group);
|
|
|
|
if (rc) {
|
|
|
|
free_page((unsigned long)dump_block_fcp);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
|
|
|
|
dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
|
|
dump_block_fcp->hdr.blk0_len = sizeof(dump_block_fcp->ipl_info.fcp);
|
|
|
|
dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
|
|
|
|
dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP;
|
|
|
|
dump_capabilities |= IPL_TYPE_FCP;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define SHUTDOWN_ON_PANIC_PRIO 0
|
|
|
|
|
|
|
|
static int shutdown_on_panic_notify(struct notifier_block *self,
|
|
|
|
unsigned long event, void *data)
|
|
|
|
{
|
|
|
|
if (on_panic_action == SHUTDOWN_DUMP)
|
|
|
|
do_dump();
|
|
|
|
else if (on_panic_action == SHUTDOWN_REIPL)
|
|
|
|
do_reipl();
|
|
|
|
return NOTIFY_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block shutdown_on_panic_nb = {
|
|
|
|
.notifier_call = shutdown_on_panic_notify,
|
|
|
|
.priority = SHUTDOWN_ON_PANIC_PRIO
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init dump_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = firmware_register(&dump_subsys);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = subsys_create_file(&dump_subsys, &dump_type_attr);
|
|
|
|
if (rc) {
|
|
|
|
firmware_unregister(&dump_subsys);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
rc = dump_ccw_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = dump_fcp_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
dump_set_type(IPL_TYPE_NONE);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init shutdown_actions_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = firmware_register(&shutdown_actions_subsys);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = subsys_create_file(&shutdown_actions_subsys, &on_panic_attr);
|
|
|
|
if (rc) {
|
|
|
|
firmware_unregister(&shutdown_actions_subsys);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
|
|
&shutdown_on_panic_nb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init s390_ipl_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
reipl_probe();
|
|
|
|
rc = ipl_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = reipl_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = dump_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
rc = shutdown_actions_init();
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
__initcall(s390_ipl_init);
|
2006-12-04 14:40:26 +00:00
|
|
|
|
|
|
|
static LIST_HEAD(rcall);
|
|
|
|
static DEFINE_MUTEX(rcall_mutex);
|
|
|
|
|
|
|
|
void register_reset_call(struct reset_call *reset)
|
|
|
|
{
|
|
|
|
mutex_lock(&rcall_mutex);
|
|
|
|
list_add(&reset->list, &rcall);
|
|
|
|
mutex_unlock(&rcall_mutex);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(register_reset_call);
|
|
|
|
|
|
|
|
void unregister_reset_call(struct reset_call *reset)
|
|
|
|
{
|
|
|
|
mutex_lock(&rcall_mutex);
|
|
|
|
list_del(&reset->list);
|
|
|
|
mutex_unlock(&rcall_mutex);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(unregister_reset_call);
|
|
|
|
|
|
|
|
static void do_reset_calls(void)
|
|
|
|
{
|
|
|
|
struct reset_call *reset;
|
|
|
|
|
|
|
|
list_for_each_entry(reset, &rcall, list)
|
|
|
|
reset->fn();
|
|
|
|
}
|
|
|
|
|
2006-12-15 16:18:27 +00:00
|
|
|
extern __u32 dump_prefix_page;
|
2006-12-04 14:40:26 +00:00
|
|
|
|
|
|
|
void s390_reset_system(void)
|
|
|
|
{
|
|
|
|
struct _lowcore *lc;
|
|
|
|
|
|
|
|
lc = (struct _lowcore *)(unsigned long) store_prefix();
|
2006-12-15 16:18:22 +00:00
|
|
|
|
|
|
|
/* Stack for interrupt/machine check handler */
|
2006-12-04 14:40:26 +00:00
|
|
|
lc->panic_stack = S390_lowcore.panic_stack;
|
|
|
|
|
2006-12-15 16:18:27 +00:00
|
|
|
/* Save prefix page address for dump case */
|
|
|
|
dump_prefix_page = (unsigned long) lc;
|
|
|
|
|
2006-12-04 14:40:26 +00:00
|
|
|
/* Disable prefixing */
|
|
|
|
set_prefix(0);
|
|
|
|
|
|
|
|
/* Disable lowcore protection */
|
|
|
|
__ctl_clear_bit(0,28);
|
|
|
|
|
|
|
|
/* Set new machine check handler */
|
2007-02-05 20:18:17 +00:00
|
|
|
S390_lowcore.mcck_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
|
2006-12-04 14:40:26 +00:00
|
|
|
S390_lowcore.mcck_new_psw.addr =
|
2007-02-05 20:18:37 +00:00
|
|
|
PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler;
|
2006-12-15 16:18:22 +00:00
|
|
|
|
|
|
|
/* Set new program check handler */
|
2007-02-05 20:18:17 +00:00
|
|
|
S390_lowcore.program_new_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
|
2006-12-15 16:18:22 +00:00
|
|
|
S390_lowcore.program_new_psw.addr =
|
2007-02-05 20:18:37 +00:00
|
|
|
PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
|
2006-12-15 16:18:22 +00:00
|
|
|
|
2006-12-04 14:40:26 +00:00
|
|
|
do_reset_calls();
|
|
|
|
}
|