diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/head31.S | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/head64.S | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/ipl.c | 942 | ||||
| -rw-r--r-- | arch/s390/kernel/reipl.S | 33 | ||||
| -rw-r--r-- | arch/s390/kernel/reipl64.S | 34 | ||||
| -rw-r--r-- | arch/s390/kernel/reipl_diag.c | 39 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 220 | ||||
| -rw-r--r-- | arch/s390/kernel/smp.c | 10 |
9 files changed, 1002 insertions, 284 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 33a5069c0e1..aa978978d3d 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -6,7 +6,7 @@ EXTRA_AFLAGS := -traditional obj-y := bitmap.o traps.o time.o process.o \ setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ - semaphore.o s390_ext.o debug.o profile.o irq.o reipl_diag.o + semaphore.o s390_ext.o debug.o profile.o irq.o ipl.o obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o) obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o) diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index 0e46077d714..d8bb68a7252 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -38,6 +38,7 @@ startup:basr %r13,0 # get base startup_continue: basr %r13,0 # get base .LPG1: GET_IPL_DEVICE + mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0) lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area # move IPL device to lowcore @@ -274,6 +275,8 @@ startup_continue: .Lparmaddr: .long PARMAREA .Lsccbaddr: .long .Lsccb .org 0x12000 +.globl s390_readinfo_sccb +s390_readinfo_sccb: .Lsccb: .hword 0x1000 # length, one page .byte 0x00,0x00,0x00 diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 3e0341acd04..c2005101fee 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -41,6 +41,7 @@ startup_continue: srl %r13,1 GET_IPL_DEVICE lhi %r1,1 # mode 1 = esame + mvi __LC_AR_MODE_ID,1 # set esame flag slr %r0,%r0 # set cpuid to zero sigp %r1,%r0,0x12 # switch to esame mode sam64 # switch to 64 bit mode @@ -269,6 +270,8 @@ startup_continue: .quad PARMAREA .org 0x12000 +.globl s390_readinfo_sccb +s390_readinfo_sccb: .Lsccb: .hword 0x1000 # length, one page .byte 0x00,0x00,0x00 diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c new file mode 100644 index 00000000000..105ee15a2b3 --- /dev/null +++ b/arch/s390/kernel/ipl.c @@ -0,0 +1,942 @@ +/* + * 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> +#include <asm/smp.h> +#include <asm/setup.h> +#include <asm/cpcmd.h> +#include <asm/cio.h> + +#define IPL_PARM_BLOCK_VERSION 0 + +enum ipl_type { + IPL_TYPE_NONE = 1, + IPL_TYPE_UNKNOWN = 2, + IPL_TYPE_CCW = 4, + IPL_TYPE_FCP = 8, +}; + +#define IPL_NONE_STR "none" +#define IPL_UNKNOWN_STR "unknown" +#define IPL_CCW_STR "ccw" +#define IPL_FCP_STR "fcp" + +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; + 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, +}; + +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: + BUG(); + } +} + +enum diag308_subcode { + DIAG308_IPL = 3, + DIAG308_DUMP = 4, + DIAG308_SET = 5, + DIAG308_STORE = 6, +}; + +enum diag308_ipl_type { + DIAG308_IPL_TYPE_FCP = 0, + DIAG308_IPL_TYPE_CCW = 2, +}; + +enum diag308_opt { + DIAG308_IPL_OPT_IPL = 0x10, + DIAG308_IPL_OPT_DUMP = 0x20, +}; + +enum diag308_rc { + DIAG308_RC_OK = 1, +}; + +static int diag308_set_works = 0; + +static int reipl_capabilities = IPL_TYPE_UNKNOWN; +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; + +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; + +static int diag308(unsigned long subcode, void *addr) +{ + register unsigned long _addr asm("0") = (unsigned long)addr; + register unsigned long _rc asm("1") = 0; + + asm volatile ( + " diag %0,%2,0x308\n" + "0: \n" + ".section __ex_table,\"a\"\n" +#ifdef CONFIG_64BIT + " .align 8\n" + " .quad 0b, 0b\n" +#else + " .align 4\n" + " .long 0b, 0b\n" +#endif + ".previous\n" + : "+d" (_addr), "+d" (_rc) + : "d" (subcode) : "cc", "memory" ); + + 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); + +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; + + if (!IPL_DEVNO_VALID) + return IPL_TYPE_UNKNOWN; + if (!IPL_PARMBLOCK_VALID) + 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 */ + +static struct attribute *ipl_ccw_attrs[] = { + &sys_ipl_type_attr.attr, + &sys_ipl_device_attr.attr, + NULL, +}; + +static struct attribute_group ipl_ccw_attr_group = { + .attrs = ipl_ccw_attrs, +}; + +/* 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); + +static struct attribute *reipl_ccw_attrs[] = { + &sys_reipl_ccw_device_attr.attr, + NULL, +}; + +static struct attribute_group reipl_ccw_attr_group = { + .name = IPL_CCW_STR, + .attrs = reipl_ccw_attrs, +}; + +/* 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; + 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); + 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); + +#ifdef CONFIG_SMP +static void dump_smp_stop_all(void) +{ + int cpu; + preempt_disable(); + for_each_online_cpu(cpu) { + if (cpu == smp_processor_id()) + continue; + while (signal_processor(cpu, sigp_stop) == sigp_busy) + udelay(10); + } + preempt_enable(); +} +#else +#define dump_smp_stop_all() do { } while (0) +#endif + +/* + * 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); + +static void print_fcp_block(struct ipl_parameter_block *fcp_block) +{ + printk(KERN_EMERG "wwpn: %016llx\n", + (unsigned long long)fcp_block->ipl_info.fcp.wwpn); + printk(KERN_EMERG "lun: %016llx\n", + (unsigned long long)fcp_block->ipl_info.fcp.lun); + printk(KERN_EMERG "bootprog: %lld\n", + (unsigned long long)fcp_block->ipl_info.fcp.bootprog); + printk(KERN_EMERG "br_lba: %lld\n", + (unsigned long long)fcp_block->ipl_info.fcp.br_lba); + printk(KERN_EMERG "device: %llx\n", + (unsigned long long)fcp_block->ipl_info.fcp.devno); + printk(KERN_EMERG "opt: %x\n", fcp_block->ipl_info.fcp.opt); +} + +void do_reipl(void) +{ + struct ccw_dev_id devid; + static char buf[100]; + + switch (reipl_type) { + case IPL_TYPE_CCW: + printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n", + reipl_block_ccw->ipl_info.ccw.devno); + break; + case IPL_TYPE_FCP: + printk(KERN_EMERG "reboot on fcp device:\n"); + print_fcp_block(reipl_block_fcp); + break; + default: + break; + } + + switch (reipl_method) { + case IPL_METHOD_CCW_CIO: + devid.devno = reipl_block_ccw->ipl_info.ccw.devno; + devid.ssid = 0; + reipl_ccw_dev(&devid); + break; + case IPL_METHOD_CCW_VM: + sprintf(buf, "IPL %X", reipl_block_ccw->ipl_info.ccw.devno); + cpcmd(buf, NULL, 0, NULL); + 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: + cpcmd("IPL", NULL, 0, NULL); + break; + case IPL_METHOD_NONE: + default: + if (MACHINE_IS_VM) + cpcmd("IPL", NULL, 0, NULL); + diag308(DIAG308_IPL, NULL); + break; + } + panic("reipl failed!\n"); +} + +static void do_dump(void) +{ + struct ccw_dev_id devid; + static char buf[100]; + + switch (dump_type) { + case IPL_TYPE_CCW: + printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n", + dump_block_ccw->ipl_info.ccw.devno); + break; + case IPL_TYPE_FCP: + printk(KERN_EMERG "Automatic dump on fcp device:\n"); + print_fcp_block(dump_block_fcp); + break; + default: + return; + } + + switch (dump_method) { + case IPL_METHOD_CCW_CIO: + dump_smp_stop_all(); + devid.devno = dump_block_ccw->ipl_info.ccw.devno; + devid.ssid = 0; + reipl_ccw_dev(&devid); + break; + case IPL_METHOD_CCW_VM: + dump_smp_stop_all(); + sprintf(buf, "STORE STATUS"); + cpcmd(buf, NULL, 0, NULL); + sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); + cpcmd(buf, NULL, 0, NULL); + 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; + 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); +} + +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; + 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(); + 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; +} + +extern char s390_readinfo_sccb[]; + +static int __init dump_fcp_init(void) +{ + int rc; + + if(!(s390_readinfo_sccb[91] & 0x2)) + 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); diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S index 658e5ac484f..4562cdbce8e 100644 --- a/arch/s390/kernel/reipl.S +++ b/arch/s390/kernel/reipl.S @@ -8,13 +8,30 @@ #include <asm/lowcore.h> - .globl do_reipl -do_reipl: basr %r13,0 + .globl do_reipl_asm +do_reipl_asm: basr %r13,0 .Lpg0: lpsw .Lnewpsw-.Lpg0(%r13) -.Lpg1: lctl %c6,%c6,.Lall-.Lpg0(%r13) - stctl %c0,%c0,.Lctlsave-.Lpg0(%r13) - ni .Lctlsave-.Lpg0(%r13),0xef - lctl %c0,%c0,.Lctlsave-.Lpg0(%r13) + + # switch off lowcore protection + +.Lpg1: stctl %c0,%c0,.Lctlsave1-.Lpg0(%r13) + stctl %c0,%c0,.Lctlsave2-.Lpg0(%r13) + ni .Lctlsave1-.Lpg0(%r13),0xef + lctl %c0,%c0,.Lctlsave1-.Lpg0(%r13) + + # do store status of all registers + + stm %r0,%r15,__LC_GPREGS_SAVE_AREA + stctl %c0,%c15,__LC_CREGS_SAVE_AREA + mvc __LC_CREGS_SAVE_AREA(4),.Lctlsave2-.Lpg0(%r13) + stam %a0,%a15,__LC_AREGS_SAVE_AREA + stpx __LC_PREFIX_SAVE_AREA + stckc .Lclkcmp-.Lpg0(%r13) + mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13) + stpt __LC_CPU_TIMER_SAVE_AREA + st %r13, __LC_PSW_SAVE_AREA+4 + + lctl %c6,%c6,.Lall-.Lpg0(%r13) lr %r1,%r2 mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13) stsch .Lschib-.Lpg0(%r13) @@ -46,9 +63,11 @@ do_reipl: basr %r13,0 .Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13) lpsw .Ldispsw-.Lpg0(%r13) .align 8 +.Lclkcmp: .quad 0x0000000000000000 .Lall: .long 0xff000000 .Lnull: .long 0x00000000 -.Lctlsave: .long 0x00000000 +.Lctlsave1: .long 0x00000000 +.Lctlsave2: .long 0x00000000 .align 8 .Lnewpsw: .long 0x00080000,0x80000000+.Lpg1 .Lpcnew: .long 0x00080000,0x80000000+.Lecs diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S index 4d090d60f3e..95bd1e234f6 100644 --- a/arch/s390/kernel/reipl64.S +++ b/arch/s390/kernel/reipl64.S @@ -8,13 +8,30 @@ */ #include <asm/lowcore.h> - .globl do_reipl -do_reipl: basr %r13,0 -.Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) + .globl do_reipl_asm +do_reipl_asm: basr %r13,0 + + # do store status of all registers + +.Lpg0: stg %r1,.Lregsave-.Lpg0(%r13) + lghi %r1,0x1000 + stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-0x1000(%r1) + lg %r0,.Lregsave-.Lpg0(%r13) + stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1) + stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1) + stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1) + stpx __LC_PREFIX_SAVE_AREA-0x1000(%r1) + stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1) + stckc .Lclkcmp-.Lpg0(%r13) + mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13) + stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1) + stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1) + + lpswe .Lnewpsw-.Lpg0(%r13) .Lpg1: lctlg %c6,%c6,.Lall-.Lpg0(%r13) - stctg %c0,%c0,.Lctlsave-.Lpg0(%r13) - ni .Lctlsave+4-.Lpg0(%r13),0xef - lctlg %c0,%c0,.Lctlsave-.Lpg0(%r13) + stctg %c0,%c0,.Lregsave-.Lpg0(%r13) + ni .Lregsave+4-.Lpg0(%r13),0xef + lctlg %c0,%c0,.Lregsave-.Lpg0(%r13) lgr %r1,%r2 mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13) stsch .Lschib-.Lpg0(%r13) @@ -50,8 +67,9 @@ do_reipl: basr %r13,0 st %r14,.Ldispsw+12-.Lpg0(%r13) lpswe .Ldispsw-.Lpg0(%r13) .align 8 +.Lclkcmp: .quad 0x0000000000000000 .Lall: .quad 0x00000000ff000000 -.Lctlsave: .quad 0x0000000000000000 +.Lregsave: .quad 0x0000000000000000 .Lnull: .long 0x0000000000000000 .align 16 /* @@ -92,5 +110,3 @@ do_reipl: basr %r13,0 .long 0x00000000,0x00000000 .long 0x00000000,0x00000000 - - diff --git a/arch/s390/kernel/reipl_diag.c b/arch/s390/kernel/reipl_diag.c deleted file mode 100644 index 1f33951ba43..00000000000 --- a/arch/s390/kernel/reipl_diag.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * This file contains the implementation of the - * Linux re-IPL support - * - * (C) Copyright IBM Corp. 2005 - * - * Author(s): Volker Sameske (sameske@de.ibm.com) - * - */ - -#include <linux/kernel.h> - -static unsigned int reipl_diag_rc1; -static unsigned int reipl_diag_rc2; - -/* - * re-IPL the system using the last used IPL parameters - */ -void reipl_diag(void) -{ - asm volatile ( - " la %%r4,0\n" - " la %%r5,0\n" - " diag %%r4,%2,0x308\n" - "0:\n" - " st %%r4,%0\n" - " st %%r5,%1\n" - ".section __ex_table,\"a\"\n" -#ifdef CONFIG_64BIT - " .align 8\n" - " .quad 0b, 0b\n" -#else - " .align 4\n" - " .long 0b, 0b\n" -#endif - ".previous\n" - : "=m" (reipl_diag_rc1), "=m" (reipl_diag_rc2) - : "d" (3) : "cc", "4", "5" ); -} diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 89051e8a5d8..f2a9165ca4f 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -285,16 +285,9 @@ void (*_machine_power_off)(void) = machine_power_off_smp; /* * Reboot, halt and power_off routines for non SMP. */ -extern void reipl(unsigned long devno); -extern void reipl_diag(void); static void do_machine_restart_nonsmp(char * __unused) { - reipl_diag(); - - if (MACHINE_IS_VM) - cpcmd ("IPL", NULL, 0, NULL); - else - reipl (0x10000 | S390_lowcore.ipl_device); + do_reipl(); } static void do_machine_halt_nonsmp(void) @@ -755,214 +748,3 @@ struct seq_operations cpuinfo_op = { .show = show_cpuinfo, }; -#define DEFINE_IPL_ATTR(_name, _format, _value) \ -static ssize_t ipl_##_name##_show(struct subsystem *subsys, \ - char *page) \ -{ \ - return sprintf(page, _format, _value); \ -} \ -static struct subsys_attribute ipl_##_name##_attr = \ - __ATTR(_name, S_IRUGO, ipl_##_name##_show, NULL); - -DEFINE_IPL_ATTR(wwpn, "0x%016llx\n", (unsigned long long) - IPL_PARMBLOCK_START->fcp.wwpn); -DEFINE_IPL_ATTR(lun, "0x%016llx\n", (unsigned long long) - IPL_PARMBLOCK_START->fcp.lun); -DEFINE_IPL_ATTR(bootprog, "%lld\n", (unsigned long long) - IPL_PARMBLOCK_START->fcp.bootprog); -DEFINE_IPL_ATTR(br_lba, "%lld\n", (unsigned long long) - IPL_PARMBLOCK_START->fcp.br_lba); - -enum ipl_type_type { - ipl_type_unknown, - ipl_type_ccw, - ipl_type_fcp, -}; - -static enum ipl_type_type -get_ipl_type(void) -{ - struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; - - if (!IPL_DEVNO_VALID) - return ipl_type_unknown; - if (!IPL_PARMBLOCK_VALID) - return ipl_type_ccw; - if (ipl->hdr.header.version > IPL_MAX_SUPPORTED_VERSION) - return ipl_type_unknown; - if (ipl->fcp.pbt != IPL_TYPE_FCP) - return ipl_type_unknown; - return ipl_type_fcp; -} - -static ssize_t -ipl_type_show(struct subsystem *subsys, char *page) -{ - switch (get_ipl_type()) { - case ipl_type_ccw: - return sprintf(page, "ccw\n"); - case ipl_type_fcp: - return sprintf(page, "fcp\n"); - default: - return sprintf(page, "unknown\n"); - } -} - -static struct subsys_attribute ipl_type_attr = __ATTR_RO(ipl_type); - -static ssize_t -ipl_device_show(struct subsystem *subsys, char *page) -{ - struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; - - switch (get_ipl_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->fcp.devno); - default: - return 0; - } -} - -static struct subsys_attribute ipl_device_attr = - __ATTR(device, S_IRUGO, ipl_device_show, NULL); - -static struct attribute *ipl_fcp_attrs[] = { - &ipl_type_attr.attr, - &ipl_device_attr.attr, - &ipl_wwpn_attr.attr, - &ipl_lun_attr.attr, - &ipl_bootprog_attr.attr, - &ipl_br_lba_attr.attr, - NULL, -}; - -static struct attribute_group ipl_fcp_attr_group = { - .attrs = ipl_fcp_attrs, -}; - -static struct attribute *ipl_ccw_attrs[] = { - &ipl_type_attr.attr, - &ipl_device_attr.attr, - NULL, -}; - -static struct attribute_group ipl_ccw_attr_group = { - .attrs = ipl_ccw_attrs, -}; - -static struct attribute *ipl_unknown_attrs[] = { - &ipl_type_attr.attr, - NULL, -}; - -static struct attribute_group ipl_unknown_attr_group = { - .attrs = ipl_unknown_attrs, -}; - -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->fcp.scp_data_len; - void *scp_data = &IPL_PARMBLOCK_START->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, -}; - -static decl_subsys(ipl, NULL, NULL); - -static int 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_device_sysfs_register(void) { - int rc; - - rc = firmware_register(&ipl_subsys); - if (rc) - goto out; - - switch (get_ipl_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; - default: - rc = sysfs_create_group(&ipl_subsys.kset.kobj, - &ipl_unknown_attr_group); - break; - } - - if (rc) - firmware_unregister(&ipl_subsys); -out: - return rc; -} - -__initcall(ipl_device_sysfs_register); diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 8e03219eea7..b2e6f4c8d38 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -59,9 +59,6 @@ static struct task_struct *current_set[NR_CPUS]; extern char vmhalt_cmd[]; extern char vmpoff_cmd[]; -extern void reipl(unsigned long devno); -extern void reipl_diag(void); - static void smp_ext_bitcall(int, ec_bit_sig); static void smp_ext_bitcall_others(ec_bit_sig); @@ -279,12 +276,7 @@ static void do_machine_restart(void * __unused) * interrupted by an external interrupt and s390irq * locks are always held disabled). */ - reipl_diag(); - - if (MACHINE_IS_VM) - cpcmd ("IPL", NULL, 0, NULL); - else - reipl (0x10000 | S390_lowcore.ipl_device); + do_reipl(); } void machine_restart_smp(char * __unused) |