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![Alexander Gordeev](/assets/img/avatar_default.png)
Macro mem_assign_absolute() is able to access the whole memory, but is only used and makes sense when updating the absolute lowcore. Instead, introduce get_abs_lowcore() and put_abs_lowcore() macros that limit access to absolute lowcore addresses only. Suggested-by: Heiko Carstens <hca@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2218 lines
56 KiB
C
2218 lines
56 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ipl/reipl/dump support for Linux on s390.
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*
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* Copyright IBM Corp. 2005, 2012
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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* Volker Sameske <sameske@de.ibm.com>
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*/
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#include <linux/types.h>
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/panic_notifier.h>
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#include <linux/reboot.h>
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#include <linux/ctype.h>
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#include <linux/fs.h>
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#include <linux/gfp.h>
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#include <linux/crash_dump.h>
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#include <linux/debug_locks.h>
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#include <asm/asm-extable.h>
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#include <asm/diag.h>
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#include <asm/ipl.h>
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#include <asm/smp.h>
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#include <asm/setup.h>
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#include <asm/cpcmd.h>
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#include <asm/ebcdic.h>
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#include <asm/sclp.h>
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#include <asm/checksum.h>
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#include <asm/debug.h>
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#include <asm/os_info.h>
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#include <asm/sections.h>
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#include <asm/boot_data.h>
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#include "entry.h"
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#define IPL_PARM_BLOCK_VERSION 0
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#define IPL_UNKNOWN_STR "unknown"
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#define IPL_CCW_STR "ccw"
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#define IPL_FCP_STR "fcp"
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#define IPL_FCP_DUMP_STR "fcp_dump"
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#define IPL_NVME_STR "nvme"
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#define IPL_NVME_DUMP_STR "nvme_dump"
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#define IPL_NSS_STR "nss"
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#define DUMP_CCW_STR "ccw"
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#define DUMP_FCP_STR "fcp"
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#define DUMP_NVME_STR "nvme"
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#define DUMP_NONE_STR "none"
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/*
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* Four shutdown trigger types are supported:
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* - panic
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* - halt
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* - power off
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* - reipl
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* - restart
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*/
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#define ON_PANIC_STR "on_panic"
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#define ON_HALT_STR "on_halt"
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#define ON_POFF_STR "on_poff"
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#define ON_REIPL_STR "on_reboot"
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#define ON_RESTART_STR "on_restart"
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struct shutdown_action;
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struct shutdown_trigger {
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char *name;
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struct shutdown_action *action;
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};
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/*
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* The following shutdown action types are supported:
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*/
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#define SHUTDOWN_ACTION_IPL_STR "ipl"
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#define SHUTDOWN_ACTION_REIPL_STR "reipl"
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#define SHUTDOWN_ACTION_DUMP_STR "dump"
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#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd"
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#define SHUTDOWN_ACTION_STOP_STR "stop"
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#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl"
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struct shutdown_action {
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char *name;
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void (*fn) (struct shutdown_trigger *trigger);
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int (*init) (void);
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int init_rc;
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};
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static char *ipl_type_str(enum ipl_type type)
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{
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switch (type) {
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case IPL_TYPE_CCW:
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return IPL_CCW_STR;
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case IPL_TYPE_FCP:
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return IPL_FCP_STR;
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case IPL_TYPE_FCP_DUMP:
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return IPL_FCP_DUMP_STR;
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case IPL_TYPE_NSS:
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return IPL_NSS_STR;
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case IPL_TYPE_NVME:
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return IPL_NVME_STR;
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case IPL_TYPE_NVME_DUMP:
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return IPL_NVME_DUMP_STR;
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case IPL_TYPE_UNKNOWN:
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default:
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return IPL_UNKNOWN_STR;
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}
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}
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enum dump_type {
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DUMP_TYPE_NONE = 1,
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DUMP_TYPE_CCW = 2,
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DUMP_TYPE_FCP = 4,
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DUMP_TYPE_NVME = 8,
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};
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static char *dump_type_str(enum dump_type type)
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{
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switch (type) {
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case DUMP_TYPE_NONE:
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return DUMP_NONE_STR;
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case DUMP_TYPE_CCW:
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return DUMP_CCW_STR;
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case DUMP_TYPE_FCP:
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return DUMP_FCP_STR;
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case DUMP_TYPE_NVME:
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return DUMP_NVME_STR;
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default:
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return NULL;
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}
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}
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int __bootdata_preserved(ipl_block_valid);
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struct ipl_parameter_block __bootdata_preserved(ipl_block);
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int __bootdata_preserved(ipl_secure_flag);
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unsigned long __bootdata_preserved(ipl_cert_list_addr);
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unsigned long __bootdata_preserved(ipl_cert_list_size);
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unsigned long __bootdata(early_ipl_comp_list_addr);
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unsigned long __bootdata(early_ipl_comp_list_size);
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static int reipl_capabilities = IPL_TYPE_UNKNOWN;
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static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
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static struct ipl_parameter_block *reipl_block_fcp;
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static struct ipl_parameter_block *reipl_block_nvme;
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static struct ipl_parameter_block *reipl_block_ccw;
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static struct ipl_parameter_block *reipl_block_nss;
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static struct ipl_parameter_block *reipl_block_actual;
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static int dump_capabilities = DUMP_TYPE_NONE;
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static enum dump_type dump_type = DUMP_TYPE_NONE;
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static struct ipl_parameter_block *dump_block_fcp;
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static struct ipl_parameter_block *dump_block_nvme;
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static struct ipl_parameter_block *dump_block_ccw;
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static struct sclp_ipl_info sclp_ipl_info;
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static bool reipl_nvme_clear;
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static bool reipl_fcp_clear;
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static bool reipl_ccw_clear;
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static inline int __diag308(unsigned long subcode, void *addr)
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{
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union register_pair r1;
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r1.even = (unsigned long) addr;
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r1.odd = 0;
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asm volatile(
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" diag %[r1],%[subcode],0x308\n"
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"0: nopr %%r7\n"
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EX_TABLE(0b,0b)
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: [r1] "+&d" (r1.pair)
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: [subcode] "d" (subcode)
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: "cc", "memory");
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return r1.odd;
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}
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int diag308(unsigned long subcode, void *addr)
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{
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diag_stat_inc(DIAG_STAT_X308);
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return __diag308(subcode, addr);
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}
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EXPORT_SYMBOL_GPL(diag308);
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/* SYSFS */
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#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \
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static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
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struct kobj_attribute *attr, \
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char *page) \
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{ \
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return scnprintf(page, PAGE_SIZE, _format, ##args); \
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}
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#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
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struct kobj_attribute *attr, \
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const char *buf, size_t len) \
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{ \
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unsigned long long ssid, devno; \
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\
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if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \
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return -EINVAL; \
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\
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if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \
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return -EINVAL; \
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\
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_ipl_blk.ssid = ssid; \
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_ipl_blk.devno = devno; \
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return len; \
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}
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#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \
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IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \
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_ipl_blk.ssid, _ipl_blk.devno); \
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IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
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__ATTR(_name, (S_IRUGO | S_IWUSR), \
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sys_##_prefix##_##_name##_show, \
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sys_##_prefix##_##_name##_store) \
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#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
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IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
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__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL)
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#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
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IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
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struct kobj_attribute *attr, \
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const char *buf, size_t len) \
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{ \
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unsigned long long value; \
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if (sscanf(buf, _fmt_in, &value) != 1) \
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return -EINVAL; \
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_value = value; \
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return len; \
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} \
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
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__ATTR(_name,(S_IRUGO | S_IWUSR), \
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sys_##_prefix##_##_name##_show, \
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sys_##_prefix##_##_name##_store)
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#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
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IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
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struct kobj_attribute *attr, \
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const char *buf, size_t len) \
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{ \
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strncpy(_value, buf, sizeof(_value) - 1); \
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strim(_value); \
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return len; \
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} \
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
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__ATTR(_name,(S_IRUGO | S_IWUSR), \
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sys_##_prefix##_##_name##_show, \
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sys_##_prefix##_##_name##_store)
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/*
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* ipl section
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*/
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static __init enum ipl_type get_ipl_type(void)
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{
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if (!ipl_block_valid)
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return IPL_TYPE_UNKNOWN;
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switch (ipl_block.pb0_hdr.pbt) {
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case IPL_PBT_CCW:
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return IPL_TYPE_CCW;
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case IPL_PBT_FCP:
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if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP)
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return IPL_TYPE_FCP_DUMP;
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else
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return IPL_TYPE_FCP;
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case IPL_PBT_NVME:
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if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP)
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return IPL_TYPE_NVME_DUMP;
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else
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return IPL_TYPE_NVME;
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}
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return IPL_TYPE_UNKNOWN;
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}
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struct ipl_info ipl_info;
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EXPORT_SYMBOL_GPL(ipl_info);
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static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr,
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char *page)
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{
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return sprintf(page, "%s\n", ipl_type_str(ipl_info.type));
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}
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static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
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static ssize_t ipl_secure_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *page)
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{
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return sprintf(page, "%i\n", !!ipl_secure_flag);
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}
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static struct kobj_attribute sys_ipl_secure_attr =
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__ATTR(secure, 0444, ipl_secure_show, NULL);
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static ssize_t ipl_has_secure_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *page)
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{
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return sprintf(page, "%i\n", !!sclp.has_sipl);
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}
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static struct kobj_attribute sys_ipl_has_secure_attr =
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__ATTR(has_secure, 0444, ipl_has_secure_show, NULL);
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static ssize_t ipl_vm_parm_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *page)
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{
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char parm[DIAG308_VMPARM_SIZE + 1] = {};
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if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW))
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ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block);
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return sprintf(page, "%s\n", parm);
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}
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static struct kobj_attribute sys_ipl_vm_parm_attr =
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__ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL);
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static ssize_t sys_ipl_device_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *page)
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{
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switch (ipl_info.type) {
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case IPL_TYPE_CCW:
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return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid,
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ipl_block.ccw.devno);
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case IPL_TYPE_FCP:
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case IPL_TYPE_FCP_DUMP:
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return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
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case IPL_TYPE_NVME:
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case IPL_TYPE_NVME_DUMP:
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return sprintf(page, "%08ux\n", ipl_block.nvme.fid);
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default:
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return 0;
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}
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}
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static struct kobj_attribute sys_ipl_device_attr =
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__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
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static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
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struct bin_attribute *attr, char *buf,
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loff_t off, size_t count)
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{
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return memory_read_from_buffer(buf, count, &off, &ipl_block,
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ipl_block.hdr.len);
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}
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static struct bin_attribute ipl_parameter_attr =
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__BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL,
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PAGE_SIZE);
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static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
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struct bin_attribute *attr, char *buf,
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loff_t off, size_t count)
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{
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unsigned int size = ipl_block.fcp.scp_data_len;
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void *scp_data = &ipl_block.fcp.scp_data;
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return memory_read_from_buffer(buf, count, &off, scp_data, size);
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}
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static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj,
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struct bin_attribute *attr, char *buf,
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loff_t off, size_t count)
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{
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unsigned int size = ipl_block.nvme.scp_data_len;
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void *scp_data = &ipl_block.nvme.scp_data;
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return memory_read_from_buffer(buf, count, &off, scp_data, size);
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}
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static struct bin_attribute ipl_scp_data_attr =
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__BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE);
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static struct bin_attribute ipl_nvme_scp_data_attr =
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__BIN_ATTR(scp_data, S_IRUGO, ipl_nvme_scp_data_read, NULL, PAGE_SIZE);
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static struct bin_attribute *ipl_fcp_bin_attrs[] = {
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&ipl_parameter_attr,
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&ipl_scp_data_attr,
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NULL,
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};
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static struct bin_attribute *ipl_nvme_bin_attrs[] = {
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&ipl_parameter_attr,
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&ipl_nvme_scp_data_attr,
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NULL,
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};
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/* FCP ipl device attributes */
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DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
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(unsigned long long)ipl_block.fcp.wwpn);
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DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n",
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(unsigned long long)ipl_block.fcp.lun);
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DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
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(unsigned long long)ipl_block.fcp.bootprog);
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DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
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(unsigned long long)ipl_block.fcp.br_lba);
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/* NVMe ipl device attributes */
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DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n",
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(unsigned long long)ipl_block.nvme.fid);
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DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n",
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(unsigned long long)ipl_block.nvme.nsid);
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DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n",
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(unsigned long long)ipl_block.nvme.bootprog);
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DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n",
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(unsigned long long)ipl_block.nvme.br_lba);
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static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *page)
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{
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char loadparm[LOADPARM_LEN + 1] = {};
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if (!sclp_ipl_info.is_valid)
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return sprintf(page, "#unknown#\n");
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memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
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EBCASC(loadparm, LOADPARM_LEN);
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strim(loadparm);
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return sprintf(page, "%s\n", loadparm);
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}
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static struct kobj_attribute sys_ipl_ccw_loadparm_attr =
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__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
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static struct attribute *ipl_fcp_attrs[] = {
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&sys_ipl_type_attr.attr,
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&sys_ipl_device_attr.attr,
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&sys_ipl_fcp_wwpn_attr.attr,
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&sys_ipl_fcp_lun_attr.attr,
|
|
&sys_ipl_fcp_bootprog_attr.attr,
|
|
&sys_ipl_fcp_br_lba_attr.attr,
|
|
&sys_ipl_ccw_loadparm_attr.attr,
|
|
&sys_ipl_secure_attr.attr,
|
|
&sys_ipl_has_secure_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group ipl_fcp_attr_group = {
|
|
.attrs = ipl_fcp_attrs,
|
|
.bin_attrs = ipl_fcp_bin_attrs,
|
|
};
|
|
|
|
static struct attribute *ipl_nvme_attrs[] = {
|
|
&sys_ipl_type_attr.attr,
|
|
&sys_ipl_nvme_fid_attr.attr,
|
|
&sys_ipl_nvme_nsid_attr.attr,
|
|
&sys_ipl_nvme_bootprog_attr.attr,
|
|
&sys_ipl_nvme_br_lba_attr.attr,
|
|
&sys_ipl_ccw_loadparm_attr.attr,
|
|
&sys_ipl_secure_attr.attr,
|
|
&sys_ipl_has_secure_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group ipl_nvme_attr_group = {
|
|
.attrs = ipl_nvme_attrs,
|
|
.bin_attrs = ipl_nvme_bin_attrs,
|
|
};
|
|
|
|
|
|
/* CCW ipl device attributes */
|
|
|
|
static struct attribute *ipl_ccw_attrs_vm[] = {
|
|
&sys_ipl_type_attr.attr,
|
|
&sys_ipl_device_attr.attr,
|
|
&sys_ipl_ccw_loadparm_attr.attr,
|
|
&sys_ipl_vm_parm_attr.attr,
|
|
&sys_ipl_secure_attr.attr,
|
|
&sys_ipl_has_secure_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute *ipl_ccw_attrs_lpar[] = {
|
|
&sys_ipl_type_attr.attr,
|
|
&sys_ipl_device_attr.attr,
|
|
&sys_ipl_ccw_loadparm_attr.attr,
|
|
&sys_ipl_secure_attr.attr,
|
|
&sys_ipl_has_secure_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group ipl_ccw_attr_group_vm = {
|
|
.attrs = ipl_ccw_attrs_vm,
|
|
};
|
|
|
|
static struct attribute_group ipl_ccw_attr_group_lpar = {
|
|
.attrs = ipl_ccw_attrs_lpar
|
|
};
|
|
|
|
/* 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 struct kset *ipl_kset;
|
|
|
|
static void __ipl_run(void *unused)
|
|
{
|
|
__bpon();
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
}
|
|
|
|
static void ipl_run(struct shutdown_trigger *trigger)
|
|
{
|
|
smp_call_ipl_cpu(__ipl_run, NULL);
|
|
}
|
|
|
|
static int __init ipl_init(void)
|
|
{
|
|
int rc;
|
|
|
|
ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj);
|
|
if (!ipl_kset) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
switch (ipl_info.type) {
|
|
case IPL_TYPE_CCW:
|
|
if (MACHINE_IS_VM)
|
|
rc = sysfs_create_group(&ipl_kset->kobj,
|
|
&ipl_ccw_attr_group_vm);
|
|
else
|
|
rc = sysfs_create_group(&ipl_kset->kobj,
|
|
&ipl_ccw_attr_group_lpar);
|
|
break;
|
|
case IPL_TYPE_FCP:
|
|
case IPL_TYPE_FCP_DUMP:
|
|
rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
|
|
break;
|
|
case IPL_TYPE_NVME:
|
|
case IPL_TYPE_NVME_DUMP:
|
|
rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nvme_attr_group);
|
|
break;
|
|
default:
|
|
rc = sysfs_create_group(&ipl_kset->kobj,
|
|
&ipl_unknown_attr_group);
|
|
break;
|
|
}
|
|
out:
|
|
if (rc)
|
|
panic("ipl_init failed: rc = %i\n", rc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct shutdown_action __refdata ipl_action = {
|
|
.name = SHUTDOWN_ACTION_IPL_STR,
|
|
.fn = ipl_run,
|
|
.init = ipl_init,
|
|
};
|
|
|
|
/*
|
|
* reipl shutdown action: Reboot Linux on shutdown.
|
|
*/
|
|
|
|
/* VM IPL PARM attributes */
|
|
static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb,
|
|
char *page)
|
|
{
|
|
char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
|
|
|
|
ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb);
|
|
return sprintf(page, "%s\n", vmparm);
|
|
}
|
|
|
|
static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
|
|
size_t vmparm_max,
|
|
const char *buf, size_t len)
|
|
{
|
|
int i, ip_len;
|
|
|
|
/* ignore trailing newline */
|
|
ip_len = len;
|
|
if ((len > 0) && (buf[len - 1] == '\n'))
|
|
ip_len--;
|
|
|
|
if (ip_len > vmparm_max)
|
|
return -EINVAL;
|
|
|
|
/* parm is used to store kernel options, check for common chars */
|
|
for (i = 0; i < ip_len; i++)
|
|
if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
|
|
return -EINVAL;
|
|
|
|
memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
|
|
ipb->ccw.vm_parm_len = ip_len;
|
|
if (ip_len > 0) {
|
|
ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
|
|
memcpy(ipb->ccw.vm_parm, buf, ip_len);
|
|
ASCEBC(ipb->ccw.vm_parm, ip_len);
|
|
} else {
|
|
ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/* NSS wrapper */
|
|
static ssize_t reipl_nss_vmparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_vmparm_show(reipl_block_nss, page);
|
|
}
|
|
|
|
static ssize_t reipl_nss_vmparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len);
|
|
}
|
|
|
|
/* CCW wrapper */
|
|
static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_vmparm_show(reipl_block_ccw, page);
|
|
}
|
|
|
|
static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_nss_vmparm_attr =
|
|
__ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show,
|
|
reipl_nss_vmparm_store);
|
|
static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
|
|
__ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show,
|
|
reipl_ccw_vmparm_store);
|
|
|
|
/* FCP reipl device attributes */
|
|
|
|
static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
size_t size = reipl_block_fcp->fcp.scp_data_len;
|
|
void *scp_data = reipl_block_fcp->fcp.scp_data;
|
|
|
|
return memory_read_from_buffer(buf, count, &off, scp_data, size);
|
|
}
|
|
|
|
static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
size_t scpdata_len = count;
|
|
size_t padding;
|
|
|
|
|
|
if (off)
|
|
return -EINVAL;
|
|
|
|
memcpy(reipl_block_fcp->fcp.scp_data, buf, count);
|
|
if (scpdata_len % 8) {
|
|
padding = 8 - (scpdata_len % 8);
|
|
memset(reipl_block_fcp->fcp.scp_data + scpdata_len,
|
|
0, padding);
|
|
scpdata_len += padding;
|
|
}
|
|
|
|
reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
|
|
reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len;
|
|
reipl_block_fcp->fcp.scp_data_len = scpdata_len;
|
|
|
|
return count;
|
|
}
|
|
static struct bin_attribute sys_reipl_fcp_scp_data_attr =
|
|
__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read,
|
|
reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE);
|
|
|
|
static struct bin_attribute *reipl_fcp_bin_attrs[] = {
|
|
&sys_reipl_fcp_scp_data_attr,
|
|
NULL,
|
|
};
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
|
|
reipl_block_fcp->fcp.wwpn);
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
|
|
reipl_block_fcp->fcp.lun);
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
|
|
reipl_block_fcp->fcp.bootprog);
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
|
|
reipl_block_fcp->fcp.br_lba);
|
|
DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
reipl_block_fcp->fcp.devno);
|
|
|
|
static void reipl_get_ascii_loadparm(char *loadparm,
|
|
struct ipl_parameter_block *ibp)
|
|
{
|
|
memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN);
|
|
EBCASC(loadparm, LOADPARM_LEN);
|
|
loadparm[LOADPARM_LEN] = 0;
|
|
strim(loadparm);
|
|
}
|
|
|
|
static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
|
|
char *page)
|
|
{
|
|
char buf[LOADPARM_LEN + 1];
|
|
|
|
reipl_get_ascii_loadparm(buf, ipb);
|
|
return sprintf(page, "%s\n", buf);
|
|
}
|
|
|
|
static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
|
|
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(ipb->common.loadparm, ' ', LOADPARM_LEN);
|
|
/* copy and convert to ebcdic */
|
|
memcpy(ipb->common.loadparm, buf, lp_len);
|
|
ASCEBC(ipb->common.loadparm, LOADPARM_LEN);
|
|
ipb->common.flags |= IPL_PB0_FLAG_LOADPARM;
|
|
return len;
|
|
}
|
|
|
|
/* FCP wrapper */
|
|
static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_loadparm_show(reipl_block_fcp, page);
|
|
}
|
|
|
|
static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_loadparm_store(reipl_block_fcp, buf, len);
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_fcp_loadparm_attr =
|
|
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show,
|
|
reipl_fcp_loadparm_store);
|
|
|
|
static ssize_t reipl_fcp_clear_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", reipl_fcp_clear);
|
|
}
|
|
|
|
static ssize_t reipl_fcp_clear_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
if (strtobool(buf, &reipl_fcp_clear) < 0)
|
|
return -EINVAL;
|
|
return len;
|
|
}
|
|
|
|
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,
|
|
&sys_reipl_fcp_loadparm_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group reipl_fcp_attr_group = {
|
|
.attrs = reipl_fcp_attrs,
|
|
.bin_attrs = reipl_fcp_bin_attrs,
|
|
};
|
|
|
|
static struct kobj_attribute sys_reipl_fcp_clear_attr =
|
|
__ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store);
|
|
|
|
/* NVME reipl device attributes */
|
|
|
|
static ssize_t reipl_nvme_scpdata_read(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
size_t size = reipl_block_nvme->nvme.scp_data_len;
|
|
void *scp_data = reipl_block_nvme->nvme.scp_data;
|
|
|
|
return memory_read_from_buffer(buf, count, &off, scp_data, size);
|
|
}
|
|
|
|
static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
size_t scpdata_len = count;
|
|
size_t padding;
|
|
|
|
if (off)
|
|
return -EINVAL;
|
|
|
|
memcpy(reipl_block_nvme->nvme.scp_data, buf, count);
|
|
if (scpdata_len % 8) {
|
|
padding = 8 - (scpdata_len % 8);
|
|
memset(reipl_block_nvme->nvme.scp_data + scpdata_len,
|
|
0, padding);
|
|
scpdata_len += padding;
|
|
}
|
|
|
|
reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
|
|
reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len;
|
|
reipl_block_nvme->nvme.scp_data_len = scpdata_len;
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct bin_attribute sys_reipl_nvme_scp_data_attr =
|
|
__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_nvme_scpdata_read,
|
|
reipl_nvme_scpdata_write, DIAG308_SCPDATA_SIZE);
|
|
|
|
static struct bin_attribute *reipl_nvme_bin_attrs[] = {
|
|
&sys_reipl_nvme_scp_data_attr,
|
|
NULL,
|
|
};
|
|
|
|
DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n",
|
|
reipl_block_nvme->nvme.fid);
|
|
DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n",
|
|
reipl_block_nvme->nvme.nsid);
|
|
DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
|
|
reipl_block_nvme->nvme.bootprog);
|
|
DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n",
|
|
reipl_block_nvme->nvme.br_lba);
|
|
|
|
/* nvme wrapper */
|
|
static ssize_t reipl_nvme_loadparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_loadparm_show(reipl_block_nvme, page);
|
|
}
|
|
|
|
static ssize_t reipl_nvme_loadparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_loadparm_store(reipl_block_nvme, buf, len);
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_nvme_loadparm_attr =
|
|
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nvme_loadparm_show,
|
|
reipl_nvme_loadparm_store);
|
|
|
|
static struct attribute *reipl_nvme_attrs[] = {
|
|
&sys_reipl_nvme_fid_attr.attr,
|
|
&sys_reipl_nvme_nsid_attr.attr,
|
|
&sys_reipl_nvme_bootprog_attr.attr,
|
|
&sys_reipl_nvme_br_lba_attr.attr,
|
|
&sys_reipl_nvme_loadparm_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group reipl_nvme_attr_group = {
|
|
.attrs = reipl_nvme_attrs,
|
|
.bin_attrs = reipl_nvme_bin_attrs
|
|
};
|
|
|
|
static ssize_t reipl_nvme_clear_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", reipl_nvme_clear);
|
|
}
|
|
|
|
static ssize_t reipl_nvme_clear_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
if (strtobool(buf, &reipl_nvme_clear) < 0)
|
|
return -EINVAL;
|
|
return len;
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_nvme_clear_attr =
|
|
__ATTR(clear, 0644, reipl_nvme_clear_show, reipl_nvme_clear_store);
|
|
|
|
/* CCW reipl device attributes */
|
|
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
|
|
|
|
/* NSS wrapper */
|
|
static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_loadparm_show(reipl_block_nss, page);
|
|
}
|
|
|
|
static ssize_t reipl_nss_loadparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_loadparm_store(reipl_block_nss, buf, len);
|
|
}
|
|
|
|
/* CCW wrapper */
|
|
static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return reipl_generic_loadparm_show(reipl_block_ccw, page);
|
|
}
|
|
|
|
static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
|
|
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
|
|
reipl_ccw_loadparm_store);
|
|
|
|
static ssize_t reipl_ccw_clear_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", reipl_ccw_clear);
|
|
}
|
|
|
|
static ssize_t reipl_ccw_clear_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
if (strtobool(buf, &reipl_ccw_clear) < 0)
|
|
return -EINVAL;
|
|
return len;
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_ccw_clear_attr =
|
|
__ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store);
|
|
|
|
static struct attribute *reipl_ccw_attrs_vm[] = {
|
|
&sys_reipl_ccw_device_attr.attr,
|
|
&sys_reipl_ccw_loadparm_attr.attr,
|
|
&sys_reipl_ccw_vmparm_attr.attr,
|
|
&sys_reipl_ccw_clear_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute *reipl_ccw_attrs_lpar[] = {
|
|
&sys_reipl_ccw_device_attr.attr,
|
|
&sys_reipl_ccw_loadparm_attr.attr,
|
|
&sys_reipl_ccw_clear_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group reipl_ccw_attr_group_vm = {
|
|
.name = IPL_CCW_STR,
|
|
.attrs = reipl_ccw_attrs_vm,
|
|
};
|
|
|
|
static struct attribute_group reipl_ccw_attr_group_lpar = {
|
|
.name = IPL_CCW_STR,
|
|
.attrs = reipl_ccw_attrs_lpar,
|
|
};
|
|
|
|
|
|
/* NSS reipl device attributes */
|
|
static void reipl_get_ascii_nss_name(char *dst,
|
|
struct ipl_parameter_block *ipb)
|
|
{
|
|
memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE);
|
|
EBCASC(dst, NSS_NAME_SIZE);
|
|
dst[NSS_NAME_SIZE] = 0;
|
|
}
|
|
|
|
static ssize_t reipl_nss_name_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
char nss_name[NSS_NAME_SIZE + 1] = {};
|
|
|
|
reipl_get_ascii_nss_name(nss_name, reipl_block_nss);
|
|
return sprintf(page, "%s\n", nss_name);
|
|
}
|
|
|
|
static ssize_t reipl_nss_name_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
int nss_len;
|
|
|
|
/* ignore trailing newline */
|
|
nss_len = len;
|
|
if ((len > 0) && (buf[len - 1] == '\n'))
|
|
nss_len--;
|
|
|
|
if (nss_len > NSS_NAME_SIZE)
|
|
return -EINVAL;
|
|
|
|
memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE);
|
|
if (nss_len > 0) {
|
|
reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS;
|
|
memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len);
|
|
ASCEBC(reipl_block_nss->ccw.nss_name, nss_len);
|
|
EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len);
|
|
} else {
|
|
reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static struct kobj_attribute sys_reipl_nss_name_attr =
|
|
__ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show,
|
|
reipl_nss_name_store);
|
|
|
|
static struct kobj_attribute sys_reipl_nss_loadparm_attr =
|
|
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show,
|
|
reipl_nss_loadparm_store);
|
|
|
|
static struct attribute *reipl_nss_attrs[] = {
|
|
&sys_reipl_nss_name_attr.attr,
|
|
&sys_reipl_nss_loadparm_attr.attr,
|
|
&sys_reipl_nss_vmparm_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group reipl_nss_attr_group = {
|
|
.name = IPL_NSS_STR,
|
|
.attrs = reipl_nss_attrs,
|
|
};
|
|
|
|
void set_os_info_reipl_block(void)
|
|
{
|
|
os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual,
|
|
reipl_block_actual->hdr.len);
|
|
}
|
|
|
|
/* reipl type */
|
|
|
|
static int reipl_set_type(enum ipl_type type)
|
|
{
|
|
if (!(reipl_capabilities & type))
|
|
return -EINVAL;
|
|
|
|
switch(type) {
|
|
case IPL_TYPE_CCW:
|
|
reipl_block_actual = reipl_block_ccw;
|
|
break;
|
|
case IPL_TYPE_FCP:
|
|
reipl_block_actual = reipl_block_fcp;
|
|
break;
|
|
case IPL_TYPE_NVME:
|
|
reipl_block_actual = reipl_block_nvme;
|
|
break;
|
|
case IPL_TYPE_NSS:
|
|
reipl_block_actual = reipl_block_nss;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
reipl_type = type;
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t reipl_type_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", ipl_type_str(reipl_type));
|
|
}
|
|
|
|
static ssize_t reipl_type_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
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);
|
|
else if (strncmp(buf, IPL_NVME_STR, strlen(IPL_NVME_STR)) == 0)
|
|
rc = reipl_set_type(IPL_TYPE_NVME);
|
|
else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0)
|
|
rc = reipl_set_type(IPL_TYPE_NSS);
|
|
return (rc != 0) ? rc : len;
|
|
}
|
|
|
|
static struct kobj_attribute reipl_type_attr =
|
|
__ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
|
|
|
|
static struct kset *reipl_kset;
|
|
static struct kset *reipl_fcp_kset;
|
|
static struct kset *reipl_nvme_kset;
|
|
|
|
static void __reipl_run(void *unused)
|
|
{
|
|
switch (reipl_type) {
|
|
case IPL_TYPE_CCW:
|
|
diag308(DIAG308_SET, reipl_block_ccw);
|
|
if (reipl_ccw_clear)
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
else
|
|
diag308(DIAG308_LOAD_NORMAL_DUMP, NULL);
|
|
break;
|
|
case IPL_TYPE_FCP:
|
|
diag308(DIAG308_SET, reipl_block_fcp);
|
|
if (reipl_fcp_clear)
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
else
|
|
diag308(DIAG308_LOAD_NORMAL, NULL);
|
|
break;
|
|
case IPL_TYPE_NVME:
|
|
diag308(DIAG308_SET, reipl_block_nvme);
|
|
if (reipl_nvme_clear)
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
else
|
|
diag308(DIAG308_LOAD_NORMAL, NULL);
|
|
break;
|
|
case IPL_TYPE_NSS:
|
|
diag308(DIAG308_SET, reipl_block_nss);
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
break;
|
|
case IPL_TYPE_UNKNOWN:
|
|
diag308(DIAG308_LOAD_CLEAR, NULL);
|
|
break;
|
|
case IPL_TYPE_FCP_DUMP:
|
|
case IPL_TYPE_NVME_DUMP:
|
|
break;
|
|
}
|
|
disabled_wait();
|
|
}
|
|
|
|
static void reipl_run(struct shutdown_trigger *trigger)
|
|
{
|
|
smp_call_ipl_cpu(__reipl_run, NULL);
|
|
}
|
|
|
|
static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
|
|
{
|
|
ipb->hdr.len = IPL_BP_CCW_LEN;
|
|
ipb->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
ipb->pb0_hdr.len = IPL_BP0_CCW_LEN;
|
|
ipb->pb0_hdr.pbt = IPL_PBT_CCW;
|
|
}
|
|
|
|
static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)
|
|
{
|
|
/* LOADPARM */
|
|
/* check if read scp info worked and set loadparm */
|
|
if (sclp_ipl_info.is_valid)
|
|
memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
|
|
else
|
|
/* read scp info failed: set empty loadparm (EBCDIC blanks) */
|
|
memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN);
|
|
ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM;
|
|
|
|
/* VM PARM */
|
|
if (MACHINE_IS_VM && ipl_block_valid &&
|
|
(ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) {
|
|
|
|
ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
|
|
ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len;
|
|
memcpy(ipb->ccw.vm_parm,
|
|
ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE);
|
|
}
|
|
}
|
|
|
|
static int __init reipl_nss_init(void)
|
|
{
|
|
int rc;
|
|
|
|
if (!MACHINE_IS_VM)
|
|
return 0;
|
|
|
|
reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!reipl_block_nss)
|
|
return -ENOMEM;
|
|
|
|
rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group);
|
|
if (rc)
|
|
return rc;
|
|
|
|
reipl_block_ccw_init(reipl_block_nss);
|
|
reipl_capabilities |= IPL_TYPE_NSS;
|
|
return 0;
|
|
}
|
|
|
|
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_kset->kobj,
|
|
MACHINE_IS_VM ? &reipl_ccw_attr_group_vm
|
|
: &reipl_ccw_attr_group_lpar);
|
|
if (rc)
|
|
return rc;
|
|
|
|
reipl_block_ccw_init(reipl_block_ccw);
|
|
if (ipl_info.type == IPL_TYPE_CCW) {
|
|
reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid;
|
|
reipl_block_ccw->ccw.devno = ipl_block.ccw.devno;
|
|
reipl_block_ccw_fill_parms(reipl_block_ccw);
|
|
}
|
|
|
|
reipl_capabilities |= IPL_TYPE_CCW;
|
|
return 0;
|
|
}
|
|
|
|
static int __init reipl_fcp_init(void)
|
|
{
|
|
int rc;
|
|
|
|
reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!reipl_block_fcp)
|
|
return -ENOMEM;
|
|
|
|
/* sysfs: create fcp kset for mixing attr group and bin attrs */
|
|
reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL,
|
|
&reipl_kset->kobj);
|
|
if (!reipl_fcp_kset) {
|
|
free_page((unsigned long) reipl_block_fcp);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
|
|
if (rc)
|
|
goto out1;
|
|
|
|
if (test_facility(141)) {
|
|
rc = sysfs_create_file(&reipl_fcp_kset->kobj,
|
|
&sys_reipl_fcp_clear_attr.attr);
|
|
if (rc)
|
|
goto out2;
|
|
} else {
|
|
reipl_fcp_clear = true;
|
|
}
|
|
|
|
if (ipl_info.type == IPL_TYPE_FCP) {
|
|
memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block));
|
|
/*
|
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM
|
|
* is invalid in the SCSI IPL parameter block, so take it
|
|
* always from sclp_ipl_info.
|
|
*/
|
|
memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm,
|
|
LOADPARM_LEN);
|
|
} else {
|
|
reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN;
|
|
reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
|
|
reipl_block_fcp->fcp.pbt = IPL_PBT_FCP;
|
|
reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL;
|
|
}
|
|
reipl_capabilities |= IPL_TYPE_FCP;
|
|
return 0;
|
|
|
|
out2:
|
|
sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
|
|
out1:
|
|
kset_unregister(reipl_fcp_kset);
|
|
free_page((unsigned long) reipl_block_fcp);
|
|
return rc;
|
|
}
|
|
|
|
static int __init reipl_nvme_init(void)
|
|
{
|
|
int rc;
|
|
|
|
reipl_block_nvme = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!reipl_block_nvme)
|
|
return -ENOMEM;
|
|
|
|
/* sysfs: create kset for mixing attr group and bin attrs */
|
|
reipl_nvme_kset = kset_create_and_add(IPL_NVME_STR, NULL,
|
|
&reipl_kset->kobj);
|
|
if (!reipl_nvme_kset) {
|
|
free_page((unsigned long) reipl_block_nvme);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc = sysfs_create_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group);
|
|
if (rc)
|
|
goto out1;
|
|
|
|
if (test_facility(141)) {
|
|
rc = sysfs_create_file(&reipl_nvme_kset->kobj,
|
|
&sys_reipl_nvme_clear_attr.attr);
|
|
if (rc)
|
|
goto out2;
|
|
} else {
|
|
reipl_nvme_clear = true;
|
|
}
|
|
|
|
if (ipl_info.type == IPL_TYPE_NVME) {
|
|
memcpy(reipl_block_nvme, &ipl_block, sizeof(ipl_block));
|
|
/*
|
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM
|
|
* is invalid in the IPL parameter block, so take it
|
|
* always from sclp_ipl_info.
|
|
*/
|
|
memcpy(reipl_block_nvme->nvme.loadparm, sclp_ipl_info.loadparm,
|
|
LOADPARM_LEN);
|
|
} else {
|
|
reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN;
|
|
reipl_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN;
|
|
reipl_block_nvme->nvme.pbt = IPL_PBT_NVME;
|
|
reipl_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_IPL;
|
|
}
|
|
reipl_capabilities |= IPL_TYPE_NVME;
|
|
return 0;
|
|
|
|
out2:
|
|
sysfs_remove_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group);
|
|
out1:
|
|
kset_unregister(reipl_nvme_kset);
|
|
free_page((unsigned long) reipl_block_nvme);
|
|
return rc;
|
|
}
|
|
|
|
static int __init reipl_type_init(void)
|
|
{
|
|
enum ipl_type reipl_type = ipl_info.type;
|
|
struct ipl_parameter_block *reipl_block;
|
|
unsigned long size;
|
|
|
|
reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size);
|
|
if (!reipl_block)
|
|
goto out;
|
|
/*
|
|
* If we have an OS info reipl block, this will be used
|
|
*/
|
|
if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) {
|
|
memcpy(reipl_block_fcp, reipl_block, size);
|
|
reipl_type = IPL_TYPE_FCP;
|
|
} else if (reipl_block->pb0_hdr.pbt == IPL_PBT_NVME) {
|
|
memcpy(reipl_block_nvme, reipl_block, size);
|
|
reipl_type = IPL_TYPE_NVME;
|
|
} else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) {
|
|
memcpy(reipl_block_ccw, reipl_block, size);
|
|
reipl_type = IPL_TYPE_CCW;
|
|
}
|
|
out:
|
|
return reipl_set_type(reipl_type);
|
|
}
|
|
|
|
static int __init reipl_init(void)
|
|
{
|
|
int rc;
|
|
|
|
reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj);
|
|
if (!reipl_kset)
|
|
return -ENOMEM;
|
|
rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr);
|
|
if (rc) {
|
|
kset_unregister(reipl_kset);
|
|
return rc;
|
|
}
|
|
rc = reipl_ccw_init();
|
|
if (rc)
|
|
return rc;
|
|
rc = reipl_fcp_init();
|
|
if (rc)
|
|
return rc;
|
|
rc = reipl_nvme_init();
|
|
if (rc)
|
|
return rc;
|
|
rc = reipl_nss_init();
|
|
if (rc)
|
|
return rc;
|
|
return reipl_type_init();
|
|
}
|
|
|
|
static struct shutdown_action __refdata reipl_action = {
|
|
.name = SHUTDOWN_ACTION_REIPL_STR,
|
|
.fn = reipl_run,
|
|
.init = reipl_init,
|
|
};
|
|
|
|
/*
|
|
* dump shutdown action: Dump Linux on shutdown.
|
|
*/
|
|
|
|
/* FCP dump device attributes */
|
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n",
|
|
dump_block_fcp->fcp.wwpn);
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n",
|
|
dump_block_fcp->fcp.lun);
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
|
|
dump_block_fcp->fcp.bootprog);
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
|
|
dump_block_fcp->fcp.br_lba);
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
|
|
dump_block_fcp->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,
|
|
};
|
|
|
|
/* NVME dump device attributes */
|
|
DEFINE_IPL_ATTR_RW(dump_nvme, fid, "0x%08llx\n", "%llx\n",
|
|
dump_block_nvme->nvme.fid);
|
|
DEFINE_IPL_ATTR_RW(dump_nvme, nsid, "0x%08llx\n", "%llx\n",
|
|
dump_block_nvme->nvme.nsid);
|
|
DEFINE_IPL_ATTR_RW(dump_nvme, bootprog, "%lld\n", "%llx\n",
|
|
dump_block_nvme->nvme.bootprog);
|
|
DEFINE_IPL_ATTR_RW(dump_nvme, br_lba, "%lld\n", "%llx\n",
|
|
dump_block_nvme->nvme.br_lba);
|
|
|
|
static struct attribute *dump_nvme_attrs[] = {
|
|
&sys_dump_nvme_fid_attr.attr,
|
|
&sys_dump_nvme_nsid_attr.attr,
|
|
&sys_dump_nvme_bootprog_attr.attr,
|
|
&sys_dump_nvme_br_lba_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group dump_nvme_attr_group = {
|
|
.name = IPL_NVME_STR,
|
|
.attrs = dump_nvme_attrs,
|
|
};
|
|
|
|
/* CCW dump device attributes */
|
|
DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw);
|
|
|
|
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 dump_type type)
|
|
{
|
|
if (!(dump_capabilities & type))
|
|
return -EINVAL;
|
|
dump_type = type;
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t dump_type_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", dump_type_str(dump_type));
|
|
}
|
|
|
|
static ssize_t dump_type_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
int rc = -EINVAL;
|
|
|
|
if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0)
|
|
rc = dump_set_type(DUMP_TYPE_NONE);
|
|
else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0)
|
|
rc = dump_set_type(DUMP_TYPE_CCW);
|
|
else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0)
|
|
rc = dump_set_type(DUMP_TYPE_FCP);
|
|
else if (strncmp(buf, DUMP_NVME_STR, strlen(DUMP_NVME_STR)) == 0)
|
|
rc = dump_set_type(DUMP_TYPE_NVME);
|
|
return (rc != 0) ? rc : len;
|
|
}
|
|
|
|
static struct kobj_attribute dump_type_attr =
|
|
__ATTR(dump_type, 0644, dump_type_show, dump_type_store);
|
|
|
|
static struct kset *dump_kset;
|
|
|
|
static void diag308_dump(void *dump_block)
|
|
{
|
|
diag308(DIAG308_SET, dump_block);
|
|
while (1) {
|
|
if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302)
|
|
break;
|
|
udelay(USEC_PER_SEC);
|
|
}
|
|
}
|
|
|
|
static void __dump_run(void *unused)
|
|
{
|
|
switch (dump_type) {
|
|
case DUMP_TYPE_CCW:
|
|
diag308_dump(dump_block_ccw);
|
|
break;
|
|
case DUMP_TYPE_FCP:
|
|
diag308_dump(dump_block_fcp);
|
|
break;
|
|
case DUMP_TYPE_NVME:
|
|
diag308_dump(dump_block_nvme);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void dump_run(struct shutdown_trigger *trigger)
|
|
{
|
|
if (dump_type == DUMP_TYPE_NONE)
|
|
return;
|
|
smp_send_stop();
|
|
smp_call_ipl_cpu(__dump_run, NULL);
|
|
}
|
|
|
|
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_kset->kobj, &dump_ccw_attr_group);
|
|
if (rc) {
|
|
free_page((unsigned long)dump_block_ccw);
|
|
return rc;
|
|
}
|
|
dump_block_ccw->hdr.len = IPL_BP_CCW_LEN;
|
|
dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN;
|
|
dump_block_ccw->ccw.pbt = IPL_PBT_CCW;
|
|
dump_capabilities |= DUMP_TYPE_CCW;
|
|
return 0;
|
|
}
|
|
|
|
static int __init dump_fcp_init(void)
|
|
{
|
|
int rc;
|
|
|
|
if (!sclp_ipl_info.has_dump)
|
|
return 0; /* LDIPL DUMP is not installed */
|
|
dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!dump_block_fcp)
|
|
return -ENOMEM;
|
|
rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group);
|
|
if (rc) {
|
|
free_page((unsigned long)dump_block_fcp);
|
|
return rc;
|
|
}
|
|
dump_block_fcp->hdr.len = IPL_BP_FCP_LEN;
|
|
dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN;
|
|
dump_block_fcp->fcp.pbt = IPL_PBT_FCP;
|
|
dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP;
|
|
dump_capabilities |= DUMP_TYPE_FCP;
|
|
return 0;
|
|
}
|
|
|
|
static int __init dump_nvme_init(void)
|
|
{
|
|
int rc;
|
|
|
|
if (!sclp_ipl_info.has_dump)
|
|
return 0; /* LDIPL DUMP is not installed */
|
|
dump_block_nvme = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!dump_block_nvme)
|
|
return -ENOMEM;
|
|
rc = sysfs_create_group(&dump_kset->kobj, &dump_nvme_attr_group);
|
|
if (rc) {
|
|
free_page((unsigned long)dump_block_nvme);
|
|
return rc;
|
|
}
|
|
dump_block_nvme->hdr.len = IPL_BP_NVME_LEN;
|
|
dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
|
|
dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN;
|
|
dump_block_nvme->fcp.pbt = IPL_PBT_NVME;
|
|
dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP;
|
|
dump_capabilities |= DUMP_TYPE_NVME;
|
|
return 0;
|
|
}
|
|
|
|
static int __init dump_init(void)
|
|
{
|
|
int rc;
|
|
|
|
dump_kset = kset_create_and_add("dump", NULL, firmware_kobj);
|
|
if (!dump_kset)
|
|
return -ENOMEM;
|
|
rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr);
|
|
if (rc) {
|
|
kset_unregister(dump_kset);
|
|
return rc;
|
|
}
|
|
rc = dump_ccw_init();
|
|
if (rc)
|
|
return rc;
|
|
rc = dump_fcp_init();
|
|
if (rc)
|
|
return rc;
|
|
rc = dump_nvme_init();
|
|
if (rc)
|
|
return rc;
|
|
dump_set_type(DUMP_TYPE_NONE);
|
|
return 0;
|
|
}
|
|
|
|
static struct shutdown_action __refdata dump_action = {
|
|
.name = SHUTDOWN_ACTION_DUMP_STR,
|
|
.fn = dump_run,
|
|
.init = dump_init,
|
|
};
|
|
|
|
static void dump_reipl_run(struct shutdown_trigger *trigger)
|
|
{
|
|
unsigned long ipib = (unsigned long) reipl_block_actual;
|
|
unsigned int csum;
|
|
|
|
csum = (__force unsigned int)
|
|
csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
|
|
put_abs_lowcore(ipib, ipib);
|
|
put_abs_lowcore(ipib_checksum, csum);
|
|
dump_run(trigger);
|
|
}
|
|
|
|
static struct shutdown_action __refdata dump_reipl_action = {
|
|
.name = SHUTDOWN_ACTION_DUMP_REIPL_STR,
|
|
.fn = dump_reipl_run,
|
|
};
|
|
|
|
/*
|
|
* vmcmd shutdown action: Trigger vm command on shutdown.
|
|
*/
|
|
|
|
static char vmcmd_on_reboot[128];
|
|
static char vmcmd_on_panic[128];
|
|
static char vmcmd_on_halt[128];
|
|
static char vmcmd_on_poff[128];
|
|
static char vmcmd_on_restart[128];
|
|
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot);
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic);
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt);
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff);
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart);
|
|
|
|
static struct attribute *vmcmd_attrs[] = {
|
|
&sys_vmcmd_on_reboot_attr.attr,
|
|
&sys_vmcmd_on_panic_attr.attr,
|
|
&sys_vmcmd_on_halt_attr.attr,
|
|
&sys_vmcmd_on_poff_attr.attr,
|
|
&sys_vmcmd_on_restart_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group vmcmd_attr_group = {
|
|
.attrs = vmcmd_attrs,
|
|
};
|
|
|
|
static struct kset *vmcmd_kset;
|
|
|
|
static void vmcmd_run(struct shutdown_trigger *trigger)
|
|
{
|
|
char *cmd;
|
|
|
|
if (strcmp(trigger->name, ON_REIPL_STR) == 0)
|
|
cmd = vmcmd_on_reboot;
|
|
else if (strcmp(trigger->name, ON_PANIC_STR) == 0)
|
|
cmd = vmcmd_on_panic;
|
|
else if (strcmp(trigger->name, ON_HALT_STR) == 0)
|
|
cmd = vmcmd_on_halt;
|
|
else if (strcmp(trigger->name, ON_POFF_STR) == 0)
|
|
cmd = vmcmd_on_poff;
|
|
else if (strcmp(trigger->name, ON_RESTART_STR) == 0)
|
|
cmd = vmcmd_on_restart;
|
|
else
|
|
return;
|
|
|
|
if (strlen(cmd) == 0)
|
|
return;
|
|
__cpcmd(cmd, NULL, 0, NULL);
|
|
}
|
|
|
|
static int vmcmd_init(void)
|
|
{
|
|
if (!MACHINE_IS_VM)
|
|
return -EOPNOTSUPP;
|
|
vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj);
|
|
if (!vmcmd_kset)
|
|
return -ENOMEM;
|
|
return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group);
|
|
}
|
|
|
|
static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR,
|
|
vmcmd_run, vmcmd_init};
|
|
|
|
/*
|
|
* stop shutdown action: Stop Linux on shutdown.
|
|
*/
|
|
|
|
static void stop_run(struct shutdown_trigger *trigger)
|
|
{
|
|
if (strcmp(trigger->name, ON_PANIC_STR) == 0 ||
|
|
strcmp(trigger->name, ON_RESTART_STR) == 0)
|
|
disabled_wait();
|
|
smp_stop_cpu();
|
|
}
|
|
|
|
static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR,
|
|
stop_run, NULL};
|
|
|
|
/* action list */
|
|
|
|
static struct shutdown_action *shutdown_actions_list[] = {
|
|
&ipl_action, &reipl_action, &dump_reipl_action, &dump_action,
|
|
&vmcmd_action, &stop_action};
|
|
#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *))
|
|
|
|
/*
|
|
* Trigger section
|
|
*/
|
|
|
|
static struct kset *shutdown_actions_kset;
|
|
|
|
static int set_trigger(const char *buf, struct shutdown_trigger *trigger,
|
|
size_t len)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
|
|
if (sysfs_streq(buf, shutdown_actions_list[i]->name)) {
|
|
if (shutdown_actions_list[i]->init_rc) {
|
|
return shutdown_actions_list[i]->init_rc;
|
|
} else {
|
|
trigger->action = shutdown_actions_list[i];
|
|
return len;
|
|
}
|
|
}
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* on reipl */
|
|
|
|
static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR,
|
|
&reipl_action};
|
|
|
|
static ssize_t on_reboot_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", on_reboot_trigger.action->name);
|
|
}
|
|
|
|
static ssize_t on_reboot_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return set_trigger(buf, &on_reboot_trigger, len);
|
|
}
|
|
static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot);
|
|
|
|
static void do_machine_restart(char *__unused)
|
|
{
|
|
smp_send_stop();
|
|
on_reboot_trigger.action->fn(&on_reboot_trigger);
|
|
reipl_run(NULL);
|
|
}
|
|
void (*_machine_restart)(char *command) = do_machine_restart;
|
|
|
|
/* on panic */
|
|
|
|
static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action};
|
|
|
|
static ssize_t on_panic_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", on_panic_trigger.action->name);
|
|
}
|
|
|
|
static ssize_t on_panic_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return set_trigger(buf, &on_panic_trigger, len);
|
|
}
|
|
static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic);
|
|
|
|
static void do_panic(void)
|
|
{
|
|
lgr_info_log();
|
|
on_panic_trigger.action->fn(&on_panic_trigger);
|
|
stop_run(&on_panic_trigger);
|
|
}
|
|
|
|
/* on restart */
|
|
|
|
static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR,
|
|
&stop_action};
|
|
|
|
static ssize_t on_restart_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", on_restart_trigger.action->name);
|
|
}
|
|
|
|
static ssize_t on_restart_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return set_trigger(buf, &on_restart_trigger, len);
|
|
}
|
|
static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart);
|
|
|
|
static void __do_restart(void *ignore)
|
|
{
|
|
smp_send_stop();
|
|
#ifdef CONFIG_CRASH_DUMP
|
|
crash_kexec(NULL);
|
|
#endif
|
|
on_restart_trigger.action->fn(&on_restart_trigger);
|
|
stop_run(&on_restart_trigger);
|
|
}
|
|
|
|
void do_restart(void *arg)
|
|
{
|
|
tracing_off();
|
|
debug_locks_off();
|
|
lgr_info_log();
|
|
smp_call_online_cpu(__do_restart, arg);
|
|
}
|
|
|
|
/* on halt */
|
|
|
|
static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action};
|
|
|
|
static ssize_t on_halt_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", on_halt_trigger.action->name);
|
|
}
|
|
|
|
static ssize_t on_halt_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return set_trigger(buf, &on_halt_trigger, len);
|
|
}
|
|
static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt);
|
|
|
|
static void do_machine_halt(void)
|
|
{
|
|
smp_send_stop();
|
|
on_halt_trigger.action->fn(&on_halt_trigger);
|
|
stop_run(&on_halt_trigger);
|
|
}
|
|
void (*_machine_halt)(void) = do_machine_halt;
|
|
|
|
/* on power off */
|
|
|
|
static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action};
|
|
|
|
static ssize_t on_poff_show(struct kobject *kobj,
|
|
struct kobj_attribute *attr, char *page)
|
|
{
|
|
return sprintf(page, "%s\n", on_poff_trigger.action->name);
|
|
}
|
|
|
|
static ssize_t on_poff_store(struct kobject *kobj,
|
|
struct kobj_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
return set_trigger(buf, &on_poff_trigger, len);
|
|
}
|
|
static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff);
|
|
|
|
static void do_machine_power_off(void)
|
|
{
|
|
smp_send_stop();
|
|
on_poff_trigger.action->fn(&on_poff_trigger);
|
|
stop_run(&on_poff_trigger);
|
|
}
|
|
void (*_machine_power_off)(void) = do_machine_power_off;
|
|
|
|
static struct attribute *shutdown_action_attrs[] = {
|
|
&on_restart_attr.attr,
|
|
&on_reboot_attr.attr,
|
|
&on_panic_attr.attr,
|
|
&on_halt_attr.attr,
|
|
&on_poff_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group shutdown_action_attr_group = {
|
|
.attrs = shutdown_action_attrs,
|
|
};
|
|
|
|
static void __init shutdown_triggers_init(void)
|
|
{
|
|
shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL,
|
|
firmware_kobj);
|
|
if (!shutdown_actions_kset)
|
|
goto fail;
|
|
if (sysfs_create_group(&shutdown_actions_kset->kobj,
|
|
&shutdown_action_attr_group))
|
|
goto fail;
|
|
return;
|
|
fail:
|
|
panic("shutdown_triggers_init failed\n");
|
|
}
|
|
|
|
static void __init shutdown_actions_init(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
|
|
if (!shutdown_actions_list[i]->init)
|
|
continue;
|
|
shutdown_actions_list[i]->init_rc =
|
|
shutdown_actions_list[i]->init();
|
|
}
|
|
}
|
|
|
|
static int __init s390_ipl_init(void)
|
|
{
|
|
char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40};
|
|
|
|
sclp_early_get_ipl_info(&sclp_ipl_info);
|
|
/*
|
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM
|
|
* returned by read SCP info is invalid (contains EBCDIC blanks)
|
|
* when the system has been booted via diag308. In that case we use
|
|
* the value from diag308, if available.
|
|
*
|
|
* There are also systems where diag308 store does not work in
|
|
* case the system is booted from HMC. Fortunately in this case
|
|
* READ SCP info provides the correct value.
|
|
*/
|
|
if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid)
|
|
memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN);
|
|
shutdown_actions_init();
|
|
shutdown_triggers_init();
|
|
return 0;
|
|
}
|
|
|
|
__initcall(s390_ipl_init);
|
|
|
|
static void __init strncpy_skip_quote(char *dst, char *src, int n)
|
|
{
|
|
int sx, dx;
|
|
|
|
dx = 0;
|
|
for (sx = 0; src[sx] != 0; sx++) {
|
|
if (src[sx] == '"')
|
|
continue;
|
|
dst[dx++] = src[sx];
|
|
if (dx >= n)
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int __init vmcmd_on_reboot_setup(char *str)
|
|
{
|
|
if (!MACHINE_IS_VM)
|
|
return 1;
|
|
strncpy_skip_quote(vmcmd_on_reboot, str, 127);
|
|
vmcmd_on_reboot[127] = 0;
|
|
on_reboot_trigger.action = &vmcmd_action;
|
|
return 1;
|
|
}
|
|
__setup("vmreboot=", vmcmd_on_reboot_setup);
|
|
|
|
static int __init vmcmd_on_panic_setup(char *str)
|
|
{
|
|
if (!MACHINE_IS_VM)
|
|
return 1;
|
|
strncpy_skip_quote(vmcmd_on_panic, str, 127);
|
|
vmcmd_on_panic[127] = 0;
|
|
on_panic_trigger.action = &vmcmd_action;
|
|
return 1;
|
|
}
|
|
__setup("vmpanic=", vmcmd_on_panic_setup);
|
|
|
|
static int __init vmcmd_on_halt_setup(char *str)
|
|
{
|
|
if (!MACHINE_IS_VM)
|
|
return 1;
|
|
strncpy_skip_quote(vmcmd_on_halt, str, 127);
|
|
vmcmd_on_halt[127] = 0;
|
|
on_halt_trigger.action = &vmcmd_action;
|
|
return 1;
|
|
}
|
|
__setup("vmhalt=", vmcmd_on_halt_setup);
|
|
|
|
static int __init vmcmd_on_poff_setup(char *str)
|
|
{
|
|
if (!MACHINE_IS_VM)
|
|
return 1;
|
|
strncpy_skip_quote(vmcmd_on_poff, str, 127);
|
|
vmcmd_on_poff[127] = 0;
|
|
on_poff_trigger.action = &vmcmd_action;
|
|
return 1;
|
|
}
|
|
__setup("vmpoff=", vmcmd_on_poff_setup);
|
|
|
|
static int on_panic_notify(struct notifier_block *self,
|
|
unsigned long event, void *data)
|
|
{
|
|
do_panic();
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static struct notifier_block on_panic_nb = {
|
|
.notifier_call = on_panic_notify,
|
|
.priority = INT_MIN,
|
|
};
|
|
|
|
void __init setup_ipl(void)
|
|
{
|
|
BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE);
|
|
|
|
ipl_info.type = get_ipl_type();
|
|
switch (ipl_info.type) {
|
|
case IPL_TYPE_CCW:
|
|
ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid;
|
|
ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno;
|
|
break;
|
|
case IPL_TYPE_FCP:
|
|
case IPL_TYPE_FCP_DUMP:
|
|
ipl_info.data.fcp.dev_id.ssid = 0;
|
|
ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno;
|
|
ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn;
|
|
ipl_info.data.fcp.lun = ipl_block.fcp.lun;
|
|
break;
|
|
case IPL_TYPE_NVME:
|
|
case IPL_TYPE_NVME_DUMP:
|
|
ipl_info.data.nvme.fid = ipl_block.nvme.fid;
|
|
ipl_info.data.nvme.nsid = ipl_block.nvme.nsid;
|
|
break;
|
|
case IPL_TYPE_NSS:
|
|
case IPL_TYPE_UNKNOWN:
|
|
/* We have no info to copy */
|
|
break;
|
|
}
|
|
atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
|
|
}
|
|
|
|
void s390_reset_system(void)
|
|
{
|
|
/* Disable prefixing */
|
|
set_prefix(0);
|
|
|
|
/* Disable lowcore protection */
|
|
__ctl_clear_bit(0, 28);
|
|
diag_amode31_ops.diag308_reset();
|
|
}
|
|
|
|
#ifdef CONFIG_KEXEC_FILE
|
|
|
|
int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
|
|
unsigned char flags, unsigned short cert)
|
|
{
|
|
struct ipl_report_component *comp;
|
|
|
|
comp = vzalloc(sizeof(*comp));
|
|
if (!comp)
|
|
return -ENOMEM;
|
|
list_add_tail(&comp->list, &report->components);
|
|
|
|
comp->entry.addr = kbuf->mem;
|
|
comp->entry.len = kbuf->memsz;
|
|
comp->entry.flags = flags;
|
|
comp->entry.certificate_index = cert;
|
|
|
|
report->size += sizeof(comp->entry);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ipl_report_add_certificate(struct ipl_report *report, void *key,
|
|
unsigned long addr, unsigned long len)
|
|
{
|
|
struct ipl_report_certificate *cert;
|
|
|
|
cert = vzalloc(sizeof(*cert));
|
|
if (!cert)
|
|
return -ENOMEM;
|
|
list_add_tail(&cert->list, &report->certificates);
|
|
|
|
cert->entry.addr = addr;
|
|
cert->entry.len = len;
|
|
cert->key = key;
|
|
|
|
report->size += sizeof(cert->entry);
|
|
report->size += cert->entry.len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib)
|
|
{
|
|
struct ipl_report *report;
|
|
|
|
report = vzalloc(sizeof(*report));
|
|
if (!report)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
report->ipib = ipib;
|
|
INIT_LIST_HEAD(&report->components);
|
|
INIT_LIST_HEAD(&report->certificates);
|
|
|
|
report->size = ALIGN(ipib->hdr.len, 8);
|
|
report->size += sizeof(struct ipl_rl_hdr);
|
|
report->size += sizeof(struct ipl_rb_components);
|
|
report->size += sizeof(struct ipl_rb_certificates);
|
|
|
|
return report;
|
|
}
|
|
|
|
void *ipl_report_finish(struct ipl_report *report)
|
|
{
|
|
struct ipl_report_certificate *cert;
|
|
struct ipl_report_component *comp;
|
|
struct ipl_rb_certificates *certs;
|
|
struct ipl_parameter_block *ipib;
|
|
struct ipl_rb_components *comps;
|
|
struct ipl_rl_hdr *rl_hdr;
|
|
void *buf, *ptr;
|
|
|
|
buf = vzalloc(report->size);
|
|
if (!buf)
|
|
goto out;
|
|
ptr = buf;
|
|
|
|
memcpy(ptr, report->ipib, report->ipib->hdr.len);
|
|
ipib = ptr;
|
|
if (ipl_secure_flag)
|
|
ipib->hdr.flags |= IPL_PL_FLAG_SIPL;
|
|
ipib->hdr.flags |= IPL_PL_FLAG_IPLSR;
|
|
ptr += report->ipib->hdr.len;
|
|
ptr = PTR_ALIGN(ptr, 8);
|
|
|
|
rl_hdr = ptr;
|
|
ptr += sizeof(*rl_hdr);
|
|
|
|
comps = ptr;
|
|
comps->rbt = IPL_RBT_COMPONENTS;
|
|
ptr += sizeof(*comps);
|
|
list_for_each_entry(comp, &report->components, list) {
|
|
memcpy(ptr, &comp->entry, sizeof(comp->entry));
|
|
ptr += sizeof(comp->entry);
|
|
}
|
|
comps->len = ptr - (void *)comps;
|
|
|
|
certs = ptr;
|
|
certs->rbt = IPL_RBT_CERTIFICATES;
|
|
ptr += sizeof(*certs);
|
|
list_for_each_entry(cert, &report->certificates, list) {
|
|
memcpy(ptr, &cert->entry, sizeof(cert->entry));
|
|
ptr += sizeof(cert->entry);
|
|
}
|
|
certs->len = ptr - (void *)certs;
|
|
rl_hdr->len = ptr - (void *)rl_hdr;
|
|
|
|
list_for_each_entry(cert, &report->certificates, list) {
|
|
memcpy(ptr, cert->key, cert->entry.len);
|
|
ptr += cert->entry.len;
|
|
}
|
|
|
|
BUG_ON(ptr > buf + report->size);
|
|
out:
|
|
return buf;
|
|
}
|
|
|
|
int ipl_report_free(struct ipl_report *report)
|
|
{
|
|
struct ipl_report_component *comp, *ncomp;
|
|
struct ipl_report_certificate *cert, *ncert;
|
|
|
|
list_for_each_entry_safe(comp, ncomp, &report->components, list)
|
|
vfree(comp);
|
|
|
|
list_for_each_entry_safe(cert, ncert, &report->certificates, list)
|
|
vfree(cert);
|
|
|
|
vfree(report);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|