| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Holzheu | 4411 | 44.39% | 22 | 24.72% |
| Hendrik Brueckner | 1607 | 16.17% | 3 | 3.37% |
| Jason J. Herne | 1484 | 14.94% | 3 | 3.37% |
| Martin Schwidefsky | 952 | 9.58% | 8 | 8.99% |
| Gerald Schaefer | 452 | 4.55% | 3 | 3.37% |
| Vasily Gorbik | 327 | 3.29% | 12 | 13.48% |
| Sebastian Ott | 186 | 1.87% | 5 | 5.62% |
| Heiko Carstens | 171 | 1.72% | 16 | 17.98% |
| Hongjie Yang | 98 | 0.99% | 1 | 1.12% |
| Frank Munzert | 88 | 0.89% | 3 | 3.37% |
| Philipp Rudo | 65 | 0.65% | 1 | 1.12% |
| Greg Kroah-Hartman | 43 | 0.43% | 4 | 4.49% |
| Chris Wright | 20 | 0.20% | 1 | 1.12% |
| Akinobu Mita | 15 | 0.15% | 1 | 1.12% |
| Al Viro | 5 | 0.05% | 1 | 1.12% |
| Paul Gortmaker | 4 | 0.04% | 1 | 1.12% |
| Alexander Gordeev | 3 | 0.03% | 1 | 1.12% |
| Tejun Heo | 3 | 0.03% | 1 | 1.12% |
| Chen Zhou | 1 | 0.01% | 1 | 1.12% |
| Julia Lawall | 1 | 0.01% | 1 | 1.12% |
| Total | 9936 | 89 |
// SPDX-License-Identifier: GPL-2.0 /* * ipl/reipl/dump support for Linux on s390. * * Copyright IBM Corp. 2005, 2012 * 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/export.h> #include <linux/init.h> #include <linux/device.h> #include <linux/delay.h> #include <linux/reboot.h> #include <linux/ctype.h> #include <linux/fs.h> #include <linux/gfp.h> #include <linux/crash_dump.h> #include <linux/debug_locks.h> #include <asm/diag.h> #include <asm/ipl.h> #include <asm/smp.h> #include <asm/setup.h> #include <asm/cpcmd.h> #include <asm/ebcdic.h> #include <asm/sclp.h> #include <asm/checksum.h> #include <asm/debug.h> #include <asm/os_info.h> #include <asm/sections.h> #include <asm/boot_data.h> #include "entry.h" #define IPL_PARM_BLOCK_VERSION 0 #define IPL_UNKNOWN_STR "unknown" #define IPL_CCW_STR "ccw" #define IPL_FCP_STR "fcp" #define IPL_FCP_DUMP_STR "fcp_dump" #define IPL_NVME_STR "nvme" #define IPL_NVME_DUMP_STR "nvme_dump" #define IPL_NSS_STR "nss" #define DUMP_CCW_STR "ccw" #define DUMP_FCP_STR "fcp" #define DUMP_NVME_STR "nvme" #define DUMP_NONE_STR "none" /* * Four shutdown trigger types are supported: * - panic * - halt * - power off * - reipl * - restart */ #define ON_PANIC_STR "on_panic" #define ON_HALT_STR "on_halt" #define ON_POFF_STR "on_poff" #define ON_REIPL_STR "on_reboot" #define ON_RESTART_STR "on_restart" struct shutdown_action; struct shutdown_trigger { char *name; struct shutdown_action *action; }; /* * The following shutdown action types are supported: */ #define SHUTDOWN_ACTION_IPL_STR "ipl" #define SHUTDOWN_ACTION_REIPL_STR "reipl" #define SHUTDOWN_ACTION_DUMP_STR "dump" #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" #define SHUTDOWN_ACTION_STOP_STR "stop" #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" struct shutdown_action { char *name; void (*fn) (struct shutdown_trigger *trigger); int (*init) (void); int init_rc; }; static char *ipl_type_str(enum ipl_type type) { switch (type) { case IPL_TYPE_CCW: return IPL_CCW_STR; case IPL_TYPE_FCP: return IPL_FCP_STR; case IPL_TYPE_FCP_DUMP: return IPL_FCP_DUMP_STR; case IPL_TYPE_NSS: return IPL_NSS_STR; case IPL_TYPE_NVME: return IPL_NVME_STR; case IPL_TYPE_NVME_DUMP: return IPL_NVME_DUMP_STR; case IPL_TYPE_UNKNOWN: default: return IPL_UNKNOWN_STR; } } enum dump_type { DUMP_TYPE_NONE = 1, DUMP_TYPE_CCW = 2, DUMP_TYPE_FCP = 4, DUMP_TYPE_NVME = 8, }; static char *dump_type_str(enum dump_type type) { switch (type) { case DUMP_TYPE_NONE: return DUMP_NONE_STR; case DUMP_TYPE_CCW: return DUMP_CCW_STR; case DUMP_TYPE_FCP: return DUMP_FCP_STR; case DUMP_TYPE_NVME: return DUMP_NVME_STR; default: return NULL; } } int __bootdata_preserved(ipl_block_valid); struct ipl_parameter_block __bootdata_preserved(ipl_block); int __bootdata_preserved(ipl_secure_flag); unsigned long __bootdata_preserved(ipl_cert_list_addr); unsigned long __bootdata_preserved(ipl_cert_list_size); unsigned long __bootdata(early_ipl_comp_list_addr); unsigned long __bootdata(early_ipl_comp_list_size); static int reipl_capabilities = IPL_TYPE_UNKNOWN; static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; static struct ipl_parameter_block *reipl_block_fcp; static struct ipl_parameter_block *reipl_block_nvme; static struct ipl_parameter_block *reipl_block_ccw; static struct ipl_parameter_block *reipl_block_nss; static struct ipl_parameter_block *reipl_block_actual; static int dump_capabilities = DUMP_TYPE_NONE; static enum dump_type dump_type = DUMP_TYPE_NONE; static struct ipl_parameter_block *dump_block_fcp; static struct ipl_parameter_block *dump_block_nvme; static struct ipl_parameter_block *dump_block_ccw; static struct sclp_ipl_info sclp_ipl_info; static bool reipl_nvme_clear; static bool reipl_fcp_clear; static bool reipl_ccw_clear; static inline 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: nopr %%r7\n" EX_TABLE(0b,0b) : "+d" (_addr), "+d" (_rc) : "d" (subcode) : "cc", "memory"); return _rc; } int diag308(unsigned long subcode, void *addr) { if (IS_ENABLED(CONFIG_KASAN)) __arch_local_irq_stosm(0x04); /* enable DAT */ diag_stat_inc(DIAG_STAT_X308); return __diag308(subcode, addr); } EXPORT_SYMBOL_GPL(diag308); /* SYSFS */ #define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ struct kobj_attribute *attr, \ char *page) \ { \ return scnprintf(page, PAGE_SIZE, _format, ##args); \ } #define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ struct kobj_attribute *attr, \ const char *buf, size_t len) \ { \ unsigned long long ssid, devno; \ \ if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ return -EINVAL; \ \ if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ return -EINVAL; \ \ _ipl_blk.ssid = ssid; \ _ipl_blk.devno = devno; \ return len; \ } #define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ _ipl_blk.ssid, _ipl_blk.devno); \ IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ __ATTR(_name, (S_IRUGO | S_IWUSR), \ sys_##_prefix##_##_name##_show, \ sys_##_prefix##_##_name##_store) \ #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ static struct kobj_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) \ IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ struct kobj_attribute *attr, \ 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 kobj_attribute sys_##_prefix##_##_name##_attr = \ __ATTR(_name,(S_IRUGO | S_IWUSR), \ sys_##_prefix##_##_name##_show, \ sys_##_prefix##_##_name##_store) #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ struct kobj_attribute *attr, \ const char *buf, size_t len) \ { \ strncpy(_value, buf, sizeof(_value) - 1); \ strim(_value); \ return len; \ } \ static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ __ATTR(_name,(S_IRUGO | S_IWUSR), \ sys_##_prefix##_##_name##_show, \ sys_##_prefix##_##_name##_store) /* * ipl section */ static __init enum ipl_type get_ipl_type(void) { if (!ipl_block_valid) return IPL_TYPE_UNKNOWN; switch (ipl_block.pb0_hdr.pbt) { case IPL_PBT_CCW: return IPL_TYPE_CCW; case IPL_PBT_FCP: if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) return IPL_TYPE_FCP_DUMP; else return IPL_TYPE_FCP; case IPL_PBT_NVME: if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP) return IPL_TYPE_NVME_DUMP; else return IPL_TYPE_NVME; } return IPL_TYPE_UNKNOWN; } struct ipl_info ipl_info; EXPORT_SYMBOL_GPL(ipl_info); static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); } static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); static ssize_t ipl_secure_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { return sprintf(page, "%i\n", !!ipl_secure_flag); } static struct kobj_attribute sys_ipl_secure_attr = __ATTR(secure, 0444, ipl_secure_show, NULL); static ssize_t ipl_has_secure_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { return sprintf(page, "%i\n", !!sclp.has_sipl); } static struct kobj_attribute sys_ipl_has_secure_attr = __ATTR(has_secure, 0444, ipl_has_secure_show, NULL); static ssize_t ipl_vm_parm_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { char parm[DIAG308_VMPARM_SIZE + 1] = {}; if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW)) ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block); return sprintf(page, "%s\n", parm); } static struct kobj_attribute sys_ipl_vm_parm_attr = __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); static ssize_t sys_ipl_device_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { switch (ipl_info.type) { case IPL_TYPE_CCW: return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid, ipl_block.ccw.devno); case IPL_TYPE_FCP: case IPL_TYPE_FCP_DUMP: return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno); case IPL_TYPE_NVME: case IPL_TYPE_NVME_DUMP: return sprintf(page, "%08ux\n", ipl_block.nvme.fid); default: return 0; } } static struct kobj_attribute sys_ipl_device_attr = __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { return memory_read_from_buffer(buf, count, &off, &ipl_block, ipl_block.hdr.len); } static struct bin_attribute ipl_parameter_attr = __BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL, PAGE_SIZE); static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { unsigned int size = ipl_block.fcp.scp_data_len; void *scp_data = &ipl_block.fcp.scp_data; return memory_read_from_buffer(buf, count, &off, scp_data, size); } static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { unsigned int size = ipl_block.nvme.scp_data_len; void *scp_data = &ipl_block.nvme.scp_data; return memory_read_from_buffer(buf, count, &off, scp_data, size); } static struct bin_attribute ipl_scp_data_attr = __BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE); static struct bin_attribute ipl_nvme_scp_data_attr = __BIN_ATTR(scp_data, S_IRUGO, ipl_nvme_scp_data_read, NULL, PAGE_SIZE); static struct bin_attribute *ipl_fcp_bin_attrs[] = { &ipl_parameter_attr, &ipl_scp_data_attr, NULL, }; static struct bin_attribute *ipl_nvme_bin_attrs[] = { &ipl_parameter_attr, &ipl_nvme_scp_data_attr, NULL, }; /* FCP ipl device attributes */ DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long)ipl_block.fcp.wwpn); DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long)ipl_block.fcp.lun); DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long)ipl_block.fcp.bootprog); DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long)ipl_block.fcp.br_lba); /* NVMe ipl device attributes */ DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n", (unsigned long long)ipl_block.nvme.fid); DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n", (unsigned long long)ipl_block.nvme.nsid); DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n", (unsigned long long)ipl_block.nvme.bootprog); DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n", (unsigned long long)ipl_block.nvme.br_lba); static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { char loadparm[LOADPARM_LEN + 1] = {}; if (!sclp_ipl_info.is_valid) return sprintf(page, "#unknown#\n"); memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); EBCASC(loadparm, LOADPARM_LEN); strim(loadparm); return sprintf(page, "%s\n", loadparm); } static struct kobj_attribute sys_ipl_ccw_loadparm_attr = __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); 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, &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); mem_assign_absolute(S390_lowcore.ipib, ipib); mem_assign_absolute(S390_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) { __arch_local_irq_stosm(0x04); /* enable DAT */ 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_dma_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) return ERR_PTR(-ENOMEM); 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); 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
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