1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * s390 (re)ipl support 4 * 5 * Copyright IBM Corp. 2007 6 */ 7 8 #ifndef _ASM_S390_IPL_H 9 #define _ASM_S390_IPL_H 10 11 #include <asm/lowcore.h> 12 #include <asm/types.h> 13 #include <asm/cio.h> 14 #include <asm/setup.h> 15 #include <asm/page.h> 16 #include <uapi/asm/ipl.h> 17 18 struct ipl_parameter_block { 19 struct ipl_pl_hdr hdr; 20 union { 21 struct ipl_pb_hdr pb0_hdr; 22 struct ipl_pb0_common common; 23 struct ipl_pb0_fcp fcp; 24 struct ipl_pb0_ccw ccw; 25 struct ipl_pb0_eckd eckd; 26 struct ipl_pb0_nvme nvme; 27 char raw[PAGE_SIZE - sizeof(struct ipl_pl_hdr)]; 28 }; 29 } __packed __aligned(PAGE_SIZE); 30 31 #define NSS_NAME_SIZE 8 32 33 #define IPL_BP_FCP_LEN (sizeof(struct ipl_pl_hdr) + \ 34 sizeof(struct ipl_pb0_fcp)) 35 #define IPL_BP0_FCP_LEN (sizeof(struct ipl_pb0_fcp)) 36 37 #define IPL_BP_NVME_LEN (sizeof(struct ipl_pl_hdr) + \ 38 sizeof(struct ipl_pb0_nvme)) 39 #define IPL_BP0_NVME_LEN (sizeof(struct ipl_pb0_nvme)) 40 41 #define IPL_BP_CCW_LEN (sizeof(struct ipl_pl_hdr) + \ 42 sizeof(struct ipl_pb0_ccw)) 43 #define IPL_BP0_CCW_LEN (sizeof(struct ipl_pb0_ccw)) 44 45 #define IPL_BP_ECKD_LEN (sizeof(struct ipl_pl_hdr) + \ 46 sizeof(struct ipl_pb0_eckd)) 47 #define IPL_BP0_ECKD_LEN (sizeof(struct ipl_pb0_eckd)) 48 49 #define IPL_MAX_SUPPORTED_VERSION (0) 50 51 #define IPL_RB_CERT_UNKNOWN ((unsigned short)-1) 52 53 #define DIAG308_VMPARM_SIZE (64) 54 #define DIAG308_SCPDATA_OFFSET offsetof(struct ipl_parameter_block, \ 55 fcp.scp_data) 56 #define DIAG308_SCPDATA_SIZE (PAGE_SIZE - DIAG308_SCPDATA_OFFSET) 57 58 struct save_area; 59 struct save_area * __init save_area_alloc(bool is_boot_cpu); 60 struct save_area * __init save_area_boot_cpu(void); 61 void __init save_area_add_regs(struct save_area *, void *regs); 62 void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs); 63 64 extern void s390_reset_system(void); 65 extern size_t ipl_block_get_ascii_vmparm(char *dest, size_t size, 66 const struct ipl_parameter_block *ipb); 67 68 enum ipl_type { 69 IPL_TYPE_UNKNOWN = 1, 70 IPL_TYPE_CCW = 2, 71 IPL_TYPE_FCP = 4, 72 IPL_TYPE_FCP_DUMP = 8, 73 IPL_TYPE_NSS = 16, 74 IPL_TYPE_NVME = 32, 75 IPL_TYPE_NVME_DUMP = 64, 76 IPL_TYPE_ECKD = 128, 77 IPL_TYPE_ECKD_DUMP = 256, 78 }; 79 80 struct ipl_info 81 { 82 enum ipl_type type; 83 union { 84 struct { 85 struct ccw_dev_id dev_id; 86 } ccw; 87 struct { 88 struct ccw_dev_id dev_id; 89 } eckd; 90 struct { 91 struct ccw_dev_id dev_id; 92 u64 wwpn; 93 u64 lun; 94 } fcp; 95 struct { 96 u32 fid; 97 u32 nsid; 98 } nvme; 99 struct { 100 char name[NSS_NAME_SIZE + 1]; 101 } nss; 102 } data; 103 }; 104 105 extern struct ipl_info ipl_info; 106 extern void setup_ipl(void); 107 extern void set_os_info_reipl_block(void); 108 is_ipl_type_dump(void)109 static inline bool is_ipl_type_dump(void) 110 { 111 return (ipl_info.type == IPL_TYPE_FCP_DUMP) || 112 (ipl_info.type == IPL_TYPE_ECKD_DUMP) || 113 (ipl_info.type == IPL_TYPE_NVME_DUMP); 114 } 115 116 struct ipl_report { 117 struct ipl_parameter_block *ipib; 118 struct list_head components; 119 struct list_head certificates; 120 size_t size; 121 }; 122 123 struct ipl_report_component { 124 struct list_head list; 125 struct ipl_rb_component_entry entry; 126 }; 127 128 struct ipl_report_certificate { 129 struct list_head list; 130 struct ipl_rb_certificate_entry entry; 131 void *key; 132 }; 133 134 struct kexec_buf; 135 struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib); 136 void *ipl_report_finish(struct ipl_report *report); 137 int ipl_report_free(struct ipl_report *report); 138 int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, 139 unsigned char flags, unsigned short cert); 140 int ipl_report_add_certificate(struct ipl_report *report, void *key, 141 unsigned long addr, unsigned long len); 142 143 /* 144 * DIAG 308 support 145 */ 146 enum diag308_subcode { 147 DIAG308_CLEAR_RESET = 0, 148 DIAG308_LOAD_NORMAL_RESET = 1, 149 DIAG308_REL_HSA = 2, 150 DIAG308_LOAD_CLEAR = 3, 151 DIAG308_LOAD_NORMAL_DUMP = 4, 152 DIAG308_SET = 5, 153 DIAG308_STORE = 6, 154 DIAG308_LOAD_NORMAL = 7, 155 }; 156 157 enum diag308_subcode_flags { 158 DIAG308_FLAG_EI = 1UL << 16, 159 }; 160 161 enum diag308_rc { 162 DIAG308_RC_OK = 0x0001, 163 DIAG308_RC_NOCONFIG = 0x0102, 164 }; 165 166 extern int diag308(unsigned long subcode, void *addr); 167 extern void store_status(void (*fn)(void *), void *data); 168 extern void lgr_info_log(void); 169 170 #endif /* _ASM_S390_IPL_H */ 171