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