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