1 /* 2 * s390 (re)ipl support 3 * 4 * Copyright IBM Corp. 2007 5 */ 6 7 #ifndef _ASM_S390_IPL_H 8 #define _ASM_S390_IPL_H 9 10 #include <asm/lowcore.h> 11 #include <asm/types.h> 12 #include <asm/cio.h> 13 #include <asm/setup.h> 14 15 #define IPL_PARMBLOCK_ORIGIN 0x2000 16 17 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \ 18 sizeof(struct ipl_block_fcp)) 19 20 #define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16) 21 22 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \ 23 sizeof(struct ipl_block_ccw)) 24 25 #define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16) 26 27 #define IPL_MAX_SUPPORTED_VERSION (0) 28 29 #define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \ 30 IPL_PARMBLOCK_ORIGIN) 31 #define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len) 32 33 struct ipl_list_hdr { 34 u32 len; 35 u8 reserved1[3]; 36 u8 version; 37 u32 blk0_len; 38 u8 pbt; 39 u8 flags; 40 u16 reserved2; 41 u8 loadparm[8]; 42 } __attribute__((packed)); 43 44 struct ipl_block_fcp { 45 u8 reserved1[305-1]; 46 u8 opt; 47 u8 reserved2[3]; 48 u16 reserved3; 49 u16 devno; 50 u8 reserved4[4]; 51 u64 wwpn; 52 u64 lun; 53 u32 bootprog; 54 u8 reserved5[12]; 55 u64 br_lba; 56 u32 scp_data_len; 57 u8 reserved6[260]; 58 u8 scp_data[]; 59 } __attribute__((packed)); 60 61 #define DIAG308_VMPARM_SIZE 64 62 #define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \ 63 offsetof(struct ipl_block_fcp, scp_data))) 64 65 struct ipl_block_ccw { 66 u8 reserved1[84]; 67 u8 reserved2[2]; 68 u16 devno; 69 u8 vm_flags; 70 u8 reserved3[3]; 71 u32 vm_parm_len; 72 u8 nss_name[8]; 73 u8 vm_parm[DIAG308_VMPARM_SIZE]; 74 u8 reserved4[8]; 75 } __attribute__((packed)); 76 77 struct ipl_parameter_block { 78 struct ipl_list_hdr hdr; 79 union { 80 struct ipl_block_fcp fcp; 81 struct ipl_block_ccw ccw; 82 } ipl_info; 83 } __attribute__((packed,aligned(4096))); 84 85 /* 86 * IPL validity flags 87 */ 88 extern u32 ipl_flags; 89 extern u32 dump_prefix_page; 90 91 struct dump_save_areas { 92 struct save_area_ext **areas; 93 int count; 94 }; 95 96 extern struct dump_save_areas dump_save_areas; 97 98 extern void do_reipl(void); 99 extern void do_halt(void); 100 extern void do_poff(void); 101 extern void ipl_save_parameters(void); 102 extern void ipl_update_parameters(void); 103 extern size_t append_ipl_vmparm(char *, size_t); 104 extern size_t append_ipl_scpdata(char *, size_t); 105 106 enum { 107 IPL_DEVNO_VALID = 1, 108 IPL_PARMBLOCK_VALID = 2, 109 IPL_NSS_VALID = 4, 110 }; 111 112 enum ipl_type { 113 IPL_TYPE_UNKNOWN = 1, 114 IPL_TYPE_CCW = 2, 115 IPL_TYPE_FCP = 4, 116 IPL_TYPE_FCP_DUMP = 8, 117 IPL_TYPE_NSS = 16, 118 }; 119 120 struct ipl_info 121 { 122 enum ipl_type type; 123 union { 124 struct { 125 struct ccw_dev_id dev_id; 126 } ccw; 127 struct { 128 struct ccw_dev_id dev_id; 129 u64 wwpn; 130 u64 lun; 131 } fcp; 132 struct { 133 char name[NSS_NAME_SIZE + 1]; 134 } nss; 135 } data; 136 }; 137 138 extern struct ipl_info ipl_info; 139 extern void setup_ipl(void); 140 141 /* 142 * DIAG 308 support 143 */ 144 enum diag308_subcode { 145 DIAG308_REL_HSA = 2, 146 DIAG308_IPL = 3, 147 DIAG308_DUMP = 4, 148 DIAG308_SET = 5, 149 DIAG308_STORE = 6, 150 }; 151 152 enum diag308_ipl_type { 153 DIAG308_IPL_TYPE_FCP = 0, 154 DIAG308_IPL_TYPE_CCW = 2, 155 }; 156 157 enum diag308_opt { 158 DIAG308_IPL_OPT_IPL = 0x10, 159 DIAG308_IPL_OPT_DUMP = 0x20, 160 }; 161 162 enum diag308_flags { 163 DIAG308_FLAGS_LP_VALID = 0x80, 164 }; 165 166 enum diag308_vm_flags { 167 DIAG308_VM_FLAGS_NSS_VALID = 0x80, 168 DIAG308_VM_FLAGS_VP_VALID = 0x40, 169 }; 170 171 enum diag308_rc { 172 DIAG308_RC_OK = 0x0001, 173 DIAG308_RC_NOCONFIG = 0x0102, 174 }; 175 176 extern int diag308(unsigned long subcode, void *addr); 177 extern void diag308_reset(void); 178 extern void store_status(void); 179 extern void lgr_info_log(void); 180 181 #endif /* _ASM_S390_IPL_H */ 182