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/types.h> 11 #include <asm/cio.h> 12 #include <asm/setup.h> 13 14 #define IPL_PARMBLOCK_ORIGIN 0x2000 15 16 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \ 17 sizeof(struct ipl_block_fcp)) 18 19 #define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 8) 20 21 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \ 22 sizeof(struct ipl_block_ccw)) 23 24 #define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 8) 25 26 #define IPL_MAX_SUPPORTED_VERSION (0) 27 28 #define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \ 29 IPL_PARMBLOCK_ORIGIN) 30 #define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len) 31 32 struct ipl_list_hdr { 33 u32 len; 34 u8 reserved1[3]; 35 u8 version; 36 u32 blk0_len; 37 u8 pbt; 38 u8 flags; 39 u16 reserved2; 40 } __attribute__((packed)); 41 42 struct ipl_block_fcp { 43 u8 reserved1[313-1]; 44 u8 opt; 45 u8 reserved2[3]; 46 u16 reserved3; 47 u16 devno; 48 u8 reserved4[4]; 49 u64 wwpn; 50 u64 lun; 51 u32 bootprog; 52 u8 reserved5[12]; 53 u64 br_lba; 54 u32 scp_data_len; 55 u8 reserved6[260]; 56 u8 scp_data[]; 57 } __attribute__((packed)); 58 59 #define DIAG308_VMPARM_SIZE 64 60 #define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \ 61 offsetof(struct ipl_block_fcp, scp_data))) 62 63 struct ipl_block_ccw { 64 u8 load_parm[8]; 65 u8 reserved1[84]; 66 u8 reserved2[2]; 67 u16 devno; 68 u8 vm_flags; 69 u8 reserved3[3]; 70 u32 vm_parm_len; 71 u8 nss_name[8]; 72 u8 vm_parm[DIAG308_VMPARM_SIZE]; 73 u8 reserved4[8]; 74 } __attribute__((packed)); 75 76 struct ipl_parameter_block { 77 struct ipl_list_hdr hdr; 78 union { 79 struct ipl_block_fcp fcp; 80 struct ipl_block_ccw ccw; 81 } ipl_info; 82 } __attribute__((packed,aligned(4096))); 83 84 /* 85 * IPL validity flags 86 */ 87 extern u32 ipl_flags; 88 extern u32 dump_prefix_page; 89 extern unsigned int zfcpdump_prefix_array[]; 90 91 extern void do_reipl(void); 92 extern void do_halt(void); 93 extern void do_poff(void); 94 extern void ipl_save_parameters(void); 95 extern void ipl_update_parameters(void); 96 extern size_t append_ipl_vmparm(char *, size_t); 97 extern size_t append_ipl_scpdata(char *, size_t); 98 99 enum { 100 IPL_DEVNO_VALID = 1, 101 IPL_PARMBLOCK_VALID = 2, 102 IPL_NSS_VALID = 4, 103 }; 104 105 enum ipl_type { 106 IPL_TYPE_UNKNOWN = 1, 107 IPL_TYPE_CCW = 2, 108 IPL_TYPE_FCP = 4, 109 IPL_TYPE_FCP_DUMP = 8, 110 IPL_TYPE_NSS = 16, 111 }; 112 113 struct ipl_info 114 { 115 enum ipl_type type; 116 union { 117 struct { 118 struct ccw_dev_id dev_id; 119 } ccw; 120 struct { 121 struct ccw_dev_id dev_id; 122 u64 wwpn; 123 u64 lun; 124 } fcp; 125 struct { 126 char name[NSS_NAME_SIZE + 1]; 127 } nss; 128 } data; 129 }; 130 131 extern struct ipl_info ipl_info; 132 extern void setup_ipl(void); 133 134 /* 135 * DIAG 308 support 136 */ 137 enum diag308_subcode { 138 DIAG308_REL_HSA = 2, 139 DIAG308_IPL = 3, 140 DIAG308_DUMP = 4, 141 DIAG308_SET = 5, 142 DIAG308_STORE = 6, 143 }; 144 145 enum diag308_ipl_type { 146 DIAG308_IPL_TYPE_FCP = 0, 147 DIAG308_IPL_TYPE_CCW = 2, 148 }; 149 150 enum diag308_opt { 151 DIAG308_IPL_OPT_IPL = 0x10, 152 DIAG308_IPL_OPT_DUMP = 0x20, 153 }; 154 155 enum diag308_flags { 156 DIAG308_FLAGS_LP_VALID = 0x80, 157 }; 158 159 enum diag308_vm_flags { 160 DIAG308_VM_FLAGS_NSS_VALID = 0x80, 161 DIAG308_VM_FLAGS_VP_VALID = 0x40, 162 }; 163 164 enum diag308_rc { 165 DIAG308_RC_OK = 0x0001, 166 DIAG308_RC_NOCONFIG = 0x0102, 167 }; 168 169 extern int diag308(unsigned long subcode, void *addr); 170 extern void diag308_reset(void); 171 extern void store_status(void); 172 extern void lgr_info_log(void); 173 174 #endif /* _ASM_S390_IPL_H */ 175