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 u16 reserved2 : 13; 68 u8 ssid : 3; 69 u16 devno; 70 u8 vm_flags; 71 u8 reserved3[3]; 72 u32 vm_parm_len; 73 u8 nss_name[8]; 74 u8 vm_parm[DIAG308_VMPARM_SIZE]; 75 u8 reserved4[8]; 76 } __attribute__((packed)); 77 78 struct ipl_parameter_block { 79 struct ipl_list_hdr hdr; 80 union { 81 struct ipl_block_fcp fcp; 82 struct ipl_block_ccw ccw; 83 } ipl_info; 84 } __packed __aligned(PAGE_SIZE); 85 86 /* 87 * IPL validity flags 88 */ 89 extern u32 ipl_flags; 90 91 struct save_area; 92 struct save_area * __init save_area_alloc(bool is_boot_cpu); 93 struct save_area * __init save_area_boot_cpu(void); 94 void __init save_area_add_regs(struct save_area *, void *regs); 95 void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs); 96 97 extern void do_reipl(void); 98 extern void do_halt(void); 99 extern void do_poff(void); 100 extern void ipl_verify_parameters(void); 101 extern void ipl_update_parameters(void); 102 extern size_t append_ipl_vmparm(char *, size_t); 103 extern size_t append_ipl_scpdata(char *, size_t); 104 105 enum { 106 IPL_DEVNO_VALID = 1, 107 IPL_PARMBLOCK_VALID = 2, 108 IPL_NSS_VALID = 4, 109 }; 110 111 enum ipl_type { 112 IPL_TYPE_UNKNOWN = 1, 113 IPL_TYPE_CCW = 2, 114 IPL_TYPE_FCP = 4, 115 IPL_TYPE_FCP_DUMP = 8, 116 IPL_TYPE_NSS = 16, 117 }; 118 119 struct ipl_info 120 { 121 enum ipl_type type; 122 union { 123 struct { 124 struct ccw_dev_id dev_id; 125 } ccw; 126 struct { 127 struct ccw_dev_id dev_id; 128 u64 wwpn; 129 u64 lun; 130 } fcp; 131 struct { 132 char name[NSS_NAME_SIZE + 1]; 133 } nss; 134 } data; 135 }; 136 137 extern struct ipl_info ipl_info; 138 extern void setup_ipl(void); 139 140 /* 141 * DIAG 308 support 142 */ 143 enum diag308_subcode { 144 DIAG308_REL_HSA = 2, 145 DIAG308_LOAD_CLEAR = 3, 146 DIAG308_LOAD_NORMAL_DUMP = 4, 147 DIAG308_SET = 5, 148 DIAG308_STORE = 6, 149 }; 150 151 enum diag308_ipl_type { 152 DIAG308_IPL_TYPE_FCP = 0, 153 DIAG308_IPL_TYPE_CCW = 2, 154 }; 155 156 enum diag308_opt { 157 DIAG308_IPL_OPT_IPL = 0x10, 158 DIAG308_IPL_OPT_DUMP = 0x20, 159 }; 160 161 enum diag308_flags { 162 DIAG308_FLAGS_LP_VALID = 0x80, 163 }; 164 165 enum diag308_vm_flags { 166 DIAG308_VM_FLAGS_NSS_VALID = 0x80, 167 DIAG308_VM_FLAGS_VP_VALID = 0x40, 168 }; 169 170 enum diag308_rc { 171 DIAG308_RC_OK = 0x0001, 172 DIAG308_RC_NOCONFIG = 0x0102, 173 }; 174 175 extern int diag308(unsigned long subcode, void *addr); 176 extern void diag308_reset(void); 177 extern void store_status(void (*fn)(void *), void *data); 178 extern void lgr_info_log(void); 179 180 #endif /* _ASM_S390_IPL_H */ 181