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 61 struct ipl_block_ccw { 62 u8 load_parm[8]; 63 u8 reserved1[84]; 64 u8 reserved2[2]; 65 u16 devno; 66 u8 vm_flags; 67 u8 reserved3[3]; 68 u32 vm_parm_len; 69 u8 nss_name[8]; 70 u8 vm_parm[DIAG308_VMPARM_SIZE]; 71 u8 reserved4[8]; 72 } __attribute__((packed)); 73 74 struct ipl_parameter_block { 75 struct ipl_list_hdr hdr; 76 union { 77 struct ipl_block_fcp fcp; 78 struct ipl_block_ccw ccw; 79 } ipl_info; 80 } __attribute__((packed,aligned(4096))); 81 82 /* 83 * IPL validity flags 84 */ 85 extern u32 ipl_flags; 86 extern u32 dump_prefix_page; 87 extern unsigned int zfcpdump_prefix_array[]; 88 89 extern void do_reipl(void); 90 extern void do_halt(void); 91 extern void do_poff(void); 92 extern void ipl_save_parameters(void); 93 extern void ipl_update_parameters(void); 94 extern void get_ipl_vmparm(char *); 95 96 enum { 97 IPL_DEVNO_VALID = 1, 98 IPL_PARMBLOCK_VALID = 2, 99 IPL_NSS_VALID = 4, 100 }; 101 102 enum ipl_type { 103 IPL_TYPE_UNKNOWN = 1, 104 IPL_TYPE_CCW = 2, 105 IPL_TYPE_FCP = 4, 106 IPL_TYPE_FCP_DUMP = 8, 107 IPL_TYPE_NSS = 16, 108 }; 109 110 struct ipl_info 111 { 112 enum ipl_type type; 113 union { 114 struct { 115 struct ccw_dev_id dev_id; 116 } ccw; 117 struct { 118 struct ccw_dev_id dev_id; 119 u64 wwpn; 120 u64 lun; 121 } fcp; 122 struct { 123 char name[NSS_NAME_SIZE + 1]; 124 } nss; 125 } data; 126 }; 127 128 extern struct ipl_info ipl_info; 129 extern void setup_ipl(void); 130 131 /* 132 * DIAG 308 support 133 */ 134 enum diag308_subcode { 135 DIAG308_REL_HSA = 2, 136 DIAG308_IPL = 3, 137 DIAG308_DUMP = 4, 138 DIAG308_SET = 5, 139 DIAG308_STORE = 6, 140 }; 141 142 enum diag308_ipl_type { 143 DIAG308_IPL_TYPE_FCP = 0, 144 DIAG308_IPL_TYPE_CCW = 2, 145 }; 146 147 enum diag308_opt { 148 DIAG308_IPL_OPT_IPL = 0x10, 149 DIAG308_IPL_OPT_DUMP = 0x20, 150 }; 151 152 enum diag308_flags { 153 DIAG308_FLAGS_LP_VALID = 0x80, 154 }; 155 156 enum diag308_vm_flags { 157 DIAG308_VM_FLAGS_NSS_VALID = 0x80, 158 DIAG308_VM_FLAGS_VP_VALID = 0x40, 159 }; 160 161 enum diag308_rc { 162 DIAG308_RC_OK = 0x0001, 163 DIAG308_RC_NOCONFIG = 0x0102, 164 }; 165 166 extern int diag308(unsigned long subcode, void *addr); 167 168 #endif /* _ASM_S390_IPL_H */ 169