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 32struct 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 42struct 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 59struct ipl_block_ccw { 60 u8 load_param[8]; 61 u8 reserved1[84]; 62 u8 reserved2[2]; 63 u16 devno; 64 u8 vm_flags; 65 u8 reserved3[3]; 66 u32 vm_parm_len; 67 u8 reserved4[80]; 68} __attribute__((packed)); 69 70struct ipl_parameter_block { 71 struct ipl_list_hdr hdr; 72 union { 73 struct ipl_block_fcp fcp; 74 struct ipl_block_ccw ccw; 75 } ipl_info; 76} __attribute__((packed)); 77 78/* 79 * IPL validity flags 80 */ 81extern u32 ipl_flags; 82extern u32 dump_prefix_page; 83extern unsigned int zfcpdump_prefix_array[]; 84 85extern void do_reipl(void); 86extern void ipl_save_parameters(void); 87 88enum { 89 IPL_DEVNO_VALID = 1, 90 IPL_PARMBLOCK_VALID = 2, 91 IPL_NSS_VALID = 4, 92}; 93 94enum ipl_type { 95 IPL_TYPE_UNKNOWN = 1, 96 IPL_TYPE_CCW = 2, 97 IPL_TYPE_FCP = 4, 98 IPL_TYPE_FCP_DUMP = 8, 99 IPL_TYPE_NSS = 16, 100}; 101 102struct ipl_info 103{ 104 enum ipl_type type; 105 union { 106 struct { 107 struct ccw_dev_id dev_id; 108 } ccw; 109 struct { 110 struct ccw_dev_id dev_id; 111 u64 wwpn; 112 u64 lun; 113 } fcp; 114 struct { 115 char name[NSS_NAME_SIZE + 1]; 116 } nss; 117 } data; 118}; 119 120extern struct ipl_info ipl_info; 121extern void setup_ipl_info(void); 122 123/* 124 * DIAG 308 support 125 */ 126enum diag308_subcode { 127 DIAG308_REL_HSA = 2, 128 DIAG308_IPL = 3, 129 DIAG308_DUMP = 4, 130 DIAG308_SET = 5, 131 DIAG308_STORE = 6, 132}; 133 134enum diag308_ipl_type { 135 DIAG308_IPL_TYPE_FCP = 0, 136 DIAG308_IPL_TYPE_CCW = 2, 137}; 138 139enum diag308_opt { 140 DIAG308_IPL_OPT_IPL = 0x10, 141 DIAG308_IPL_OPT_DUMP = 0x20, 142}; 143 144enum diag308_rc { 145 DIAG308_RC_OK = 1, 146}; 147 148extern int diag308(unsigned long subcode, void *addr); 149 150#endif /* _ASM_S390_IPL_H */ 151