1 /* 2 * s390 IPL device 3 * 4 * Copyright 2015 IBM Corp. 5 * Author(s): Zhang Fan <bjfanzh@cn.ibm.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or (at 8 * your option) any later version. See the COPYING file in the top-level 9 * directory. 10 */ 11 12 #ifndef HW_S390_IPL_H 13 #define HW_S390_IPL_H 14 15 #include "hw/qdev.h" 16 #include "cpu.h" 17 18 struct IplBlockCcw { 19 uint8_t reserved0[85]; 20 uint8_t ssid; 21 uint16_t devno; 22 uint8_t vm_flags; 23 uint8_t reserved3[3]; 24 uint32_t vm_parm_len; 25 uint8_t nss_name[8]; 26 uint8_t vm_parm[64]; 27 uint8_t reserved4[8]; 28 } QEMU_PACKED; 29 typedef struct IplBlockCcw IplBlockCcw; 30 31 struct IplBlockFcp { 32 uint8_t reserved1[305 - 1]; 33 uint8_t opt; 34 uint8_t reserved2[3]; 35 uint16_t reserved3; 36 uint16_t devno; 37 uint8_t reserved4[4]; 38 uint64_t wwpn; 39 uint64_t lun; 40 uint32_t bootprog; 41 uint8_t reserved5[12]; 42 uint64_t br_lba; 43 uint32_t scp_data_len; 44 uint8_t reserved6[260]; 45 uint8_t scp_data[]; 46 } QEMU_PACKED; 47 typedef struct IplBlockFcp IplBlockFcp; 48 49 struct IplBlockQemuScsi { 50 uint32_t lun; 51 uint16_t target; 52 uint16_t channel; 53 uint8_t reserved0[77]; 54 uint8_t ssid; 55 uint16_t devno; 56 } QEMU_PACKED; 57 typedef struct IplBlockQemuScsi IplBlockQemuScsi; 58 59 union IplParameterBlock { 60 struct { 61 uint32_t len; 62 uint8_t reserved0[3]; 63 uint8_t version; 64 uint32_t blk0_len; 65 uint8_t pbt; 66 uint8_t flags; 67 uint16_t reserved01; 68 uint8_t loadparm[8]; 69 union { 70 IplBlockCcw ccw; 71 IplBlockFcp fcp; 72 IplBlockQemuScsi scsi; 73 }; 74 } QEMU_PACKED; 75 struct { 76 uint8_t reserved1[110]; 77 uint16_t devno; 78 uint8_t reserved2[88]; 79 uint8_t reserved_ext[4096 - 200]; 80 } QEMU_PACKED; 81 } QEMU_PACKED; 82 typedef union IplParameterBlock IplParameterBlock; 83 84 void s390_ipl_update_diag308(IplParameterBlock *iplb); 85 void s390_ipl_prepare_cpu(S390CPU *cpu); 86 IplParameterBlock *s390_ipl_get_iplb(void); 87 void s390_reipl_request(void); 88 89 #define TYPE_S390_IPL "s390-ipl" 90 #define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL) 91 92 struct S390IPLState { 93 /*< private >*/ 94 DeviceState parent_obj; 95 uint64_t start_addr; 96 uint64_t compat_start_addr; 97 uint64_t bios_start_addr; 98 uint64_t compat_bios_start_addr; 99 bool enforce_bios; 100 IplParameterBlock iplb; 101 bool iplb_valid; 102 bool reipl_requested; 103 104 /*< public >*/ 105 char *kernel; 106 char *initrd; 107 char *cmdline; 108 char *firmware; 109 uint8_t cssid; 110 uint8_t ssid; 111 uint16_t devno; 112 bool iplbext_migration; 113 }; 114 typedef struct S390IPLState S390IPLState; 115 116 #define S390_IPL_TYPE_FCP 0x00 117 #define S390_IPL_TYPE_CCW 0x02 118 #define S390_IPL_TYPE_QEMU_SCSI 0xff 119 120 #define S390_IPLB_HEADER_LEN 8 121 #define S390_IPLB_MIN_CCW_LEN 200 122 #define S390_IPLB_MIN_FCP_LEN 384 123 #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 124 125 static inline bool iplb_valid_len(IplParameterBlock *iplb) 126 { 127 return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock); 128 } 129 130 static inline bool iplb_valid_ccw(IplParameterBlock *iplb) 131 { 132 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN && 133 iplb->pbt == S390_IPL_TYPE_CCW; 134 } 135 136 static inline bool iplb_valid_fcp(IplParameterBlock *iplb) 137 { 138 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN && 139 iplb->pbt == S390_IPL_TYPE_FCP; 140 } 141 142 #endif 143