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 uint64_t netboot_start_addr; 20 uint8_t reserved0[77]; 21 uint8_t ssid; 22 uint16_t devno; 23 uint8_t vm_flags; 24 uint8_t reserved3[3]; 25 uint32_t vm_parm_len; 26 uint8_t nss_name[8]; 27 uint8_t vm_parm[64]; 28 uint8_t reserved4[8]; 29 } QEMU_PACKED; 30 typedef struct IplBlockCcw IplBlockCcw; 31 32 struct IplBlockFcp { 33 uint8_t reserved1[305 - 1]; 34 uint8_t opt; 35 uint8_t reserved2[3]; 36 uint16_t reserved3; 37 uint16_t devno; 38 uint8_t reserved4[4]; 39 uint64_t wwpn; 40 uint64_t lun; 41 uint32_t bootprog; 42 uint8_t reserved5[12]; 43 uint64_t br_lba; 44 uint32_t scp_data_len; 45 uint8_t reserved6[260]; 46 uint8_t scp_data[]; 47 } QEMU_PACKED; 48 typedef struct IplBlockFcp IplBlockFcp; 49 50 struct IplBlockQemuScsi { 51 uint32_t lun; 52 uint16_t target; 53 uint16_t channel; 54 uint8_t reserved0[77]; 55 uint8_t ssid; 56 uint16_t devno; 57 } QEMU_PACKED; 58 typedef struct IplBlockQemuScsi IplBlockQemuScsi; 59 60 union IplParameterBlock { 61 struct { 62 uint32_t len; 63 uint8_t reserved0[3]; 64 uint8_t version; 65 uint32_t blk0_len; 66 uint8_t pbt; 67 uint8_t flags; 68 uint16_t reserved01; 69 uint8_t loadparm[8]; 70 union { 71 IplBlockCcw ccw; 72 IplBlockFcp fcp; 73 IplBlockQemuScsi scsi; 74 }; 75 } QEMU_PACKED; 76 struct { 77 uint8_t reserved1[110]; 78 uint16_t devno; 79 uint8_t reserved2[88]; 80 uint8_t reserved_ext[4096 - 200]; 81 } QEMU_PACKED; 82 } QEMU_PACKED; 83 typedef union IplParameterBlock IplParameterBlock; 84 85 void s390_ipl_update_diag308(IplParameterBlock *iplb); 86 void s390_ipl_prepare_cpu(S390CPU *cpu); 87 IplParameterBlock *s390_ipl_get_iplb(void); 88 void s390_reipl_request(void); 89 90 #define TYPE_S390_IPL "s390-ipl" 91 #define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL) 92 93 struct S390IPLState { 94 /*< private >*/ 95 DeviceState parent_obj; 96 uint64_t start_addr; 97 uint64_t compat_start_addr; 98 uint64_t bios_start_addr; 99 uint64_t compat_bios_start_addr; 100 bool enforce_bios; 101 IplParameterBlock iplb; 102 bool iplb_valid; 103 bool reipl_requested; 104 bool netboot; 105 106 /*< public >*/ 107 char *kernel; 108 char *initrd; 109 char *cmdline; 110 char *firmware; 111 char *netboot_fw; 112 uint8_t cssid; 113 uint8_t ssid; 114 uint16_t devno; 115 bool iplbext_migration; 116 }; 117 typedef struct S390IPLState S390IPLState; 118 119 #define S390_IPL_TYPE_FCP 0x00 120 #define S390_IPL_TYPE_CCW 0x02 121 #define S390_IPL_TYPE_QEMU_SCSI 0xff 122 123 #define S390_IPLB_HEADER_LEN 8 124 #define S390_IPLB_MIN_CCW_LEN 200 125 #define S390_IPLB_MIN_FCP_LEN 384 126 #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 127 128 static inline bool iplb_valid_len(IplParameterBlock *iplb) 129 { 130 return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock); 131 } 132 133 static inline bool iplb_valid_ccw(IplParameterBlock *iplb) 134 { 135 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN && 136 iplb->pbt == S390_IPL_TYPE_CCW; 137 } 138 139 static inline bool iplb_valid_fcp(IplParameterBlock *iplb) 140 { 141 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN && 142 iplb->pbt == S390_IPL_TYPE_FCP; 143 } 144 145 #endif 146