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 union IplParameterBlock { 50 struct { 51 uint32_t len; 52 uint8_t reserved0[3]; 53 uint8_t version; 54 uint32_t blk0_len; 55 uint8_t pbt; 56 uint8_t flags; 57 uint16_t reserved01; 58 uint8_t loadparm[8]; 59 union { 60 IplBlockCcw ccw; 61 IplBlockFcp fcp; 62 }; 63 } QEMU_PACKED; 64 struct { 65 uint8_t reserved1[110]; 66 uint16_t devno; 67 uint8_t reserved2[88]; 68 uint8_t reserved_ext[4096 - 200]; 69 } QEMU_PACKED; 70 } QEMU_PACKED; 71 typedef union IplParameterBlock IplParameterBlock; 72 73 void s390_ipl_update_diag308(IplParameterBlock *iplb); 74 void s390_ipl_prepare_cpu(S390CPU *cpu); 75 IplParameterBlock *s390_ipl_get_iplb(void); 76 void s390_reipl_request(void); 77 78 #define TYPE_S390_IPL "s390-ipl" 79 #define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL) 80 81 struct S390IPLState { 82 /*< private >*/ 83 DeviceState parent_obj; 84 uint64_t start_addr; 85 uint64_t bios_start_addr; 86 bool enforce_bios; 87 IplParameterBlock iplb; 88 bool iplb_valid; 89 bool reipl_requested; 90 91 /*< public >*/ 92 char *kernel; 93 char *initrd; 94 char *cmdline; 95 char *firmware; 96 uint8_t cssid; 97 uint8_t ssid; 98 uint16_t devno; 99 bool iplbext_migration; 100 }; 101 typedef struct S390IPLState S390IPLState; 102 103 #define S390_IPL_TYPE_FCP 0x00 104 #define S390_IPL_TYPE_CCW 0x02 105 106 #define S390_IPLB_HEADER_LEN 8 107 #define S390_IPLB_MIN_CCW_LEN 200 108 #define S390_IPLB_MIN_FCP_LEN 384 109 110 static inline bool iplb_valid_len(IplParameterBlock *iplb) 111 { 112 return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock); 113 } 114 115 static inline bool iplb_valid_ccw(IplParameterBlock *iplb) 116 { 117 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN && 118 iplb->pbt == S390_IPL_TYPE_CCW; 119 } 120 121 static inline bool iplb_valid_fcp(IplParameterBlock *iplb) 122 { 123 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN && 124 iplb->pbt == S390_IPL_TYPE_FCP; 125 } 126 127 #endif 128