4 * Copyright 2015 IBM Corp.
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
19 uint8_t reserved0[85];
29 typedef struct IplBlockCcw IplBlockCcw;
32 uint8_t reserved1[305 - 1];
41 uint8_t reserved5[12];
43 uint32_t scp_data_len;
44 uint8_t reserved6[260];
47 typedef struct IplBlockFcp IplBlockFcp;
49 struct IplBlockQemuScsi {
53 uint8_t reserved0[77];
57 typedef struct IplBlockQemuScsi IplBlockQemuScsi;
59 #define DIAG308_FLAGS_LP_VALID 0x80
61 union IplParameterBlock {
74 IplBlockQemuScsi scsi;
78 uint8_t reserved1[110];
80 uint8_t reserved2[88];
81 uint8_t reserved_ext[4096 - 200];
84 typedef union IplParameterBlock IplParameterBlock;
86 int s390_ipl_set_loadparm(uint8_t *loadparm);
87 void s390_ipl_update_diag308(IplParameterBlock *iplb);
88 void s390_ipl_prepare_cpu(S390CPU *cpu);
89 IplParameterBlock *s390_ipl_get_iplb(void);
90 void s390_reipl_request(void);
92 #define QIPL_ADDRESS 0xcc
95 #define QIPL_FLAG_BM_OPTS_CMD 0x80
96 #define QIPL_FLAG_BM_OPTS_ZIPL 0x40
99 * The QEMU IPL Parameters will be stored at absolute address
100 * 204 (0xcc) which means it is 32-bit word aligned but not
101 * double-word aligned.
102 * Placement of data fields in this area must account for
103 * their alignment needs. E.g., netboot_start_address must
104 * have an offset of 4 + n * 8 bytes within the struct in order
105 * to keep it double-word aligned.
106 * The total size of the struct must never exceed 28 bytes.
107 * This definition must be kept in sync with the defininition
108 * in pc-bios/s390-ccw/iplb.h.
110 struct QemuIplParameters {
112 uint8_t reserved1[3];
113 uint64_t netboot_start_addr;
114 uint32_t boot_menu_timeout;
115 uint8_t reserved2[12];
117 typedef struct QemuIplParameters QemuIplParameters;
119 #define TYPE_S390_IPL "s390-ipl"
120 #define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
122 struct S390IPLState {
124 DeviceState parent_obj;
126 uint64_t compat_start_addr;
127 uint64_t bios_start_addr;
128 uint64_t compat_bios_start_addr;
130 IplParameterBlock iplb;
132 bool reipl_requested;
134 QemuIplParameters qipl;
145 bool iplbext_migration;
147 typedef struct S390IPLState S390IPLState;
149 #define S390_IPL_TYPE_FCP 0x00
150 #define S390_IPL_TYPE_CCW 0x02
151 #define S390_IPL_TYPE_QEMU_SCSI 0xff
153 #define S390_IPLB_HEADER_LEN 8
154 #define S390_IPLB_MIN_CCW_LEN 200
155 #define S390_IPLB_MIN_FCP_LEN 384
156 #define S390_IPLB_MIN_QEMU_SCSI_LEN 200
158 static inline bool iplb_valid_len(IplParameterBlock *iplb)
160 return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
163 static inline bool iplb_valid_ccw(IplParameterBlock *iplb)
165 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN &&
166 iplb->pbt == S390_IPL_TYPE_CCW;
169 static inline bool iplb_valid_fcp(IplParameterBlock *iplb)
171 return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN &&
172 iplb->pbt == S390_IPL_TYPE_FCP;