LXR qemu/hw/s390x/ipl.h

   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
  18struct 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;
  29typedef struct IplBlockCcw IplBlockCcw;
  30
  31struct 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;
  47typedef struct IplBlockFcp IplBlockFcp;
  48
  49struct 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;
  57typedef struct IplBlockQemuScsi IplBlockQemuScsi;
  58
  59union 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;
  82typedef union IplParameterBlock IplParameterBlock;
  83
  84void s390_ipl_update_diag308(IplParameterBlock *iplb);
  85void s390_ipl_prepare_cpu(S390CPU *cpu);
  86IplParameterBlock *s390_ipl_get_iplb(void);
  87void 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
  92struct 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};
 114typedef 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
 125static inline bool iplb_valid_len(IplParameterBlock *iplb)
 126{
 127    return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
 128}
 129
 130static 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
 136static 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