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    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;
  30typedef struct IplBlockCcw IplBlockCcw;
  31
  32struct 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;
  48typedef struct IplBlockFcp IplBlockFcp;
  49
  50struct 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;
  58typedef struct IplBlockQemuScsi IplBlockQemuScsi;
  59
  60#define DIAG308_FLAGS_LP_VALID 0x80
  61
  62union IplParameterBlock {
  63    struct {
  64        uint32_t len;
  65        uint8_t  reserved0[3];
  66        uint8_t  version;
  67        uint32_t blk0_len;
  68        uint8_t  pbt;
  69        uint8_t  flags;
  70        uint16_t reserved01;
  71        uint8_t  loadparm[8];
  72        union {
  73            IplBlockCcw ccw;
  74            IplBlockFcp fcp;
  75            IplBlockQemuScsi scsi;
  76        };
  77    } QEMU_PACKED;
  78    struct {
  79        uint8_t  reserved1[110];
  80        uint16_t devno;
  81        uint8_t  reserved2[88];
  82        uint8_t  reserved_ext[4096 - 200];
  83    } QEMU_PACKED;
  84} QEMU_PACKED;
  85typedef union IplParameterBlock IplParameterBlock;
  86
  87int s390_ipl_set_loadparm(uint8_t *loadparm);
  88void s390_ipl_update_diag308(IplParameterBlock *iplb);
  89void s390_ipl_prepare_cpu(S390CPU *cpu);
  90IplParameterBlock *s390_ipl_get_iplb(void);
  91void s390_reipl_request(void);
  92
  93#define TYPE_S390_IPL "s390-ipl"
  94#define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
  95
  96struct S390IPLState {
  97    /*< private >*/
  98    DeviceState parent_obj;
  99    uint64_t start_addr;
 100    uint64_t compat_start_addr;
 101    uint64_t bios_start_addr;
 102    uint64_t compat_bios_start_addr;
 103    bool enforce_bios;
 104    IplParameterBlock iplb;
 105    bool iplb_valid;
 106    bool reipl_requested;
 107    bool netboot;
 108
 109    /*< public >*/
 110    char *kernel;
 111    char *initrd;
 112    char *cmdline;
 113    char *firmware;
 114    char *netboot_fw;
 115    uint8_t cssid;
 116    uint8_t ssid;
 117    uint16_t devno;
 118    bool iplbext_migration;
 119};
 120typedef struct S390IPLState S390IPLState;
 121
 122#define S390_IPL_TYPE_FCP 0x00
 123#define S390_IPL_TYPE_CCW 0x02
 124#define S390_IPL_TYPE_QEMU_SCSI 0xff
 125
 126#define S390_IPLB_HEADER_LEN 8
 127#define S390_IPLB_MIN_CCW_LEN 200
 128#define S390_IPLB_MIN_FCP_LEN 384
 129#define S390_IPLB_MIN_QEMU_SCSI_LEN 200
 130
 131static inline bool iplb_valid_len(IplParameterBlock *iplb)
 132{
 133    return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
 134}
 135
 136static inline bool iplb_valid_ccw(IplParameterBlock *iplb)
 137{
 138    return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN &&
 139           iplb->pbt == S390_IPL_TYPE_CCW;
 140}
 141
 142static inline bool iplb_valid_fcp(IplParameterBlock *iplb)
 143{
 144    return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN &&
 145           iplb->pbt == S390_IPL_TYPE_FCP;
 146}
 147
 148#endif
 149