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/*
* s390 IPL device
*
* Copyright 2015 IBM Corp.
* Author(s): Zhang Fan <bjfanzh@cn.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef HW_S390_IPL_H
#define HW_S390_IPL_H
#include "hw/qdev.h"
#include "cpu.h"
struct IplBlockCcw {
uint8_t reserved0[85];
uint8_t ssid;
uint16_t devno;
uint8_t vm_flags;
uint8_t reserved3[3];
uint32_t vm_parm_len;
uint8_t nss_name[8];
uint8_t vm_parm[64];
uint8_t reserved4[8];
} QEMU_PACKED;
typedef struct IplBlockCcw IplBlockCcw;
struct IplBlockFcp {
uint8_t reserved1[305 - 1];
uint8_t opt;
uint8_t reserved2[3];
uint16_t reserved3;
uint16_t devno;
uint8_t reserved4[4];
uint64_t wwpn;
uint64_t lun;
uint32_t bootprog;
uint8_t reserved5[12];
uint64_t br_lba;
uint32_t scp_data_len;
uint8_t reserved6[260];
uint8_t scp_data[];
} QEMU_PACKED;
typedef struct IplBlockFcp IplBlockFcp;
struct IplBlockQemuScsi {
uint32_t lun;
uint16_t target;
uint16_t channel;
uint8_t reserved0[77];
uint8_t ssid;
uint16_t devno;
} QEMU_PACKED;
typedef struct IplBlockQemuScsi IplBlockQemuScsi;
union IplParameterBlock {
struct {
uint32_t len;
uint8_t reserved0[3];
uint8_t version;
uint32_t blk0_len;
uint8_t pbt;
uint8_t flags;
uint16_t reserved01;
uint8_t loadparm[8];
union {
IplBlockCcw ccw;
IplBlockFcp fcp;
IplBlockQemuScsi scsi;
};
} QEMU_PACKED;
struct {
uint8_t reserved1[110];
uint16_t devno;
uint8_t reserved2[88];
uint8_t reserved_ext[4096 - 200];
} QEMU_PACKED;
} QEMU_PACKED;
typedef union IplParameterBlock IplParameterBlock;
void s390_ipl_update_diag308(IplParameterBlock *iplb);
void s390_ipl_prepare_cpu(S390CPU *cpu);
IplParameterBlock *s390_ipl_get_iplb(void);
void s390_reipl_request(void);
#define TYPE_S390_IPL "s390-ipl"
#define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
struct S390IPLState {
/*< private >*/
DeviceState parent_obj;
uint64_t start_addr;
uint64_t compat_start_addr;
uint64_t bios_start_addr;
uint64_t compat_bios_start_addr;
bool enforce_bios;
IplParameterBlock iplb;
bool iplb_valid;
bool reipl_requested;
/*< public >*/
char *kernel;
char *initrd;
char *cmdline;
char *firmware;
uint8_t cssid;
uint8_t ssid;
uint16_t devno;
bool iplbext_migration;
};
typedef struct S390IPLState S390IPLState;
#define S390_IPL_TYPE_FCP 0x00
#define S390_IPL_TYPE_CCW 0x02
#define S390_IPL_TYPE_QEMU_SCSI 0xff
#define S390_IPLB_HEADER_LEN 8
#define S390_IPLB_MIN_CCW_LEN 200
#define S390_IPLB_MIN_FCP_LEN 384
#define S390_IPLB_MIN_QEMU_SCSI_LEN 200
static inline bool iplb_valid_len(IplParameterBlock *iplb)
{
return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
}
static inline bool iplb_valid_ccw(IplParameterBlock *iplb)
{
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN &&
iplb->pbt == S390_IPL_TYPE_CCW;
}
static inline bool iplb_valid_fcp(IplParameterBlock *iplb)
{
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN &&
iplb->pbt == S390_IPL_TYPE_FCP;
}
#endif
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