189 lines
4.9 KiB
C
189 lines
4.9 KiB
C
/*
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* s390 IPL device
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*
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* Copyright 2015 IBM Corp.
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* Author(s): Zhang Fan <bjfanzh@cn.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef HW_S390_IPL_H
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#define HW_S390_IPL_H
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#include "cpu.h"
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#include "hw/qdev-core.h"
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struct IplBlockCcw {
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uint8_t reserved0[85];
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uint8_t ssid;
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uint16_t devno;
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uint8_t vm_flags;
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uint8_t reserved3[3];
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uint32_t vm_parm_len;
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uint8_t nss_name[8];
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uint8_t vm_parm[64];
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uint8_t reserved4[8];
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} QEMU_PACKED;
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typedef struct IplBlockCcw IplBlockCcw;
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struct IplBlockFcp {
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uint8_t reserved1[305 - 1];
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uint8_t opt;
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uint8_t reserved2[3];
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uint16_t reserved3;
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uint16_t devno;
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uint8_t reserved4[4];
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uint64_t wwpn;
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uint64_t lun;
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uint32_t bootprog;
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uint8_t reserved5[12];
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uint64_t br_lba;
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uint32_t scp_data_len;
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uint8_t reserved6[260];
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uint8_t scp_data[];
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} QEMU_PACKED;
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typedef struct IplBlockFcp IplBlockFcp;
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struct IplBlockQemuScsi {
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uint32_t lun;
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uint16_t target;
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uint16_t channel;
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uint8_t reserved0[77];
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uint8_t ssid;
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uint16_t devno;
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} QEMU_PACKED;
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typedef struct IplBlockQemuScsi IplBlockQemuScsi;
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#define DIAG308_FLAGS_LP_VALID 0x80
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union IplParameterBlock {
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struct {
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uint32_t len;
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uint8_t reserved0[3];
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uint8_t version;
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uint32_t blk0_len;
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uint8_t pbt;
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uint8_t flags;
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uint16_t reserved01;
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uint8_t loadparm[8];
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union {
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IplBlockCcw ccw;
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IplBlockFcp fcp;
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IplBlockQemuScsi scsi;
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};
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} QEMU_PACKED;
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struct {
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uint8_t reserved1[110];
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uint16_t devno;
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uint8_t reserved2[88];
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uint8_t reserved_ext[4096 - 200];
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} QEMU_PACKED;
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} QEMU_PACKED;
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typedef union IplParameterBlock IplParameterBlock;
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int s390_ipl_set_loadparm(uint8_t *loadparm);
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void s390_ipl_update_diag308(IplParameterBlock *iplb);
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void s390_ipl_prepare_cpu(S390CPU *cpu);
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IplParameterBlock *s390_ipl_get_iplb(void);
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enum s390_reset {
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/* default is a reset not triggered by a CPU e.g. issued by QMP */
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S390_RESET_EXTERNAL = 0,
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S390_RESET_REIPL,
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S390_RESET_MODIFIED_CLEAR,
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S390_RESET_LOAD_NORMAL,
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};
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void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type);
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void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type);
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void s390_ipl_clear_reset_request(void);
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#define QIPL_ADDRESS 0xcc
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/* Boot Menu flags */
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#define QIPL_FLAG_BM_OPTS_CMD 0x80
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#define QIPL_FLAG_BM_OPTS_ZIPL 0x40
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/*
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* The QEMU IPL Parameters will be stored at absolute address
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* 204 (0xcc) which means it is 32-bit word aligned but not
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* double-word aligned.
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* Placement of data fields in this area must account for
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* their alignment needs. E.g., netboot_start_address must
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* have an offset of 4 + n * 8 bytes within the struct in order
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* to keep it double-word aligned.
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* The total size of the struct must never exceed 28 bytes.
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* This definition must be kept in sync with the defininition
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* in pc-bios/s390-ccw/iplb.h.
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*/
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struct QemuIplParameters {
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uint8_t qipl_flags;
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uint8_t reserved1[3];
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uint64_t netboot_start_addr;
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uint32_t boot_menu_timeout;
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uint8_t reserved2[12];
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} QEMU_PACKED;
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typedef struct QemuIplParameters QemuIplParameters;
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#define TYPE_S390_IPL "s390-ipl"
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#define S390_IPL(obj) OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
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struct S390IPLState {
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/*< private >*/
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DeviceState parent_obj;
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IplParameterBlock iplb;
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QemuIplParameters qipl;
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uint64_t start_addr;
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uint64_t compat_start_addr;
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uint64_t bios_start_addr;
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uint64_t compat_bios_start_addr;
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bool enforce_bios;
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bool iplb_valid;
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bool netboot;
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/* reset related properties don't have to be migrated or reset */
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enum s390_reset reset_type;
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int reset_cpu_index;
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/*< public >*/
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char *kernel;
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char *initrd;
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char *cmdline;
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char *firmware;
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char *netboot_fw;
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uint8_t cssid;
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uint8_t ssid;
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uint16_t devno;
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bool iplbext_migration;
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};
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typedef struct S390IPLState S390IPLState;
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QEMU_BUILD_BUG_MSG(offsetof(S390IPLState, iplb) & 3, "alignment of iplb wrong");
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#define S390_IPL_TYPE_FCP 0x00
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#define S390_IPL_TYPE_CCW 0x02
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#define S390_IPL_TYPE_QEMU_SCSI 0xff
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#define S390_IPLB_HEADER_LEN 8
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#define S390_IPLB_MIN_CCW_LEN 200
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#define S390_IPLB_MIN_FCP_LEN 384
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#define S390_IPLB_MIN_QEMU_SCSI_LEN 200
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static inline bool iplb_valid_len(IplParameterBlock *iplb)
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{
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return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
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}
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static inline bool iplb_valid_ccw(IplParameterBlock *iplb)
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{
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return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN &&
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iplb->pbt == S390_IPL_TYPE_CCW;
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}
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static inline bool iplb_valid_fcp(IplParameterBlock *iplb)
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{
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return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN &&
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iplb->pbt == S390_IPL_TYPE_FCP;
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}
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#endif
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