bb0995468a
When migrating from a different QEMU version, the start_address and bios_start_address may differ. During migration these values are migrated and overwrite the values that were detected by QEMU itself. On a reboot, QEMU will reload its own BIOS, but use the migrated start addresses, which does not work if the values differ. Fix this by not relying on the migrated values anymore, but still provide them during migration, so existing QEMUs continue to work. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
143 lines
3.3 KiB
C
143 lines
3.3 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 "hw/qdev.h"
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#include "cpu.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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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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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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void s390_reipl_request(void);
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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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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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IplParameterBlock iplb;
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bool iplb_valid;
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bool reipl_requested;
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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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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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#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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