diff options
Diffstat (limited to 'hw/s390x/ipl.h')
| -rw-r--r-- | hw/s390x/ipl.h | 103 |
1 files changed, 102 insertions, 1 deletions
diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h index 3e44abe1c6..53cc9eb5ac 100644 --- a/hw/s390x/ipl.h +++ b/hw/s390x/ipl.h @@ -1,8 +1,9 @@ /* * s390 IPL device * - * Copyright 2015 IBM Corp. + * Copyright 2015, 2020 IBM Corp. * Author(s): Zhang Fan <bjfanzh@cn.ibm.com> + * Janosch Frank <frankja@linux.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 @@ -13,8 +14,27 @@ #define HW_S390_IPL_H #include "cpu.h" +#include "exec/address-spaces.h" #include "hw/qdev-core.h" +struct IPLBlockPVComp { + uint64_t tweak_pref; + uint64_t addr; + uint64_t size; +} QEMU_PACKED; +typedef struct IPLBlockPVComp IPLBlockPVComp; + +struct IPLBlockPV { + uint8_t reserved18[87]; /* 0x18 */ + uint8_t version; /* 0x6f */ + uint32_t reserved70; /* 0x70 */ + uint32_t num_comp; /* 0x74 */ + uint64_t pv_header_addr; /* 0x78 */ + uint64_t pv_header_len; /* 0x80 */ + struct IPLBlockPVComp components[]; +} QEMU_PACKED; +typedef struct IPLBlockPV IPLBlockPV; + struct IplBlockCcw { uint8_t reserved0[85]; uint8_t ssid; @@ -71,6 +91,7 @@ union IplParameterBlock { union { IplBlockCcw ccw; IplBlockFcp fcp; + IPLBlockPV pv; IplBlockQemuScsi scsi; }; } QEMU_PACKED; @@ -85,8 +106,11 @@ typedef union IplParameterBlock IplParameterBlock; int s390_ipl_set_loadparm(uint8_t *loadparm); void s390_ipl_update_diag308(IplParameterBlock *iplb); +int s390_ipl_prepare_pv_header(void); +int s390_ipl_pv_unpack(void); void s390_ipl_prepare_cpu(S390CPU *cpu); IplParameterBlock *s390_ipl_get_iplb(void); +IplParameterBlock *s390_ipl_get_iplb_pv(void); enum s390_reset { /* default is a reset not triggered by a CPU e.g. issued by QMP */ @@ -94,6 +118,7 @@ enum s390_reset { S390_RESET_REIPL, S390_RESET_MODIFIED_CLEAR, S390_RESET_LOAD_NORMAL, + S390_RESET_PV, }; void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type); void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type); @@ -133,6 +158,7 @@ struct S390IPLState { /*< private >*/ DeviceState parent_obj; IplParameterBlock iplb; + IplParameterBlock iplb_pv; QemuIplParameters qipl; uint64_t start_addr; uint64_t compat_start_addr; @@ -140,6 +166,7 @@ struct S390IPLState { uint64_t compat_bios_start_addr; bool enforce_bios; bool iplb_valid; + bool iplb_valid_pv; bool netboot; /* reset related properties don't have to be migrated or reset */ enum s390_reset reset_type; @@ -159,11 +186,29 @@ struct S390IPLState { typedef struct S390IPLState S390IPLState; QEMU_BUILD_BUG_MSG(offsetof(S390IPLState, iplb) & 3, "alignment of iplb wrong"); +#define DIAG_308_RC_OK 0x0001 +#define DIAG_308_RC_NO_CONF 0x0102 +#define DIAG_308_RC_INVALID 0x0402 +#define DIAG_308_RC_NO_PV_CONF 0x0902 +#define DIAG_308_RC_INVAL_FOR_PV 0x0a02 + +#define DIAG308_RESET_MOD_CLR 0 +#define DIAG308_RESET_LOAD_NORM 1 +#define DIAG308_LOAD_CLEAR 3 +#define DIAG308_LOAD_NORMAL_DUMP 4 +#define DIAG308_SET 5 +#define DIAG308_STORE 6 +#define DIAG308_PV_SET 8 +#define DIAG308_PV_STORE 9 +#define DIAG308_PV_START 10 + #define S390_IPL_TYPE_FCP 0x00 #define S390_IPL_TYPE_CCW 0x02 +#define S390_IPL_TYPE_PV 0x05 #define S390_IPL_TYPE_QEMU_SCSI 0xff #define S390_IPLB_HEADER_LEN 8 +#define S390_IPLB_MIN_PV_LEN 148 #define S390_IPLB_MIN_CCW_LEN 200 #define S390_IPLB_MIN_FCP_LEN 384 #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 @@ -173,6 +218,62 @@ static inline bool iplb_valid_len(IplParameterBlock *iplb) return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock); } +static inline bool ipl_valid_pv_components(IplParameterBlock *iplb) +{ + IPLBlockPV *ipib_pv = &iplb->pv; + int i; + + if (ipib_pv->num_comp == 0) { + return false; + } + + for (i = 0; i < ipib_pv->num_comp; i++) { + /* Addr must be 4k aligned */ + if (ipib_pv->components[i].addr & ~TARGET_PAGE_MASK) { + return false; + } + + /* Tweak prefix is monotonically increasing with each component */ + if (i < ipib_pv->num_comp - 1 && + ipib_pv->components[i].tweak_pref >= + ipib_pv->components[i + 1].tweak_pref) { + return false; + } + } + return true; +} + +static inline bool ipl_valid_pv_header(IplParameterBlock *iplb) +{ + IPLBlockPV *ipib_pv = &iplb->pv; + + if (ipib_pv->pv_header_len > 2 * TARGET_PAGE_SIZE) { + return false; + } + + if (!address_space_access_valid(&address_space_memory, + ipib_pv->pv_header_addr, + ipib_pv->pv_header_len, + false, + MEMTXATTRS_UNSPECIFIED)) { + return false; + } + + return true; +} + +static inline bool iplb_valid_pv(IplParameterBlock *iplb) +{ + if (iplb->pbt != S390_IPL_TYPE_PV || + be32_to_cpu(iplb->len) < S390_IPLB_MIN_PV_LEN) { + return false; + } + if (!ipl_valid_pv_header(iplb)) { + return false; + } + return ipl_valid_pv_components(iplb); +} + static inline bool iplb_valid(IplParameterBlock *iplb) { switch (iplb->pbt) { |