diff options
| author | Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> | 2016-06-01 15:25:51 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2016-07-11 09:48:05 +0200 |
| commit | b39b7718dc23e9890ea7e770f543e6f2d17cb31b (patch) | |
| tree | 853fa5d094ee7f24f0748a15ee8623f7b6ec38d3 /pc-bios/s390-ccw/iplb.h | |
| parent | 4f4a9ca4a4386c137301b3662faba076455ff15a (diff) | |
pc-bios/s390-ccw: Pass selected SCSI device to IPL
There is ,bootindex=%d argument to specify the lookup order of
boot devices.
If a bootindex assigned to the device, then IPL Parameter Info Block
is created for that device when it is IPLed from.
If it is a mere SCSI device (not FCP), then IPIB is created with a
special SCSI type and its fields are used to store SCSI address of the
device. This new ipl block is private to qemu for now.
If the device to IPL from is specified this way, then SCSI bus lookup
is bypassed and prescribed devices uses the address specified.
Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'pc-bios/s390-ccw/iplb.h')
| -rw-r--r-- | pc-bios/s390-ccw/iplb.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/iplb.h b/pc-bios/s390-ccw/iplb.h index 1cf509f497..86abc56a90 100644 --- a/pc-bios/s390-ccw/iplb.h +++ b/pc-bios/s390-ccw/iplb.h @@ -43,6 +43,16 @@ struct IplBlockFcp { } __attribute__ ((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; +} __attribute__ ((packed)); +typedef struct IplBlockQemuScsi IplBlockQemuScsi; + struct IplParameterBlock { uint32_t len; uint8_t reserved0[3]; @@ -55,6 +65,7 @@ struct IplParameterBlock { union { IplBlockCcw ccw; IplBlockFcp fcp; + IplBlockQemuScsi scsi; }; } __attribute__ ((packed)); typedef struct IplParameterBlock IplParameterBlock; @@ -63,6 +74,7 @@ extern IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); #define S390_IPL_TYPE_FCP 0x00 #define S390_IPL_TYPE_CCW 0x02 +#define S390_IPL_TYPE_QEMU_SCSI 0xff static inline bool store_iplb(IplParameterBlock *iplb) { |