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qemu/pc-bios/s390-ccw
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Jason J. Herne 872882e771 s390-bios: Skip writing iplb location to low core for ccw ipl 
The architecture states that the iplb location is only written to low
core for list directed ipl and not for traditional ccw ipl. If we don't
skip this then operating systems that load by reading into low core
memory may fail to start.

We should also not write the iplb pointer for network boot as it might
overwrite content that we got via network.

Fixes: 9bfc04f9ef ("pc-bios: s390x: Save iplb location in lowcore")
Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201030122823.347140-1-borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2020-11-04 12:31:24 +01:00
..
bootmap.c pc-bios: s390x: Use reset PSW if avaliable 2020-10-06 20:14:17 +02:00
bootmap.h pc-bios: s390x: Fix bootmap.c zipl component entry data handling 2020-10-06 19:57:35 +02:00
bswap.h pc-bios/s390-ccw: Move byteswap functions to a separate header 2017-07-14 12:29:48 +02:00
cio.c pc-bios: s390x: cio.c cleanup and compile fix 2020-07-02 09:59:10 +02:00
cio.h pc-bios: s390x: Get rid of magic offsets into the lowcore 2020-07-02 09:59:51 +02:00
dasd-ipl.c s390-bios: Support booting from real dasd device 2019-04-12 12:40:35 +02:00
dasd-ipl.h s390-bios: Support booting from real dasd device 2019-04-12 12:40:35 +02:00
helper.h pc-bios: s390x: Make u32 ptr check explicit 2020-07-02 10:00:42 +02:00
iplb.h pc-bios/s390-ccw: define loadparm length 2018-06-18 15:08:44 +02:00
jump2ipl.c pc-bios: s390x: Use reset PSW if avaliable 2020-10-06 20:14:17 +02:00
libc.c pc-bios/s390-ccw: Clean up harmless misuse of isdigit() 2019-05-08 10:52:14 +02:00
libc.h s390-bios: cio error handling 2019-04-12 12:40:35 +02:00
main.c s390-bios: Skip writing iplb location to low core for ccw ipl 2020-11-04 12:31:24 +01:00
Makefile pc-bios/s390-ccw/Makefile: Compile with -std=gnu99, -fwrapv and -fno-common 2020-10-06 19:36:50 +02:00
menu.c pc-bios: s390x: Consolidate timing functions into time.h 2020-07-02 09:59:24 +02:00
netboot.mak pc-bios/s390-ccw: Generate and include dependency files in the Makefile 2020-07-02 10:00:58 +02:00
netmain.c pc-bios: s390x: Move panic() into header and add infinite loop 2020-07-02 10:00:42 +02:00
s390-arch.h pc-bios: s390x: Use PSW masks where possible and introduce PSW_MASK_SHORT_ADDR 2020-07-02 10:00:32 +02:00
s390-ccw.h pc-bios: s390x: Use reset PSW if avaliable 2020-10-06 20:14:17 +02:00
s390-time.h pc-bios: s390x: Consolidate timing functions into time.h 2020-07-02 09:59:24 +02:00
sclp.c pc-bios/s390-ccw: fix sclp_get_loadparm_ascii 2019-11-29 09:16:02 +01:00
sclp.h misc: Replace zero-length arrays with flexible array member (automatic) 2020-03-16 22:07:42 +01:00
scsi.h pc-bios/s390-ccw: Get Block Limits VPD device data 2017-05-19 12:29:01 +02:00
start.S pc-bios: s390x: Go into disabled wait when encountering a PGM exception 2020-10-06 20:14:48 +02:00
virtio-blkdev.c pc-bios/s390-ccw: Do not bail out early if not finding a SCSI disk 2020-10-06 19:36:50 +02:00
virtio-net.c pc-bios: s390x: Move sleep and yield to helper.h 2020-07-02 09:59:51 +02:00
virtio-scsi.c pc-bios/s390-ccw: Do not bail out early if not finding a SCSI disk 2020-10-06 19:36:50 +02:00
virtio-scsi.h pc-bios/s390-ccw: Do not bail out early if not finding a SCSI disk 2020-10-06 19:36:50 +02:00
virtio.c pc-bios: s390x: Consolidate timing functions into time.h 2020-07-02 09:59:24 +02:00
virtio.h pc-bios/s390-ccw: Add virtio-net driver code 2017-07-14 12:29:48 +02:00