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board-qemu/slof/vio-vscsi: Scan up to 64 SCSI IDs 

QEMU supports up the 64 SCSI IDs on the vscsi "bus", see the string
"max_target = 63" in the source file hw/scsi/spapr_vscsi.c of QEMU.
However, SLOF currently only checks the first 9 IDs on the vscsi adaptor,
so when you try to boot from a CD-ROM like this, the boot fails:

 qemu-system-ppc64 ... -device spapr-vscsi,id=scsi0,reg=0x2000 \
    -drive file=/path/to/cdrom.iso,format=raw,if=none,id=dr1,readonly=on \
    -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=63,lun=1,drive=dr1,id=scd1

Thus let's change the amount of IDs that we scan in SLOF to 64, too, to
match the ID range that QEMU provides.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
This commit is contained in:
Thomas Huth 2018-12-06 12:02:16 +01:00 committed by Alexey Kardashevskiy
parent d10500a4e0
commit cad96808d1
1 changed files with 2 additions and 2 deletions
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board-qemu/slof/vio-vscsi.fs
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@ -507,9 +507,9 @@ TRUE VALUE first-time-init?
10000 \ Larger value seem to have problems with some CDROMs
;
8 CONSTANT #dev
\ Report the amount of supported SCSI IDs - QEMU uses "max_target = 63"
: dev-max-target ( -- #max-target )
#dev
40
;
" scsi-probe-helpers.fs" included