From: Jared Rossi
Add a routine for loading the next IPLB if a device fails to boot.
This includes some minor changes to the List-Directed IPL routine so that the
failing device may be retried using the legacy boot pointers before moving on to
the next device.
Signed-off-by: Jared Rossi
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From: Jared Rossi
Currently, stuctures defined in both hw/s390x/ipl.h and pc-bios/s390-ccw/iplb.h
must be kept in sync, which is prone to error. Instead, create a new directory
at include/hw/s390x/ipl/ to contain the definitions that must be shared.
Signed-off-by: Jared Rossi
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From: Jared Rossi
This patch set primarily adds support for the specification of multiple boot
devices, allowing for the guest to automatically use an alternative device on
a failed boot without needing to be reconfigured. It additionally provides the
ability to define the loadparm attribute on
From: Jared Rossi
Write a chain of IPLBs into memory for future use.
The IPLB chain is placed immediately before the BIOS in memory at the highest
unused page boundary providing sufficient space to fit the chain. Because this
is not a fixed address, the location of the next IPLB and number of
From: Jared Rossi
Add a loadparm property to the CcwDevice object so that different loadparms
can be defined on a per-device basis when using multiple boot devices.
The machine/global loadparm is still supported. If both a global and per-device
loadparm are defined, the per-device value will
From: Jared Rossi
On a panic during IPL (i.e. a device failed to boot) check for another device
to boot from, as indicated by the presence of an unused IPLB.
If an IPLB is successfully loaded, then jump to the start of BIOS, restarting
IPL using the updated IPLB. Otherwise enter disabled wait.
From: Jared Rossi
Check for a List Directed IPL Boot Record, which would supersede the CCW type
entries. If the record is valid, proceed to use the new style pointers
and perform LD-IPL. Each block pointer is interpreted as either an LD-IPL
pointer or a legacy CCW pointer depending on the type
From: Jared Rossi
Add support for List-Directed IPL (LD-IPL) type pointers.
We check for a boot record indicating LD-IPL and use it if it is valid,
otherwise we use the CCW CDL or LDL format as usual. When a block is accessed
during IPL the block number is first calculated based on the
