Re: [RESEND PATCH 1/1] pc-bios: Add support for List-Directed IPL from ECKD DASD

[Thomas Huth]

On 21/02/2023 18.45, jrossi@linux.ibm.com wrote:
> From: Jared Rossi <jrossi@linux.ibm.com>
>
> 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 of IPL initiated.
>
> In either case CCW- or LD-IPL is transparent to the user and will boot the same
> image regardless of which set of pointers is used. Because the interactive boot
> menu is only written with the old style pointers, the menu will be disabled for
> List Directed IPL from ECKD DASD.
>
> If the LD-IPL fails, retry the IPL using the CCW type pointers.
>
> If no LD-IPL boot record is found, simply perform CCW type IPL as usual.
>
> Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
>
> ---
>   pc-bios/s390-ccw/bootmap.c | 157 ++++++++++++++++++++++++++++---------
>   pc-bios/s390-ccw/bootmap.h |  30 ++++++-
>   2 files changed, 148 insertions(+), 39 deletions(-)

 Janosch, Jason, Eric, Christian,

could you please help with reviewing + testing this patch?

 Thanks,
  Thomas