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Tue, 21 Feb 2023 17:45:51 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AF5F958057; Tue, 21 Feb 2023 17:45:50 +0000 (GMT) Received: from t15.endicott.ibm.com (unknown [9.60.89.108]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 21 Feb 2023 17:45:50 +0000 (GMT) From: jrossi@linux.ibm.com To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Cc: thuth@redhat.com, frankja@linux.ibm.com, jjherne@linux.ibm.com, jrossi@linux.ibm.com Subject: [RESEND PATCH 0/1] pc-bios: Support List-Directed IPL from ECKD DASD Date: Tue, 21 Feb 2023 12:45:47 -0500 Message-Id: <20230221174548.1866861-1-jrossi@linux.ibm.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: dNQipvmQEltekCAhZVcBYSZvzdOViY9o X-Proofpoint-GUID: X2klCYi1tJwG5fQZXoue4t2UUFQ-GxpU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-21_10,2023-02-20_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 spamscore=0 mlxlogscore=999 suspectscore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302210148 Received-SPF: pass client-ip=148.163.158.5; envelope-from=jrossi@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 cylinder, head, and record numbers included in the block pointer; if LD-IPL has been initiated then each pointer will be interpreted using the new format. For simplicity, there is no choice presented to forcibly use CCW-IPL if LD-IPL is available. Because both sets of pointers ultimately go to the same kernel/initrd, using CCW- or LD-IPL is transparent to the user. One aspect of the user experience that does change is the availability of the interactive boot menu when a loadparm is not specified. For the existing CCW-IPL, when the user does not specify a loadparm they are presented with a list of boot options; however, this list is only written in the old style pointers. Therefore, if no loadparm is specified, and LD-IPL is supported, the default boot option will be used automatically. Jared Rossi (1): pc-bios: Add support for List-Directed IPL from ECKD DASD pc-bios/s390-ccw/bootmap.c | 157 ++++++++++++++++++++++++++++--------- pc-bios/s390-ccw/bootmap.h | 30 ++++++- 2 files changed, 148 insertions(+), 39 deletions(-)