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Violators will be prosecuted for from ; Mon, 27 Nov 2017 13:51:26 -0500 Received: from b01cxnp23034.gho.pok.ibm.com (9.57.198.29) by e13.ny.us.ibm.com (146.89.104.200) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 27 Nov 2017 13:51:23 -0500 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vARIpNcn47186118; Mon, 27 Nov 2017 18:51:23 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B7B8EAC055; Mon, 27 Nov 2017 13:52:19 -0500 (EST) Received: from collin-ThinkPad-W541.pok.ibm.com (unknown [9.56.58.42]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP id AB3EAAC03F; Mon, 27 Nov 2017 13:52:19 -0500 (EST) From: "Collin L. Walling" To: borntraeger@de.ibm.com, frankja@linux.vnet.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org Date: Mon, 27 Nov 2017 13:50:56 -0500 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1511808659-8846-1-git-send-email-walling@linux.vnet.ibm.com> References: <1511808659-8846-1-git-send-email-walling@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17112718-0008-0000-0000-000002A6EA0B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008121; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000241; SDB=6.00952059; UDB=6.00480922; IPR=6.00732140; BA=6.00005715; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018210; XFM=3.00000015; UTC=2017-11-27 18:51:25 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17112718-0009-0000-0000-0000376E2B97 Message-Id: <1511808659-8846-2-git-send-email-walling@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-11-27_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1711270253 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v1 1/4] s390-ccw: ipl structs for eckd cdl/ldl X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP ECKD DASDs have different IPL structures for CDL and LDL formats. The current Ipl1 and Ipl2 structs follow the CDL format, so we prepend "EckdCdl" to them. A new struct, EckdLdlIpl1 is introduced and contains boot info for LDL. Also introduce structs for IPL stages 1 and 1b and for disk geometry. Signed-off-by: Collin L. Walling Acked-by: Janosch Frank --- pc-bios/s390-ccw/bootmap.c | 24 ++++++++++---------- pc-bios/s390-ccw/bootmap.h | 55 +++++++++++++++++++++++++++++++++------------- 2 files changed, 53 insertions(+), 26 deletions(-) diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index 6f8e30f..5546b79 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -221,9 +221,9 @@ static void run_eckd_boot_script(block_number_t mbr_block_nr) static void ipl_eckd_cdl(void) { XEckdMbr *mbr; - Ipl2 *ipl2 = (void *)sec; + EckdCdlIpl2 *ipl2 = (void *)sec; IplVolumeLabel *vlbl = (void *)sec; - block_number_t block_nr; + block_number_t mbr_block_nr; /* we have just read the block #0 and recognized it as "IPL1" */ sclp_print("CDL\n"); @@ -231,7 +231,7 @@ static void ipl_eckd_cdl(void) memset(sec, FREE_SPACE_FILLER, sizeof(sec)); read_block(1, ipl2, "Cannot read IPL2 record at block 1"); - mbr = &ipl2->u.x.mbr; + mbr = &ipl2->mbr; IPL_assert(magic_match(mbr, ZIPL_MAGIC), "No zIPL section in IPL2 record."); IPL_assert(block_size_ok(mbr->blockptr.xeckd.bptr.size), "Bad block size in zIPL section of IPL2 record."); @@ -239,7 +239,7 @@ static void ipl_eckd_cdl(void) "Non-ECKD device type in zIPL section of IPL2 record."); /* save pointer to Boot Script */ - block_nr = eckd_block_num((void *)&(mbr->blockptr)); + mbr_block_nr = eckd_block_num((void *)&(mbr->blockptr)); memset(sec, FREE_SPACE_FILLER, sizeof(sec)); read_block(2, vlbl, "Cannot read Volume Label at block 2"); @@ -249,7 +249,7 @@ static void ipl_eckd_cdl(void) "Invalid magic of volser block"); print_volser(vlbl->f.volser); - run_eckd_boot_script(block_nr); + run_eckd_boot_script(mbr_block_nr); /* no return */ } @@ -280,8 +280,8 @@ static void print_eckd_ldl_msg(ECKD_IPL_mode_t mode) static void ipl_eckd_ldl(ECKD_IPL_mode_t mode) { - block_number_t block_nr; - BootInfo *bip = (void *)(sec + 0x70); /* BootInfo is MBR for LDL */ + block_number_t mbr_block_nr; + EckdLdlIpl1 *ipl1 = (void *)sec; if (mode != ECKD_LDL_UNLABELED) { print_eckd_ldl_msg(mode); @@ -292,15 +292,17 @@ static void ipl_eckd_ldl(ECKD_IPL_mode_t mode) memset(sec, FREE_SPACE_FILLER, sizeof(sec)); read_block(0, sec, "Cannot read block 0 to grab boot info."); if (mode == ECKD_LDL_UNLABELED) { - if (!magic_match(bip->magic, ZIPL_MAGIC)) { + if (!magic_match(ipl1->boot_info.magic, ZIPL_MAGIC)) { return; /* not applicable layout */ } sclp_print("unlabeled LDL.\n"); } - verify_boot_info(bip); + verify_boot_info(&ipl1->boot_info); + + mbr_block_nr = + eckd_block_num((void *)&(ipl1->boot_info.bp.ipl.bm_ptr.eckd.bptr)); - block_nr = eckd_block_num((void *)&(bip->bp.ipl.bm_ptr.eckd.bptr)); - run_eckd_boot_script(block_nr); + run_eckd_boot_script(mbr_block_nr); /* no return */ } diff --git a/pc-bios/s390-ccw/bootmap.h b/pc-bios/s390-ccw/bootmap.h index 4980838..a2b4695 100644 --- a/pc-bios/s390-ccw/bootmap.h +++ b/pc-bios/s390-ccw/bootmap.h @@ -226,22 +226,47 @@ typedef struct BootInfo { /* @ 0x70, record #0 */ } bp; } __attribute__ ((packed)) BootInfo; /* see also XEckdMbr */ -typedef struct Ipl1 { - unsigned char key[4]; /* == "IPL1" */ - unsigned char data[24]; -} __attribute__((packed)) Ipl1; +/* + * Structs for IPL + */ +#define STAGE2_BLK_CNT_MAX 24 /* Stage 1b can load up to 24 blocks */ -typedef struct Ipl2 { - unsigned char key[4]; /* == "IPL2" */ - union { - unsigned char data[144]; - struct { - unsigned char reserved1[92-4]; - XEckdMbr mbr; - unsigned char reserved2[144-(92-4)-sizeof(XEckdMbr)]; - } x; - } u; -} __attribute__((packed)) Ipl2; +typedef struct EckdCdlIpl1 { + uint8_t key[4]; /* == "IPL1" */ + uint8_t data[24]; +} __attribute__((packed)) EckdCdlIpl1; + +typedef struct BootEckdSeekarg { + uint16_t pad; + uint16_t cyl; + uint16_t head; + uint8_t sec; + uint8_t pad2; +} __attribute__ ((packed)) BootEckdSeekarg; + +typedef struct BootEckdStage1b { + uint8_t reserved[32 * STAGE2_BLK_CNT_MAX]; + struct BootEckdSeekarg seek[STAGE2_BLK_CNT_MAX]; + uint8_t unused[64]; +} __attribute__ ((packed)) BootEckdStage1b; + +typedef struct BootEckdStage1 { + uint8_t reserved[72]; + struct BootEckdSeekarg seek[2]; +} __attribute__ ((packed)) BootEckdStage1; + +typedef struct EckdCdlIpl2 { + uint8_t key[4]; /* == "IPL2" */ + struct BootEckdStage1 stage1; + XEckdMbr mbr; + uint8_t reserved2[24]; +} __attribute__((packed)) EckdCdlIpl2; + +typedef struct EckdLdlIpl1 { + uint8_t reserved[24]; + struct BootEckdStage1 stage1; + BootInfo boot_info; /* BootInfo is MBR for LDL */ +} __attribute__((packed)) EckdLdlIpl1; typedef struct IplVolumeLabel { unsigned char key[4]; /* == "VOL1" */