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https://github.com/ibm-s390-linux/s390-tools.git
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d978fc6141
This fixes an error when genprotimg is compiled with clang and the
sanitizers address and undefined behaviour enabled.
pv/pv_ipib.c:47:33: runtime error: member access within misaligned address 0x62100000a100 for type 'IplParameterBlock' (aka 'struct ipl_parameter_block'), which requires 4096 byte alignment
0x62100000a100: note: pointer points here
01 00 00 45 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
^
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior pv/pv_ipib.c:47:33 in
This change should be no problem as genprotimg is the only user.
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
192 lines
3.8 KiB
C
192 lines
3.8 KiB
C
/*
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* IPL related definitions
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*
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* Copyright IBM Corp. 2020
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef IPL_H
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#define IPL_H
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#include "lib/zt_common.h"
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#include "s390.h"
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#define IPL_FLAG_SECURE 0x40
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#define IPL_RB_COMPONENT_FLAG_SIGNED 0x80
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#define IPL_RB_COMPONENT_FLAG_VERIFIED 0x40
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#define IPL_MAX_SUPPORTED_VERSION 0
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#define IPL_PARM_BLOCK_VERSION 0x1
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/* IPL Types */
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#define IPL_TYPE_PV 0x5
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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/* IPL Parameter List header */
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struct ipl_pl_hdr {
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uint32_t len;
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uint8_t flags;
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uint8_t reserved1[2];
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uint8_t version;
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} __packed;
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/* IPL Parameter Block header */
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struct ipl_pb_hdr {
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uint32_t len;
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uint8_t pbt;
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} __packed;
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/* IPL Parameter Block 0 with common fields */
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struct ipl_pb0_common {
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uint32_t len;
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uint8_t pbt;
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uint8_t flags;
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uint8_t reserved1[2];
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uint8_t loadparm[8];
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uint8_t reserved2[84];
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} __packed;
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/* IPL Parameter Block 0 for FCP */
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struct ipl_pb0_fcp {
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uint32_t len;
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uint8_t pbt;
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uint8_t reserved1[3];
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uint8_t loadparm[8];
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uint8_t reserved2[304];
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uint8_t opt;
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uint8_t reserved3[3];
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uint8_t cssid;
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uint8_t reserved4[1];
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uint8_t devno;
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uint8_t reserved5[4];
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uint64_t wwpn;
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uint64_t lun;
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uint32_t bootprog;
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uint8_t reserved6[12];
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uint64_t br_lba;
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uint32_t scp_data_len;
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uint8_t reserved7[260];
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uint8_t scp_data[];
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} __packed;
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/* IPL Parameter Block 0 for CCW */
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struct ipl_pb0_ccw {
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uint32_t len;
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uint8_t pbt;
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uint8_t flags;
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uint8_t reserved1[2];
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uint8_t loadparm[8];
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uint8_t reserved2[84];
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uint16_t reserved3 : 13;
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uint8_t ssid : 3;
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uint16_t devno;
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uint8_t vm_flags;
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uint8_t reserved4[3];
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uint32_t vm_parm_len;
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uint8_t nss_name[8];
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uint8_t vm_parm[64];
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uint8_t reserved5[8];
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} __packed;
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/* Structure must not have any padding */
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struct ipl_pb0_pv_comp {
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uint64_t tweak_pref;
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uint64_t addr;
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uint64_t len;
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};
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STATIC_ASSERT(sizeof(struct ipl_pb0_pv_comp) == 3 * 8)
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/* IPL Parameter Block 0 for PV */
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struct ipl_pb0_pv {
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uint32_t len;
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uint8_t pbt;
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uint8_t reserved1[3];
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uint8_t loadparm[8];
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uint8_t reserved2[84];
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uint8_t reserved3[3];
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uint8_t version;
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uint8_t reserved4[4];
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uint32_t num_comp;
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uint64_t pv_hdr_addr;
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uint64_t pv_hdr_size;
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struct ipl_pb0_pv_comp components[];
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} __packed;
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struct ipl_parameter_block {
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struct ipl_pl_hdr hdr;
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union {
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struct ipl_pb_hdr pb0_hdr;
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struct ipl_pb0_common common;
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struct ipl_pb0_fcp fcp;
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struct ipl_pb0_ccw ccw;
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struct ipl_pb0_pv pv;
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char raw[PAGE_SIZE - sizeof(struct ipl_pl_hdr)];
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};
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} __packed;
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/* IPL Report List header */
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struct ipl_rl_hdr {
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uint32_t len;
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uint8_t flags;
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uint8_t reserved1[2];
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uint8_t version;
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uint8_t reserved2[8];
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} __packed;
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/* IPL Report Block header */
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/* Structure must not have any padding */
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struct ipl_rb_hdr {
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uint32_t len;
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uint8_t rbt;
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uint8_t reserved1[11];
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};
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STATIC_ASSERT(sizeof(struct ipl_rb_hdr) == 4 + 1 + 11)
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/* IPL Report Block types */
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enum ipl_rbt {
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IPL_RBT_CERTIFICATES = 1,
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IPL_RBT_COMPONENTS = 2,
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};
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/* IPL Report Block for the certificate list */
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struct ipl_rb_certificate_entry {
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uint64_t addr;
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uint64_t len;
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} __packed;
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struct ipl_rb_certificates {
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uint32_t len;
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uint8_t rbt;
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uint8_t reserved1[11];
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struct ipl_rb_certificate_entry entries[];
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} __packed;
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/* IPL Report Block for the component list */
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struct ipl_rb_component_entry {
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uint64_t addr;
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uint64_t len;
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uint8_t flags;
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uint8_t reserved1[5];
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uint16_t certificate_index;
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uint8_t reserved2[8];
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};
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/* Structure must not have any padding */
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struct ipl_rb_components {
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uint32_t len;
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uint8_t rbt;
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uint8_t reserved1[11];
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struct ipl_rb_component_entry entries[];
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};
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STATIC_ASSERT(sizeof(struct ipl_rb_components) == 4 + 1 + 11)
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#endif /* __ASSEMBLER__ */
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#endif /* IPL_H */
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