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https://github.com/ibm-s390-linux/s390-tools.git
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ac0ac48f6f
Update zipl DASD standalone dumpers for single-volume, multi-volume and FBA to drop the sets of zero pages when dumping memory to disk. Thus, all continuous sets of zero-megabytes in the memory are dropped during the dump stage. Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
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* zipl - zSeries Initial Program Loader tool
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*
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* Common dump functions
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*
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* Copyright IBM Corp. 2013, 2018
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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 STAGE2DUMP_H
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#define STAGE2DUMP_H
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#include "libc.h"
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#include "s390.h"
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#define IPL_SC *((struct subchannel_id *) &S390_lowcore.subchannel_id)
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#define ROUND_DOWN(x, a) ((x) & ~((typeof(x))(a) - 1))
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#define IS_ALIGNED(x, a) ~((x) & ((typeof(x))(a) - 1))
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/*
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* zipl parameters passed at tail of dump tools
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*/
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struct stage2dump_parm_tail {
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char reserved[6];
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uint16_t mvdump_force;
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uint64_t mem_upper_limit;
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} __packed;
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extern struct stage2dump_parm_tail parm_tail
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__attribute__ ((section(".stage2dump.tail")));
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/*
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* S390 dump format defines
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*/
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#define DF_S390_MAGIC 0xa8190173618f23fdULL
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#define DF_S390_MAGIC_EXT 0xa8190173618f23feULL
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#define DF_S390_HDR_SIZE 0x1000
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#define DF_S390_EM_SIZE 16
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#define DF_S390_EM_MAGIC 0x44554d505f454e44ULL
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#define DF_S390_CPU_MAX 512
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#define DF_S390_MAGIC_BLK_ECKD 3
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/*
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* Architecture of dumped system
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*/
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enum df_s390_arch {
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DF_S390_ARCH_32 = 1,
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DF_S390_ARCH_64 = 2,
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};
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/*
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* s390 dump header format
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*/
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struct df_s390_hdr {
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uint64_t magic; /* 0x000 */
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uint32_t version; /* 0x008 */
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uint32_t hdr_size; /* 0x00c */
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uint32_t dump_level; /* 0x010 */
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uint32_t page_size; /* 0x014 */
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uint64_t mem_size; /* 0x018 */
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uint64_t mem_start; /* 0x020 */
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uint64_t mem_end; /* 0x028 */
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uint32_t num_pages; /* 0x030 */
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uint32_t pad; /* 0x034 */
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uint64_t tod; /* 0x038 */
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uint64_t cpu_id; /* 0x040 */
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uint32_t arch; /* 0x048 */
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uint32_t volnr; /* 0x04c */
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uint32_t build_arch; /* 0x050 */
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uint64_t mem_size_real; /* 0x054 */
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uint8_t mvdump; /* 0x05c */
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uint16_t cpu_cnt; /* 0x05d */
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uint16_t real_cpu_cnt; /* 0x05f */
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uint8_t end_pad1[0x200-0x061]; /* 0x061 */
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uint64_t mvdump_sign; /* 0x200 */
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uint64_t mvdump_zipl_time; /* 0x208 */
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uint8_t end_pad2[0x800-0x210]; /* 0x210 */
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uint32_t lc_vec[DF_S390_CPU_MAX]; /* 0x800 */
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} __packed __aligned(16);
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/*
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* End marker: Should be at the end of every valid s390 crash dump
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*/
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struct df_s390_em {
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uint64_t magic;
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uint64_t tod;
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} __packed __aligned(16);
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/*
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* Dump segment header
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*/
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struct df_s390_dump_segm_hdr {
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uint64_t start;
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uint64_t len;
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uint64_t stop_marker;
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};
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/*
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* Linker script defined symbols
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*/
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extern char __eckd2mvdump_parm_start[];
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extern char __stage2_desc[];
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/*
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* Dump common globals
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*/
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extern struct df_s390_hdr *dump_hdr;
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extern unsigned long total_dump_size;
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/*
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* Common functions
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*/
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void create_ida_list(unsigned long *list, int len, unsigned long addr,
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unsigned long zero_page);
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void init_progress_print(void);
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void progress_print(unsigned long addr);
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void df_s390_em_page_init(unsigned long page);
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void pgm_check_handler(void);
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int is_zero_mb(unsigned long addr);
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unsigned long find_dump_segment(unsigned long start, unsigned long end,
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unsigned long max_len,
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struct df_s390_dump_segm_hdr *dump_segm);
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/*
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* Dump tool backend functions
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*/
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void dt_device_parm_setup(void);
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void dt_device_enable(void);
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void dt_dump_mem(void);
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#endif /* STAGE2DUMP_H */
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