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https://github.com/ibm-s390-linux/s390-tools.git
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ae27066c15
Use the `tpi_info` struct definition, similar to the Linux kernel, in the lowcore struct. This change allows us to use simple assignments instead of using casts. Additionally, there is the advantage that the lowcore definition from the s390-tools now looks more similar to the lowcore definition used by the Linux kernel. Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
133 lines
3.1 KiB
C
133 lines
3.1 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 "boot/s390.h"
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#define IPL_SC S390_lowcore.tpi_info.schid
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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 __section(.stage2dump.tail) parm_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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