mirror of
https://github.com/ibm-s390-linux/s390-tools.git
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b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* zipl - zSeries Initial Program Loader tool
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*
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* Stand-alone kdump support (stage 2)
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*
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* Copyright IBM Corp. 2013, 2017
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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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#include "error.h"
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#include "kdump.h"
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#include "libc.h"
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#include "menu.h"
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#include "stage2.h"
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static struct os_info **lc_os_info = ((struct os_info **)&S390_lowcore.os_info);
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/*
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* Copy crashkernel memory from [0, crash size] to
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* [crash base, crash base + crash size] if config_nr specifies a
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* kdump boot menu entry.
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*
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* Parameter:
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* Config number (starts with 1)
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*/
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void kdump_stage2(unsigned long config_nr)
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{
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struct os_info *os_info = *lc_os_info;
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unsigned long crash_size;
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void *crash_base;
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if (!(__stage2_params.config_kdump & (0x1 << config_nr)))
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return;
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os_info_check(os_info);
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/* Copy crashkernel memory */
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crash_base = (void *) os_info->crashkernel_addr;
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crash_size = os_info->crashkernel_size;
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memcpy(crash_base, NULL, crash_size);
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/*
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* Relocate OS info pointer if necessary (needed for stage 3)
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* If OS info is smaller than crash size then add crash base
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*/
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if (__pa(os_info) >= crash_size)
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return;
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*lc_os_info = (void *) __pa(os_info) + __pa(crash_base);
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}
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