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8bf5f8d0e2
The zipl internal loader adds a variable BOOT_IMAGE= to the commandline so that it is visible in the operating system which menu entry has been chosen. This entry was overwritten by the stage3 parameter page. Fix by re-arranging the internal memory layout and putting the command line extra param, which contains the BOOT_IMAGE entry, at 0xe000. This location is available because less than one page is used for the stack. Fixes: https://github.com/ibm-s390-tools/s390-tools/issues/67 Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
44 lines
981 B
C
44 lines
981 B
C
/*
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* zipl - zSeries Initial Program Loader tool
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*
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* Bootmenu Subroutines
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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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#ifndef MENU_H
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#define MENU_H
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#include "stage2.h"
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/* address of extra command line */
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#define COMMAND_LINE_EXTRA 0xE000
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/* max command line length */
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#define COMMAND_LINE_SIZE 896
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#define BOOT_MENU_ENTRIES 63
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#define LINE_LENGTH 80
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#define PARAM_SIZE 8
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#define TEXT_OFFSET 4
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#define NUMBER_FOUND 0
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#define PRINT_PROMPT 1
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#define NOTHING_FOUND 2
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struct boot_stage2_params {
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uint16_t flag;
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uint16_t timeout;
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uint16_t banner;
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uint16_t config[BOOT_MENU_ENTRIES];
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uint64_t config_kdump;
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} __packed;
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extern struct boot_stage2_params __stage2_params;
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int menu();
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#endif /* MENU_H */
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