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e764f460c4
The binary Linux kernel image is built to be loaded to memory address 0x0 but the first 64 kbyte contain an IPL header that is not used for disk IPL. zIPL strips away this IPL header when writing IPL records to disk, loads the remaining data to memory address 0x10000 and uses the memory area below that for its own boot loader code. The Secure Boot firmware feature checks the integrity of an installed image during IPL using a checksum that was generated for the full image. Since the checksum becomes invalid if the IPL header is removed, zIPL must be changed to write the full image to disk. This patch modifies the zIPL logic to no longer strip away the IPL header. Instead the full image is loaded to a higher memory address and relocated by the stage 3 boot loader code to its final location. Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* s390-tools/zipl/include/zipl.h
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* zSeries Initial Program Loader tool.
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*
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* Copyright IBM Corp. 2001, 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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*/
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#ifndef ZIPL_H
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#define ZIPL_H
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#include <stdint.h>
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#include "lib/zt_common.h"
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#define ZIPL_MAGIC "zIPL"
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#define ZIPL_MAGIC_SIZE 4
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#define DISK_LAYOUT_ID 0x00000001
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#define ZIPL_STAGE2_LOAD_ADDRESS 0x2000
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#define ZIPL_STAGE3_ENTRY_ADDRESS 0xa050LL
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#define DEFAULT_IMAGE_ADDRESS 0x10000LL
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#define KDUMP_IMAGE_ADDRESS 0x10010LL
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#define DEFAULT_STAGE3_ADDRESS 0xa000LL
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#define MINIMUM_ADDRESS 0x10000LL
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#define ADDRESS_LIMIT 0x80000000LL
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#define ADDRESS_LIMIT_KDUMP 0x2000000UL /* HSA size: 32 MiB */
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#define UNSPECIFIED_ADDRESS -1ULL
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#define MAXIMUM_PARMLINE_SIZE 0x380
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#define MAXIMUM_PHYSICAL_BLOCKSIZE 0x1000
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#define PSW_ADDRESS_MASK 0x000000007fffffffLL
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#define PSW_LOAD 0x0008000080000000LL
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#define PSW_DISABLED_WAIT 0x000a000000000000LL
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#define BOOTMAP_FILENAME "bootmap"
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#define BOOTMAP_TEMPLATE_FILENAME "bootmap_temp.XXXXXX"
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#define DEFAULTBOOT_SECTION "defaultboot"
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#define ZIPL_CONF_VAR "ZIPLCONF"
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#define ZIPL_DEFAULT_CONF "/etc/zipl.conf"
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#define ZIPL_DEFAULT_BLSDIR "/boot/loader/entries"
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#define MENU_DEFAULT_PROMPT 0
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#define MENU_DEFAULT_TIMEOUT 0
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#define MAX_DUMP_VOLUMES 32
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/* Internal component load address type */
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typedef uint64_t address_t;
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/* Type for address calculations */
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#define VOID_ADD(ptr, offset) ((void *) (((unsigned long) ptr) + \
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((unsigned long) offset)))
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/* Call a function depending on the value of dry_run and return either the
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* resulting return code or 0. */
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#define DRY_RUN_FUNC(x) (dry_run ? 0 : (x))
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#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
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#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
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extern int verbose;
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extern int interactive;
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extern int dry_run;
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#endif /* not ZIPL_H */
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