c782268be8
Add code to support the re-IPL method using diagnose 0x308. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
40 lines
871 B
C
40 lines
871 B
C
/*
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* This file contains the implementation of the
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* Linux re-IPL support
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*
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* (C) Copyright IBM Corp. 2005
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*
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* Author(s): Volker Sameske (sameske@de.ibm.com)
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*
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*/
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#include <linux/kernel.h>
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static unsigned int reipl_diag_rc1;
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static unsigned int reipl_diag_rc2;
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/*
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* re-IPL the system using the last used IPL parameters
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*/
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void reipl_diag(void)
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{
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asm volatile (
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" la %%r4,0\n"
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" la %%r5,0\n"
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" diag %%r4,%2,0x308\n"
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"0:\n"
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" st %%r4,%0\n"
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" st %%r5,%1\n"
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".section __ex_table,\"a\"\n"
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#ifdef __s390x__
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" .align 8\n"
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" .quad 0b, 0b\n"
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#else
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" .align 4\n"
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" .long 0b, 0b\n"
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#endif
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".previous\n"
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: "=m" (reipl_diag_rc1), "=m" (reipl_diag_rc2)
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: "d" (3) : "cc", "4", "5" );
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}
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