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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-09-24 00:25:02 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-24 00:25:02 -0400 |
| commit | c1d9728ecc5b560465df3c0c0d3b3825c2710b40 (patch) | |
| tree | d0abb5c923a7a3eca2d4b2c3e1964bf484870909 /arch/s390/kernel/reipl_diag.c | |
| parent | 165415f700b0c77fa1f8db6198f48582639adf78 (diff) | |
| parent | 87e807b6c461bbd449496a4c3ab78ab164a4ba97 (diff) | |
| download | kernel_samsung_crespo-c1d9728ecc5b560465df3c0c0d3b3825c2710b40.zip kernel_samsung_crespo-c1d9728ecc5b560465df3c0c0d3b3825c2710b40.tar.gz kernel_samsung_crespo-c1d9728ecc5b560465df3c0c0d3b3825c2710b40.tar.bz2 | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'arch/s390/kernel/reipl_diag.c')
| -rw-r--r-- | arch/s390/kernel/reipl_diag.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/s390/kernel/reipl_diag.c b/arch/s390/kernel/reipl_diag.c new file mode 100644 index 0000000..83cb42b --- /dev/null +++ b/arch/s390/kernel/reipl_diag.c @@ -0,0 +1,39 @@ +/* + * This file contains the implementation of the + * Linux re-IPL support + * + * (C) Copyright IBM Corp. 2005 + * + * Author(s): Volker Sameske (sameske@de.ibm.com) + * + */ + +#include <linux/kernel.h> + +static unsigned int reipl_diag_rc1; +static unsigned int reipl_diag_rc2; + +/* + * re-IPL the system using the last used IPL parameters + */ +void reipl_diag(void) +{ + asm volatile ( + " la %%r4,0\n" + " la %%r5,0\n" + " diag %%r4,%2,0x308\n" + "0:\n" + " st %%r4,%0\n" + " st %%r5,%1\n" + ".section __ex_table,\"a\"\n" +#ifdef __s390x__ + " .align 8\n" + " .quad 0b, 0b\n" +#else + " .align 4\n" + " .long 0b, 0b\n" +#endif + ".previous\n" + : "=m" (reipl_diag_rc1), "=m" (reipl_diag_rc2) + : "d" (3) : "cc", "4", "5" ); +} |