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Diffstat (limited to 'purgatory/arch/ppc64/hvCall.S')
| -rw-r--r-- | purgatory/arch/ppc64/hvCall.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/purgatory/arch/ppc64/hvCall.S b/purgatory/arch/ppc64/hvCall.S new file mode 100644 index 0000000..a96c489 --- /dev/null +++ b/purgatory/arch/ppc64/hvCall.S @@ -0,0 +1,27 @@ +/* + * This file contains the generic function to perform a call to the + * pSeries LPAR hypervisor. + * + * Taken from linux/arch/powerpc/platforms/pseries/hvCall.S + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ppc64_asm.h" + +#define HVSC .long 0x44000022 +.text + .machine ppc64 +.globl DOTSYM(plpar_hcall_norets) +DOTSYM(plpar_hcall_norets): + or 6,6,6 # medium low priority + mfcr 0 + stw 0,8(1) + + HVSC /* invoke the hypervisor */ + + lwz 0,8(1) + mtcrf 0xff,0 + blr /* return r3 = status */ |