Signed-off-by: Tony Breeds <t...@bakeyournoodle.com>
---
arch/powerpc/boot/dcr.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/boot/dcr.h b/arch/powerpc/boot/dcr.h
index 645a7c9..51b5893 100644
--- a/arch/powerpc/boot/dcr.h
+++ b/arch/powerpc/boot/dcr.h
@@ -9,6 +9,12 @@
})
#define mtdcr(rn, val) \
asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val))
+#define mfdcrx(rn) \
+ ({ \
+ unsigned long rval; \
+ asm volatile("mfdcrx %0,%1" : "=r"(rval) : "g"(rn)); \
+ rval; \
+ })
/* 440GP/440GX SDRAM controller DCRs */
#define DCRN_SDRAM0_CFGADDR 0x010
--
1.7.6.4
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