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powerpc/boot: Add mfdcrx

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Needed for currituck support.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
This commit is contained in:
Tony Breeds 2011-11-30 21:39:22 +00:00 committed by Josh Boyer
parent e32a03290c
commit 075bcf5879
1 changed files with 6 additions and 0 deletions
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6
arch/powerpc/boot/dcr.h
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@ -9,6 +9,12 @@
}) })
#define mtdcr(rn, val) \ #define mtdcr(rn, val) \
asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val)) asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val))
#define mfdcrx(rn) \
({ \
unsigned long rval; \
asm volatile("mfdcrx %0,%1" : "=r"(rval) : "r"(rn)); \
rval; \
})
/* 440GP/440GX SDRAM controller DCRs */ /* 440GP/440GX SDRAM controller DCRs */
#define DCRN_SDRAM0_CFGADDR 0x010 #define DCRN_SDRAM0_CFGADDR 0x010