Initial import

1 files changed, 30 insertions, 0 deletions

diff --git a/arch/powerpc/boot/reg.h b/arch/powerpc/boot/reg.h
new file mode 100644
index 000000000..9c2c9978e
--- /dev/null
+++ b/arch/powerpc/boot/reg.h
@@ -0,0 +1,30 @@
+#ifndef _PPC_BOOT_REG_H
+#define _PPC_BOOT_REG_H
+/*
+ * Copyright 2007 Davud Gibson, IBM Corporation.
+ *
+ * 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.
+ */
+
+static inline u32 mfpvr(void)
+{
+	u32 pvr;
+	asm volatile ("mfpvr	%0" : "=r"(pvr));
+	return pvr;
+}
+
+#define __stringify_1(x)	#x
+#define __stringify(x)		__stringify_1(x)
+
+#define mfspr(rn)	({unsigned long rval; \
+			asm volatile("mfspr %0," __stringify(rn) \
+				: "=r" (rval)); rval; })
+#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
+
+register void *__stack_pointer asm("r1");
+#define get_sp()	(__stack_pointer)
+
+#endif	/* _PPC_BOOT_REG_H */