linux-libre/arch/powerpc/boot/epapr-wrapper.c

extern void epapr_platform_init(unsigned long r3, unsigned long r4,
				unsigned long r5, unsigned long r6,
				unsigned long r7);

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
		   unsigned long r6, unsigned long r7)
{
	epapr_platform_init(r3, r4, r5, r6, r7);
}