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/*- * Copyright (c) 2009 Neelkanth Natu * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: release/9.1.0/sys/mips/sibyte/sb_asm.S 205675 2010-03-26 07:15:27Z neel $ */ #include <machine/asm.h> #include <machine/cpuregs.h> .set mips64 .set noat .set noreorder #ifdef SMP /* * This function must be implemented in assembly because it is called early * in AP boot without a valid stack. * * This cpu number is available in bits 25 to 27 of the coprocessor 0 PRID * register. This is not documented in the BCM1250 user manual but can be * gleaned from the CFE source code - see sb1250_altcpu.S */ LEAF(platform_processor_id) mfc0 v0, MIPS_COP_0_PRID srl v0, v0, 25 jr ra and v0, v0, 7 END(platform_processor_id) #endif /* SMP */