1/*- 2 * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#include <machine/asm.h> 30 31 .set noreorder 32 33#ifdef SMP 34/* 35 * This function must be implemented in assembly because it is called early 36 * in AP boot without a valid stack. 37 */ 38LEAF(platform_processor_id) 39 .set push 40 .set mips32r2 41 jr ra 42 rdhwr v0, $0 43 .set pop 44END(platform_processor_id) 45 46/* 47 * Called on APs to wait until they are told to launch. 48 */ 49LEAF(octeon_ap_wait) 50 jal platform_processor_id 51 nop 52 531: lld t0, octeon_ap_boot 54 bne v0, t0, 1b 55 nop 56 57 move t0, zero 58 scd t0, octeon_ap_boot 59 60 beqz t0, 1b 61 nop 62 63 j mpentry 64 nop 65END(octeon_ap_wait) 66#endif 67