90 lines
2.5 KiB
ArmAsm
90 lines
2.5 KiB
ArmAsm
/*-
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* Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <machine/asm.h>
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#define VPECONF0_MVP (1 << 1)
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.set noreorder
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#ifdef SMP
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/*
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* This function must be implemented in assembly because it is called early
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* in AP boot without a valid stack.
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*/
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LEAF(platform_processor_id)
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.set push
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.set mips32r2
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mfc0 v0, $15, 1
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jr ra
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andi v0, 0x1f
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.set pop
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END(platform_processor_id)
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LEAF(enable_mvp)
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.set push
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.set mips32r2
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.set noat
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li t2, (VPECONF0_MVP)
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move $1, t2
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jr ra
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.word 0x41810000 | (1 << 11) | 2 # mttc0 t2, $1, 2
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.set pop
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END(enable_mvp)
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/*
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* Called on APs to wait until they are told to launch.
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*/
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LEAF(malta_ap_wait)
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jal platform_processor_id
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nop
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1:
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ll t0, malta_ap_boot
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bne v0, t0, 1b
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nop
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move t0, zero
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sc t0, malta_ap_boot
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beqz t0, 1b
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nop
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j mpentry
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nop
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END(malta_ap_wait)
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#endif
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