xref: /OK3568_Linux_fs/u-boot/arch/arm/mach-zynq/lowlevel_init.S (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun/*
2*4882a593Smuzhiyun * Copyright (C) 2013 Xilinx, Inc. All rights reserved.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier:	GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun#include <asm-offsets.h>
8*4882a593Smuzhiyun#include <config.h>
9*4882a593Smuzhiyun#include <linux/linkage.h>
10*4882a593Smuzhiyun
11*4882a593SmuzhiyunENTRY(lowlevel_init)
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun	/* Enable the the VFP */
14*4882a593Smuzhiyun	mrc	p15, 0, r1, c1, c0, 2
15*4882a593Smuzhiyun	orr	r1, r1, #(0x3 << 20)
16*4882a593Smuzhiyun	orr	r1, r1, #(0x3 << 20)
17*4882a593Smuzhiyun	mcr	p15, 0, r1, c1, c0, 2
18*4882a593Smuzhiyun	isb
19*4882a593Smuzhiyun	fmrx	r1, FPEXC
20*4882a593Smuzhiyun	orr	r1,r1, #(1<<30)
21*4882a593Smuzhiyun	fmxr	FPEXC, r1
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun	/* Move back to caller */
24*4882a593Smuzhiyun	mov	pc, lr
25*4882a593Smuzhiyun
26*4882a593SmuzhiyunENDPROC(lowlevel_init)
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