blob: f695811c9b6d1f73d63cf7dd611fa535f23deda3 [file] [log] [blame]
Bryan Wu97adb222014-06-24 11:45:29 +09001/*
2 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17/* Tegra vpr routines */
18
19#include <common.h>
20#include <asm/io.h>
21#include <asm/arch/tegra.h>
22#include <asm/arch/mc.h>
23
24/* Configures VPR. Right now, all we do is turn it off. */
25void config_vpr(void)
26{
27 struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
28
29 /* Turn VPR off */
30 writel(0, &mc->mc_video_protect_size_mb);
31 writel(TEGRA_MC_VIDEO_PROTECT_REG_WRITE_ACCESS_DISABLED,
32 &mc->mc_video_protect_reg_ctrl);
33 /* read back to ensure the write went through */
34 readl(&mc->mc_video_protect_reg_ctrl);
35}