From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-imx/cpu-imx25.c | 51 ++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 kernel/arch/arm/mach-imx/cpu-imx25.c (limited to 'kernel/arch/arm/mach-imx/cpu-imx25.c') diff --git a/kernel/arch/arm/mach-imx/cpu-imx25.c b/kernel/arch/arm/mach-imx/cpu-imx25.c new file mode 100644 index 000000000..d0ad67e80 --- /dev/null +++ b/kernel/arch/arm/mach-imx/cpu-imx25.c @@ -0,0 +1,51 @@ +/* + * MX25 CPU type detection + * + * Copyright (c) 2009 Daniel Mack + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include +#include +#include + +#include "iim.h" +#include "hardware.h" + +static int mx25_cpu_rev = -1; + +static int mx25_read_cpu_rev(void) +{ + u32 rev; + void __iomem *iim_base; + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx25-iim"); + iim_base = of_iomap(np, 0); + BUG_ON(!iim_base); + rev = readl(iim_base + MXC_IIMSREV); + iounmap(iim_base); + + switch (rev) { + case 0x00: + return IMX_CHIP_REVISION_1_0; + case 0x01: + return IMX_CHIP_REVISION_1_1; + default: + return IMX_CHIP_REVISION_UNKNOWN; + } +} + +int mx25_revision(void) +{ + if (mx25_cpu_rev == -1) + mx25_cpu_rev = mx25_read_cpu_rev(); + + return mx25_cpu_rev; +} +EXPORT_SYMBOL(mx25_revision); -- cgit 1.2.3-korg