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 <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

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 <yunhong.jiang@intel.com>

1 files changed, 249 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/sysdev/fsl_soc.c b/kernel/arch/powerpc/sysdev/fsl_soc.c
new file mode 100644
index 000000000..99269c041
--- /dev/null
+++ b/kernel/arch/powerpc/sysdev/fsl_soc.c
@@ -0,0 +1,249 @@
+/*
+ * FSL SoC setup code
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * 2006 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug@ru.mvista.com>
+ *
+ * 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 <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/major.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/export.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/phy.h>
+#include <linux/spi/spi.h>
+#include <linux/fsl_devices.h>
+#include <linux/fs_enet_pd.h>
+#include <linux/fs_uart_pd.h>
+
+#include <linux/atomic.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/time.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <sysdev/fsl_soc.h>
+#include <mm/mmu_decl.h>
+#include <asm/cpm2.h>
+#include <asm/fsl_hcalls.h>	/* For the Freescale hypervisor */
+
+extern void init_fcc_ioports(struct fs_platform_info*);
+extern void init_fec_ioports(struct fs_platform_info*);
+extern void init_smc_ioports(struct fs_uart_platform_info*);
+static phys_addr_t immrbase = -1;
+
+phys_addr_t get_immrbase(void)
+{
+	struct device_node *soc;
+
+	if (immrbase != -1)
+		return immrbase;
+
+	soc = of_find_node_by_type(NULL, "soc");
+	if (soc) {
+		int size;
+		u32 naddr;
+		const __be32 *prop = of_get_property(soc, "#address-cells", &size);
+
+		if (prop && size == 4)
+			naddr = be32_to_cpup(prop);
+		else
+			naddr = 2;
+
+		prop = of_get_property(soc, "ranges", &size);
+		if (prop)
+			immrbase = of_translate_address(soc, prop + naddr);
+
+		of_node_put(soc);
+	}
+
+	return immrbase;
+}
+
+EXPORT_SYMBOL(get_immrbase);
+
+static u32 sysfreq = -1;
+
+u32 fsl_get_sys_freq(void)
+{
+	struct device_node *soc;
+	const u32 *prop;
+	int size;
+
+	if (sysfreq != -1)
+		return sysfreq;
+
+	soc = of_find_node_by_type(NULL, "soc");
+	if (!soc)
+		return -1;
+
+	prop = of_get_property(soc, "clock-frequency", &size);
+	if (!prop || size != sizeof(*prop) || *prop == 0)
+		prop = of_get_property(soc, "bus-frequency", &size);
+
+	if (prop && size == sizeof(*prop))
+		sysfreq = *prop;
+
+	of_node_put(soc);
+	return sysfreq;
+}
+EXPORT_SYMBOL(fsl_get_sys_freq);
+
+#if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
+
+static u32 brgfreq = -1;
+
+u32 get_brgfreq(void)
+{
+	struct device_node *node;
+	const unsigned int *prop;
+	int size;
+
+	if (brgfreq != -1)
+		return brgfreq;
+
+	node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
+	if (node) {
+		prop = of_get_property(node, "clock-frequency", &size);
+		if (prop && size == 4)
+			brgfreq = *prop;
+
+		of_node_put(node);
+		return brgfreq;
+	}
+
+	/* Legacy device binding -- will go away when no users are left. */
+	node = of_find_node_by_type(NULL, "cpm");
+	if (!node)
+		node = of_find_compatible_node(NULL, NULL, "fsl,qe");
+	if (!node)
+		node = of_find_node_by_type(NULL, "qe");
+
+	if (node) {
+		prop = of_get_property(node, "brg-frequency", &size);
+		if (prop && size == 4)
+			brgfreq = *prop;
+
+		if (brgfreq == -1 || brgfreq == 0) {
+			prop = of_get_property(node, "bus-frequency", &size);
+			if (prop && size == 4)
+				brgfreq = *prop / 2;
+		}
+		of_node_put(node);
+	}
+
+	return brgfreq;
+}
+
+EXPORT_SYMBOL(get_brgfreq);
+
+static u32 fs_baudrate = -1;
+
+u32 get_baudrate(void)
+{
+	struct device_node *node;
+
+	if (fs_baudrate != -1)
+		return fs_baudrate;
+
+	node = of_find_node_by_type(NULL, "serial");
+	if (node) {
+		int size;
+		const unsigned int *prop = of_get_property(node,
+				"current-speed", &size);
+
+		if (prop)
+			fs_baudrate = *prop;
+		of_node_put(node);
+	}
+
+	return fs_baudrate;
+}
+
+EXPORT_SYMBOL(get_baudrate);
+#endif /* CONFIG_CPM2 */
+
+#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
+static __be32 __iomem *rstcr;
+
+static int __init setup_rstcr(void)
+{
+	struct device_node *np;
+
+	for_each_node_by_name(np, "global-utilities") {
+		if ((of_get_property(np, "fsl,has-rstcr", NULL))) {
+			rstcr = of_iomap(np, 0) + 0xb0;
+			if (!rstcr)
+				printk (KERN_ERR "Error: reset control "
+						"register not mapped!\n");
+			break;
+		}
+	}
+
+	if (!rstcr && ppc_md.restart == fsl_rstcr_restart)
+		printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
+
+	of_node_put(np);
+
+	return 0;
+}
+
+arch_initcall(setup_rstcr);
+
+void fsl_rstcr_restart(char *cmd)
+{
+	local_irq_disable();
+	if (rstcr)
+		/* set reset control register */
+		out_be32(rstcr, 0x2);	/* HRESET_REQ */
+
+	while (1) ;
+}
+#endif
+
+#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
+struct platform_diu_data_ops diu_ops;
+EXPORT_SYMBOL(diu_ops);
+#endif
+
+#ifdef CONFIG_EPAPR_PARAVIRT
+/*
+ * Restart the current partition
+ *
+ * This function should be assigned to the ppc_md.restart function pointer,
+ * to initiate a partition restart when we're running under the Freescale
+ * hypervisor.
+ */
+void fsl_hv_restart(char *cmd)
+{
+	pr_info("hv restart\n");
+	fh_partition_restart(-1);
+}
+
+/*
+ * Halt the current partition
+ *
+ * This function should be assigned to the pm_power_off and ppc_md.halt
+ * function pointers, to shut down the partition when we're running under
+ * the Freescale hypervisor.
+ */
+void fsl_hv_halt(void)
+{
+	pr_info("hv exit\n");
+	fh_partition_stop(-1);
+}
+#endif