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, 180 insertions, 0 deletions

diff --git a/kernel/arch/m68k/coldfire/m520x.c b/kernel/arch/m68k/coldfire/m520x.c
new file mode 100644
index 000000000..173834f25
--- /dev/null
+++ b/kernel/arch/m68k/coldfire/m520x.c
@@ -0,0 +1,180 @@
+/***************************************************************************/
+
+/*
+ *  m520x.c  -- platform support for ColdFire 520x based boards
+ *
+ *  Copyright (C) 2005,      Freescale (www.freescale.com)
+ *  Copyright (C) 2005,      Intec Automation (mike@steroidmicros.com)
+ *  Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
+ *  Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfuart.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(0, "flexbus", 2, MCF_CLK);
+DEFINE_CLK(0, "fec.0", 12, MCF_CLK);
+DEFINE_CLK(0, "edma", 17, MCF_CLK);
+DEFINE_CLK(0, "intc.0", 18, MCF_CLK);
+DEFINE_CLK(0, "iack.0", 21, MCF_CLK);
+DEFINE_CLK(0, "mcfi2c.0", 22, MCF_CLK);
+DEFINE_CLK(0, "mcfqspi.0", 23, MCF_CLK);
+DEFINE_CLK(0, "mcfuart.0", 24, MCF_BUSCLK);
+DEFINE_CLK(0, "mcfuart.1", 25, MCF_BUSCLK);
+DEFINE_CLK(0, "mcfuart.2", 26, MCF_BUSCLK);
+DEFINE_CLK(0, "mcftmr.0", 28, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.1", 29, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.2", 30, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.3", 31, MCF_CLK);
+
+DEFINE_CLK(0, "mcfpit.0", 32, MCF_CLK);
+DEFINE_CLK(0, "mcfpit.1", 33, MCF_CLK);
+DEFINE_CLK(0, "mcfeport.0", 34, MCF_CLK);
+DEFINE_CLK(0, "mcfwdt.0", 35, MCF_CLK);
+DEFINE_CLK(0, "pll.0", 36, MCF_CLK);
+DEFINE_CLK(0, "sys.0", 40, MCF_BUSCLK);
+DEFINE_CLK(0, "gpio.0", 41, MCF_BUSCLK);
+DEFINE_CLK(0, "sdram.0", 42, MCF_CLK);
+
+struct clk *mcf_clks[] = {
+	&__clk_0_2, /* flexbus */
+	&__clk_0_12, /* fec.0 */
+	&__clk_0_17, /* edma */
+	&__clk_0_18, /* intc.0 */
+	&__clk_0_21, /* iack.0 */
+	&__clk_0_22, /* mcfi2c.0 */
+	&__clk_0_23, /* mcfqspi.0 */
+	&__clk_0_24, /* mcfuart.0 */
+	&__clk_0_25, /* mcfuart.1 */
+	&__clk_0_26, /* mcfuart.2 */
+	&__clk_0_28, /* mcftmr.0 */
+	&__clk_0_29, /* mcftmr.1 */
+	&__clk_0_30, /* mcftmr.2 */
+	&__clk_0_31, /* mcftmr.3 */
+
+	&__clk_0_32, /* mcfpit.0 */
+	&__clk_0_33, /* mcfpit.1 */
+	&__clk_0_34, /* mcfeport.0 */
+	&__clk_0_35, /* mcfwdt.0 */
+	&__clk_0_36, /* pll.0 */
+	&__clk_0_40, /* sys.0 */
+	&__clk_0_41, /* gpio.0 */
+	&__clk_0_42, /* sdram.0 */
+NULL,
+};
+
+static struct clk * const enable_clks[] __initconst = {
+	&__clk_0_2, /* flexbus */
+	&__clk_0_18, /* intc.0 */
+	&__clk_0_21, /* iack.0 */
+	&__clk_0_24, /* mcfuart.0 */
+	&__clk_0_25, /* mcfuart.1 */
+	&__clk_0_26, /* mcfuart.2 */
+
+	&__clk_0_32, /* mcfpit.0 */
+	&__clk_0_33, /* mcfpit.1 */
+	&__clk_0_34, /* mcfeport.0 */
+	&__clk_0_36, /* pll.0 */
+	&__clk_0_40, /* sys.0 */
+	&__clk_0_41, /* gpio.0 */
+	&__clk_0_42, /* sdram.0 */
+};
+
+static struct clk * const disable_clks[] __initconst = {
+	&__clk_0_12, /* fec.0 */
+	&__clk_0_17, /* edma */
+	&__clk_0_22, /* mcfi2c.0 */
+	&__clk_0_23, /* mcfqspi.0 */
+	&__clk_0_28, /* mcftmr.0 */
+	&__clk_0_29, /* mcftmr.1 */
+	&__clk_0_30, /* mcftmr.2 */
+	&__clk_0_31, /* mcftmr.3 */
+	&__clk_0_35, /* mcfwdt.0 */
+};
+
+
+static void __init m520x_clk_init(void)
+{
+	unsigned i;
+
+	/* make sure these clocks are enabled */
+	for (i = 0; i < ARRAY_SIZE(enable_clks); ++i)
+		__clk_init_enabled(enable_clks[i]);
+	/* make sure these clocks are disabled */
+	for (i = 0; i < ARRAY_SIZE(disable_clks); ++i)
+		__clk_init_disabled(disable_clks[i]);
+}
+
+/***************************************************************************/
+
+static void __init m520x_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+	u16 par;
+	/* setup Port QS for QSPI with gpio CS control */
+	writeb(0x3f, MCF_GPIO_PAR_QSPI);
+	/* make U1CTS and U2RTS gpio for cs_control */
+	par = readw(MCF_GPIO_PAR_UART);
+	par &= 0x00ff;
+	writew(par, MCF_GPIO_PAR_UART);
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+static void __init m520x_uarts_init(void)
+{
+	u16 par;
+	u8 par2;
+
+	/* UART0 and UART1 GPIO pin setup */
+	par = readw(MCF_GPIO_PAR_UART);
+	par |= MCF_GPIO_PAR_UART_PAR_UTXD0 | MCF_GPIO_PAR_UART_PAR_URXD0;
+	par |= MCF_GPIO_PAR_UART_PAR_UTXD1 | MCF_GPIO_PAR_UART_PAR_URXD1;
+	writew(par, MCF_GPIO_PAR_UART);
+
+	/* UART1 GPIO pin setup */
+	par2 = readb(MCF_GPIO_PAR_FECI2C);
+	par2 &= ~0x0F;
+	par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
+		MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
+	writeb(par2, MCF_GPIO_PAR_FECI2C);
+}
+
+/***************************************************************************/
+
+static void __init m520x_fec_init(void)
+{
+	u8 v;
+
+	/* Set multi-function pins to ethernet mode */
+	v = readb(MCF_GPIO_PAR_FEC);
+	writeb(v | 0xf0, MCF_GPIO_PAR_FEC);
+
+	v = readb(MCF_GPIO_PAR_FECI2C);
+	writeb(v | 0x0f, MCF_GPIO_PAR_FECI2C);
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+	mach_sched_init = hw_timer_init;
+	m520x_clk_init();
+	m520x_uarts_init();
+	m520x_fec_init();
+	m520x_qspi_init();
+}
+
+/***************************************************************************/