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, 408 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-realview/realview_pbx.c b/kernel/arch/arm/mach-realview/realview_pbx.c
new file mode 100644
index 000000000..9a22b8642
--- /dev/null
+++ b/kernel/arch/arm/mach-realview/realview_pbx.c
@@ -0,0 +1,408 @@
+/*
+ *  arch/arm/mach-realview/realview_pbx.c
+ *
+ *  Copyright (C) 2009 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl061.h>
+#include <linux/amba/mmci.h>
+#include <linux/amba/pl022.h>
+#include <linux/io.h>
+#include <linux/irqchip/arm-gic.h>
+#include <linux/platform_data/clk-realview.h>
+#include <linux/reboot.h>
+#include <linux/memblock.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/smp_twd.h>
+#include <asm/pgtable.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+
+#include <mach/hardware.h>
+#include <mach/board-pbx.h>
+#include <mach/irqs.h>
+
+#include "core.h"
+
+static struct map_desc realview_pbx_io_desc[] __initdata = {
+	{
+		.virtual	= IO_ADDRESS(REALVIEW_SYS_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_SYS_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= IO_ADDRESS(REALVIEW_SCTL_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_SCTL_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	},
+#ifdef CONFIG_PCI
+	{
+		.virtual	= PCIX_UNIT_BASE,
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
+		.length		= REALVIEW_PBX_PCI_BASE_SIZE,
+		.type		= MT_DEVICE,
+	},
+#endif
+#ifdef CONFIG_DEBUG_LL
+	{
+		.virtual	= IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
+		.pfn		= __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
+	},
+#endif
+};
+
+static struct map_desc realview_local_io_desc[] __initdata = {
+	{
+		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
+		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
+		.length         = SZ_4K,
+		.type           = MT_DEVICE,
+	}, {
+		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
+		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
+		.length         = SZ_4K,
+		.type           = MT_DEVICE,
+	}, {
+		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
+		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
+		.length         = SZ_8K,
+		.type           = MT_DEVICE,
+	}
+};
+
+static void __init realview_pbx_map_io(void)
+{
+	iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
+	if (core_tile_pbx11mp() || core_tile_pbxa9mp())
+		iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
+}
+
+static struct pl061_platform_data gpio0_plat_data = {
+	.gpio_base	= 0,
+};
+
+static struct pl061_platform_data gpio1_plat_data = {
+	.gpio_base	= 8,
+};
+
+static struct pl061_platform_data gpio2_plat_data = {
+	.gpio_base	= 16,
+};
+
+static struct pl022_ssp_controller ssp0_plat_data = {
+	.bus_id = 0,
+	.enable_dma = 0,
+	.num_chipselect = 1,
+};
+
+/*
+ * RealView PBXCore AMBA devices
+ */
+
+#define GPIO2_IRQ		{ IRQ_PBX_GPIO2 }
+#define GPIO3_IRQ		{ IRQ_PBX_GPIO3 }
+#define AACI_IRQ		{ IRQ_PBX_AACI }
+#define MMCI0_IRQ		{ IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
+#define KMI0_IRQ		{ IRQ_PBX_KMI0 }
+#define KMI1_IRQ		{ IRQ_PBX_KMI1 }
+#define PBX_SMC_IRQ		{ }
+#define MPMC_IRQ		{ }
+#define PBX_CLCD_IRQ		{ IRQ_PBX_CLCD }
+#define DMAC_IRQ		{ IRQ_PBX_DMAC }
+#define SCTL_IRQ		{ }
+#define PBX_WATCHDOG_IRQ	{ IRQ_PBX_WATCHDOG }
+#define PBX_GPIO0_IRQ		{ IRQ_PBX_GPIO0 }
+#define GPIO1_IRQ		{ IRQ_PBX_GPIO1 }
+#define PBX_RTC_IRQ		{ IRQ_PBX_RTC }
+#define SCI_IRQ			{ IRQ_PBX_SCI }
+#define PBX_UART0_IRQ		{ IRQ_PBX_UART0 }
+#define PBX_UART1_IRQ		{ IRQ_PBX_UART1 }
+#define PBX_UART2_IRQ		{ IRQ_PBX_UART2 }
+#define PBX_UART3_IRQ		{ IRQ_PBX_UART3 }
+#define PBX_SSP_IRQ		{ IRQ_PBX_SSP }
+
+/* FPGA Primecells */
+APB_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
+APB_DEVICE(mmc0,	"fpga:mmc0",	MMCI0,		&realview_mmc0_plat_data);
+APB_DEVICE(kmi0,	"fpga:kmi0",	KMI0,		NULL);
+APB_DEVICE(kmi1,	"fpga:kmi1",	KMI1,		NULL);
+APB_DEVICE(uart3,	"fpga:uart3",	PBX_UART3,	NULL);
+
+/* DevChip Primecells */
+AHB_DEVICE(smc,	"dev:smc",	PBX_SMC,	NULL);
+AHB_DEVICE(sctl,	"dev:sctl",	SCTL,		NULL);
+APB_DEVICE(wdog,	"dev:wdog",	PBX_WATCHDOG, 	NULL);
+APB_DEVICE(gpio0,	"dev:gpio0",	PBX_GPIO0,	&gpio0_plat_data);
+APB_DEVICE(gpio1,	"dev:gpio1",	GPIO1,		&gpio1_plat_data);
+APB_DEVICE(gpio2,	"dev:gpio2",	GPIO2,		&gpio2_plat_data);
+APB_DEVICE(rtc,		"dev:rtc",	PBX_RTC,	NULL);
+APB_DEVICE(sci0,	"dev:sci0",	SCI,		NULL);
+APB_DEVICE(uart0,	"dev:uart0",	PBX_UART0,	NULL);
+APB_DEVICE(uart1,	"dev:uart1",	PBX_UART1,	NULL);
+APB_DEVICE(uart2,	"dev:uart2",	PBX_UART2,	NULL);
+APB_DEVICE(ssp0,	"dev:ssp0",	PBX_SSP,	&ssp0_plat_data);
+
+/* Primecells on the NEC ISSP chip */
+AHB_DEVICE(clcd,	"issp:clcd",	PBX_CLCD,	&clcd_plat_data);
+AHB_DEVICE(dmac,	"issp:dmac",	DMAC,		NULL);
+
+static struct amba_device *amba_devs[] __initdata = {
+	&dmac_device,
+	&uart0_device,
+	&uart1_device,
+	&uart2_device,
+	&uart3_device,
+	&smc_device,
+	&clcd_device,
+	&sctl_device,
+	&wdog_device,
+	&gpio0_device,
+	&gpio1_device,
+	&gpio2_device,
+	&rtc_device,
+	&sci0_device,
+	&ssp0_device,
+	&aaci_device,
+	&mmc0_device,
+	&kmi0_device,
+	&kmi1_device,
+};
+
+/*
+ * RealView PB-X platform devices
+ */
+static struct resource realview_pbx_flash_resources[] = {
+	[0] = {
+		.start          = REALVIEW_PBX_FLASH0_BASE,
+		.end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start          = REALVIEW_PBX_FLASH1_BASE,
+		.end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
+		.flags          = IORESOURCE_MEM,
+	},
+};
+
+static struct resource realview_pbx_smsc911x_resources[] = {
+	[0] = {
+		.start		= REALVIEW_PBX_ETH_BASE,
+		.end		= REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_PBX_ETH,
+		.end		= IRQ_PBX_ETH,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource realview_pbx_isp1761_resources[] = {
+	[0] = {
+		.start		= REALVIEW_PBX_USB_BASE,
+		.end		= REALVIEW_PBX_USB_BASE + SZ_128K - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_PBX_USB,
+		.end		= IRQ_PBX_USB,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource pmu_resources[] = {
+	[0] = {
+		.start		= IRQ_PBX_PMU_CPU0,
+		.end		= IRQ_PBX_PMU_CPU0,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[1] = {
+		.start		= IRQ_PBX_PMU_CPU1,
+		.end		= IRQ_PBX_PMU_CPU1,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= IRQ_PBX_PMU_CPU2,
+		.end		= IRQ_PBX_PMU_CPU2,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[3] = {
+		.start		= IRQ_PBX_PMU_CPU3,
+		.end		= IRQ_PBX_PMU_CPU3,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device pmu_device = {
+	.name			= "armv7-pmu",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(pmu_resources),
+	.resource		= pmu_resources,
+};
+
+static void __init gic_init_irq(void)
+{
+	/* ARM PBX on-board GIC */
+	if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
+		gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
+			 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
+	} else {
+		gic_init(0, IRQ_PBX_GIC_START,
+			 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
+			 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
+	}
+}
+
+#ifdef CONFIG_HAVE_ARM_TWD
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
+			      REALVIEW_PBX_TILE_TWD_BASE,
+			      IRQ_LOCALTIMER);
+
+static void __init realview_pbx_twd_init(void)
+{
+	int err = twd_local_timer_register(&twd_local_timer);
+	if (err)
+		pr_err("twd_local_timer_register failed %d\n", err);
+}
+#else
+#define realview_pbx_twd_init()	do { } while(0)
+#endif
+
+static void __init realview_pbx_timer_init(void)
+{
+	timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
+	timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
+	timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
+	timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
+
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
+	realview_timer_init(IRQ_PBX_TIMER0_1);
+	realview_pbx_twd_init();
+}
+
+static void realview_pbx_fixup(struct tag *tags, char **from)
+{
+#ifdef CONFIG_SPARSEMEM
+	/*
+	 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
+	 * asm/mach/memory.h for more information).
+	 */
+
+	memblock_add(0, SZ_256M);
+	memblock_add(0x20000000, SZ_512M);
+	memblock_add(0x80000000, SZ_256M);
+#else
+	realview_fixup(tags, from);
+#endif
+}
+
+static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
+{
+	void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
+	void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
+
+	/*
+	 * To reset, we hit the on-board reset register
+	 * in the system FPGA
+	 */
+	__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
+	__raw_writel(0x00F0, reset_ctrl);
+	__raw_writel(0x00F4, reset_ctrl);
+	dsb();
+}
+
+static void __init realview_pbx_init(void)
+{
+	int i;
+
+#ifdef CONFIG_CACHE_L2X0
+	if (core_tile_pbxa9mp()) {
+		void __iomem *l2x0_base =
+			__io_address(REALVIEW_PBX_TILE_L220_BASE);
+
+		/* set RAM latencies to 1 cycle for eASIC */
+		writel(0, l2x0_base + L310_TAG_LATENCY_CTRL);
+		writel(0, l2x0_base + L310_DATA_LATENCY_CTRL);
+
+		/* 16KB way size, 8-way associativity, parity disabled
+		 * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
+		l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
+		platform_device_register(&pmu_device);
+	}
+#endif
+
+	realview_flash_register(realview_pbx_flash_resources,
+				ARRAY_SIZE(realview_pbx_flash_resources));
+	realview_eth_register(NULL, realview_pbx_smsc911x_resources);
+	platform_device_register(&realview_i2c_device);
+	platform_device_register(&realview_cf_device);
+	platform_device_register(&realview_leds_device);
+	realview_usb_register(realview_pbx_isp1761_resources);
+
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+		struct amba_device *d = amba_devs[i];
+		amba_device_register(d, &iomem_resource);
+	}
+}
+
+MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
+	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
+	.atag_offset	= 0x100,
+	.smp		= smp_ops(realview_smp_ops),
+	.fixup		= realview_pbx_fixup,
+	.map_io		= realview_pbx_map_io,
+	.init_early	= realview_init_early,
+	.init_irq	= gic_init_irq,
+	.init_time	= realview_pbx_timer_init,
+	.init_machine	= realview_pbx_init,
+#ifdef CONFIG_ZONE_DMA
+	.dma_zone_size	= SZ_256M,
+#endif
+	.restart	= realview_pbx_restart,
+MACHINE_END