Initial file dump from open source releaseHEADmaster

1 files changed, 114 insertions, 0 deletions

diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
new file mode 100644
index 00000000..5bfe7035
--- /dev/null
+++ b/arch/arm/mach-zynq/common.c
@@ -0,0 +1,114 @@
+/*
+ * This file contains common code that is intended to be used across
+ * boards so that it's not replicated.
+ *
+ *  Copyright (C) 2011 Xilinx
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/cpumask.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/clk/zynq.h>
+#include <linux/clocksource.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/irqchip.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/smp_scu.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "common.h"
+
+void __iomem *zynq_scu_base;
+
+static struct of_device_id zynq_of_bus_ids[] __initdata = {
+	{ .compatible = "simple-bus", },
+	{}
+};
+
+/**
+ * zynq_init_machine - System specific initialization, intended to be
+ *		       called from board specific initialization.
+ */
+static void __init zynq_init_machine(void)
+{
+	/*
+	 * 64KB way size, 8-way associativity, parity disabled
+	 */
+	l2x0_of_init(0x02060000, 0xF0F0FFFF);
+
+	of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
+}
+
+static void __init zynq_timer_init(void)
+{
+	zynq_slcr_init();
+	clocksource_of_init();
+}
+
+static struct map_desc zynq_cortex_a9_scu_map __initdata = {
+	.length	= SZ_256,
+	.type	= MT_DEVICE,
+};
+
+static void __init zynq_scu_map_io(void)
+{
+	unsigned long base;
+
+	base = scu_a9_get_base();
+	zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base);
+	/* Expected address is in vmalloc area that's why simple assign here */
+	zynq_cortex_a9_scu_map.virtual = base;
+	iotable_init(&zynq_cortex_a9_scu_map, 1);
+	zynq_scu_base = (void __iomem *)base;
+	BUG_ON(!zynq_scu_base);
+}
+
+/**
+ * zynq_map_io - Create memory mappings needed for early I/O.
+ */
+static void __init zynq_map_io(void)
+{
+	debug_ll_io_init();
+	zynq_scu_map_io();
+}
+
+static void zynq_system_reset(char mode, const char *cmd)
+{
+	zynq_slcr_system_reset();
+}
+
+static const char * const zynq_dt_match[] = {
+	"xlnx,zynq-zc702",
+	"xlnx,zynq-7000",
+	NULL
+};
+
+MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
+	.smp		= smp_ops(zynq_smp_ops),
+	.map_io		= zynq_map_io,
+	.init_irq	= irqchip_init,
+	.init_machine	= zynq_init_machine,
+	.init_time	= zynq_timer_init,
+	.dt_compat	= zynq_dt_match,
+	.restart	= zynq_system_reset,
+MACHINE_END