2 * This file contains common code that is intended to be used across
3 * boards so that it's not replicated.
5 * Copyright (C) 2011 Xilinx
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/cpumask.h>
20 #include <linux/platform_device.h>
21 #include <linux/clk.h>
22 #include <linux/clk/zynq.h>
23 #include <linux/clocksource.h>
24 #include <linux/of_address.h>
25 #include <linux/of_irq.h>
26 #include <linux/of_platform.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/time.h>
32 #include <asm/mach-types.h>
34 #include <asm/pgtable.h>
35 #include <asm/smp_scu.h>
36 #include <asm/hardware/cache-l2x0.h>
40 void __iomem *zynq_scu_base;
42 static struct of_device_id zynq_of_bus_ids[] __initdata = {
43 { .compatible = "simple-bus", },
47 static struct platform_device zynq_cpuidle_device = {
48 .name = "cpuidle-zynq",
52 * zynq_init_machine - System specific initialization, intended to be
53 * called from board specific initialization.
55 static void __init zynq_init_machine(void)
58 * 64KB way size, 8-way associativity, parity disabled
60 l2x0_of_init(0x02060000, 0xF0F0FFFF);
62 of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
64 platform_device_register(&zynq_cpuidle_device);
67 static void __init zynq_timer_init(void)
70 clocksource_of_init();
73 static struct map_desc zynq_cortex_a9_scu_map __initdata = {
78 static void __init zynq_scu_map_io(void)
82 base = scu_a9_get_base();
83 zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base);
84 /* Expected address is in vmalloc area that's why simple assign here */
85 zynq_cortex_a9_scu_map.virtual = base;
86 iotable_init(&zynq_cortex_a9_scu_map, 1);
87 zynq_scu_base = (void __iomem *)base;
88 BUG_ON(!zynq_scu_base);
92 * zynq_map_io - Create memory mappings needed for early I/O.
94 static void __init zynq_map_io(void)
100 static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
102 zynq_slcr_system_reset();
105 static const char * const zynq_dt_match[] = {
110 DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
111 .smp = smp_ops(zynq_smp_ops),
112 .map_io = zynq_map_io,
113 .init_machine = zynq_init_machine,
114 .init_time = zynq_timer_init,
115 .dt_compat = zynq_dt_match,
116 .restart = zynq_system_reset,