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/of_address.h>
24 #include <linux/of_irq.h>
25 #include <linux/of_platform.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/time.h>
31 #include <asm/mach-types.h>
33 #include <asm/pgtable.h>
34 #include <asm/hardware/cache-l2x0.h>
38 static struct of_device_id zynq_of_bus_ids[] __initdata = {
39 { .compatible = "simple-bus", },
44 * xilinx_init_machine() - System specific initialization, intended to be
45 * called from board specific initialization.
47 static void __init xilinx_init_machine(void)
50 * 64KB way size, 8-way associativity, parity disabled
52 l2x0_of_init(0x02060000, 0xF0F0FFFF);
54 of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
57 #define SCU_PERIPH_PHYS 0xF8F00000
58 #define SCU_PERIPH_SIZE SZ_8K
59 #define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE)
61 static struct map_desc scu_desc __initdata = {
62 .virtual = SCU_PERIPH_VIRT,
63 .pfn = __phys_to_pfn(SCU_PERIPH_PHYS),
64 .length = SCU_PERIPH_SIZE,
68 static void __init xilinx_zynq_timer_init(void)
70 struct device_node *np;
73 np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr");
74 slcr = of_iomap(np, 0);
77 xilinx_zynq_clocks_init(slcr);
83 * Instantiate and initialize the system timer structure
85 static struct sys_timer xttcpss_sys_timer = {
86 .init = xilinx_zynq_timer_init,
90 * xilinx_map_io() - Create memory mappings needed for early I/O.
92 static void __init xilinx_map_io(void)
95 iotable_init(&scu_desc, 1);
98 static const char *xilinx_dt_match[] = {
104 MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
105 .map_io = xilinx_map_io,
106 .init_irq = irqchip_init,
107 .init_machine = xilinx_init_machine,
108 .timer = &xttcpss_sys_timer,
109 .dt_compat = xilinx_dt_match,