1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* 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/of_irq.h>
#include <linux/of_platform.h>
#include <linux/of.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/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/zynq_soc.h>
#include "common.h"
static struct of_device_id zynq_of_bus_ids[] __initdata = {
{ .compatible = "simple-bus", },
{}
};
/**
* xilinx_init_machine() - System specific initialization, intended to be
* called from board specific initialization.
*/
static void __init xilinx_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 struct of_device_id irq_match[] __initdata = {
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
{ }
};
/**
* xilinx_irq_init() - Interrupt controller initialization for the GIC.
*/
static void __init xilinx_irq_init(void)
{
of_irq_init(irq_match);
}
/* The minimum devices needed to be mapped before the VM system is up and
* running include the GIC, UART and Timer Counter.
*/
static struct map_desc io_desc[] __initdata = {
{
.virtual = TTC0_VIRT,
.pfn = __phys_to_pfn(TTC0_PHYS),
.length = TTC0_SIZE,
.type = MT_DEVICE,
}, {
.virtual = SCU_PERIPH_VIRT,
.pfn = __phys_to_pfn(SCU_PERIPH_PHYS),
.length = SCU_PERIPH_SIZE,
.type = MT_DEVICE,
},
#ifdef CONFIG_DEBUG_LL
{
.virtual = UART0_VIRT,
.pfn = __phys_to_pfn(UART0_PHYS),
.length = UART0_SIZE,
.type = MT_DEVICE,
},
#endif
};
static void __init xilinx_zynq_timer_init(void)
{
xttcpss_timer_init();
}
/*
* Instantiate and initialize the system timer structure
*/
static struct sys_timer xttcpss_sys_timer = {
.init = xilinx_zynq_timer_init,
};
/**
* xilinx_map_io() - Create memory mappings needed for early I/O.
*/
static void __init xilinx_map_io(void)
{
iotable_init(io_desc, ARRAY_SIZE(io_desc));
}
static const char *xilinx_dt_match[] = {
"xlnx,zynq-ep107",
NULL
};
MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
.map_io = xilinx_map_io,
.init_irq = xilinx_irq_init,
.handle_irq = gic_handle_irq,
.init_machine = xilinx_init_machine,
.timer = &xttcpss_sys_timer,
.dt_compat = xilinx_dt_match,
MACHINE_END
|
