Commit | Line | Data |
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b85a3ef4 JL |
1 | /* |
2 | * This file contains common code that is intended to be used across | |
3 | * boards so that it's not replicated. | |
4 | * | |
5 | * Copyright (C) 2011 Xilinx | |
6 | * | |
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. | |
10 | * | |
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. | |
15 | */ | |
16 | ||
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/of_irq.h> | |
23 | #include <linux/of_platform.h> | |
3d64b449 | 24 | #include <linux/of.h> |
b85a3ef4 | 25 | |
3d64b449 | 26 | #include <asm/mach/arch.h> |
b85a3ef4 | 27 | #include <asm/mach/map.h> |
03e07595 | 28 | #include <asm/mach/time.h> |
3d64b449 | 29 | #include <asm/mach-types.h> |
b85a3ef4 JL |
30 | #include <asm/page.h> |
31 | #include <asm/hardware/gic.h> | |
32 | #include <asm/hardware/cache-l2x0.h> | |
33 | ||
34 | #include <mach/zynq_soc.h> | |
b85a3ef4 JL |
35 | #include "common.h" |
36 | ||
37 | static struct of_device_id zynq_of_bus_ids[] __initdata = { | |
38 | { .compatible = "simple-bus", }, | |
39 | {} | |
40 | }; | |
41 | ||
42 | /** | |
43 | * xilinx_init_machine() - System specific initialization, intended to be | |
44 | * called from board specific initialization. | |
45 | */ | |
3d64b449 | 46 | static void __init xilinx_init_machine(void) |
b85a3ef4 | 47 | { |
b85a3ef4 JL |
48 | /* |
49 | * 64KB way size, 8-way associativity, parity disabled | |
50 | */ | |
0fcfdbca | 51 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
b85a3ef4 JL |
52 | |
53 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); | |
54 | } | |
55 | ||
f447ed2d JC |
56 | static struct of_device_id irq_match[] __initdata = { |
57 | { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, | |
58 | { } | |
59 | }; | |
60 | ||
b85a3ef4 JL |
61 | /** |
62 | * xilinx_irq_init() - Interrupt controller initialization for the GIC. | |
63 | */ | |
3d64b449 | 64 | static void __init xilinx_irq_init(void) |
b85a3ef4 | 65 | { |
f447ed2d | 66 | of_irq_init(irq_match); |
b85a3ef4 JL |
67 | } |
68 | ||
69 | /* The minimum devices needed to be mapped before the VM system is up and | |
70 | * running include the GIC, UART and Timer Counter. | |
71 | */ | |
72 | ||
73 | static struct map_desc io_desc[] __initdata = { | |
74 | { | |
75 | .virtual = TTC0_VIRT, | |
76 | .pfn = __phys_to_pfn(TTC0_PHYS), | |
f5800776 | 77 | .length = TTC0_SIZE, |
b85a3ef4 JL |
78 | .type = MT_DEVICE, |
79 | }, { | |
80 | .virtual = SCU_PERIPH_VIRT, | |
81 | .pfn = __phys_to_pfn(SCU_PERIPH_PHYS), | |
f5800776 | 82 | .length = SCU_PERIPH_SIZE, |
b85a3ef4 | 83 | .type = MT_DEVICE, |
b85a3ef4 JL |
84 | }, |
85 | ||
86 | #ifdef CONFIG_DEBUG_LL | |
87 | { | |
aaf5e0be NB |
88 | .virtual = LL_UART_VADDR, |
89 | .pfn = __phys_to_pfn(LL_UART_PADDR), | |
90 | .length = UART_SIZE, | |
b85a3ef4 JL |
91 | .type = MT_DEVICE, |
92 | }, | |
93 | #endif | |
94 | ||
95 | }; | |
96 | ||
03e07595 JC |
97 | static void __init xilinx_zynq_timer_init(void) |
98 | { | |
99 | xttcpss_timer_init(); | |
100 | } | |
101 | ||
102 | /* | |
103 | * Instantiate and initialize the system timer structure | |
104 | */ | |
105 | static struct sys_timer xttcpss_sys_timer = { | |
106 | .init = xilinx_zynq_timer_init, | |
107 | }; | |
108 | ||
b85a3ef4 JL |
109 | /** |
110 | * xilinx_map_io() - Create memory mappings needed for early I/O. | |
111 | */ | |
3d64b449 | 112 | static void __init xilinx_map_io(void) |
b85a3ef4 JL |
113 | { |
114 | iotable_init(io_desc, ARRAY_SIZE(io_desc)); | |
115 | } | |
3d64b449 AB |
116 | |
117 | static const char *xilinx_dt_match[] = { | |
e06f1a9e JC |
118 | "xlnx,zynq-zc702", |
119 | "xlnx,zynq-7000", | |
3d64b449 AB |
120 | NULL |
121 | }; | |
122 | ||
123 | MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") | |
124 | .map_io = xilinx_map_io, | |
125 | .init_irq = xilinx_irq_init, | |
368b8e25 | 126 | .handle_irq = gic_handle_irq, |
3d64b449 AB |
127 | .init_machine = xilinx_init_machine, |
128 | .timer = &xttcpss_sys_timer, | |
129 | .dt_compat = xilinx_dt_match, | |
130 | MACHINE_END |