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> | |
0f586fbf JC |
22 | #include <linux/clk/zynq.h> |
23 | #include <linux/of_address.h> | |
b85a3ef4 JL |
24 | #include <linux/of_irq.h> |
25 | #include <linux/of_platform.h> | |
3d64b449 | 26 | #include <linux/of.h> |
b85a3ef4 | 27 | |
3d64b449 | 28 | #include <asm/mach/arch.h> |
b85a3ef4 | 29 | #include <asm/mach/map.h> |
03e07595 | 30 | #include <asm/mach/time.h> |
3d64b449 | 31 | #include <asm/mach-types.h> |
b85a3ef4 | 32 | #include <asm/page.h> |
9a45eb69 | 33 | #include <asm/pgtable.h> |
b85a3ef4 JL |
34 | #include <asm/hardware/gic.h> |
35 | #include <asm/hardware/cache-l2x0.h> | |
36 | ||
b85a3ef4 JL |
37 | #include "common.h" |
38 | ||
39 | static struct of_device_id zynq_of_bus_ids[] __initdata = { | |
40 | { .compatible = "simple-bus", }, | |
41 | {} | |
42 | }; | |
43 | ||
44 | /** | |
45 | * xilinx_init_machine() - System specific initialization, intended to be | |
46 | * called from board specific initialization. | |
47 | */ | |
3d64b449 | 48 | static void __init xilinx_init_machine(void) |
b85a3ef4 | 49 | { |
b85a3ef4 JL |
50 | /* |
51 | * 64KB way size, 8-way associativity, parity disabled | |
52 | */ | |
0fcfdbca | 53 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
b85a3ef4 JL |
54 | |
55 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); | |
56 | } | |
57 | ||
f447ed2d JC |
58 | static struct of_device_id irq_match[] __initdata = { |
59 | { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, | |
60 | { } | |
61 | }; | |
62 | ||
b85a3ef4 JL |
63 | /** |
64 | * xilinx_irq_init() - Interrupt controller initialization for the GIC. | |
65 | */ | |
3d64b449 | 66 | static void __init xilinx_irq_init(void) |
b85a3ef4 | 67 | { |
f447ed2d | 68 | of_irq_init(irq_match); |
b85a3ef4 JL |
69 | } |
70 | ||
9a45eb69 JC |
71 | #define SCU_PERIPH_PHYS 0xF8F00000 |
72 | #define SCU_PERIPH_SIZE SZ_8K | |
73 | #define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE) | |
b85a3ef4 | 74 | |
385f02b1 JC |
75 | static struct map_desc scu_desc __initdata = { |
76 | .virtual = SCU_PERIPH_VIRT, | |
77 | .pfn = __phys_to_pfn(SCU_PERIPH_PHYS), | |
78 | .length = SCU_PERIPH_SIZE, | |
79 | .type = MT_DEVICE, | |
b85a3ef4 JL |
80 | }; |
81 | ||
03e07595 JC |
82 | static void __init xilinx_zynq_timer_init(void) |
83 | { | |
0f586fbf JC |
84 | struct device_node *np; |
85 | void __iomem *slcr; | |
86 | ||
87 | np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr"); | |
88 | slcr = of_iomap(np, 0); | |
89 | WARN_ON(!slcr); | |
90 | ||
91 | xilinx_zynq_clocks_init(slcr); | |
92 | ||
03e07595 JC |
93 | xttcpss_timer_init(); |
94 | } | |
95 | ||
b85a3ef4 JL |
96 | /** |
97 | * xilinx_map_io() - Create memory mappings needed for early I/O. | |
98 | */ | |
3d64b449 | 99 | static void __init xilinx_map_io(void) |
b85a3ef4 | 100 | { |
385f02b1 JC |
101 | debug_ll_io_init(); |
102 | iotable_init(&scu_desc, 1); | |
b85a3ef4 | 103 | } |
3d64b449 AB |
104 | |
105 | static const char *xilinx_dt_match[] = { | |
e06f1a9e JC |
106 | "xlnx,zynq-zc702", |
107 | "xlnx,zynq-7000", | |
3d64b449 AB |
108 | NULL |
109 | }; | |
110 | ||
111 | MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") | |
112 | .map_io = xilinx_map_io, | |
113 | .init_irq = xilinx_irq_init, | |
368b8e25 | 114 | .handle_irq = gic_handle_irq, |
3d64b449 | 115 | .init_machine = xilinx_init_machine, |
6bb27d73 | 116 | .init_time = xilinx_zynq_timer_init, |
3d64b449 AB |
117 | .dt_compat = xilinx_dt_match, |
118 | MACHINE_END |