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 | 22 | #include <linux/clk/zynq.h> |
e932900a | 23 | #include <linux/clocksource.h> |
0f586fbf | 24 | #include <linux/of_address.h> |
b85a3ef4 JL |
25 | #include <linux/of_irq.h> |
26 | #include <linux/of_platform.h> | |
3d64b449 | 27 | #include <linux/of.h> |
c0675617 | 28 | #include <linux/irqchip.h> |
b85a3ef4 | 29 | |
3d64b449 | 30 | #include <asm/mach/arch.h> |
b85a3ef4 | 31 | #include <asm/mach/map.h> |
03e07595 | 32 | #include <asm/mach/time.h> |
3d64b449 | 33 | #include <asm/mach-types.h> |
b85a3ef4 | 34 | #include <asm/page.h> |
9a45eb69 | 35 | #include <asm/pgtable.h> |
732078c3 | 36 | #include <asm/smp_scu.h> |
b85a3ef4 JL |
37 | #include <asm/hardware/cache-l2x0.h> |
38 | ||
b85a3ef4 JL |
39 | #include "common.h" |
40 | ||
732078c3 MS |
41 | void __iomem *zynq_scu_base; |
42 | ||
b85a3ef4 JL |
43 | static struct of_device_id zynq_of_bus_ids[] __initdata = { |
44 | { .compatible = "simple-bus", }, | |
45 | {} | |
46 | }; | |
47 | ||
48 | /** | |
49 | * xilinx_init_machine() - System specific initialization, intended to be | |
50 | * called from board specific initialization. | |
51 | */ | |
3d64b449 | 52 | static void __init xilinx_init_machine(void) |
b85a3ef4 | 53 | { |
b85a3ef4 JL |
54 | /* |
55 | * 64KB way size, 8-way associativity, parity disabled | |
56 | */ | |
0fcfdbca | 57 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
b85a3ef4 JL |
58 | |
59 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); | |
60 | } | |
61 | ||
03e07595 JC |
62 | static void __init xilinx_zynq_timer_init(void) |
63 | { | |
64b889b3 | 64 | zynq_slcr_init(); |
c5263bb8 | 65 | clocksource_of_init(); |
03e07595 JC |
66 | } |
67 | ||
732078c3 MS |
68 | static struct map_desc zynq_cortex_a9_scu_map __initdata = { |
69 | .length = SZ_256, | |
70 | .type = MT_DEVICE, | |
71 | }; | |
72 | ||
73 | static void __init zynq_scu_map_io(void) | |
74 | { | |
75 | unsigned long base; | |
76 | ||
77 | base = scu_a9_get_base(); | |
78 | zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base); | |
79 | /* Expected address is in vmalloc area that's why simple assign here */ | |
80 | zynq_cortex_a9_scu_map.virtual = base; | |
81 | iotable_init(&zynq_cortex_a9_scu_map, 1); | |
82 | zynq_scu_base = (void __iomem *)base; | |
83 | BUG_ON(!zynq_scu_base); | |
84 | } | |
85 | ||
b85a3ef4 JL |
86 | /** |
87 | * xilinx_map_io() - Create memory mappings needed for early I/O. | |
88 | */ | |
3d64b449 | 89 | static void __init xilinx_map_io(void) |
b85a3ef4 | 90 | { |
385f02b1 | 91 | debug_ll_io_init(); |
732078c3 | 92 | zynq_scu_map_io(); |
b85a3ef4 | 93 | } |
3d64b449 | 94 | |
96790f0a MS |
95 | static void zynq_system_reset(char mode, const char *cmd) |
96 | { | |
97 | zynq_slcr_system_reset(); | |
98 | } | |
99 | ||
3d64b449 | 100 | static const char *xilinx_dt_match[] = { |
e06f1a9e JC |
101 | "xlnx,zynq-zc702", |
102 | "xlnx,zynq-7000", | |
3d64b449 AB |
103 | NULL |
104 | }; | |
105 | ||
106 | MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") | |
107 | .map_io = xilinx_map_io, | |
0529e315 | 108 | .init_irq = irqchip_init, |
3d64b449 | 109 | .init_machine = xilinx_init_machine, |
6bb27d73 | 110 | .init_time = xilinx_zynq_timer_init, |
3d64b449 | 111 | .dt_compat = xilinx_dt_match, |
96790f0a | 112 | .restart = zynq_system_reset, |
3d64b449 | 113 | MACHINE_END |