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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> |
b85a3ef4 | 28 | |
3d64b449 | 29 | #include <asm/mach/arch.h> |
b85a3ef4 | 30 | #include <asm/mach/map.h> |
03e07595 | 31 | #include <asm/mach/time.h> |
3d64b449 | 32 | #include <asm/mach-types.h> |
b85a3ef4 | 33 | #include <asm/page.h> |
9a45eb69 | 34 | #include <asm/pgtable.h> |
732078c3 | 35 | #include <asm/smp_scu.h> |
b85a3ef4 JL |
36 | #include <asm/hardware/cache-l2x0.h> |
37 | ||
b85a3ef4 JL |
38 | #include "common.h" |
39 | ||
732078c3 MS |
40 | void __iomem *zynq_scu_base; |
41 | ||
3e8ceca6 DL |
42 | static struct platform_device zynq_cpuidle_device = { |
43 | .name = "cpuidle-zynq", | |
44 | }; | |
45 | ||
b85a3ef4 | 46 | /** |
889faa88 MS |
47 | * zynq_init_machine - System specific initialization, intended to be |
48 | * called from board specific initialization. | |
b85a3ef4 | 49 | */ |
889faa88 | 50 | static void __init zynq_init_machine(void) |
b85a3ef4 | 51 | { |
b85a3ef4 JL |
52 | /* |
53 | * 64KB way size, 8-way associativity, parity disabled | |
54 | */ | |
0fcfdbca | 55 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
b85a3ef4 | 56 | |
f4d5d7b7 | 57 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
3e8ceca6 DL |
58 | |
59 | platform_device_register(&zynq_cpuidle_device); | |
b85a3ef4 JL |
60 | } |
61 | ||
889faa88 | 62 | static void __init zynq_timer_init(void) |
03e07595 | 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 | 86 | /** |
889faa88 | 87 | * zynq_map_io - Create memory mappings needed for early I/O. |
b85a3ef4 | 88 | */ |
889faa88 | 89 | static void __init zynq_map_io(void) |
b85a3ef4 | 90 | { |
385f02b1 | 91 | debug_ll_io_init(); |
732078c3 | 92 | zynq_scu_map_io(); |
b85a3ef4 | 93 | } |
3d64b449 | 94 | |
fe08bf9f | 95 | static void zynq_system_reset(enum reboot_mode mode, const char *cmd) |
96790f0a MS |
96 | { |
97 | zynq_slcr_system_reset(); | |
98 | } | |
99 | ||
889faa88 | 100 | static const char * const zynq_dt_match[] = { |
e06f1a9e | 101 | "xlnx,zynq-7000", |
3d64b449 AB |
102 | NULL |
103 | }; | |
104 | ||
514a5908 | 105 | DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") |
aa7eb2bb | 106 | .smp = smp_ops(zynq_smp_ops), |
889faa88 | 107 | .map_io = zynq_map_io, |
889faa88 MS |
108 | .init_machine = zynq_init_machine, |
109 | .init_time = zynq_timer_init, | |
110 | .dt_compat = zynq_dt_match, | |
96790f0a | 111 | .restart = zynq_system_reset, |
3d64b449 | 112 | MACHINE_END |