diff options
Diffstat (limited to 'arch/arm/mach-zynq/common.c')
-rw-r--r-- | arch/arm/mach-zynq/common.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c new file mode 100644 index 00000000000..b3ac5c2e12d --- /dev/null +++ b/arch/arm/mach-zynq/common.c | |||
@@ -0,0 +1,102 @@ | |||
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> | ||
24 | |||
25 | #include <asm/mach/map.h> | ||
26 | #include <asm/page.h> | ||
27 | #include <asm/hardware/gic.h> | ||
28 | #include <asm/hardware/cache-l2x0.h> | ||
29 | |||
30 | #include <mach/zynq_soc.h> | ||
31 | #include <mach/clkdev.h> | ||
32 | #include "common.h" | ||
33 | |||
34 | static struct of_device_id zynq_of_bus_ids[] __initdata = { | ||
35 | { .compatible = "simple-bus", }, | ||
36 | {} | ||
37 | }; | ||
38 | |||
39 | /** | ||
40 | * xilinx_init_machine() - System specific initialization, intended to be | ||
41 | * called from board specific initialization. | ||
42 | */ | ||
43 | void __init xilinx_init_machine(void) | ||
44 | { | ||
45 | #ifdef CONFIG_CACHE_L2X0 | ||
46 | /* | ||
47 | * 64KB way size, 8-way associativity, parity disabled | ||
48 | */ | ||
49 | l2x0_init(PL310_L2CC_BASE, 0x02060000, 0xF0F0FFFF); | ||
50 | #endif | ||
51 | |||
52 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); | ||
53 | } | ||
54 | |||
55 | /** | ||
56 | * xilinx_irq_init() - Interrupt controller initialization for the GIC. | ||
57 | */ | ||
58 | void __init xilinx_irq_init(void) | ||
59 | { | ||
60 | gic_init(0, 29, SCU_GIC_DIST_BASE, SCU_GIC_CPU_BASE); | ||
61 | } | ||
62 | |||
63 | /* The minimum devices needed to be mapped before the VM system is up and | ||
64 | * running include the GIC, UART and Timer Counter. | ||
65 | */ | ||
66 | |||
67 | static struct map_desc io_desc[] __initdata = { | ||
68 | { | ||
69 | .virtual = TTC0_VIRT, | ||
70 | .pfn = __phys_to_pfn(TTC0_PHYS), | ||
71 | .length = SZ_4K, | ||
72 | .type = MT_DEVICE, | ||
73 | }, { | ||
74 | .virtual = SCU_PERIPH_VIRT, | ||
75 | .pfn = __phys_to_pfn(SCU_PERIPH_PHYS), | ||
76 | .length = SZ_8K, | ||
77 | .type = MT_DEVICE, | ||
78 | }, { | ||
79 | .virtual = PL310_L2CC_VIRT, | ||
80 | .pfn = __phys_to_pfn(PL310_L2CC_PHYS), | ||
81 | .length = SZ_4K, | ||
82 | .type = MT_DEVICE, | ||
83 | }, | ||
84 | |||
85 | #ifdef CONFIG_DEBUG_LL | ||
86 | { | ||
87 | .virtual = UART0_VIRT, | ||
88 | .pfn = __phys_to_pfn(UART0_PHYS), | ||
89 | .length = SZ_4K, | ||
90 | .type = MT_DEVICE, | ||
91 | }, | ||
92 | #endif | ||
93 | |||
94 | }; | ||
95 | |||
96 | /** | ||
97 | * xilinx_map_io() - Create memory mappings needed for early I/O. | ||
98 | */ | ||
99 | void __init xilinx_map_io(void) | ||
100 | { | ||
101 | iotable_init(io_desc, ARRAY_SIZE(io_desc)); | ||
102 | } | ||