treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
[sfrench/cifs-2.6.git] / arch / arm / mach-hisi / hisilicon.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * (Hisilicon's SoC based) flattened device tree enabled machine
4  *
5  * Copyright (c) 2012-2013 Hisilicon Ltd.
6  * Copyright (c) 2012-2013 Linaro Ltd.
7  *
8  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
9 */
10
11 #include <linux/clocksource.h>
12 #include <linux/irqchip.h>
13
14 #include <asm/mach/arch.h>
15 #include <asm/mach/map.h>
16
17 #define HI3620_SYSCTRL_PHYS_BASE                0xfc802000
18 #define HI3620_SYSCTRL_VIRT_BASE                0xfe802000
19
20 /*
21  * This table is only for optimization. Since ioremap() could always share
22  * the same mapping if it's defined as static IO mapping.
23  *
24  * Without this table, system could also work. The cost is some virtual address
25  * spaces wasted since ioremap() may be called multi times for the same
26  * IO space.
27  */
28 static struct map_desc hi3620_io_desc[] __initdata = {
29         {
30                 /* sysctrl */
31                 .pfn            = __phys_to_pfn(HI3620_SYSCTRL_PHYS_BASE),
32                 .virtual        = HI3620_SYSCTRL_VIRT_BASE,
33                 .length         = 0x1000,
34                 .type           = MT_DEVICE,
35         },
36 };
37
38 static void __init hi3620_map_io(void)
39 {
40         debug_ll_io_init();
41         iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
42 }
43
44 static const char *const hi3xxx_compat[] __initconst = {
45         "hisilicon,hi3620-hi4511",
46         NULL,
47 };
48
49 DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
50         .map_io         = hi3620_map_io,
51         .dt_compat      = hi3xxx_compat,
52 MACHINE_END