1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
*/
#include <linux/export.h>
#include <linux/clk.h>
#include <linux/of_platform.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <lantiq.h>
#include "prom.h"
#include "clk.h"
/* access to the ebu needs to be locked between different drivers */
DEFINE_SPINLOCK(ebu_lock);
EXPORT_SYMBOL_GPL(ebu_lock);
/*
* this struct is filled by the soc specific detection code and holds
* information about the specific soc type, revision and name
*/
static struct ltq_soc_info soc_info;
unsigned int ltq_get_soc_type(void)
{
return soc_info.type;
}
EXPORT_SYMBOL(ltq_get_soc_type);
const char *get_system_type(void)
{
return soc_info.sys_type;
}
void prom_free_prom_memory(void)
{
}
static void __init prom_init_cmdline(void)
{
int argc = fw_arg0;
char **argv = (char **) KSEG1ADDR(fw_arg1);
int i;
arcs_cmdline[0] = '\0';
for (i = 0; i < argc; i++) {
char *p = (char *) KSEG1ADDR(argv[i]);
if (CPHYSADDR(p) && *p) {
strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
}
}
}
void __init plat_mem_setup(void)
{
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
set_io_port_base((unsigned long) KSEG1);
/*
* Load the builtin devicetree. This causes the chosen node to be
* parsed resulting in our memory appearing
*/
__dt_setup_arch(&__dtb_start);
}
void __init prom_init(void)
{
/* call the soc specific detetcion code and get it to fill soc_info */
ltq_soc_detect(&soc_info);
snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
soc_info.name, soc_info.rev_type);
soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
pr_info("SoC: %s\n", soc_info.sys_type);
prom_init_cmdline();
#if defined(CONFIG_MIPS_MT_SMP)
if (register_vsmp_smp_ops())
panic("failed to register_vsmp_smp_ops()");
#endif
}
int __init plat_of_setup(void)
{
static struct of_device_id of_ids[3];
if (!of_have_populated_dt())
panic("device tree not present");
strncpy(of_ids[0].compatible, soc_info.compatible,
sizeof(of_ids[0].compatible));
strncpy(of_ids[1].compatible, "simple-bus",
sizeof(of_ids[1].compatible));
return of_platform_bus_probe(NULL, of_ids, NULL);
}
arch_initcall(plat_of_setup);
|
