2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License version 2 as published
4 * by the Free Software Foundation.
6 * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
9 #include <linux/export.h>
10 #include <linux/clk.h>
11 #include <linux/bootmem.h>
12 #include <linux/of_platform.h>
13 #include <linux/of_fdt.h>
15 #include <asm/bootinfo.h>
23 /* access to the ebu needs to be locked between different drivers */
24 DEFINE_SPINLOCK(ebu_lock
);
25 EXPORT_SYMBOL_GPL(ebu_lock
);
28 * this struct is filled by the soc specific detection code and holds
29 * information about the specific soc type, revision and name
31 static struct ltq_soc_info soc_info
;
33 const char *get_system_type(void)
35 return soc_info
.sys_type
;
38 void prom_free_prom_memory(void)
42 static void __init
prom_init_cmdline(void)
45 char **argv
= (char **) KSEG1ADDR(fw_arg1
);
48 arcs_cmdline
[0] = '\0';
50 for (i
= 0; i
< argc
; i
++) {
51 char *p
= (char *) KSEG1ADDR(argv
[i
]);
53 if (CPHYSADDR(p
) && *p
) {
54 strlcat(arcs_cmdline
, p
, sizeof(arcs_cmdline
));
55 strlcat(arcs_cmdline
, " ", sizeof(arcs_cmdline
));
60 void __init
plat_mem_setup(void)
62 ioport_resource
.start
= IOPORT_RESOURCE_START
;
63 ioport_resource
.end
= IOPORT_RESOURCE_END
;
64 iomem_resource
.start
= IOMEM_RESOURCE_START
;
65 iomem_resource
.end
= IOMEM_RESOURCE_END
;
67 set_io_port_base((unsigned long) KSEG1
);
70 * Load the builtin devicetree. This causes the chosen node to be
71 * parsed resulting in our memory appearing
73 __dt_setup_arch(&__dtb_start
);
76 void __init
device_tree_init(void)
78 unsigned long base
, size
;
80 if (!initial_boot_params
)
83 base
= virt_to_phys((void *)initial_boot_params
);
84 size
= be32_to_cpu(initial_boot_params
->totalsize
);
86 /* Before we do anything, lets reserve the dt blob */
87 reserve_bootmem(base
, size
, BOOTMEM_DEFAULT
);
89 unflatten_device_tree();
92 void __init
prom_init(void)
94 /* call the soc specific detetcion code and get it to fill soc_info */
95 ltq_soc_detect(&soc_info
);
96 snprintf(soc_info
.sys_type
, LTQ_SYS_TYPE_LEN
- 1, "%s rev %s",
97 soc_info
.name
, soc_info
.rev_type
);
98 soc_info
.sys_type
[LTQ_SYS_TYPE_LEN
- 1] = '\0';
99 pr_info("SoC: %s\n", soc_info
.sys_type
);
102 #if defined(CONFIG_MIPS_MT_SMP)
103 if (register_vsmp_smp_ops())
104 panic("failed to register_vsmp_smp_ops()");
108 int __init
plat_of_setup(void)
110 static struct of_device_id of_ids
[3];
112 if (!of_have_populated_dt())
113 panic("device tree not present");
115 strncpy(of_ids
[0].compatible
, soc_info
.compatible
,
116 sizeof(of_ids
[0].compatible
));
117 strncpy(of_ids
[1].compatible
, "simple-bus",
118 sizeof(of_ids
[1].compatible
));
119 return of_platform_populate(NULL
, of_ids
, NULL
, NULL
);
122 arch_initcall(plat_of_setup
);
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