Commit | Line | Data |
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171bb2f1 JC |
1 | /* |
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. | |
5 | * | |
6 | * Copyright (C) 2010 John Crispin <blogic@openwrt.org> | |
7 | */ | |
8 | ||
4af92e7a | 9 | #include <linux/export.h> |
171bb2f1 | 10 | #include <linux/clk.h> |
a9188bc1 | 11 | #include <linux/bootmem.h> |
a0392222 | 12 | #include <linux/of_platform.h> |
a9188bc1 JC |
13 | #include <linux/of_fdt.h> |
14 | ||
171bb2f1 JC |
15 | #include <asm/bootinfo.h> |
16 | #include <asm/time.h> | |
17 | ||
18 | #include <lantiq.h> | |
19 | ||
20 | #include "prom.h" | |
21 | #include "clk.h" | |
22 | ||
a0392222 JC |
23 | /* access to the ebu needs to be locked between different drivers */ |
24 | DEFINE_SPINLOCK(ebu_lock); | |
25 | EXPORT_SYMBOL_GPL(ebu_lock); | |
171bb2f1 | 26 | |
a0392222 JC |
27 | /* |
28 | * this struct is filled by the soc specific detection code and holds | |
29 | * information about the specific soc type, revision and name | |
30 | */ | |
31 | static struct ltq_soc_info soc_info; | |
171bb2f1 | 32 | |
171bb2f1 JC |
33 | const char *get_system_type(void) |
34 | { | |
35 | return soc_info.sys_type; | |
36 | } | |
37 | ||
38 | void prom_free_prom_memory(void) | |
39 | { | |
40 | } | |
41 | ||
42 | static void __init prom_init_cmdline(void) | |
43 | { | |
44 | int argc = fw_arg0; | |
45 | char **argv = (char **) KSEG1ADDR(fw_arg1); | |
46 | int i; | |
47 | ||
730fa039 TL |
48 | arcs_cmdline[0] = '\0'; |
49 | ||
171bb2f1 | 50 | for (i = 0; i < argc; i++) { |
730fa039 | 51 | char *p = (char *) KSEG1ADDR(argv[i]); |
171bb2f1 | 52 | |
730fa039 | 53 | if (CPHYSADDR(p) && *p) { |
171bb2f1 JC |
54 | strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); |
55 | strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); | |
56 | } | |
57 | } | |
58 | } | |
59 | ||
a0392222 | 60 | void __init plat_mem_setup(void) |
171bb2f1 | 61 | { |
a0392222 JC |
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; | |
66 | ||
67 | set_io_port_base((unsigned long) KSEG1); | |
68 | ||
69 | /* | |
70 | * Load the builtin devicetree. This causes the chosen node to be | |
71 | * parsed resulting in our memory appearing | |
72 | */ | |
73 | __dt_setup_arch(&__dtb_start); | |
74 | } | |
171bb2f1 | 75 | |
a9188bc1 JC |
76 | void __init device_tree_init(void) |
77 | { | |
78 | unsigned long base, size; | |
79 | ||
80 | if (!initial_boot_params) | |
81 | return; | |
82 | ||
83 | base = virt_to_phys((void *)initial_boot_params); | |
84 | size = be32_to_cpu(initial_boot_params->totalsize); | |
85 | ||
86 | /* Before we do anything, lets reserve the dt blob */ | |
87 | reserve_bootmem(base, size, BOOTMEM_DEFAULT); | |
88 | ||
89 | unflatten_device_tree(); | |
90 | ||
91 | /* free the space reserved for the dt blob */ | |
92 | free_bootmem(base, size); | |
93 | } | |
94 | ||
a0392222 JC |
95 | void __init prom_init(void) |
96 | { | |
97 | /* call the soc specific detetcion code and get it to fill soc_info */ | |
171bb2f1 | 98 | ltq_soc_detect(&soc_info); |
a0392222 JC |
99 | snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s", |
100 | soc_info.name, soc_info.rev_type); | |
171bb2f1 JC |
101 | soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0'; |
102 | pr_info("SoC: %s\n", soc_info.sys_type); | |
103 | prom_init_cmdline(); | |
a8d096ef JC |
104 | |
105 | #if defined(CONFIG_MIPS_MT_SMP) | |
106 | if (register_vsmp_smp_ops()) | |
107 | panic("failed to register_vsmp_smp_ops()"); | |
108 | #endif | |
171bb2f1 | 109 | } |
a0392222 JC |
110 | |
111 | int __init plat_of_setup(void) | |
112 | { | |
113 | static struct of_device_id of_ids[3]; | |
114 | ||
115 | if (!of_have_populated_dt()) | |
116 | panic("device tree not present"); | |
117 | ||
118 | strncpy(of_ids[0].compatible, soc_info.compatible, | |
119 | sizeof(of_ids[0].compatible)); | |
120 | strncpy(of_ids[1].compatible, "simple-bus", | |
121 | sizeof(of_ids[1].compatible)); | |
122 | return of_platform_bus_probe(NULL, of_ids, NULL); | |
123 | } | |
124 | ||
125 | arch_initcall(plat_of_setup); |