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/of_platform.h>
12 #include <asm/bootinfo.h>
20 /* access to the ebu needs to be locked between different drivers */
21 DEFINE_SPINLOCK(ebu_lock);
22 EXPORT_SYMBOL_GPL(ebu_lock);
25 * this struct is filled by the soc specific detection code and holds
26 * information about the specific soc type, revision and name
28 static struct ltq_soc_info soc_info;
30 const char *get_system_type(void)
32 return soc_info.sys_type;
35 void prom_free_prom_memory(void)
39 static void __init prom_init_cmdline(void)
42 char **argv = (char **) KSEG1ADDR(fw_arg1);
45 arcs_cmdline[0] = '\0';
47 for (i = 0; i < argc; i++) {
48 char *p = (char *) KSEG1ADDR(argv[i]);
50 if (CPHYSADDR(p) && *p) {
51 strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
52 strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
57 void __init plat_mem_setup(void)
59 ioport_resource.start = IOPORT_RESOURCE_START;
60 ioport_resource.end = IOPORT_RESOURCE_END;
61 iomem_resource.start = IOMEM_RESOURCE_START;
62 iomem_resource.end = IOMEM_RESOURCE_END;
64 set_io_port_base((unsigned long) KSEG1);
67 * Load the builtin devicetree. This causes the chosen node to be
68 * parsed resulting in our memory appearing
70 __dt_setup_arch(&__dtb_start);
73 void __init prom_init(void)
75 /* call the soc specific detetcion code and get it to fill soc_info */
76 ltq_soc_detect(&soc_info);
77 snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
78 soc_info.name, soc_info.rev_type);
79 soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
80 pr_info("SoC: %s\n", soc_info.sys_type);
83 #if defined(CONFIG_MIPS_MT_SMP)
84 if (register_vsmp_smp_ops())
85 panic("failed to register_vsmp_smp_ops()");
89 int __init plat_of_setup(void)
91 static struct of_device_id of_ids[3];
93 if (!of_have_populated_dt())
94 panic("device tree not present");
96 strncpy(of_ids[0].compatible, soc_info.compatible,
97 sizeof(of_ids[0].compatible));
98 strncpy(of_ids[1].compatible, "simple-bus",
99 sizeof(of_ids[1].compatible));
100 return of_platform_bus_probe(NULL, of_ids, NULL);
103 arch_initcall(plat_of_setup);