1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
23a5bfe7bSJohn Crispin /*
33a5bfe7bSJohn Crispin *
43a5bfe7bSJohn Crispin * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
53a5bfe7bSJohn Crispin * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
697b92108SJohn Crispin * Copyright (C) 2013 John Crispin <john@phrozen.org>
73a5bfe7bSJohn Crispin */
83a5bfe7bSJohn Crispin
93a5bfe7bSJohn Crispin #include <linux/io.h>
103a5bfe7bSJohn Crispin #include <linux/clk.h>
11fef532eaSRandy Dunlap #include <linux/export.h>
123a5bfe7bSJohn Crispin #include <linux/init.h>
13dd63b008SJohn Crispin #include <linux/sizes.h>
143a5bfe7bSJohn Crispin #include <linux/of_fdt.h>
153a5bfe7bSJohn Crispin #include <linux/kernel.h>
1657c8a661SMike Rapoport #include <linux/memblock.h>
17*657c45b3SRob Herring #include <linux/of.h>
183a5bfe7bSJohn Crispin #include <linux/of_address.h>
193a5bfe7bSJohn Crispin
203a5bfe7bSJohn Crispin #include <asm/reboot.h>
213a5bfe7bSJohn Crispin #include <asm/bootinfo.h>
223a5bfe7bSJohn Crispin #include <asm/addrspace.h>
23089a49b6SRob Herring #include <asm/prom.h>
2476ce5179SSergio Paracuellos #include <asm/mach-ralink/ralink_regs.h>
253a5bfe7bSJohn Crispin
263a5bfe7bSJohn Crispin #include "common.h"
273a5bfe7bSJohn Crispin
283a5bfe7bSJohn Crispin __iomem void *rt_sysc_membase;
293a5bfe7bSJohn Crispin __iomem void *rt_memc_membase;
30fef532eaSRandy Dunlap EXPORT_SYMBOL_GPL(rt_sysc_membase);
313a5bfe7bSJohn Crispin
32fd99ac50SShiji Yang static const struct of_device_id mtmips_memc_match[] = {
33fd99ac50SShiji Yang { .compatible = "mediatek,mt7621-memc" },
34fd99ac50SShiji Yang { .compatible = "ralink,mt7620a-memc" },
35fd99ac50SShiji Yang { .compatible = "ralink,rt2880-memc" },
36fd99ac50SShiji Yang { .compatible = "ralink,rt3050-memc" },
37fd99ac50SShiji Yang { .compatible = "ralink,rt3883-memc" },
38fd99ac50SShiji Yang {}
39fd99ac50SShiji Yang };
40fd99ac50SShiji Yang
41fd99ac50SShiji Yang static const struct of_device_id mtmips_sysc_match[] = {
42fd99ac50SShiji Yang { .compatible = "mediatek,mt7621-sysc" },
43670f77f7SShiji Yang { .compatible = "ralink,mt7620-sysc" },
44670f77f7SShiji Yang { .compatible = "ralink,mt7628-sysc" },
45670f77f7SShiji Yang { .compatible = "ralink,mt7688-sysc" },
46fd99ac50SShiji Yang { .compatible = "ralink,rt2880-sysc" },
47fd99ac50SShiji Yang { .compatible = "ralink,rt3050-sysc" },
48670f77f7SShiji Yang { .compatible = "ralink,rt3052-sysc" },
49670f77f7SShiji Yang { .compatible = "ralink,rt3352-sysc" },
50fd99ac50SShiji Yang { .compatible = "ralink,rt3883-sysc" },
51670f77f7SShiji Yang { .compatible = "ralink,rt5350-sysc" },
52fd99ac50SShiji Yang {}
53fd99ac50SShiji Yang };
54fd99ac50SShiji Yang
55fd99ac50SShiji Yang static __iomem void *
mtmips_of_remap_node(const struct of_device_id * match,const char * type)56fd99ac50SShiji Yang mtmips_of_remap_node(const struct of_device_id *match, const char *type)
573a5bfe7bSJohn Crispin {
583a5bfe7bSJohn Crispin struct resource res;
593a5bfe7bSJohn Crispin struct device_node *np;
603a5bfe7bSJohn Crispin
61fd99ac50SShiji Yang np = of_find_matching_node(NULL, match);
623a5bfe7bSJohn Crispin if (!np)
63fd99ac50SShiji Yang panic("Failed to find %s controller node", type);
643a5bfe7bSJohn Crispin
653a5bfe7bSJohn Crispin if (of_address_to_resource(np, 0, &res))
66fd99ac50SShiji Yang panic("Failed to get resource for %s node", np->name);
6748ca54e3SLiang He
686d2700a9SArnd Bergmann if (!request_mem_region(res.start,
693a5bfe7bSJohn Crispin resource_size(&res),
706d2700a9SArnd Bergmann res.name))
71fd99ac50SShiji Yang panic("Failed to request resources for %s node", np->name);
72fd99ac50SShiji Yang
73fd99ac50SShiji Yang of_node_put(np);
743a5bfe7bSJohn Crispin
754bdc0d67SChristoph Hellwig return ioremap(res.start, resource_size(&res));
763a5bfe7bSJohn Crispin }
773a5bfe7bSJohn Crispin
ralink_of_remap(void)78fd99ac50SShiji Yang void __init ralink_of_remap(void)
79fd99ac50SShiji Yang {
80fd99ac50SShiji Yang rt_sysc_membase = mtmips_of_remap_node(mtmips_sysc_match, "system");
81fd99ac50SShiji Yang rt_memc_membase = mtmips_of_remap_node(mtmips_memc_match, "memory");
82fd99ac50SShiji Yang
83fd99ac50SShiji Yang if (!rt_sysc_membase || !rt_memc_membase)
84fd99ac50SShiji Yang panic("Failed to remap core resources");
85fd99ac50SShiji Yang }
86fd99ac50SShiji Yang
plat_mem_setup(void)873a5bfe7bSJohn Crispin void __init plat_mem_setup(void)
883a5bfe7bSJohn Crispin {
89b83ba0b9SThomas Bogendoerfer void *dtb;
9002564fc8STobias Wolf
913a5bfe7bSJohn Crispin set_io_port_base(KSEG1);
923a5bfe7bSJohn Crispin
933a5bfe7bSJohn Crispin /*
943a5bfe7bSJohn Crispin * Load the builtin devicetree. This causes the chosen node to be
95b83ba0b9SThomas Bogendoerfer * parsed resulting in our memory appearing.
963a5bfe7bSJohn Crispin */
97b83ba0b9SThomas Bogendoerfer dtb = get_fdt();
9802564fc8STobias Wolf __dt_setup_arch(dtb);
99dd63b008SJohn Crispin
1002a12187dSAndreas Rammhold if (early_init_dt_scan_memory())
1011f012283SRob Herring return;
1021f012283SRob Herring
1031f012283SRob Herring if (soc_info.mem_detect)
104139c949fSChuanhong Guo soc_info.mem_detect();
10515d11120SJohn Crispin else if (soc_info.mem_size)
106e7ae8d17SThomas Bogendoerfer memblock_add(soc_info.mem_base, soc_info.mem_size * SZ_1M);
107dd63b008SJohn Crispin else
108dd63b008SJohn Crispin detect_memory_region(soc_info.mem_base,
109dd63b008SJohn Crispin soc_info.mem_size_min * SZ_1M,
110dd63b008SJohn Crispin soc_info.mem_size_max * SZ_1M);
1113a5bfe7bSJohn Crispin }
1123a5bfe7bSJohn Crispin
plat_of_setup(void)1133a5bfe7bSJohn Crispin static int __init plat_of_setup(void)
1143a5bfe7bSJohn Crispin {
11584988c06SKevin Cernekee __dt_register_buses(soc_info.compatible, "palmbus");
1163a5bfe7bSJohn Crispin
1173a5bfe7bSJohn Crispin return 0;
1183a5bfe7bSJohn Crispin }
1193a5bfe7bSJohn Crispin
1203a5bfe7bSJohn Crispin arch_initcall(plat_of_setup);
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