projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a5bfe7b 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) 2008 Imre Kaloz <kaloz@openwrt.org> | |
| 7 | * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> | |
| 97b92108 | 8 | * Copyright (C) 2013 John Crispin <john@phrozen.org> |
| 3a5bfe7b JC |
9 | */ |
| 10 | ||
| 11 | #include <linux/io.h> | |
| 12 | #include <linux/clk.h> | |
| 13 | #include <linux/init.h> | |
| dd63b008 | 14 | #include <linux/sizes.h> |
| 3a5bfe7b JC |
15 | #include <linux/of_fdt.h> |
| 16 | #include <linux/kernel.h> | |
| 17 | #include <linux/bootmem.h> | |
| 18 | #include <linux/of_platform.h> | |
| 19 | #include <linux/of_address.h> | |
| 20 | ||
| 21 | #include <asm/reboot.h> | |
| 22 | #include <asm/bootinfo.h> | |
| 23 | #include <asm/addrspace.h> | |
| 089a49b6 | 24 | #include <asm/prom.h> |
| 3a5bfe7b JC |
25 | |
| 26 | #include "common.h" | |
| 27 | ||
| 28 | __iomem void *rt_sysc_membase; | |
| 29 | __iomem void *rt_memc_membase; | |
| 30 | ||
| 3a5bfe7b JC |
31 | __iomem void *plat_of_remap_node(const char *node) |
| 32 | { | |
| 33 | struct resource res; | |
| 34 | struct device_node *np; | |
| 35 | ||
| 36 | np = of_find_compatible_node(NULL, NULL, node); | |
| 37 | if (!np) | |
| 38 | panic("Failed to find %s node", node); | |
| 39 | ||
| 40 | if (of_address_to_resource(np, 0, &res)) | |
| 41 | panic("Failed to get resource for %s", node); | |
| 42 | ||
| 6d2700a9 | 43 | if (!request_mem_region(res.start, |
| 3a5bfe7b | 44 | resource_size(&res), |
| 6d2700a9 | 45 | res.name)) |
| 3a5bfe7b JC |
46 | panic("Failed to request resources for %s", node); |
| 47 | ||
| 48 | return ioremap_nocache(res.start, resource_size(&res)); | |
| 49 | } | |
| 50 | ||
| 51 | void __init device_tree_init(void) | |
| 52 | { | |
| afb46f79 | 53 | unflatten_and_copy_device_tree(); |
| 3a5bfe7b JC |
54 | } |
| 55 | ||
| 15d11120 JC |
56 | static int memory_dtb; |
| 57 | ||
| 58 | static int __init early_init_dt_find_memory(unsigned long node, | |
| 59 | const char *uname, int depth, void *data) | |
| 60 | { | |
| 61 | if (depth == 1 && !strcmp(uname, "memory@0")) | |
| 62 | memory_dtb = 1; | |
| 63 | ||
| 64 | return 0; | |
| 65 | } | |
| 66 | ||
| 3a5bfe7b JC |
67 | void __init plat_mem_setup(void) |
| 68 | { | |
| 02564fc8 TW |
69 | void *dtb = NULL; |
| 70 | ||
| 3a5bfe7b JC |
71 | set_io_port_base(KSEG1); |
| 72 | ||
| 73 | /* | |
| 74 | * Load the builtin devicetree. This causes the chosen node to be | |
| 02564fc8 TW |
75 | * parsed resulting in our memory appearing. fw_passed_dtb is used |
| 76 | * by CONFIG_MIPS_APPENDED_RAW_DTB as well. | |
| 3a5bfe7b | 77 | */ |
| 02564fc8 TW |
78 | if (fw_passed_dtb) |
| 79 | dtb = (void *)fw_passed_dtb; | |
| 80 | else if (__dtb_start != __dtb_end) | |
| 81 | dtb = (void *)__dtb_start; | |
| 82 | ||
| 83 | __dt_setup_arch(dtb); | |
| dd63b008 | 84 | |
| 15d11120 JC |
85 | of_scan_flat_dt(early_init_dt_find_memory, NULL); |
| 86 | if (memory_dtb) | |
| 87 | of_scan_flat_dt(early_init_dt_scan_memory, NULL); | |
| 88 | else if (soc_info.mem_size) | |
| cdfce539 | 89 | add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M, |
| dd63b008 JC |
90 | BOOT_MEM_RAM); |
| 91 | else | |
| 92 | detect_memory_region(soc_info.mem_base, | |
| 93 | soc_info.mem_size_min * SZ_1M, | |
| 94 | soc_info.mem_size_max * SZ_1M); | |
| 3a5bfe7b JC |
95 | } |
| 96 | ||
| 97 | static int __init plat_of_setup(void) | |
| 98 | { | |
| 84988c06 | 99 | __dt_register_buses(soc_info.compatible, "palmbus"); |
| 3a5bfe7b | 100 | |
| 84988c06 | 101 | /* make sure that the reset controller is setup early */ |
| 2a153f1c JC |
102 | ralink_rst_init(); |
| 103 | ||
| 3a5bfe7b JC |
104 | return 0; |
| 105 | } | |
| 106 | ||
| 107 | arch_initcall(plat_of_setup); |