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101 lines
2.2 KiB
101 lines
2.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* |
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* Copyright (C) 2008 Imre Kaloz <[email protected]> |
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* Copyright (C) 2008-2009 Gabor Juhos <[email protected]> |
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* Copyright (C) 2013 John Crispin <[email protected]> |
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*/ |
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#include <linux/io.h> |
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#include <linux/clk.h> |
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#include <linux/export.h> |
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#include <linux/init.h> |
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#include <linux/sizes.h> |
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#include <linux/of_fdt.h> |
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#include <linux/kernel.h> |
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#include <linux/memblock.h> |
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#include <linux/of_platform.h> |
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#include <linux/of_address.h> |
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#include <asm/reboot.h> |
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#include <asm/bootinfo.h> |
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#include <asm/addrspace.h> |
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#include <asm/prom.h> |
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#include "common.h" |
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__iomem void *rt_sysc_membase; |
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__iomem void *rt_memc_membase; |
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EXPORT_SYMBOL_GPL(rt_sysc_membase); |
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__iomem void *plat_of_remap_node(const char *node) |
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{ |
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struct resource res; |
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struct device_node *np; |
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np = of_find_compatible_node(NULL, NULL, node); |
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if (!np) |
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panic("Failed to find %s node", node); |
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if (of_address_to_resource(np, 0, &res)) |
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panic("Failed to get resource for %s", node); |
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if (!request_mem_region(res.start, |
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resource_size(&res), |
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res.name)) |
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panic("Failed to request resources for %s", node); |
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return ioremap(res.start, resource_size(&res)); |
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} |
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void __init device_tree_init(void) |
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{ |
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unflatten_and_copy_device_tree(); |
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} |
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static int memory_dtb; |
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static int __init early_init_dt_find_memory(unsigned long node, |
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const char *uname, int depth, void *data) |
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{ |
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if (depth == 1 && !strcmp(uname, "memory@0")) |
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memory_dtb = 1; |
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return 0; |
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} |
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void __init plat_mem_setup(void) |
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{ |
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void *dtb; |
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set_io_port_base(KSEG1); |
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/* |
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* Load the builtin devicetree. This causes the chosen node to be |
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* parsed resulting in our memory appearing. |
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*/ |
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dtb = get_fdt(); |
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__dt_setup_arch(dtb); |
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of_scan_flat_dt(early_init_dt_find_memory, NULL); |
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if (memory_dtb) |
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of_scan_flat_dt(early_init_dt_scan_memory, NULL); |
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else if (soc_info.mem_size) |
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memblock_add(soc_info.mem_base, soc_info.mem_size * SZ_1M); |
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else |
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detect_memory_region(soc_info.mem_base, |
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soc_info.mem_size_min * SZ_1M, |
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soc_info.mem_size_max * SZ_1M); |
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} |
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static int __init plat_of_setup(void) |
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{ |
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__dt_register_buses(soc_info.compatible, "palmbus"); |
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/* make sure that the reset controller is setup early */ |
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ralink_rst_init(); |
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return 0; |
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} |
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arch_initcall(plat_of_setup);
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