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65 lines
1.5 KiB
65 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Port on Texas Instruments TMS320C6x architecture |
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* |
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* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated |
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* Author: Aurelien Jacquiot ([email protected]) |
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*/ |
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#include <linux/mm.h> |
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#include <linux/swap.h> |
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#include <linux/module.h> |
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#include <linux/memblock.h> |
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#ifdef CONFIG_BLK_DEV_RAM |
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#include <linux/blkdev.h> |
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#endif |
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#include <linux/initrd.h> |
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#include <asm/sections.h> |
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#include <linux/uaccess.h> |
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/* |
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* ZERO_PAGE is a special page that is used for zero-initialized |
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* data and COW. |
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*/ |
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unsigned long empty_zero_page; |
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EXPORT_SYMBOL(empty_zero_page); |
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/* |
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* paging_init() continues the virtual memory environment setup which |
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* was begun by the code in arch/head.S. |
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* The parameters are pointers to where to stick the starting and ending |
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* addresses of available kernel virtual memory. |
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*/ |
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void __init paging_init(void) |
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{ |
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struct pglist_data *pgdat = NODE_DATA(0); |
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unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; |
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empty_zero_page = (unsigned long) memblock_alloc(PAGE_SIZE, |
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PAGE_SIZE); |
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if (!empty_zero_page) |
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panic("%s: Failed to allocate %lu bytes align=0x%lx\n", |
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__func__, PAGE_SIZE, PAGE_SIZE); |
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/* |
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* Set up user data space |
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*/ |
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set_fs(KERNEL_DS); |
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/* |
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* Define zones |
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*/ |
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max_zone_pfn[ZONE_NORMAL] = memory_end >> PAGE_SHIFT; |
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free_area_init(max_zone_pfn); |
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} |
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void __init mem_init(void) |
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{ |
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high_memory = (void *)(memory_end & PAGE_MASK); |
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/* this will put all memory onto the freelists */ |
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memblock_free_all(); |
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mem_init_print_info(NULL); |
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}
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