68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
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// 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 (aurelien.jacquiot@jaluna.com)
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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 zones_size[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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zones_size[ZONE_NORMAL] = (memory_end - PAGE_OFFSET) >> PAGE_SHIFT;
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pgdat->node_zones[ZONE_NORMAL].zone_start_pfn =
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__pa(PAGE_OFFSET) >> PAGE_SHIFT;
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free_area_init(zones_size);
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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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