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