74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2012 Regents of the University of California
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation, version 2.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/bootmem.h>
|
||
|
|
#include <linux/initrd.h>
|
||
|
|
#include <linux/memblock.h>
|
||
|
|
#include <linux/swap.h>
|
||
|
|
#include <linux/sizes.h>
|
||
|
|
|
||
|
|
#include <asm/tlbflush.h>
|
||
|
|
#include <asm/sections.h>
|
||
|
|
#include <asm/pgtable.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
|
||
|
|
static void __init zone_sizes_init(void)
|
||
|
|
{
|
||
|
|
unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, };
|
||
|
|
|
||
|
|
#ifdef CONFIG_ZONE_DMA32
|
||
|
|
max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G,
|
||
|
|
(unsigned long) PFN_PHYS(max_low_pfn)));
|
||
|
|
#endif
|
||
|
|
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
|
||
|
|
|
||
|
|
free_area_init_nodes(max_zone_pfns);
|
||
|
|
}
|
||
|
|
|
||
|
|
void setup_zero_page(void)
|
||
|
|
{
|
||
|
|
memset((void *)empty_zero_page, 0, PAGE_SIZE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init paging_init(void)
|
||
|
|
{
|
||
|
|
setup_zero_page();
|
||
|
|
local_flush_tlb_all();
|
||
|
|
zone_sizes_init();
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init mem_init(void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_FLATMEM
|
||
|
|
BUG_ON(!mem_map);
|
||
|
|
#endif /* CONFIG_FLATMEM */
|
||
|
|
|
||
|
|
high_memory = (void *)(__va(PFN_PHYS(max_low_pfn)));
|
||
|
|
free_all_bootmem();
|
||
|
|
|
||
|
|
mem_init_print_info(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
void free_initmem(void)
|
||
|
|
{
|
||
|
|
free_initmem_default(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
||
|
|
void free_initrd_mem(unsigned long start, unsigned long end)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_BLK_DEV_INITRD */
|