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// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/cris/mm/init.c
*
* Copyright (C) 1995 Linus Torvalds
* Copyright (C) 2000,2001 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
*/
#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
#include <linux/kcore.h>
#include <asm/tlb.h>
#include <asm/sections.h>
unsigned long empty_zero_page;
EXPORT_SYMBOL(empty_zero_page);
void __init mem_init(void)
{
BUG_ON(!mem_map);
/* max/min_low_pfn was set by setup.c
* now we just copy it to some other necessary places...
*
* high_memory was also set in setup.c
*/
max_mapnr = max_low_pfn - min_low_pfn;
free_all_bootmem();
mem_init_print_info(NULL);
}
/* Free a range of init pages. Virtual addresses. */
void free_init_pages(const char *what, unsigned long begin, unsigned long end)
{
unsigned long addr;
for (addr = begin; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
free_page(addr);
totalram_pages++;
}
printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
}
/* Free the pages occupied by initialization code. */
void free_initmem(void)
{
free_initmem_default(-1);
}
/* Free the pages occupied by initrd code. */
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory",
start,
end);
}
#endif
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