mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 07:46:51 +07:00
02f5532445
Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
|
|
* Port on Texas Instruments TMS320C6x architecture
|
|
*
|
|
* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
|
|
* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <linux/swap.h>
|
|
#include <linux/module.h>
|
|
#include <linux/bootmem.h>
|
|
#ifdef CONFIG_BLK_DEV_RAM
|
|
#include <linux/blkdev.h>
|
|
#endif
|
|
#include <linux/initrd.h>
|
|
|
|
#include <asm/sections.h>
|
|
#include <asm/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 zones_size[MAX_NR_ZONES] = {0, };
|
|
|
|
empty_zero_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE);
|
|
memset((void *)empty_zero_page, 0, PAGE_SIZE);
|
|
|
|
/*
|
|
* Set up user data space
|
|
*/
|
|
set_fs(KERNEL_DS);
|
|
|
|
/*
|
|
* Define zones
|
|
*/
|
|
zones_size[ZONE_NORMAL] = (memory_end - PAGE_OFFSET) >> PAGE_SHIFT;
|
|
pgdat->node_zones[ZONE_NORMAL].zone_start_pfn =
|
|
__pa(PAGE_OFFSET) >> PAGE_SHIFT;
|
|
|
|
free_area_init(zones_size);
|
|
}
|
|
|
|
void __init mem_init(void)
|
|
{
|
|
high_memory = (void *)(memory_end & PAGE_MASK);
|
|
|
|
/* this will put all memory onto the freelists */
|
|
free_all_bootmem();
|
|
|
|
mem_init_print_info(NULL);
|
|
}
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
void __init free_initrd_mem(unsigned long start, unsigned long end)
|
|
{
|
|
free_reserved_area((void *)start, (void *)end, -1, "initrd");
|
|
}
|
|
#endif
|
|
|
|
void __init free_initmem(void)
|
|
{
|
|
free_initmem_default(-1);
|
|
}
|