59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2016 Samsung Electronics, Inc.
|
||
|
|
*
|
||
|
|
* This software is licensed under the terms of the GNU General Public
|
||
|
|
* License version 2, as published by the Free Software Foundation, and
|
||
|
|
* may be copied, distributed, and modified under those terms.
|
||
|
|
*
|
||
|
|
* 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/fs.h>
|
||
|
|
#include <linux/proc_fs.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <asm/setup.h>
|
||
|
|
#include <asm/memblock.h>
|
||
|
|
#include <linux/trace_seq.h>
|
||
|
|
#include <linux/seq_file.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
|
||
|
|
unsigned long get_ddr_size(void)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
unsigned long ret = 0;
|
||
|
|
|
||
|
|
for(i=0; i< meminfo.nr_banks; i++)
|
||
|
|
ret += meminfo.bank[i].size;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
static int sec_ddrsize_proc_show(struct seq_file *m, void *v)
|
||
|
|
{
|
||
|
|
unsigned int total_size = get_ddr_size();
|
||
|
|
seq_printf(m, "%d\n", total_size >> (20));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int sec_ddrsize_proc_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
return single_open(file, sec_ddrsize_proc_show, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations sec_ddrsize_proc_fops = {
|
||
|
|
.open = sec_ddrsize_proc_open,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek,
|
||
|
|
.release= single_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init samsung_proc_ddrsize_init(void)
|
||
|
|
{
|
||
|
|
proc_create("sec_ddrsize", 0, NULL, &sec_ddrsize_proc_fops);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
late_initcall(samsung_proc_ddrsize_init);
|