Cregit: Linux 5.13: cpu.c

Contributors: 5
Author	Tokens	Token Proportion	Commits	Commit Proportion
Kukjin Kim	60	76.92%	1	20.00%
Olof Johansson	7	8.97%	1	20.00%
Krzysztof Kozlowski	6	7.69%	1	20.00%
Ben Dooks	3	3.85%	1	20.00%
Arnd Bergmann	2	2.56%	1	20.00%
Total	78		5

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
//		http://www.samsung.com
//
// Samsung CPU Support

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>

#include <mach/map-base.h>
#include "cpu.h"

unsigned long samsung_cpu_id;

void __init s3c64xx_init_cpu(void)
{
	samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0x118);
	if (!samsung_cpu_id) {
		/*
		 * S3C6400 has the ID register in a different place,
		 * and needs a write before it can be read.
		 */
		writel_relaxed(0x0, S3C_VA_SYS + 0xA1C);
		samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0xA1C);
	}

	pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
}