cpu.c (944B)
1// SPDX-License-Identifier: GPL-2.0 2// 3// Copyright (c) 2009-2011 Samsung Electronics Co., Ltd. 4// http://www.samsung.com 5// 6// Samsung CPU Support 7 8#include <linux/module.h> 9#include <linux/kernel.h> 10#include <linux/init.h> 11#include <linux/io.h> 12 13#include "map-base.h" 14#include "cpu.h" 15 16unsigned long samsung_cpu_id; 17 18void __init s3c64xx_init_cpu(void) 19{ 20 samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0x118); 21 if (!samsung_cpu_id) { 22 /* 23 * S3C6400 has the ID register in a different place, 24 * and needs a write before it can be read. 25 */ 26 writel_relaxed(0x0, S3C_VA_SYS + 0xA1C); 27 samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0xA1C); 28 } 29 30 pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id); 31 pr_err("The platform is deprecated and scheduled for removal. Please reach to the maintainers of the platform and linux-samsung-soc@vger.kernel.org if you still use it. Without such feedback, the platform will be removed after 2022.\n"); 32}