cpu-info.c
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/*
* Copyright (C) 2013-2014 Panasonic Corporation
* Copyright (C) 2015-2017 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <stdio.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/printk.h>
#include "soc-info.h"
int print_cpuinfo(void)
{
unsigned int id, model, rev, required_model = 1, required_rev = 1;
id = uniphier_get_soc_id();
model = uniphier_get_soc_model();
rev = uniphier_get_soc_revision();
puts("SoC: ");
switch (id) {
case UNIPHIER_LD4_ID:
puts("LD4");
required_rev = 2;
break;
case UNIPHIER_PRO4_ID:
puts("Pro4");
break;
case UNIPHIER_SLD8_ID:
puts("sLD8");
break;
case UNIPHIER_PRO5_ID:
puts("Pro5");
break;
case UNIPHIER_PXS2_ID:
puts("PXs2");
break;
case UNIPHIER_LD6B_ID:
puts("LD6b");
break;
case UNIPHIER_LD11_ID:
puts("LD11");
break;
case UNIPHIER_LD20_ID:
puts("LD20");
break;
case UNIPHIER_PXS3_ID:
puts("PXs3");
break;
default:
printf("Unknown Processor ID (0x%x)\n", id);
return -ENOTSUPP;
}
printf(" (model %d, revision %d)\n", model, rev);
if (model < required_model) {
pr_err("Only model %d or newer is supported.\n",
required_model);
return -ENOTSUPP;
} else if (rev < required_rev) {
pr_err("Only revision %d or newer is supported.\n",
required_rev);
return -ENOTSUPP;
}
return 0;
}