cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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prom.c (1384B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *
      4 *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
      5 *  Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
      6 *  Copyright (C) 2013 John Crispin <john@phrozen.org>
      7 */
      8
      9#include <linux/string.h>
     10#include <linux/of_fdt.h>
     11#include <linux/of_platform.h>
     12
     13#include <asm/bootinfo.h>
     14#include <asm/addrspace.h>
     15
     16#include <asm/mach-ralink/ralink_regs.h>
     17
     18#include "common.h"
     19
     20struct ralink_soc_info soc_info;
     21
     22enum ralink_soc_type ralink_soc;
     23EXPORT_SYMBOL_GPL(ralink_soc);
     24
     25const char *get_system_type(void)
     26{
     27	return soc_info.sys_type;
     28}
     29
     30static __init void prom_init_cmdline(void)
     31{
     32	int argc;
     33	char **argv;
     34	int i;
     35
     36	pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
     37	       (unsigned int)fw_arg0, (unsigned int)fw_arg1,
     38	       (unsigned int)fw_arg2, (unsigned int)fw_arg3);
     39
     40	argc = fw_arg0;
     41	argv = (char **) KSEG1ADDR(fw_arg1);
     42
     43	if (!argv) {
     44		pr_debug("argv=%p is invalid, skipping\n",
     45		       argv);
     46		return;
     47	}
     48
     49	for (i = 0; i < argc; i++) {
     50		char *p = (char *) KSEG1ADDR(argv[i]);
     51
     52		if (CPHYSADDR(p) && *p) {
     53			pr_debug("argv[%d]: %s\n", i, p);
     54			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
     55			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
     56		}
     57	}
     58}
     59
     60void __init prom_init(void)
     61{
     62	prom_soc_init(&soc_info);
     63
     64	pr_info("SoC Type: %s\n", get_system_type());
     65
     66	prom_init_cmdline();
     67}