cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

setup.c (1790B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *
      4 * arch/xtensa/platform-iss/setup.c
      5 *
      6 * Platform specific initialization.
      7 *
      8 * Authors: Chris Zankel <chris@zankel.net>
      9 *          Joe Taylor <joe@tensilica.com>
     10 *
     11 * Copyright 2001 - 2005 Tensilica Inc.
     12 * Copyright 2017 Cadence Design Systems Inc.
     13 */
     14#include <linux/init.h>
     15#include <linux/kernel.h>
     16#include <linux/notifier.h>
     17#include <linux/panic_notifier.h>
     18#include <linux/printk.h>
     19#include <linux/string.h>
     20
     21#include <asm/platform.h>
     22#include <asm/setup.h>
     23
     24#include <platform/simcall.h>
     25
     26
     27void platform_halt(void)
     28{
     29	pr_info(" ** Called platform_halt() **\n");
     30	simc_exit(0);
     31}
     32
     33void platform_power_off(void)
     34{
     35	pr_info(" ** Called platform_power_off() **\n");
     36	simc_exit(0);
     37}
     38
     39void platform_restart(void)
     40{
     41	/* Flush and reset the mmu, simulate a processor reset, and
     42	 * jump to the reset vector. */
     43	cpu_reset();
     44	/* control never gets here */
     45}
     46
     47static int
     48iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
     49{
     50	simc_exit(1);
     51	return NOTIFY_DONE;
     52}
     53
     54static struct notifier_block iss_panic_block = {
     55	.notifier_call = iss_panic_event,
     56};
     57
     58void __init platform_setup(char **p_cmdline)
     59{
     60	static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
     61	static char cmdline[COMMAND_LINE_SIZE] __initdata;
     62	int argc = simc_argc();
     63	int argv_size = simc_argv_size();
     64
     65	if (argc > 1) {
     66		if (argv_size > sizeof(argv)) {
     67			pr_err("%s: command line too long: argv_size = %d\n",
     68			       __func__, argv_size);
     69		} else {
     70			int i;
     71
     72			cmdline[0] = 0;
     73			simc_argv((void *)argv);
     74
     75			for (i = 1; i < argc; ++i) {
     76				if (i > 1)
     77					strcat(cmdline, " ");
     78				strcat(cmdline, argv[i]);
     79			}
     80			*p_cmdline = cmdline;
     81		}
     82	}
     83
     84	atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
     85}