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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platform.c (1242B)

      1/*
      2 * arch/xtensa/kernel/platform.c
      3 *
      4 * Default platform functions.
      5 *
      6 * This file is subject to the terms and conditions of the GNU General Public
      7 * License.  See the file "COPYING" in the main directory of this archive
      8 * for more details.
      9 *
     10 * Copyright (C) 2005 Tensilica Inc.
     11 *
     12 * Chris Zankel <chris@zankel.net>
     13 */
     14
     15#include <linux/printk.h>
     16#include <linux/types.h>
     17#include <asm/platform.h>
     18#include <asm/timex.h>
     19
     20#define _F(r,f,a,b)							\
     21	r __platform_##f a b;                                   	\
     22	r platform_##f a __attribute__((weak, alias("__platform_"#f)))
     23
     24/*
     25 * Default functions that are used if no platform specific function is defined.
     26 * (Please, refer to include/asm-xtensa/platform.h for more information)
     27 */
     28
     29_F(void, init, (bp_tag_t *first), { });
     30_F(void, setup, (char** cmd), { });
     31_F(void, restart, (void), { while(1); });
     32_F(void, halt, (void), { while(1); });
     33_F(void, power_off, (void), { while(1); });
     34_F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); });
     35_F(void, heartbeat, (void), { });
     36
     37#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
     38_F(void, calibrate_ccount, (void),
     39{
     40	pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
     41	ccount_freq = 10 * 1000000UL;
     42});
     43#endif