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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pa7300lc.c (1166B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 *   linux/arch/parisc/kernel/pa7300lc.c
      4 *	- PA7300LC-specific functions	
      5 *
      6 *   Copyright (C) 2000 Philipp Rumpf */
      7
      8#include <linux/sched.h>
      9#include <linux/sched/debug.h>
     10#include <linux/smp.h>
     11#include <linux/kernel.h>
     12#include <asm/io.h>
     13#include <asm/ptrace.h>
     14#include <asm/machdep.h>
     15
     16/* CPU register indices */
     17
     18#define MIOC_STATUS	0xf040
     19#define MIOC_CONTROL	0xf080
     20#define MDERRADD	0xf0e0
     21#define DMAERR		0xf0e8
     22#define DIOERR		0xf0ec
     23#define HIDMAMEM	0xf0f4
     24
     25/* this returns the HPA of the CPU it was called on */
     26static u32 cpu_hpa(void)
     27{
     28	return 0xfffb0000;
     29}
     30
     31static void pa7300lc_lpmc(int code, struct pt_regs *regs)
     32{
     33	u32 hpa;
     34	printk(KERN_WARNING "LPMC on CPU %d\n", smp_processor_id());
     35
     36	show_regs(regs);
     37
     38	hpa = cpu_hpa();
     39	printk(KERN_WARNING
     40		"MIOC_CONTROL %08x\n" "MIOC_STATUS  %08x\n"
     41		"MDERRADD     %08x\n" "DMAERR       %08x\n"
     42		"DIOERR       %08x\n" "HIDMAMEM     %08x\n",
     43		gsc_readl(hpa+MIOC_CONTROL), gsc_readl(hpa+MIOC_STATUS),
     44		gsc_readl(hpa+MDERRADD), gsc_readl(hpa+DMAERR),
     45		gsc_readl(hpa+DIOERR), gsc_readl(hpa+HIDMAMEM));
     46}
     47
     48void pa7300lc_init(void)
     49{
     50	cpu_lpmc = pa7300lc_lpmc;
     51}