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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mach-vf610.c (1404B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Copyright 2012-2013 Freescale Semiconductor, Inc.
      4 */
      5
      6#include <linux/of_address.h>
      7#include <linux/of_platform.h>
      8#include <linux/io.h>
      9
     10#include <linux/irqchip.h>
     11#include <asm/mach/arch.h>
     12#include <asm/hardware/cache-l2x0.h>
     13
     14#include "common.h"
     15#include "hardware.h"
     16
     17#define MSCM_CPxCOUNT		0x00c
     18#define MSCM_CPxCFG1		0x014
     19
     20static void __init vf610_detect_cpu(void)
     21{
     22	struct device_node *np;
     23	u32 cpxcount, cpxcfg1;
     24	unsigned int cpu_type;
     25	void __iomem *mscm;
     26
     27	np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
     28	if (WARN_ON(!np))
     29		return;
     30
     31	mscm = of_iomap(np, 0);
     32	of_node_put(np);
     33
     34	if (WARN_ON(!mscm))
     35		return;
     36
     37	cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
     38	cpxcfg1  = readl_relaxed(mscm + MSCM_CPxCFG1);
     39
     40	iounmap(mscm);
     41
     42	cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
     43
     44	if (cpxcfg1)
     45		cpu_type |= MXC_CPU_VFx10;
     46
     47	mxc_set_cpu_type(cpu_type);
     48}
     49
     50static void __init vf610_init_machine(void)
     51{
     52	vf610_detect_cpu();
     53
     54	of_platform_default_populate(NULL, NULL, NULL);
     55}
     56
     57static const char * const vf610_dt_compat[] __initconst = {
     58	"fsl,vf500",
     59	"fsl,vf510",
     60	"fsl,vf600",
     61	"fsl,vf610",
     62	"fsl,vf610m4",
     63	NULL,
     64};
     65
     66DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
     67	.l2c_aux_val	= 0,
     68	.l2c_aux_mask	= ~0,
     69	.init_machine   = vf610_init_machine,
     70	.dt_compat	= vf610_dt_compat,
     71MACHINE_END