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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r8a77990-sysc.c (1664B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Renesas R-Car E3 System Controller
      4 *
      5 * Copyright (C) 2018 Renesas Electronics Corp.
      6 */
      7
      8#include <linux/bits.h>
      9#include <linux/kernel.h>
     10#include <linux/sys_soc.h>
     11
     12#include <dt-bindings/power/r8a77990-sysc.h>
     13
     14#include "rcar-sysc.h"
     15
     16static struct rcar_sysc_area r8a77990_areas[] __initdata = {
     17	{ "always-on",	    0, 0, R8A77990_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
     18	{ "ca53-scu",	0x140, 0, R8A77990_PD_CA53_SCU,  R8A77990_PD_ALWAYS_ON,
     19	  PD_SCU },
     20	{ "ca53-cpu0",	0x200, 0, R8A77990_PD_CA53_CPU0, R8A77990_PD_CA53_SCU,
     21	  PD_CPU_NOCR },
     22	{ "ca53-cpu1",	0x200, 1, R8A77990_PD_CA53_CPU1, R8A77990_PD_CA53_SCU,
     23	  PD_CPU_NOCR },
     24	{ "cr7",	0x240, 0, R8A77990_PD_CR7,	R8A77990_PD_ALWAYS_ON },
     25	{ "a3vc",	0x380, 0, R8A77990_PD_A3VC,	R8A77990_PD_ALWAYS_ON },
     26	{ "a2vc1",	0x3c0, 1, R8A77990_PD_A2VC1,	R8A77990_PD_A3VC },
     27	{ "3dg-a",	0x100, 0, R8A77990_PD_3DG_A,	R8A77990_PD_ALWAYS_ON },
     28	{ "3dg-b",	0x100, 1, R8A77990_PD_3DG_B,	R8A77990_PD_3DG_A },
     29};
     30
     31/* Fixups for R-Car E3 ES1.0 revision */
     32static const struct soc_device_attribute r8a77990[] __initconst = {
     33	{ .soc_id = "r8a77990", .revision = "ES1.0" },
     34	{ /* sentinel */ }
     35};
     36
     37static int __init r8a77990_sysc_init(void)
     38{
     39	if (soc_device_match(r8a77990)) {
     40		/* Fix incorrect 3DG hierarchy */
     41		swap(r8a77990_areas[7], r8a77990_areas[8]);
     42		r8a77990_areas[7].parent = R8A77990_PD_ALWAYS_ON;
     43		r8a77990_areas[8].parent = R8A77990_PD_3DG_B;
     44	}
     45
     46	return 0;
     47}
     48
     49const struct rcar_sysc_info r8a77990_sysc_info __initconst = {
     50	.init = r8a77990_sysc_init,
     51	.areas = r8a77990_areas,
     52	.num_areas = ARRAY_SIZE(r8a77990_areas),
     53	.extmask_offs = 0x2f8,
     54	.extmask_val = BIT(0),
     55};