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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prcm_mpu44xx.c (1293B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * OMAP4 PRCM_MPU module functions
      4 *
      5 * Copyright (C) 2009 Nokia Corporation
      6 * Paul Walmsley
      7 */
      8
      9#include <linux/kernel.h>
     10#include <linux/types.h>
     11#include <linux/errno.h>
     12#include <linux/err.h>
     13#include <linux/io.h>
     14
     15#include "iomap.h"
     16#include "common.h"
     17#include "prcm_mpu44xx.h"
     18#include "cm-regbits-44xx.h"
     19
     20/*
     21 * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP
     22 *   block registers
     23 */
     24struct omap_domain_base prcm_mpu_base;
     25
     26/* PRCM_MPU low-level functions */
     27
     28u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
     29{
     30	return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
     31}
     32
     33void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
     34{
     35	writel_relaxed(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
     36}
     37
     38u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
     39{
     40	u32 v;
     41
     42	v = omap4_prcm_mpu_read_inst_reg(inst, reg);
     43	v &= ~mask;
     44	v |= bits;
     45	omap4_prcm_mpu_write_inst_reg(v, inst, reg);
     46
     47	return v;
     48}
     49
     50/**
     51 * omap2_set_globals_prcm_mpu - set the MPU PRCM base address (for early use)
     52 * @prcm_mpu: PRCM_MPU base virtual address
     53 *
     54 * XXX Will be replaced when the PRM/CM drivers are completed.
     55 */
     56void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
     57{
     58	prcm_mpu_base.va = prcm_mpu;
     59}