/* * (C) Copyright 2004 Texas Insturments * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> * * SPDX-License-Identifier: GPL-2.0+ */ /* * CPU specific code */ #include <common.h> #include <command.h> #include <asm/system.h> static void cache_flush (void); int cleanup_before_linux (void) { /* * this function is called just before we call linux * it prepares the processor for linux * * we turn off caches etc ... */ disable_interrupts (); /* turn off I/D-cache */ icache_disable(); dcache_disable(); /* flush I/D-cache */ cache_flush(); return 0; } /* flush I/D-cache */ static void cache_flush (void) { /* invalidate both caches and flush btb */ asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (0)); /* mem barrier to sync things */ asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (0)); }