| /* | |
| * (C) Copyright 2004 Texas Insturments | |
| * | |
| * (C) Copyright 2002 | |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
| * Marius Groeger <[email protected]> | |
| * | |
| * (C) Copyright 2002 | |
| * Gary Jennejohn, DENX Software Engineering, <[email protected]> | |
| * | |
| * 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)); | |
| } |