/* * Copyright (C) 2000 Murray Jensen <Murray.Jensen@cmst.csiro.au> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <config.h> #include <command.h> #include <ppc4xx.h> #include <version.h> #define CONFIG_405GP 1 /* needed for Linux kernel header files */ #define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */ #include <ppc_asm.tmpl> #include <ppc_defs.h> #include <asm/cache.h> #include <asm/mmu.h> #if defined(CONFIG_CMD_KGDB) /* * cache flushing routines for kgdb */ .globl kgdb_flush_cache_all kgdb_flush_cache_all: /* icache */ iccci r0,r0 /* iccci invalidates the entire I cache */ /* dcache */ addi r6,0,0x0000 /* clear GPR 6 */ addi r7,r0, 128 /* do loop for # of dcache lines */ /* NOTE: dccci invalidates both */ mtctr r7 /* ways in the D cache */ ..dcloop: dccci 0,r6 /* invalidate line */ addi r6,r6, 32 /* bump to next line */ bdnz ..dcloop blr .globl kgdb_flush_cache_range kgdb_flush_cache_range: li r5,L1_CACHE_BYTES-1 andc r3,r3,r5 subf r4,r3,r4 add r4,r4,r5 srwi. r4,r4,L1_CACHE_SHIFT beqlr mtctr r4 mr r6,r3 1: dcbst 0,r3 addi r3,r3,L1_CACHE_BYTES bdnz 1b sync /* wait for dcbst's to get to ram */ mtctr r4 2: icbi 0,r6 addi r6,r6,L1_CACHE_BYTES bdnz 2b SYNC blr #endif