1 /* 2 * (C) Copyright 2011 3 * Ilya Yanok, EmCraft Systems 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc. 21 */ 22 #include <linux/types.h> 23 #include <common.h> 24 25 #ifndef CONFIG_SYS_DCACHE_OFF 26 static inline void dcache_noop(void) 27 { 28 if (dcache_status()) { 29 puts("WARNING: cache operations are not implemented!\n" 30 "WARNING: disabling D-Cache now, you can re-enable it" 31 "later with 'dcache on' command\n"); 32 dcache_disable(); 33 } 34 } 35 36 void invalidate_dcache_all(void) 37 { 38 dcache_noop(); 39 } 40 41 void invalidate_dcache_range(unsigned long start, unsigned long stop) 42 { 43 dcache_noop(); 44 } 45 46 void flush_dcache_range(unsigned long start, unsigned long stop) 47 { 48 dcache_noop(); 49 } 50 #else /* #ifndef CONFIG_SYS_DCACHE_OFF */ 51 void invalidate_dcache_all(void) 52 { 53 } 54 55 void flush_dcache_all(void) 56 { 57 } 58 59 void invalidate_dcache_range(unsigned long start, unsigned long stop) 60 { 61 } 62 63 void flush_dcache_range(unsigned long start, unsigned long stop) 64 { 65 } 66 67 void flush_cache(unsigned long start, unsigned long size) 68 { 69 } 70 #endif /* #ifndef CONFIG_SYS_DCACHE_OFF */ 71 72 /* 73 * Stub implementations for l2 cache operations 74 */ 75 void __l2_cache_disable(void) 76 { 77 } 78 void l2_cache_disable(void) 79 __attribute__((weak, alias("__l2_cache_disable"))); 80