Michal Simek | 76316a3 | 2007-03-11 13:42:58 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2007 Michal Simek |
| 3 | * |
Michal Simek | db14d77 | 2007-09-24 00:18:46 +0200 | [diff] [blame] | 4 | * Michal SIMEK <monstr@monstr.eu> |
Michal Simek | 76316a3 | 2007-03-11 13:42:58 +0100 | [diff] [blame] | 5 | * |
| 6 | * See file CREDITS for list of people who contributed to this |
| 7 | * project. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * the License, or (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 22 | * MA 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | #include <common.h> |
Michal Simek | fb05f6d | 2007-05-07 23:58:31 +0200 | [diff] [blame] | 26 | #include <asm/asm.h> |
Michal Simek | 76316a3 | 2007-03-11 13:42:58 +0100 | [diff] [blame] | 27 | |
Michal Simek | 76316a3 | 2007-03-11 13:42:58 +0100 | [diff] [blame] | 28 | int dcache_status (void) |
| 29 | { |
| 30 | int i = 0; |
| 31 | int mask = 0x80; |
| 32 | __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory"); |
| 33 | /* i&=0x80 */ |
| 34 | __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory"); |
| 35 | return i; |
| 36 | } |
| 37 | |
| 38 | int icache_status (void) |
| 39 | { |
| 40 | int i = 0; |
| 41 | int mask = 0x20; |
| 42 | __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory"); |
| 43 | /* i&=0x20 */ |
| 44 | __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory"); |
| 45 | return i; |
| 46 | } |
Michal Simek | f3f001a | 2007-05-07 19:25:08 +0200 | [diff] [blame] | 47 | |
| 48 | void icache_enable (void) { |
Michal Simek | fb05f6d | 2007-05-07 23:58:31 +0200 | [diff] [blame] | 49 | MSRSET(0x20); |
Michal Simek | f3f001a | 2007-05-07 19:25:08 +0200 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | void icache_disable(void) { |
Michal Simek | 8ff972c | 2010-04-16 12:56:33 +0200 | [diff] [blame] | 53 | /* we are not generate ICACHE size -> flush whole cache */ |
| 54 | flush_cache(0, 32768); |
Michal Simek | fb05f6d | 2007-05-07 23:58:31 +0200 | [diff] [blame] | 55 | MSRCLR(0x20); |
Michal Simek | f3f001a | 2007-05-07 19:25:08 +0200 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | void dcache_enable (void) { |
Michal Simek | fb05f6d | 2007-05-07 23:58:31 +0200 | [diff] [blame] | 59 | MSRSET(0x80); |
Michal Simek | f3f001a | 2007-05-07 19:25:08 +0200 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | void dcache_disable(void) { |
Michal Simek | 8ff972c | 2010-04-16 12:56:33 +0200 | [diff] [blame] | 63 | #ifdef XILINX_USE_DCACHE |
| 64 | #ifdef XILINX_DCACHE_BYTE_SIZE |
| 65 | flush_cache(0, XILINX_DCACHE_BYTE_SIZE); |
| 66 | #else |
| 67 | #warning please rebuild BSPs and update configuration |
| 68 | flush_cache(0, 32768); |
| 69 | #endif |
| 70 | #endif |
Michal Simek | fb05f6d | 2007-05-07 23:58:31 +0200 | [diff] [blame] | 71 | MSRCLR(0x80); |
Michal Simek | f3f001a | 2007-05-07 19:25:08 +0200 | [diff] [blame] | 72 | } |
Michal Simek | 8ff972c | 2010-04-16 12:56:33 +0200 | [diff] [blame] | 73 | |
| 74 | void flush_cache (ulong addr, ulong size) |
| 75 | { |
| 76 | int i; |
| 77 | for (i = 0; i < size; i += 4) |
| 78 | asm volatile ( |
| 79 | #ifdef CONFIG_ICACHE |
| 80 | "wic %0, r0;" |
| 81 | #endif |
| 82 | "nop;" |
| 83 | #ifdef CONFIG_DCACHE |
| 84 | "wdc.flush %0, r0;" |
| 85 | #endif |
| 86 | "nop;" |
| 87 | : |
| 88 | : "r" (addr + i) |
| 89 | : "memory"); |
| 90 | } |