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wdenkefee1702002-07-20 20:14:13 +00001/*
2 * Copyright (C) 2000 Murray Jensen <Murray.Jensen@cmst.csiro.au>
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <config.h>
24#include <command.h>
25#include <mpc8260.h>
26#include <version.h>
27
28#define CONFIG_8260 1 /* needed for Linux kernel header files */
29#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
30
31#include <ppc_asm.tmpl>
32#include <ppc_defs.h>
33
34#include <asm/cache.h>
35#include <asm/mmu.h>
36
37#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
38
39 /*
40 * cache flushing routines for kgdb
41 */
42
43 .globl kgdb_flush_cache_all
44kgdb_flush_cache_all:
45 mfspr r3, HID0
46 ori r3, r3, HID0_ICFI|HID0_DCI /* Invalidate All */
47 SYNC
48 mtspr HID0, r3
49 blr
50
51 .globl kgdb_flush_cache_range
52kgdb_flush_cache_range:
53 li r5,CFG_CACHELINE_SIZE-1
54 andc r3,r3,r5
55 subf r4,r3,r4
56 add r4,r4,r5
57 srwi. r4,r4,CFG_CACHELINE_SHIFT
58 beqlr
59 mtctr r4
60 mr r6,r3
611: dcbst 0,r3
62 addi r3,r3,CFG_CACHELINE_SIZE
63 bdnz 1b
64 sync /* wait for dcbst's to get to ram */
65 mtctr r4
662: icbi 0,r6
67 addi r6,r6,CFG_CACHELINE_SIZE
68 bdnz 2b
69 SYNC
70 blr
71
72#endif /* CFG_CMD_KGDB */