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efee1709 WD |
1 | /* |
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 <mpc8xx.h> | |
26 | #include <version.h> | |
27 | ||
28 | #define CONFIG_8xx 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 | |
44 | kgdb_flush_cache_all: | |
45 | lis r3, IDC_INVALL@h | |
46 | mtspr DC_CST, r3 | |
47 | sync | |
48 | lis r3, IDC_INVALL@h | |
49 | mtspr IC_CST, r3 | |
50 | SYNC | |
51 | blr | |
52 | ||
53 | .globl kgdb_flush_cache_range | |
54 | kgdb_flush_cache_range: | |
55 | li r5,CFG_CACHELINE_SIZE-1 | |
56 | andc r3,r3,r5 | |
57 | subf r4,r3,r4 | |
58 | add r4,r4,r5 | |
59 | srwi. r4,r4,CFG_CACHELINE_SHIFT | |
60 | beqlr | |
61 | mtctr r4 | |
62 | mr r6,r3 | |
63 | 1: dcbst 0,r3 | |
64 | addi r3,r3,CFG_CACHELINE_SIZE | |
65 | bdnz 1b | |
66 | sync /* wait for dcbst's to get to ram */ | |
67 | mtctr r4 | |
68 | 2: icbi 0,r6 | |
69 | addi r6,r6,CFG_CACHELINE_SIZE | |
70 | bdnz 2b | |
71 | SYNC | |
72 | blr | |
73 | ||
74 | #endif /* CFG_CMD_KGDB */ |