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| author | wdenk <wdenk> | 2002-11-03 00:38:21 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2002-11-03 00:38:21 +0000 |
| commit | fe8c2806cdba70479e351299881a395dc2be7785 (patch) | |
| tree | a1e8b98a1838cba6e6f5c765d9d85339257c45f5 /cpu/ppc4xx/kgdb.S | |
| parent | f9087a3213cc245cf9b90436475b5af822bd7579 (diff) | |
| download | u-boot-imx-fe8c2806cdba70479e351299881a395dc2be7785.zip u-boot-imx-fe8c2806cdba70479e351299881a395dc2be7785.tar.gz u-boot-imx-fe8c2806cdba70479e351299881a395dc2be7785.tar.bz2 | |
Initial revision
Diffstat (limited to 'cpu/ppc4xx/kgdb.S')
| -rw-r--r-- | cpu/ppc4xx/kgdb.S | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/cpu/ppc4xx/kgdb.S b/cpu/ppc4xx/kgdb.S new file mode 100644 index 0000000..78681cd --- /dev/null +++ b/cpu/ppc4xx/kgdb.S @@ -0,0 +1,78 @@ +/* + * 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 (CONFIG_COMMANDS & CFG_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,CFG_CACHELINE_SIZE-1 + andc r3,r3,r5 + subf r4,r3,r4 + add r4,r4,r5 + srwi. r4,r4,CFG_CACHELINE_SHIFT + beqlr + mtctr r4 + mr r6,r3 +1: dcbst 0,r3 + addi r3,r3,CFG_CACHELINE_SIZE + bdnz 1b + sync /* wait for dcbst's to get to ram */ + mtctr r4 +2: icbi 0,r6 + addi r6,r6,CFG_CACHELINE_SIZE + bdnz 2b + SYNC + blr + +#endif /* CFG_CMD_KGDB */ |