diff options
Diffstat (limited to 'roms/u-boot/arch/powerpc/cpu/74xx_7xx/kgdb.S')
| -rw-r--r-- | roms/u-boot/arch/powerpc/cpu/74xx_7xx/kgdb.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/roms/u-boot/arch/powerpc/cpu/74xx_7xx/kgdb.S b/roms/u-boot/arch/powerpc/cpu/74xx_7xx/kgdb.S new file mode 100644 index 00000000..42b3a760 --- /dev/null +++ b/roms/u-boot/arch/powerpc/cpu/74xx_7xx/kgdb.S @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2000 Murray Jensen <Murray.Jensen@cmst.csiro.au> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <command.h> +#include <74xx_7xx.h> +#include <version.h> + +#include <ppc_asm.tmpl> +#include <ppc_defs.h> + +#include <asm/cache.h> +#include <asm/mmu.h> + +#if defined(CONFIG_CMD_KGDB) + + /* + * cache flushing routines for kgdb + */ + + .globl kgdb_flush_cache_all +kgdb_flush_cache_all: + lis r3,0 + addis r4,r0,0x0040 +kgdb_flush_loop: + lwz r5,0(r3) + addi r3,r3,CONFIG_SYS_CACHELINE_SIZE + cmp 0,0,r3,r4 + bne kgdb_flush_loop + SYNC + mfspr r3,1008 + ori r3,r3,0x8800 + mtspr 1008,r3 + sync + blr + + .globl kgdb_flush_cache_range +kgdb_flush_cache_range: + li r5,CONFIG_SYS_CACHELINE_SIZE-1 + andc r3,r3,r5 + subf r4,r3,r4 + add r4,r4,r5 + srwi. r4,r4,CONFIG_SYS_CACHELINE_SHIFT + beqlr + mtctr r4 + mr r6,r3 +1: dcbst 0,r3 + addi r3,r3,CONFIG_SYS_CACHELINE_SIZE + bdnz 1b + sync /* wait for dcbst's to get to ram */ + mtctr r4 +2: icbi 0,r6 + addi r6,r6,CONFIG_SYS_CACHELINE_SIZE + bdnz 2b + SYNC + blr + +#endif |