diff options
| -rw-r--r-- | lib_ppc/cache.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib_ppc/cache.c b/lib_ppc/cache.c index 1292b71e6e..338b08bd77 100644 --- a/lib_ppc/cache.c +++ b/lib_ppc/cache.c @@ -33,14 +33,16 @@ void flush_cache(ulong start_addr, ulong size) start = start_addr & ~(CONFIG_SYS_CACHELINE_SIZE - 1); end = start_addr + size - 1; - for (addr = start; addr <= end; addr += CONFIG_SYS_CACHELINE_SIZE) { + for (addr = start; (addr <= end) && (addr >= start); + addr += CONFIG_SYS_CACHELINE_SIZE) { asm volatile("dcbst 0,%0" : : "r" (addr) : "memory"); WATCHDOG_RESET(); } /* wait for all dcbst to complete on bus */ asm volatile("sync" : : : "memory"); - for (addr = start; addr <= end; addr += CONFIG_SYS_CACHELINE_SIZE) { + for (addr = start; (addr <= end) && (addr >= start); + addr += CONFIG_SYS_CACHELINE_SIZE) { asm volatile("icbi 0,%0" : : "r" (addr) : "memory"); WATCHDOG_RESET(); } |