Commit 138105ef authored by Yuri Tikhonov's avatar Yuri Tikhonov Committed by Wolfgang Denk
Browse files

ppc flush_cache: add watch-dog triggering into the loops.



Some boards (e.g. lwmon5) need rather a frequent watch-dog
kicking. Since the time it takes for the flush_cache() function
to complete its job depends on the size of data being flushed, one
may encounter watch-dog resets on such boards when, for example,
download big files over ethernet.
Signed-off-by: default avatarYuri Tikhonov <yur@emcraft.com>
parent 18ec19e4
......@@ -23,6 +23,7 @@
#include <common.h>
#include <asm/cache.h>
#include <watchdog.h>
void flush_cache (ulong start_addr, ulong size)
{
......@@ -35,6 +36,7 @@ void flush_cache (ulong start_addr, ulong size)
addr < end_addr;
addr += CFG_CACHELINE_SIZE) {
asm ("dcbst 0,%0": :"r" (addr));
WATCHDOG_RESET();
}
asm ("sync"); /* Wait for all dcbst to complete on bus */
......@@ -42,6 +44,7 @@ void flush_cache (ulong start_addr, ulong size)
addr < end_addr;
addr += CFG_CACHELINE_SIZE) {
asm ("icbi 0,%0": :"r" (addr));
WATCHDOG_RESET();
}
}
asm ("sync"); /* Always flush prefetch queue in any case */
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment