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-rw-r--r--board/atc/atc.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/board/atc/atc.c b/board/atc/atc.c
index 9aa942f..fad7646 100644
--- a/board/atc/atc.c
+++ b/board/atc/atc.c
@@ -269,7 +269,7 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
ulong orx, volatile uchar * base)
{
volatile uchar c = 0xff;
- ulong cnt, val;
+ ulong cnt, val, size;
volatile ulong *addr;
volatile uint *sdmr_ptr;
volatile uint *orx_ptr;
@@ -344,7 +344,13 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
*addr = 0;
if ((val = *addr) != 0) {
+ /* Restore the original data before leaving the function.
+ */
*addr = save[i];
+ for (cnt = 1; cnt <= maxsize / sizeof(long); cnt <<= 1) {
+ addr = (volatile ulong *) base + cnt;
+ *addr = save[--i];
+ }
return (0);
}
@@ -353,10 +359,17 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
val = *addr;
*addr = save[--i];
if (val != ~cnt) {
+ size = cnt * sizeof (long);
+ /* Restore the original data before returning
+ */
+ for (cnt <<= 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
+ addr = (volatile ulong *) base + cnt;
+ *addr = save[--i];
+ }
/* Write the actual size to ORx
*/
- *orx_ptr = orx | ~(cnt * sizeof (long) - 1);
- return (cnt * sizeof (long));
+ *orx_ptr = orx | ~(size - 1);
+ return (size);
}
}
return (maxsize);