diff options
Diffstat (limited to 'board/tqm8260/tqm8260.c')
| -rw-r--r-- | board/tqm8260/tqm8260.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/board/tqm8260/tqm8260.c b/board/tqm8260/tqm8260.c index 556a1e3..a0a38ca 100644 --- a/board/tqm8260/tqm8260.c +++ b/board/tqm8260/tqm8260.c @@ -230,7 +230,7 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr, volatile uint *orx_ptr; int i; ulong save[32]; /* to make test non-destructive */ - ulong maxsize; + ulong maxsize, size; /* We must be able to test a location outsize the maximum legal size * to find out THAT we are outside; but this address still has to be @@ -299,7 +299,13 @@ 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); } @@ -308,10 +314,17 @@ 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 leaving the function. + */ + 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); |