Add a common get_ram_size() function and modify the the

[kernel/u-boot.git] / board / cpu86 / cpu86.c

diff --git a/board/cpu86/cpu86.c b/board/cpu86/cpu86.c
index 9477a15..3eb5b35 100644 (file)
--- a/board/cpu86/cpu86.c
+++ b/board/cpu86/cpu86.c
@@ -213,13 +213,10 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
                          ulong orx, volatile uchar * base)
 {
        volatile uchar c = 0xff;
-       ulong cnt, val;
-       volatile ulong *addr;
        volatile uint *sdmr_ptr;
        volatile uint *orx_ptr;
+       ulong maxsize, size;
        int i;
-       ulong save[32];         /* to make test non-destructive */
-       ulong maxsize;
 
        /* 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
@@ -269,41 +266,11 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
        *sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
        *base = c;
 
-       /*
-        * Check memory range for valid RAM. A simple memory test determines
-        * the actually available RAM size between addresses `base' and
-        * `base + maxsize'. Some (not all) hardware errors are detected:
-        * - short between address lines
-        * - short between data lines
-        */
-       i = 0;
-       for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
-               addr = (volatile ulong *) base + cnt;   /* pointer arith! */
-               save[i++] = *addr;
-               *addr = ~cnt;
-       }
+       size = get_ram_size((long *)base, maxsize);
 
-       addr = (volatile ulong *) base;
-       save[i] = *addr;
-       *addr = 0;
+       *orx_ptr = orx | ~(size - 1);
 
-       if ((val = *addr) != 0) {
-               *addr = save[i];
-               return (0);
-       }
-
-       for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
-               addr = (volatile ulong *) base + cnt;   /* pointer arith! */
-               val = *addr;
-               *addr = save[--i];
-               if (val != ~cnt) {
-                       /* Write the actual size to ORx
-                        */
-                       *orx_ptr = orx | ~(cnt * sizeof (long) - 1);
-                       return (cnt * sizeof (long));
-               }
-       }
-       return (maxsize);
+       return (size);
 }
 
 long int initdram (int board_type)