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Diffstat (limited to 'src/mainboard/emulation/qemu-armv7/cbmem.c')
-rw-r--r--src/mainboard/emulation/qemu-armv7/cbmem.c48
1 files changed, 2 insertions, 46 deletions
diff --git a/src/mainboard/emulation/qemu-armv7/cbmem.c b/src/mainboard/emulation/qemu-armv7/cbmem.c
index 927bd42d54..542e08d05e 100644
--- a/src/mainboard/emulation/qemu-armv7/cbmem.c
+++ b/src/mainboard/emulation/qemu-armv7/cbmem.c
@@ -11,55 +11,11 @@
* GNU General Public License for more details.
*/
-#include <stddef.h>
#include <cbmem.h>
#include <symbols.h>
-#include <device/mmio.h>
-#include "mainboard.h"
-
-#define PATTERN1 0x55
-#define PATTERN2 0xaa
-
-/* Returns 1 if mebibyte mb is present and 0 otherwise. */
-static int probe_mb(int mb)
-{
- char *ptr = (char *) 0x60000000 + (mb << 20) + 0xfffff;
- char old;
- if (ptr < (char *) &_eprogram) {
- /* Don't probe below _end to avoid accidentally clobering
- oneself. */
- return 1;
- }
-
- old = read8(ptr);
- write8(ptr, PATTERN1);
- if (read8(ptr) != PATTERN1)
- return 0;
- write8(ptr, PATTERN2);
- if (read8(ptr) != PATTERN2)
- return 0;
- write8(ptr, old);
- return 1;
-}
-
-int probe_ramsize(void)
-{
- int i;
- int discovered = 0;
- static int saved_result;
- if (saved_result)
- return saved_result;
- /* Compact binary search. */
- /* 1 GiB is the largest supported RAM by this machine. */
- for (i = 9; i >= 0; i--)
- if (probe_mb(discovered | (1 << i)))
- discovered |= (1 << i);
- discovered++;
- saved_result = discovered;
- return discovered;
-}
+#include <ramdetect.h>
void *cbmem_top(void)
{
- return _dram + (probe_ramsize() << 20);
+ return _dram + (probe_ramsize((uintptr_t)_dram, CONFIG_DRAM_SIZE_MB) * MiB);
}