Author: rminnich
Date: 2006-09-13 03:57:47 +0200 (Wed, 13 Sep 2006)
New Revision: 2404
Modified:
trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c
trunk/LinuxBIOSv2/src/northbridge/amd/lx/raminit.c
Log:
warm boot patch from richard smith.
signed-off-by: Ronald G. Minnich
Modified: trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c
===================================================================
--- trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c 2006-09-13 01:14:45 UTC
(rev 2403)
+++ trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c 2006-09-13 01:57:47 UTC
(rev 2404)
@@ -94,6 +94,17 @@
msr.lo = 0x8ea0ad6a;
wrmsr(0x4c00000f, msr);
- /* DRAM working now?? */
+ /* Fixes from Jordan Crouse of AMD. */
+ /* make sure there is nothing stale in the cache */
+ __asm__("wbinvd\n");
+
+ print_debug("RAM DLL lock\r\n");
+ /* The RAM dll needs a write to lock on so generate a few dummy writes
*/
+ volatile unsigned long *ptr;
+ for (i=0;i<5;i++) {
+ ptr = (void *)i;
+ *ptr = (unsigned long)i;
+ }
+
}
Modified: trunk/LinuxBIOSv2/src/northbridge/amd/lx/raminit.c
===================================================================
--- trunk/LinuxBIOSv2/src/northbridge/amd/lx/raminit.c 2006-09-13 01:14:45 UTC
(rev 2403)
+++ trunk/LinuxBIOSv2/src/northbridge/amd/lx/raminit.c 2006-09-13 01:57:47 UTC
(rev 2404)
@@ -135,6 +135,17 @@
print_debug("DRAM controller init done.\r\n");
- /* DRAM working now?? */
+ /* Fixes from Jordan Crouse of AMD. */
+ /* make sure there is nothing stale in the cache */
+ __asm__("wbinvd\n");
+
+ print_debug("RAM DLL lock\r\n");
+ /* The RAM dll needs a write to lock on so generate a few dummy writes
*/
+ volatile unsigned long *ptr;
+ for (i=0;i<5;i++) {
+ ptr = (void *)i;
+ *ptr = (unsigned long)i;
+ }
+
}
--
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