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| author | Ronald G. Minnich <Ronald G. Minnich> | 2006-09-13 01:57:47 +0000 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2006-09-13 01:57:47 +0000 |
| commit | aefa3d74f950ad684fceed55d4c955593d33a14a (patch) | |
| tree | ec3662f6c03f2de21659f97dd224b1fcc4869c14 /src/northbridge/amd/lx/raminit.c | |
| parent | 5ef4c598fb76a490a8a57455c244a8be03c7097e (diff) | |
| download | coreboot-aefa3d74f950ad684fceed55d4c955593d33a14a.tar.xz | |
warm boot patch from richard smith.
signed-off-by: Ronald G. Minnich
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2404 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge/amd/lx/raminit.c')
| -rw-r--r-- | src/northbridge/amd/lx/raminit.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/northbridge/amd/lx/raminit.c b/src/northbridge/amd/lx/raminit.c index d4a5d7b701..3aeea646c1 100644 --- a/src/northbridge/amd/lx/raminit.c +++ b/src/northbridge/amd/lx/raminit.c @@ -135,6 +135,17 @@ static void sdram_enable(int controllers, const struct mem_controller *ctrl) 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; + } } |