1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c
index e42e12489f6d..cd9d4cc26954 100644
--- a/drivers/video/geode/lxfb_ops.c
+++ b/drivers/video/geode/lxfb_ops.c
@@ -329,6 +329,22 @@ unsigned int lx_framebuffer_size(void)
 {
         unsigned int val;
 
+        if (!geode_has_vsa2()) {
+                uint32_t hi, lo;
+
+                /* The number of pages is (PMAX - PMIN)+1 */
+                rdmsr(MSR_GLIU_P2D_RO0, lo, hi);
+
+                /* PMAX */
+                val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
+                /* PMIN */
+                val -= (lo & 0x000fffff);
+                val += 1;
+
+                /* The page size is 4k */
+                return (val << 12);
+        }
+
         /* The frame buffer size is reported by a VSM in VSA II */
         /* Virtual Register Class    = 0x02                     */
         /* VG_MEM_SIZE (1MB units)   = 0x00                     */