Changeset fd375a8d in mainline for boot/genarch/ofw.c

Timestamp:

2009-02-03T13:50:26Z (16 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

753d851

Parents:

eddf924

Message:

more exact RGB323 palette calculation
set the RGB323 palette on ppc32

File:

• boot/genarch/ofw.c (modified) (4 diffs)

boot/genarch/ofw.c

@@ -26 +26 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
- 
+
 #include <ofw.h>
 #include <ofwarch.h>
@@ -373 +373 @@
 }
 
+#define RED(i)    (((i) >> 5) & ((1 << 3) - 1))
+#define GREEN(i)  (((i) >> 3) & ((1 << 2) - 1))
+#define BLUE(i)   ((i) & ((1 << 3) - 1))
+#define CLIP(i)   ((i) <= 255 ? (i) : 255)
+
+
 /**
  * Sets up the palette for the 8-bit color depth configuration so that the
  * 3:2:3 color scheme can be used. Checks that setting the palette makes sense
  * (appropriate nodes exist in the OBP tree and the color depth is not greater
- * than 8). 
- *
- * @return      true if the palette has been set, false otherwise
+ * than 8).
+ *
+ * @return true if the palette has been set, false otherwise
+ *
  */
-int setup_palette(void)
+int ofw_setup_palette(void)
 {
         char device_name[BUF_SIZE];
@@ -387 +394 @@
         /* resolve alias */
         if (ofw_get_property(ofw_aliases, "screen", device_name,
-                sizeof(device_name)) <= 0)
-                return false;
-
+            sizeof(device_name)) <= 0)
+                return false;
+        
         /* for depth greater than 8 it makes no sense to set up the palette */
         uint32_t depth;
@@ -404 +411 @@
         if (screen == -1)
                 return false;
-
+        
         /* setup the palette so that the (inverted) 3:2:3 scheme is usable */
         unsigned int i;
         for (i = 0; i < 256; i++)
-                if (ofw_call("call-method", 6, 1, NULL, "color!", screen,
-                        255 - i,
-                        i << 5,
-                        (i >> 3) << 6,
-                        (i >> 5) << 5) != 0); 
+                ofw_call("call-method", 6, 1, NULL, "color!", screen,
+                    255 - i, CLIP(BLUE(i) * 37), GREEN(i) * 85, CLIP(RED(i) * 37));
         return true;
 }