Changeset 7dcde32 in mainline for arch/ppc32/loader/ofw.c

Timestamp:

2006-03-24T18:29:04Z (19 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

c6143b4

Parents:

f941347

Message:

extend boot info

File:

• arch/ppc32/loader/ofw.c (modified) (4 diffs)

arch/ppc32/loader/ofw.c

@@ -32 +32 @@
 
 #define MAX_OFW_ARGS    10
+#define STRING_SIZE             1024
 
 typedef unsigned int ofw_arg_t;
@@ -53 +54 @@
 
 phandle ofw_chosen;
+phandle ofw_aliases;
 ihandle ofw_mmu;
 ihandle ofw_stdout;
@@ -107 +109 @@
                 ofw_stdout = 0;
         
+        ofw_aliases = ofw_find_device("/aliases");
+        if (ofw_aliases == -1) {
+                puts("\nUnable to find /aliases device\n");
+                halt();
+        }
+        
         ofw_mmu = ofw_open("/mmu");
         if (ofw_mmu == -1) {
-                puts("Unable to open /mmu node\n");
+                puts("\nUnable to open /mmu node\n");
                 halt();
         }
@@ -158 +166 @@
         }
 }
+
+
+int ofw_screen(screen_t *screen)
+{
+        char device_name[STRING_SIZE];
+        
+        if (ofw_get_property(ofw_aliases, "screen", device_name, STRING_SIZE) <= 0)
+                return false;
+        
+        phandle device = ofw_find_device(device_name);
+        if (device == -1)
+                return false;
+        
+        if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
+                return false;
+        
+        if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
+                return false;
+        
+        if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
+                return false;
+        
+        if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
+                return false;
+        
+        if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
+                return false;
+        
+        return true;
+}