ppc64: Rearrange btext initialization for consistency with ppc32

Moved init_boot_display from arch/ppc64/kernel/pmac_setup.c to
arch/ppc64/kernel/btext.c and declared it in asm-ppc64/btext.h.
Call it from init_early rather than pmac_init_early.
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc64/kernel/btext.c

@@ -18,6 +18,7 @@
 #include <asm/io.h>
 #include <asm/lmb.h>
 #include <asm/processor.h>
+#include <asm/udbg.h>
 
 #undef NO_SCROLL
 
@@ -131,6 +132,47 @@ int btext_initialize(struct device_node *np)
 	return 0;
 }
 
+static void btext_putc(unsigned char c)
+{
+	btext_drawchar(c);
+}
+
+void __init init_boot_display(void)
+{
+	char *name;
+	struct device_node *np = NULL; 
+	int rc = -ENODEV;
+
+	printk("trying to initialize btext ...\n");
+
+	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+	if (name != NULL) {
+		np = of_find_node_by_path(name);
+		if (np != NULL) {
+			if (strcmp(np->type, "display") != 0) {
+				printk("boot stdout isn't a display !\n");
+				of_node_put(np);
+				np = NULL;
+			}
+		}
+	}
+	if (np)
+		rc = btext_initialize(np);
+	if (rc) {
+		for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
+			if (get_property(np, "linux,opened", NULL)) {
+				printk("trying %s ...\n", np->full_name);
+				rc = btext_initialize(np);
+				printk("result: %d\n", rc);
+			}
+			if (rc == 0)
+				break;
+		}
+	}
+	if (rc == 0 && udbg_putc == NULL)
+		udbg_putc = btext_putc;
+}
+
 
 /* Calc the base address of a given point (x,y) */
 static unsigned char * calc_base(int x, int y)

arch/ppc64/kernel/pmac_setup.c

@@ -274,48 +274,6 @@ static void pmac_halt(void)
 	pmac_power_off();
 }
 
-#ifdef CONFIG_BOOTX_TEXT
-static void btext_putc(unsigned char c)
-{
-	btext_drawchar(c);
-}
-
-static void __init init_boot_display(void)
-{
-	char *name;
-	struct device_node *np = NULL; 
-	int rc = -ENODEV;
-
-	printk("trying to initialize btext ...\n");
-
-	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
-	if (name != NULL) {
-		np = of_find_node_by_path(name);
-		if (np != NULL) {
-			if (strcmp(np->type, "display") != 0) {
-				printk("boot stdout isn't a display !\n");
-				of_node_put(np);
-				np = NULL;
-			}
-		}
-	}
-	if (np)
-		rc = btext_initialize(np);
-	if (rc == 0)
-		return;
-
-	for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
-		if (get_property(np, "linux,opened", NULL)) {
-			printk("trying %s ...\n", np->full_name);
-			rc = btext_initialize(np);
-			printk("result: %d\n", rc);
-		}
-		if (rc == 0)
-			return;
-	}
-}
-#endif /* CONFIG_BOOTX_TEXT */
-
 /* 
  * Early initialization.
  */
@@ -333,13 +291,6 @@ static void __init pmac_init_early(void)
 		sccdbg = 1;
        		udbg_init_scc(NULL);
        	}
-#ifdef CONFIG_BOOTX_TEXT
-	else {
-		init_boot_display();
-
-		udbg_putc = btext_putc;
-	}
-#endif /* CONFIG_BOOTX_TEXT */
 
 	/* Setup interrupt mapping options */
 	ppc64_interrupt_controller = IC_OPEN_PIC;

arch/ppc64/kernel/setup.c

@@ -585,6 +585,10 @@ void __init setup_system(void)
 	 */
 	finish_device_tree();
 
+#ifdef CONFIG_BOOTX_TEXT
+	init_boot_display();
+#endif
+
 	/*
 	 * Initialize xmon
 	 */

include/asm-ppc64/btext.h

@@ -15,6 +15,7 @@ extern int boot_text_mapped;
 extern int btext_initialize(struct device_node *np);
 
 extern void map_boot_text(void);
+extern void init_boot_display(void);
 extern void btext_update_display(unsigned long phys, int width, int height,
 				 int depth, int pitch);