[PATCH] powerpc: Unify udbg (#2)

This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.

For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 10 insertions, 9 deletions

diff --git a/include/asm-powerpc/btext.h b/include/asm-powerpc/btext.h
index 71cce36bc630..906f46e31006 100644
--- a/include/asm-powerpc/btext.h
+++ b/include/asm-powerpc/btext.h
@@ -7,21 +7,22 @@
 #define __PPC_BTEXT_H
 #ifdef __KERNEL__
 
-extern void btext_clearscreen(void);
-extern void btext_flushscreen(void);
-
-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 int btext_find_display(int allow_nonstdout);
 extern void btext_update_display(unsigned long phys, int width, int height,
 				 int depth, int pitch);
+extern void btext_setup_display(int width, int height, int depth, int pitch,
+				unsigned long address);
+extern void btext_prepare_BAT(void);
+extern void btext_unmap(void);
 
 extern void btext_drawchar(char c);
 extern void btext_drawstring(const char *str);
 extern void btext_drawhex(unsigned long v);
+extern void btext_drawtext(const char *c, unsigned int len);
+
+extern void btext_clearscreen(void);
+extern void btext_flushscreen(void);
+extern void btext_flushline(void);
 
 #endif /* __KERNEL__ */
 #endif /* __PPC_BTEXT_H */