[POWERPC] Use udbg_early_init() on ppc32

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / btext.c

diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 6223d39177cb7c7bd9ee408be588e9cfa3d06014..3678997339d6270cfcf5065979965ab4bf15fefa 100644 (file)
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -3,7 +3,6 @@
  *
  * Benjamin Herrenschmidt <benh@kernel.crashing.org>
  */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
@@ -19,6 +18,7 @@
 #include <asm/io.h>
 #include <asm/lmb.h>
 #include <asm/processor.h>
+#include <asm/udbg.h>
 
 #define NO_SCROLL
 
@@ -112,7 +112,7 @@ void __init btext_setup_display(int width, int height, int depth, int pitch,
        logicalDisplayBase = (unsigned char *)address;
        dispDeviceBase = (unsigned char *)address;
        dispDeviceRowBytes = pitch;
-       dispDeviceDepth = depth;
+       dispDeviceDepth = depth == 15 ? 16 : depth;
        dispDeviceRect[0] = dispDeviceRect[1] = 0;
        dispDeviceRect[2] = width;
        dispDeviceRect[3] = height;
@@ -159,27 +159,35 @@ int btext_initialize(struct device_node *np)
 {
        unsigned int width, height, depth, pitch;
        unsigned long address = 0;
-       u32 *prop;
+       const u32 *prop;
 
-       prop = (u32 *)get_property(np, "width", NULL);
+       prop = get_property(np, "linux,bootx-width", NULL);
+       if (prop == NULL)
+               prop = get_property(np, "width", NULL);
        if (prop == NULL)
                return -EINVAL;
        width = *prop;
-       prop = (u32 *)get_property(np, "height", NULL);
+       prop = get_property(np, "linux,bootx-height", NULL);
+       if (prop == NULL)
+               prop = get_property(np, "height", NULL);
        if (prop == NULL)
                return -EINVAL;
        height = *prop;
-       prop = (u32 *)get_property(np, "depth", NULL);
+       prop = get_property(np, "linux,bootx-depth", NULL);
+       if (prop == NULL)
+               prop = get_property(np, "depth", NULL);
        if (prop == NULL)
                return -EINVAL;
        depth = *prop;
        pitch = width * ((depth + 7) / 8);
-       prop = (u32 *)get_property(np, "linebytes", NULL);
-       if (prop)
+       prop = get_property(np, "linux,bootx-linebytes", NULL);
+       if (prop == NULL)
+               prop = get_property(np, "linebytes", NULL);
+       if (prop && *prop != 0xffffffffu)
                pitch = *prop;
        if (pitch == 1)
                pitch = 0x1000;
-       prop = (u32 *)get_property(np, "address", NULL);
+       prop = get_property(np, "address", NULL);
        if (prop)
                address = *prop;
 
@@ -195,7 +203,7 @@ int btext_initialize(struct device_node *np)
        g_max_loc_Y = height / 16;
        dispDeviceBase = (unsigned char *)address;
        dispDeviceRowBytes = pitch;
-       dispDeviceDepth = depth;
+       dispDeviceDepth = depth == 15 ? 16 : depth;
        dispDeviceRect[0] = dispDeviceRect[1] = 0;
        dispDeviceRect[2] = width;
        dispDeviceRect[3] = height;
@@ -207,11 +215,11 @@ int btext_initialize(struct device_node *np)
 
 int __init btext_find_display(int allow_nonstdout)
 {
-       char *name;
+       const char *name;
        struct device_node *np = NULL; 
        int rc = -ENODEV;
 
-       name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+       name = get_property(of_chosen, "linux,stdout-path", NULL);
        if (name != NULL) {
                np = of_find_node_by_path(name);
                if (np != NULL) {
@@ -905,3 +913,11 @@ static unsigned char vga_font[cmapsz] = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00,
 };
+
+void __init udbg_init_btext(void)
+{
+       /* If btext is enabled, we might have a BAT setup for early display,
+        * thus we do enable some very basic udbg output
+        */
+       udbg_putc = btext_drawchar;
+}