powerpc: Unify udbg

Index: linux-serialfix/arch/powerpc/kernel/udbg.c
===================================================================
@@ -16,8 +16,8 @@
 #include <linux/console.h>
 #include <asm/processor.h>
 
-void (*udbg_putc)(unsigned char c);
-unsigned char (*udbg_getc)(void);
+void (*udbg_putc)(char c);
+char (*udbg_getc)(void);
 int (*udbg_getc_poll)(void);
 
 /* udbg library, used by xmon et al */

@@ -78,7 +78,7 @@
 #define UDBG_BUFSIZE 256
 void udbg_printf(const char *fmt, ...)
 {
-	unsigned char buf[UDBG_BUFSIZE];
+	char buf[UDBG_BUFSIZE];
 	va_list args;
 
 	va_start(args, fmt);

@@ -116,6 +116,8 @@
 /* called by setup_system */
 void register_early_udbg_console(void)
 {
+	if (early_console_initialized)
+		return;
 	early_console_initialized = 1;
 	register_console(&udbg_console);
 }

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Index: linux-serialfix/arch/powerpc/kernel/setup_32.c
===================================================================
@@ -40,6 +40,7 @@
 #include <asm/xmon.h>
 #include <asm/time.h>
 #include <asm/serial.h>
+#include <asm/udbg.h>
 
 #include "setup.h"
 

@@ -294,21 +295,11 @@
 
 	smp_setup_cpu_maps();
 
-#ifdef CONFIG_BOOTX_TEXT
-	init_boot_display();
-#endif
-
-#ifdef CONFIG_PPC_PMAC
-	/* This could be called "early setup arch", it must be done
-	 * now because xmon need it
-	 */
-	if (_machine == _MACH_Pmac)
-		pmac_feature_init();	/* New cool way */
-#endif
-
 #ifdef CONFIG_XMON_DEFAULT
 	xmon_init(1);
 #endif
+	/* Register early console */
+	register_early_udbg_console();
 
 #if defined(CONFIG_KGDB)
 	if (ppc_md.kgdb_map_scc)

Index: linux-serialfix/arch/powerpc/kernel/udbg_16550.c
===================================================================
@@ -47,7 +47,7 @@
 
 static volatile struct NS16550 __iomem *udbg_comport;
 
-static void udbg_550_putc(unsigned char c)
+static void udbg_550_putc(char c)
 {
 	if (udbg_comport) {
 		while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)

@@ -69,7 +69,7 @@
 	return -1;
 }
 
-static unsigned char udbg_550_getc(void)
+static char udbg_550_getc(void)
 {
 	if (udbg_comport) {
 		while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)

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Index: linux-serialfix/arch/powerpc/xmon/start.c
===================================================================
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+#include <asm/machdep.h>
+#include <asm/udbg.h>
+#include "nonstdio.h"
+
+void xmon_map_scc(void)
+{
+}
+
+int xmon_write(void *ptr, int nb)
+{
+	return udbg_write(ptr, nb);
+}
+
+int xmon_readchar(void)
+{
+	if (udbg_getc)
+		return udbg_getc();
+	return -1;
+}
+
+int xmon_read_poll(void)
+{
+	if (udbg_getc_poll)
+		return udbg_getc_poll();
+	return -1;
+}

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Index: linux-serialfix/arch/powerpc/xmon/start_64.c
===================================================================
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 1996 Paul Mackerras.
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-#include <asm/machdep.h>
-#include <asm/udbg.h>
-#include "nonstdio.h"
-
-void xmon_map_scc(void)
-{
-}
-
-int xmon_write(void *ptr, int nb)
-{
-	return udbg_write(ptr, nb);
-}
-
-int xmon_readchar(void)
-{
-	if (udbg_getc)
-		return udbg_getc();
-	return -1;
-}
-
-int xmon_read_poll(void)
-{
-	if (udbg_getc_poll)
-		return udbg_getc_poll();
-	return -1;
-}

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Index: linux-serialfix/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 */

Index: linux-serialfix/include/asm-powerpc/udbg.h
===================================================================
@@ -13,8 +13,8 @@
 #include <linux/compiler.h>
 #include <linux/init.h>
 
-extern void (*udbg_putc)(unsigned char c);
-extern unsigned char (*udbg_getc)(void);
+extern void (*udbg_putc)(char c);
+extern char (*udbg_getc)(void);
 extern int (*udbg_getc_poll)(void);
 
 extern void udbg_puts(const char *s);

@@ -30,5 +30,8 @@
 					  unsigned int clock);
 
 struct device_node;
-extern void udbg_init_scc(struct device_node *np);
+extern void udbg_scc_init(int force_scc);
+extern int udbg_adb_init(int force_btext);
+extern void udbg_adb_init_early(void);
+
 #endif /* _ASM_POWERPC_UDBG_H */

Index: linux-serialfix/arch/powerpc/kernel/setup_64.c
===================================================================
@@ -466,10 +466,6 @@
 	 */
 	finish_device_tree();
 
-#ifdef CONFIG_BOOTX_TEXT
-	init_boot_display();
-#endif
-
 	/*
 	 * Initialize xmon
 	 */

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Index: linux-serialfix/arch/powerpc/platforms/powermac/low_i2c.c
===================================================================
@@ -36,7 +36,7 @@
 
 #ifdef DEBUG
 #define DBG(x...) do {\
-		printk(KERN_DEBUG "KW:" x);	\
+		printk(KERN_DEBUG "low_i2c:" x);	\
 	} while(0)
 #else
 #define DBG(x...)

@@ -342,7 +342,7 @@
 static void keywest_low_i2c_add(struct device_node *np)
 {
 	struct low_i2c_host	*host = find_low_i2c_host(NULL);
-	u32			*psteps, *prate, steps, aoffset = 0;
+	u32			*psteps, *prate, *addrp, steps;
 	struct device_node	*parent;
 
 	if (host == NULL) {

@@ -352,6 +352,16 @@
 	}
 	memset(host, 0, sizeof(*host));
 
+	/* Apple is kind enough to provide a valid AAPL,address property
+	 * on all i2c keywest nodes so far ... we would have to fallback
+	 * to macio parsing if that wasn't the case
+	 */
+	addrp = (u32 *)get_property(np, "AAPL,address", NULL);
+	if (addrp == NULL) {
+		printk(KERN_ERR "low_i2c: Can't find address for %s\n",
+		       np->full_name);
+		return;
+	}
 	init_MUTEX(&host->mutex);
 	host->np = of_node_get(np);	
 	psteps = (u32 *)get_property(np, "AAPL,address-step", NULL);

@@ -360,12 +370,10 @@
 		steps >>= 1;
 	parent = of_get_parent(np);
 	host->num_channels = 1;
-	if (parent && parent->name[0] == 'u') {
+	if (parent && parent->name[0] == 'u')
 		host->num_channels = 2;
-		aoffset = 3;
-	}
 	/* Select interface rate */
-	host->speed = KW_I2C_MODE_100KHZ;
+	host->speed = KW_I2C_MODE_25KHZ;
 	prate = (u32 *)get_property(np, "AAPL,i2c-rate", NULL);
 	if (prate) switch(*prate) {
 	case 100:

@@ -379,9 +387,12 @@
 		break;
 	}	
 
+	printk(KERN_INFO "low_i2c: Bus %s found at 0x%08x, %d channels,"
+	       " speed = %d KHz\n",
+	       np->full_name, *addrp, host->num_channels, prate ? *prate : 25);
+
 	host->mode = pmac_low_i2c_mode_std;
-	host->base = ioremap(np->addrs[0].address + aoffset,
-						np->addrs[0].size);
+	host->base = ioremap((*addrp), 0x1000);
 	host->func = keywest_low_i2c_func;
 }
 

Index: linux-serialfix/arch/powerpc/platforms/powermac/pic.c
===================================================================
@@ -459,7 +459,7 @@
 			mpic_setup_cascade(irqctrler2->intrs[0].line,
 					   pmac_u3_cascade, mpic2);
 		}
-#if defined(CONFIG_XMON) && defined(CONFIG_PPC32)
+#ifdef CONFIG_XMON
 		{
 			struct device_node* pswitch;
 			int nmi_irq;

Index: linux-serialfix/arch/powerpc/platforms/pseries/lpar.c
===================================================================
@@ -61,7 +61,7 @@
 int vtermno;	/* virtual terminal# for udbg  */
 
 #define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
-static void udbg_hvsi_putc(unsigned char c)
+static void udbg_hvsi_putc(char c)
 {
 	/* packet's seqno isn't used anyways */
 	uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c };

@@ -112,7 +112,7 @@
 	return ch;
 }
 
-static unsigned char udbg_hvsi_getc(void)
+static char udbg_hvsi_getc(void)
 {
 	int ch;
 	for (;;) {

@@ -128,7 +128,7 @@
 	}
 }
 
-static void udbg_putcLP(unsigned char c)
+static void udbg_putcLP(char c)
 {
 	char buf[16];
 	unsigned long rc;

@@ -173,7 +173,7 @@
 	return ch;
 }
 
-static unsigned char udbg_getcLP(void)
+static char udbg_getcLP(void)
 {
 	int ch;
 	for (;;) {

Index: linux-serialfix/arch/powerpc/mm/init_32.c
===================================================================
@@ -188,6 +188,11 @@
 
 	if (ppc_md.progress)
 		ppc_md.progress("MMU:exit", 0x211);
+
+	/* From now on, btext is no longer BAT mapped if it was at all */
+#ifdef CONFIG_BOOTX_TEXT
+	btext_unmap();
+#endif
 }
 
 /* This is only called until mem_init is done. */

Index: linux-serialfix/drivers/i2c/busses/i2c-keywest.c
===================================================================
@@ -505,16 +505,23 @@
 create_iface(struct device_node *np, struct device *dev)
 {
 	unsigned long steps;
-	unsigned bsteps, tsize, i, nchan, addroffset;
+	unsigned bsteps, tsize, i, nchan;
 	struct keywest_iface* iface;
-	u32 *psteps, *prate;
+	u32 *psteps, *prate, *addrp;
 	int rc;
 
-	if (np->n_intrs < 1 || np->n_addrs < 1) {
-		printk(KERN_ERR "%s: Missing interrupt or address !\n",
+	if (np->n_intrs < 1) {
+		printk(KERN_ERR "%s: Missing interrupt !\n",
 		       np->full_name);
 		return -ENODEV;
 	}
+	addrp = (u32 *)get_property(np, "AAPL,address", NULL);
+	if (addrp == NULL) {
+		printk(KERN_ERR "%s: Can't find address !\n",
+		       np->full_name);
+		return -ENODEV;
+	}
+
 	if (pmac_low_i2c_lock(np))
 		return -ENODEV;
 

@@ -525,13 +532,10 @@
 	for (bsteps = 0; (steps & 0x01) == 0; bsteps++)
 		steps >>= 1;
 
-	if (np->parent->name[0] == 'u') {
+	if (np->parent->name[0] == 'u')
 		nchan = 2;
-		addroffset = 3;
-	} else {
-		addroffset = 0;
+	else
 		nchan = 1;
-	}
 
 	tsize = sizeof(struct keywest_iface) +
 		(sizeof(struct keywest_chan) + 4) * nchan;

@@ -550,8 +554,7 @@
 	iface->irq = np->intrs[0].line;
 	iface->channels = (struct keywest_chan *)
 		(((unsigned long)(iface + 1) + 3UL) & ~3UL);
-	iface->base = ioremap(np->addrs[0].address + addroffset,
-						np->addrs[0].size);
+	iface->base = ioremap(*addrp, 0x1000);
 	if (!iface->base) {
 		printk(KERN_ERR "i2c-keywest: can't map inteface !\n");
 		kfree(iface);

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Index: linux-serialfix/arch/ppc/kernel/setup.c
===================================================================
@@ -744,6 +744,9 @@
 	/* so udelay does something sensible, assume <= 1000 bogomips */
 	loops_per_jiffy = 500000000 / HZ;
 
+	if (ppc_md.init_early)
+		ppc_md.init_early();
+
 #ifdef CONFIG_PPC_MULTIPLATFORM
 	/* This could be called "early setup arch", it must be done
 	 * now because xmon need it

Index: linux-serialfix/include/asm-ppc/btext.h
===================================================================
@@ -17,7 +17,7 @@
 extern boot_infos_t disp_bi;
 extern int boot_text_mapped;
 
-extern void init_boot_display(void);
+extern void btext_init(boot_infos_t *bi);
 extern void btext_welcome(void);
 extern void btext_prepare_BAT(void);
 extern void btext_setup_display(int width, int height, int depth, int pitch,

Index: linux-serialfix/include/asm-ppc/machdep.h
===================================================================
@@ -35,8 +35,10 @@
 	int		(*get_irq)(struct pt_regs *);
 	
 	/* A general init function, called by ppc_init in init/main.c.
-	   May be NULL. */
+	   May be NULL. DEPRECATED ! */
 	void		(*init)(void);
+	/* For compatibility with merged platforms */
+	void		(*init_early)(void);
 
 	void		(*restart)(char *cmd);
 	void		(*power_off)(void);