Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6

18 files changed, 457 insertions, 365 deletions

diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index f4b3bfcc109d..ae60eb1193c6 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -31,7 +31,7 @@ obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o i8259.o prom_init.o prom.o
 
 obj-$(CONFIG_PPC_PSERIES) += pSeries_pci.o pSeries_lpar.o pSeries_hvCall.o \
 			     pSeries_nvram.o rtasd.o ras.o pSeries_reconfig.o \
-			     pSeries_setup.o pSeries_iommu.o
+			     pSeries_setup.o pSeries_iommu.o udbg_16550.o
 
 obj-$(CONFIG_PPC_BPA) += bpa_setup.o bpa_iommu.o bpa_nvram.o \
 			 bpa_iic.o spider-pic.o
@@ -58,9 +58,11 @@ obj-$(CONFIG_XICS)		+= xics.o
 obj-$(CONFIG_MPIC)		+= mpic.o
 
 obj-$(CONFIG_PPC_PMAC)		+= pmac_setup.o pmac_feature.o pmac_pci.o \
-				   pmac_time.o pmac_nvram.o pmac_low_i2c.o
+				   pmac_time.o pmac_nvram.o pmac_low_i2c.o \
+				   udbg_scc.o
 
-obj-$(CONFIG_PPC_MAPLE)		+= maple_setup.o maple_pci.o maple_time.o
+obj-$(CONFIG_PPC_MAPLE)		+= maple_setup.o maple_pci.o maple_time.o \
+				   udbg_16550.o
 
 obj-$(CONFIG_U3_DART)		+= u3_iommu.o
 
diff --git a/arch/ppc64/kernel/btext.c b/arch/ppc64/kernel/btext.c
index c53f079e9b77..b6fbfbe9032d 100644
--- a/arch/ppc64/kernel/btext.c
+++ b/arch/ppc64/kernel/btext.c
@@ -7,7 +7,6 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
-#include <linux/version.h>
 
 #include <asm/sections.h>
 #include <asm/prom.h>
diff --git a/arch/ppc64/kernel/cputable.c b/arch/ppc64/kernel/cputable.c
index 4847f2ac8c9f..8831a28c3c4e 100644
--- a/arch/ppc64/kernel/cputable.c
+++ b/arch/ppc64/kernel/cputable.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 
+#include <asm/oprofile_impl.h>
 #include <asm/cputable.h>
 
 struct cpu_spec* cur_cpu_spec = NULL;
@@ -54,24 +55,32 @@ struct cpu_spec	cpu_specs[] = {
 		.pvr_value		= 0x00400000,
 		.cpu_name		= "POWER3 (630)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
-			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8,
+			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR,
 		.cpu_user_features = COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power3",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* Power3+ */
 		.pvr_mask		= 0xffff0000,
 		.pvr_value		= 0x00410000,
 		.cpu_name		= "POWER3 (630+)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
-			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8,
+			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power3",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* Northstar */
 		.pvr_mask		= 0xffff0000,
@@ -79,11 +88,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "RS64-II (northstar)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8 | CPU_FTR_MMCRA | CPU_FTR_CTRL,
+			CPU_FTR_MMCRA | CPU_FTR_CTRL,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/rs64",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* Pulsar */
 		.pvr_mask		= 0xffff0000,
@@ -91,11 +105,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "RS64-III (pulsar)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8 | CPU_FTR_MMCRA | CPU_FTR_CTRL,
+			CPU_FTR_MMCRA | CPU_FTR_CTRL,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/rs64",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* I-star */
 		.pvr_mask		= 0xffff0000,
@@ -103,11 +122,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "RS64-III (icestar)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8 | CPU_FTR_MMCRA | CPU_FTR_CTRL,
+			CPU_FTR_MMCRA | CPU_FTR_CTRL,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/rs64",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* S-star */
 		.pvr_mask		= 0xffff0000,
@@ -115,11 +139,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "RS64-IV (sstar)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_IABR |
-			CPU_FTR_PMC8 | CPU_FTR_MMCRA | CPU_FTR_CTRL,
+			CPU_FTR_MMCRA | CPU_FTR_CTRL,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power3,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/rs64",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* Power4 */
 		.pvr_mask		= 0xffff0000,
@@ -127,11 +156,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "POWER4 (gp)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
-			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_PMC8 | CPU_FTR_MMCRA,
+			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_MMCRA,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power4,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power4",
+		.oprofile_model		= &op_model_rs64,
+#endif
 	},
 	{	/* Power4+ */
 		.pvr_mask		= 0xffff0000,
@@ -139,11 +173,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_name		= "POWER4+ (gq)",
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
-			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_PMC8 | CPU_FTR_MMCRA,
+			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_MMCRA,
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_power4,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power4",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* PPC970 */
 		.pvr_mask		= 0xffff0000,
@@ -152,12 +191,17 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
 			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP |
-			CPU_FTR_CAN_NAP | CPU_FTR_PMC8 | CPU_FTR_MMCRA,
+			CPU_FTR_CAN_NAP | CPU_FTR_MMCRA,
 		.cpu_user_features	= COMMON_USER_PPC64 |
 			PPC_FEATURE_HAS_ALTIVEC_COMP,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_ppc970,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/970",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* PPC970FX */
 		.pvr_mask		= 0xffff0000,
@@ -166,12 +210,17 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
 			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP |
-			CPU_FTR_CAN_NAP | CPU_FTR_PMC8 | CPU_FTR_MMCRA,
+			CPU_FTR_CAN_NAP | CPU_FTR_MMCRA,
 		.cpu_user_features	= COMMON_USER_PPC64 |
 			PPC_FEATURE_HAS_ALTIVEC_COMP,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
 		.cpu_setup		= __setup_cpu_ppc970,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/970",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* PPC970MP */
 		.pvr_mask		= 0xffff0000,
@@ -180,12 +229,16 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
 			CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
 			CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP |
-			CPU_FTR_CAN_NAP | CPU_FTR_PMC8 | CPU_FTR_MMCRA,
+			CPU_FTR_CAN_NAP | CPU_FTR_MMCRA,
 		.cpu_user_features	= COMMON_USER_PPC64 |
 			PPC_FEATURE_HAS_ALTIVEC_COMP,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
 		.cpu_setup		= __setup_cpu_ppc970,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/970",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* Power5 */
 		.pvr_mask		= 0xffff0000,
@@ -199,7 +252,12 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 6,
 		.cpu_setup		= __setup_cpu_power4,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power5",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* Power5 */
 		.pvr_mask		= 0xffff0000,
@@ -213,7 +271,12 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 6,
 		.cpu_setup		= __setup_cpu_power4,
+#ifdef CONFIG_OPROFILE
+		.oprofile_cpu_type	= "ppc64/power5",
+		.oprofile_model		= &op_model_power4,
+#endif
 	},
 	{	/* BE DD1.x */
 		.pvr_mask		= 0xffff0000,
@@ -239,6 +302,7 @@ struct cpu_spec	cpu_specs[] = {
 		.cpu_user_features	= COMMON_USER_PPC64,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.num_pmcs		= 6,
 		.cpu_setup		= __setup_cpu_power4,
 	}
 };
diff --git a/arch/ppc64/kernel/entry.S b/arch/ppc64/kernel/entry.S
index b61572eb2a71..bf99b4a92f20 100644
--- a/arch/ppc64/kernel/entry.S
+++ b/arch/ppc64/kernel/entry.S
@@ -400,15 +400,14 @@ BEGIN_FTR_SECTION
 	cmpd	cr1,r6,r9	/* or is new ESID the same as current ESID? */
 	cror	eq,4*cr1+eq,eq
 	beq	2f		/* if yes, don't slbie it */
-	oris	r0,r6,0x0800	/* set C (class) bit */
 
 	/* Bolt in the new stack SLB entry */
 	ld	r7,KSP_VSID(r4)	/* Get new stack's VSID */
-	oris	r6,r6,(SLB_ESID_V)@h
-	ori	r6,r6,(SLB_NUM_BOLTED-1)@l
-	slbie	r0
-	slbie	r0		/* Workaround POWER5 < DD2.1 issue */
-	slbmte	r7,r6
+	oris	r0,r6,(SLB_ESID_V)@h
+	ori	r0,r0,(SLB_NUM_BOLTED-1)@l
+	slbie	r6
+	slbie	r6		/* Workaround POWER5 < DD2.1 issue */
+	slbmte	r7,r0
 	isync
 
 2:
diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index 036959775623..b436206e317d 100644
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -1646,8 +1646,9 @@ _GLOBAL(__secondary_start)
 #else
 	/* set the ASR */
 	ld	r3,systemcfg@got(r2)	/* r3 = ptr to systemcfg	 */
+	ld	r3,0(r3)
 	lwz	r3,PLATFORM(r3)		/* r3 = platform flags		 */
-	cmpldi 	r3,PLATFORM_PSERIES_LPAR
+	andi.	r3,r3,PLATFORM_LPAR	/* Test if bit 0 is set (LPAR bit) */
 	bne	98f
 	mfspr	r3,PVR
 	srwi	r3,r3,16
@@ -1809,8 +1810,9 @@ _STATIC(start_here_multiplatform)
 	ld	r3,PACASTABREAL(r13)
 	ori	r4,r3,1			/* turn on valid bit		 */
 	ld	r3,systemcfg@got(r2)	/* r3 = ptr to systemcfg */
+	ld	r3,0(r3)
 	lwz	r3,PLATFORM(r3)		/* r3 = platform flags */
-	cmpldi 	r3,PLATFORM_PSERIES_LPAR
+	andi.	r3,r3,PLATFORM_LPAR	/* Test if bit 0 is set (LPAR bit) */
 	bne	98f
 	mfspr	r3,PVR
 	srwi	r3,r3,16
@@ -1828,9 +1830,10 @@ _STATIC(start_here_multiplatform)
 99:
 	/* Set SDR1 (hash table pointer) */
 	ld	r3,systemcfg@got(r2)	/* r3 = ptr to systemcfg */
+	ld	r3,0(r3)
 	lwz	r3,PLATFORM(r3)		/* r3 = platform flags */
 	/* Test if bit 0 is set (LPAR bit) */
-	andi.	r3,r3,0x1
+	andi.	r3,r3,PLATFORM_LPAR
 	bne	98f
 	LOADADDR(r6,_SDR1)		/* Only if NOT LPAR */
 	sub	r6,r6,r26
diff --git a/arch/ppc64/kernel/lparcfg.c b/arch/ppc64/kernel/lparcfg.c
index edad361a8db0..cae19bbd5acd 100644
--- a/arch/ppc64/kernel/lparcfg.c
+++ b/arch/ppc64/kernel/lparcfg.c
@@ -569,7 +569,7 @@ struct file_operations lparcfg_fops = {
 int __init lparcfg_init(void)
 {
 	struct proc_dir_entry *ent;
-	mode_t mode = S_IRUSR;
+	mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
 
 	/* Allow writing if we have FW_FEATURE_SPLPAR */
 	if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
diff --git a/arch/ppc64/kernel/maple_setup.c b/arch/ppc64/kernel/maple_setup.c
index bb55b5a56910..fc0567498a3a 100644
--- a/arch/ppc64/kernel/maple_setup.c
+++ b/arch/ppc64/kernel/maple_setup.c
@@ -207,9 +207,6 @@ static void __init maple_init_early(void)
 		comport = (void *)ioremap(physport, 16);
 		udbg_init_uart(comport, default_speed);
 
-		ppc_md.udbg_putc = udbg_putc;
-		ppc_md.udbg_getc = udbg_getc;
-		ppc_md.udbg_getc_poll = udbg_getc_poll;
 		DBG("Hello World !\n");
 	}
 
diff --git a/arch/ppc64/kernel/pSeries_lpar.c b/arch/ppc64/kernel/pSeries_lpar.c
index a1d5fdfea4a8..a6de83f2078f 100644
--- a/arch/ppc64/kernel/pSeries_lpar.c
+++ b/arch/ppc64/kernel/pSeries_lpar.c
@@ -192,9 +192,9 @@ static unsigned char udbg_getcLP(void)
 void udbg_init_debug_lpar(void)
 {
 	vtermno = 0;
-	ppc_md.udbg_putc = udbg_putcLP;
-	ppc_md.udbg_getc = udbg_getcLP;
-	ppc_md.udbg_getc_poll = udbg_getc_pollLP;
+	udbg_putc = udbg_putcLP;
+	udbg_getc = udbg_getcLP;
+	udbg_getc_poll = udbg_getc_pollLP;
 }
 
 /* returns 0 if couldn't find or use /chosen/stdout as console */
@@ -227,18 +227,18 @@ int find_udbg_vterm(void)
 			termno = (u32 *)get_property(stdout_node, "reg", NULL);
 			if (termno) {
 				vtermno = termno[0];
-				ppc_md.udbg_putc = udbg_putcLP;
-				ppc_md.udbg_getc = udbg_getcLP;
-				ppc_md.udbg_getc_poll = udbg_getc_pollLP;
+				udbg_putc = udbg_putcLP;
+				udbg_getc = udbg_getcLP;
+				udbg_getc_poll = udbg_getc_pollLP;
 				found = 1;
 			}
 		} else if (device_is_compatible(stdout_node, "hvterm-protocol")) {
 			termno = (u32 *)get_property(stdout_node, "reg", NULL);
 			if (termno) {
 				vtermno = termno[0];
-				ppc_md.udbg_putc = udbg_hvsi_putc;
-				ppc_md.udbg_getc = udbg_hvsi_getc;
-				ppc_md.udbg_getc_poll = udbg_hvsi_getc_poll;
+				udbg_putc = udbg_hvsi_putc;
+				udbg_getc = udbg_hvsi_getc;
+				udbg_getc_poll = udbg_hvsi_getc_poll;
 				found = 1;
 			}
 		}
diff --git a/arch/ppc64/kernel/pSeries_setup.c b/arch/ppc64/kernel/pSeries_setup.c
index f0f0630cf07c..9490b6c5b173 100644
--- a/arch/ppc64/kernel/pSeries_setup.c
+++ b/arch/ppc64/kernel/pSeries_setup.c
@@ -37,7 +37,7 @@
 #include <linux/ioport.h>
 #include <linux/console.h>
 #include <linux/pci.h>
-#include <linux/version.h>
+#include <linux/utsname.h>
 #include <linux/adb.h>
 #include <linux/module.h>
 #include <linux/delay.h>
@@ -272,7 +272,7 @@ static int __init pSeries_init_panel(void)
 {
 	/* Manually leave the kernel version on the panel. */
 	ppc_md.progress("Linux ppc64\n", 0);
-	ppc_md.progress(UTS_RELEASE, 0);
+	ppc_md.progress(system_utsname.version, 0);
 
 	return 0;
 }
@@ -397,9 +397,6 @@ static void __init pSeries_init_early(void)
 		comport = (void *)ioremap(physport, 16);
 		udbg_init_uart(comport, default_speed);
 
-		ppc_md.udbg_putc = udbg_putc;
-		ppc_md.udbg_getc = udbg_getc;
-		ppc_md.udbg_getc_poll = udbg_getc_poll;
 		DBG("Hello World !\n");
 	}
 
diff --git a/arch/ppc64/kernel/pmac_setup.c b/arch/ppc64/kernel/pmac_setup.c
index 8ff86a766cdf..e7f695dcd8c8 100644
--- a/arch/ppc64/kernel/pmac_setup.c
+++ b/arch/ppc64/kernel/pmac_setup.c
@@ -274,16 +274,6 @@ static void __pmac pmac_halt(void)
 }
 
 #ifdef CONFIG_BOOTX_TEXT
-static int dummy_getc_poll(void)
-{
-	return -1;
-}
-
-static unsigned char dummy_getc(void)
-{
-	return 0;
-}
-
 static void btext_putc(unsigned char c)
 {
 	btext_drawchar(c);
@@ -342,16 +332,13 @@ static void __init pmac_init_early(void)
 		sccdbg = 1;
        		udbg_init_scc(NULL);
        	}
-
-	else {
 #ifdef CONFIG_BOOTX_TEXT
+	else {
 		init_boot_display();
 
-		ppc_md.udbg_putc = btext_putc;
-		ppc_md.udbg_getc = dummy_getc;
-		ppc_md.udbg_getc_poll = dummy_getc_poll;
-#endif /* CONFIG_BOOTX_TEXT */
+		udbg_putc = btext_putc;
 	}
+#endif /* CONFIG_BOOTX_TEXT */
 
 	/* Setup interrupt mapping options */
 	ppc64_interrupt_controller = IC_OPEN_PIC;
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index b21848826791..6ad5a8467f87 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -22,7 +22,6 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
-#include <linux/version.h>
 #include <linux/threads.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c
index 122283a1d39a..9979919cdf92 100644
--- a/arch/ppc64/kernel/prom_init.c
+++ b/arch/ppc64/kernel/prom_init.c
@@ -22,7 +22,6 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
-#include <linux/version.h>
 #include <linux/threads.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
diff --git a/arch/ppc64/kernel/setup.c b/arch/ppc64/kernel/setup.c
index ee3b20de2e7a..d0bb68af0ea4 100644
--- a/arch/ppc64/kernel/setup.c
+++ b/arch/ppc64/kernel/setup.c
@@ -25,7 +25,7 @@
 #include <linux/seq_file.h>
 #include <linux/ioport.h>
 #include <linux/console.h>
-#include <linux/version.h>
+#include <linux/utsname.h>
 #include <linux/tty.h>
 #include <linux/root_dev.h>
 #include <linux/notifier.h>
@@ -89,7 +89,7 @@ extern void udbg_init_maple_realmode(void);
 #define EARLY_DEBUG_INIT() udbg_init_maple_realmode()
 #define EARLY_DEBUG_INIT() udbg_init_pmac_realmode()
 #define EARLY_DEBUG_INIT()						\
-	do { ppc_md.udbg_putc = call_rtas_display_status_delay; } while(0)
+	do { udbg_putc = call_rtas_display_status_delay; } while(0)
 #endif
 
 /* extern void *stab; */
@@ -108,7 +108,6 @@ int boot_cpuid = 0;
 int boot_cpuid_phys = 0;
 dev_t boot_dev;
 u64 ppc64_pft_size;
-u64 ppc64_debug_switch;
 
 struct ppc64_caches ppc64_caches;
 EXPORT_SYMBOL_GPL(ppc64_caches);
@@ -154,34 +153,6 @@ struct screen_info screen_info = {
 	.orig_video_points = 16
 };
 
-/*
- * Initialize the PPCDBG state.  Called before relocation has been enabled.
- */
-void __init ppcdbg_initialize(void)
-{
-	ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */
-	/* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */;
-}
-
-/*
- * Early boot console based on udbg
- */
-static struct console udbg_console = {
-	.name	= "udbg",
-	.write	= udbg_console_write,
-	.flags	= CON_PRINTBUFFER,
-	.index	= -1,
-};
-static int early_console_initialized;
-
-void __init disable_early_printk(void)
-{
-	if (!early_console_initialized)
-		return;
-	unregister_console(&udbg_console);
-	early_console_initialized = 0;
-}
-
 #if defined(CONFIG_PPC_MULTIPLATFORM) && defined(CONFIG_SMP)
 
 static int smt_enabled_cmdline;
@@ -425,12 +396,6 @@ void __init early_setup(unsigned long dt_ptr)
 	}
 	ppc_md = **mach;
 
-	/* our udbg callbacks got overriden by the above, let's put them
-	 * back in. Ultimately, I want those things to be split from the
-	 * main ppc_md
-	 */
-	EARLY_DEBUG_INIT();
-
 	DBG("Found, Initializing memory management...\n");
 
 	/*
@@ -636,8 +601,7 @@ void __init setup_system(void)
 	/*
 	 * Register early console
 	 */
-	early_console_initialized = 1;
-	register_console(&udbg_console);
+	register_early_udbg_console();
 
 	/* Save unparsed command line copy for /proc/cmdline */
 	strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
@@ -657,7 +621,7 @@ void __init setup_system(void)
 	smp_release_cpus();
 #endif /* defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES) */
 
-	printk("Starting Linux PPC64 %s\n", UTS_RELEASE);
+	printk("Starting Linux PPC64 %s\n", system_utsname.version);
 
 	printk("-----------------------------------------------------\n");
 	printk("ppc64_pft_size                = 0x%lx\n", ppc64_pft_size);
diff --git a/arch/ppc64/kernel/sysfs.c b/arch/ppc64/kernel/sysfs.c
index f311ee7c0070..6654b350979c 100644
--- a/arch/ppc64/kernel/sysfs.c
+++ b/arch/ppc64/kernel/sysfs.c
@@ -215,18 +215,23 @@ static void register_cpu_online(unsigned int cpu)
 	if (cpu_has_feature(CPU_FTR_MMCRA))
 		sysdev_create_file(s, &attr_mmcra);
 
-	sysdev_create_file(s, &attr_pmc1);
-	sysdev_create_file(s, &attr_pmc2);
-	sysdev_create_file(s, &attr_pmc3);
-	sysdev_create_file(s, &attr_pmc4);
-	sysdev_create_file(s, &attr_pmc5);
-	sysdev_create_file(s, &attr_pmc6);
-
-	if (cpu_has_feature(CPU_FTR_PMC8)) {
+	if (cur_cpu_spec->num_pmcs >= 1)
+		sysdev_create_file(s, &attr_pmc1);
+	if (cur_cpu_spec->num_pmcs >= 2)
+		sysdev_create_file(s, &attr_pmc2);
+	if (cur_cpu_spec->num_pmcs >= 3)
+		sysdev_create_file(s, &attr_pmc3);
+	if (cur_cpu_spec->num_pmcs >= 4)
+		sysdev_create_file(s, &attr_pmc4);
+	if (cur_cpu_spec->num_pmcs >= 5)
+		sysdev_create_file(s, &attr_pmc5);
+	if (cur_cpu_spec->num_pmcs >= 6)
+		sysdev_create_file(s, &attr_pmc6);
+	if (cur_cpu_spec->num_pmcs >= 7)
 		sysdev_create_file(s, &attr_pmc7);
+	if (cur_cpu_spec->num_pmcs >= 8)
 		sysdev_create_file(s, &attr_pmc8);
-	}
-
+  
 	if (cpu_has_feature(CPU_FTR_SMT))
 		sysdev_create_file(s, &attr_purr);
 }
@@ -252,17 +257,22 @@ static void unregister_cpu_online(unsigned int cpu)
 	if (cpu_has_feature(CPU_FTR_MMCRA))
 		sysdev_remove_file(s, &attr_mmcra);
 
-	sysdev_remove_file(s, &attr_pmc1);
-	sysdev_remove_file(s, &attr_pmc2);
-	sysdev_remove_file(s, &attr_pmc3);
-	sysdev_remove_file(s, &attr_pmc4);
-	sysdev_remove_file(s, &attr_pmc5);
-	sysdev_remove_file(s, &attr_pmc6);
-
-	if (cpu_has_feature(CPU_FTR_PMC8)) {
+	if (cur_cpu_spec->num_pmcs >= 1)
+		sysdev_remove_file(s, &attr_pmc1);
+	if (cur_cpu_spec->num_pmcs >= 2)
+		sysdev_remove_file(s, &attr_pmc2);
+	if (cur_cpu_spec->num_pmcs >= 3)
+		sysdev_remove_file(s, &attr_pmc3);
+	if (cur_cpu_spec->num_pmcs >= 4)
+		sysdev_remove_file(s, &attr_pmc4);
+	if (cur_cpu_spec->num_pmcs >= 5)
+		sysdev_remove_file(s, &attr_pmc5);
+	if (cur_cpu_spec->num_pmcs >= 6)
+		sysdev_remove_file(s, &attr_pmc6);
+	if (cur_cpu_spec->num_pmcs >= 7)
 		sysdev_remove_file(s, &attr_pmc7);
+	if (cur_cpu_spec->num_pmcs >= 8)
 		sysdev_remove_file(s, &attr_pmc8);
-	}
 
 	if (cpu_has_feature(CPU_FTR_SMT))
 		sysdev_remove_file(s, &attr_purr);
diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c
index 1696e1b05bb9..91ef95ccda4f 100644
--- a/arch/ppc64/kernel/time.c
+++ b/arch/ppc64/kernel/time.c
@@ -51,7 +51,6 @@
 #include <linux/cpu.h>
 #include <linux/security.h>
 
-#include <asm/segment.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/nvram.h>
diff --git a/arch/ppc64/kernel/udbg.c b/arch/ppc64/kernel/udbg.c
index c0da45540f0f..ed6766e21f5a 100644
--- a/arch/ppc64/kernel/udbg.c
+++ b/arch/ppc64/kernel/udbg.c
@@ -1,5 +1,5 @@
 /*
- * NS16550 Serial Port (uart) debugging stuff.
+ * polling mode stateless debugging stuff, originally for NS16550 Serial Ports
  *
  * c 2001 PPC 64 Team, IBM Corp
  *
@@ -13,249 +13,24 @@
 #define WANT_PPCDBG_TAB /* Only defined here */
 #include <linux/config.h>
 #include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/console.h>
 #include <asm/ppcdebug.h>
 #include <asm/processor.h>
-#include <asm/uaccess.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/pmac_feature.h>
 
-extern u8 real_readb(volatile u8 __iomem  *addr);
-extern void real_writeb(u8 data, volatile u8 __iomem *addr);
-
-struct NS16550 {
-	/* this struct must be packed */
-	unsigned char rbr;  /* 0 */
-	unsigned char ier;  /* 1 */
-	unsigned char fcr;  /* 2 */
-	unsigned char lcr;  /* 3 */
-	unsigned char mcr;  /* 4 */
-	unsigned char lsr;  /* 5 */
-	unsigned char msr;  /* 6 */
-	unsigned char scr;  /* 7 */
-};
-
-#define thr rbr
-#define iir fcr
-#define dll rbr
-#define dlm ier
-#define dlab lcr
-
-#define LSR_DR   0x01  /* Data ready */
-#define LSR_OE   0x02  /* Overrun */
-#define LSR_PE   0x04  /* Parity error */
-#define LSR_FE   0x08  /* Framing error */
-#define LSR_BI   0x10  /* Break */
-#define LSR_THRE 0x20  /* Xmit holding register empty */
-#define LSR_TEMT 0x40  /* Xmitter empty */
-#define LSR_ERR  0x80  /* Error */
-
-static volatile struct NS16550 __iomem *udbg_comport;
-
-void udbg_init_uart(void __iomem *comport, unsigned int speed)
-{
-	u16 dll = speed ? (115200 / speed) : 12;
-
-	if (comport) {
-		udbg_comport = (struct NS16550 __iomem *)comport;
-		out_8(&udbg_comport->lcr, 0x00);
-		out_8(&udbg_comport->ier, 0xff);
-		out_8(&udbg_comport->ier, 0x00);
-		out_8(&udbg_comport->lcr, 0x80);	/* Access baud rate */
-		out_8(&udbg_comport->dll, dll & 0xff);	/* 1 = 115200,  2 = 57600,
-							   3 = 38400, 12 = 9600 baud */
-		out_8(&udbg_comport->dlm, dll >> 8);	/* dll >> 8 which should be zero
-							   for fast rates; */
-		out_8(&udbg_comport->lcr, 0x03);	/* 8 data, 1 stop, no parity */
-		out_8(&udbg_comport->mcr, 0x03);	/* RTS/DTR */
-		out_8(&udbg_comport->fcr ,0x07);	/* Clear & enable FIFOs */
-	}
-}
-
-#ifdef CONFIG_PPC_PMAC
-
-#define	SCC_TXRDY	4
-#define SCC_RXRDY	1
-
-static volatile u8 __iomem *sccc;
-static volatile u8 __iomem *sccd;
-
-static unsigned char scc_inittab[] = {
-    13, 0,		/* set baud rate divisor */
-    12, 0,
-    14, 1,		/* baud rate gen enable, src=rtxc */
-    11, 0x50,		/* clocks = br gen */
-    5,  0xea,		/* tx 8 bits, assert DTR & RTS */
-    4,  0x46,		/* x16 clock, 1 stop */
-    3,  0xc1,		/* rx enable, 8 bits */
-};
-
-void udbg_init_scc(struct device_node *np)
-{
-	u32 *reg;
-	unsigned long addr;
-	int i, x;
-
-	if (np == NULL)
-		np = of_find_node_by_name(NULL, "escc");
-	if (np == NULL || np->parent == NULL)
-		return;
-
-	udbg_printf("found SCC...\n");
-	/* Get address within mac-io ASIC */ 
-	reg = (u32 *)get_property(np, "reg", NULL);
-	if (reg == NULL)
-		return;
-	addr = reg[0];
-	udbg_printf("local addr: %lx\n", addr);
-	/* Get address of mac-io PCI itself */
-	reg = (u32 *)get_property(np->parent, "assigned-addresses", NULL);
-	if (reg == NULL)
-		return;
-	addr += reg[2];
-	udbg_printf("final addr: %lx\n", addr);
-
-	/* Setup for 57600 8N1 */
-	addr += 0x20;
-	sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
-	sccc += addr & ~PAGE_MASK;
-	sccd = sccc + 0x10;
-
-	udbg_printf("ioremap result sccc: %p\n", sccc);
-	mb();
-
-	for (i = 20000; i != 0; --i)
-		x = in_8(sccc);
-	out_8(sccc, 0x09);		/* reset A or B side */
-	out_8(sccc, 0xc0);
-	for (i = 0; i < sizeof(scc_inittab); ++i)
-		out_8(sccc, scc_inittab[i]);
-
-	ppc_md.udbg_putc = udbg_putc;
-	ppc_md.udbg_getc = udbg_getc;
-	ppc_md.udbg_getc_poll = udbg_getc_poll;
-
-	udbg_puts("Hello World !\n");
-}
-
-#endif /* CONFIG_PPC_PMAC */
-
-#ifdef CONFIG_PPC_PMAC
-static void udbg_real_putc(unsigned char c)
-{
-	while ((real_readb(sccc) & SCC_TXRDY) == 0)
-		;
-	real_writeb(c, sccd);
-	if (c == '\n')
-		udbg_real_putc('\r');
-}
-
-void udbg_init_pmac_realmode(void)
-{
-	sccc = (volatile u8 __iomem *)0x80013020ul;
-	sccd = (volatile u8 __iomem *)0x80013030ul;
-
-	ppc_md.udbg_putc = udbg_real_putc;
-	ppc_md.udbg_getc = NULL;
-	ppc_md.udbg_getc_poll = NULL;
-}
-#endif /* CONFIG_PPC_PMAC */
-
-#ifdef CONFIG_PPC_MAPLE
-void udbg_maple_real_putc(unsigned char c)
-{
-	if (udbg_comport) {
-		while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)
-			/* wait for idle */;
-		real_writeb(c, &udbg_comport->thr); eieio();
-		if (c == '\n') {
-			/* Also put a CR.  This is for convenience. */
-			while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)
-				/* wait for idle */;
-			real_writeb('\r', &udbg_comport->thr); eieio();
-		}
-	}
-}
-
-void udbg_init_maple_realmode(void)
-{
-	udbg_comport = (volatile struct NS16550 __iomem *)0xf40003f8;
-
-	ppc_md.udbg_putc = udbg_maple_real_putc;
-	ppc_md.udbg_getc = NULL;
-	ppc_md.udbg_getc_poll = NULL;
-}
-#endif /* CONFIG_PPC_MAPLE */
-
-void udbg_putc(unsigned char c)
-{
-	if (udbg_comport) {
-		while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
-			/* wait for idle */;
-		out_8(&udbg_comport->thr, c);
-		if (c == '\n') {
-			/* Also put a CR.  This is for convenience. */
-			while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
-				/* wait for idle */; 
-			out_8(&udbg_comport->thr, '\r');
-		}
-	}
-#ifdef CONFIG_PPC_PMAC
-	else if (sccc) {
-		while ((in_8(sccc) & SCC_TXRDY) == 0)
-			;
-		out_8(sccd,  c);		
-		if (c == '\n')
-			udbg_putc('\r');
-	}
-#endif /* CONFIG_PPC_PMAC */
-}
-
-int udbg_getc_poll(void)
-{
-	if (udbg_comport) {
-		if ((in_8(&udbg_comport->lsr) & LSR_DR) != 0)
-			return in_8(&udbg_comport->rbr);
-		else
-			return -1;
-	}
-#ifdef CONFIG_PPC_PMAC
-	else if (sccc) {
-		if ((in_8(sccc) & SCC_RXRDY) != 0)
-			return in_8(sccd);
-		else
-			return -1;
-	}
-#endif /* CONFIG_PPC_PMAC */
-	return -1;
-}
-
-unsigned char udbg_getc(void)
-{
-	if (udbg_comport) {
-		while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)
-			/* wait for char */;
-		return in_8(&udbg_comport->rbr);
-	}
-#ifdef CONFIG_PPC_PMAC
-	else if (sccc) {
-		while ((in_8(sccc) & SCC_RXRDY) == 0)
-			;
-		return in_8(sccd);
-	}
-#endif /* CONFIG_PPC_PMAC */
-	return 0;
-}
+void (*udbg_putc)(unsigned char c);
+unsigned char (*udbg_getc)(void);
+int (*udbg_getc_poll)(void);
 
+/* udbg library, used by xmon et al */
 void udbg_puts(const char *s)
 {
-	if (ppc_md.udbg_putc) {
+	if (udbg_putc) {
 		char c;
 
 		if (s && *s != '\0') {
 			while ((c = *s++) != '\0')
-				ppc_md.udbg_putc(c);
+				udbg_putc(c);
 		}
 	}
 #if 0
@@ -270,12 +45,12 @@ int udbg_write(const char *s, int n)
 	int remain = n;
 	char c;
 
-	if (!ppc_md.udbg_putc)
+	if (!udbg_putc)
 		return 0;
 
 	if (s && *s != '\0') {
 		while (((c = *s++) != '\0') && (remain-- > 0)) {
-			ppc_md.udbg_putc(c);
+			udbg_putc(c);
 		}
 	}
 
@@ -287,12 +62,12 @@ int udbg_read(char *buf, int buflen)
 	char c, *p = buf;
 	int i;
 
-	if (!ppc_md.udbg_getc)
+	if (!udbg_getc)
 		return 0;
 
 	for (i = 0; i < buflen; ++i) {
 		do {
-			c = ppc_md.udbg_getc();
+			c = udbg_getc();
 		} while (c == 0x11 || c == 0x13);
 		if (c == 0)
 			break;
@@ -302,11 +77,6 @@ int udbg_read(char *buf, int buflen)
 	return i;
 }
 
-void udbg_console_write(struct console *con, const char *s, unsigned int n)
-{
-	udbg_write(s, n);
-}
-
 #define UDBG_BUFSIZE 256
 void udbg_printf(const char *fmt, ...)
 {
@@ -319,6 +89,10 @@ void udbg_printf(const char *fmt, ...)
 	va_end(args);
 }
 
+/* PPCDBG stuff */
+
+u64 ppc64_debug_switch;
+
 /* Special print used by PPCDBG() macro */
 void udbg_ppcdbg(unsigned long debug_flags, const char *fmt, ...)
 {
@@ -358,3 +132,43 @@ unsigned long udbg_ifdebug(unsigned long flags)
 {
 	return (flags & ppc64_debug_switch);
 }
+
+/*
+ * Initialize the PPCDBG state.  Called before relocation has been enabled.
+ */
+void __init ppcdbg_initialize(void)
+{
+	ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */
+	/* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */;
+}
+
+/*
+ * Early boot console based on udbg
+ */
+static void udbg_console_write(struct console *con, const char *s,
+		unsigned int n)
+{
+	udbg_write(s, n);
+}
+
+static struct console udbg_console = {
+	.name	= "udbg",
+	.write	= udbg_console_write,
+	.flags	= CON_PRINTBUFFER,
+	.index	= -1,
+};
+
+void __init disable_early_printk(void)
+{
+	unregister_console(&udbg_console);
+}
+
+/* called by setup_system */
+void register_early_udbg_console(void)
+{
+	register_console(&udbg_console);
+}
+
+#if 0   /* if you want to use this as a regular output console */
+console_initcall(register_udbg_console);
+#endif
diff --git a/arch/ppc64/kernel/udbg_16550.c b/arch/ppc64/kernel/udbg_16550.c
new file mode 100644
index 000000000000..9313574ab935
--- /dev/null
+++ b/arch/ppc64/kernel/udbg_16550.c
@@ -0,0 +1,123 @@
+/*
+ * udbg for for NS16550 compatable serial ports
+ *
+ * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
+ *
+ *      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 <linux/config.h>
+#include <linux/types.h>
+#include <asm/udbg.h>
+#include <asm/io.h>
+
+extern u8 real_readb(volatile u8 __iomem  *addr);
+extern void real_writeb(u8 data, volatile u8 __iomem *addr);
+
+struct NS16550 {
+	/* this struct must be packed */
+	unsigned char rbr;  /* 0 */
+	unsigned char ier;  /* 1 */
+	unsigned char fcr;  /* 2 */
+	unsigned char lcr;  /* 3 */
+	unsigned char mcr;  /* 4 */
+	unsigned char lsr;  /* 5 */
+	unsigned char msr;  /* 6 */
+	unsigned char scr;  /* 7 */
+};
+
+#define thr rbr
+#define iir fcr
+#define dll rbr
+#define dlm ier
+#define dlab lcr
+
+#define LSR_DR   0x01  /* Data ready */
+#define LSR_OE   0x02  /* Overrun */
+#define LSR_PE   0x04  /* Parity error */
+#define LSR_FE   0x08  /* Framing error */
+#define LSR_BI   0x10  /* Break */
+#define LSR_THRE 0x20  /* Xmit holding register empty */
+#define LSR_TEMT 0x40  /* Xmitter empty */
+#define LSR_ERR  0x80  /* Error */
+
+static volatile struct NS16550 __iomem *udbg_comport;
+
+static void udbg_550_putc(unsigned char c)
+{
+	if (udbg_comport) {
+		while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
+			/* wait for idle */;
+		out_8(&udbg_comport->thr, c);
+		if (c == '\n')
+			udbg_550_putc('\r');
+	}
+}
+
+static int udbg_550_getc_poll(void)
+{
+	if (udbg_comport) {
+		if ((in_8(&udbg_comport->lsr) & LSR_DR) != 0)
+			return in_8(&udbg_comport->rbr);
+		else
+			return -1;
+	}
+	return -1;
+}
+
+static unsigned char udbg_550_getc(void)
+{
+	if (udbg_comport) {
+		while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)
+			/* wait for char */;
+		return in_8(&udbg_comport->rbr);
+	}
+	return 0;
+}
+
+void udbg_init_uart(void __iomem *comport, unsigned int speed)
+{
+	u16 dll = speed ? (115200 / speed) : 12;
+
+	if (comport) {
+		udbg_comport = (struct NS16550 __iomem *)comport;
+		out_8(&udbg_comport->lcr, 0x00);
+		out_8(&udbg_comport->ier, 0xff);
+		out_8(&udbg_comport->ier, 0x00);
+		out_8(&udbg_comport->lcr, 0x80);	/* Access baud rate */
+		out_8(&udbg_comport->dll, dll & 0xff);	/* 1 = 115200,  2 = 57600,
+							   3 = 38400, 12 = 9600 baud */
+		out_8(&udbg_comport->dlm, dll >> 8);	/* dll >> 8 which should be zero
+							   for fast rates; */
+		out_8(&udbg_comport->lcr, 0x03);	/* 8 data, 1 stop, no parity */
+		out_8(&udbg_comport->mcr, 0x03);	/* RTS/DTR */
+		out_8(&udbg_comport->fcr ,0x07);	/* Clear & enable FIFOs */
+		udbg_putc = udbg_550_putc;
+		udbg_getc = udbg_550_getc;
+		udbg_getc_poll = udbg_550_getc_poll;
+	}
+}
+
+#ifdef CONFIG_PPC_MAPLE
+void udbg_maple_real_putc(unsigned char c)
+{
+	if (udbg_comport) {
+		while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)
+			/* wait for idle */;
+		real_writeb(c, &udbg_comport->thr); eieio();
+		if (c == '\n')
+			udbg_maple_real_putc('\r');
+	}
+}
+
+void udbg_init_maple_realmode(void)
+{
+	udbg_comport = (volatile struct NS16550 __iomem *)0xf40003f8;
+
+	udbg_putc = udbg_maple_real_putc;
+	udbg_getc = NULL;
+	udbg_getc_poll = NULL;
+}
+#endif /* CONFIG_PPC_MAPLE */
diff --git a/arch/ppc64/kernel/udbg_scc.c b/arch/ppc64/kernel/udbg_scc.c
new file mode 100644
index 000000000000..c47fd6c63531
--- /dev/null
+++ b/arch/ppc64/kernel/udbg_scc.c
@@ -0,0 +1,136 @@
+/*
+ * udbg for for zilog scc ports as found on Apple PowerMacs
+ *
+ * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
+ *
+ *      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 <linux/config.h>
+#include <linux/types.h>
+#include <asm/udbg.h>
+#include <asm/processor.h>
+#include <asm/naca.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/pmac_feature.h>
+
+extern u8 real_readb(volatile u8 __iomem  *addr);
+extern void real_writeb(u8 data, volatile u8 __iomem *addr);
+
+#define	SCC_TXRDY	4
+#define SCC_RXRDY	1
+
+static volatile u8 __iomem *sccc;
+static volatile u8 __iomem *sccd;
+
+static void udbg_scc_putc(unsigned char c)
+{
+	if (sccc) {
+		while ((in_8(sccc) & SCC_TXRDY) == 0)
+			;
+		out_8(sccd,  c);
+		if (c == '\n')
+			udbg_scc_putc('\r');
+	}
+}
+
+static int udbg_scc_getc_poll(void)
+{
+	if (sccc) {
+		if ((in_8(sccc) & SCC_RXRDY) != 0)
+			return in_8(sccd);
+		else
+			return -1;
+	}
+	return -1;
+}
+
+static unsigned char udbg_scc_getc(void)
+{
+	if (sccc) {
+		while ((in_8(sccc) & SCC_RXRDY) == 0)
+			;
+		return in_8(sccd);
+	}
+	return 0;
+}
+
+static unsigned char scc_inittab[] = {
+    13, 0,		/* set baud rate divisor */
+    12, 0,
+    14, 1,		/* baud rate gen enable, src=rtxc */
+    11, 0x50,		/* clocks = br gen */
+    5,  0xea,		/* tx 8 bits, assert DTR & RTS */
+    4,  0x46,		/* x16 clock, 1 stop */
+    3,  0xc1,		/* rx enable, 8 bits */
+};
+
+void udbg_init_scc(struct device_node *np)
+{
+	u32 *reg;
+	unsigned long addr;
+	int i, x;
+
+	if (np == NULL)
+		np = of_find_node_by_name(NULL, "escc");
+	if (np == NULL || np->parent == NULL)
+		return;
+
+	udbg_printf("found SCC...\n");
+	/* Get address within mac-io ASIC */
+	reg = (u32 *)get_property(np, "reg", NULL);
+	if (reg == NULL)
+		return;
+	addr = reg[0];
+	udbg_printf("local addr: %lx\n", addr);
+	/* Get address of mac-io PCI itself */
+	reg = (u32 *)get_property(np->parent, "assigned-addresses", NULL);
+	if (reg == NULL)
+		return;
+	addr += reg[2];
+	udbg_printf("final addr: %lx\n", addr);
+
+	/* Setup for 57600 8N1 */
+	addr += 0x20;
+	sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
+	sccc += addr & ~PAGE_MASK;
+	sccd = sccc + 0x10;
+
+	udbg_printf("ioremap result sccc: %p\n", sccc);
+	mb();
+
+	for (i = 20000; i != 0; --i)
+		x = in_8(sccc);
+	out_8(sccc, 0x09);		/* reset A or B side */
+	out_8(sccc, 0xc0);
+	for (i = 0; i < sizeof(scc_inittab); ++i)
+		out_8(sccc, scc_inittab[i]);
+
+	udbg_putc = udbg_scc_putc;
+	udbg_getc = udbg_scc_getc;
+	udbg_getc_poll = udbg_scc_getc_poll;
+
+	udbg_puts("Hello World !\n");
+}
+
+static void udbg_real_scc_putc(unsigned char c)
+{
+	while ((real_readb(sccc) & SCC_TXRDY) == 0)
+		;
+	real_writeb(c, sccd);
+	if (c == '\n')
+		udbg_real_scc_putc('\r');
+}
+
+void udbg_init_pmac_realmode(void)
+{
+	sccc = (volatile u8 __iomem *)0x80013020ul;
+	sccd = (volatile u8 __iomem *)0x80013030ul;
+
+	udbg_putc = udbg_real_scc_putc;
+	udbg_getc = NULL;
+	udbg_getc_poll = NULL;
+}