Merge ../linux-2.6

4 files changed, 260 insertions, 139 deletions

diff --git a/arch/ppc64/kernel/asm-offsets.c b/arch/ppc64/kernel/asm-offsets.c
index 504dee836d2..bce9065da6c 100644
--- a/arch/ppc64/kernel/asm-offsets.c
+++ b/arch/ppc64/kernel/asm-offsets.c
@@ -93,6 +93,9 @@ int main(void)
 	DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
 	DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
 	DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
+#ifdef CONFIG_PPC_64K_PAGES
+	DEFINE(PACAPGDIR, offsetof(struct paca_struct, pgdir));
+#endif
 #ifdef CONFIG_HUGETLB_PAGE
 	DEFINE(PACALOWHTLBAREAS, offsetof(struct paca_struct, context.low_htlb_areas));
 	DEFINE(PACAHIGHHTLBAREAS, offsetof(struct paca_struct, context.high_htlb_areas));
diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index db1cf397be2..9e8050ea122 100644
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -195,11 +195,11 @@ exception_marker:
 #define EX_R12		24
 #define EX_R13		32
 #define EX_SRR0		40
-#define EX_R3		40	/* SLB miss saves R3, but not SRR0 */
 #define EX_DAR		48
-#define EX_LR		48	/* SLB miss saves LR, but not DAR */
 #define EX_DSISR	56
 #define EX_CCR		60
+#define EX_R3		64
+#define EX_LR		72
 
 #define EXCEPTION_PROLOG_PSERIES(area, label)				\
 	mfspr	r13,SPRN_SPRG3;		/* get paca address into r13 */	\
@@ -419,17 +419,22 @@ data_access_slb_pSeries:
 	mtspr	SPRN_SPRG1,r13
 	RUNLATCH_ON(r13)
 	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
+	std	r3,PACA_EXSLB+EX_R3(r13)
+	mfspr	r3,SPRN_DAR
 	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
+	mfcr	r9
+#ifdef __DISABLED__
+	/* Keep that around for when we re-implement dynamic VSIDs */
+	cmpdi	r3,0
+	bge	slb_miss_user_pseries
+#endif /* __DISABLED__ */
 	std	r10,PACA_EXSLB+EX_R10(r13)
 	std	r11,PACA_EXSLB+EX_R11(r13)
 	std	r12,PACA_EXSLB+EX_R12(r13)
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	mfspr	r9,SPRN_SPRG1
-	std	r9,PACA_EXSLB+EX_R13(r13)
-	mfcr	r9
+	mfspr	r10,SPRN_SPRG1
+	std	r10,PACA_EXSLB+EX_R13(r13)
 	mfspr	r12,SPRN_SRR1		/* and SRR1 */
-	mfspr	r3,SPRN_DAR
-	b	.do_slb_miss		/* Rel. branch works in real mode */
+	b	.slb_miss_realmode	/* Rel. branch works in real mode */
 
 	STD_EXCEPTION_PSERIES(0x400, instruction_access)
 
@@ -440,17 +445,22 @@ instruction_access_slb_pSeries:
 	mtspr	SPRN_SPRG1,r13
 	RUNLATCH_ON(r13)
 	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
+	std	r3,PACA_EXSLB+EX_R3(r13)
+	mfspr	r3,SPRN_SRR0		/* SRR0 is faulting address */
 	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
+	mfcr	r9
+#ifdef __DISABLED__
+	/* Keep that around for when we re-implement dynamic VSIDs */
+	cmpdi	r3,0
+	bge	slb_miss_user_pseries
+#endif /* __DISABLED__ */
 	std	r10,PACA_EXSLB+EX_R10(r13)
 	std	r11,PACA_EXSLB+EX_R11(r13)
 	std	r12,PACA_EXSLB+EX_R12(r13)
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	mfspr	r9,SPRN_SPRG1
-	std	r9,PACA_EXSLB+EX_R13(r13)
-	mfcr	r9
+	mfspr	r10,SPRN_SPRG1
+	std	r10,PACA_EXSLB+EX_R13(r13)
 	mfspr	r12,SPRN_SRR1		/* and SRR1 */
-	mfspr	r3,SPRN_SRR0			/* SRR0 is faulting address */
-	b	.do_slb_miss		/* Rel. branch works in real mode */
+	b	.slb_miss_realmode	/* Rel. branch works in real mode */
 
 	STD_EXCEPTION_PSERIES(0x500, hardware_interrupt)
 	STD_EXCEPTION_PSERIES(0x600, alignment)
@@ -509,6 +519,38 @@ _GLOBAL(do_stab_bolted_pSeries)
 	EXCEPTION_PROLOG_PSERIES(PACA_EXSLB, .do_stab_bolted)
 
 /*
+ * We have some room here  we use that to put
+ * the peries slb miss user trampoline code so it's reasonably
+ * away from slb_miss_user_common to avoid problems with rfid
+ *
+ * This is used for when the SLB miss handler has to go virtual,
+ * which doesn't happen for now anymore but will once we re-implement
+ * dynamic VSIDs for shared page tables
+ */
+#ifdef __DISABLED__
+slb_miss_user_pseries:
+	std	r10,PACA_EXGEN+EX_R10(r13)
+	std	r11,PACA_EXGEN+EX_R11(r13)
+	std	r12,PACA_EXGEN+EX_R12(r13)
+	mfspr	r10,SPRG1
+	ld	r11,PACA_EXSLB+EX_R9(r13)
+	ld	r12,PACA_EXSLB+EX_R3(r13)
+	std	r10,PACA_EXGEN+EX_R13(r13)
+	std	r11,PACA_EXGEN+EX_R9(r13)
+	std	r12,PACA_EXGEN+EX_R3(r13)
+	clrrdi	r12,r13,32
+	mfmsr	r10
+	mfspr	r11,SRR0			/* save SRR0 */
+	ori	r12,r12,slb_miss_user_common@l	/* virt addr of handler */
+	ori	r10,r10,MSR_IR|MSR_DR|MSR_RI
+	mtspr	SRR0,r12
+	mfspr	r12,SRR1			/* and SRR1 */
+	mtspr	SRR1,r10
+	rfid
+	b	.				/* prevent spec. execution */
+#endif /* __DISABLED__ */
+
+/*
  * Vectors for the FWNMI option.  Share common code.
  */
 	.globl system_reset_fwnmi
@@ -559,22 +601,59 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
 	.globl	data_access_slb_iSeries
 data_access_slb_iSeries:
 	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	EXCEPTION_PROLOG_ISERIES_1(PACA_EXSLB)
+	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
 	std	r3,PACA_EXSLB+EX_R3(r13)
-	ld	r12,PACALPPACA+LPPACASRR1(r13)
 	mfspr	r3,SPRN_DAR
-	b	.do_slb_miss
+	std	r9,PACA_EXSLB+EX_R9(r13)
+	mfcr	r9
+#ifdef __DISABLED__
+	cmpdi	r3,0
+	bge	slb_miss_user_iseries
+#endif
+	std	r10,PACA_EXSLB+EX_R10(r13)
+	std	r11,PACA_EXSLB+EX_R11(r13)
+	std	r12,PACA_EXSLB+EX_R12(r13)
+	mfspr	r10,SPRN_SPRG1
+	std	r10,PACA_EXSLB+EX_R13(r13)
+	ld	r12,PACALPPACA+LPPACASRR1(r13);
+	b	.slb_miss_realmode
 
 	STD_EXCEPTION_ISERIES(0x400, instruction_access, PACA_EXGEN)
 
 	.globl	instruction_access_slb_iSeries
 instruction_access_slb_iSeries:
 	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	EXCEPTION_PROLOG_ISERIES_1(PACA_EXSLB)
+	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
 	std	r3,PACA_EXSLB+EX_R3(r13)
-	ld	r12,PACALPPACA+LPPACASRR1(r13)
-	ld	r3,PACALPPACA+LPPACASRR0(r13)
-	b	.do_slb_miss
+	ld	r3,PACALPPACA+LPPACASRR0(r13)	/* get SRR0 value */
+	std	r9,PACA_EXSLB+EX_R9(r13)
+	mfcr	r9
+#ifdef __DISABLED__
+	cmpdi	r3,0
+	bge	.slb_miss_user_iseries
+#endif
+	std	r10,PACA_EXSLB+EX_R10(r13)
+	std	r11,PACA_EXSLB+EX_R11(r13)
+	std	r12,PACA_EXSLB+EX_R12(r13)
+	mfspr	r10,SPRN_SPRG1
+	std	r10,PACA_EXSLB+EX_R13(r13)
+	ld	r12,PACALPPACA+LPPACASRR1(r13);
+	b	.slb_miss_realmode
+
+#ifdef __DISABLED__
+slb_miss_user_iseries:
+	std	r10,PACA_EXGEN+EX_R10(r13)
+	std	r11,PACA_EXGEN+EX_R11(r13)
+	std	r12,PACA_EXGEN+EX_R12(r13)
+	mfspr	r10,SPRG1
+	ld	r11,PACA_EXSLB+EX_R9(r13)
+	ld	r12,PACA_EXSLB+EX_R3(r13)
+	std	r10,PACA_EXGEN+EX_R13(r13)
+	std	r11,PACA_EXGEN+EX_R9(r13)
+	std	r12,PACA_EXGEN+EX_R3(r13)
+	EXCEPTION_PROLOG_ISERIES_2
+	b	slb_miss_user_common
+#endif
 
 	MASKABLE_EXCEPTION_ISERIES(0x500, hardware_interrupt)
 	STD_EXCEPTION_ISERIES(0x600, alignment, PACA_EXGEN)
@@ -809,6 +888,126 @@ instruction_access_common:
 	li	r5,0x400
 	b	.do_hash_page		/* Try to handle as hpte fault */
 
+/*
+ * Here is the common SLB miss user that is used when going to virtual
+ * mode for SLB misses, that is currently not used
+ */
+#ifdef __DISABLED__
+	.align	7
+	.globl	slb_miss_user_common
+slb_miss_user_common:
+	mflr	r10
+	std	r3,PACA_EXGEN+EX_DAR(r13)
+	stw	r9,PACA_EXGEN+EX_CCR(r13)
+	std	r10,PACA_EXGEN+EX_LR(r13)
+	std	r11,PACA_EXGEN+EX_SRR0(r13)
+	bl	.slb_allocate_user
+
+	ld	r10,PACA_EXGEN+EX_LR(r13)
+	ld	r3,PACA_EXGEN+EX_R3(r13)
+	lwz	r9,PACA_EXGEN+EX_CCR(r13)
+	ld	r11,PACA_EXGEN+EX_SRR0(r13)
+	mtlr	r10
+	beq-	slb_miss_fault
+
+	andi.	r10,r12,MSR_RI		/* check for unrecoverable exception */
+	beq-	unrecov_user_slb
+	mfmsr	r10
+
+.machine push
+.machine "power4"
+	mtcrf	0x80,r9
+.machine pop
+
+	clrrdi	r10,r10,2		/* clear RI before setting SRR0/1 */
+	mtmsrd	r10,1
+
+	mtspr	SRR0,r11
+	mtspr	SRR1,r12
+
+	ld	r9,PACA_EXGEN+EX_R9(r13)
+	ld	r10,PACA_EXGEN+EX_R10(r13)
+	ld	r11,PACA_EXGEN+EX_R11(r13)
+	ld	r12,PACA_EXGEN+EX_R12(r13)
+	ld	r13,PACA_EXGEN+EX_R13(r13)
+	rfid
+	b	.
+
+slb_miss_fault:
+	EXCEPTION_PROLOG_COMMON(0x380, PACA_EXGEN)
+	ld	r4,PACA_EXGEN+EX_DAR(r13)
+	li	r5,0
+	std	r4,_DAR(r1)
+	std	r5,_DSISR(r1)
+	b	.handle_page_fault
+
+unrecov_user_slb:
+	EXCEPTION_PROLOG_COMMON(0x4200, PACA_EXGEN)
+	DISABLE_INTS
+	bl	.save_nvgprs
+1:	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	.unrecoverable_exception
+	b	1b
+
+#endif /* __DISABLED__ */
+
+
+/*
+ * r13 points to the PACA, r9 contains the saved CR,
+ * r12 contain the saved SRR1, SRR0 is still ready for return
+ * r3 has the faulting address
+ * r9 - r13 are saved in paca->exslb.
+ * r3 is saved in paca->slb_r3
+ * We assume we aren't going to take any exceptions during this procedure.
+ */
+_GLOBAL(slb_miss_realmode)
+	mflr	r10
+
+	stw	r9,PACA_EXSLB+EX_CCR(r13)	/* save CR in exc. frame */
+	std	r10,PACA_EXSLB+EX_LR(r13)	/* save LR */
+
+	bl	.slb_allocate_realmode
+
+	/* All done -- return from exception. */
+
+	ld	r10,PACA_EXSLB+EX_LR(r13)
+	ld	r3,PACA_EXSLB+EX_R3(r13)
+	lwz	r9,PACA_EXSLB+EX_CCR(r13)	/* get saved CR */
+#ifdef CONFIG_PPC_ISERIES
+	ld	r11,PACALPPACA+LPPACASRR0(r13)	/* get SRR0 value */
+#endif /* CONFIG_PPC_ISERIES */
+
+	mtlr	r10
+
+	andi.	r10,r12,MSR_RI	/* check for unrecoverable exception */
+	beq-	unrecov_slb
+
+.machine	push
+.machine	"power4"
+	mtcrf	0x80,r9
+	mtcrf	0x01,r9		/* slb_allocate uses cr0 and cr7 */
+.machine	pop
+
+#ifdef CONFIG_PPC_ISERIES
+	mtspr	SPRN_SRR0,r11
+	mtspr	SPRN_SRR1,r12
+#endif /* CONFIG_PPC_ISERIES */
+	ld	r9,PACA_EXSLB+EX_R9(r13)
+	ld	r10,PACA_EXSLB+EX_R10(r13)
+	ld	r11,PACA_EXSLB+EX_R11(r13)
+	ld	r12,PACA_EXSLB+EX_R12(r13)
+	ld	r13,PACA_EXSLB+EX_R13(r13)
+	rfid
+	b	.	/* prevent speculative execution */
+
+unrecov_slb:
+	EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
+	DISABLE_INTS
+	bl	.save_nvgprs
+1:	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	.unrecoverable_exception
+	b	1b
+
 	.align	7
 	.globl hardware_interrupt_common
 	.globl hardware_interrupt_entry
@@ -1139,62 +1338,6 @@ _GLOBAL(do_stab_bolted)
 	b	.	/* prevent speculative execution */
 
 /*
- * r13 points to the PACA, r9 contains the saved CR,
- * r11 and r12 contain the saved SRR0 and SRR1.
- * r3 has the faulting address
- * r9 - r13 are saved in paca->exslb.
- * r3 is saved in paca->slb_r3
- * We assume we aren't going to take any exceptions during this procedure.
- */
-_GLOBAL(do_slb_miss)
-	mflr	r10
-
-	stw	r9,PACA_EXSLB+EX_CCR(r13)	/* save CR in exc. frame */
-	std	r10,PACA_EXSLB+EX_LR(r13)	/* save LR */
-
-	bl	.slb_allocate			/* handle it */
-
-	/* All done -- return from exception. */
-
-	ld	r10,PACA_EXSLB+EX_LR(r13)
-	ld	r3,PACA_EXSLB+EX_R3(r13)
-	lwz	r9,PACA_EXSLB+EX_CCR(r13)	/* get saved CR */
-#ifdef CONFIG_PPC_ISERIES
-	ld	r11,PACALPPACA+LPPACASRR0(r13)	/* get SRR0 value */
-#endif /* CONFIG_PPC_ISERIES */
-
-	mtlr	r10
-
-	andi.	r10,r12,MSR_RI	/* check for unrecoverable exception */
-	beq-	unrecov_slb
-
-.machine	push
-.machine	"power4"
-	mtcrf	0x80,r9
-	mtcrf	0x01,r9		/* slb_allocate uses cr0 and cr7 */
-.machine	pop
-
-#ifdef CONFIG_PPC_ISERIES
-	mtspr	SPRN_SRR0,r11
-	mtspr	SPRN_SRR1,r12
-#endif /* CONFIG_PPC_ISERIES */
-	ld	r9,PACA_EXSLB+EX_R9(r13)
-	ld	r10,PACA_EXSLB+EX_R10(r13)
-	ld	r11,PACA_EXSLB+EX_R11(r13)
-	ld	r12,PACA_EXSLB+EX_R12(r13)
-	ld	r13,PACA_EXSLB+EX_R13(r13)
-	rfid
-	b	.	/* prevent speculative execution */
-
-unrecov_slb:
-	EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
-	DISABLE_INTS
-	bl	.save_nvgprs
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.unrecoverable_exception
-	b	1b
-
-/*
  * Space for CPU0's segment table.
  *
  * On iSeries, the hypervisor must fill in at least one entry before
@@ -1569,7 +1712,10 @@ _GLOBAL(__secondary_start)
 #endif
 	/* Initialize the first segment table (or SLB) entry		 */
 	ld	r3,PACASTABVIRT(r13)	/* get addr of segment table	 */
+BEGIN_FTR_SECTION
 	bl	.stab_initialize
+END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
+	bl	.slb_initialize
 
 	/* Initialize the kernel stack.  Just a repeat for iSeries.	 */
 	LOADADDR(r3,current_set)
diff --git a/arch/ppc64/kernel/pacaData.c b/arch/ppc64/kernel/pacaData.c
index 5e27e5a6a35..3133c72b28e 100644
--- a/arch/ppc64/kernel/pacaData.c
+++ b/arch/ppc64/kernel/pacaData.c
@@ -23,7 +23,7 @@
 static union {
 	struct systemcfg	data;
 	u8			page[PAGE_SIZE];
-} systemcfg_store __page_aligned;
+} systemcfg_store __attribute__((__section__(".data.page.aligned")));
 struct systemcfg *systemcfg = &systemcfg_store.data;
 EXPORT_SYMBOL(systemcfg);
 
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index a4cb97a2581..0e8961dea3b 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -634,10 +634,10 @@ static inline char *find_flat_dt_string(u32 offset)
  * used to extract the memory informations at boot before we can
  * unflatten the tree
  */
-static int __init scan_flat_dt(int (*it)(unsigned long node,
-					 const char *uname, int depth,
-					 void *data),
-			       void *data)
+int __init of_scan_flat_dt(int (*it)(unsigned long node,
+				     const char *uname, int depth,
+				     void *data),
+			   void *data)
 {
 	unsigned long p = ((unsigned long)initial_boot_params) +
 		initial_boot_params->off_dt_struct;
@@ -694,8 +694,8 @@ static int __init scan_flat_dt(int (*it)(unsigned long node,
  * This  function can be used within scan_flattened_dt callback to get
  * access to properties
  */
-static void* __init get_flat_dt_prop(unsigned long node, const char *name,
-				     unsigned long *size)
+void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
+				 unsigned long *size)
 {
 	unsigned long p = node;
 
@@ -995,7 +995,7 @@ void __init unflatten_device_tree(void)
 static int __init early_init_dt_scan_cpus(unsigned long node,
 					  const char *uname, int depth, void *data)
 {
-	char *type = get_flat_dt_prop(node, "device_type", NULL);
+	char *type = of_get_flat_dt_prop(node, "device_type", NULL);
 	u32 *prop;
 	unsigned long size;
 
@@ -1003,17 +1003,6 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 	if (type == NULL || strcmp(type, "cpu") != 0)
 		return 0;
 
-	/* On LPAR, look for the first ibm,pft-size property for the  hash table size
-	 */
-	if (systemcfg->platform == PLATFORM_PSERIES_LPAR && ppc64_pft_size == 0) {
-		u32 *pft_size;
-		pft_size = (u32 *)get_flat_dt_prop(node, "ibm,pft-size", NULL);
-		if (pft_size != NULL) {
-			/* pft_size[0] is the NUMA CEC cookie */
-			ppc64_pft_size = pft_size[1];
-		}
-	}
-
 	if (initial_boot_params && initial_boot_params->version >= 2) {
 		/* version 2 of the kexec param format adds the phys cpuid
 		 * of booted proc.
@@ -1022,8 +1011,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 		boot_cpuid = 0;
 	} else {
 		/* Check if it's the boot-cpu, set it's hw index in paca now */
-		if (get_flat_dt_prop(node, "linux,boot-cpu", NULL) != NULL) {
-			u32 *prop = get_flat_dt_prop(node, "reg", NULL);
+		if (of_get_flat_dt_prop(node, "linux,boot-cpu", NULL)
+		    != NULL) {
+			u32 *prop = of_get_flat_dt_prop(node, "reg", NULL);
 			set_hard_smp_processor_id(0, prop == NULL ? 0 : *prop);
 			boot_cpuid_phys = get_hard_smp_processor_id(0);
 		}
@@ -1031,14 +1021,14 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 
 #ifdef CONFIG_ALTIVEC
 	/* Check if we have a VMX and eventually update CPU features */
-	prop = (u32 *)get_flat_dt_prop(node, "ibm,vmx", NULL);
+	prop = (u32 *)of_get_flat_dt_prop(node, "ibm,vmx", NULL);
 	if (prop && (*prop) > 0) {
 		cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC;
 		cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC;
 	}
 
 	/* Same goes for Apple's "altivec" property */
-	prop = (u32 *)get_flat_dt_prop(node, "altivec", NULL);
+	prop = (u32 *)of_get_flat_dt_prop(node, "altivec", NULL);
 	if (prop) {
 		cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC;
 		cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC;
@@ -1050,7 +1040,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 	 * this by looking at the size of the ibm,ppc-interrupt-server#s
 	 * property
 	 */
-	prop = (u32 *)get_flat_dt_prop(node, "ibm,ppc-interrupt-server#s",
+	prop = (u32 *)of_get_flat_dt_prop(node, "ibm,ppc-interrupt-server#s",
 				       &size);
 	cur_cpu_spec->cpu_features &= ~CPU_FTR_SMT;
 	if (prop && ((size / sizeof(u32)) > 1))
@@ -1071,26 +1061,26 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
 		return 0;
 
 	/* get platform type */
-	prop = (u32 *)get_flat_dt_prop(node, "linux,platform", NULL);
+	prop = (u32 *)of_get_flat_dt_prop(node, "linux,platform", NULL);
 	if (prop == NULL)
 		return 0;
 	systemcfg->platform = *prop;
 
 	/* check if iommu is forced on or off */
-	if (get_flat_dt_prop(node, "linux,iommu-off", NULL) != NULL)
+	if (of_get_flat_dt_prop(node, "linux,iommu-off", NULL) != NULL)
 		iommu_is_off = 1;
-	if (get_flat_dt_prop(node, "linux,iommu-force-on", NULL) != NULL)
+	if (of_get_flat_dt_prop(node, "linux,iommu-force-on", NULL) != NULL)
 		iommu_force_on = 1;
 
- 	prop64 = (u64*)get_flat_dt_prop(node, "linux,memory-limit", NULL);
+ 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
  	if (prop64)
  		memory_limit = *prop64;
 
- 	prop64 = (u64*)get_flat_dt_prop(node, "linux,tce-alloc-start", NULL);
+ 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,tce-alloc-start",NULL);
  	if (prop64)
  		tce_alloc_start = *prop64;
 
- 	prop64 = (u64*)get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
+ 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
  	if (prop64)
  		tce_alloc_end = *prop64;
 
@@ -1101,9 +1091,12 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
 	{
 		u64 *basep, *entryp;
 
-		basep = (u64*)get_flat_dt_prop(node, "linux,rtas-base", NULL);
-		entryp = (u64*)get_flat_dt_prop(node, "linux,rtas-entry", NULL);
-		prop = (u32*)get_flat_dt_prop(node, "linux,rtas-size", NULL);
+		basep = (u64*)of_get_flat_dt_prop(node,
+						  "linux,rtas-base", NULL);
+		entryp = (u64*)of_get_flat_dt_prop(node,
+						   "linux,rtas-entry", NULL);
+		prop = (u32*)of_get_flat_dt_prop(node,
+						 "linux,rtas-size", NULL);
 		if (basep && entryp && prop) {
 			rtas.base = *basep;
 			rtas.entry = *entryp;
@@ -1124,11 +1117,11 @@ static int __init early_init_dt_scan_root(unsigned long node,
 	if (depth != 0)
 		return 0;
 
-	prop = (u32 *)get_flat_dt_prop(node, "#size-cells", NULL);
+	prop = (u32 *)of_get_flat_dt_prop(node, "#size-cells", NULL);
 	dt_root_size_cells = (prop == NULL) ? 1 : *prop;
 	DBG("dt_root_size_cells = %x\n", dt_root_size_cells);
 
-	prop = (u32 *)get_flat_dt_prop(node, "#address-cells", NULL);
+	prop = (u32 *)of_get_flat_dt_prop(node, "#address-cells", NULL);
 	dt_root_addr_cells = (prop == NULL) ? 2 : *prop;
 	DBG("dt_root_addr_cells = %x\n", dt_root_addr_cells);
 	
@@ -1160,7 +1153,7 @@ static unsigned long __init dt_mem_next_cell(int s, cell_t **cellp)
 static int __init early_init_dt_scan_memory(unsigned long node,
 					    const char *uname, int depth, void *data)
 {
-	char *type = get_flat_dt_prop(node, "device_type", NULL);
+	char *type = of_get_flat_dt_prop(node, "device_type", NULL);
 	cell_t *reg, *endp;
 	unsigned long l;
 
@@ -1168,7 +1161,7 @@ static int __init early_init_dt_scan_memory(unsigned long node,
 	if (type == NULL || strcmp(type, "memory") != 0)
 		return 0;
 
-	reg = (cell_t *)get_flat_dt_prop(node, "reg", &l);
+	reg = (cell_t *)of_get_flat_dt_prop(node, "reg", &l);
 	if (reg == NULL)
 		return 0;
 
@@ -1224,19 +1217,16 @@ void __init early_init_devtree(void *params)
 	/* Setup flat device-tree pointer */
 	initial_boot_params = params;
 
-	/* By default, hash size is not set */
-	ppc64_pft_size = 0;
-
 	/* Retreive various informations from the /chosen node of the
 	 * device-tree, including the platform type, initrd location and
 	 * size, TCE reserve, and more ...
 	 */
-	scan_flat_dt(early_init_dt_scan_chosen, NULL);
+	of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
 
 	/* Scan memory nodes and rebuild LMBs */
 	lmb_init();
-	scan_flat_dt(early_init_dt_scan_root, NULL);
-	scan_flat_dt(early_init_dt_scan_memory, NULL);
+	of_scan_flat_dt(early_init_dt_scan_root, NULL);
+	of_scan_flat_dt(early_init_dt_scan_memory, NULL);
 	lmb_enforce_memory_limit(memory_limit);
 	lmb_analyze();
 	systemcfg->physicalMemorySize = lmb_phys_mem_size();
@@ -1252,26 +1242,8 @@ void __init early_init_devtree(void *params)
 	/* Retreive hash table size from flattened tree plus other
 	 * CPU related informations (altivec support, boot CPU ID, ...)
 	 */
-	scan_flat_dt(early_init_dt_scan_cpus, NULL);
-
-	/* If hash size wasn't obtained above, we calculate it now based on
-	 * the total RAM size
-	 */
-	if (ppc64_pft_size == 0) {
-		unsigned long rnd_mem_size, pteg_count;
-
-		/* round mem_size up to next power of 2 */
-		rnd_mem_size = 1UL << __ilog2(systemcfg->physicalMemorySize);
-		if (rnd_mem_size < systemcfg->physicalMemorySize)
-			rnd_mem_size <<= 1;
-
-		/* # pages / 2 */
-		pteg_count = max(rnd_mem_size >> (12 + 1), 1UL << 11);
-
-		ppc64_pft_size = __ilog2(pteg_count << 7);
-	}
+	of_scan_flat_dt(early_init_dt_scan_cpus, NULL);
 
-	DBG("Hash pftSize: %x\n", (int)ppc64_pft_size);
 	DBG(" <- early_init_devtree()\n");
 }