ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc

32-bit CHRP machines are now supported only in arch/powerpc, as are
all 64-bit PowerPC processors.  This means that we don't use
Open Firmware on any platform in arch/ppc any more.

This makes PReP support a single-platform option like every other
platform support option in arch/ppc now, thus CONFIG_PPC_MULTIPLATFORM
is gone from arch/ppc.  CONFIG_PPC_PREP is the option that selects
PReP support and is generally what has replaced
CONFIG_PPC_MULTIPLATFORM within arch/ppc.

_machine is all but dead now, being #defined to 0.

Updated Makefiles, comments and Kconfig options generally to reflect
these changes.

Signed-off-by: Paul Mackerras <paulus@samba.org>

6 files changed, 12 insertions, 903 deletions

diff --git a/arch/ppc/kernel/entry.S b/arch/ppc/kernel/entry.S
index fa8d49789ef..5891ecbdc70 100644
--- a/arch/ppc/kernel/entry.S
+++ b/arch/ppc/kernel/entry.S
@@ -930,55 +930,3 @@ END_FTR_SECTION_IFSET(CPU_FTR_601)
 	b	4b
 
 	.comm	ee_restarts,4
-
-/*
- * PROM code for specific machines follows.  Put it
- * here so it's easy to add arch-specific sections later.
- * -- Cort
- */
-#ifdef CONFIG_PPC_OF
-/*
- * On CHRP, the Run-Time Abstraction Services (RTAS) have to be
- * called with the MMU off.
- */
-_GLOBAL(enter_rtas)
-	stwu	r1,-INT_FRAME_SIZE(r1)
-	mflr	r0
-	stw	r0,INT_FRAME_SIZE+4(r1)
-	lis	r4,rtas_data@ha
-	lwz	r4,rtas_data@l(r4)
-	lis	r6,1f@ha	/* physical return address for rtas */
-	addi	r6,r6,1f@l
-	tophys(r6,r6)
-	tophys(r7,r1)
-	lis	r8,rtas_entry@ha
-	lwz	r8,rtas_entry@l(r8)
-	mfmsr	r9
-	stw	r9,8(r1)
-	LOAD_MSR_KERNEL(r0,MSR_KERNEL)
-	SYNC			/* disable interrupts so SRR0/1 */
-	MTMSRD(r0)		/* don't get trashed */
-	li	r9,MSR_KERNEL & ~(MSR_IR|MSR_DR)
-	mtlr	r6
-	CLR_TOP32(r7)
-	mtspr	SPRN_SPRG2,r7
-	mtspr	SPRN_SRR0,r8
-	mtspr	SPRN_SRR1,r9
-	RFI
-1:	tophys(r9,r1)
-	lwz	r8,INT_FRAME_SIZE+4(r9)	/* get return address */
-	lwz	r9,8(r9)	/* original msr value */
-	FIX_SRR1(r9,r0)
-	addi	r1,r1,INT_FRAME_SIZE
-	li	r0,0
-	mtspr	SPRN_SPRG2,r0
-	mtspr	SPRN_SRR0,r8
-	mtspr	SPRN_SRR1,r9
-	RFI			/* return to caller */
-
-	.globl	machine_check_in_rtas
-machine_check_in_rtas:
-	twi	31,0,0
-	/* XXX load up BATs and panic */
-
-#endif /* CONFIG_PPC_OF */
diff --git a/arch/ppc/kernel/head.S b/arch/ppc/kernel/head.S
index 53ea845fb91..01303efedda 100644
--- a/arch/ppc/kernel/head.S
+++ b/arch/ppc/kernel/head.S
@@ -37,19 +37,6 @@
 #include <asm/amigappc.h>
 #endif
 
-#ifdef CONFIG_PPC64BRIDGE
-#define LOAD_BAT(n, reg, RA, RB)	\
-	ld	RA,(n*32)+0(reg);	\
-	ld	RB,(n*32)+8(reg);	\
-	mtspr	SPRN_IBAT##n##U,RA;	\
-	mtspr	SPRN_IBAT##n##L,RB;	\
-	ld	RA,(n*32)+16(reg);	\
-	ld	RB,(n*32)+24(reg);	\
-	mtspr	SPRN_DBAT##n##U,RA;	\
-	mtspr	SPRN_DBAT##n##L,RB;	\
-
-#else /* CONFIG_PPC64BRIDGE */
-
 /* 601 only have IBAT; cr0.eq is set on 601 when using this macro */
 #define LOAD_BAT(n, reg, RA, RB)	\
 	/* see the comment for clear_bats() -- Cort */ \
@@ -66,7 +53,6 @@
 	mtspr	SPRN_DBAT##n##U,RA;	\
 	mtspr	SPRN_DBAT##n##L,RB;	\
 1:
-#endif /* CONFIG_PPC64BRIDGE */
 
 	.text
 	.stabs	"arch/ppc/kernel/",N_SO,0,0,0f
@@ -129,11 +115,6 @@ _start:
 
 	.globl	__start
 __start:
-/*
- * We have to do any OF calls before we map ourselves to KERNELBASE,
- * because OF may have I/O devices mapped into that area
- * (particularly on CHRP).
- */
 	mr	r31,r3			/* save parameters */
 	mr	r30,r4
 	mr	r29,r5
@@ -148,14 +129,6 @@ __start:
  */
 	bl	early_init
 
-/*
- * On POWER4, we first need to tweak some CPU configuration registers
- * like real mode cache inhibit or exception base
- */
-#ifdef CONFIG_POWER4
-	bl	__970_cpu_preinit
-#endif /* CONFIG_POWER4 */
-
 #ifdef CONFIG_APUS
 /* On APUS the __va/__pa constants need to be set to the correct
  * values before continuing.
@@ -169,7 +142,6 @@ __start:
  */
  	bl	mmu_off
 __after_mmu_off:
-#ifndef CONFIG_POWER4
 	bl	clear_bats
 	bl	flush_tlbs
 
@@ -177,10 +149,6 @@ __after_mmu_off:
 #if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
 	bl	setup_disp_bat
 #endif
-#else /* CONFIG_POWER4 */
-	bl	reloc_offset
-	bl	initial_mm_power4
-#endif /* CONFIG_POWER4 */
 
 /*
  * Call setup_cpu for CPU 0 and initialize 6xx Idle
@@ -192,18 +160,11 @@ __after_mmu_off:
 	bl	reloc_offset
 	bl	init_idle_6xx
 #endif /* CONFIG_6xx */
-#ifdef CONFIG_POWER4
-	bl	reloc_offset
-	bl	init_idle_power4
-#endif /* CONFIG_POWER4 */
 
 
 #ifndef CONFIG_APUS
 /*
  * We need to run with _start at physical address 0.
- * On CHRP, we are loaded at 0x10000 since OF on CHRP uses
- * the exception vectors at 0 (and therefore this copy
- * overwrites OF's exception vectors with our own).
  * If the MMU is already turned on, we copy stuff to KERNELBASE,
  * otherwise we copy it to 0.
  */
@@ -358,51 +319,19 @@ i##n:								\
 #endif
 
 /* Machine check */
-/*
- * On CHRP, this is complicated by the fact that we could get a
- * machine check inside RTAS, and we have no guarantee that certain
- * critical registers will have the values we expect.  The set of
- * registers that might have bad values includes all the GPRs
- * and all the BATs.  We indicate that we are in RTAS by putting
- * a non-zero value, the address of the exception frame to use,
- * in SPRG2.  The machine check handler checks SPRG2 and uses its
- * value if it is non-zero.  If we ever needed to free up SPRG2,
- * we could use a field in the thread_info or thread_struct instead.
- * (Other exception handlers assume that r1 is a valid kernel stack
- * pointer when we take an exception from supervisor mode.)
- *	-- paulus.
- */
 	. = 0x200
 	mtspr	SPRN_SPRG0,r10
 	mtspr	SPRN_SPRG1,r11
 	mfcr	r10
-#ifdef CONFIG_PPC_CHRP
-	mfspr	r11,SPRN_SPRG2
-	cmpwi	0,r11,0
-	bne	7f
-#endif /* CONFIG_PPC_CHRP */
 	EXCEPTION_PROLOG_1
 7:	EXCEPTION_PROLOG_2
 	addi	r3,r1,STACK_FRAME_OVERHEAD
-#ifdef CONFIG_PPC_CHRP
-	mfspr	r4,SPRN_SPRG2
-	cmpwi	cr1,r4,0
-	bne	cr1,1f
-#endif
 	EXC_XFER_STD(0x200, machine_check_exception)
-#ifdef CONFIG_PPC_CHRP
-1:	b	machine_check_in_rtas
-#endif
 
 /* Data access exception. */
 	. = 0x300
-#ifdef CONFIG_PPC64BRIDGE
-	b	DataAccess
-DataAccessCont:
-#else
 DataAccess:
 	EXCEPTION_PROLOG
-#endif /* CONFIG_PPC64BRIDGE */
 	mfspr	r10,SPRN_DSISR
 	andis.	r0,r10,0xa470		/* weird error? */
 	bne	1f			/* if not, try to put a PTE */
@@ -414,21 +343,10 @@ DataAccess:
 	mfspr	r4,SPRN_DAR
 	EXC_XFER_EE_LITE(0x300, handle_page_fault)
 
-#ifdef CONFIG_PPC64BRIDGE
-/* SLB fault on data access. */
-	. = 0x380
-	b	DataSegment
-#endif /* CONFIG_PPC64BRIDGE */
-
 /* Instruction access exception. */
 	. = 0x400
-#ifdef CONFIG_PPC64BRIDGE
-	b	InstructionAccess
-InstructionAccessCont:
-#else
 InstructionAccess:
 	EXCEPTION_PROLOG
-#endif /* CONFIG_PPC64BRIDGE */
 	andis.	r0,r9,0x4000		/* no pte found? */
 	beq	1f			/* if so, try to put a PTE */
 	li	r3,0			/* into the hash table */
@@ -438,12 +356,6 @@ InstructionAccess:
 	mr	r5,r9
 	EXC_XFER_EE_LITE(0x400, handle_page_fault)
 
-#ifdef CONFIG_PPC64BRIDGE
-/* SLB fault on instruction access. */
-	. = 0x480
-	b	InstructionSegment
-#endif /* CONFIG_PPC64BRIDGE */
-
 /* External interrupt */
 	EXCEPTION(0x500, HardwareInterrupt, do_IRQ, EXC_XFER_LITE)
 
@@ -708,15 +620,9 @@ DataStoreTLBMiss:
 	EXCEPTION(0x1300, Trap_13, instruction_breakpoint_exception, EXC_XFER_EE)
 	EXCEPTION(0x1400, SMI, SMIException, EXC_XFER_EE)
 	EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_EE)
-#ifdef CONFIG_POWER4
-	EXCEPTION(0x1600, Trap_16, unknown_exception, EXC_XFER_EE)
-	EXCEPTION(0x1700, Trap_17, altivec_assist_exception, EXC_XFER_EE)
-	EXCEPTION(0x1800, Trap_18, TAUException, EXC_XFER_STD)
-#else /* !CONFIG_POWER4 */
 	EXCEPTION(0x1600, Trap_16, altivec_assist_exception, EXC_XFER_EE)
 	EXCEPTION(0x1700, Trap_17, TAUException, EXC_XFER_STD)
 	EXCEPTION(0x1800, Trap_18, unknown_exception, EXC_XFER_EE)
-#endif /* CONFIG_POWER4 */
 	EXCEPTION(0x1900, Trap_19, unknown_exception, EXC_XFER_EE)
 	EXCEPTION(0x1a00, Trap_1a, unknown_exception, EXC_XFER_EE)
 	EXCEPTION(0x1b00, Trap_1b, unknown_exception, EXC_XFER_EE)
@@ -754,28 +660,6 @@ AltiVecUnavailable:
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception)
 
-#ifdef CONFIG_PPC64BRIDGE
-DataAccess:
-	EXCEPTION_PROLOG
-	b	DataAccessCont
-
-InstructionAccess:
-	EXCEPTION_PROLOG
-	b	InstructionAccessCont
-
-DataSegment:
-	EXCEPTION_PROLOG
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	mfspr	r4,SPRN_DAR
-	stw	r4,_DAR(r11)
-	EXC_XFER_STD(0x380, unknown_exception)
-
-InstructionSegment:
-	EXCEPTION_PROLOG
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	EXC_XFER_STD(0x480, unknown_exception)
-#endif /* CONFIG_PPC64BRIDGE */
-
 #ifdef CONFIG_ALTIVEC
 /* Note that the AltiVec support is closely modeled after the FP
  * support.  Changes to one are likely to be applicable to the
@@ -1048,13 +932,6 @@ __secondary_start_pmac_0:
 
 	.globl	__secondary_start
 __secondary_start:
-#ifdef CONFIG_PPC64BRIDGE
-	mfmsr	r0
-	clrldi	r0,r0,1			/* make sure it's in 32-bit mode */
-	SYNC
-	MTMSRD(r0)
-	isync
-#endif
 	/* Copy some CPU settings from CPU 0 */
 	bl	__restore_cpu_setup
 
@@ -1065,10 +942,6 @@ __secondary_start:
 	lis	r3,-KERNELBASE@h
 	bl	init_idle_6xx
 #endif /* CONFIG_6xx */
-#ifdef CONFIG_POWER4
-	lis	r3,-KERNELBASE@h
-	bl	init_idle_power4
-#endif /* CONFIG_POWER4 */
 
 	/* get current_thread_info and current */
 	lis	r1,secondary_ti@ha
@@ -1109,12 +982,12 @@ __secondary_start:
  * Those generic dummy functions are kept for CPUs not
  * included in CONFIG_6xx
  */
-#if !defined(CONFIG_6xx) && !defined(CONFIG_POWER4)
+#if !defined(CONFIG_6xx)
 _GLOBAL(__save_cpu_setup)
 	blr
 _GLOBAL(__restore_cpu_setup)
 	blr
-#endif /* !defined(CONFIG_6xx) && !defined(CONFIG_POWER4) */
+#endif /* !defined(CONFIG_6xx) */
 
 
 /*
@@ -1132,11 +1005,6 @@ load_up_mmu:
 	tophys(r6,r6)
 	lwz	r6,_SDR1@l(r6)
 	mtspr	SPRN_SDR1,r6
-#ifdef CONFIG_PPC64BRIDGE
-	/* clear the ASR so we only use the pseudo-segment registers. */
-	li	r6,0
-	mtasr	r6
-#endif /* CONFIG_PPC64BRIDGE */
 	li	r0,16		/* load up segment register values */
 	mtctr	r0		/* for context 0 */
 	lis	r3,0x2000	/* Ku = 1, VSID = 0 */
@@ -1145,7 +1013,7 @@ load_up_mmu:
 	addi	r3,r3,0x111	/* increment VSID */
 	addis	r4,r4,0x1000	/* address of next segment */
 	bdnz	3b
-#ifndef CONFIG_POWER4
+
 /* Load the BAT registers with the values set up by MMU_init.
    MMU_init takes care of whether we're on a 601 or not. */
 	mfpvr	r3
@@ -1158,7 +1026,7 @@ load_up_mmu:
 	LOAD_BAT(1,r3,r4,r5)
 	LOAD_BAT(2,r3,r4,r5)
 	LOAD_BAT(3,r3,r4,r5)
-#endif /* CONFIG_POWER4 */
+
 	blr
 
 /*
@@ -1269,9 +1137,6 @@ _GLOBAL(set_context)
 	li	r4,0
 	isync
 3:
-#ifdef CONFIG_PPC64BRIDGE
-	slbie	r4
-#endif /* CONFIG_PPC64BRIDGE */
 	mtsrin	r3,r4
 	addi	r3,r3,0x111	/* next VSID */
 	rlwinm	r3,r3,0,8,3	/* clear out any overflow from VSID field */
@@ -1358,7 +1223,6 @@ mmu_off:
 	sync
 	RFI
 
-#ifndef CONFIG_POWER4
 /*
  * Use the first pair of BAT registers to map the 1st 16MB
  * of RAM to KERNELBASE.  From this point on we can't safely
@@ -1366,7 +1230,6 @@ mmu_off:
  */
 initial_bats:
 	lis	r11,KERNELBASE@h
-#ifndef CONFIG_PPC64BRIDGE
 	mfspr	r9,SPRN_PVR
 	rlwinm	r9,r9,16,16,31		/* r9 = 1 for 601, 4 for 604 */
 	cmpwi	0,r9,1
@@ -1381,7 +1244,6 @@ initial_bats:
 	mtspr	SPRN_IBAT1L,r10
 	isync
 	blr
-#endif /* CONFIG_PPC64BRIDGE */
 
 4:	tophys(r8,r11)
 #ifdef CONFIG_SMP
@@ -1395,11 +1257,6 @@ initial_bats:
 	ori	r11,r11,BL_256M<<2|0x2	/* set up BAT registers for 604 */
 #endif /* CONFIG_APUS */
 
-#ifdef CONFIG_PPC64BRIDGE
-	/* clear out the high 32 bits in the BAT */
-	clrldi	r11,r11,32
-	clrldi	r8,r8,32
-#endif /* CONFIG_PPC64BRIDGE */
 	mtspr	SPRN_DBAT0L,r8		/* N.B. 6xx (not 601) have valid */
 	mtspr	SPRN_DBAT0U,r11		/* bit in upper BAT register */
 	mtspr	SPRN_IBAT0L,r8
@@ -1432,38 +1289,6 @@ setup_disp_bat:
 
 #endif /* !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) */
 
-#else /* CONFIG_POWER4 */
-/*
- * Load up the SDR1 and segment register values now
- * since we don't have the BATs.
- * Also make sure we are running in 32-bit mode.
- */
-
-initial_mm_power4:
-	addis	r14,r3,_SDR1@ha		/* get the value from _SDR1 */
-	lwz	r14,_SDR1@l(r14)	/* assume hash table below 4GB */
-	mtspr	SPRN_SDR1,r14
-	slbia
-	lis	r4,0x2000		/* set pseudo-segment reg 12 */
-	ori	r5,r4,0x0ccc
-	mtsr	12,r5
-#if 0
-	ori	r5,r4,0x0888		/* set pseudo-segment reg 8 */
-	mtsr	8,r5			/* (for access to serial port) */
-#endif
-#ifdef CONFIG_BOOTX_TEXT
-	ori	r5,r4,0x0999		/* set pseudo-segment reg 9 */
-	mtsr	9,r5			/* (for access to screen) */
-#endif
-	mfmsr	r0
-	clrldi	r0,r0,1
-	sync
-	mtmsr	r0
-	isync
-	blr
-
-#endif /* CONFIG_POWER4 */
-
 #ifdef CONFIG_8260
 /* Jump into the system reset for the rom.
  * We first disable the MMU, and then jump to the ROM reset address.
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c
index 04d04c5bfdd..809673a36f7 100644
--- a/arch/ppc/kernel/pci.c
+++ b/arch/ppc/kernel/pci.c
@@ -46,9 +46,6 @@ static void pcibios_fixup_resources(struct pci_dev* dev);
 static void fixup_broken_pcnet32(struct pci_dev* dev);
 static int reparent_resources(struct resource *parent, struct resource *res);
 static void fixup_cpc710_pci64(struct pci_dev* dev);
-#ifdef CONFIG_PPC_OF
-static u8* pci_to_OF_bus_map;
-#endif
 
 /* By default, we don't re-assign bus numbers.
  */
@@ -625,406 +622,13 @@ pcibios_alloc_controller(void)
 	return hose;
 }
 
-#ifdef CONFIG_PPC_OF
-/*
- * Functions below are used on OpenFirmware machines.
- */
-static void
-make_one_node_map(struct device_node* node, u8 pci_bus)
-{
-	int *bus_range;
-	int len;
-
-	if (pci_bus >= pci_bus_count)
-		return;
-	bus_range = (int *) get_property(node, "bus-range", &len);
-	if (bus_range == NULL || len < 2 * sizeof(int)) {
-		printk(KERN_WARNING "Can't get bus-range for %s, "
-		       "assuming it starts at 0\n", node->full_name);
-		pci_to_OF_bus_map[pci_bus] = 0;
-	} else
-		pci_to_OF_bus_map[pci_bus] = bus_range[0];
-
-	for (node=node->child; node != 0;node = node->sibling) {
-		struct pci_dev* dev;
-		unsigned int *class_code, *reg;
-	
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
-		if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
-			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
-			continue;
-		reg = (unsigned int *)get_property(node, "reg", NULL);
-		if (!reg)
-			continue;
-		dev = pci_find_slot(pci_bus, ((reg[0] >> 8) & 0xff));
-		if (!dev || !dev->subordinate)
-			continue;
-		make_one_node_map(node, dev->subordinate->number);
-	}
-}
-	
-void
-pcibios_make_OF_bus_map(void)
-{
-	int i;
-	struct pci_controller* hose;
-	u8* of_prop_map;
-
-	pci_to_OF_bus_map = (u8*)kmalloc(pci_bus_count, GFP_KERNEL);
-	if (!pci_to_OF_bus_map) {
-		printk(KERN_ERR "Can't allocate OF bus map !\n");
-		return;
-	}
-
-	/* We fill the bus map with invalid values, that helps
-	 * debugging.
-	 */
-	for (i=0; i<pci_bus_count; i++)
-		pci_to_OF_bus_map[i] = 0xff;
-
-	/* For each hose, we begin searching bridges */
-	for(hose=hose_head; hose; hose=hose->next) {
-		struct device_node* node;	
-		node = (struct device_node *)hose->arch_data;
-		if (!node)
-			continue;
-		make_one_node_map(node, hose->first_busno);
-	}
-	of_prop_map = get_property(find_path_device("/"), "pci-OF-bus-map", NULL);
-	if (of_prop_map)
-		memcpy(of_prop_map, pci_to_OF_bus_map, pci_bus_count);
-#ifdef DEBUG
-	printk("PCI->OF bus map:\n");
-	for (i=0; i<pci_bus_count; i++) {
-		if (pci_to_OF_bus_map[i] == 0xff)
-			continue;
-		printk("%d -> %d\n", i, pci_to_OF_bus_map[i]);
-	}
-#endif
-}
-
-typedef int (*pci_OF_scan_iterator)(struct device_node* node, void* data);
-
-static struct device_node*
-scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void* data)
-{
-	struct device_node* sub_node;
-
-	for (; node != 0;node = node->sibling) {
-		unsigned int *class_code;
-	
-		if (filter(node, data))
-			return node;
-
-		/* For PCI<->PCI bridges or CardBus bridges, we go down
-		 * Note: some OFs create a parent node "multifunc-device" as
-		 * a fake root for all functions of a multi-function device,
-		 * we go down them as well.
-		 */
-		class_code = (unsigned int *) get_property(node, "class-code", NULL);
-		if ((!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
-			(*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) &&
-			strcmp(node->name, "multifunc-device"))
-			continue;
-		sub_node = scan_OF_pci_childs(node->child, filter, data);
-		if (sub_node)
-			return sub_node;
-	}
-	return NULL;
-}
-
-static int
-scan_OF_pci_childs_iterator(struct device_node* node, void* data)
-{
-	unsigned int *reg;
-	u8* fdata = (u8*)data;
-	
-	reg = (unsigned int *) get_property(node, "reg", NULL);
-	if (reg && ((reg[0] >> 8) & 0xff) == fdata[1]
-		&& ((reg[0] >> 16) & 0xff) == fdata[0])
-		return 1;
-	return 0;
-}
-
-static struct device_node*
-scan_OF_childs_for_device(struct device_node* node, u8 bus, u8 dev_fn)
-{
-	u8 filter_data[2] = {bus, dev_fn};
-
-	return scan_OF_pci_childs(node, scan_OF_pci_childs_iterator, filter_data);
-}
-
-/*
- * Scans the OF tree for a device node matching a PCI device
- */
-struct device_node *
-pci_busdev_to_OF_node(struct pci_bus *bus, int devfn)
-{
-	struct pci_controller *hose;
-	struct device_node *node;
-	int busnr;
-
-	if (!have_of)
-		return NULL;
-	
-	/* Lookup the hose */
-	busnr = bus->number;
-	hose = pci_bus_to_hose(busnr);
-	if (!hose)
-		return NULL;
-
-	/* Check it has an OF node associated */
-	node = (struct device_node *) hose->arch_data;
-	if (!node)
-		return NULL;
-
-	/* Fixup bus number according to what OF think it is. */
-	if (pci_to_OF_bus_map)
-		busnr = pci_to_OF_bus_map[busnr];
-	if (busnr == 0xff)
-		return NULL;
-	
-	/* Now, lookup childs of the hose */
-	return scan_OF_childs_for_device(node->child, busnr, devfn);
-}
-EXPORT_SYMBOL(pci_busdev_to_OF_node);
-
-struct device_node*
-pci_device_to_OF_node(struct pci_dev *dev)
-{
-	return pci_busdev_to_OF_node(dev->bus, dev->devfn);
-}
-EXPORT_SYMBOL(pci_device_to_OF_node);
-
-/* This routine is meant to be used early during boot, when the
- * PCI bus numbers have not yet been assigned, and you need to
- * issue PCI config cycles to an OF device.
- * It could also be used to "fix" RTAS config cycles if you want
- * to set pci_assign_all_buses to 1 and still use RTAS for PCI
- * config cycles.
- */
-struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
-{
-	if (!have_of)
-		return NULL;
-	while(node) {
-		struct pci_controller* hose;
-		for (hose=hose_head;hose;hose=hose->next)
-			if (hose->arch_data == node)
-				return hose;
-		node=node->parent;
-	}
-	return NULL;
-}
-
-static int
-find_OF_pci_device_filter(struct device_node* node, void* data)
-{
-	return ((void *)node == data);
-}
-
-/*
- * Returns the PCI device matching a given OF node
- */
-int
-pci_device_from_OF_node(struct device_node* node, u8* bus, u8* devfn)
-{
-	unsigned int *reg;
-	struct pci_controller* hose;
-	struct pci_dev* dev = NULL;
-	
-	if (!have_of)
-		return -ENODEV;
-	/* Make sure it's really a PCI device */
-	hose = pci_find_hose_for_OF_device(node);
-	if (!hose || !hose->arch_data)
-		return -ENODEV;
-	if (!scan_OF_pci_childs(((struct device_node*)hose->arch_data)->child,
-			find_OF_pci_device_filter, (void *)node))
-		return -ENODEV;
-	reg = (unsigned int *) get_property(node, "reg", NULL);
-	if (!reg)
-		return -ENODEV;
-	*bus = (reg[0] >> 16) & 0xff;
-	*devfn = ((reg[0] >> 8) & 0xff);
-
-	/* Ok, here we need some tweak. If we have already renumbered
-	 * all busses, we can't rely on the OF bus number any more.
-	 * the pci_to_OF_bus_map is not enough as several PCI busses
-	 * may match the same OF bus number.
-	 */
-	if (!pci_to_OF_bus_map)
-		return 0;
-
-	for_each_pci_dev(dev)
-		if (pci_to_OF_bus_map[dev->bus->number] == *bus &&
-				dev->devfn == *devfn) {
-			*bus = dev->bus->number;
-			pci_dev_put(dev);
-			return 0;
-		}
-
-	return -ENODEV;
-}
-EXPORT_SYMBOL(pci_device_from_OF_node);
-
-void __init
-pci_process_bridge_OF_ranges(struct pci_controller *hose,
-			   struct device_node *dev, int primary)
-{
-	static unsigned int static_lc_ranges[256] __initdata;
-	unsigned int *dt_ranges, *lc_ranges, *ranges, *prev;
-	unsigned int size;
-	int rlen = 0, orig_rlen;
-	int memno = 0;
-	struct resource *res;
-	int np, na = prom_n_addr_cells(dev);
-	np = na + 5;
-
-	/* First we try to merge ranges to fix a problem with some pmacs
-	 * that can have more than 3 ranges, fortunately using contiguous
-	 * addresses -- BenH
-	 */
-	dt_ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
-	if (!dt_ranges)
-		return;
-	/* Sanity check, though hopefully that never happens */
-	if (rlen > sizeof(static_lc_ranges)) {
-		printk(KERN_WARNING "OF ranges property too large !\n");
-		rlen = sizeof(static_lc_ranges);
-	}
-	lc_ranges = static_lc_ranges;
-	memcpy(lc_ranges, dt_ranges, rlen);
-	orig_rlen = rlen;
-
-	/* Let's work on a copy of the "ranges" property instead of damaging
-	 * the device-tree image in memory
-	 */
-	ranges = lc_ranges;
-	prev = NULL;
-	while ((rlen -= np * sizeof(unsigned int)) >= 0) {
-		if (prev) {
-			if (prev[0] == ranges[0] && prev[1] == ranges[1] &&
-				(prev[2] + prev[na+4]) == ranges[2] &&
-				(prev[na+2] + prev[na+4]) == ranges[na+2]) {
-				prev[na+4] += ranges[na+4];
-				ranges[0] = 0;
-				ranges += np;
-				continue;
-			}
-		}
-		prev = ranges;
-		ranges += np;
-	}
-
-	/*
-	 * The ranges property is laid out as an array of elements,
-	 * each of which comprises:
-	 *   cells 0 - 2:	a PCI address
-	 *   cells 3 or 3+4:	a CPU physical address
-	 *			(size depending on dev->n_addr_cells)
-	 *   cells 4+5 or 5+6:	the size of the range
-	 */
-	ranges = lc_ranges;
-	rlen = orig_rlen;
-	while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
-		res = NULL;
-		size = ranges[na+4];
-		switch ((ranges[0] >> 24) & 0x3) {
-		case 1:		/* I/O space */
-			if (ranges[2] != 0)
-				break;
-			hose->io_base_phys = ranges[na+2];
-			/* limit I/O space to 16MB */
-			if (size > 0x01000000)
-				size = 0x01000000;
-			hose->io_base_virt = ioremap(ranges[na+2], size);
-			if (primary)
-				isa_io_base = (unsigned long) hose->io_base_virt;
-			res = &hose->io_resource;
-			res->flags = IORESOURCE_IO;
-			res->start = ranges[2];
-			DBG("PCI: IO 0x%lx -> 0x%lx\n",
-				    res->start, res->start + size - 1);
-			break;
-		case 2:		/* memory space */
-			memno = 0;
-			if (ranges[1] == 0 && ranges[2] == 0
-			    && ranges[na+4] <= (16 << 20)) {
-				/* 1st 16MB, i.e. ISA memory area */
-				if (primary)
-					isa_mem_base = ranges[na+2];
-				memno = 1;
-			}
-			while (memno < 3 && hose->mem_resources[memno].flags)
-				++memno;
-			if (memno == 0)
-				hose->pci_mem_offset = ranges[na+2] - ranges[2];
-			if (memno < 3) {
-				res = &hose->mem_resources[memno];
-				res->flags = IORESOURCE_MEM;
-				if(ranges[0] & 0x40000000)
-					res->flags |= IORESOURCE_PREFETCH;
-				res->start = ranges[na+2];
-				DBG("PCI: MEM[%d] 0x%lx -> 0x%lx\n", memno,
-					    res->start, res->start + size - 1);
-			}
-			break;
-		}
-		if (res != NULL) {
-			res->name = dev->full_name;
-			res->end = res->start + size - 1;
-			res->parent = NULL;
-			res->sibling = NULL;
-			res->child = NULL;
-		}
-		ranges += np;
-	}
-}
-
-/* We create the "pci-OF-bus-map" property now so it appears in the
- * /proc device tree
- */
-void __init
-pci_create_OF_bus_map(void)
-{
-	struct property* of_prop;
-	
-	of_prop = (struct property*) alloc_bootmem(sizeof(struct property) + 256);
-	if (of_prop && find_path_device("/")) {
-		memset(of_prop, -1, sizeof(struct property) + 256);
-		of_prop->name = "pci-OF-bus-map";
-		of_prop->length = 256;
-		of_prop->value = (unsigned char *)&of_prop[1];
-		prom_add_property(find_path_device("/"), of_prop);
-	}
-}
-
-static ssize_t pci_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct pci_dev *pdev;
-	struct device_node *np;
-
-	pdev = to_pci_dev (dev);
-	np = pci_device_to_OF_node(pdev);
-	if (np == NULL || np->full_name == NULL)
-		return 0;
-	return sprintf(buf, "%s", np->full_name);
-}
-static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
-
-#else /* CONFIG_PPC_OF */
 void pcibios_make_OF_bus_map(void)
 {
 }
-#endif /* CONFIG_PPC_OF */
 
 /* Add sysfs properties */
 void pcibios_add_platform_entries(struct pci_dev *pdev)
 {
-#ifdef CONFIG_PPC_OF
-	device_create_file(&pdev->dev, &dev_attr_devspec);
-#endif /* CONFIG_PPC_OF */
 }
 
 
diff --git a/arch/ppc/kernel/ppc_htab.c b/arch/ppc/kernel/ppc_htab.c
index 2f5c7650274..eabac6cad1f 100644
--- a/arch/ppc/kernel/ppc_htab.c
+++ b/arch/ppc/kernel/ppc_htab.c
@@ -104,7 +104,7 @@ static char *pmc2_lookup(unsigned long mmcr0)
 static int ppc_htab_show(struct seq_file *m, void *v)
 {
 	unsigned long mmcr0 = 0, pmc1 = 0, pmc2 = 0;
-#if defined(CONFIG_PPC_STD_MMU) && !defined(CONFIG_PPC64BRIDGE)
+#if defined(CONFIG_PPC_STD_MMU)
 	unsigned int kptes = 0, uptes = 0;
 	PTE *ptr;
 #endif /* CONFIG_PPC_STD_MMU */
@@ -133,7 +133,6 @@ static int ppc_htab_show(struct seq_file *m, void *v)
 		return 0;
 	}
 
-#ifndef CONFIG_PPC64BRIDGE
 	for (ptr = Hash; ptr < Hash_end; ptr++) {
 		unsigned int mctx, vsid;
 
@@ -147,7 +146,6 @@ static int ppc_htab_show(struct seq_file *m, void *v)
 		else
 			uptes++;
 	}
-#endif
 
 	seq_printf(m,
 		      "PTE Hash Table Information\n"
@@ -155,20 +153,16 @@ static int ppc_htab_show(struct seq_file *m, void *v)
 		      "Buckets\t\t: %lu\n"
  		      "Address\t\t: %08lx\n"
 		      "Entries\t\t: %lu\n"
-#ifndef CONFIG_PPC64BRIDGE
 		      "User ptes\t: %u\n"
 		      "Kernel ptes\t: %u\n"
 		      "Percent full\t: %lu%%\n"
-#endif
                       , (unsigned long)(Hash_size>>10),
 		      (Hash_size/(sizeof(PTE)*8)),
 		      (unsigned long)Hash,
 		      Hash_size/sizeof(PTE)
-#ifndef CONFIG_PPC64BRIDGE
                       , uptes,
 		      kptes,
 		      ((kptes+uptes)*100) / (Hash_size/sizeof(PTE))
-#endif
 		);
 
 	seq_printf(m,
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 683e028000e..865ba74991a 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -29,7 +29,6 @@
 #include <linux/adb.h>
 #include <linux/cuda.h>
 #include <linux/pmu.h>
-#include <asm/prom.h>
 #include <asm/system.h>
 #include <asm/pci-bridge.h>
 #include <asm/irq.h>
@@ -207,27 +206,6 @@ EXPORT_SYMBOL(adb_try_handler_change);
 EXPORT_SYMBOL(cuda_request);
 EXPORT_SYMBOL(cuda_poll);
 #endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_PPC_OF
-EXPORT_SYMBOL(find_devices);
-EXPORT_SYMBOL(find_type_devices);
-EXPORT_SYMBOL(find_compatible_devices);
-EXPORT_SYMBOL(find_path_device);
-EXPORT_SYMBOL(device_is_compatible);
-EXPORT_SYMBOL(machine_is_compatible);
-EXPORT_SYMBOL(find_all_nodes);
-EXPORT_SYMBOL(get_property);
-EXPORT_SYMBOL(request_OF_resource);
-EXPORT_SYMBOL(release_OF_resource);
-EXPORT_SYMBOL(of_find_node_by_name);
-EXPORT_SYMBOL(of_find_node_by_type);
-EXPORT_SYMBOL(of_find_compatible_node);
-EXPORT_SYMBOL(of_find_node_by_path);
-EXPORT_SYMBOL(of_find_all_nodes);
-EXPORT_SYMBOL(of_get_parent);
-EXPORT_SYMBOL(of_get_next_child);
-EXPORT_SYMBOL(of_node_get);
-EXPORT_SYMBOL(of_node_put);
-#endif /* CONFIG_PPC_OF */
 #if defined(CONFIG_BOOTX_TEXT)
 EXPORT_SYMBOL(btext_update_display);
 #endif
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index 53e9deacee8..7eb91a2e818 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -1,5 +1,5 @@
 /*
- * Common prep/chrp boot and setup code.
+ * Common prep boot and setup code.
  */
 
 #include <linux/config.h>
@@ -72,17 +72,12 @@ unsigned long ISA_DMA_THRESHOLD;
 unsigned int DMA_MODE_READ;
 unsigned int DMA_MODE_WRITE;
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
-int _machine = 0;
-EXPORT_SYMBOL(_machine);
-
+#ifdef CONFIG_PPC_PREP
 extern void prep_init(unsigned long r3, unsigned long r4,
 		unsigned long r5, unsigned long r6, unsigned long r7);
-extern void chrp_init(unsigned long r3, unsigned long r4,
-		unsigned long r5, unsigned long r6, unsigned long r7);
 
 dev_t boot_dev;
-#endif /* CONFIG_PPC_MULTIPLATFORM */
+#endif /* CONFIG_PPC_PREP */
 
 int have_of;
 EXPORT_SYMBOL(have_of);
@@ -319,72 +314,12 @@ early_init(int r3, int r4, int r5)
 	identify_cpu(offset, 0);
 	do_cpu_ftr_fixups(offset);
 
-#if defined(CONFIG_PPC_OF)
-	reloc_got2(offset);
-
-	/*
-	 * don't do anything on prep
-	 * for now, don't use bootinfo because it breaks yaboot 0.5
-	 * and assume that if we didn't find a magic number, we have OF
-	 */
-	if (*(unsigned long *)(0) != 0xdeadc0de)
-		phys = prom_init(r3, r4, (prom_entry)r5);
-
-	reloc_got2(-offset);
-#endif
-
 	return phys;
 }
 
-#ifdef CONFIG_PPC_OF
-/*
- * Assume here that all clock rates are the same in a
- * smp system.  -- Cort
- */
-int
-of_show_percpuinfo(struct seq_file *m, int i)
-{
-	struct device_node *cpu_node;
-	u32 *fp;
-	int s;
-	
-	cpu_node = find_type_devices("cpu");
-	if (!cpu_node)
-		return 0;
-	for (s = 0; s < i && cpu_node->next; s++)
-		cpu_node = cpu_node->next;
-	fp = (u32 *)get_property(cpu_node, "clock-frequency", NULL);
-	if (fp)
-		seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
-	return 0;
-}
-
-void __init
-intuit_machine_type(void)
-{
-	char *model;
-	struct device_node *root;
-	
-	/* ask the OF info if we're a chrp or pmac */
-	root = find_path_device("/");
-	if (root != 0) {
-		/* assume pmac unless proven to be chrp -- Cort */
-		_machine = _MACH_Pmac;
-		model = get_property(root, "device_type", NULL);
-		if (model && !strncmp("chrp", model, 4))
-			_machine = _MACH_chrp;
-		else {
-			model = get_property(root, "model", NULL);
-			if (model && !strncmp(model, "IBM", 3))
-				_machine = _MACH_chrp;
-		}
-	}
-}
-#endif
-
-#ifdef CONFIG_PPC_MULTIPLATFORM
+#ifdef CONFIG_PPC_PREP
 /*
- * The PPC_MULTIPLATFORM version of platform_init...
+ * The PPC_PREP version of platform_init...
  */
 void __init
 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
@@ -399,161 +334,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 
 	parse_bootinfo(find_bootinfo());
 
-	/* if we didn't get any bootinfo telling us what we are... */
-	if (_machine == 0) {
-		/* prep boot loader tells us if we're prep or not */
-		if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
-			_machine = _MACH_prep;
-	}
-
-#ifdef CONFIG_PPC_PREP
-	/* not much more to do here, if prep */
-	if (_machine == _MACH_prep) {
-		prep_init(r3, r4, r5, r6, r7);
-		return;
-	}
-#endif
-
-#ifdef CONFIG_PPC_OF
-	have_of = 1;
-
-	/* prom_init has already been called from __start */
-	if (boot_infos)
-		relocate_nodes();
-
-	/* If we aren't PReP, we can find out if we're Pmac
-	 * or CHRP with this. */
-	if (_machine == 0)
-		intuit_machine_type();
-
-	/* finish_device_tree may need _machine defined. */
-	finish_device_tree();
-
-	/*
-	 * If we were booted via quik, r3 points to the physical
-	 * address of the command-line parameters.
-	 * If we were booted from an xcoff image (i.e. netbooted or
-	 * booted from floppy), we get the command line from the
-	 * bootargs property of the /chosen node.
-	 * If an initial ramdisk is present, r3 and r4
-	 * are used for initrd_start and initrd_size,
-	 * otherwise they contain 0xdeadbeef.
-	 */
-	if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
-		strlcpy(cmd_line, (char *)r3 + KERNELBASE,
-			sizeof(cmd_line));
-	} else if (boot_infos != 0) {
-		/* booted by BootX - check for ramdisk */
-		if (boot_infos->kernelParamsOffset != 0)
-			strlcpy(cmd_line, (char *) boot_infos
-				+ boot_infos->kernelParamsOffset,
-				sizeof(cmd_line));
-#ifdef CONFIG_BLK_DEV_INITRD
-		if (boot_infos->ramDisk) {
-			initrd_start = (unsigned long) boot_infos
-				+ boot_infos->ramDisk;
-			initrd_end = initrd_start + boot_infos->ramDiskSize;
-			initrd_below_start_ok = 1;
-		}
-#endif
-	} else {
-		struct device_node *chosen;
-		char *p;
-	
-#ifdef CONFIG_BLK_DEV_INITRD
-		if (r3 && r4 && r4 != 0xdeadbeef) {
-			if (r3 < KERNELBASE)
-				r3 += KERNELBASE;
-			initrd_start = r3;
-			initrd_end = r3 + r4;
-			ROOT_DEV = Root_RAM0;
-			initrd_below_start_ok = 1;
-		}
-#endif
-		chosen = find_devices("chosen");
-		if (chosen != NULL) {
-			p = get_property(chosen, "bootargs", NULL);
-			if (p && *p) {
-				strlcpy(cmd_line, p, sizeof(cmd_line));
-			}
-		}
-	}
-#ifdef CONFIG_ADB
-	if (strstr(cmd_line, "adb_sync")) {
-		extern int __adb_probe_sync;
-		__adb_probe_sync = 1;
-	}
-#endif /* CONFIG_ADB */
-
-	switch (_machine) {
-#ifdef CONFIG_PPC_CHRP
-	case _MACH_chrp:
-		chrp_init(r3, r4, r5, r6, r7);
-		break;
-#endif
-	}
-#endif /* CONFIG_PPC_OF */
+	prep_init(r3, r4, r5, r6, r7);
 }
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
-#ifdef CONFIG_PPC_OF
-#ifdef CONFIG_SERIAL_CORE_CONSOLE
-extern char *of_stdout_device;
-
-static int __init set_preferred_console(void)
-{
-	struct device_node *prom_stdout;
-	char *name;
-	int offset = 0;
-
-	if (of_stdout_device == NULL)
-		return -ENODEV;
-
-	/* The user has requested a console so this is already set up. */
-	if (strstr(saved_command_line, "console="))
-		return -EBUSY;
-
-	prom_stdout = find_path_device(of_stdout_device);
-	if (!prom_stdout)
-		return -ENODEV;
-
-	name = (char *)get_property(prom_stdout, "name", NULL);
-	if (!name)
-		return -ENODEV;
-
-	if (strcmp(name, "serial") == 0) {
-		int i;
-		u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
-		if (i > 8) {
-			switch (reg[1]) {
-				case 0x3f8:
-					offset = 0;
-					break;
-				case 0x2f8:
-					offset = 1;
-					break;
-				case 0x898:
-					offset = 2;
-					break;
-				case 0x890:
-					offset = 3;
-					break;
-				default:
-					/* We dont recognise the serial port */
-					return -ENODEV;
-			}
-		}
-	} else if (strcmp(name, "ch-a") == 0)
-		offset = 0;
-	else if (strcmp(name, "ch-b") == 0)
-		offset = 1;
-	else
-		return -ENODEV;
-	return add_preferred_console("ttyS", offset, NULL);
-}
-console_initcall(set_preferred_console);
-#endif /* CONFIG_SERIAL_CORE_CONSOLE */
-#endif /* CONFIG_PPC_OF */
+#endif /* CONFIG_PPC_PREP */
 
 struct bi_record *find_bootinfo(void)
 {
@@ -589,23 +372,6 @@ void parse_bootinfo(struct bi_record *rec)
 			initrd_end = data[0] + data[1] + KERNELBASE;
 			break;
 #endif /* CONFIG_BLK_DEV_INITRD */
-#ifdef CONFIG_PPC_MULTIPLATFORM
-		case BI_MACHTYPE:
-			/* Machine types changed with the merge. Since the
-			 * bootinfo are now deprecated, we can just hard code
-			 * the appropriate conversion here for when we are
-			 * called with yaboot which passes us a machine type
-			 * this way.
-			 */
-			switch(data[0]) {
-			case 1: _machine = _MACH_prep; break;
-			case 2: _machine = _MACH_Pmac; break;
-			case 4: _machine = _MACH_chrp; break;
-			default:
-				_machine = data[0];
-			}
-			break;
-#endif
 		case BI_MEMSIZE:
 			boot_mem_size = data[0];
 			break;
@@ -631,9 +397,6 @@ machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #ifdef CONFIG_6xx
 	ppc_md.power_save = ppc6xx_idle;
 #endif
-#ifdef CONFIG_POWER4
-	ppc_md.power_save = power4_idle;
-#endif
 
 	platform_init(r3, r4, r5, r6, r7);
 
@@ -799,7 +562,4 @@ void __init setup_arch(char **cmdline_p)
 	if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
 
 	paging_init();
-
-	/* this is for modules since _machine can be a define -- Cort */
-	ppc_md.ppc_machine = _machine;
 }