| /* | 
 |  *  linux/arch/arm/mm/proc-xscale.S | 
 |  * | 
 |  *  Author:	Nicolas Pitre | 
 |  *  Created:	November 2000 | 
 |  *  Copyright:	(C) 2000, 2001 MontaVista Software Inc. | 
 |  * | 
 |  * This program is free software; you can redistribute it and/or modify | 
 |  * it under the terms of the GNU General Public License version 2 as | 
 |  * published by the Free Software Foundation. | 
 |  * | 
 |  * MMU functions for the Intel XScale CPUs | 
 |  * | 
 |  * 2001 Aug 21: | 
 |  *	some contributions by Brett Gaines <brett.w.gaines@intel.com> | 
 |  *	Copyright 2001 by Intel Corp. | 
 |  * | 
 |  * 2001 Sep 08: | 
 |  *	Completely revisited, many important fixes | 
 |  *	Nicolas Pitre <nico@cam.org> | 
 |  */ | 
 |  | 
 | #include <linux/linkage.h> | 
 | #include <linux/init.h> | 
 | #include <asm/assembler.h> | 
 | #include <asm/procinfo.h> | 
 | #include <asm/pgtable.h> | 
 | #include <asm/pgtable-hwdef.h> | 
 | #include <asm/page.h> | 
 | #include <asm/ptrace.h> | 
 | #include "proc-macros.S" | 
 |  | 
 | /* | 
 |  * This is the maximum size of an area which will be flushed.  If the area | 
 |  * is larger than this, then we flush the whole cache | 
 |  */ | 
 | #define MAX_AREA_SIZE	32768 | 
 |  | 
 | /* | 
 |  * the cache line size of the I and D cache | 
 |  */ | 
 | #define CACHELINESIZE	32 | 
 |  | 
 | /* | 
 |  * the size of the data cache | 
 |  */ | 
 | #define CACHESIZE	32768 | 
 |  | 
 | /* | 
 |  * Virtual address used to allocate the cache when flushed | 
 |  * | 
 |  * This must be an address range which is _never_ used.  It should | 
 |  * apparently have a mapping in the corresponding page table for | 
 |  * compatibility with future CPUs that _could_ require it.  For instance we | 
 |  * don't care. | 
 |  * | 
 |  * This must be aligned on a 2*CACHESIZE boundary.  The code selects one of | 
 |  * the 2 areas in alternance each time the clean_d_cache macro is used. | 
 |  * Without this the XScale core exhibits cache eviction problems and no one | 
 |  * knows why. | 
 |  * | 
 |  * Reminder: the vector table is located at 0xffff0000-0xffff0fff. | 
 |  */ | 
 | #define CLEAN_ADDR	0xfffe0000 | 
 |  | 
 | /* | 
 |  * This macro is used to wait for a CP15 write and is needed | 
 |  * when we have to ensure that the last operation to the co-pro | 
 |  * was completed before continuing with operation. | 
 |  */ | 
 | 	.macro	cpwait, rd | 
 | 	mrc	p15, 0, \rd, c2, c0, 0		@ arbitrary read of cp15 | 
 | 	mov	\rd, \rd			@ wait for completion | 
 | 	sub 	pc, pc, #4			@ flush instruction pipeline | 
 | 	.endm | 
 |  | 
 | 	.macro	cpwait_ret, lr, rd | 
 | 	mrc	p15, 0, \rd, c2, c0, 0		@ arbitrary read of cp15 | 
 | 	sub	pc, \lr, \rd, LSR #32		@ wait for completion and | 
 | 						@ flush instruction pipeline | 
 | 	.endm | 
 |  | 
 | /* | 
 |  * This macro cleans the entire dcache using line allocate. | 
 |  * The main loop has been unrolled to reduce loop overhead. | 
 |  * rd and rs are two scratch registers. | 
 |  */ | 
 | 	.macro  clean_d_cache, rd, rs | 
 | 	ldr	\rs, =clean_addr | 
 | 	ldr	\rd, [\rs] | 
 | 	eor	\rd, \rd, #CACHESIZE | 
 | 	str	\rd, [\rs] | 
 | 	add	\rs, \rd, #CACHESIZE | 
 | 1:	mcr	p15, 0, \rd, c7, c2, 5		@ allocate D cache line | 
 | 	add	\rd, \rd, #CACHELINESIZE | 
 | 	mcr	p15, 0, \rd, c7, c2, 5		@ allocate D cache line | 
 | 	add	\rd, \rd, #CACHELINESIZE | 
 | 	mcr	p15, 0, \rd, c7, c2, 5		@ allocate D cache line | 
 | 	add	\rd, \rd, #CACHELINESIZE | 
 | 	mcr	p15, 0, \rd, c7, c2, 5		@ allocate D cache line | 
 | 	add	\rd, \rd, #CACHELINESIZE | 
 | 	teq	\rd, \rs | 
 | 	bne	1b | 
 | 	.endm | 
 |  | 
 | 	.data | 
 | clean_addr:	.word	CLEAN_ADDR | 
 |  | 
 | 	.text | 
 |  | 
 | /* | 
 |  * cpu_xscale_proc_init() | 
 |  * | 
 |  * Nothing too exciting at the moment | 
 |  */ | 
 | ENTRY(cpu_xscale_proc_init) | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  * cpu_xscale_proc_fin() | 
 |  */ | 
 | ENTRY(cpu_xscale_proc_fin) | 
 | 	str	lr, [sp, #-4]! | 
 | 	mov	r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE | 
 | 	msr	cpsr_c, r0 | 
 | 	bl	xscale_flush_kern_cache_all	@ clean caches | 
 | 	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register | 
 | 	bic	r0, r0, #0x1800			@ ...IZ........... | 
 | 	bic	r0, r0, #0x0006			@ .............CA. | 
 | 	mcr	p15, 0, r0, c1, c0, 0		@ disable caches | 
 | 	ldr	pc, [sp], #4 | 
 |  | 
 | /* | 
 |  * cpu_xscale_reset(loc) | 
 |  * | 
 |  * Perform a soft reset of the system.  Put the CPU into the | 
 |  * same state as it would be if it had been reset, and branch | 
 |  * to what would be the reset vector. | 
 |  * | 
 |  * loc: location to jump to for soft reset | 
 |  * | 
 |  * Beware PXA270 erratum E7. | 
 |  */ | 
 | 	.align	5 | 
 | ENTRY(cpu_xscale_reset) | 
 | 	mov	r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE | 
 | 	msr	cpsr_c, r1			@ reset CPSR | 
 | 	mcr	p15, 0, r1, c10, c4, 1		@ unlock I-TLB | 
 | 	mcr	p15, 0, r1, c8, c5, 0		@ invalidate I-TLB | 
 | 	mrc	p15, 0, r1, c1, c0, 0		@ ctrl register | 
 | 	bic	r1, r1, #0x0086			@ ........B....CA. | 
 | 	bic	r1, r1, #0x3900			@ ..VIZ..S........ | 
 | 	sub	pc, pc, #4			@ flush pipeline | 
 | 	@ *** cache line aligned *** | 
 | 	mcr	p15, 0, r1, c1, c0, 0		@ ctrl register | 
 | 	bic	r1, r1, #0x0001			@ ...............M | 
 | 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches & BTB | 
 | 	mcr	p15, 0, r1, c1, c0, 0		@ ctrl register | 
 | 	@ CAUTION: MMU turned off from this point. We count on the pipeline | 
 | 	@ already containing those two last instructions to survive. | 
 | 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs | 
 | 	mov	pc, r0 | 
 |  | 
 | /* | 
 |  * cpu_xscale_do_idle() | 
 |  * | 
 |  * Cause the processor to idle | 
 |  * | 
 |  * For now we do nothing but go to idle mode for every case | 
 |  * | 
 |  * XScale supports clock switching, but using idle mode support | 
 |  * allows external hardware to react to system state changes. | 
 |  */ | 
 | 	.align	5 | 
 |  | 
 | ENTRY(cpu_xscale_do_idle) | 
 | 	mov	r0, #1 | 
 | 	mcr	p14, 0, r0, c7, c0, 0		@ Go to IDLE | 
 | 	mov	pc, lr | 
 |  | 
 | /* ================================= CACHE ================================ */ | 
 |  | 
 | /* | 
 |  *	flush_user_cache_all() | 
 |  * | 
 |  *	Invalidate all cache entries in a particular address | 
 |  *	space. | 
 |  */ | 
 | ENTRY(xscale_flush_user_cache_all) | 
 | 	/* FALLTHROUGH */ | 
 |  | 
 | /* | 
 |  *	flush_kern_cache_all() | 
 |  * | 
 |  *	Clean and invalidate the entire cache. | 
 |  */ | 
 | ENTRY(xscale_flush_kern_cache_all) | 
 | 	mov	r2, #VM_EXEC | 
 | 	mov	ip, #0 | 
 | __flush_whole_cache: | 
 | 	clean_d_cache r0, r1 | 
 | 	tst	r2, #VM_EXEC | 
 | 	mcrne	p15, 0, ip, c7, c5, 0		@ Invalidate I cache & BTB | 
 | 	mcrne	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	flush_user_cache_range(start, end, vm_flags) | 
 |  * | 
 |  *	Invalidate a range of cache entries in the specified | 
 |  *	address space. | 
 |  * | 
 |  *	- start - start address (may not be aligned) | 
 |  *	- end	- end address (exclusive, may not be aligned) | 
 |  *	- vma	- vma_area_struct describing address space | 
 |  */ | 
 | 	.align	5 | 
 | ENTRY(xscale_flush_user_cache_range) | 
 | 	mov	ip, #0 | 
 | 	sub	r3, r1, r0			@ calculate total size | 
 | 	cmp	r3, #MAX_AREA_SIZE | 
 | 	bhs	__flush_whole_cache | 
 |  | 
 | 1:	tst	r2, #VM_EXEC | 
 | 	mcrne	p15, 0, r0, c7, c5, 1		@ Invalidate I cache line | 
 | 	mcr	p15, 0, r0, c7, c10, 1		@ Clean D cache line | 
 | 	mcr	p15, 0, r0, c7, c6, 1		@ Invalidate D cache line | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	tst	r2, #VM_EXEC | 
 | 	mcrne	p15, 0, ip, c7, c5, 6		@ Invalidate BTB | 
 | 	mcrne	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	coherent_kern_range(start, end) | 
 |  * | 
 |  *	Ensure coherency between the Icache and the Dcache in the | 
 |  *	region described by start.  If you have non-snooping | 
 |  *	Harvard caches, you need to implement this function. | 
 |  * | 
 |  *	- start  - virtual start address | 
 |  *	- end	 - virtual end address | 
 |  * | 
 |  *	Note: single I-cache line invalidation isn't used here since | 
 |  *	it also trashes the mini I-cache used by JTAG debuggers. | 
 |  */ | 
 | ENTRY(xscale_coherent_kern_range) | 
 | 	bic	r0, r0, #CACHELINESIZE - 1 | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mov	r0, #0 | 
 | 	mcr	p15, 0, r0, c7, c5, 0		@ Invalidate I cache & BTB | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	coherent_user_range(start, end) | 
 |  * | 
 |  *	Ensure coherency between the Icache and the Dcache in the | 
 |  *	region described by start.  If you have non-snooping | 
 |  *	Harvard caches, you need to implement this function. | 
 |  * | 
 |  *	- start  - virtual start address | 
 |  *	- end	 - virtual end address | 
 |  */ | 
 | ENTRY(xscale_coherent_user_range) | 
 | 	bic	r0, r0, #CACHELINESIZE - 1 | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	mcr	p15, 0, r0, c7, c5, 1		@ Invalidate I cache entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mov	r0, #0 | 
 | 	mcr	p15, 0, r0, c7, c5, 6		@ Invalidate BTB | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	flush_kern_dcache_page(void *page) | 
 |  * | 
 |  *	Ensure no D cache aliasing occurs, either with itself or | 
 |  *	the I cache | 
 |  * | 
 |  *	- addr	- page aligned address | 
 |  */ | 
 | ENTRY(xscale_flush_kern_dcache_page) | 
 | 	add	r1, r0, #PAGE_SZ | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mov	r0, #0 | 
 | 	mcr	p15, 0, r0, c7, c5, 0		@ Invalidate I cache & BTB | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	dma_inv_range(start, end) | 
 |  * | 
 |  *	Invalidate (discard) the specified virtual address range. | 
 |  *	May not write back any entries.  If 'start' or 'end' | 
 |  *	are not cache line aligned, those lines must be written | 
 |  *	back. | 
 |  * | 
 |  *	- start  - virtual start address | 
 |  *	- end	 - virtual end address | 
 |  */ | 
 | ENTRY(xscale_dma_inv_range) | 
 | 	mrc	p15, 0, r2, c0, c0, 0		@ read ID | 
 | 	eor	r2, r2, #0x69000000 | 
 | 	eor	r2, r2, #0x00052000 | 
 | 	bics	r2, r2, #1 | 
 | 	beq	xscale_dma_flush_range | 
 |  | 
 | 	tst	r0, #CACHELINESIZE - 1 | 
 | 	bic	r0, r0, #CACHELINESIZE - 1 | 
 | 	mcrne	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	tst	r1, #CACHELINESIZE - 1 | 
 | 	mcrne	p15, 0, r1, c7, c10, 1		@ clean D entry | 
 | 1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	dma_clean_range(start, end) | 
 |  * | 
 |  *	Clean the specified virtual address range. | 
 |  * | 
 |  *	- start  - virtual start address | 
 |  *	- end	 - virtual end address | 
 |  */ | 
 | ENTRY(xscale_dma_clean_range) | 
 | 	bic	r0, r0, #CACHELINESIZE - 1 | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | /* | 
 |  *	dma_flush_range(start, end) | 
 |  * | 
 |  *	Clean and invalidate the specified virtual address range. | 
 |  * | 
 |  *	- start  - virtual start address | 
 |  *	- end	 - virtual end address | 
 |  */ | 
 | ENTRY(xscale_dma_flush_range) | 
 | 	bic	r0, r0, #CACHELINESIZE - 1 | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	cmp	r0, r1 | 
 | 	blo	1b | 
 | 	mcr	p15, 0, r0, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 | ENTRY(xscale_cache_fns) | 
 | 	.long	xscale_flush_kern_cache_all | 
 | 	.long	xscale_flush_user_cache_all | 
 | 	.long	xscale_flush_user_cache_range | 
 | 	.long	xscale_coherent_kern_range | 
 | 	.long	xscale_coherent_user_range | 
 | 	.long	xscale_flush_kern_dcache_page | 
 | 	.long	xscale_dma_inv_range | 
 | 	.long	xscale_dma_clean_range | 
 | 	.long	xscale_dma_flush_range | 
 |  | 
 | ENTRY(cpu_xscale_dcache_clean_area) | 
 | 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry | 
 | 	add	r0, r0, #CACHELINESIZE | 
 | 	subs	r1, r1, #CACHELINESIZE | 
 | 	bhi	1b | 
 | 	mov	pc, lr | 
 |  | 
 | /* =============================== PageTable ============================== */ | 
 |  | 
 | #define PTE_CACHE_WRITE_ALLOCATE 0 | 
 |  | 
 | /* | 
 |  * cpu_xscale_switch_mm(pgd) | 
 |  * | 
 |  * Set the translation base pointer to be as described by pgd. | 
 |  * | 
 |  * pgd: new page tables | 
 |  */ | 
 | 	.align	5 | 
 | ENTRY(cpu_xscale_switch_mm) | 
 | 	clean_d_cache r1, r2 | 
 | 	mcr	p15, 0, ip, c7, c5, 0		@ Invalidate I cache & BTB | 
 | 	mcr	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mcr	p15, 0, r0, c2, c0, 0		@ load page table pointer | 
 | 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs | 
 | 	cpwait_ret lr, ip | 
 |  | 
 | /* | 
 |  * cpu_xscale_set_pte(ptep, pte) | 
 |  * | 
 |  * Set a PTE and flush it out | 
 |  * | 
 |  * Errata 40: must set memory to write-through for user read-only pages. | 
 |  */ | 
 | 	.align	5 | 
 | ENTRY(cpu_xscale_set_pte) | 
 | 	str	r1, [r0], #-2048		@ linux version | 
 |  | 
 | 	bic	r2, r1, #0xff0 | 
 | 	orr	r2, r2, #PTE_TYPE_EXT		@ extended page | 
 |  | 
 | 	eor	r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY | 
 |  | 
 | 	tst	r3, #L_PTE_USER			@ User? | 
 | 	orrne	r2, r2, #PTE_EXT_AP_URO_SRW	@ yes -> user r/o, system r/w | 
 |  | 
 | 	tst	r3, #L_PTE_WRITE | L_PTE_DIRTY	@ Write and Dirty? | 
 | 	orreq	r2, r2, #PTE_EXT_AP_UNO_SRW	@ yes -> user n/a, system r/w | 
 | 						@ combined with user -> user r/w | 
 |  | 
 | 	@ | 
 | 	@ Handle the X bit.  We want to set this bit for the minicache | 
 | 	@ (U = E = B = W = 0, C = 1) or when write allocate is enabled, | 
 | 	@ and we have a writeable, cacheable region.  If we ignore the | 
 | 	@ U and E bits, we can allow user space to use the minicache as | 
 | 	@ well. | 
 | 	@ | 
 | 	@  X = (C & ~W & ~B) | (C & W & B & write_allocate) | 
 | 	@ | 
 | 	eor	ip, r1, #L_PTE_CACHEABLE | 
 | 	tst	ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE | 
 | #if PTE_CACHE_WRITE_ALLOCATE | 
 | 	eorne	ip, r1, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE | 
 | 	tstne	ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE | 
 | #endif | 
 | 	orreq	r2, r2, #PTE_EXT_TEX(1) | 
 |  | 
 | 	@ | 
 | 	@ Erratum 40: The B bit must be cleared for a user read-only | 
 | 	@ cacheable page. | 
 | 	@ | 
 | 	@  B = B & ~(U & C & ~W) | 
 | 	@ | 
 | 	and	ip, r1, #L_PTE_USER | L_PTE_WRITE | L_PTE_CACHEABLE | 
 | 	teq	ip, #L_PTE_USER | L_PTE_CACHEABLE | 
 | 	biceq	r2, r2, #PTE_BUFFERABLE | 
 |  | 
 | 	tst	r3, #L_PTE_PRESENT | L_PTE_YOUNG	@ Present and Young? | 
 | 	movne	r2, #0				@ no -> fault | 
 |  | 
 | 	str	r2, [r0]			@ hardware version | 
 | 	mov	ip, #0 | 
 | 	mcr	p15, 0, r0, c7, c10, 1		@ Clean D cache line | 
 | 	mcr	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mov	pc, lr | 
 |  | 
 |  | 
 | 	.ltorg | 
 |  | 
 | 	.align | 
 |  | 
 | 	__INIT | 
 |  | 
 | 	.type	__xscale_setup, #function | 
 | __xscale_setup: | 
 | 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I, D caches & BTB | 
 | 	mcr	p15, 0, ip, c7, c10, 4		@ Drain Write (& Fill) Buffer | 
 | 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I, D TLBs | 
 | #ifdef CONFIG_IWMMXT | 
 | 	mov	r0, #0				@ initially disallow access to CP0/CP1 | 
 | #else | 
 | 	mov	r0, #1				@ Allow access to CP0 | 
 | #endif | 
 | 	orr     r0, r0, #1 << 6			@ cp6 for IOP3xx and Bulverde | 
 | 	orr	r0, r0, #1 << 13		@ Its undefined whether this | 
 | 	mcr	p15, 0, r0, c15, c1, 0		@ affects USR or SVC modes | 
 |  | 
 | 	adr	r5, xscale_crval | 
 | 	ldmia	r5, {r5, r6} | 
 | 	mrc	p15, 0, r0, c1, c0, 0		@ get control register | 
 | 	bic	r0, r0, r5 | 
 | 	orr	r0, r0, r6 | 
 | 	mov	pc, lr | 
 | 	.size	__xscale_setup, . - __xscale_setup | 
 |  | 
 | 	/* | 
 | 	 *  R | 
 | 	 * .RVI ZFRS BLDP WCAM | 
 | 	 * ..11 1.01 .... .101 | 
 | 	 *  | 
 | 	 */ | 
 | 	.type	xscale_crval, #object | 
 | xscale_crval: | 
 | 	crval	clear=0x00003b07, mmuset=0x00003905, ucset=0x00001900 | 
 |  | 
 | 	__INITDATA | 
 |  | 
 | /* | 
 |  * Purpose : Function pointers used to access above functions - all calls | 
 |  *	     come through these | 
 |  */ | 
 |  | 
 | 	.type	xscale_processor_functions, #object | 
 | ENTRY(xscale_processor_functions) | 
 | 	.word	v5t_early_abort | 
 | 	.word	cpu_xscale_proc_init | 
 | 	.word	cpu_xscale_proc_fin | 
 | 	.word	cpu_xscale_reset | 
 | 	.word	cpu_xscale_do_idle | 
 | 	.word	cpu_xscale_dcache_clean_area | 
 | 	.word	cpu_xscale_switch_mm | 
 | 	.word	cpu_xscale_set_pte | 
 | 	.size	xscale_processor_functions, . - xscale_processor_functions | 
 |  | 
 | 	.section ".rodata" | 
 |  | 
 | 	.type	cpu_arch_name, #object | 
 | cpu_arch_name: | 
 | 	.asciz	"armv5te" | 
 | 	.size	cpu_arch_name, . - cpu_arch_name | 
 |  | 
 | 	.type	cpu_elf_name, #object | 
 | cpu_elf_name: | 
 | 	.asciz	"v5" | 
 | 	.size	cpu_elf_name, . - cpu_elf_name | 
 |  | 
 | 	.type	cpu_80200_name, #object | 
 | cpu_80200_name: | 
 | 	.asciz	"XScale-80200" | 
 | 	.size	cpu_80200_name, . - cpu_80200_name | 
 |  | 
 | 	.type	cpu_80219_name, #object | 
 | cpu_80219_name: | 
 | 	.asciz	"XScale-80219" | 
 | 	.size	cpu_80219_name, . - cpu_80219_name | 
 |  | 
 | 	.type	cpu_8032x_name, #object | 
 | cpu_8032x_name: | 
 | 	.asciz	"XScale-IOP8032x Family" | 
 | 	.size	cpu_8032x_name, . - cpu_8032x_name | 
 |  | 
 | 	.type	cpu_8033x_name, #object | 
 | cpu_8033x_name: | 
 | 	.asciz	"XScale-IOP8033x Family" | 
 | 	.size	cpu_8033x_name, . - cpu_8033x_name | 
 |  | 
 | 	.type	cpu_pxa250_name, #object | 
 | cpu_pxa250_name: | 
 | 	.asciz	"XScale-PXA250" | 
 | 	.size	cpu_pxa250_name, . - cpu_pxa250_name | 
 |  | 
 | 	.type	cpu_pxa210_name, #object | 
 | cpu_pxa210_name: | 
 | 	.asciz	"XScale-PXA210" | 
 | 	.size	cpu_pxa210_name, . - cpu_pxa210_name | 
 |  | 
 | 	.type	cpu_ixp42x_name, #object | 
 | cpu_ixp42x_name: | 
 | 	.asciz	"XScale-IXP42x Family" | 
 | 	.size	cpu_ixp42x_name, . - cpu_ixp42x_name | 
 |  | 
 | 	.type	cpu_ixp46x_name, #object | 
 | cpu_ixp46x_name: | 
 | 	.asciz	"XScale-IXP46x Family" | 
 | 	.size	cpu_ixp46x_name, . - cpu_ixp46x_name | 
 |  | 
 | 	.type	cpu_ixp2400_name, #object | 
 | cpu_ixp2400_name: | 
 | 	.asciz	"XScale-IXP2400" | 
 | 	.size	cpu_ixp2400_name, . - cpu_ixp2400_name | 
 |  | 
 | 	.type	cpu_ixp2800_name, #object | 
 | cpu_ixp2800_name: | 
 | 	.asciz	"XScale-IXP2800" | 
 | 	.size	cpu_ixp2800_name, . - cpu_ixp2800_name | 
 |  | 
 | 	.type	cpu_pxa255_name, #object | 
 | cpu_pxa255_name: | 
 | 	.asciz	"XScale-PXA255" | 
 | 	.size	cpu_pxa255_name, . - cpu_pxa255_name | 
 |  | 
 | 	.type	cpu_pxa270_name, #object | 
 | cpu_pxa270_name: | 
 | 	.asciz	"XScale-PXA270" | 
 | 	.size	cpu_pxa270_name, . - cpu_pxa270_name | 
 |  | 
 | 	.align | 
 |  | 
 | 	.section ".proc.info.init", #alloc, #execinstr | 
 |  | 
 | 	.type	__80200_proc_info,#object | 
 | __80200_proc_info: | 
 | 	.long	0x69052000 | 
 | 	.long	0xfffffff0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_80200_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__80200_proc_info, . - __80200_proc_info | 
 |  | 
 | 	.type	__80219_proc_info,#object | 
 | __80219_proc_info: | 
 | 	.long	0x69052e20 | 
 | 	.long	0xffffffe0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_80219_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__80219_proc_info, . - __80219_proc_info | 
 |  | 
 | 	.type	__8032x_proc_info,#object | 
 | __8032x_proc_info: | 
 | 	.long	0x69052420 | 
 | 	.long	0xfffff7e0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_8032x_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__8032x_proc_info, . - __8032x_proc_info | 
 |  | 
 | 	.type	__8033x_proc_info,#object | 
 | __8033x_proc_info: | 
 | 	.long	0x69054010 | 
 | 	.long	0xffffff30 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_8033x_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__8033x_proc_info, . - __8033x_proc_info | 
 |  | 
 | 	.type	__pxa250_proc_info,#object | 
 | __pxa250_proc_info: | 
 | 	.long	0x69052100 | 
 | 	.long	0xfffff7f0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_pxa250_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__pxa250_proc_info, . - __pxa250_proc_info | 
 |  | 
 | 	.type	__pxa210_proc_info,#object | 
 | __pxa210_proc_info: | 
 | 	.long	0x69052120 | 
 | 	.long	0xfffff3f0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_pxa210_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__pxa210_proc_info, . - __pxa210_proc_info | 
 |  | 
 | 	.type	__ixp2400_proc_info, #object | 
 | __ixp2400_proc_info: | 
 | 	.long   0x69054190 | 
 | 	.long   0xfffffff0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b       __xscale_setup | 
 | 	.long   cpu_arch_name | 
 | 	.long   cpu_elf_name | 
 | 	.long   HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long   cpu_ixp2400_name | 
 | 	.long   xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size   __ixp2400_proc_info, . - __ixp2400_proc_info                 | 
 |  | 
 | 	.type	__ixp2800_proc_info, #object | 
 | __ixp2800_proc_info: | 
 | 	.long   0x690541a0 | 
 | 	.long   0xfffffff0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b       __xscale_setup | 
 | 	.long   cpu_arch_name | 
 | 	.long   cpu_elf_name | 
 | 	.long   HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long   cpu_ixp2800_name | 
 | 	.long   xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size   __ixp2800_proc_info, . - __ixp2800_proc_info                 | 
 |  | 
 | 	.type	__ixp42x_proc_info, #object | 
 | __ixp42x_proc_info: | 
 | 	.long   0x690541c0 | 
 | 	.long   0xffffffc0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b       __xscale_setup | 
 | 	.long   cpu_arch_name | 
 | 	.long   cpu_elf_name | 
 | 	.long   HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long   cpu_ixp42x_name | 
 | 	.long   xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size   __ixp42x_proc_info, . - __ixp42x_proc_info                 | 
 |  | 
 | 	.type	__ixp46x_proc_info, #object | 
 | __ixp46x_proc_info: | 
 | 	.long   0x69054200 | 
 | 	.long   0xffffff00 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b       __xscale_setup | 
 | 	.long   cpu_arch_name | 
 | 	.long   cpu_elf_name | 
 | 	.long   HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long   cpu_ixp46x_name | 
 | 	.long   xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size   __ixp46x_proc_info, . - __ixp46x_proc_info | 
 |  | 
 | 	.type	__pxa255_proc_info,#object | 
 | __pxa255_proc_info: | 
 | 	.long	0x69052d00 | 
 | 	.long	0xfffffff0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_pxa255_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__pxa255_proc_info, . - __pxa255_proc_info | 
 |  | 
 | 	.type	__pxa270_proc_info,#object | 
 | __pxa270_proc_info: | 
 | 	.long	0x69054110 | 
 | 	.long	0xfffffff0 | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_BUFFERABLE | \ | 
 | 		PMD_SECT_CACHEABLE | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	.long   PMD_TYPE_SECT | \ | 
 | 		PMD_SECT_AP_WRITE | \ | 
 | 		PMD_SECT_AP_READ | 
 | 	b	__xscale_setup | 
 | 	.long	cpu_arch_name | 
 | 	.long	cpu_elf_name | 
 | 	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP | 
 | 	.long	cpu_pxa270_name | 
 | 	.long	xscale_processor_functions | 
 | 	.long	v4wbi_tlb_fns | 
 | 	.long	xscale_mc_user_fns | 
 | 	.long	xscale_cache_fns | 
 | 	.size	__pxa270_proc_info, . - __pxa270_proc_info | 
 |  |