[deliverable/linux.git] / arch / arm / mm / proc-macros.S

/*
 * We need constants.h for:
 *  VMA_VM_MM
 *  VMA_VM_FLAGS
 *  VM_EXEC
 */
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>

/*
 * vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm)
 */
	.macro	vma_vm_mm, rd, rn
	ldr	\rd, [\rn, #VMA_VM_MM]
	.endm

/*
 * vma_vm_flags - get vma->vm_flags
 */
	.macro	vma_vm_flags, rd, rn
	ldr	\rd, [\rn, #VMA_VM_FLAGS]
	.endm

	.macro	tsk_mm, rd, rn
	ldr	\rd, [\rn, #TI_TASK]
	ldr	\rd, [\rd, #TSK_ACTIVE_MM]
	.endm

/*
 * act_mm - get current->active_mm
 */
	.macro	act_mm, rd
	bic	\rd, sp, #8128
	bic	\rd, \rd, #63
	ldr	\rd, [\rd, #TI_TASK]
	ldr	\rd, [\rd, #TSK_ACTIVE_MM]
	.endm

/*
 * mmid - get context id from mm pointer (mm->context.id)
 * note, this field is 64bit, so in big-endian the two words are swapped too.
 */
	.macro	mmid, rd, rn
#ifdef __ARMEB__
	ldr	\rd, [\rn, #MM_CONTEXT_ID + 4 ]
#else
	ldr	\rd, [\rn, #MM_CONTEXT_ID]
#endif
	.endm

/*
 * mask_asid - mask the ASID from the context ID
 */
	.macro	asid, rd, rn
	and	\rd, \rn, #255
	.endm

	.macro	crval, clear, mmuset, ucset
#ifdef CONFIG_MMU
	.word	\clear
	.word	\mmuset
#else
	.word	\clear
	.word	\ucset
#endif
	.endm

/*
 * dcache_line_size - get the minimum D-cache line size from the CTR register
 * on ARMv7.
 */
	.macro	dcache_line_size, reg, tmp
	mrc	p15, 0, \tmp, c0, c0, 1		@ read ctr
	lsr	\tmp, \tmp, #16
	and	\tmp, \tmp, #0xf		@ cache line size encoding
	mov	\reg, #4			@ bytes per word
	mov	\reg, \reg, lsl \tmp		@ actual cache line size
	.endm

/*
 * icache_line_size - get the minimum I-cache line size from the CTR register
 * on ARMv7.
 */
	.macro	icache_line_size, reg, tmp
	mrc	p15, 0, \tmp, c0, c0, 1		@ read ctr
	and	\tmp, \tmp, #0xf		@ cache line size encoding
	mov	\reg, #4			@ bytes per word
	mov	\reg, \reg, lsl \tmp		@ actual cache line size
	.endm

/*
 * Sanity check the PTE configuration for the code below - which makes
 * certain assumptions about how these bits are laid out.
 */
#ifdef CONFIG_MMU
#if L_PTE_SHARED != PTE_EXT_SHARED
#error PTE shared bit mismatch
#endif
#if !defined (CONFIG_ARM_LPAE) && \
	(L_PTE_XN+L_PTE_USER+L_PTE_RDONLY+L_PTE_DIRTY+L_PTE_YOUNG+\
	 L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED
#error Invalid Linux PTE bit settings
#endif
#endif	/* CONFIG_MMU */

/*
 * The ARMv6 and ARMv7 set_pte_ext translation function.
 *
 * Permission translation:
 *  YUWD  APX AP1 AP0	SVC	User
 *  0xxx   0   0   0	no acc	no acc
 *  100x   1   0   1	r/o	no acc
 *  10x0   1   0   1	r/o	no acc
 *  1011   0   0   1	r/w	no acc
 *  110x   0   1   0	r/w	r/o
 *  11x0   0   1   0	r/w	r/o
 *  1111   0   1   1	r/w	r/w
 *
 * If !CONFIG_CPU_USE_DOMAINS, the following permissions are changed:
 *  110x   1   1   1	r/o	r/o
 *  11x0   1   1   1	r/o	r/o
 */
	.macro	armv6_mt_table pfx
\pfx\()_mt_table:
	.long	0x00						@ L_PTE_MT_UNCACHED
	.long	PTE_EXT_TEX(1)					@ L_PTE_MT_BUFFERABLE
	.long	PTE_CACHEABLE					@ L_PTE_MT_WRITETHROUGH
	.long	PTE_CACHEABLE | PTE_BUFFERABLE			@ L_PTE_MT_WRITEBACK
	.long	PTE_BUFFERABLE					@ L_PTE_MT_DEV_SHARED
	.long	0x00						@ unused
	.long	0x00						@ L_PTE_MT_MINICACHE (not present)
	.long	PTE_EXT_TEX(1) | PTE_CACHEABLE | PTE_BUFFERABLE	@ L_PTE_MT_WRITEALLOC
	.long	0x00						@ unused
	.long	PTE_EXT_TEX(1)					@ L_PTE_MT_DEV_WC
	.long	0x00						@ unused
	.long	PTE_CACHEABLE | PTE_BUFFERABLE			@ L_PTE_MT_DEV_CACHED
	.long	PTE_EXT_TEX(2)					@ L_PTE_MT_DEV_NONSHARED
	.long	0x00						@ unused
	.long	0x00						@ unused
	.long	0x00						@ unused
	.endm

	.macro	armv6_set_pte_ext pfx
	str	r1, [r0], #2048			@ linux version

	bic	r3, r1, #0x000003fc
	bic	r3, r3, #PTE_TYPE_MASK
	orr	r3, r3, r2
	orr	r3, r3, #PTE_EXT_AP0 | 2

	adr	ip, \pfx\()_mt_table
	and	r2, r1, #L_PTE_MT_MASK
	ldr	r2, [ip, r2]

	eor	r1, r1, #L_PTE_DIRTY
	tst	r1, #L_PTE_DIRTY|L_PTE_RDONLY
	orrne	r3, r3, #PTE_EXT_APX

	tst	r1, #L_PTE_USER
	orrne	r3, r3, #PTE_EXT_AP1
#ifdef CONFIG_CPU_USE_DOMAINS
	@ allow kernel read/write access to read-only user pages
	tstne	r3, #PTE_EXT_APX
	bicne	r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
#endif

	tst	r1, #L_PTE_XN
	orrne	r3, r3, #PTE_EXT_XN

	orr	r3, r3, r2

	tst	r1, #L_PTE_YOUNG
	tstne	r1, #L_PTE_PRESENT
	moveq	r3, #0
#ifndef CONFIG_CPU_USE_DOMAINS
	tstne	r1, #L_PTE_NONE
	movne	r3, #0
#endif

	str	r3, [r0]
	mcr	p15, 0, r0, c7, c10, 1		@ flush_pte
	.endm


/*
 * The ARMv3, ARMv4 and ARMv5 set_pte_ext translation function,
 * covering most CPUs except Xscale and Xscale 3.
 *
 * Permission translation:
 *  YUWD   AP	SVC	User
 *  0xxx  0x00	no acc	no acc
 *  100x  0x00	r/o	no acc
 *  10x0  0x00	r/o	no acc
 *  1011  0x55	r/w	no acc
 *  110x  0xaa	r/w	r/o
 *  11x0  0xaa	r/w	r/o
 *  1111  0xff	r/w	r/w
 */
	.macro	armv3_set_pte_ext wc_disable=1
	str	r1, [r0], #2048			@ linux version

	eor	r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY

	bic	r2, r1, #PTE_SMALL_AP_MASK	@ keep C, B bits
	bic	r2, r2, #PTE_TYPE_MASK
	orr	r2, r2, #PTE_TYPE_SMALL

	tst	r3, #L_PTE_USER			@ user?
	orrne	r2, r2, #PTE_SMALL_AP_URO_SRW

	tst	r3, #L_PTE_RDONLY | L_PTE_DIRTY	@ write and dirty?
	orreq	r2, r2, #PTE_SMALL_AP_UNO_SRW

	tst	r3, #L_PTE_PRESENT | L_PTE_YOUNG	@ present and young?
	movne	r2, #0

	.if	\wc_disable
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
	tst	r2, #PTE_CACHEABLE
	bicne	r2, r2, #PTE_BUFFERABLE
#endif
	.endif
	str	r2, [r0]		@ hardware version
	.endm


/*
 * Xscale set_pte_ext translation, split into two halves to cope
 * with work-arounds.  r3 must be preserved by code between these
 * two macros.
 *
 * Permission translation:
 *  YUWD  AP	SVC	User
 *  0xxx  00	no acc	no acc
 *  100x  00	r/o	no acc
 *  10x0  00	r/o	no acc
 *  1011  01	r/w	no acc
 *  110x  10	r/w	r/o
 *  11x0  10	r/w	r/o
 *  1111  11	r/w	r/w
 */
	.macro	xscale_set_pte_ext_prologue
	str	r1, [r0]			@ linux version

	eor	r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY

	bic	r2, r1, #PTE_SMALL_AP_MASK	@ keep C, B bits
	orr	r2, r2, #PTE_TYPE_EXT		@ extended page

	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_RDONLY | 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
	.endm

	.macro	xscale_set_pte_ext_epilogue
	tst	r3, #L_PTE_PRESENT | L_PTE_YOUNG	@ present and young?
	movne	r2, #0				@ no -> fault

	str	r2, [r0, #2048]!		@ hardware version
	mov	ip, #0
	mcr	p15, 0, r0, c7, c10, 1		@ clean L1 D line
	mcr	p15, 0, ip, c7, c10, 4		@ data write barrier
	.endm

.macro define_processor_functions name:req, dabort:req, pabort:req, nommu=0, suspend=0
	.type	\name\()_processor_functions, #object
	.align 2
ENTRY(\name\()_processor_functions)
	.word	\dabort
	.word	\pabort
	.word	cpu_\name\()_proc_init
	.word	cpu_\name\()_proc_fin
	.word	cpu_\name\()_reset
	.word	cpu_\name\()_do_idle
	.word	cpu_\name\()_dcache_clean_area
	.word	cpu_\name\()_switch_mm

	.if \nommu
	.word	0
	.else
	.word	cpu_\name\()_set_pte_ext
	.endif

	.if \suspend
	.word	cpu_\name\()_suspend_size
#ifdef CONFIG_PM_SLEEP
	.word	cpu_\name\()_do_suspend
	.word	cpu_\name\()_do_resume
#else
	.word	0
	.word	0
#endif
	.else
	.word	0
	.word	0
	.word	0
	.endif

	.size	\name\()_processor_functions, . - \name\()_processor_functions
.endm

.macro define_cache_functions name:req
	.align 2
	.type	\name\()_cache_fns, #object
ENTRY(\name\()_cache_fns)
	.long	\name\()_flush_icache_all
	.long	\name\()_flush_kern_cache_all
	.long   \name\()_flush_kern_cache_louis
	.long	\name\()_flush_user_cache_all
	.long	\name\()_flush_user_cache_range
	.long	\name\()_coherent_kern_range
	.long	\name\()_coherent_user_range
	.long	\name\()_flush_kern_dcache_area
	.long	\name\()_dma_map_area
	.long	\name\()_dma_unmap_area
	.long	\name\()_dma_flush_range
	.size	\name\()_cache_fns, . - \name\()_cache_fns
.endm

.macro define_tlb_functions name:req, flags_up:req, flags_smp
	.type	\name\()_tlb_fns, #object
ENTRY(\name\()_tlb_fns)
	.long	\name\()_flush_user_tlb_range
	.long	\name\()_flush_kern_tlb_range
	.ifnb \flags_smp
		ALT_SMP(.long	\flags_smp )
		ALT_UP(.long	\flags_up )
	.else
		.long	\flags_up
	.endif
	.size	\name\()_tlb_fns, . - \name\()_tlb_fns
.endm

.macro globl_equ x, y
	.globl	\x
	.equ	\x, \y
.endm
Commit	Line	Data
1da177e4 LT	1	/*
	2	* We need constants.h for:
	3	* VMA_VM_MM
	4	* VMA_VM_FLAGS
	5	* VM_EXEC
	6	*/
e6ae744d	7	#include <asm/asm-offsets.h>
1da177e4 LT	8	#include <asm/thread_info.h>
	9
	10	/*
	11	* vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm)
	12	*/
	13	.macro vma_vm_mm, rd, rn
	14	ldr \rd, [\rn, #VMA_VM_MM]
	15	.endm
	16
	17	/*
	18	* vma_vm_flags - get vma->vm_flags
	19	*/
	20	.macro vma_vm_flags, rd, rn
	21	ldr \rd, [\rn, #VMA_VM_FLAGS]
	22	.endm
	23
	24	.macro tsk_mm, rd, rn
	25	ldr \rd, [\rn, #TI_TASK]
	26	ldr \rd, [\rd, #TSK_ACTIVE_MM]
	27	.endm
	28
	29	/*
	30	* act_mm - get current->active_mm
	31	*/
	32	.macro act_mm, rd
	33	bic \rd, sp, #8128
	34	bic \rd, \rd, #63
	35	ldr \rd, [\rd, #TI_TASK]
	36	ldr \rd, [\rd, #TSK_ACTIVE_MM]
	37	.endm
	38
	39	/*
	40	* mmid - get context id from mm pointer (mm->context.id)
9520a5be	41	* note, this field is 64bit, so in big-endian the two words are swapped too.
1da177e4 LT	42	*/
1da177e4 LT	43	.macro mmid, rd, rn
9520a5be BD	44	#ifdef __ARMEB__
	45	ldr \rd, [\rn, #MM_CONTEXT_ID + 4 ]
	46	#else
1da177e4	47	ldr \rd, [\rn, #MM_CONTEXT_ID]
9520a5be	48	#endif
1da177e4 LT	49	.endm
	50
	51	/*
	52	* mask_asid - mask the ASID from the context ID
	53	*/
	54	.macro asid, rd, rn
	55	and \rd, \rn, #255
	56	.endm
22b19086 RK	57
	58	.macro crval, clear, mmuset, ucset
	59	#ifdef CONFIG_MMU
	60	.word \clear
	61	.word \mmuset
	62	#else
	63	.word \clear
	64	.word \ucset
	65	#endif
	66	.endm
bbe88886 CM	67
bbe88886 CM	68	/*
f91e2c3b CM	69	* dcache_line_size - get the minimum D-cache line size from the CTR register
f91e2c3b CM	70	* on ARMv7.
bbe88886 CM	71	*/
bbe88886 CM	72	.macro dcache_line_size, reg, tmp
f91e2c3b CM	73	mrc p15, 0, \tmp, c0, c0, 1 @ read ctr
	74	lsr \tmp, \tmp, #16
	75	and \tmp, \tmp, #0xf @ cache line size encoding
	76	mov \reg, #4 @ bytes per word
bbe88886 CM	77	mov \reg, \reg, lsl \tmp @ actual cache line size
bbe88886 CM	78	.endm
da091653	79
da30e0ac CM	80	/*
	81	* icache_line_size - get the minimum I-cache line size from the CTR register
	82	* on ARMv7.
	83	*/
	84	.macro icache_line_size, reg, tmp
	85	mrc p15, 0, \tmp, c0, c0, 1 @ read ctr
	86	and \tmp, \tmp, #0xf @ cache line size encoding
	87	mov \reg, #4 @ bytes per word
	88	mov \reg, \reg, lsl \tmp @ actual cache line size
	89	.endm
da091653 RK	90
	91	/*
	92	* Sanity check the PTE configuration for the code below - which makes
25985edc	93	* certain assumptions about how these bits are laid out.
da091653	94	*/
8b79d5f2	95	#ifdef CONFIG_MMU
da091653 RK	96	#if L_PTE_SHARED != PTE_EXT_SHARED
	97	#error PTE shared bit mismatch
	98	#endif
1b6ba46b CM	99	#if !defined (CONFIG_ARM_LPAE) && \
	100	(L_PTE_XN+L_PTE_USER+L_PTE_RDONLY+L_PTE_DIRTY+L_PTE_YOUNG+\
	101	L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED
da091653 RK	102	#error Invalid Linux PTE bit settings
da091653 RK	103	#endif
8b79d5f2	104	#endif /* CONFIG_MMU */
da091653 RK	105
	106	/*
	107	* The ARMv6 and ARMv7 set_pte_ext translation function.
	108	*
	109	* Permission translation:
	110	* YUWD APX AP1 AP0 SVC User
	111	* 0xxx 0 0 0 no acc no acc
	112	* 100x 1 0 1 r/o no acc
	113	* 10x0 1 0 1 r/o no acc
	114	* 1011 0 0 1 r/w no acc
	115	* 110x 0 1 0 r/w r/o
	116	* 11x0 0 1 0 r/w r/o
	117	* 1111 0 1 1 r/w r/w
247055aa CM	118	*
	119	* If !CONFIG_CPU_USE_DOMAINS, the following permissions are changed:
	120	* 110x 1 1 1 r/o r/o
	121	* 11x0 1 1 1 r/o r/o
da091653	122	*/
639b0ae7 RK	123	.macro armv6_mt_table pfx
	124	\pfx\()_mt_table:
	125	.long 0x00 @ L_PTE_MT_UNCACHED
	126	.long PTE_EXT_TEX(1) @ L_PTE_MT_BUFFERABLE
	127	.long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH
	128	.long PTE_CACHEABLE \| PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK
	129	.long PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED
	130	.long 0x00 @ unused
	131	.long 0x00 @ L_PTE_MT_MINICACHE (not present)
	132	.long PTE_EXT_TEX(1) \| PTE_CACHEABLE \| PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC
	133	.long 0x00 @ unused
	134	.long PTE_EXT_TEX(1) @ L_PTE_MT_DEV_WC
	135	.long 0x00 @ unused
	136	.long PTE_CACHEABLE \| PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED
	137	.long PTE_EXT_TEX(2) @ L_PTE_MT_DEV_NONSHARED
db5b7169	138	.long 0x00 @ unused
639b0ae7 RK	139	.long 0x00 @ unused
	140	.long 0x00 @ unused
	141	.endm
	142
	143	.macro armv6_set_pte_ext pfx
d30e45ee	144	str r1, [r0], #2048 @ linux version
da091653	145
639b0ae7	146	bic r3, r1, #0x000003fc
da091653 RK	147	bic r3, r3, #PTE_TYPE_MASK
	148	orr r3, r3, r2
	149	orr r3, r3, #PTE_EXT_AP0 \| 2
	150
639b0ae7 RK	151	adr ip, \pfx\()_mt_table
	152	and r2, r1, #L_PTE_MT_MASK
	153	ldr r2, [ip, r2]
	154
36bb94ba RK	155	eor r1, r1, #L_PTE_DIRTY
	156	tst r1, #L_PTE_DIRTY\|L_PTE_RDONLY
	157	orrne r3, r3, #PTE_EXT_APX
da091653 RK	158
	159	tst r1, #L_PTE_USER
	160	orrne r3, r3, #PTE_EXT_AP1
247055aa CM	161	#ifdef CONFIG_CPU_USE_DOMAINS
247055aa CM	162	@ allow kernel read/write access to read-only user pages
da091653 RK	163	tstne r3, #PTE_EXT_APX
da091653 RK	164	bicne r3, r3, #PTE_EXT_APX \| PTE_EXT_AP0
247055aa	165	#endif
da091653	166
9522d7e4 RK	167	tst r1, #L_PTE_XN
9522d7e4 RK	168	orrne r3, r3, #PTE_EXT_XN
da091653	169
639b0ae7 RK	170	orr r3, r3, r2
639b0ae7 RK	171
da091653 RK	172	tst r1, #L_PTE_YOUNG
	173	tstne r1, #L_PTE_PRESENT
	174	moveq r3, #0
26ffd0d4 WD	175	#ifndef CONFIG_CPU_USE_DOMAINS
	176	tstne r1, #L_PTE_NONE
	177	movne r3, #0
	178	#endif
da091653 RK	179
	180	str r3, [r0]
	181	mcr p15, 0, r0, c7, c10, 1 @ flush_pte
	182	.endm
	183
	184
	185	/*
	186	* The ARMv3, ARMv4 and ARMv5 set_pte_ext translation function,
	187	* covering most CPUs except Xscale and Xscale 3.
	188	*
	189	* Permission translation:
	190	* YUWD AP SVC User
	191	* 0xxx 0x00 no acc no acc
	192	* 100x 0x00 r/o no acc
	193	* 10x0 0x00 r/o no acc
	194	* 1011 0x55 r/w no acc
	195	* 110x 0xaa r/w r/o
	196	* 11x0 0xaa r/w r/o
	197	* 1111 0xff r/w r/w
	198	*/
	199	.macro armv3_set_pte_ext wc_disable=1
d30e45ee	200	str r1, [r0], #2048 @ linux version
da091653	201
36bb94ba	202	eor r3, r1, #L_PTE_PRESENT \| L_PTE_YOUNG \| L_PTE_DIRTY
da091653 RK	203
	204	bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits
	205	bic r2, r2, #PTE_TYPE_MASK
	206	orr r2, r2, #PTE_TYPE_SMALL
	207
	208	tst r3, #L_PTE_USER @ user?
	209	orrne r2, r2, #PTE_SMALL_AP_URO_SRW
	210
36bb94ba	211	tst r3, #L_PTE_RDONLY \| L_PTE_DIRTY @ write and dirty?
da091653 RK	212	orreq r2, r2, #PTE_SMALL_AP_UNO_SRW
	213
	214	tst r3, #L_PTE_PRESENT \| L_PTE_YOUNG @ present and young?
	215	movne r2, #0
	216
	217	.if \wc_disable
	218	#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
	219	tst r2, #PTE_CACHEABLE
	220	bicne r2, r2, #PTE_BUFFERABLE
	221	#endif
	222	.endif
d30e45ee	223	str r2, [r0] @ hardware version
da091653 RK	224	.endm
	225
	226
	227	/*
	228	* Xscale set_pte_ext translation, split into two halves to cope
	229	* with work-arounds. r3 must be preserved by code between these
	230	* two macros.
	231	*
	232	* Permission translation:
	233	* YUWD AP SVC User
	234	* 0xxx 00 no acc no acc
	235	* 100x 00 r/o no acc
	236	* 10x0 00 r/o no acc
	237	* 1011 01 r/w no acc
	238	* 110x 10 r/w r/o
	239	* 11x0 10 r/w r/o
	240	* 1111 11 r/w r/w
	241	*/
	242	.macro xscale_set_pte_ext_prologue
d30e45ee	243	str r1, [r0] @ linux version
da091653	244
36bb94ba	245	eor r3, r1, #L_PTE_PRESENT \| L_PTE_YOUNG \| L_PTE_DIRTY
da091653 RK	246
	247	bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits
	248	orr r2, r2, #PTE_TYPE_EXT @ extended page
	249
	250	tst r3, #L_PTE_USER @ user?
	251	orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w
	252
36bb94ba	253	tst r3, #L_PTE_RDONLY \| L_PTE_DIRTY @ write and dirty?
da091653 RK	254	orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w
	255	@ combined with user -> user r/w
	256	.endm
	257
	258	.macro xscale_set_pte_ext_epilogue
	259	tst r3, #L_PTE_PRESENT \| L_PTE_YOUNG @ present and young?
	260	movne r2, #0 @ no -> fault
	261
d30e45ee	262	str r2, [r0, #2048]! @ hardware version
da091653 RK	263	mov ip, #0
	264	mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line
	265	mcr p15, 0, ip, c7, c10, 4 @ data write barrier
	266	.endm
66a625a8 DM	267
	268	.macro define_processor_functions name:req, dabort:req, pabort:req, nommu=0, suspend=0
	269	.type \name\()_processor_functions, #object
	270	.align 2
	271	ENTRY(\name\()_processor_functions)
	272	.word \dabort
	273	.word \pabort
	274	.word cpu_\name\()_proc_init
	275	.word cpu_\name\()_proc_fin
	276	.word cpu_\name\()_reset
	277	.word cpu_\name\()_do_idle
	278	.word cpu_\name\()_dcache_clean_area
	279	.word cpu_\name\()_switch_mm
	280
	281	.if \nommu
	282	.word 0
	283	.else
	284	.word cpu_\name\()_set_pte_ext
	285	.endif
	286
	287	.if \suspend
	288	.word cpu_\name\()_suspend_size
6645cb61	289	#ifdef CONFIG_PM_SLEEP
66a625a8 DM	290	.word cpu_\name\()_do_suspend
66a625a8 DM	291	.word cpu_\name\()_do_resume
6645cb61 RK	292	#else
	293	.word 0
	294	.word 0
	295	#endif
66a625a8 DM	296	.else
	297	.word 0
	298	.word 0
	299	.word 0
	300	.endif
	301
	302	.size \name\()_processor_functions, . - \name\()_processor_functions
	303	.endm
	304
	305	.macro define_cache_functions name:req
	306	.align 2
	307	.type \name\()_cache_fns, #object
	308	ENTRY(\name\()_cache_fns)
	309	.long \name\()_flush_icache_all
	310	.long \name\()_flush_kern_cache_all
031bd879	311	.long \name\()_flush_kern_cache_louis
66a625a8 DM	312	.long \name\()_flush_user_cache_all
	313	.long \name\()_flush_user_cache_range
	314	.long \name\()_coherent_kern_range
	315	.long \name\()_coherent_user_range
	316	.long \name\()_flush_kern_dcache_area
	317	.long \name\()_dma_map_area
	318	.long \name\()_dma_unmap_area
	319	.long \name\()_dma_flush_range
	320	.size \name\()_cache_fns, . - \name\()_cache_fns
	321	.endm
	322
	323	.macro define_tlb_functions name:req, flags_up:req, flags_smp
	324	.type \name\()_tlb_fns, #object
	325	ENTRY(\name\()_tlb_fns)
	326	.long \name\()_flush_user_tlb_range
	327	.long \name\()_flush_kern_tlb_range
	328	.ifnb \flags_smp
	329	ALT_SMP(.long \flags_smp )
	330	ALT_UP(.long \flags_up )
	331	.else
	332	.long \flags_up
	333	.endif
	334	.size \name\()_tlb_fns, . - \name\()_tlb_fns
	335	.endm
3e0a07f8 GC	336
	337	.macro globl_equ x, y
	338	.globl \x
	339	.equ \x, \y
	340	.endm