Merge tag 'dmaengine-fix-4.6-rc4' of git://git.infradead.org/users/vkoul/slave-dma
[deliverable/linux.git] / arch / arm / mm / proc-v7.S
CommitLineData
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1/*
2 * linux/arch/arm/mm/proc-v7.S
3 *
4 * Copyright (C) 2001 Deep Blue Solutions Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This is the "shell" of the ARMv7 processor support.
11 */
991da17e 12#include <linux/init.h>
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13#include <linux/linkage.h>
14#include <asm/assembler.h>
15#include <asm/asm-offsets.h>
5ec9407d 16#include <asm/hwcap.h>
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17#include <asm/pgtable-hwdef.h>
18#include <asm/pgtable.h>
19
20#include "proc-macros.S"
21
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CM
22#ifdef CONFIG_ARM_LPAE
23#include "proc-v7-3level.S"
24#else
8d2cd3a3 25#include "proc-v7-2level.S"
1b6ba46b 26#endif
73b63efa 27
bbe88886 28ENTRY(cpu_v7_proc_init)
6ebbf2ce 29 ret lr
93ed3970 30ENDPROC(cpu_v7_proc_init)
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31
32ENTRY(cpu_v7_proc_fin)
1f667c69
TL
33 mrc p15, 0, r0, c1, c0, 0 @ ctrl register
34 bic r0, r0, #0x1000 @ ...i............
35 bic r0, r0, #0x0006 @ .............ca.
36 mcr p15, 0, r0, c1, c0, 0 @ disable caches
6ebbf2ce 37 ret lr
93ed3970 38ENDPROC(cpu_v7_proc_fin)
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39
40/*
41 * cpu_v7_reset(loc)
42 *
43 * Perform a soft reset of the system. Put the CPU into the
44 * same state as it would be if it had been reset, and branch
45 * to what would be the reset vector.
46 *
47 * - loc - location to jump to for soft reset
f4daf06f
WD
48 *
49 * This code must be executed using a flat identity mapping with
50 * caches disabled.
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51 */
52 .align 5
1a4baafa 53 .pushsection .idmap.text, "ax"
bbe88886 54ENTRY(cpu_v7_reset)
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WD
55 mrc p15, 0, r1, c1, c0, 0 @ ctrl register
56 bic r1, r1, #0x1 @ ...............m
0f81bb6b 57 THUMB( bic r1, r1, #1 << 30 ) @ SCTLR.TE (Thumb exceptions)
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WD
58 mcr p15, 0, r1, c1, c0, 0 @ disable MMU
59 isb
153cd8e8 60 bx r0
93ed3970 61ENDPROC(cpu_v7_reset)
1a4baafa 62 .popsection
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63
64/*
65 * cpu_v7_do_idle()
66 *
67 * Idle the processor (eg, wait for interrupt).
68 *
69 * IRQs are already disabled.
70 */
71ENTRY(cpu_v7_do_idle)
8553cb67 72 dsb @ WFI may enter a low-power mode
000b5025 73 wfi
6ebbf2ce 74 ret lr
93ed3970 75ENDPROC(cpu_v7_do_idle)
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76
77ENTRY(cpu_v7_dcache_clean_area)
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WD
78 ALT_SMP(W(nop)) @ MP extensions imply L1 PTW
79 ALT_UP_B(1f)
6ebbf2ce 80 ret lr
bf3f0f33
WD
811: dcache_line_size r2, r3
822: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
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83 add r0, r0, r2
84 subs r1, r1, r2
bf3f0f33 85 bhi 2b
6abdd491 86 dsb ishst
6ebbf2ce 87 ret lr
93ed3970 88ENDPROC(cpu_v7_dcache_clean_area)
bbe88886 89
78a8f3c3 90 string cpu_v7_name, "ARMv7 Processor"
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91 .align
92
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93/* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */
94.globl cpu_v7_suspend_size
f3db3f43 95.equ cpu_v7_suspend_size, 4 * 9
15e0d9e3 96#ifdef CONFIG_ARM_CPU_SUSPEND
f6b0fa02 97ENTRY(cpu_v7_do_suspend)
fa0708b3 98 stmfd sp!, {r4 - r11, lr}
f6b0fa02 99 mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID
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100 mrc p15, 0, r5, c13, c0, 3 @ User r/o thread ID
101 stmia r0!, {r4 - r5}
aa1aadc3 102#ifdef CONFIG_MMU
f6b0fa02 103 mrc p15, 0, r6, c3, c0, 0 @ Domain ID
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104#ifdef CONFIG_ARM_LPAE
105 mrrc p15, 1, r5, r7, c2 @ TTB 1
106#else
de8e71ca 107 mrc p15, 0, r7, c2, c0, 1 @ TTB 1
f3db3f43 108#endif
1b6ba46b 109 mrc p15, 0, r11, c2, c0, 2 @ TTB control register
aa1aadc3 110#endif
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111 mrc p15, 0, r8, c1, c0, 0 @ Control register
112 mrc p15, 0, r9, c1, c0, 1 @ Auxiliary control register
113 mrc p15, 0, r10, c1, c0, 2 @ Co-processor access control
f3db3f43 114 stmia r0, {r5 - r11}
fa0708b3 115 ldmfd sp!, {r4 - r11, pc}
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116ENDPROC(cpu_v7_do_suspend)
117
118ENTRY(cpu_v7_do_resume)
119 mov ip, #0
f6b0fa02 120 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
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121 mcr p15, 0, ip, c13, c0, 1 @ set reserved context ID
122 ldmia r0!, {r4 - r5}
f6b0fa02 123 mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
1aede681 124 mcr p15, 0, r5, c13, c0, 3 @ User r/o thread ID
f3db3f43 125 ldmia r0, {r5 - r11}
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126#ifdef CONFIG_MMU
127 mcr p15, 0, ip, c8, c7, 0 @ invalidate TLBs
f6b0fa02 128 mcr p15, 0, r6, c3, c0, 0 @ Domain ID
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129#ifdef CONFIG_ARM_LPAE
130 mcrr p15, 0, r1, ip, c2 @ TTB 0
131 mcrr p15, 1, r5, r7, c2 @ TTB 1
132#else
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133 ALT_SMP(orr r1, r1, #TTB_FLAGS_SMP)
134 ALT_UP(orr r1, r1, #TTB_FLAGS_UP)
135 mcr p15, 0, r1, c2, c0, 0 @ TTB 0
136 mcr p15, 0, r7, c2, c0, 1 @ TTB 1
f3db3f43 137#endif
1b6ba46b 138 mcr p15, 0, r11, c2, c0, 2 @ TTB control register
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139 ldr r4, =PRRR @ PRRR
140 ldr r5, =NMRR @ NMRR
141 mcr p15, 0, r4, c10, c2, 0 @ write PRRR
142 mcr p15, 0, r5, c10, c2, 1 @ write NMRR
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WD
143#endif /* CONFIG_MMU */
144 mrc p15, 0, r4, c1, c0, 1 @ Read Auxiliary control register
145 teq r4, r9 @ Is it already set?
146 mcrne p15, 0, r9, c1, c0, 1 @ No, so write it
147 mcr p15, 0, r10, c1, c0, 2 @ Co-processor access control
f6b0fa02 148 isb
f35235a3 149 dsb
de8e71ca 150 mov r0, r8 @ control register
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151 b cpu_resume_mmu
152ENDPROC(cpu_v7_do_resume)
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153#endif
154
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155/*
156 * Cortex-A8
157 */
158 globl_equ cpu_ca8_proc_init, cpu_v7_proc_init
159 globl_equ cpu_ca8_proc_fin, cpu_v7_proc_fin
160 globl_equ cpu_ca8_reset, cpu_v7_reset
161 globl_equ cpu_ca8_do_idle, cpu_v7_do_idle
162 globl_equ cpu_ca8_dcache_clean_area, cpu_v7_dcache_clean_area
163 globl_equ cpu_ca8_set_pte_ext, cpu_v7_set_pte_ext
164 globl_equ cpu_ca8_suspend_size, cpu_v7_suspend_size
165#ifdef CONFIG_ARM_CPU_SUSPEND
166 globl_equ cpu_ca8_do_suspend, cpu_v7_do_suspend
167 globl_equ cpu_ca8_do_resume, cpu_v7_do_resume
168#endif
169
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170/*
171 * Cortex-A9 processor functions
172 */
173 globl_equ cpu_ca9mp_proc_init, cpu_v7_proc_init
174 globl_equ cpu_ca9mp_proc_fin, cpu_v7_proc_fin
175 globl_equ cpu_ca9mp_reset, cpu_v7_reset
176 globl_equ cpu_ca9mp_do_idle, cpu_v7_do_idle
177 globl_equ cpu_ca9mp_dcache_clean_area, cpu_v7_dcache_clean_area
178 globl_equ cpu_ca9mp_switch_mm, cpu_v7_switch_mm
179 globl_equ cpu_ca9mp_set_pte_ext, cpu_v7_set_pte_ext
180.globl cpu_ca9mp_suspend_size
181.equ cpu_ca9mp_suspend_size, cpu_v7_suspend_size + 4 * 2
182#ifdef CONFIG_ARM_CPU_SUSPEND
183ENTRY(cpu_ca9mp_do_suspend)
184 stmfd sp!, {r4 - r5}
185 mrc p15, 0, r4, c15, c0, 1 @ Diagnostic register
186 mrc p15, 0, r5, c15, c0, 0 @ Power register
187 stmia r0!, {r4 - r5}
188 ldmfd sp!, {r4 - r5}
189 b cpu_v7_do_suspend
190ENDPROC(cpu_ca9mp_do_suspend)
191
192ENTRY(cpu_ca9mp_do_resume)
193 ldmia r0!, {r4 - r5}
194 mrc p15, 0, r10, c15, c0, 1 @ Read Diagnostic register
195 teq r4, r10 @ Already restored?
196 mcrne p15, 0, r4, c15, c0, 1 @ No, so restore it
197 mrc p15, 0, r10, c15, c0, 0 @ Read Power register
198 teq r5, r10 @ Already restored?
199 mcrne p15, 0, r5, c15, c0, 0 @ No, so restore it
200 b cpu_v7_do_resume
201ENDPROC(cpu_ca9mp_do_resume)
202#endif
203
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204#ifdef CONFIG_CPU_PJ4B
205 globl_equ cpu_pj4b_switch_mm, cpu_v7_switch_mm
206 globl_equ cpu_pj4b_set_pte_ext, cpu_v7_set_pte_ext
207 globl_equ cpu_pj4b_proc_init, cpu_v7_proc_init
208 globl_equ cpu_pj4b_proc_fin, cpu_v7_proc_fin
209 globl_equ cpu_pj4b_reset, cpu_v7_reset
210#ifdef CONFIG_PJ4B_ERRATA_4742
211ENTRY(cpu_pj4b_do_idle)
212 dsb @ WFI may enter a low-power mode
213 wfi
214 dsb @barrier
6ebbf2ce 215 ret lr
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216ENDPROC(cpu_pj4b_do_idle)
217#else
218 globl_equ cpu_pj4b_do_idle, cpu_v7_do_idle
219#endif
220 globl_equ cpu_pj4b_dcache_clean_area, cpu_v7_dcache_clean_area
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GC
221#ifdef CONFIG_ARM_CPU_SUSPEND
222ENTRY(cpu_pj4b_do_suspend)
223 stmfd sp!, {r6 - r10}
224 mrc p15, 1, r6, c15, c1, 0 @ save CP15 - extra features
225 mrc p15, 1, r7, c15, c2, 0 @ save CP15 - Aux Func Modes Ctrl 0
226 mrc p15, 1, r8, c15, c1, 2 @ save CP15 - Aux Debug Modes Ctrl 2
227 mrc p15, 1, r9, c15, c1, 1 @ save CP15 - Aux Debug Modes Ctrl 1
228 mrc p15, 0, r10, c9, c14, 0 @ save CP15 - PMC
229 stmia r0!, {r6 - r10}
230 ldmfd sp!, {r6 - r10}
231 b cpu_v7_do_suspend
232ENDPROC(cpu_pj4b_do_suspend)
233
234ENTRY(cpu_pj4b_do_resume)
235 ldmia r0!, {r6 - r10}
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236 mcr p15, 1, r6, c15, c1, 0 @ restore CP15 - extra features
237 mcr p15, 1, r7, c15, c2, 0 @ restore CP15 - Aux Func Modes Ctrl 0
238 mcr p15, 1, r8, c15, c1, 2 @ restore CP15 - Aux Debug Modes Ctrl 2
239 mcr p15, 1, r9, c15, c1, 1 @ restore CP15 - Aux Debug Modes Ctrl 1
240 mcr p15, 0, r10, c9, c14, 0 @ restore CP15 - PMC
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GC
241 b cpu_v7_do_resume
242ENDPROC(cpu_pj4b_do_resume)
243#endif
244.globl cpu_pj4b_suspend_size
7ca791c5 245.equ cpu_pj4b_suspend_size, cpu_v7_suspend_size + 4 * 5
3e0a07f8 246
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247#endif
248
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249/*
250 * __v7_setup
251 *
252 * Initialise TLB, Caches, and MMU state ready to switch the MMU
253 * on. Return in r0 the new CP15 C1 control register setting.
254 *
c76f238e 255 * r1, r2, r4, r5, r9, r13 must be preserved - r13 is not a stack
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256 * r4: TTBR0 (low word)
257 * r5: TTBR0 (high word if LPAE)
258 * r8: TTBR1
259 * r9: Main ID register
260 *
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261 * This should be able to cover all ARMv7 cores.
262 *
263 * It is assumed that:
264 * - cache type register is implemented
265 */
15eb169b 266__v7_ca5mp_setup:
14eff181 267__v7_ca9mp_setup:
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JA
268__v7_cr7mp_setup:
269 mov r10, #(1 << 0) @ Cache/TLB ops broadcasting
7665d9d2 270 b 1f
b4244738 271__v7_ca7mp_setup:
ddb2ff73 272__v7_ca12mp_setup:
7665d9d2 273__v7_ca15mp_setup:
c51e78ed 274__v7_b15mp_setup:
cd000cf6 275__v7_ca17mp_setup:
7665d9d2 276 mov r10, #0
b563d064
NP
2771: adr r0, __v7_setup_stack_ptr
278 ldr r12, [r0]
279 add r12, r12, r0 @ the local stack
280 stmia r12, {r1-r6, lr} @ v7_invalidate_l1 touches r0-r6
bac51ad9 281 bl v7_invalidate_l1
b563d064 282 ldmia r12, {r1-r6, lr}
73b63efa 283#ifdef CONFIG_SMP
0fc03d4c 284 orr r10, r10, #(1 << 6) @ Enable SMP/nAMP mode
f00ec48f 285 ALT_SMP(mrc p15, 0, r0, c1, c0, 1)
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RK
286 ALT_UP(mov r0, r10) @ fake it for UP
287 orr r10, r10, r0 @ Set required bits
288 teq r10, r0 @ Were they already set?
289 mcrne p15, 0, r10, c1, c0, 1 @ No, update register
73b63efa 290#endif
bac51ad9 291 b __v7_setup_cont
de490193 292
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RK
293/*
294 * Errata:
295 * r0, r10 available for use
296 * r1, r2, r4, r5, r9, r13: must be preserved
297 * r3: contains MIDR rX number in bits 23-20
298 * r6: contains MIDR rXpY as 8-bit XY number
299 * r9: MIDR
300 */
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301__ca8_errata:
302#if defined(CONFIG_ARM_ERRATA_430973) && !defined(CONFIG_ARCH_MULTIPLATFORM)
303 teq r3, #0x00100000 @ only present in r1p*
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RK
304 mrceq p15, 0, r0, c1, c0, 1 @ read aux control register
305 orreq r0, r0, #(1 << 6) @ set IBE to 1
306 mcreq p15, 0, r0, c1, c0, 1 @ write aux control register
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RK
307#endif
308#ifdef CONFIG_ARM_ERRATA_458693
309 teq r6, #0x20 @ only present in r2p0
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310 mrceq p15, 0, r0, c1, c0, 1 @ read aux control register
311 orreq r0, r0, #(1 << 5) @ set L1NEON to 1
312 orreq r0, r0, #(1 << 9) @ set PLDNOP to 1
313 mcreq p15, 0, r0, c1, c0, 1 @ write aux control register
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RK
314#endif
315#ifdef CONFIG_ARM_ERRATA_460075
316 teq r6, #0x20 @ only present in r2p0
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RK
317 mrceq p15, 1, r0, c9, c0, 2 @ read L2 cache aux ctrl register
318 tsteq r0, #1 << 22
319 orreq r0, r0, #(1 << 22) @ set the Write Allocate disable bit
320 mcreq p15, 1, r0, c9, c0, 2 @ write the L2 cache aux ctrl register
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RK
321#endif
322 b __errata_finish
323
324__ca9_errata:
325#ifdef CONFIG_ARM_ERRATA_742230
326 cmp r6, #0x22 @ only present up to r2p2
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RK
327 mrcle p15, 0, r0, c15, c0, 1 @ read diagnostic register
328 orrle r0, r0, #1 << 4 @ set bit #4
329 mcrle p15, 0, r0, c15, c0, 1 @ write diagnostic register
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RK
330#endif
331#ifdef CONFIG_ARM_ERRATA_742231
332 teq r6, #0x20 @ present in r2p0
333 teqne r6, #0x21 @ present in r2p1
334 teqne r6, #0x22 @ present in r2p2
c76f238e
RK
335 mrceq p15, 0, r0, c15, c0, 1 @ read diagnostic register
336 orreq r0, r0, #1 << 12 @ set bit #12
337 orreq r0, r0, #1 << 22 @ set bit #22
338 mcreq p15, 0, r0, c15, c0, 1 @ write diagnostic register
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RK
339#endif
340#ifdef CONFIG_ARM_ERRATA_743622
341 teq r3, #0x00200000 @ only present in r2p*
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342 mrceq p15, 0, r0, c15, c0, 1 @ read diagnostic register
343 orreq r0, r0, #1 << 6 @ set bit #6
344 mcreq p15, 0, r0, c15, c0, 1 @ write diagnostic register
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RK
345#endif
346#if defined(CONFIG_ARM_ERRATA_751472) && defined(CONFIG_SMP)
347 ALT_SMP(cmp r6, #0x30) @ present prior to r3p0
348 ALT_UP_B(1f)
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RK
349 mrclt p15, 0, r0, c15, c0, 1 @ read diagnostic register
350 orrlt r0, r0, #1 << 11 @ set bit #11
351 mcrlt p15, 0, r0, c15, c0, 1 @ write diagnostic register
17e7bf86
RK
3521:
353#endif
354 b __errata_finish
355
356__ca15_errata:
357#ifdef CONFIG_ARM_ERRATA_773022
358 cmp r6, #0x4 @ only present up to r0p4
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RK
359 mrcle p15, 0, r0, c1, c0, 1 @ read aux control register
360 orrle r0, r0, #1 << 1 @ disable loop buffer
361 mcrle p15, 0, r0, c1, c0, 1 @ write aux control register
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RK
362#endif
363 b __errata_finish
364
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GC
365__v7_pj4b_setup:
366#ifdef CONFIG_CPU_PJ4B
367
368/* Auxiliary Debug Modes Control 1 Register */
369#define PJ4B_STATIC_BP (1 << 2) /* Enable Static BP */
370#define PJ4B_INTER_PARITY (1 << 8) /* Disable Internal Parity Handling */
de490193
GC
371#define PJ4B_CLEAN_LINE (1 << 16) /* Disable data transfer for clean line */
372
373/* Auxiliary Debug Modes Control 2 Register */
374#define PJ4B_FAST_LDR (1 << 23) /* Disable fast LDR */
375#define PJ4B_SNOOP_DATA (1 << 25) /* Do not interleave write and snoop data */
376#define PJ4B_CWF (1 << 27) /* Disable Critical Word First feature */
377#define PJ4B_OUTSDNG_NC (1 << 29) /* Disable outstanding non cacheable rqst */
378#define PJ4B_L1_REP_RR (1 << 30) /* L1 replacement - Strict round robin */
379#define PJ4B_AUX_DBG_CTRL2 (PJ4B_SNOOP_DATA | PJ4B_CWF |\
380 PJ4B_OUTSDNG_NC | PJ4B_L1_REP_RR)
381
382/* Auxiliary Functional Modes Control Register 0 */
383#define PJ4B_SMP_CFB (1 << 1) /* Set SMP mode. Join the coherency fabric */
384#define PJ4B_L1_PAR_CHK (1 << 2) /* Support L1 parity checking */
385#define PJ4B_BROADCAST_CACHE (1 << 8) /* Broadcast Cache and TLB maintenance */
386
387/* Auxiliary Debug Modes Control 0 Register */
388#define PJ4B_WFI_WFE (1 << 22) /* WFI/WFE - serve the DVM and back to idle */
389
390 /* Auxiliary Debug Modes Control 1 Register */
391 mrc p15, 1, r0, c15, c1, 1
392 orr r0, r0, #PJ4B_CLEAN_LINE
de490193
GC
393 orr r0, r0, #PJ4B_INTER_PARITY
394 bic r0, r0, #PJ4B_STATIC_BP
395 mcr p15, 1, r0, c15, c1, 1
396
397 /* Auxiliary Debug Modes Control 2 Register */
398 mrc p15, 1, r0, c15, c1, 2
399 bic r0, r0, #PJ4B_FAST_LDR
400 orr r0, r0, #PJ4B_AUX_DBG_CTRL2
401 mcr p15, 1, r0, c15, c1, 2
402
403 /* Auxiliary Functional Modes Control Register 0 */
404 mrc p15, 1, r0, c15, c2, 0
405#ifdef CONFIG_SMP
406 orr r0, r0, #PJ4B_SMP_CFB
407#endif
408 orr r0, r0, #PJ4B_L1_PAR_CHK
409 orr r0, r0, #PJ4B_BROADCAST_CACHE
410 mcr p15, 1, r0, c15, c2, 0
411
412 /* Auxiliary Debug Modes Control 0 Register */
413 mrc p15, 1, r0, c15, c1, 0
414 orr r0, r0, #PJ4B_WFI_WFE
415 mcr p15, 1, r0, c15, c1, 0
416
417#endif /* CONFIG_CPU_PJ4B */
418
14eff181 419__v7_setup:
b563d064
NP
420 adr r0, __v7_setup_stack_ptr
421 ldr r12, [r0]
422 add r12, r12, r0 @ the local stack
423 stmia r12, {r1-r6, lr} @ v7_invalidate_l1 touches r0-r6
02b4e275 424 bl v7_invalidate_l1
b563d064 425 ldmia r12, {r1-r6, lr}
1946d6ef 426
bac51ad9 427__v7_setup_cont:
c76f238e
RK
428 and r0, r9, #0xff000000 @ ARM?
429 teq r0, #0x41000000
17e7bf86 430 bne __errata_finish
44194968
RK
431 and r3, r9, #0x00f00000 @ variant
432 and r6, r9, #0x0000000f @ revision
b2c3e38a 433 orr r6, r6, r3, lsr #20-4 @ combine variant and revision
44194968 434 ubfx r0, r9, #4, #12 @ primary part number
1946d6ef 435
6491848d
WD
436 /* Cortex-A8 Errata */
437 ldr r10, =0x00000c08 @ Cortex-A8 primary part number
438 teq r0, r10
17e7bf86 439 beq __ca8_errata
9f05027c
WD
440
441 /* Cortex-A9 Errata */
17e7bf86 442 ldr r10, =0x00000c09 @ Cortex-A9 primary part number
9f05027c 443 teq r0, r10
17e7bf86 444 beq __ca9_errata
1946d6ef 445
84b6504f 446 /* Cortex-A15 Errata */
17e7bf86 447 ldr r10, =0x00000c0f @ Cortex-A15 primary part number
84b6504f 448 teq r0, r10
17e7bf86 449 beq __ca15_errata
84b6504f 450
17e7bf86
RK
451__errata_finish:
452 mov r10, #0
bbe88886 453 mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate
2eb8c82b 454#ifdef CONFIG_MMU
bbe88886 455 mcr p15, 0, r10, c8, c7, 0 @ invalidate I + D TLBs
b2c3e38a
RK
456 v7_ttb_setup r10, r4, r5, r8, r3 @ TTBCR, TTBRx setup
457 ldr r3, =PRRR @ PRRR
f6b0fa02 458 ldr r6, =NMRR @ NMRR
b2c3e38a 459 mcr p15, 0, r3, c10, c2, 0 @ write PRRR
3f69c0c1 460 mcr p15, 0, r6, c10, c2, 1 @ write NMRR
078c0454 461#endif
bae0ca2b 462 dsb @ Complete invalidations
078c0454
JA
463#ifndef CONFIG_ARM_THUMBEE
464 mrc p15, 0, r0, c0, c1, 0 @ read ID_PFR0 for ThumbEE
465 and r0, r0, #(0xf << 12) @ ThumbEE enabled field
466 teq r0, #(1 << 12) @ check if ThumbEE is present
467 bne 1f
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RK
468 mov r3, #0
469 mcr p14, 6, r3, c1, c0, 0 @ Initialize TEEHBR to 0
078c0454
JA
470 mrc p14, 6, r0, c0, c0, 0 @ load TEECR
471 orr r0, r0, #1 @ set the 1st bit in order to
472 mcr p14, 6, r0, c0, c0, 0 @ stop userspace TEEHBR access
4731:
bdaaaec3 474#endif
b2c3e38a
RK
475 adr r3, v7_crval
476 ldmia r3, {r3, r6}
457c2403 477 ARM_BE8(orr r6, r6, #1 << 25) @ big-endian page tables
64d2dc38 478#ifdef CONFIG_SWP_EMULATE
b2c3e38a 479 orr r3, r3, #(1 << 10) @ set SW bit in "clear"
64d2dc38 480 bic r6, r6, #(1 << 10) @ clear it in "mmuset"
26584853 481#endif
2eb8c82b 482 mrc p15, 0, r0, c1, c0, 0 @ read control register
b2c3e38a 483 bic r0, r0, r3 @ clear bits them
2eb8c82b 484 orr r0, r0, r6 @ set them
347c8b70 485 THUMB( orr r0, r0, #1 << 30 ) @ Thumb exceptions
6ebbf2ce 486 ret lr @ return to head.S:__ret
b563d064
NP
487
488 .align 2
489__v7_setup_stack_ptr:
8ff97fa3 490 .word PHYS_RELATIVE(__v7_setup_stack, .)
93ed3970 491ENDPROC(__v7_setup)
bbe88886 492
b563d064 493 .bss
8d2cd3a3 494 .align 2
bbe88886 495__v7_setup_stack:
b563d064 496 .space 4 * 7 @ 7 registers
bbe88886 497
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RK
498 __INITDATA
499
78a8f3c3
DM
500 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
501 define_processor_functions v7, dabort=v7_early_abort, pabort=v7_pabort, suspend=1
a6d74678
RK
502#ifndef CONFIG_ARM_LPAE
503 define_processor_functions ca8, dabort=v7_early_abort, pabort=v7_pabort, suspend=1
ddd0c530 504 define_processor_functions ca9mp, dabort=v7_early_abort, pabort=v7_pabort, suspend=1
a6d74678 505#endif
3e0a07f8
GC
506#ifdef CONFIG_CPU_PJ4B
507 define_processor_functions pj4b, dabort=v7_early_abort, pabort=v7_pabort, suspend=1
508#endif
bbe88886 509
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RK
510 .section ".rodata"
511
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DM
512 string cpu_arch_name, "armv7"
513 string cpu_elf_name, "v7"
bbe88886
CM
514 .align
515
bf35706f 516 .section ".proc.info.init", #alloc
bbe88886 517
dc939cd8
PM
518 /*
519 * Standard v7 proc info content
520 */
bf35706f 521.macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions
dc939cd8 522 ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
1b6ba46b 523 PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags)
dc939cd8 524 ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
1b6ba46b
CM
525 PMD_SECT_AF | PMD_FLAGS_UP | \mm_mmuflags)
526 .long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | \
527 PMD_SECT_AP_READ | PMD_SECT_AF | \io_mmuflags
bf35706f 528 initfn \initfunc, \name
14eff181
DW
529 .long cpu_arch_name
530 .long cpu_elf_name
dc939cd8
PM
531 .long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB | HWCAP_FAST_MULT | \
532 HWCAP_EDSP | HWCAP_TLS | \hwcaps
14eff181 533 .long cpu_v7_name
3e0a07f8 534 .long \proc_fns
14eff181
DW
535 .long v7wbi_tlb_fns
536 .long v6_user_fns
537 .long v7_cache_fns
dc939cd8
PM
538.endm
539
1b6ba46b 540#ifndef CONFIG_ARM_LPAE
15eb169b
PM
541 /*
542 * ARM Ltd. Cortex A5 processor.
543 */
544 .type __v7_ca5mp_proc_info, #object
545__v7_ca5mp_proc_info:
546 .long 0x410fc050
547 .long 0xff0ffff0
bf35706f 548 __v7_proc __v7_ca5mp_proc_info, __v7_ca5mp_setup
15eb169b
PM
549 .size __v7_ca5mp_proc_info, . - __v7_ca5mp_proc_info
550
dc939cd8
PM
551 /*
552 * ARM Ltd. Cortex A9 processor.
553 */
554 .type __v7_ca9mp_proc_info, #object
555__v7_ca9mp_proc_info:
556 .long 0x410fc090
557 .long 0xff0ffff0
bf35706f 558 __v7_proc __v7_ca9mp_proc_info, __v7_ca9mp_setup, proc_fns = ca9mp_processor_functions
14eff181 559 .size __v7_ca9mp_proc_info, . - __v7_ca9mp_proc_info
de490193 560
a6d74678
RK
561 /*
562 * ARM Ltd. Cortex A8 processor.
563 */
564 .type __v7_ca8_proc_info, #object
565__v7_ca8_proc_info:
566 .long 0x410fc080
567 .long 0xff0ffff0
568 __v7_proc __v7_ca8_proc_info, __v7_setup, proc_fns = ca8_processor_functions
569 .size __v7_ca8_proc_info, . - __v7_ca8_proc_info
570
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GC
571#endif /* CONFIG_ARM_LPAE */
572
de490193
GC
573 /*
574 * Marvell PJ4B processor.
575 */
3e0a07f8 576#ifdef CONFIG_CPU_PJ4B
de490193
GC
577 .type __v7_pj4b_proc_info, #object
578__v7_pj4b_proc_info:
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GC
579 .long 0x560f5800
580 .long 0xff0fff00
bf35706f 581 __v7_proc __v7_pj4b_proc_info, __v7_pj4b_setup, proc_fns = pj4b_processor_functions
de490193 582 .size __v7_pj4b_proc_info, . - __v7_pj4b_proc_info
3e0a07f8 583#endif
14eff181 584
c90ad5c9
JA
585 /*
586 * ARM Ltd. Cortex R7 processor.
587 */
588 .type __v7_cr7mp_proc_info, #object
589__v7_cr7mp_proc_info:
590 .long 0x410fc170
591 .long 0xff0ffff0
bf35706f 592 __v7_proc __v7_cr7mp_proc_info, __v7_cr7mp_setup
c90ad5c9
JA
593 .size __v7_cr7mp_proc_info, . - __v7_cr7mp_proc_info
594
868dbf90
WD
595 /*
596 * ARM Ltd. Cortex A7 processor.
597 */
598 .type __v7_ca7mp_proc_info, #object
599__v7_ca7mp_proc_info:
600 .long 0x410fc070
601 .long 0xff0ffff0
bf35706f 602 __v7_proc __v7_ca7mp_proc_info, __v7_ca7mp_setup
868dbf90
WD
603 .size __v7_ca7mp_proc_info, . - __v7_ca7mp_proc_info
604
ddb2ff73
JA
605 /*
606 * ARM Ltd. Cortex A12 processor.
607 */
608 .type __v7_ca12mp_proc_info, #object
609__v7_ca12mp_proc_info:
610 .long 0x410fc0d0
611 .long 0xff0ffff0
bf35706f 612 __v7_proc __v7_ca12mp_proc_info, __v7_ca12mp_setup
ddb2ff73
JA
613 .size __v7_ca12mp_proc_info, . - __v7_ca12mp_proc_info
614
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WD
615 /*
616 * ARM Ltd. Cortex A15 processor.
617 */
618 .type __v7_ca15mp_proc_info, #object
619__v7_ca15mp_proc_info:
620 .long 0x410fc0f0
621 .long 0xff0ffff0
bf35706f 622 __v7_proc __v7_ca15mp_proc_info, __v7_ca15mp_setup
7665d9d2
WD
623 .size __v7_ca15mp_proc_info, . - __v7_ca15mp_proc_info
624
c51e78ed
MC
625 /*
626 * Broadcom Corporation Brahma-B15 processor.
627 */
628 .type __v7_b15mp_proc_info, #object
629__v7_b15mp_proc_info:
630 .long 0x420f00f0
631 .long 0xff0ffff0
bf35706f 632 __v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup
c51e78ed
MC
633 .size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info
634
cd000cf6
WD
635 /*
636 * ARM Ltd. Cortex A17 processor.
637 */
638 .type __v7_ca17mp_proc_info, #object
639__v7_ca17mp_proc_info:
640 .long 0x410fc0e0
641 .long 0xff0ffff0
bf35706f 642 __v7_proc __v7_ca17mp_proc_info, __v7_ca17mp_setup
cd000cf6
WD
643 .size __v7_ca17mp_proc_info, . - __v7_ca17mp_proc_info
644
120ecfaf
SM
645 /*
646 * Qualcomm Inc. Krait processors.
647 */
648 .type __krait_proc_info, #object
649__krait_proc_info:
650 .long 0x510f0400 @ Required ID value
651 .long 0xff0ffc00 @ Mask for ID
652 /*
653 * Some Krait processors don't indicate support for SDIV and UDIV
654 * instructions in the ARM instruction set, even though they actually
6f0f2a9f
SB
655 * do support them. They also don't indicate support for fused multiply
656 * instructions even though they actually do support them.
120ecfaf 657 */
bf35706f 658 __v7_proc __krait_proc_info, __v7_setup, hwcaps = HWCAP_IDIV | HWCAP_VFPv4
120ecfaf
SM
659 .size __krait_proc_info, . - __krait_proc_info
660
bbe88886
CM
661 /*
662 * Match any ARMv7 processor core.
663 */
664 .type __v7_proc_info, #object
665__v7_proc_info:
666 .long 0x000f0000 @ Required ID value
667 .long 0x000f0000 @ Mask for ID
bf35706f 668 __v7_proc __v7_proc_info, __v7_setup
bbe88886 669 .size __v7_proc_info, . - __v7_proc_info
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