2 * Copyright (c) 2010 Per Odlund <per.odlund@armagedon.se>
3 * Copyright (C) 2011 MARVELL INTERNATIONAL LTD.
6 * Developed by Semihalf.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of MARVELL nor the names of contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <machine/asm.h>
34 __FBSDID("$FreeBSD$");
36 #include <machine/sysreg.h>
41 .word _C_LABEL(arm_cache_loc)
43 .word _C_LABEL(arm_cache_type)
51 #define PT_NOS (1 << 5)
54 #define PT_INNER_WT (1 << 0)
55 #define PT_INNER_WB ((1 << 0) | (1 << 6))
56 #define PT_INNER_WBWA (1 << 6)
58 #define PT_OUTER_WT (2 << 3)
59 #define PT_OUTER_WB (3 << 3)
60 #define PT_OUTER_WBWA (1 << 3)
63 #define PT_ATTR (PT_S|PT_INNER_WBWA|PT_OUTER_WBWA|PT_NOS)
65 #define PT_ATTR (PT_INNER_WBWA|PT_OUTER_WBWA)
83 ENTRY(armv7_tlb_flushID)
95 END(armv7_tlb_flushID)
97 ENTRY(armv7_tlb_flushID_SE)
101 mcr CP15_TLBIMVAAIS(r0)
110 END(armv7_tlb_flushID_SE)
112 /* Based on algorithm from ARM Architecture Reference Manual */
113 ENTRY(armv7_dcache_wbinv_all)
114 stmdb sp!, {r4, r5, r6, r7, r8, r9}
116 /* Get cache level */
117 ldr r0, .Lcoherency_level
121 /* For each cache level */
124 /* Get cache type for given level */
134 /* Get number of ways */
136 ands r4, r4, r1, lsr #3
141 ands r7, r7, r1, lsr #13
146 orr r6, r6, r9, lsl r5
147 orr r6, r6, r7, lsl r2
149 /* Clean and invalidate data cache by way/index */
161 ldmia sp!, {r4, r5, r6, r7, r8, r9}
163 END(armv7_dcache_wbinv_all)
165 ENTRY(armv7_idcache_wbinv_all)
167 bl armv7_dcache_wbinv_all
177 END(armv7_idcache_wbinv_all)
179 /* XXX Temporary set it to 32 for MV cores, however this value should be
180 * get from Cache Type register
185 ENTRY(armv7_dcache_wb_range)
186 ldr ip, .Larmv7_line_size
196 dsb /* data synchronization barrier */
198 END(armv7_dcache_wb_range)
200 ENTRY(armv7_dcache_wbinv_range)
201 ldr ip, .Larmv7_line_size
207 mcr CP15_DCCIMVAC(r0)
210 bhi .Larmv7_wbinv_next
211 dsb /* data synchronization barrier */
213 END(armv7_dcache_wbinv_range)
216 * Note, we must not invalidate everything. If the range is too big we
217 * must use wb-inv of the entire cache.
219 ENTRY(armv7_dcache_inv_range)
220 ldr ip, .Larmv7_line_size
230 dsb /* data synchronization barrier */
232 END(armv7_dcache_inv_range)
234 ENTRY(armv7_idcache_wbinv_range)
235 ldr ip, .Larmv7_line_size
240 .Larmv7_id_wbinv_next:
242 mcr CP15_DCCIMVAC(r0)
245 bhi .Larmv7_id_wbinv_next
246 isb /* instruction synchronization barrier */
247 dsb /* data synchronization barrier */
249 END(armv7_idcache_wbinv_range)
251 ENTRY_NP(armv7_icache_sync_all)
257 isb /* instruction synchronization barrier */
258 dsb /* data synchronization barrier */
260 END(armv7_icache_sync_all)
262 ENTRY_NP(armv7_icache_sync_range)
263 ldr ip, .Larmv7_line_size
269 bhi .Larmv7_sync_next
270 isb /* instruction synchronization barrier */
271 dsb /* data synchronization barrier */
273 END(armv7_icache_sync_range)
275 ENTRY(armv7_cpu_sleep)
276 dsb /* data synchronization barrier */
277 wfi /* wait for interrupt */
281 ENTRY(armv7_context_switch)
295 END(armv7_context_switch)
297 ENTRY(armv7_drain_writebuf)
300 END(armv7_drain_writebuf)
311 bic r3, r2, r0 /* Clear bits */
312 eor r3, r3, r1 /* XOR bits */
321 * Invalidate all I+D+branch cache. Used by startup code, which counts
322 * on the fact that only r0-r3,ip are modified and no stack space is used.
324 ENTRY(armv7_idcache_inv_all)
326 mcr CP15_CSSELR(r0) @ set cache level to L1
329 ubfx r2, r0, #13, #15 @ get num sets - 1 from CCSIDR
330 ubfx r3, r0, #3, #10 @ get numways - 1 from CCSIDR
331 clz r1, r3 @ number of bits to MSB of way
332 lsl r3, r3, r1 @ shift into position
334 lsl ip, ip, r1 @ ip now contains the way decr
336 ubfx r0, r0, #0, #3 @ get linesize from CCSIDR
337 add r0, r0, #4 @ apply bias
338 lsl r2, r2, r0 @ shift sets by log2(linesize)
339 add r3, r3, r2 @ merge numsets - 1 with numways - 1
340 sub ip, ip, r2 @ subtract numsets - 1 from way decr
342 lsl r1, r1, r0 @ r1 now contains the set decr
343 mov r2, ip @ r2 now contains set way decr
345 /* r3 = ways/sets, r2 = way decr, r1 = set decr, r0 and ip are free */
346 1: mcr CP15_DCISW(r3) @ invalidate line
347 movs r0, r3 @ get current way/set
348 beq 2f @ at 0 means we are done.
349 movs r0, r0, lsl #10 @ clear way bits leaving only set bits
350 subne r3, r3, r1 @ non-zero?, decrement set #
351 subeq r3, r3, r2 @ zero?, decrement way # and restore set count
354 2: dsb @ wait for stores to finish
356 mcr CP15_ICIALLU @ invalidate instruction+branch cache
357 isb @ instruction sync barrier
359 END(armv7_idcache_inv_all)
361 ENTRY_NP(armv7_sleep)