arm/mm/proc-arm1022.S

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  *  linux/arch/arm/mm/proc-arm1022.S: MMU functions for ARM1022E
7  *  hacked for non-paged-MM by Hyok S. Choi, 2003.
17 #include <asm/asm-offsets.h>
19 #include <asm/pgtable-hwdef.h>
22 #include "proc-macros.S"
78  * Perform a soft reset of the system.	Put the CPU into the
82  * loc: location to jump to for soft reset
87 	mov	ip, #0
88 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
89 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
91 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
93 	mrc	p15, 0, ip, c1, c0, 0		@ ctrl register
94 	bic	ip, ip, #0x000f 		@ ............wcam
95 	bic	ip, ip, #0x1100 		@ ...i...s........
96 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
142 	mov	ip, #0
145 	mov	r1, #(CACHE_DSEGMENTS - 1) << 5	@ 16 segments
146 1:	orr	r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
155 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
157 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
167  *	- start	- start address (inclusive)
168  *	- end	- end address (exclusive)
169  *	- flags	- vm_flags for this space
172 	mov	ip, #0
185 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
187 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
195  *	region described by start.  If you have non-snooping
198  *	- start	- virtual start address
199  *	- end	- virtual end address
211  *	region described by start.  If you have non-snooping
214  *	- start	- virtual start address
215  *	- end	- virtual end address
218 	mov	ip, #0
219 	bic	r0, r0, #CACHE_DLINESIZE - 1
230 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
241  *	- addr	- kernel address
242  *	- size	- region size
245 	mov	ip, #0
253 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
265  *	- start	- virtual start address
266  *	- end	- virtual end address
271 	mov	ip, #0
273 	tst	r0, #CACHE_DLINESIZE - 1
274 	bic	r0, r0, #CACHE_DLINESIZE - 1
276 	tst	r1, #CACHE_DLINESIZE - 1
283 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
291  *	- start	- virtual start address
292  *	- end	- virtual end address
297 	mov	ip, #0
299 	bic	r0, r0, #CACHE_DLINESIZE - 1
305 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
313  *	- start	- virtual start address
314  *	- end	- virtual end address
317 	mov	ip, #0
319 	bic	r0, r0, #CACHE_DLINESIZE - 1
325 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
331  *	- start	- kernel virtual start address
332  *	- size	- size of region
333  *	- dir	- DMA direction
345  *	- start	- kernel virtual start address
346  *	- size	- size of region
347  *	- dir	- DMA direction
356 	mov	ip, #0
378 	mov	r1, #(CACHE_DSEGMENTS - 1) << 5	@ 16 segments
379 1:	orr	r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
431 	.size	__arm1022_setup, . - __arm1022_setup
444 	@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
478 	.size	__arm1022_proc_info, . - __arm1022_proc_info