arm/mm/proc-arm1020e.S

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  *  linux/arch/arm/mm/proc-arm1020e.S: MMU functions for ARM1020
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 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
146 	mov	r1, #(CACHE_DSEGMENTS - 1) << 5	@ 16 segments
147 1:	orr	r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
156 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
158 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
168  *	- start	- start address (inclusive)
169  *	- end	- end address (exclusive)
170  *	- flags	- vm_flags for this space
173 	mov	ip, #0
186 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
188 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
196  *	region described by start.  If you have non-snooping
199  *	- start	- virtual start address
200  *	- end	- virtual end address
212  *	region described by start.  If you have non-snooping
215  *	- start	- virtual start address
216  *	- end	- virtual end address
219 	mov	ip, #0
220 	bic	r0, r0, #CACHE_DLINESIZE - 1
231 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
242  *	- addr	- kernel address
243  *	- size	- region size
246 	mov	ip, #0
254 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
266  *	- start	- virtual start address
267  *	- end	- virtual end address
272 	mov	ip, #0
274 	tst	r0, #CACHE_DLINESIZE - 1
275 	bic	r0, r0, #CACHE_DLINESIZE - 1
277 	tst	r1, #CACHE_DLINESIZE - 1
284 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
292  *	- start	- virtual start address
293  *	- end	- virtual end address
298 	mov	ip, #0
300 	bic	r0, r0, #CACHE_DLINESIZE - 1
306 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
314  *	- start	- virtual start address
315  *	- end	- virtual end address
318 	mov	ip, #0
320 	bic	r0, r0, #CACHE_DLINESIZE - 1
326 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
332  *	- start	- kernel virtual start address
333  *	- size	- size of region
334  *	- dir	- DMA direction
346  *	- start	- kernel virtual start address
347  *	- size	- size of region
348  *	- dir	- DMA direction
357 	mov	ip, #0
382 2:	mov	ip, r3, LSL #26 		@ shift up entry
383 	orr	ip, ip, r1, LSL #5		@ shift in/up index
384 	mcr	p15, 0, ip, c7, c14, 2		@ Clean & Inval DCache entry
385 	mov	ip, #0
439 	.size	__arm1020e_setup, . - __arm1020e_setup
451 	@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
485 	.size	__arm1020e_proc_info, . - __arm1020e_proc_info