arm/mm/proc-mohawk.S

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  *  linux/arch/arm/mm/proc-mohawk.S: MMU functions for Marvell PJ1 core
7  *  Heavily based on proc-arm926.S and proc-xsc3.S
16 #include <asm/pgtable-hwdef.h>
19 #include "proc-macros.S"
53  * Perform a soft reset of the system.  Put the CPU into the
57  * loc: location to jump to for soft reset
64 	mov	ip, #0
65 	mcr	p15, 0, ip, c7, c7, 0		@ invalidate I,D caches
66 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
67 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
68 	mrc	p15, 0, ip, c1, c0, 0		@ ctrl register
69 	bic	ip, ip, #0x0007			@ .............cam
70 	bic	ip, ip, #0x1100			@ ...i...s........
71 	mcr	p15, 0, ip, c1, c0, 0		@ ctrl register
115 	mov	ip, #0
117 	mcr	p15, 0, ip, c7, c14, 0		@ clean & invalidate all D cache
119 	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
120 	mcrne	p15, 0, ip, c7, c10, 0		@ drain write buffer
130  *	- start	- start address (inclusive)
131  *	- end	- end address (exclusive)
132  *	- flags	- vm_flags describing address space
137 	mov	ip, #0
151 	mcrne	p15, 0, ip, c7, c10, 4		@ drain WB
159  *	region described by start, end.  If you have non-snooping
162  *	- start	- virtual start address
163  *	- end	- virtual end address
175  *	region described by start, end.  If you have non-snooping
178  *	- start	- virtual start address
179  *	- end	- virtual end address
184 	bic	r0, r0, #CACHE_DLINESIZE - 1
201  *	- addr	- kernel address
202  *	- size	- region size
224  *	- start	- virtual start address
225  *	- end	- virtual end address
230 	tst	r0, #CACHE_DLINESIZE - 1
232 	tst	r1, #CACHE_DLINESIZE - 1
234 	bic	r0, r0, #CACHE_DLINESIZE - 1
247  *	- start	- virtual start address
248  *	- end	- virtual end address
253 	bic	r0, r0, #CACHE_DLINESIZE - 1
266  *	- start	- virtual start address
267  *	- end	- virtual end address
270 	bic	r0, r0, #CACHE_DLINESIZE - 1
282  *	- start	- kernel virtual start address
283  *	- size	- size of region
284  *	- dir	- DMA direction
296  *	- start	- kernel virtual start address
297  *	- size	- size of region
298  *	- dir	- DMA direction
322 	mov	ip, #0
323 	mcr	p15, 0, ip, c7, c14, 0		@ clean & invalidate all D cache
324 	mcr	p15, 0, ip, c7, c5, 0		@ invalidate I cache
325 	mcr	p15, 0, ip, c7, c10, 4		@ drain WB
328 	mcr	p15, 0, ip, c8, c7, 0		@ invalidate I & D TLBs
352 	stmfd	sp!, {r4 - r9, lr}
360 	stmia	r0, {r4 - r9}		@ store cp regs
361 	ldmia	sp!, {r4 - r9, pc}
365 	ldmia	r0, {r4 - r9}		@ load cp regs
366 	mov	ip, #0
367 	mcr	p15, 0, ip, c7, c7, 0	@ invalidate I & D caches, BTB
368 	mcr	p15, 0, ip, c7, c10, 4	@ drain write (&fill) buffer
369 	mcr	p15, 0, ip, c7, c5, 4	@ flush prefetch buffer
370 	mcr	p15, 0, ip, c8, c7, 0	@ invalidate I & D TLBs
402 	.size	__mohawk_setup, . - __mohawk_setup
416 	@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
452 	.size	__88sv331x_proc_info, . - __88sv331x_proc_info