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
15 #include <asm/pgtable-hwdef.h>
18 #include "proc-macros.S"
34 ENTRY(cpu_mohawk_proc_init)
40 ENTRY(cpu_mohawk_proc_fin)
60 ENTRY(cpu_mohawk_reset)
79 ENTRY(cpu_mohawk_do_idle)
90 ENTRY(mohawk_flush_icache_all)
100  *	address space.
102 ENTRY(mohawk_flush_user_cache_all)
110 ENTRY(mohawk_flush_kern_cache_all)
124  *	specified address range.
126  *	- start	- start address (inclusive)
127  *	- end	- end address (exclusive)
128  *	- flags	- vm_flags describing address space
132 ENTRY(mohawk_flush_user_cache_range)
138 	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D entry
139 	mcrne	p15, 0, r0, c7, c5, 1		@ invalidate I entry
141 	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D entry
142 	mcrne	p15, 0, r0, c7, c5, 1		@ invalidate I entry
154  *	region described by start, end.  If you have non-snooping
157  *	- start	- virtual start address
158  *	- end	- virtual end address
160 ENTRY(mohawk_coherent_kern_range)
167  *	region described by start, end.  If you have non-snooping
170  *	- start	- virtual start address
171  *	- end	- virtual end address
175 ENTRY(mohawk_coherent_user_range)
176 	bic	r0, r0, #CACHE_DLINESIZE - 1
177 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
178 	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
192  *	- addr	- kernel address
193  *	- size	- region size
195 ENTRY(mohawk_flush_kern_dcache_area)
197 1:	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
209  *	Invalidate (discard) the specified virtual address range.
214  *	- start	- virtual start address
215  *	- end	- virtual end address
220 	tst	r0, #CACHE_DLINESIZE - 1
221 	mcrne	p15, 0, r0, c7, c10, 1		@ clean D entry
222 	tst	r1, #CACHE_DLINESIZE - 1
223 	mcrne	p15, 0, r1, c7, c10, 1		@ clean D entry
224 	bic	r0, r0, #CACHE_DLINESIZE - 1
225 1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
235  *	Clean the specified virtual address range.
237  *	- start	- virtual start address
238  *	- end	- virtual end address
243 	bic	r0, r0, #CACHE_DLINESIZE - 1
244 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
254  *	Clean and invalidate the specified virtual address range.
256  *	- start	- virtual start address
257  *	- end	- virtual end address
259 ENTRY(mohawk_dma_flush_range)
260 	bic	r0, r0, #CACHE_DLINESIZE - 1
262 	mcr	p15, 0, r0, c7, c14, 1		@ clean+invalidate D entry
271  *	- start	- kernel virtual start address
272  *	- size	- size of region
273  *	- dir	- DMA direction
275 ENTRY(mohawk_dma_map_area)
285  *	- start	- kernel virtual start address
286  *	- size	- size of region
287  *	- dir	- DMA direction
289 ENTRY(mohawk_dma_unmap_area)
296 	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
299 ENTRY(cpu_mohawk_dcache_clean_area)
300 1:	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
315 ENTRY(cpu_mohawk_switch_mm)
331 ENTRY(cpu_mohawk_set_pte_ext)
335 	mcr	p15, 0, r0, c7, c10, 1		@ clean D entry
343 ENTRY(cpu_mohawk_do_suspend)
344 	stmfd	sp!, {r4 - r9, lr}
352 	stmia	r0, {r4 - r9}		@ store cp regs
353 	ldmia	sp!, {r4 - r9, pc}
356 ENTRY(cpu_mohawk_do_resume)
357 	ldmia	r0, {r4 - r9}		@ load cp regs
394 	.size	__mohawk_setup, . - __mohawk_setup
408 	@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
444 	.size	__88sv331x_proc_info, . - __88sv331x_proc_info