arm/mm/proc-xscale.S

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  *  linux/arch/arm/mm/proc-xscale.S
26 #include <asm/pgtable-hwdef.h>
29 #include "proc-macros.S"
60  * Reminder: the vector table is located at 0xffff0000-0xffff0fff.
66  * when we have to ensure that the last operation to the co-pro
150 	mcr	p15, 0, r1, c10, c4, 1		@ unlock I-TLB
151 	mcr	p15, 0, r1, c8, c5, 0		@ invalidate I-TLB
229  *	- start - start address (may not be aligned)
230  *	- end	- end address (exclusive, may not be aligned)
231  *	- vma	- vma_area_struct describing address space
257  *	region described by start.  If you have non-snooping
260  *	- start  - virtual start address
261  *	- end	 - virtual end address
263  *	Note: single I-cache line invalidation isn't used here since
264  *	it also trashes the mini I-cache used by JTAG debuggers.
267 	bic	r0, r0, #CACHELINESIZE - 1
282  *	region described by start.  If you have non-snooping
285  *	- start  - virtual start address
286  *	- end	 - virtual end address
289 	bic	r0, r0, #CACHELINESIZE - 1
307  *	- addr	- kernel address
308  *	- size	- region size
331  *	- start  - virtual start address
332  *	- end	 - virtual end address
335 	tst	r0, #CACHELINESIZE - 1
336 	bic	r0, r0, #CACHELINESIZE - 1
338 	tst	r1, #CACHELINESIZE - 1
352  *	- start  - virtual start address
353  *	- end	 - virtual end address
356 	bic	r0, r0, #CACHELINESIZE - 1
369  *	- start  - virtual start address
370  *	- end	 - virtual end address
373 	bic	r0, r0, #CACHELINESIZE - 1
385  *	- start	- kernel virtual start address
386  *	- size	- size of region
387  *	- dir	- DMA direction
398  * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't
402  * The recommended workaround is to always do a clean D-cache line before
403  * doing an invalidate D-cache line, so on the affected processors,
413  *	- start	- kernel virtual start address
414  *	- size	- size of region
415  *	- dir	- DMA direction
426  *	- start	- kernel virtual start address
427  *	- size	- size of region
428  *	- dir	- DMA direction
466  * Errata 40: must set memory to write-through for user read-only pages.
491 	@ Erratum 40: must set memory to write-through for user read-only pages
514 	stmfd	sp!, {r4 - r9, lr}
522 	stmia	r0, {r4 - r9}		@ store cp regs
523 	ldmfd	sp!, {r4 - r9, pc}
527 	ldmia	r0, {r4 - r9}		@ load cp regs
557 	.size	__xscale_setup, . - __xscale_setup
571 	@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
579 	string	cpu_80200_A0_A1_name, "XScale-80200 A0/A1"
580 	string	cpu_80200_name, "XScale-80200"
581 	string	cpu_80219_name, "XScale-80219"
582 	string	cpu_8032x_name, "XScale-IOP8032x Family"
583 	string	cpu_8033x_name, "XScale-IOP8033x Family"
584 	string	cpu_pxa250_name, "XScale-PXA250"
585 	string	cpu_pxa210_name, "XScale-PXA210"
586 	string	cpu_ixp42x_name, "XScale-IXP42x Family"
587 	string	cpu_ixp43x_name, "XScale-IXP43x Family"
588 	string	cpu_ixp46x_name, "XScale-IXP46x Family"
589 	string	cpu_ixp2400_name, "XScale-IXP2400"
590 	string	cpu_ixp2800_name, "XScale-IXP2800"
591 	string	cpu_pxa255_name, "XScale-PXA255"
592 	string	cpu_pxa270_name, "XScale-PXA270"
624 	.size	__\name\()_proc_info, . - __\name\()_proc_info