root/arch/arm/mm/cache-nop.S

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #include <linux/linkage.h>
   3 #include <linux/init.h>
   4 #include <asm/assembler.h>
   5 
   6 #include "proc-macros.S"
   7 
   8 ENTRY(nop_flush_icache_all)
   9         ret     lr
  10 ENDPROC(nop_flush_icache_all)
  11 
  12         .globl nop_flush_kern_cache_all
  13         .equ nop_flush_kern_cache_all, nop_flush_icache_all
  14 
  15         .globl nop_flush_kern_cache_louis
  16         .equ nop_flush_kern_cache_louis, nop_flush_icache_all
  17 
  18         .globl nop_flush_user_cache_all
  19         .equ nop_flush_user_cache_all, nop_flush_icache_all
  20 
  21         .globl nop_flush_user_cache_range
  22         .equ nop_flush_user_cache_range, nop_flush_icache_all
  23 
  24         .globl nop_coherent_kern_range
  25         .equ nop_coherent_kern_range, nop_flush_icache_all
  26 
  27 ENTRY(nop_coherent_user_range)
  28         mov     r0, 0
  29         ret     lr
  30 ENDPROC(nop_coherent_user_range)
  31 
  32         .globl nop_flush_kern_dcache_area
  33         .equ nop_flush_kern_dcache_area, nop_flush_icache_all
  34 
  35         .globl nop_dma_flush_range
  36         .equ nop_dma_flush_range, nop_flush_icache_all
  37 
  38         .globl nop_dma_map_area
  39         .equ nop_dma_map_area, nop_flush_icache_all
  40 
  41         .globl nop_dma_unmap_area
  42         .equ nop_dma_unmap_area, nop_flush_icache_all
  43 
  44         __INITDATA
  45 
  46         @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
  47         define_cache_functions nop