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      1 // SPDX-License-Identifier: GPL-2.0+
      2 /*
      3  * (C) Copyright 2017
      4  * Christophe Leroy, CS Systemes d'Information, christophe.leroy (at) c-s.fr
      5  */
      6 
      7 #include <common.h>
      8 #include <asm/processor.h>
      9 #include <asm/ppc.h>
     10 #include <asm/io.h>
     11 #include <asm/mmu.h>
     12 
     13 int icache_status(void)
     14 {
     15 	return !!(mfspr(IC_CST) & IDC_ENABLED);
     16 }
     17 
     18 void icache_enable(void)
     19 {
     20 	sync();
     21 	mtspr(IC_CST, IDC_INVALL);
     22 	mtspr(IC_CST, IDC_ENABLE);
     23 }
     24 
     25 void icache_disable(void)
     26 {
     27 	sync();
     28 	mtspr(IC_CST, IDC_DISABLE);
     29 }
     30 
     31 int dcache_status(void)
     32 {
     33 	return !!(mfspr(IC_CST) & IDC_ENABLED);
     34 }
     35 
     36 void dcache_enable(void)
     37 {
     38 	mtspr(MD_CTR, MD_RESETVAL);	/* Set cache mode with MMU off */
     39 	mtspr(DC_CST, IDC_INVALL);
     40 	mtspr(DC_CST, IDC_ENABLE);
     41 }
     42 
     43 void dcache_disable(void)
     44 {
     45 	sync();
     46 	mtspr(DC_CST, IDC_DISABLE);
     47 	mtspr(DC_CST, IDC_INVALL);
     48 }
     49