ARCv2: IOC: Allow boot time disable

abrodkin · abrodkin · commit ae2765c30c8b · 2015-06-09T15:56:08.000+03:00
Signed-off-by: Alexey Brodkin &lt;abrodkin@synopsys.com&gt;
diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
@@ -76,6 +76,7 @@
 static int l2_line_sz;
 int ioc_exists;
 volatile int slc_enable = 1;
+volatile int ioc_enable = 1;
 
 void (*_cache_line_loop_ic_fn)(unsigned long paddr, unsigned long vaddr,
 			    unsigned long sz, const int cacheop);
@@ -203,7 +204,7 @@ void read_decode_cache_bcr(void)
 	}
 
 	READ_BCR(ARC_REG_CLUSTER_BCR, cbcr);
-	if (cbcr.c)
+	if (cbcr.c & ioc_enable)
 		ioc_exists = 1;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -76,6 +76,7 @@`
`76`	`76`	`static int l2_line_sz;`
`77`	`77`	`int ioc_exists;`
`78`	`78`	`volatile int slc_enable = 1;`
	`79`	`+volatile int ioc_enable = 1;`
`79`	`80`
`80`	`81`	`void (*_cache_line_loop_ic_fn)(unsigned long paddr, unsigned long vaddr,`
`81`	`82`	`unsigned long sz, const int cacheop);`
`@@ -203,7 +204,7 @@ void read_decode_cache_bcr(void)`
`203`	`204`	`}`
`204`	`205`
`205`	`206`	`READ_BCR(ARC_REG_CLUSTER_BCR, cbcr);`
`206`		`- if (cbcr.c)`
	`207`	`+ if (cbcr.c & ioc_enable)`
`207`	`208`	`ioc_exists = 1;`
`208`	`209`	`}`
`209`	`210`