Add functions to read the CLIDR, Cache Level ID Register.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
arch/arm/include/asm/cachetype.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/include/asm/cachetype.h b/arch/arm/include/asm/cachetype.h
index e8c30430be33..90203a6d7270 100644
--- a/arch/arm/include/asm/cachetype.h
+++ b/arch/arm/include/asm/cachetype.h
@@ -81,6 +81,14 @@ static inline unsigned int read_ccsidr(void)
asm volatile("mrc p15, 1, %0, c0, c0, 0" : "=r" (val));
return val;
}
+
+static inline unsigned int read_clidr(void)
+{
+ unsigned int val;
+
+ asm volatile("mrc p15, 1, %0, c0, c0, 1" : "=r" (val));
+ return val;
+}
#else /* CONFIG_CPU_V7M */
#include <linux/io.h>
#include "asm/v7m.h"
@@ -94,6 +102,11 @@ static inline unsigned int read_ccsidr(void)
{
return readl(BASEADDR_V7M_SCB + V7M_SCB_CCSIDR);
}
+
+static inline unsigned int read_clidr(void)
+{
+ return readl(BASEADDR_V7M_SCB + V7M_SCB_CLIDR);
+}
#endif
#endif
--
2.39.2
