Merge tag 'u-boot-atmel-fixes-2020.07-a' of https://gitlab.denx.de/u-boot/custodians...

[oweals/u-boot.git] / arch / arc / include / asm / arcregs.h

diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 9920d2e71952e10e3c956a41bee00391141d4759..a9f54f61e0cc7c4acc35d8ee7f8cd5c7b176a7a5 100644 (file)
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -16,6 +16,20 @@
  * access: "lr"/"sr".
  */
 
+/*
+ * Typically 8 least significant bits of Build Configuration Register (BCR)
+ * describe version of the HW block in question. Moreover if decoded version
+ * is 0 this means given HW block is absent - this is especially useful because
+ * we may safely read BRC regardless HW block existence while an attempt to
+ * access any other AUX regs associated with this HW block lead to imediate
+ * "instruction error" exception.
+ *
+ * I.e. before using any cofigurable HW block it's required to make sure it
+ * exists at all, and for that we introduce a special macro below.
+ */
+#define ARC_BCR_VERSION_MASK   GENMASK(7, 0)
+#define ARC_FEATURE_EXISTS(bcr)        !!(__builtin_arc_lr(bcr) & ARC_BCR_VERSION_MASK)
+
 #define ARC_AUX_IDENTITY       0x04
 #define ARC_AUX_STATUS32       0x0a
 
@@ -37,6 +51,9 @@
 #define ARC_AUX_DCCM_BASE      0x18    /* DCCM Base Addr ARCv2 */
 #define ARC_AUX_ICCM_BASE      0x208   /* ICCM Base Addr ARCv2 */
 
+/* CSM auxiliary registers */
+#define ARC_AUX_CSM_ENABLE     0x9A0
+
 /* Timer related auxiliary registers */
 #define ARC_AUX_TIMER0_CNT     0x21    /* Timer 0 count */
 #define ARC_AUX_TIMER0_CTRL    0x22    /* Timer 0 control */
@@ -73,7 +90,7 @@
 #define ARC_BCR_CLUSTER                0xcf
 
 /* MMU Management regs */
-#define ARC_AUX_MMU_BCR                0x06f
+#define ARC_AUX_MMU_BCR                0x6f
 
 /* IO coherency related auxiliary registers */
 #define ARC_AUX_IO_COH_ENABLE  0x500
@@ -81,7 +98,19 @@
 #define ARC_AUX_IO_COH_AP0_BASE        0x508
 #define ARC_AUX_IO_COH_AP0_SIZE        0x509
 
+/* XY-memory related */
+#define ARC_AUX_XY_BUILD       0x79
+
+/* DSP-extensions related auxiliary registers */
+#define ARC_AUX_DSP_BUILD      0x7A
+#define ARC_AUX_DSP_CTRL       0x59F
+
+/* ARC Subsystems related auxiliary registers */
+#define ARC_AUX_SUBSYS_BUILD   0xF0
+
 #ifndef __ASSEMBLY__
+#include <linux/bitops.h>
+
 /* Accessors for auxiliary registers */
 #define read_aux_reg(reg)      __builtin_arc_lr(reg)