arc: add architecture header files
These are header files used by ARC700 architecture.
Also note that "arch-arc700/hardware.h" is only required for compilation of
"designware_i2c" driver which refers to "asm/arch/hardware.h".
It would be good to fix mentioned driver sometime soon but it will cause
changes in ARM board configs that use "designware_i2c".
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Francois Bedard <fbedard@synopsys.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
new file mode 100644
index 0000000..5d48d11
--- /dev/null
+++ b/arch/arc/include/asm/arcregs.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ASM_ARC_ARCREGS_H
+#define _ASM_ARC_ARCREGS_H
+
+/*
+ * ARC architecture has additional address space - auxiliary registers.
+ * These registers are mostly used for configuration purposes.
+ * These registers are not memory mapped and special commands are used for
+ * access: "lr"/"sr".
+ */
+
+#define ARC_AUX_IDENTITY 0x04
+#define ARC_AUX_STATUS32 0x0a
+
+/* Instruction cache related auxiliary registers */
+#define ARC_AUX_IC_IVIC 0x10
+#define ARC_AUX_IC_CTRL 0x11
+#define ARC_AUX_IC_IVIL 0x19
+#if (CONFIG_ARC_MMU_VER > 2)
+#define ARC_AUX_IC_PTAG 0x1E
+#endif
+
+/* Timer related auxiliary registers */
+#define ARC_AUX_TIMER0_CNT 0x21 /* Timer 0 count */
+#define ARC_AUX_TIMER0_CTRL 0x22 /* Timer 0 control */
+#define ARC_AUX_TIMER0_LIMIT 0x23 /* Timer 0 limit */
+
+#define ARC_AUX_INTR_VEC_BASE 0x25
+
+/* Data cache related auxiliary registers */
+#define ARC_AUX_DC_IVDC 0x47
+#define ARC_AUX_DC_CTRL 0x48
+
+#define ARC_AUX_DC_IVDL 0x4A
+#define ARC_AUX_DC_FLSH 0x4B
+#define ARC_AUX_DC_FLDL 0x4C
+#if (CONFIG_ARC_MMU_VER > 2)
+#define ARC_AUX_DC_PTAG 0x5C
+#endif
+
+#ifndef __ASSEMBLY__
+/* Accessors for auxiliary registers */
+#define read_aux_reg(reg) __builtin_arc_lr(reg)
+
+/* gcc builtin sr needs reg param to be long immediate */
+#define write_aux_reg(reg_immed, val) \
+ __builtin_arc_sr((unsigned int)val, reg_immed)
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_ARC_ARCREGS_H */