tcg: Split out target/arch/cpu-param.h

For all targets, into this new file move TARGET_LONG_BITS,
TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS,
TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES.

Include this new file from exec/cpu-defs.h.

This now removes the somewhat odd requirement that target/arch/cpu.h
defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the
bulk of the includes within target/arch/cpu.h to the top.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/target/riscv/cpu-param.h b/target/riscv/cpu-param.h
new file mode 100644
index 0000000000..664fc1d371
--- /dev/null
+++ b/target/riscv/cpu-param.h
@@ -0,0 +1,23 @@
+/*
+ * RISC-V cpu parameters for qemu.
+ *
+ * Copyright (c) 2017-2018 SiFive, Inc.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef RISCV_CPU_PARAM_H
+#define RISCV_CPU_PARAM_H 1
+
+#if defined(TARGET_RISCV64)
+# define TARGET_LONG_BITS 64
+# define TARGET_PHYS_ADDR_SPACE_BITS 56 /* 44-bit PPN */
+# define TARGET_VIRT_ADDR_SPACE_BITS 48 /* sv48 */
+#elif defined(TARGET_RISCV32)
+# define TARGET_LONG_BITS 32
+# define TARGET_PHYS_ADDR_SPACE_BITS 34 /* 22-bit PPN */
+# define TARGET_VIRT_ADDR_SPACE_BITS 32 /* sv32 */
+#endif
+#define TARGET_PAGE_BITS 12 /* 4 KiB Pages */
+#define NB_MMU_MODES 4
+
+#endif