1/*
2 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
3 * Distributed under the terms of the NewOS License.
4 */
5#ifndef _KERNEL_ARCH_RISCV64_KERNEL_H
6#define _KERNEL_ARCH_RISCV64_KERNEL_H
7
8
9#ifndef _ASSEMBLER
10#ifdef __cplusplus
11#	include <arch/cpu.h>
12#endif
13#endif
14
15
16// memory layout
17#define KERNEL_LOAD_BASE          0xffffffc000000000
18
19
20#if (defined(__riscv) && __riscv_xlen == 64)
21
22// Base of the kernel address space.
23#define KERNEL_BASE               0xffffffc000000000
24#define KERNEL_SIZE               0x0000004000000000
25#define KERNEL_TOP                (KERNEL_BASE + (KERNEL_SIZE - 1))
26
27// Userspace address space layout.
28#define USER_BASE            (0x0000000000000000 + 0x1000)
29#define USER_BASE_ANY         USER_BASE
30#define USER_TOP             (0x0000004000000000 - 1)
31#define USER_SIZE            (USER_TOP - USER_BASE + 1)
32
33#define KERNEL_USER_DATA_BASE   (USER_BASE + 0x3000000000)
34#define USER_STACK_REGION       (USER_BASE + 0x3000000000)
35#define USER_STACK_REGION_SIZE  ((USER_TOP - USER_STACK_REGION) + 1)
36
37#else /* ! riscv64 */
38	#warning Unknown RISC-V Architecture!
39#endif
40
41#endif	/* _KERNEL_ARCH_RISCV64_KERNEL_H */
42