blob: 986f3019e2bc542ee6bc169c6a233e9cbd77ae50 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
#ifndef _VM_H
#define _VM_H
#include "encoding.h"
#include <stdint.h>
#define MEGAPAGE_SIZE ((uintptr_t)(RISCV_PGSIZE << RISCV_PGLEVEL_BITS))
#if __riscv_xlen == 64
# define SATP_MODE_CHOICE INSERT_FIELD(0, SATP64_MODE, SATP_MODE_SV39)
# define VA_BITS 39
# define GIGAPAGE_SIZE (MEGAPAGE_SIZE << RISCV_PGLEVEL_BITS)
#else
# define SATP_MODE_CHOICE INSERT_FIELD(0, SATP32_MODE, SATP_MODE_SV32)
# define VA_BITS 32
#endif
typedef uintptr_t pte_t;
extern pte_t* root_page_table;
static inline void flush_tlb()
{
asm volatile ("sfence.vma");
}
static inline pte_t pte_create(uintptr_t ppn, int type)
{
return (ppn << PTE_PPN_SHIFT) | PTE_V | type;
}
static inline pte_t ptd_create(uintptr_t ppn)
{
return pte_create(ppn, PTE_V);
}
#endif
|
