diff options
Diffstat (limited to 'src/arch/riscv/virtual_memory.c')
| -rw-r--r-- | src/arch/riscv/virtual_memory.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/src/arch/riscv/virtual_memory.c b/src/arch/riscv/virtual_memory.c index f0cd5f656a..385a5fd319 100644 --- a/src/arch/riscv/virtual_memory.c +++ b/src/arch/riscv/virtual_memory.c @@ -42,15 +42,18 @@ size_t pte_ppn(pte_t pte) pte_t ptd_create(uintptr_t ppn) { - return (ppn << PTE_PPN_SHIFT) | PTE_V | PTE_TYPE_TABLE; + return (ppn << PTE_PPN_SHIFT) | PTE_V; } pte_t pte_create(uintptr_t ppn, int prot, int user) { - pte_t pte = (ppn << PTE_PPN_SHIFT) | PTE_V; - if (prot & PROT_WRITE) pte |= PTE_TYPE_URW_SRW; - if (prot & PROT_EXEC) pte |= PTE_TYPE_URX_SRX; - if (!user) pte |= PTE_TYPE_SR; + pte_t pte = (ppn << PTE_PPN_SHIFT) | PTE_R | PTE_V; + if (prot & PROT_WRITE) + pte |= PTE_W; + if (prot & PROT_EXEC) + pte |= PTE_X; + if (user) + pte |= PTE_U; return pte; } @@ -127,10 +130,6 @@ void mstatus_init(void) // supervisor support is required uintptr_t ms = 0; - ms = INSERT_FIELD(ms, MSTATUS_PRV, PRV_M); - ms = INSERT_FIELD(ms, MSTATUS_PRV1, PRV_S); - ms = INSERT_FIELD(ms, MSTATUS_PRV2, PRV_U); - ms = INSERT_FIELD(ms, MSTATUS_IE2, 1); ms = INSERT_FIELD(ms, MSTATUS_FS, 3); ms = INSERT_FIELD(ms, MSTATUS_XS, 3); write_csr(mstatus, ms); |