diff options
Diffstat (limited to 'model/riscv_sys_control.sail')
| -rw-r--r-- | model/riscv_sys_control.sail | 32 |
1 files changed, 9 insertions, 23 deletions
diff --git a/model/riscv_sys_control.sail b/model/riscv_sys_control.sail index 94e8a4c..4dfe365 100644 --- a/model/riscv_sys_control.sail +++ b/model/riscv_sys_control.sail @@ -102,29 +102,14 @@ function is_CSR_defined (csr : csreg, p : Privilege) -> bool = 0x343 => p == Machine, // mtval 0x344 => p == Machine, // mip - 0x3A0 => p == Machine, // pmpcfg0 - 0x3A1 => p == Machine & (sizeof(xlen) == 32), // pmpcfg1 - 0x3A2 => p == Machine, // pmpcfg2 - 0x3A3 => p == Machine & (sizeof(xlen) == 32), // pmpcfg3 - - 0x3B0 => p == Machine, // pmpaddr0 - 0x3B1 => p == Machine, // pmpaddr1 - 0x3B2 => p == Machine, // pmpaddr2 - 0x3B3 => p == Machine, // pmpaddr3 - 0x3B4 => p == Machine, // pmpaddr4 - 0x3B5 => p == Machine, // pmpaddr5 - 0x3B6 => p == Machine, // pmpaddr6 - 0x3B7 => p == Machine, // pmpaddr7 - 0x3B8 => p == Machine, // pmpaddr8 - 0x3B9 => p == Machine, // pmpaddr9 - 0x3BA => p == Machine, // pmpaddrA - 0x3BB => p == Machine, // pmpaddrB - 0x3BC => p == Machine, // pmpaddrC - 0x3BD => p == Machine, // pmpaddrD - 0x3BE => p == Machine, // pmpaddrE - 0x3BF => p == Machine, // pmpaddrF - - /* counters */ + // pmpcfgN + 0x3A @ idx : bits(4) => p == Machine & sys_pmp_count() > unsigned(idx) & (idx[0] == bitzero | sizeof(xlen) == 32), + + // pmpaddrN. Unfortunately the PMP index does not nicely align with the CSR index bits. + 0x3B @ idx : bits(4) => p == Machine & sys_pmp_count() > unsigned(0b00 @ idx), + 0x3C @ idx : bits(4) => p == Machine & sys_pmp_count() > unsigned(0b01 @ idx), + 0x3D @ idx : bits(4) => p == Machine & sys_pmp_count() > unsigned(0b10 @ idx), + 0x3E @ idx : bits(4) => p == Machine & sys_pmp_count() > unsigned(0b11 @ idx), 0xB00 => p == Machine, // mcycle 0xB02 => p == Machine, // minstret @@ -623,6 +608,7 @@ function init_sys() -> unit = { vtype[vsew] = 0b000; vtype[vlmul] = 0b000; + // PMP's L and A fields are set to 0 on reset. init_pmp(); // log compatibility with spike |