- add PTE_PBMT bits: It uses two PTE bits, but otherwise has no effect on QEMU,
since QEMU is sequentially consistent and doesn't model PMAs currently
- add PTE_PBMT bits check for inner PTE
- add reserved bits check for all PTE
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
---
target/riscv/cpu.c | 1 +
target/riscv/cpu.h | 1 +
target/riscv/cpu_bits.h | 3 +++
target/riscv/cpu_helper.c | 8 ++++++--
4 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 45ac98e06b..4f82bd00a3 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -670,6 +670,7 @@ static Property riscv_cpu_properties[] = {
DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false),
DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false),
+ DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false),
DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true),
DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true),
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index c3d1845ca1..53f314c752 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -329,6 +329,7 @@ struct RISCVCPU {
bool ext_icsr;
bool ext_svinval;
bool ext_svnapot;
+ bool ext_svpbmt;
bool ext_zfh;
bool ext_zfhmin;
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index bc23e3b523..ee294c1d0b 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -486,7 +486,10 @@ typedef enum {
#define PTE_A 0x040 /* Accessed */
#define PTE_D 0x080 /* Dirty */
#define PTE_SOFT 0x300 /* Reserved for Software */
+#define PTE_RSVD 0x1FC0000000000000 /* Reserved for future use */
+#define PTE_PBMT 0x6000000000000000 /* Page-based memory types */
#define PTE_N 0x8000000000000000 /* NAPOT translation */
+#define PTE_ATTR 0xFFC0000000000000 /* All attributes bits */
/* Page table PPN shift amount */
#define PTE_PPN_SHIFT 10
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 832a2dd79c..f90766e026 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -619,17 +619,21 @@ restart:
return TRANSLATE_FAIL;
}
- hwaddr ppn = (pte & ~(target_ulong)PTE_N) >> PTE_PPN_SHIFT;
+ hwaddr ppn = (pte & ~(target_ulong)PTE_ATTR) >> PTE_PPN_SHIFT;