mconfigptr is an mandatory CSR as per the priv spec.
This csr holds the physical address of the configuration
data structure if this data structure is implemented
Its an readonly csr set to zero making configuration
data structure not supported.
Signed-off-by: Rahul Pathak <rpat...@ventanamicro.com>
---
target/riscv/cpu_bits.h | 1 +
target/riscv/csr.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index 999187a9ee..5dc4729ed5 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -140,6 +140,7 @@
#define CSR_MARCHID 0xf12
#define CSR_MIMPID 0xf13
#define CSR_MHARTID 0xf14
+#define CSR_MCONFIGPTR 0xf15
/* Machine Trap Setup */
#define CSR_MSTATUS 0x300
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 23fbbd3216..2182943f54 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -1549,6 +1549,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
[CSR_MARCHID] = { "marchid", any, read_zero },
[CSR_MIMPID] = { "mimpid", any, read_zero },
[CSR_MHARTID] = { "mhartid", any, read_mhartid },
+ [CSR_MCONFIGPTR] = {"mconfigptr", any, read_zero },
/* Machine Trap Setup */
[CSR_MSTATUS] = { "mstatus", any, read_mstatus, write_mstatus
},
--
2.25.1
