Change in coreboot[master]: riscv: Add DEFINE_MPRV_READ_MXR to read execution-only page

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/28394 )

Change subject: riscv: Add DEFINE_MPRV_READ_MXR to read execution-only page
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riscv: Add DEFINE_MPRV_READ_MXR to read execution-only page

Must to set MXR, when needs to read the page which is execution-only.
So make this change.

Change-Id: I19519782fe791982a8fbd48ef33b5a92a3c48bfc
Signed-off-by: Xiang Wang 
Reviewed-on: https://review.coreboot.org/28394
Tested-by: build bot (Jenkins) 
Reviewed-by: Jonathan Neuschäfer 
---
M src/arch/riscv/include/vm.h
1 file changed, 16 insertions(+), 3 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Jonathan Neuschäfer: Looks good to me, approved

diff --git a/src/arch/riscv/include/vm.h b/src/arch/riscv/include/vm.h
index a30d6bb..749c9c8 100644
--- a/src/arch/riscv/include/vm.h
+++ b/src/arch/riscv/include/vm.h
@@ -38,11 +38,11 @@
 void mstatus_init(void); // need to setup mstatus so we know we have virtual memory

-#define DEFINE_MPRV_READ(name, type, insn)				\
+#define DEFINE_MPRV_READ_FLAGS(name, type, insn, flags)			\
    static inline type name(type *p);				\
    static inline type name(type *p)				\
    {								\
-		size_t mprv = MSTATUS_MPRV;				\
+		size_t mprv = flags;		                        \
    	type value;						\
    	asm (							\
    		"csrs		mstatus, %1\n"			\
@@ -53,6 +53,12 @@
    	return value;						\
    }

+#define DEFINE_MPRV_READ(name, type, insn) \
+	DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV)
+
+#define DEFINE_MPRV_READ_MXR(name, type, insn) \
+	DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV | MSTATUS_MXR)
+
 #define DEFINE_MPRV_WRITE(name, type, insn)				\
    static inline void name(type *p, type value);			\
    static inline void name(type *p, type value)			\
@@ -83,6 +89,12 @@
 DEFINE_MPRV_READ(mprv_read_u64, uint64_t, ld)
 DEFINE_MPRV_READ(mprv_read_long, long, ld)
 DEFINE_MPRV_READ(mprv_read_ulong, unsigned long, ld)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_u8, uint8_t, lbu)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_u16, uint16_t, lhu)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_u32, uint32_t, lwu)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_u64, uint64_t, ld)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_long, long, ld)
+DEFINE_MPRV_READ_MXR(mprv_read_mxr_ulong, unsigned long, ld)
 DEFINE_MPRV_WRITE(mprv_write_u8, uint8_t, sb)
 DEFINE_MPRV_WRITE(mprv_write_u16, uint16_t, sh)
 DEFINE_MPRV_WRITE(mprv_write_u32, uint32_t, sw)
@@ -90,8 +102,9 @@
 DEFINE_MPRV_WRITE(mprv_write_long, long, sd)
 DEFINE_MPRV_WRITE(mprv_write_ulong, unsigned long, sd)

+#undef DEFINE_MPRV_READ_FLAGS
 #undef DEFINE_MPRV_READ
+#undef DEFINE_MPRV_READ_MXR
 #undef DEFINE_MPRV_WRITE

-
 #endif