[4/5] hw/mips/addr: Add translation helpers for KSEG1

Commit Message

Jiaxun Yang Dec. 7, 2020, 5:13 a.m. UTC

It's useful for bootloader to do IO opreations.

Signed-off-by: Jiaxun Yang <[e-mail]>
---
 hw/mips/addr.c            | 11 +++++++++++
 include/hw/mips/cpudevs.h |  2 ++
 2 files changed, 13 insertions(+)

Patch

diff --git a/hw/mips/addr.c b/hw/mips/addr.c
index 2f138fe1ea..9d21cc2eb0 100644
--- a/hw/mips/addr.c
+++ b/hw/mips/addr.c
@@ -35,6 +35,17 @@  uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr)
     return addr | ~0x7fffffffll;
 }
 
+uint64_t cpu_mips_kseg1_to_phys(void *opaque, uint64_t addr)
+{
+    return addr & 0x1fffffffll;
+}
+
+uint64_t cpu_mips_phys_to_kseg1(void *opaque, uint64_t addr)
+{
+    return (addr & 0x1fffffffll) | 0xffffffffa0000000ll;
+}
+
+
 uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr)
 {
     return addr | 0x40000000ll;
diff --git a/include/hw/mips/cpudevs.h b/include/hw/mips/cpudevs.h
index 0b3e060c95..048767db67 100644
--- a/include/hw/mips/cpudevs.h
+++ b/include/hw/mips/cpudevs.h
@@ -8,6 +8,8 @@ 
 /* addr.c */
 uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr);
 uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr);
+uint64_t cpu_mips_kseg1_to_phys(void *opaque, uint64_t addr);
+uint64_t cpu_mips_phys_to_kseg1(void *opaque, uint64_t addr);
 uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr);
 bool mips_um_ksegs_enabled(void);
 void mips_um_ksegs_enable(void);