target/mips/addr: Add translation helpers for KSEG1

It's useful for bootloader to do I/O operations.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Huacai Chen <chenhuacai@kernel.org>
Message-Id: <20201215064507.30148-3-jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/target/mips/addr.c b/target/mips/addr.c
index 27a6036c45..86f1c129c9 100644
--- a/target/mips/addr.c
+++ b/target/mips/addr.c
@@ -40,6 +40,16 @@ uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr)
     return addr | 0x40000000ll;
 }
 
+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;
+}
+
 bool mips_um_ksegs_enabled(void)
 {
     return mips_um_ksegs;