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[PATCH 4/5] hw/mips/addr: Add translation helpers for KSEG1
From: |
Jiaxun Yang |
Subject: |
[PATCH 4/5] hw/mips/addr: Add translation helpers for KSEG1 |
Date: |
Mon, 7 Dec 2020 13:13:35 +0800 |
It's useful for bootloader to do IO opreations.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
hw/mips/addr.c | 11 +++++++++++
include/hw/mips/cpudevs.h | 2 ++
2 files changed, 13 insertions(+)
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);
--
2.29.2
- [PATCH 0/5] MIPS Bootloader helper, Jiaxun Yang, 2020/12/07
- [PATCH 3/5] hw/mips/fuloong2e: Make use of bootloader helper, Jiaxun Yang, 2020/12/07
- [PATCH 1/5] hw/mips: Add a bootloader helper, Jiaxun Yang, 2020/12/07
- [PATCH 2/5] hw/mips/malta: Make use of bootloader helper, Jiaxun Yang, 2020/12/07
- [PATCH 4/5] hw/mips/addr: Add translation helpers for KSEG1,
Jiaxun Yang <=
- [PATCH 5/5] hw/mips/boston: Make use of bootloader helper, Jiaxun Yang, 2020/12/07
- Re: [PATCH 0/5] MIPS Bootloader helper, Philippe Mathieu-Daudé, 2020/12/07