Alexandre Ghiti 6f23aaeb9b riscv: Allow user to set the satp mode ... RISC-V specifies multiple sizes for addressable memory and Linux probes for the machine's support at startup via the satp CSR register (done in csr.c:validate_vm). As per the specification, sv64 must support sv57, which in turn must support sv48...etc. So we can restrict machine support by simply setting the "highest" supported mode and the bare mode is always supported. You can set the satp mode using the new properties "sv32", "sv39", "sv48", "sv57" and "sv64" as follows: -cpu rv64,sv57=on # Linux will boot using sv57 scheme -cpu rv64,sv39=on # Linux will boot using sv39 scheme -cpu rv64,sv57=off # Linux will boot using sv48 scheme -cpu rv64 # Linux will boot using sv57 scheme by default We take the highest level set by the user: -cpu rv64,sv48=on,sv57=on # Linux will boot using sv57 scheme We make sure that invalid configurations are rejected: -cpu rv64,sv39=off,sv48=on # sv39 must be supported if higher modes are # enabled We accept "redundant" configurations: -cpu rv64,sv48=on,sv57=off # Linux will boot using sv48 scheme And contradictory configurations: -cpu rv64,sv48=on,sv48=off # Linux will boot using sv39 scheme Co-Developed-by: Ludovic Henry <ludovic@rivosinc.com> Signed-off-by: Ludovic Henry <ludovic@rivosinc.com> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Bin Meng <bmeng@tinylab.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Frank Chang <frank.chang@sifive.com> Message-ID: <20230303131252.892893-4-alexghiti@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-03-06 08:09:42 -08:00
..
insn_trans	target/riscv: implement Zicbom extension	2023-03-05 11:49:42 -08:00
arch_dump.c
bitmanip_helper.c
common-semi-target.h
cpu_bits.h	target/riscv: Add csr support for svadu	2023-03-01 17:28:15 -08:00
cpu_helper.c	Merge patch series "target/riscv: Add support for Svadu extension"	2023-03-01 17:30:34 -08:00
cpu_user.h
cpu_vendorid.h	RISC-V: Add initial support for T-Head C906	2023-02-07 08:19:23 +10:00
cpu-param.h
cpu.c	riscv: Allow user to set the satp mode	2023-03-06 08:09:42 -08:00
cpu.h	riscv: Allow user to set the satp mode	2023-03-06 08:09:42 -08:00
crypto_helper.c
csr.c	riscv: Allow user to set the satp mode	2023-03-06 08:09:42 -08:00
debug.c	target/riscv: set tval for triggered watchpoints	2023-02-07 08:19:23 +10:00
debug.h	target/riscv: Add itrigger support when icount is enabled	2023-01-06 10:42:55 +10:00
fpu_helper.c	target/riscv: Remove helper_set_rod_rounding_mode	2023-01-20 10:14:14 +10:00
gdbstub.c	target/riscv: gdbstub: Drop the vector CSRs in riscv-vector.xml	2023-03-01 16:40:20 -08:00
helper.h	target/riscv: implement Zicbom extension	2023-03-05 11:49:42 -08:00
insn16.decode
insn32.decode	target/riscv: add Zicbop cbo.prefetch{i, r, m} placeholder	2023-03-05 11:49:43 -08:00
instmap.h
internals.h
Kconfig
kvm_riscv.h
kvm-stub.c
kvm.c	target/riscv: fix SBI getchar handler for KVM	2023-02-07 08:19:23 +10:00
m128_helper.c
machine.c	target/riscv/cpu: remove CPUArchState::features and friends	2023-03-01 13:47:16 -08:00
meson.build	RISC-V: Adding XTheadCmo ISA extension	2023-02-07 08:19:23 +10:00
monitor.c	target/riscv: remove RISCV_FEATURE_MMU	2023-03-01 13:47:15 -08:00
op_helper.c	target/riscv: implement Zicbom extension	2023-03-05 11:49:42 -08:00
pmp.c	target/riscv: remove RISCV_FEATURE_MMU	2023-03-01 13:47:15 -08:00
pmp.h	target/riscv: Fix PMP propagation for tlb	2023-01-06 10:42:55 +10:00
pmu.c
pmu.h	riscv: Clean up includes	2023-02-08 07:28:05 +01:00
sbi_ecall_interface.h
time_helper.c	target/riscv: No need to re-start QEMU timer when timecmp == UINT64_MAX	2023-02-07 08:19:23 +10:00
time_helper.h
trace-events
trace.h
translate.c	target/riscv: implement Zicboz extension	2023-03-05 11:49:20 -08:00
vector_helper.c	target/riscv/vector_helper.c: avoid env_archcpu() when reading RISCVCPUConfig	2023-03-01 18:09:45 -08:00
xthead.decode	RISC-V: Adding XTheadFmv ISA extension	2023-02-07 08:19:23 +10:00
XVentanaCondOps.decode