From 26b2bc58599c02b35e55afbd1bd050faa3d187c2 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Wed, 8 Jun 2022 16:14:37 +1000 Subject: [PATCH] target/riscv: Don't expose the CPU properties on names CPUs There are currently two types of RISC-V CPUs: - Generic CPUs (base or any) that allow complete custimisation - "Named" CPUs that match existing hardware Users can use the base CPUs to custimise the extensions that they want, for example -cpu rv64,v=true. We originally exposed these as part of the named CPUs as well, but that was by accident. Exposing the CPU properties to named CPUs means that we accidently enable extensions that don't exist on the CPUs by default. For example the SiFive E CPU currently support the zba extension, which is a bug. This patch instead only exposes the CPU extensions to the generic CPUs. Signed-off-by: Alistair Francis Reviewed-by: Bin Meng Message-Id: <20220608061437.314434-1-alistair.francis@opensource.wdc.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 57 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 46 insertions(+), 11 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index e5aa1e9c1b..05e6521351 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -118,6 +118,8 @@ static const char * const riscv_intr_names[] = { "reserved" }; +static void register_cpu_props(DeviceState *dev); + const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) { if (async) { @@ -161,6 +163,7 @@ static void riscv_any_cpu_init(Object *obj) set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); #endif set_priv_version(env, PRIV_VERSION_1_12_0); + register_cpu_props(DEVICE(obj)); } #if defined(TARGET_RISCV64) @@ -169,6 +172,7 @@ static void rv64_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV64, 0); + register_cpu_props(DEVICE(obj)); } static void rv64_sifive_u_cpu_init(Object *obj) @@ -181,9 +185,11 @@ static void rv64_sifive_u_cpu_init(Object *obj) static void rv64_sifive_e_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; + RISCVCPU *cpu = RISCV_CPU(obj); + set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU); set_priv_version(env, PRIV_VERSION_1_10_0); - qdev_prop_set_bit(DEVICE(obj), "mmu", false); + cpu->cfg.mmu = false; } static void rv128_base_cpu_init(Object *obj) @@ -197,6 +203,7 @@ static void rv128_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV128, 0); + register_cpu_props(DEVICE(obj)); } #else static void rv32_base_cpu_init(Object *obj) @@ -204,6 +211,7 @@ static void rv32_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV32, 0); + register_cpu_props(DEVICE(obj)); } static void rv32_sifive_u_cpu_init(Object *obj) @@ -216,27 +224,33 @@ static void rv32_sifive_u_cpu_init(Object *obj) static void rv32_sifive_e_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; + RISCVCPU *cpu = RISCV_CPU(obj); + set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU); set_priv_version(env, PRIV_VERSION_1_10_0); - qdev_prop_set_bit(DEVICE(obj), "mmu", false); + cpu->cfg.mmu = false; } static void rv32_ibex_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; + RISCVCPU *cpu = RISCV_CPU(obj); + set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU); set_priv_version(env, PRIV_VERSION_1_10_0); - qdev_prop_set_bit(DEVICE(obj), "mmu", false); - qdev_prop_set_bit(DEVICE(obj), "x-epmp", true); + cpu->cfg.mmu = false; + cpu->cfg.epmp = true; } static void rv32_imafcu_nommu_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; + RISCVCPU *cpu = RISCV_CPU(obj); + set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU); set_priv_version(env, PRIV_VERSION_1_10_0); set_resetvec(env, DEFAULT_RSTVEC); - qdev_prop_set_bit(DEVICE(obj), "mmu", false); + cpu->cfg.mmu = false; } #endif @@ -249,6 +263,7 @@ static void riscv_host_cpu_init(Object *obj) #elif defined(TARGET_RISCV64) set_misa(env, MXL_RV64, 0); #endif + register_cpu_props(DEVICE(obj)); } #endif @@ -836,6 +851,12 @@ static void riscv_cpu_init(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); + cpu->cfg.ext_counters = true; + cpu->cfg.ext_ifencei = true; + cpu->cfg.ext_icsr = true; + cpu->cfg.mmu = true; + cpu->cfg.pmp = true; + cpu_set_cpustate_pointers(cpu); #ifndef CONFIG_USER_ONLY @@ -844,7 +865,7 @@ static void riscv_cpu_init(Object *obj) #endif /* CONFIG_USER_ONLY */ } -static Property riscv_cpu_properties[] = { +static Property riscv_cpu_extensions[] = { /* Defaults for standard extensions */ DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true), DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false), @@ -867,17 +888,12 @@ static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false), DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), - DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true), DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), - DEFINE_PROP_UINT32("mvendorid", RISCVCPU, cfg.mvendorid, 0), - DEFINE_PROP_UINT64("marchid", RISCVCPU, cfg.marchid, RISCV_CPU_MARCHID), - DEFINE_PROP_UINT64("mimpid", RISCVCPU, cfg.mimpid, RISCV_CPU_MIMPID), - DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false), DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false), DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false), @@ -915,6 +931,25 @@ static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false), + DEFINE_PROP_END_OF_LIST(), +}; + +static void register_cpu_props(DeviceState *dev) +{ + Property *prop; + + for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { + qdev_property_add_static(dev, prop); + } +} + +static Property riscv_cpu_properties[] = { + DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true), + + DEFINE_PROP_UINT32("mvendorid", RISCVCPU, cfg.mvendorid, 0), + DEFINE_PROP_UINT64("marchid", RISCVCPU, cfg.marchid, RISCV_CPU_MARCHID), + DEFINE_PROP_UINT64("mimpid", RISCVCPU, cfg.mimpid, RISCV_CPU_MIMPID), + DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC), DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false),