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qemu-e2k/target/riscv/cpu.c
Daniel Henrique Barboza 04eb30a03c target/riscv: add 'vlenb' field in cpu->cfg 
Our usage of 'vlenb' is overwhelming superior than the use of 'vlen'.
We're using 'vlenb' most of the time, having to do 'vlen >> 3' or
'vlen / 8' in every instance.

In hindsight we would be better if the 'vlenb' property  was introduced
instead of 'vlen'. That's not what happened, and now we can't easily get
rid of it due to user scripts all around. What we can do, however, is to
change our internal representation to use 'vlenb'.

Add a 'vlenb' field in cpu->cfg. It'll be set via the existing 'vlen'
property, i.e. setting 'vlen' will also set 'vlenb'.

We'll replace all 'vlen >> 3' code to use 'vlenb' directly. Start with
the single instance we have in target/riscv/cpu.c.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240122161107.26737-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-02-09 20:41:59 +10:00

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/*
* QEMU RISC-V CPU
*
* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
* Copyright (c) 2017-2018 SiFive, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/qemu-print.h"
#include "qemu/ctype.h"
#include "qemu/log.h"
#include "cpu.h"
#include "cpu_vendorid.h"
#include "internals.h"
#include "exec/exec-all.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "qemu/error-report.h"
#include "hw/qdev-properties.h"
#include "hw/core/qdev-prop-internal.h"
#include "migration/vmstate.h"
#include "fpu/softfloat-helpers.h"
#include "sysemu/kvm.h"
#include "sysemu/tcg.h"
#include "kvm/kvm_riscv.h"
#include "tcg/tcg-cpu.h"
#include "tcg/tcg.h"
/* RISC-V CPU definitions */
static const char riscv_single_letter_exts[] = "IEMAFDQCBPVH";
const uint32_t misa_bits[] = {RVI, RVE, RVM, RVA, RVF, RVD, RVV,
RVC, RVS, RVU, RVH, RVJ, RVG, RVB, 0};
/*
* From vector_helper.c
* Note that vector data is stored in host-endian 64-bit chunks,
* so addressing bytes needs a host-endian fixup.
*/
#if HOST_BIG_ENDIAN
#define BYTE(x) ((x) ^ 7)
#else
#define BYTE(x) (x)
#endif
bool riscv_cpu_is_32bit(RISCVCPU *cpu)
{
return riscv_cpu_mxl(&cpu->env) == MXL_RV32;
}
/* Hash that stores general user set numeric options */
static GHashTable *general_user_opts;
static void cpu_option_add_user_setting(const char *optname, uint32_t value)
{
g_hash_table_insert(general_user_opts, (gpointer)optname,
GUINT_TO_POINTER(value));
}
bool riscv_cpu_option_set(const char *optname)
{
return g_hash_table_contains(general_user_opts, optname);
}
#define ISA_EXT_DATA_ENTRY(_name, _min_ver, _prop) \
{#_name, _min_ver, CPU_CFG_OFFSET(_prop)}
/*
* Here are the ordering rules of extension naming defined by RISC-V
* specification :
* 1. All extensions should be separated from other multi-letter extensions
* by an underscore.
* 2. The first letter following the 'Z' conventionally indicates the most
* closely related alphabetical extension category, IMAFDQLCBKJTPVH.
* If multiple 'Z' extensions are named, they should be ordered first
* by category, then alphabetically within a category.
* 3. Standard supervisor-level extensions (starts with 'S') should be
* listed after standard unprivileged extensions. If multiple
* supervisor-level extensions are listed, they should be ordered
* alphabetically.
* 4. Non-standard extensions (starts with 'X') must be listed after all
* standard extensions. They must be separated from other multi-letter
* extensions by an underscore.
*
* Single letter extensions are checked in riscv_cpu_validate_misa_priv()
* instead.
*/
const RISCVIsaExtData isa_edata_arr[] = {
ISA_EXT_DATA_ENTRY(zicbom, PRIV_VERSION_1_12_0, ext_zicbom),
ISA_EXT_DATA_ENTRY(zicbop, PRIV_VERSION_1_12_0, ext_zicbop),
ISA_EXT_DATA_ENTRY(zicboz, PRIV_VERSION_1_12_0, ext_zicboz),
ISA_EXT_DATA_ENTRY(zicond, PRIV_VERSION_1_12_0, ext_zicond),
ISA_EXT_DATA_ENTRY(zicntr, PRIV_VERSION_1_12_0, ext_zicntr),
ISA_EXT_DATA_ENTRY(zicsr, PRIV_VERSION_1_10_0, ext_zicsr),
ISA_EXT_DATA_ENTRY(zifencei, PRIV_VERSION_1_10_0, ext_zifencei),
ISA_EXT_DATA_ENTRY(zihintntl, PRIV_VERSION_1_10_0, ext_zihintntl),
ISA_EXT_DATA_ENTRY(zihintpause, PRIV_VERSION_1_10_0, ext_zihintpause),
ISA_EXT_DATA_ENTRY(zihpm, PRIV_VERSION_1_12_0, ext_zihpm),
ISA_EXT_DATA_ENTRY(zmmul, PRIV_VERSION_1_12_0, ext_zmmul),
ISA_EXT_DATA_ENTRY(zacas, PRIV_VERSION_1_12_0, ext_zacas),
ISA_EXT_DATA_ENTRY(zawrs, PRIV_VERSION_1_12_0, ext_zawrs),
ISA_EXT_DATA_ENTRY(zfa, PRIV_VERSION_1_12_0, ext_zfa),
ISA_EXT_DATA_ENTRY(zfbfmin, PRIV_VERSION_1_12_0, ext_zfbfmin),
ISA_EXT_DATA_ENTRY(zfh, PRIV_VERSION_1_11_0, ext_zfh),
ISA_EXT_DATA_ENTRY(zfhmin, PRIV_VERSION_1_11_0, ext_zfhmin),
ISA_EXT_DATA_ENTRY(zfinx, PRIV_VERSION_1_12_0, ext_zfinx),
ISA_EXT_DATA_ENTRY(zdinx, PRIV_VERSION_1_12_0, ext_zdinx),
ISA_EXT_DATA_ENTRY(zca, PRIV_VERSION_1_12_0, ext_zca),
ISA_EXT_DATA_ENTRY(zcb, PRIV_VERSION_1_12_0, ext_zcb),
ISA_EXT_DATA_ENTRY(zcf, PRIV_VERSION_1_12_0, ext_zcf),
ISA_EXT_DATA_ENTRY(zcd, PRIV_VERSION_1_12_0, ext_zcd),
ISA_EXT_DATA_ENTRY(zce, PRIV_VERSION_1_12_0, ext_zce),
ISA_EXT_DATA_ENTRY(zcmp, PRIV_VERSION_1_12_0, ext_zcmp),
ISA_EXT_DATA_ENTRY(zcmt, PRIV_VERSION_1_12_0, ext_zcmt),
ISA_EXT_DATA_ENTRY(zba, PRIV_VERSION_1_12_0, ext_zba),
ISA_EXT_DATA_ENTRY(zbb, PRIV_VERSION_1_12_0, ext_zbb),
ISA_EXT_DATA_ENTRY(zbc, PRIV_VERSION_1_12_0, ext_zbc),
ISA_EXT_DATA_ENTRY(zbkb, PRIV_VERSION_1_12_0, ext_zbkb),
ISA_EXT_DATA_ENTRY(zbkc, PRIV_VERSION_1_12_0, ext_zbkc),
ISA_EXT_DATA_ENTRY(zbkx, PRIV_VERSION_1_12_0, ext_zbkx),
ISA_EXT_DATA_ENTRY(zbs, PRIV_VERSION_1_12_0, ext_zbs),
ISA_EXT_DATA_ENTRY(zk, PRIV_VERSION_1_12_0, ext_zk),
ISA_EXT_DATA_ENTRY(zkn, PRIV_VERSION_1_12_0, ext_zkn),
ISA_EXT_DATA_ENTRY(zknd, PRIV_VERSION_1_12_0, ext_zknd),
ISA_EXT_DATA_ENTRY(zkne, PRIV_VERSION_1_12_0, ext_zkne),
ISA_EXT_DATA_ENTRY(zknh, PRIV_VERSION_1_12_0, ext_zknh),
ISA_EXT_DATA_ENTRY(zkr, PRIV_VERSION_1_12_0, ext_zkr),
ISA_EXT_DATA_ENTRY(zks, PRIV_VERSION_1_12_0, ext_zks),
ISA_EXT_DATA_ENTRY(zksed, PRIV_VERSION_1_12_0, ext_zksed),
ISA_EXT_DATA_ENTRY(zksh, PRIV_VERSION_1_12_0, ext_zksh),
ISA_EXT_DATA_ENTRY(zkt, PRIV_VERSION_1_12_0, ext_zkt),
ISA_EXT_DATA_ENTRY(zvbb, PRIV_VERSION_1_12_0, ext_zvbb),
ISA_EXT_DATA_ENTRY(zvbc, PRIV_VERSION_1_12_0, ext_zvbc),
ISA_EXT_DATA_ENTRY(zve32f, PRIV_VERSION_1_10_0, ext_zve32f),
ISA_EXT_DATA_ENTRY(zve64f, PRIV_VERSION_1_10_0, ext_zve64f),
ISA_EXT_DATA_ENTRY(zve64d, PRIV_VERSION_1_10_0, ext_zve64d),
ISA_EXT_DATA_ENTRY(zvfbfmin, PRIV_VERSION_1_12_0, ext_zvfbfmin),
ISA_EXT_DATA_ENTRY(zvfbfwma, PRIV_VERSION_1_12_0, ext_zvfbfwma),
ISA_EXT_DATA_ENTRY(zvfh, PRIV_VERSION_1_12_0, ext_zvfh),
ISA_EXT_DATA_ENTRY(zvfhmin, PRIV_VERSION_1_12_0, ext_zvfhmin),
ISA_EXT_DATA_ENTRY(zvkb, PRIV_VERSION_1_12_0, ext_zvkb),
ISA_EXT_DATA_ENTRY(zvkg, PRIV_VERSION_1_12_0, ext_zvkg),
ISA_EXT_DATA_ENTRY(zvkn, PRIV_VERSION_1_12_0, ext_zvkn),
ISA_EXT_DATA_ENTRY(zvknc, PRIV_VERSION_1_12_0, ext_zvknc),
ISA_EXT_DATA_ENTRY(zvkned, PRIV_VERSION_1_12_0, ext_zvkned),
ISA_EXT_DATA_ENTRY(zvkng, PRIV_VERSION_1_12_0, ext_zvkng),
ISA_EXT_DATA_ENTRY(zvknha, PRIV_VERSION_1_12_0, ext_zvknha),
ISA_EXT_DATA_ENTRY(zvknhb, PRIV_VERSION_1_12_0, ext_zvknhb),
ISA_EXT_DATA_ENTRY(zvks, PRIV_VERSION_1_12_0, ext_zvks),
ISA_EXT_DATA_ENTRY(zvksc, PRIV_VERSION_1_12_0, ext_zvksc),
ISA_EXT_DATA_ENTRY(zvksed, PRIV_VERSION_1_12_0, ext_zvksed),
ISA_EXT_DATA_ENTRY(zvksg, PRIV_VERSION_1_12_0, ext_zvksg),
ISA_EXT_DATA_ENTRY(zvksh, PRIV_VERSION_1_12_0, ext_zvksh),
ISA_EXT_DATA_ENTRY(zvkt, PRIV_VERSION_1_12_0, ext_zvkt),
ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
ISA_EXT_DATA_ENTRY(sscofpmf, PRIV_VERSION_1_12_0, ext_sscofpmf),
ISA_EXT_DATA_ENTRY(sstc, PRIV_VERSION_1_12_0, ext_sstc),
ISA_EXT_DATA_ENTRY(svadu, PRIV_VERSION_1_12_0, ext_svadu),
ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
ISA_EXT_DATA_ENTRY(xtheadcmo, PRIV_VERSION_1_11_0, ext_xtheadcmo),
ISA_EXT_DATA_ENTRY(xtheadcondmov, PRIV_VERSION_1_11_0, ext_xtheadcondmov),
ISA_EXT_DATA_ENTRY(xtheadfmemidx, PRIV_VERSION_1_11_0, ext_xtheadfmemidx),
ISA_EXT_DATA_ENTRY(xtheadfmv, PRIV_VERSION_1_11_0, ext_xtheadfmv),
ISA_EXT_DATA_ENTRY(xtheadmac, PRIV_VERSION_1_11_0, ext_xtheadmac),
ISA_EXT_DATA_ENTRY(xtheadmemidx, PRIV_VERSION_1_11_0, ext_xtheadmemidx),
ISA_EXT_DATA_ENTRY(xtheadmempair, PRIV_VERSION_1_11_0, ext_xtheadmempair),
ISA_EXT_DATA_ENTRY(xtheadsync, PRIV_VERSION_1_11_0, ext_xtheadsync),
ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps),
DEFINE_PROP_END_OF_LIST(),
};
bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset)
{
bool *ext_enabled = (void *)&cpu->cfg + ext_offset;
return *ext_enabled;
}
void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en)
{
bool *ext_enabled = (void *)&cpu->cfg + ext_offset;
*ext_enabled = en;
}
bool riscv_cpu_is_vendor(Object *cpu_obj)
{
return object_dynamic_cast(cpu_obj, TYPE_RISCV_VENDOR_CPU) != NULL;
}
const char * const riscv_int_regnames[] = {
"x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1",
"x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3",
"x14/a4", "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3", "x20/s4",
"x21/s5", "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11",
"x28/t3", "x29/t4", "x30/t5", "x31/t6"
};
const char * const riscv_int_regnamesh[] = {
"x0h/zeroh", "x1h/rah", "x2h/sph", "x3h/gph", "x4h/tph", "x5h/t0h",
"x6h/t1h", "x7h/t2h", "x8h/s0h", "x9h/s1h", "x10h/a0h", "x11h/a1h",
"x12h/a2h", "x13h/a3h", "x14h/a4h", "x15h/a5h", "x16h/a6h", "x17h/a7h",
"x18h/s2h", "x19h/s3h", "x20h/s4h", "x21h/s5h", "x22h/s6h", "x23h/s7h",
"x24h/s8h", "x25h/s9h", "x26h/s10h", "x27h/s11h", "x28h/t3h", "x29h/t4h",
"x30h/t5h", "x31h/t6h"
};
const char * const riscv_fpr_regnames[] = {
"f0/ft0", "f1/ft1", "f2/ft2", "f3/ft3", "f4/ft4", "f5/ft5",
"f6/ft6", "f7/ft7", "f8/fs0", "f9/fs1", "f10/fa0", "f11/fa1",
"f12/fa2", "f13/fa3", "f14/fa4", "f15/fa5", "f16/fa6", "f17/fa7",
"f18/fs2", "f19/fs3", "f20/fs4", "f21/fs5", "f22/fs6", "f23/fs7",
"f24/fs8", "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9",
"f30/ft10", "f31/ft11"
};
const char * const riscv_rvv_regnames[] = {
"v0", "v1", "v2", "v3", "v4", "v5", "v6",
"v7", "v8", "v9", "v10", "v11", "v12", "v13",
"v14", "v15", "v16", "v17", "v18", "v19", "v20",
"v21", "v22", "v23", "v24", "v25", "v26", "v27",
"v28", "v29", "v30", "v31"
};
static const char * const riscv_excp_names[] = {
"misaligned_fetch",
"fault_fetch",
"illegal_instruction",
"breakpoint",
"misaligned_load",
"fault_load",
"misaligned_store",
"fault_store",
"user_ecall",
"supervisor_ecall",
"hypervisor_ecall",
"machine_ecall",
"exec_page_fault",
"load_page_fault",
"reserved",
"store_page_fault",
"reserved",
"reserved",
"reserved",
"reserved",
"guest_exec_page_fault",
"guest_load_page_fault",
"reserved",
"guest_store_page_fault",
};
static const char * const riscv_intr_names[] = {
"u_software",
"s_software",
"vs_software",
"m_software",
"u_timer",
"s_timer",
"vs_timer",
"m_timer",
"u_external",
"s_external",
"vs_external",
"m_external",
"reserved",
"reserved",
"reserved",
"reserved"
};
const char *riscv_cpu_get_trap_name(target_ulong cause, bool async)
{
if (async) {
return (cause < ARRAY_SIZE(riscv_intr_names)) ?
riscv_intr_names[cause] : "(unknown)";
} else {
return (cause < ARRAY_SIZE(riscv_excp_names)) ?
riscv_excp_names[cause] : "(unknown)";
}
}
void riscv_cpu_set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext)
{
env->misa_mxl_max = env->misa_mxl = mxl;
env->misa_ext_mask = env->misa_ext = ext;
}
#ifndef CONFIG_USER_ONLY
static uint8_t satp_mode_from_str(const char *satp_mode_str)
{
if (!strncmp(satp_mode_str, "mbare", 5)) {
return VM_1_10_MBARE;
}
if (!strncmp(satp_mode_str, "sv32", 4)) {
return VM_1_10_SV32;
}
if (!strncmp(satp_mode_str, "sv39", 4)) {
return VM_1_10_SV39;
}
if (!strncmp(satp_mode_str, "sv48", 4)) {
return VM_1_10_SV48;
}
if (!strncmp(satp_mode_str, "sv57", 4)) {
return VM_1_10_SV57;
}
if (!strncmp(satp_mode_str, "sv64", 4)) {
return VM_1_10_SV64;
}
g_assert_not_reached();
}
uint8_t satp_mode_max_from_map(uint32_t map)
{
/*
* 'map = 0' will make us return (31 - 32), which C will
* happily overflow to UINT_MAX. There's no good result to
* return if 'map = 0' (e.g. returning 0 will be ambiguous
* with the result for 'map = 1').
*
* Assert out if map = 0. Callers will have to deal with
* it outside of this function.
*/
g_assert(map > 0);
/* map here has at least one bit set, so no problem with clz */
return 31 - __builtin_clz(map);
}
const char *satp_mode_str(uint8_t satp_mode, bool is_32_bit)
{
if (is_32_bit) {
switch (satp_mode) {
case VM_1_10_SV32:
return "sv32";
case VM_1_10_MBARE:
return "none";
}
} else {
switch (satp_mode) {
case VM_1_10_SV64:
return "sv64";
case VM_1_10_SV57:
return "sv57";
case VM_1_10_SV48:
return "sv48";
case VM_1_10_SV39:
return "sv39";
case VM_1_10_MBARE:
return "none";
}
}
g_assert_not_reached();
}
static void set_satp_mode_max_supported(RISCVCPU *cpu,
uint8_t satp_mode)
{
bool rv32 = riscv_cpu_mxl(&cpu->env) == MXL_RV32;
const bool *valid_vm = rv32 ? valid_vm_1_10_32 : valid_vm_1_10_64;
for (int i = 0; i <= satp_mode; ++i) {
if (valid_vm[i]) {
cpu->cfg.satp_mode.supported |= (1 << i);
}
}
}
/* Set the satp mode to the max supported */
static void set_satp_mode_default_map(RISCVCPU *cpu)
{
/*
* Bare CPUs do not default to the max available.
* Users must set a valid satp_mode in the command
* line.
*/
if (object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_BARE_CPU) != NULL) {
warn_report("No satp mode set. Defaulting to 'bare'");
cpu->cfg.satp_mode.map = (1 << VM_1_10_MBARE);
return;
}
cpu->cfg.satp_mode.map = cpu->cfg.satp_mode.supported;
}
#endif
static void riscv_any_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
#if defined(TARGET_RISCV32)
riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU);
#elif defined(TARGET_RISCV64)
riscv_cpu_set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU);
#endif
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj),
riscv_cpu_mxl(&RISCV_CPU(obj)->env) == MXL_RV32 ?
VM_1_10_SV32 : VM_1_10_SV57);
#endif
env->priv_ver = PRIV_VERSION_LATEST;
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
}
static void riscv_max_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
RISCVMXL mlx = MXL_RV64;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
#ifdef TARGET_RISCV32
mlx = MXL_RV32;
#endif
riscv_cpu_set_misa(env, mlx, 0);
env->priv_ver = PRIV_VERSION_LATEST;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), mlx == MXL_RV32 ?
VM_1_10_SV32 : VM_1_10_SV57);
#endif
}
#if defined(TARGET_RISCV64)
static void rv64_base_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
/* We set this in the realise function */
riscv_cpu_set_misa(env, MXL_RV64, 0);
/* Set latest version of privileged specification */
env->priv_ver = PRIV_VERSION_LATEST;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV57);
#endif
}
static void rv64_sifive_u_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
riscv_cpu_set_misa(env, MXL_RV64,
RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
env->priv_ver = PRIV_VERSION_1_10_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV39);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
}
static void rv64_sifive_e_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU);
env->priv_ver = PRIV_VERSION_1_10_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.pmp = true;
}
static void rv64_thead_c906_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU);
env->priv_ver = PRIV_VERSION_1_11_0;
cpu->cfg.ext_zfa = true;
cpu->cfg.ext_zfh = true;
cpu->cfg.mmu = true;
cpu->cfg.ext_xtheadba = true;
cpu->cfg.ext_xtheadbb = true;
cpu->cfg.ext_xtheadbs = true;
cpu->cfg.ext_xtheadcmo = true;
cpu->cfg.ext_xtheadcondmov = true;
cpu->cfg.ext_xtheadfmemidx = true;
cpu->cfg.ext_xtheadmac = true;
cpu->cfg.ext_xtheadmemidx = true;
cpu->cfg.ext_xtheadmempair = true;
cpu->cfg.ext_xtheadsync = true;
cpu->cfg.mvendorid = THEAD_VENDOR_ID;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_SV39);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.pmp = true;
}
static void rv64_veyron_v1_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU | RVH);
env->priv_ver = PRIV_VERSION_1_12_0;
/* Enable ISA extensions */
cpu->cfg.mmu = true;
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.pmp = true;
cpu->cfg.ext_zicbom = true;
cpu->cfg.cbom_blocksize = 64;
cpu->cfg.cboz_blocksize = 64;
cpu->cfg.ext_zicboz = true;
cpu->cfg.ext_smaia = true;
cpu->cfg.ext_ssaia = true;
cpu->cfg.ext_sscofpmf = true;
cpu->cfg.ext_sstc = true;
cpu->cfg.ext_svinval = true;
cpu->cfg.ext_svnapot = true;
cpu->cfg.ext_svpbmt = true;
cpu->cfg.ext_smstateen = true;
cpu->cfg.ext_zba = true;
cpu->cfg.ext_zbb = true;
cpu->cfg.ext_zbc = true;
cpu->cfg.ext_zbs = true;
cpu->cfg.ext_XVentanaCondOps = true;
cpu->cfg.mvendorid = VEYRON_V1_MVENDORID;
cpu->cfg.marchid = VEYRON_V1_MARCHID;
cpu->cfg.mimpid = VEYRON_V1_MIMPID;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_SV48);
#endif
}
static void rv128_base_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
if (qemu_tcg_mttcg_enabled()) {
/* Missing 128-bit aligned atomics */
error_report("128-bit RISC-V currently does not work with Multi "
"Threaded TCG. Please use: -accel tcg,thread=single");
exit(EXIT_FAILURE);
}
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
/* We set this in the realise function */
riscv_cpu_set_misa(env, MXL_RV128, 0);
/* Set latest version of privileged specification */
env->priv_ver = PRIV_VERSION_LATEST;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV57);
#endif
}
static void rv64i_bare_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
riscv_cpu_set_misa(env, MXL_RV64, RVI);
/* Remove the defaults from the parent class */
RISCV_CPU(obj)->cfg.ext_zicntr = false;
RISCV_CPU(obj)->cfg.ext_zihpm = false;
/* Set to QEMU's first supported priv version */
env->priv_ver = PRIV_VERSION_1_10_0;
/*
* Support all available satp_mode settings. The default
* value will be set to MBARE if the user doesn't set
* satp_mode manually (see set_satp_mode_default()).
*/
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV64);
#endif
}
#else
static void rv32_base_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
/* We set this in the realise function */
riscv_cpu_set_misa(env, MXL_RV32, 0);
/* Set latest version of privileged specification */
env->priv_ver = PRIV_VERSION_LATEST;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV32);
#endif
}
static void rv32_sifive_u_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
riscv_cpu_set_misa(env, MXL_RV32,
RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
env->priv_ver = PRIV_VERSION_1_10_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV32);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
}
static void rv32_sifive_e_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU);
env->priv_ver = PRIV_VERSION_1_10_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.pmp = true;
}
static void rv32_ibex_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU);
env->priv_ver = PRIV_VERSION_1_12_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.pmp = true;
cpu->cfg.ext_smepmp = true;
}
static void rv32_imafcu_nommu_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
RISCVCPU *cpu = RISCV_CPU(obj);
riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU);
env->priv_ver = PRIV_VERSION_1_10_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
#endif
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_zifencei = true;
cpu->cfg.ext_zicsr = true;
cpu->cfg.pmp = true;
}
#endif
static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
char **cpuname;
cpuname = g_strsplit(cpu_model, ",", 1);
typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]);
oc = object_class_by_name(typename);
g_strfreev(cpuname);
g_free(typename);
return oc;
}
char *riscv_cpu_get_name(RISCVCPU *cpu)
{
RISCVCPUClass *rcc = RISCV_CPU_GET_CLASS(cpu);
const char *typename = object_class_get_name(OBJECT_CLASS(rcc));
g_assert(g_str_has_suffix(typename, RISCV_CPU_TYPE_SUFFIX));
return cpu_model_from_type(typename);
}
static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
int i, j;
uint8_t *p;
#if !defined(CONFIG_USER_ONLY)
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s %d\n", "V = ", env->virt_enabled);
}
#endif
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc ", env->pc);
#ifndef CONFIG_USER_ONLY
{
static const int dump_csrs[] = {
CSR_MHARTID,
CSR_MSTATUS,
CSR_MSTATUSH,
/*
* CSR_SSTATUS is intentionally omitted here as its value
* can be figured out by looking at CSR_MSTATUS
*/
CSR_HSTATUS,
CSR_VSSTATUS,
CSR_MIP,
CSR_MIE,
CSR_MIDELEG,
CSR_HIDELEG,
CSR_MEDELEG,
CSR_HEDELEG,
CSR_MTVEC,
CSR_STVEC,
CSR_VSTVEC,
CSR_MEPC,
CSR_SEPC,
CSR_VSEPC,
CSR_MCAUSE,
CSR_SCAUSE,
CSR_VSCAUSE,
CSR_MTVAL,
CSR_STVAL,
CSR_HTVAL,
CSR_MTVAL2,
CSR_MSCRATCH,
CSR_SSCRATCH,
CSR_SATP,
CSR_MMTE,
CSR_UPMBASE,
CSR_UPMMASK,
CSR_SPMBASE,
CSR_SPMMASK,
CSR_MPMBASE,
CSR_MPMMASK,
};
for (i = 0; i < ARRAY_SIZE(dump_csrs); ++i) {
int csrno = dump_csrs[i];
target_ulong val = 0;
RISCVException res = riscv_csrrw_debug(env, csrno, &val, 0, 0);
/*
* Rely on the smode, hmode, etc, predicates within csr.c
* to do the filtering of the registers that are present.
*/
if (res == RISCV_EXCP_NONE) {
qemu_fprintf(f, " %-8s " TARGET_FMT_lx "\n",
csr_ops[csrno].name, val);
}
}
}
#endif
for (i = 0; i < 32; i++) {
qemu_fprintf(f, " %-8s " TARGET_FMT_lx,
riscv_int_regnames[i], env->gpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
if (flags & CPU_DUMP_FPU) {
for (i = 0; i < 32; i++) {
qemu_fprintf(f, " %-8s %016" PRIx64,
riscv_fpr_regnames[i], env->fpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
}
if (riscv_has_ext(env, RVV) && (flags & CPU_DUMP_VPU)) {
static const int dump_rvv_csrs[] = {
CSR_VSTART,
CSR_VXSAT,
CSR_VXRM,
CSR_VCSR,
CSR_VL,
CSR_VTYPE,
CSR_VLENB,
};
for (i = 0; i < ARRAY_SIZE(dump_rvv_csrs); ++i) {
int csrno = dump_rvv_csrs[i];
target_ulong val = 0;
RISCVException res = riscv_csrrw_debug(env, csrno, &val, 0, 0);
/*
* Rely on the smode, hmode, etc, predicates within csr.c
* to do the filtering of the registers that are present.
*/
if (res == RISCV_EXCP_NONE) {
qemu_fprintf(f, " %-8s " TARGET_FMT_lx "\n",
csr_ops[csrno].name, val);
}
}
uint16_t vlenb = cpu->cfg.vlenb;
for (i = 0; i < 32; i++) {
qemu_fprintf(f, " %-8s ", riscv_rvv_regnames[i]);
p = (uint8_t *)env->vreg;
for (j = vlenb - 1 ; j >= 0; j--) {
qemu_fprintf(f, "%02x", *(p + i * vlenb + BYTE(j)));
}
qemu_fprintf(f, "\n");
}
}
}
static void riscv_cpu_set_pc(CPUState *cs, vaddr value)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
if (env->xl == MXL_RV32) {
env->pc = (int32_t)value;
} else {
env->pc = value;
}
}
static vaddr riscv_cpu_get_pc(CPUState *cs)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
/* Match cpu_get_tb_cpu_state. */
if (env->xl == MXL_RV32) {
return env->pc & UINT32_MAX;
}
return env->pc;
}
static bool riscv_cpu_has_work(CPUState *cs)
{
#ifndef CONFIG_USER_ONLY
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
/*
* Definition of the WFI instruction requires it to ignore the privilege
* mode and delegation registers, but respect individual enables
*/
return riscv_cpu_all_pending(env) != 0 ||
riscv_cpu_sirq_pending(env) != RISCV_EXCP_NONE ||
riscv_cpu_vsirq_pending(env) != RISCV_EXCP_NONE;
#else
return true;
#endif
}
static int riscv_cpu_mmu_index(CPUState *cs, bool ifetch)
{
return riscv_env_mmu_index(cpu_env(cs), ifetch);
}
static void riscv_cpu_reset_hold(Object *obj)
{
#ifndef CONFIG_USER_ONLY
uint8_t iprio;
int i, irq, rdzero;
#endif
CPUState *cs = CPU(obj);
RISCVCPU *cpu = RISCV_CPU(cs);
RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
CPURISCVState *env = &cpu->env;
if (mcc->parent_phases.hold) {
mcc->parent_phases.hold(obj);
}
#ifndef CONFIG_USER_ONLY
env->misa_mxl = env->misa_mxl_max;
env->priv = PRV_M;
env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
if (env->misa_mxl > MXL_RV32) {
/*
* The reset status of SXL/UXL is undefined, but mstatus is WARL
* and we must ensure that the value after init is valid for read.
*/
env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl);
env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
if (riscv_has_ext(env, RVH)) {
env->vsstatus = set_field(env->vsstatus,
MSTATUS64_SXL, env->misa_mxl);
env->vsstatus = set_field(env->vsstatus,
MSTATUS64_UXL, env->misa_mxl);
env->mstatus_hs = set_field(env->mstatus_hs,
MSTATUS64_SXL, env->misa_mxl);
env->mstatus_hs = set_field(env->mstatus_hs,
MSTATUS64_UXL, env->misa_mxl);
}
}
env->mcause = 0;
env->miclaim = MIP_SGEIP;
env->pc = env->resetvec;
env->bins = 0;
env->two_stage_lookup = false;
env->menvcfg = (cpu->cfg.ext_svpbmt ? MENVCFG_PBMTE : 0) |
(cpu->cfg.ext_svadu ? MENVCFG_ADUE : 0);
env->henvcfg = (cpu->cfg.ext_svpbmt ? HENVCFG_PBMTE : 0) |
(cpu->cfg.ext_svadu ? HENVCFG_ADUE : 0);
/* Initialized default priorities of local interrupts. */
for (i = 0; i < ARRAY_SIZE(env->miprio); i++) {
iprio = riscv_cpu_default_priority(i);
env->miprio[i] = (i == IRQ_M_EXT) ? 0 : iprio;
env->siprio[i] = (i == IRQ_S_EXT) ? 0 : iprio;
env->hviprio[i] = 0;
}
i = 0;
while (!riscv_cpu_hviprio_index2irq(i, &irq, &rdzero)) {
if (!rdzero) {
env->hviprio[irq] = env->miprio[irq];
}
i++;
}
/* mmte is supposed to have pm.current hardwired to 1 */
env->mmte |= (EXT_STATUS_INITIAL | MMTE_M_PM_CURRENT);
/*
* Bits 10, 6, 2 and 12 of mideleg are read only 1 when the Hypervisor
* extension is enabled.
*/
if (riscv_has_ext(env, RVH)) {
env->mideleg |= HS_MODE_INTERRUPTS;
}
/*
* Clear mseccfg and unlock all the PMP entries upon reset.
* This is allowed as per the priv and smepmp specifications
* and is needed to clear stale entries across reboots.
*/
if (riscv_cpu_cfg(env)->ext_smepmp) {
env->mseccfg = 0;
}
pmp_unlock_entries(env);
#endif
env->xl = riscv_cpu_mxl(env);
riscv_cpu_update_mask(env);
cs->exception_index = RISCV_EXCP_NONE;
env->load_res = -1;
set_default_nan_mode(1, &env->fp_status);
#ifndef CONFIG_USER_ONLY
if (cpu->cfg.debug) {
riscv_trigger_reset_hold(env);
}
if (kvm_enabled()) {
kvm_riscv_reset_vcpu(cpu);
}
#endif
}
static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
{
RISCVCPU *cpu = RISCV_CPU(s);
CPURISCVState *env = &cpu->env;
info->target_info = &cpu->cfg;
switch (env->xl) {
case MXL_RV32:
info->print_insn = print_insn_riscv32;
break;
case MXL_RV64:
info->print_insn = print_insn_riscv64;
break;
case MXL_RV128:
info->print_insn = print_insn_riscv128;
break;
default:
g_assert_not_reached();
}
}
#ifndef CONFIG_USER_ONLY
static void riscv_cpu_satp_mode_finalize(RISCVCPU *cpu, Error **errp)
{
bool rv32 = riscv_cpu_is_32bit(cpu);
uint8_t satp_mode_map_max, satp_mode_supported_max;
/* The CPU wants the OS to decide which satp mode to use */
if (cpu->cfg.satp_mode.supported == 0) {
return;
}
satp_mode_supported_max =
satp_mode_max_from_map(cpu->cfg.satp_mode.supported);
if (cpu->cfg.satp_mode.map == 0) {
if (cpu->cfg.satp_mode.init == 0) {
/* If unset by the user, we fallback to the default satp mode. */
set_satp_mode_default_map(cpu);
} else {
/*
* Find the lowest level that was disabled and then enable the
* first valid level below which can be found in
* valid_vm_1_10_32/64.
*/
for (int i = 1; i < 16; ++i) {
if ((cpu->cfg.satp_mode.init & (1 << i)) &&
(cpu->cfg.satp_mode.supported & (1 << i))) {
for (int j = i - 1; j >= 0; --j) {
if (cpu->cfg.satp_mode.supported & (1 << j)) {
cpu->cfg.satp_mode.map |= (1 << j);
break;
}
}
break;
}
}
}
}
satp_mode_map_max = satp_mode_max_from_map(cpu->cfg.satp_mode.map);
/* Make sure the user asked for a supported configuration (HW and qemu) */
if (satp_mode_map_max > satp_mode_supported_max) {
error_setg(errp, "satp_mode %s is higher than hw max capability %s",
satp_mode_str(satp_mode_map_max, rv32),
satp_mode_str(satp_mode_supported_max, rv32));
return;
}
/*
* Make sure the user did not ask for an invalid configuration as per
* the specification.
*/
if (!rv32) {
for (int i = satp_mode_map_max - 1; i >= 0; --i) {
if (!(cpu->cfg.satp_mode.map & (1 << i)) &&
(cpu->cfg.satp_mode.init & (1 << i)) &&
(cpu->cfg.satp_mode.supported & (1 << i))) {
error_setg(errp, "cannot disable %s satp mode if %s "
"is enabled", satp_mode_str(i, false),
satp_mode_str(satp_mode_map_max, false));
return;
}
}
}
/* Finally expand the map so that all valid modes are set */
for (int i = satp_mode_map_max - 1; i >= 0; --i) {
if (cpu->cfg.satp_mode.supported & (1 << i)) {
cpu->cfg.satp_mode.map |= (1 << i);
}
}
}
#endif
void riscv_cpu_finalize_features(RISCVCPU *cpu, Error **errp)
{
Error *local_err = NULL;
#ifndef CONFIG_USER_ONLY
riscv_cpu_satp_mode_finalize(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
#endif
if (tcg_enabled()) {
riscv_tcg_cpu_finalize_features(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
} else if (kvm_enabled()) {
riscv_kvm_cpu_finalize_features(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
}
}
static void riscv_cpu_realize(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
RISCVCPU *cpu = RISCV_CPU(dev);
RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
Error *local_err = NULL;
if (object_dynamic_cast(OBJECT(dev), TYPE_RISCV_CPU_ANY) != NULL) {
warn_report("The 'any' CPU is deprecated and will be "
"removed in the future.");
}
cpu_exec_realizefn(cs, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
riscv_cpu_finalize_features(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
riscv_cpu_register_gdb_regs_for_features(cs);
#ifndef CONFIG_USER_ONLY
if (cpu->cfg.debug) {
riscv_trigger_realize(&cpu->env);
}
#endif
qemu_init_vcpu(cs);
cpu_reset(cs);
mcc->parent_realize(dev, errp);
}
bool riscv_cpu_accelerator_compatible(RISCVCPU *cpu)
{
if (tcg_enabled()) {
return riscv_cpu_tcg_compatible(cpu);
}
return true;
}
#ifndef CONFIG_USER_ONLY
static void cpu_riscv_get_satp(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVSATPMap *satp_map = opaque;
uint8_t satp = satp_mode_from_str(name);
bool value;
value = satp_map->map & (1 << satp);
visit_type_bool(v, name, &value, errp);
}
static void cpu_riscv_set_satp(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVSATPMap *satp_map = opaque;
uint8_t satp = satp_mode_from_str(name);
bool value;
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
satp_map->map = deposit32(satp_map->map, satp, 1, value);
satp_map->init |= 1 << satp;
}
void riscv_add_satp_mode_properties(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
if (cpu->env.misa_mxl == MXL_RV32) {
object_property_add(obj, "sv32", "bool", cpu_riscv_get_satp,
cpu_riscv_set_satp, NULL, &cpu->cfg.satp_mode);
} else {
object_property_add(obj, "sv39", "bool", cpu_riscv_get_satp,
cpu_riscv_set_satp, NULL, &cpu->cfg.satp_mode);
object_property_add(obj, "sv48", "bool", cpu_riscv_get_satp,
cpu_riscv_set_satp, NULL, &cpu->cfg.satp_mode);
object_property_add(obj, "sv57", "bool", cpu_riscv_get_satp,
cpu_riscv_set_satp, NULL, &cpu->cfg.satp_mode);
object_property_add(obj, "sv64", "bool", cpu_riscv_get_satp,
cpu_riscv_set_satp, NULL, &cpu->cfg.satp_mode);
}
}
static void riscv_cpu_set_irq(void *opaque, int irq, int level)
{
RISCVCPU *cpu = RISCV_CPU(opaque);
CPURISCVState *env = &cpu->env;
if (irq < IRQ_LOCAL_MAX) {
switch (irq) {
case IRQ_U_SOFT:
case IRQ_S_SOFT:
case IRQ_VS_SOFT:
case IRQ_M_SOFT:
case IRQ_U_TIMER:
case IRQ_S_TIMER:
case IRQ_VS_TIMER:
case IRQ_M_TIMER:
case IRQ_U_EXT:
case IRQ_VS_EXT:
case IRQ_M_EXT:
if (kvm_enabled()) {
kvm_riscv_set_irq(cpu, irq, level);
} else {
riscv_cpu_update_mip(env, 1 << irq, BOOL_TO_MASK(level));
}
break;
case IRQ_S_EXT:
if (kvm_enabled()) {
kvm_riscv_set_irq(cpu, irq, level);
} else {
env->external_seip = level;
riscv_cpu_update_mip(env, 1 << irq,
BOOL_TO_MASK(level | env->software_seip));
}
break;
default:
g_assert_not_reached();
}
} else if (irq < (IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX)) {
/* Require H-extension for handling guest local interrupts */
if (!riscv_has_ext(env, RVH)) {
g_assert_not_reached();
}
/* Compute bit position in HGEIP CSR */
irq = irq - IRQ_LOCAL_MAX + 1;
if (env->geilen < irq) {
g_assert_not_reached();
}
/* Update HGEIP CSR */
env->hgeip &= ~((target_ulong)1 << irq);
if (level) {
env->hgeip |= (target_ulong)1 << irq;
}
/* Update mip.SGEIP bit */
riscv_cpu_update_mip(env, MIP_SGEIP,
BOOL_TO_MASK(!!(env->hgeie & env->hgeip)));
} else {
g_assert_not_reached();
}
}
#endif /* CONFIG_USER_ONLY */
static bool riscv_cpu_is_dynamic(Object *cpu_obj)
{
return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL;
}
static void riscv_cpu_post_init(Object *obj)
{
accel_cpu_instance_init(CPU(obj));
}
static void riscv_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
#ifndef CONFIG_USER_ONLY
qdev_init_gpio_in(DEVICE(obj), riscv_cpu_set_irq,
IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX);
#endif /* CONFIG_USER_ONLY */
general_user_opts = g_hash_table_new(g_str_hash, g_str_equal);
/*
* The timer and performance counters extensions were supported
* in QEMU before they were added as discrete extensions in the
* ISA. To keep compatibility we'll always default them to 'true'
* for all CPUs. Each accelerator will decide what to do when
* users disable them.
*/
RISCV_CPU(obj)->cfg.ext_zicntr = true;
RISCV_CPU(obj)->cfg.ext_zihpm = true;
/* Default values for non-bool cpu properties */
cpu->cfg.pmu_mask = MAKE_64BIT_MASK(3, 16);
cpu->cfg.vlen = 128;
cpu->cfg.vlenb = 128 >> 3;
cpu->cfg.elen = 64;
cpu->cfg.cbom_blocksize = 64;
cpu->cfg.cbop_blocksize = 64;
cpu->cfg.cboz_blocksize = 64;
cpu->env.vext_ver = VEXT_VERSION_1_00_0;
}
typedef struct misa_ext_info {
const char *name;
const char *description;
} MISAExtInfo;
#define MISA_INFO_IDX(_bit) \
__builtin_ctz(_bit)
#define MISA_EXT_INFO(_bit, _propname, _descr) \
[MISA_INFO_IDX(_bit)] = {.name = _propname, .description = _descr}
static const MISAExtInfo misa_ext_info_arr[] = {
MISA_EXT_INFO(RVA, "a", "Atomic instructions"),
MISA_EXT_INFO(RVC, "c", "Compressed instructions"),
MISA_EXT_INFO(RVD, "d", "Double-precision float point"),
MISA_EXT_INFO(RVF, "f", "Single-precision float point"),
MISA_EXT_INFO(RVI, "i", "Base integer instruction set"),
MISA_EXT_INFO(RVE, "e", "Base integer instruction set (embedded)"),
MISA_EXT_INFO(RVM, "m", "Integer multiplication and division"),
MISA_EXT_INFO(RVS, "s", "Supervisor-level instructions"),
MISA_EXT_INFO(RVU, "u", "User-level instructions"),
MISA_EXT_INFO(RVH, "h", "Hypervisor"),
MISA_EXT_INFO(RVJ, "x-j", "Dynamic translated languages"),
MISA_EXT_INFO(RVV, "v", "Vector operations"),
MISA_EXT_INFO(RVG, "g", "General purpose (IMAFD_Zicsr_Zifencei)"),
MISA_EXT_INFO(RVB, "x-b", "Bit manipulation (Zba_Zbb_Zbs)")
};
static int riscv_validate_misa_info_idx(uint32_t bit)
{
int idx;
/*
* Our lowest valid input (RVA) is 1 and
* __builtin_ctz() is UB with zero.
*/
g_assert(bit != 0);
idx = MISA_INFO_IDX(bit);
g_assert(idx < ARRAY_SIZE(misa_ext_info_arr));
return idx;
}
const char *riscv_get_misa_ext_name(uint32_t bit)
{
int idx = riscv_validate_misa_info_idx(bit);
const char *val = misa_ext_info_arr[idx].name;
g_assert(val != NULL);
return val;
}
const char *riscv_get_misa_ext_description(uint32_t bit)
{
int idx = riscv_validate_misa_info_idx(bit);
const char *val = misa_ext_info_arr[idx].description;
g_assert(val != NULL);
return val;
}
#define MULTI_EXT_CFG_BOOL(_name, _prop, _defval) \
{.name = _name, .offset = CPU_CFG_OFFSET(_prop), \
.enabled = _defval}
const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
/* Defaults for standard extensions */
MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false),
MULTI_EXT_CFG_BOOL("zifencei", ext_zifencei, true),
MULTI_EXT_CFG_BOOL("zicsr", ext_zicsr, true),
MULTI_EXT_CFG_BOOL("zihintntl", ext_zihintntl, true),
MULTI_EXT_CFG_BOOL("zihintpause", ext_zihintpause, true),
MULTI_EXT_CFG_BOOL("zacas", ext_zacas, false),
MULTI_EXT_CFG_BOOL("zawrs", ext_zawrs, true),
MULTI_EXT_CFG_BOOL("zfa", ext_zfa, true),
MULTI_EXT_CFG_BOOL("zfh", ext_zfh, false),
MULTI_EXT_CFG_BOOL("zfhmin", ext_zfhmin, false),
MULTI_EXT_CFG_BOOL("zve32f", ext_zve32f, false),
MULTI_EXT_CFG_BOOL("zve64f", ext_zve64f, false),
MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false),
MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true),
MULTI_EXT_CFG_BOOL("smepmp", ext_smepmp, false),
MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false),
MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true),
MULTI_EXT_CFG_BOOL("svinval", ext_svinval, false),
MULTI_EXT_CFG_BOOL("svnapot", ext_svnapot, false),
MULTI_EXT_CFG_BOOL("svpbmt", ext_svpbmt, false),
MULTI_EXT_CFG_BOOL("zicntr", ext_zicntr, true),
MULTI_EXT_CFG_BOOL("zihpm", ext_zihpm, true),
MULTI_EXT_CFG_BOOL("zba", ext_zba, true),
MULTI_EXT_CFG_BOOL("zbb", ext_zbb, true),
MULTI_EXT_CFG_BOOL("zbc", ext_zbc, true),
MULTI_EXT_CFG_BOOL("zbkb", ext_zbkb, false),
MULTI_EXT_CFG_BOOL("zbkc", ext_zbkc, false),
MULTI_EXT_CFG_BOOL("zbkx", ext_zbkx, false),
MULTI_EXT_CFG_BOOL("zbs", ext_zbs, true),
MULTI_EXT_CFG_BOOL("zk", ext_zk, false),
MULTI_EXT_CFG_BOOL("zkn", ext_zkn, false),
MULTI_EXT_CFG_BOOL("zknd", ext_zknd, false),
MULTI_EXT_CFG_BOOL("zkne", ext_zkne, false),
MULTI_EXT_CFG_BOOL("zknh", ext_zknh, false),
MULTI_EXT_CFG_BOOL("zkr", ext_zkr, false),
MULTI_EXT_CFG_BOOL("zks", ext_zks, false),
MULTI_EXT_CFG_BOOL("zksed", ext_zksed, false),
MULTI_EXT_CFG_BOOL("zksh", ext_zksh, false),
MULTI_EXT_CFG_BOOL("zkt", ext_zkt, false),
MULTI_EXT_CFG_BOOL("zdinx", ext_zdinx, false),
MULTI_EXT_CFG_BOOL("zfinx", ext_zfinx, false),
MULTI_EXT_CFG_BOOL("zhinx", ext_zhinx, false),
MULTI_EXT_CFG_BOOL("zhinxmin", ext_zhinxmin, false),
MULTI_EXT_CFG_BOOL("zicbom", ext_zicbom, true),
MULTI_EXT_CFG_BOOL("zicbop", ext_zicbop, true),
MULTI_EXT_CFG_BOOL("zicboz", ext_zicboz, true),
MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
MULTI_EXT_CFG_BOOL("zce", ext_zce, false),
MULTI_EXT_CFG_BOOL("zcf", ext_zcf, false),
MULTI_EXT_CFG_BOOL("zcmp", ext_zcmp, false),
MULTI_EXT_CFG_BOOL("zcmt", ext_zcmt, false),
MULTI_EXT_CFG_BOOL("zicond", ext_zicond, false),
/* Vector cryptography extensions */
MULTI_EXT_CFG_BOOL("zvbb", ext_zvbb, false),
MULTI_EXT_CFG_BOOL("zvbc", ext_zvbc, false),
MULTI_EXT_CFG_BOOL("zvkb", ext_zvkg, false),
MULTI_EXT_CFG_BOOL("zvkg", ext_zvkg, false),
MULTI_EXT_CFG_BOOL("zvkned", ext_zvkned, false),
MULTI_EXT_CFG_BOOL("zvknha", ext_zvknha, false),
MULTI_EXT_CFG_BOOL("zvknhb", ext_zvknhb, false),
MULTI_EXT_CFG_BOOL("zvksed", ext_zvksed, false),
MULTI_EXT_CFG_BOOL("zvksh", ext_zvksh, false),
MULTI_EXT_CFG_BOOL("zvkt", ext_zvkt, false),
MULTI_EXT_CFG_BOOL("zvkn", ext_zvkn, false),
MULTI_EXT_CFG_BOOL("zvknc", ext_zvknc, false),
MULTI_EXT_CFG_BOOL("zvkng", ext_zvkng, false),
MULTI_EXT_CFG_BOOL("zvks", ext_zvks, false),
MULTI_EXT_CFG_BOOL("zvksc", ext_zvksc, false),
MULTI_EXT_CFG_BOOL("zvksg", ext_zvksg, false),
DEFINE_PROP_END_OF_LIST(),
};
const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
MULTI_EXT_CFG_BOOL("xtheadba", ext_xtheadba, false),
MULTI_EXT_CFG_BOOL("xtheadbb", ext_xtheadbb, false),
MULTI_EXT_CFG_BOOL("xtheadbs", ext_xtheadbs, false),
MULTI_EXT_CFG_BOOL("xtheadcmo", ext_xtheadcmo, false),
MULTI_EXT_CFG_BOOL("xtheadcondmov", ext_xtheadcondmov, false),
MULTI_EXT_CFG_BOOL("xtheadfmemidx", ext_xtheadfmemidx, false),
MULTI_EXT_CFG_BOOL("xtheadfmv", ext_xtheadfmv, false),
MULTI_EXT_CFG_BOOL("xtheadmac", ext_xtheadmac, false),
MULTI_EXT_CFG_BOOL("xtheadmemidx", ext_xtheadmemidx, false),
MULTI_EXT_CFG_BOOL("xtheadmempair", ext_xtheadmempair, false),
MULTI_EXT_CFG_BOOL("xtheadsync", ext_xtheadsync, false),
MULTI_EXT_CFG_BOOL("xventanacondops", ext_XVentanaCondOps, false),
DEFINE_PROP_END_OF_LIST(),
};
/* These are experimental so mark with 'x-' */
const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false),
MULTI_EXT_CFG_BOOL("x-ssaia", ext_ssaia, false),
MULTI_EXT_CFG_BOOL("x-zvfh", ext_zvfh, false),
MULTI_EXT_CFG_BOOL("x-zvfhmin", ext_zvfhmin, false),
MULTI_EXT_CFG_BOOL("x-zfbfmin", ext_zfbfmin, false),
MULTI_EXT_CFG_BOOL("x-zvfbfmin", ext_zvfbfmin, false),
MULTI_EXT_CFG_BOOL("x-zvfbfwma", ext_zvfbfwma, false),
DEFINE_PROP_END_OF_LIST(),
};
const RISCVCPUMultiExtConfig riscv_cpu_named_features[] = {
MULTI_EXT_CFG_BOOL("svade", svade, true),
MULTI_EXT_CFG_BOOL("zic64b", zic64b, true),
DEFINE_PROP_END_OF_LIST(),
};
/* Deprecated entries marked for future removal */
const RISCVCPUMultiExtConfig riscv_cpu_deprecated_exts[] = {
MULTI_EXT_CFG_BOOL("Zifencei", ext_zifencei, true),
MULTI_EXT_CFG_BOOL("Zicsr", ext_zicsr, true),
MULTI_EXT_CFG_BOOL("Zihintntl", ext_zihintntl, true),
MULTI_EXT_CFG_BOOL("Zihintpause", ext_zihintpause, true),
MULTI_EXT_CFG_BOOL("Zawrs", ext_zawrs, true),
MULTI_EXT_CFG_BOOL("Zfa", ext_zfa, true),
MULTI_EXT_CFG_BOOL("Zfh", ext_zfh, false),
MULTI_EXT_CFG_BOOL("Zfhmin", ext_zfhmin, false),
MULTI_EXT_CFG_BOOL("Zve32f", ext_zve32f, false),
MULTI_EXT_CFG_BOOL("Zve64f", ext_zve64f, false),
MULTI_EXT_CFG_BOOL("Zve64d", ext_zve64d, false),
DEFINE_PROP_END_OF_LIST(),
};
static void cpu_set_prop_err(RISCVCPU *cpu, const char *propname,
Error **errp)
{
g_autofree char *cpuname = riscv_cpu_get_name(cpu);
error_setg(errp, "CPU '%s' does not allow changing the value of '%s'",
cpuname, propname);
}
static void prop_pmu_num_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint8_t pmu_num, curr_pmu_num;
uint32_t pmu_mask;
visit_type_uint8(v, name, &pmu_num, errp);
curr_pmu_num = ctpop32(cpu->cfg.pmu_mask);
if (pmu_num != curr_pmu_num && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, curr_pmu_num);
return;
}
if (pmu_num > (RV_MAX_MHPMCOUNTERS - 3)) {
error_setg(errp, "Number of counters exceeds maximum available");
return;
}
if (pmu_num == 0) {
pmu_mask = 0;
} else {
pmu_mask = MAKE_64BIT_MASK(3, pmu_num);
}
warn_report("\"pmu-num\" property is deprecated; use \"pmu-mask\"");
cpu->cfg.pmu_mask = pmu_mask;
cpu_option_add_user_setting("pmu-mask", pmu_mask);
}
static void prop_pmu_num_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint8_t pmu_num = ctpop32(cpu->cfg.pmu_mask);
visit_type_uint8(v, name, &pmu_num, errp);
}
static const PropertyInfo prop_pmu_num = {
.name = "pmu-num",
.get = prop_pmu_num_get,
.set = prop_pmu_num_set,
};
static void prop_pmu_mask_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint32_t value;
uint8_t pmu_num;
visit_type_uint32(v, name, &value, errp);
if (value != cpu->cfg.pmu_mask && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %x\n",
name, cpu->cfg.pmu_mask);
return;
}
pmu_num = ctpop32(value);
if (pmu_num > (RV_MAX_MHPMCOUNTERS - 3)) {
error_setg(errp, "Number of counters exceeds maximum available");
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.pmu_mask = value;
}
static void prop_pmu_mask_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint8_t pmu_mask = RISCV_CPU(obj)->cfg.pmu_mask;
visit_type_uint8(v, name, &pmu_mask, errp);
}
static const PropertyInfo prop_pmu_mask = {
.name = "pmu-mask",
.get = prop_pmu_mask_get,
.set = prop_pmu_mask_set,
};
static void prop_mmu_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
bool value;
visit_type_bool(v, name, &value, errp);
if (cpu->cfg.mmu != value && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, "mmu", errp);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.mmu = value;
}
static void prop_mmu_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool value = RISCV_CPU(obj)->cfg.mmu;
visit_type_bool(v, name, &value, errp);
}
static const PropertyInfo prop_mmu = {
.name = "mmu",
.get = prop_mmu_get,
.set = prop_mmu_set,
};
static void prop_pmp_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
bool value;
visit_type_bool(v, name, &value, errp);
if (cpu->cfg.pmp != value && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.pmp = value;
}
static void prop_pmp_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool value = RISCV_CPU(obj)->cfg.pmp;
visit_type_bool(v, name, &value, errp);
}
static const PropertyInfo prop_pmp = {
.name = "pmp",
.get = prop_pmp_get,
.set = prop_pmp_set,
};
static int priv_spec_from_str(const char *priv_spec_str)
{
int priv_version = -1;
if (!g_strcmp0(priv_spec_str, PRIV_VER_1_12_0_STR)) {
priv_version = PRIV_VERSION_1_12_0;
} else if (!g_strcmp0(priv_spec_str, PRIV_VER_1_11_0_STR)) {
priv_version = PRIV_VERSION_1_11_0;
} else if (!g_strcmp0(priv_spec_str, PRIV_VER_1_10_0_STR)) {
priv_version = PRIV_VERSION_1_10_0;
}
return priv_version;
}
static const char *priv_spec_to_str(int priv_version)
{
switch (priv_version) {
case PRIV_VERSION_1_10_0:
return PRIV_VER_1_10_0_STR;
case PRIV_VERSION_1_11_0:
return PRIV_VER_1_11_0_STR;
case PRIV_VERSION_1_12_0:
return PRIV_VER_1_12_0_STR;
default:
return NULL;
}
}
static void prop_priv_spec_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
g_autofree char *value = NULL;
int priv_version = -1;
visit_type_str(v, name, &value, errp);
priv_version = priv_spec_from_str(value);
if (priv_version < 0) {
error_setg(errp, "Unsupported privilege spec version '%s'", value);
return;
}
if (priv_version != cpu->env.priv_ver && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %s\n", name,
object_property_get_str(obj, name, NULL));
return;
}
cpu_option_add_user_setting(name, priv_version);
cpu->env.priv_ver = priv_version;
}
static void prop_priv_spec_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
const char *value = priv_spec_to_str(cpu->env.priv_ver);
visit_type_str(v, name, (char **)&value, errp);
}
static const PropertyInfo prop_priv_spec = {
.name = "priv_spec",
.get = prop_priv_spec_get,
.set = prop_priv_spec_set,
};
static void prop_vext_spec_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
g_autofree char *value = NULL;
visit_type_str(v, name, &value, errp);
if (g_strcmp0(value, VEXT_VER_1_00_0_STR) != 0) {
error_setg(errp, "Unsupported vector spec version '%s'", value);
return;
}
cpu_option_add_user_setting(name, VEXT_VERSION_1_00_0);
cpu->env.vext_ver = VEXT_VERSION_1_00_0;
}
static void prop_vext_spec_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
const char *value = VEXT_VER_1_00_0_STR;
visit_type_str(v, name, (char **)&value, errp);
}
static const PropertyInfo prop_vext_spec = {
.name = "vext_spec",
.get = prop_vext_spec_get,
.set = prop_vext_spec_set,
};
static void prop_vlen_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
if (!is_power_of_2(value)) {
error_setg(errp, "Vector extension VLEN must be power of 2");
return;
}
if (value != cpu->cfg.vlen && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, cpu->cfg.vlen);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.vlen = value;
cpu->cfg.vlenb = value >> 3;
}
static void prop_vlen_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint16_t value = RISCV_CPU(obj)->cfg.vlen;
visit_type_uint16(v, name, &value, errp);
}
static const PropertyInfo prop_vlen = {
.name = "vlen",
.get = prop_vlen_get,
.set = prop_vlen_set,
};
static void prop_elen_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
if (!is_power_of_2(value)) {
error_setg(errp, "Vector extension ELEN must be power of 2");
return;
}
if (value != cpu->cfg.elen && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, cpu->cfg.elen);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.elen = value;
}
static void prop_elen_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint16_t value = RISCV_CPU(obj)->cfg.elen;
visit_type_uint16(v, name, &value, errp);
}
static const PropertyInfo prop_elen = {
.name = "elen",
.get = prop_elen_get,
.set = prop_elen_set,
};
static void prop_cbom_blksize_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
if (value != cpu->cfg.cbom_blocksize && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, cpu->cfg.cbom_blocksize);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.cbom_blocksize = value;
}
static void prop_cbom_blksize_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint16_t value = RISCV_CPU(obj)->cfg.cbom_blocksize;
visit_type_uint16(v, name, &value, errp);
}
static const PropertyInfo prop_cbom_blksize = {
.name = "cbom_blocksize",
.get = prop_cbom_blksize_get,
.set = prop_cbom_blksize_set,
};
static void prop_cbop_blksize_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
if (value != cpu->cfg.cbop_blocksize && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, cpu->cfg.cbop_blocksize);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.cbop_blocksize = value;
}
static void prop_cbop_blksize_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint16_t value = RISCV_CPU(obj)->cfg.cbop_blocksize;
visit_type_uint16(v, name, &value, errp);
}
static const PropertyInfo prop_cbop_blksize = {
.name = "cbop_blocksize",
.get = prop_cbop_blksize_get,
.set = prop_cbop_blksize_set,
};
static void prop_cboz_blksize_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(obj);
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
if (value != cpu->cfg.cboz_blocksize && riscv_cpu_is_vendor(obj)) {
cpu_set_prop_err(cpu, name, errp);
error_append_hint(errp, "Current '%s' val: %u\n",
name, cpu->cfg.cboz_blocksize);
return;
}
cpu_option_add_user_setting(name, value);
cpu->cfg.cboz_blocksize = value;
}
static void prop_cboz_blksize_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint16_t value = RISCV_CPU(obj)->cfg.cboz_blocksize;
visit_type_uint16(v, name, &value, errp);
}
static const PropertyInfo prop_cboz_blksize = {
.name = "cboz_blocksize",
.get = prop_cboz_blksize_get,
.set = prop_cboz_blksize_set,
};
static void prop_mvendorid_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool dynamic_cpu = riscv_cpu_is_dynamic(obj);
RISCVCPU *cpu = RISCV_CPU(obj);
uint32_t prev_val = cpu->cfg.mvendorid;
uint32_t value;
if (!visit_type_uint32(v, name, &value, errp)) {
return;
}
if (!dynamic_cpu && prev_val != value) {
error_setg(errp, "Unable to change %s mvendorid (0x%x)",
object_get_typename(obj), prev_val);
return;
}
cpu->cfg.mvendorid = value;
}
static void prop_mvendorid_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint32_t value = RISCV_CPU(obj)->cfg.mvendorid;
visit_type_uint32(v, name, &value, errp);
}
static const PropertyInfo prop_mvendorid = {
.name = "mvendorid",
.get = prop_mvendorid_get,
.set = prop_mvendorid_set,
};
static void prop_mimpid_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool dynamic_cpu = riscv_cpu_is_dynamic(obj);
RISCVCPU *cpu = RISCV_CPU(obj);
uint64_t prev_val = cpu->cfg.mimpid;
uint64_t value;
if (!visit_type_uint64(v, name, &value, errp)) {
return;
}
if (!dynamic_cpu && prev_val != value) {
error_setg(errp, "Unable to change %s mimpid (0x%" PRIu64 ")",
object_get_typename(obj), prev_val);
return;
}
cpu->cfg.mimpid = value;
}
static void prop_mimpid_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint64_t value = RISCV_CPU(obj)->cfg.mimpid;
visit_type_uint64(v, name, &value, errp);
}
static const PropertyInfo prop_mimpid = {
.name = "mimpid",
.get = prop_mimpid_get,
.set = prop_mimpid_set,
};
static void prop_marchid_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool dynamic_cpu = riscv_cpu_is_dynamic(obj);
RISCVCPU *cpu = RISCV_CPU(obj);
uint64_t prev_val = cpu->cfg.marchid;
uint64_t value, invalid_val;
uint32_t mxlen = 0;
if (!visit_type_uint64(v, name, &value, errp)) {
return;
}
if (!dynamic_cpu && prev_val != value) {
error_setg(errp, "Unable to change %s marchid (0x%" PRIu64 ")",
object_get_typename(obj), prev_val);
return;
}
switch (riscv_cpu_mxl(&cpu->env)) {
case MXL_RV32:
mxlen = 32;
break;
case MXL_RV64:
case MXL_RV128:
mxlen = 64;
break;
default:
g_assert_not_reached();
}
invalid_val = 1LL << (mxlen - 1);
if (value == invalid_val) {
error_setg(errp, "Unable to set marchid with MSB (%u) bit set "
"and the remaining bits zero", mxlen);
return;
}
cpu->cfg.marchid = value;
}
static void prop_marchid_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
uint64_t value = RISCV_CPU(obj)->cfg.marchid;
visit_type_uint64(v, name, &value, errp);
}
static const PropertyInfo prop_marchid = {
.name = "marchid",
.get = prop_marchid_get,
.set = prop_marchid_set,
};
/*
* RVA22U64 defines some 'named features' or 'synthetic extensions'
* that are cache related: Za64rs, Zic64b, Ziccif, Ziccrse, Ziccamoa
* and Zicclsm. We do not implement caching in QEMU so we'll consider
* all these named features as always enabled.
*
* There's no riscv,isa update for them (nor for zic64b, despite it
* having a cfg offset) at this moment.
*/
static RISCVCPUProfile RVA22U64 = {
.parent = NULL,
.name = "rva22u64",
.misa_ext = RVI | RVM | RVA | RVF | RVD | RVC | RVU,
.priv_spec = RISCV_PROFILE_ATTR_UNUSED,
.satp_mode = RISCV_PROFILE_ATTR_UNUSED,
.ext_offsets = {
CPU_CFG_OFFSET(ext_zicsr), CPU_CFG_OFFSET(ext_zihintpause),
CPU_CFG_OFFSET(ext_zba), CPU_CFG_OFFSET(ext_zbb),
CPU_CFG_OFFSET(ext_zbs), CPU_CFG_OFFSET(ext_zfhmin),
CPU_CFG_OFFSET(ext_zkt), CPU_CFG_OFFSET(ext_zicntr),
CPU_CFG_OFFSET(ext_zihpm), CPU_CFG_OFFSET(ext_zicbom),
CPU_CFG_OFFSET(ext_zicbop), CPU_CFG_OFFSET(ext_zicboz),
/* mandatory named features for this profile */
CPU_CFG_OFFSET(zic64b),
RISCV_PROFILE_EXT_LIST_END
}
};
/*
* As with RVA22U64, RVA22S64 also defines 'named features'.
*
* Cache related features that we consider enabled since we don't
* implement cache: Ssccptr
*
* Other named features that we already implement: Sstvecd, Sstvala,
* Sscounterenw
*
* Named features that we need to enable: svade
*
* The remaining features/extensions comes from RVA22U64.
*/
static RISCVCPUProfile RVA22S64 = {
.parent = &RVA22U64,
.name = "rva22s64",
.misa_ext = RVS,
.priv_spec = PRIV_VERSION_1_12_0,
.satp_mode = VM_1_10_SV39,
.ext_offsets = {
/* rva22s64 exts */
CPU_CFG_OFFSET(ext_zifencei), CPU_CFG_OFFSET(ext_svpbmt),
CPU_CFG_OFFSET(ext_svinval),
/* rva22s64 named features */
CPU_CFG_OFFSET(svade),
RISCV_PROFILE_EXT_LIST_END
}
};
RISCVCPUProfile *riscv_profiles[] = {
&RVA22U64,
&RVA22S64,
NULL,
};
static Property riscv_cpu_properties[] = {
DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true),
{.name = "pmu-mask", .info = &prop_pmu_mask},
{.name = "pmu-num", .info = &prop_pmu_num}, /* Deprecated */
{.name = "mmu", .info = &prop_mmu},
{.name = "pmp", .info = &prop_pmp},
{.name = "priv_spec", .info = &prop_priv_spec},
{.name = "vext_spec", .info = &prop_vext_spec},
{.name = "vlen", .info = &prop_vlen},
{.name = "elen", .info = &prop_elen},
{.name = "cbom_blocksize", .info = &prop_cbom_blksize},
{.name = "cbop_blocksize", .info = &prop_cbop_blksize},
{.name = "cboz_blocksize", .info = &prop_cboz_blksize},
{.name = "mvendorid", .info = &prop_mvendorid},
{.name = "mimpid", .info = &prop_mimpid},
{.name = "marchid", .info = &prop_marchid},
#ifndef CONFIG_USER_ONLY
DEFINE_PROP_UINT64("resetvec", RISCVCPU, env.resetvec, DEFAULT_RSTVEC),
#endif
DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false),
DEFINE_PROP_BOOL("rvv_ta_all_1s", RISCVCPU, cfg.rvv_ta_all_1s, false),
DEFINE_PROP_BOOL("rvv_ma_all_1s", RISCVCPU, cfg.rvv_ma_all_1s, false),
/*
* write_misa() is marked as experimental for now so mark
* it with -x and default to 'false'.
*/
DEFINE_PROP_BOOL("x-misa-w", RISCVCPU, cfg.misa_w, false),
DEFINE_PROP_END_OF_LIST(),
};
#if defined(TARGET_RISCV64)
static void rva22u64_profile_cpu_init(Object *obj)
{
rv64i_bare_cpu_init(obj);
RVA22U64.enabled = true;
}
static void rva22s64_profile_cpu_init(Object *obj)
{
rv64i_bare_cpu_init(obj);
RVA22S64.enabled = true;
}
#endif
static const gchar *riscv_gdb_arch_name(CPUState *cs)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
switch (riscv_cpu_mxl(env)) {
case MXL_RV32:
return "riscv:rv32";
case MXL_RV64:
case MXL_RV128:
return "riscv:rv64";
default:
g_assert_not_reached();
}
}
static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
{
RISCVCPU *cpu = RISCV_CPU(cs);
if (strcmp(xmlname, "riscv-csr.xml") == 0) {
return cpu->dyn_csr_xml;
} else if (strcmp(xmlname, "riscv-vector.xml") == 0) {
return cpu->dyn_vreg_xml;
}
return NULL;
}
#ifndef CONFIG_USER_ONLY
static int64_t riscv_get_arch_id(CPUState *cs)
{
RISCVCPU *cpu = RISCV_CPU(cs);
return cpu->env.mhartid;
}
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps riscv_sysemu_ops = {
.get_phys_page_debug = riscv_cpu_get_phys_page_debug,
.write_elf64_note = riscv_cpu_write_elf64_note,
.write_elf32_note = riscv_cpu_write_elf32_note,
.legacy_vmsd = &vmstate_riscv_cpu,
};
#endif
static void riscv_cpu_class_init(ObjectClass *c, void *data)
{
RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
CPUClass *cc = CPU_CLASS(c);
DeviceClass *dc = DEVICE_CLASS(c);
ResettableClass *rc = RESETTABLE_CLASS(c);
device_class_set_parent_realize(dc, riscv_cpu_realize,
&mcc->parent_realize);
resettable_class_set_parent_phases(rc, NULL, riscv_cpu_reset_hold, NULL,
&mcc->parent_phases);
cc->class_by_name = riscv_cpu_class_by_name;
cc->has_work = riscv_cpu_has_work;
cc->mmu_index = riscv_cpu_mmu_index;
cc->dump_state = riscv_cpu_dump_state;
cc->set_pc = riscv_cpu_set_pc;
cc->get_pc = riscv_cpu_get_pc;
cc->gdb_read_register = riscv_cpu_gdb_read_register;
cc->gdb_write_register = riscv_cpu_gdb_write_register;
cc->gdb_num_core_regs = 33;
cc->gdb_stop_before_watchpoint = true;
cc->disas_set_info = riscv_cpu_disas_set_info;
#ifndef CONFIG_USER_ONLY
cc->sysemu_ops = &riscv_sysemu_ops;
cc->get_arch_id = riscv_get_arch_id;
#endif
cc->gdb_arch_name = riscv_gdb_arch_name;
cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml;
device_class_set_props(dc, riscv_cpu_properties);
}
static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str,
int max_str_len)
{
const RISCVIsaExtData *edata;
char *old = *isa_str;
char *new = *isa_str;
for (edata = isa_edata_arr; edata && edata->name; edata++) {
if (isa_ext_is_enabled(cpu, edata->ext_enable_offset)) {
new = g_strconcat(old, "_", edata->name, NULL);
g_free(old);
old = new;
}
}
*isa_str = new;
}
char *riscv_isa_string(RISCVCPU *cpu)
{
int i;
const size_t maxlen = sizeof("rv128") + sizeof(riscv_single_letter_exts);
char *isa_str = g_new(char, maxlen);
char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
for (i = 0; i < sizeof(riscv_single_letter_exts) - 1; i++) {
if (cpu->env.misa_ext & RV(riscv_single_letter_exts[i])) {
*p++ = qemu_tolower(riscv_single_letter_exts[i]);
}
}
*p = '\0';
if (!cpu->cfg.short_isa_string) {
riscv_isa_string_ext(cpu, &isa_str, maxlen);
}
return isa_str;
}
#define DEFINE_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_CPU, \
.instance_init = initfn \
}
#define DEFINE_DYNAMIC_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_DYNAMIC_CPU, \
.instance_init = initfn \
}
#define DEFINE_VENDOR_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_VENDOR_CPU, \
.instance_init = initfn \
}
#define DEFINE_BARE_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_BARE_CPU, \
.instance_init = initfn \
}
#define DEFINE_PROFILE_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_BARE_CPU, \
.instance_init = initfn \
}
static const TypeInfo riscv_cpu_type_infos[] = {
{
.name = TYPE_RISCV_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(RISCVCPU),
.instance_align = __alignof(RISCVCPU),
.instance_init = riscv_cpu_init,
.instance_post_init = riscv_cpu_post_init,
.abstract = true,
.class_size = sizeof(RISCVCPUClass),
.class_init = riscv_cpu_class_init,
},
{
.name = TYPE_RISCV_DYNAMIC_CPU,
.parent = TYPE_RISCV_CPU,
.abstract = true,
},
{
.name = TYPE_RISCV_VENDOR_CPU,
.parent = TYPE_RISCV_CPU,
.abstract = true,
},
{
.name = TYPE_RISCV_BARE_CPU,
.parent = TYPE_RISCV_CPU,
.abstract = true,
},
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init),
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, riscv_max_cpu_init),
#if defined(TARGET_RISCV32)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init),
#elif defined(TARGET_RISCV64)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_THEAD_C906, rv64_thead_c906_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_VEYRON_V1, rv64_veyron_v1_cpu_init),
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE128, rv128_base_cpu_init),
DEFINE_BARE_CPU(TYPE_RISCV_CPU_RV64I, rv64i_bare_cpu_init),
DEFINE_PROFILE_CPU(TYPE_RISCV_CPU_RVA22U64, rva22u64_profile_cpu_init),
DEFINE_PROFILE_CPU(TYPE_RISCV_CPU_RVA22S64, rva22s64_profile_cpu_init),
#endif
};
DEFINE_TYPES(riscv_cpu_type_infos)
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