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qemu/target/riscv/cpu.c
Daniel Henrique Barboza 55ea47397d target/riscv/cpu.c: check priv_ver before auto-enable zca/zcd/zcf 
Commit bd30559568 made changes in how we're checking and disabling
extensions based on env->priv_ver. One of the changes was to move the
extension disablement code to the end of realize(), being able to
disable extensions after we've auto-enabled some of them.

An unfortunate side effect of this change started to happen with CPUs
that has an older priv version, like sifive-u54. Starting on commit
2288a5ce43 we're auto-enabling zca, zcd and zcf if RVC is enabled,
but these extensions are priv version 1.12.0. When running a cpu that
has an older priv ver (like sifive-u54) the user is spammed with
warnings like these:

qemu-system-riscv64: warning: disabling zca extension for hart 0x0000000000000000 because privilege spec version does not match
qemu-system-riscv64: warning: disabling zcd extension for hart 0x0000000000000000 because privilege spec version does not match

The warnings are part of the code that disables the extension, but in this
case we're throwing user warnings for stuff that we enabled on our own,
without user intervention. Users are left wondering what they did wrong.

A quick 8.1 fix for this nuisance is to check the CPU priv spec before
auto-enabling zca/zcd/zcf. A more appropriate fix will include a more
robust framework that will account for both priv_ver and user choice
when auto-enabling/disabling extensions, but for 8.1 we'll make it do
with this simple check.

It's also worth noticing that this is the only case where we're
auto-enabling extensions based on a criteria (in this case RVC) that
doesn't match the priv spec of the extensions we're enabling. There's no
need for more 8.1 band-aids.

Cc: Conor Dooley <conor@kernel.org>
Fixes: 2288a5ce43 ("target/riscv: add cfg properties for Zc* extension")
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Message-Id: <20230717154141.60898-1-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-07-19 14:30:52 +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 "pmu.h"
#include "internals.h"
#include "time_helper.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 "migration/vmstate.h"
#include "fpu/softfloat-helpers.h"
#include "sysemu/kvm.h"
#include "sysemu/tcg.h"
#include "kvm_riscv.h"
#include "tcg/tcg.h"
/* RISC-V CPU definitions */
static const char riscv_single_letter_exts[] = "IEMAFDQCPVH";
struct isa_ext_data {
const char *name;
int min_version;
int ext_enable_offset;
};
#define ISA_EXT_DATA_ENTRY(_name, _min_ver, _prop) \
{#_name, _min_ver, offsetof(struct RISCVCPUConfig, _prop)}
/*
* 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
/*
* 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.
*/
static const struct isa_ext_data isa_edata_arr[] = {
ISA_EXT_DATA_ENTRY(zicbom, PRIV_VERSION_1_12_0, ext_icbom),
ISA_EXT_DATA_ENTRY(zicboz, PRIV_VERSION_1_12_0, ext_icboz),
ISA_EXT_DATA_ENTRY(zicond, PRIV_VERSION_1_12_0, ext_zicond),
ISA_EXT_DATA_ENTRY(zicsr, PRIV_VERSION_1_10_0, ext_icsr),
ISA_EXT_DATA_ENTRY(zifencei, PRIV_VERSION_1_10_0, ext_ifencei),
ISA_EXT_DATA_ENTRY(zihintpause, PRIV_VERSION_1_10_0, ext_zihintpause),
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(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(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(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),
};
static bool isa_ext_is_enabled(RISCVCPU *cpu,
const struct isa_ext_data *edata)
{
bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset;
return *ext_enabled;
}
static void isa_ext_update_enabled(RISCVCPU *cpu,
const struct isa_ext_data *edata, bool en)
{
bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset;
*ext_enabled = en;
}
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"
};
static void riscv_cpu_add_user_properties(Object *obj);
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)";
}
}
static void 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 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)
{
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)
set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU);
#elif defined(TARGET_RISCV64)
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_ifencei = true;
cpu->cfg.ext_icsr = true;
cpu->cfg.mmu = true;
cpu->cfg.pmp = true;
}
#if defined(TARGET_RISCV64)
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);
riscv_cpu_add_user_properties(obj);
/* 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;
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_ifencei = true;
cpu->cfg.ext_icsr = 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);
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_ifencei = true;
cpu->cfg.ext_icsr = 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);
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);
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_ifencei = true;
cpu->cfg.ext_icsr = true;
cpu->cfg.pmp = true;
cpu->cfg.ext_icbom = true;
cpu->cfg.cbom_blocksize = 64;
cpu->cfg.cboz_blocksize = 64;
cpu->cfg.ext_icboz = 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)
{
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);
}
CPURISCVState *env = &RISCV_CPU(obj)->env;
/* We set this in the realise function */
set_misa(env, MXL_RV128, 0);
riscv_cpu_add_user_properties(obj);
/* 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
}
#else
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);
riscv_cpu_add_user_properties(obj);
/* 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;
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_ifencei = true;
cpu->cfg.ext_icsr = 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);
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_ifencei = true;
cpu->cfg.ext_icsr = true;
cpu->cfg.pmp = true;
}
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);
env->priv_ver = PRIV_VERSION_1_11_0;
#ifndef CONFIG_USER_ONLY
set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
#endif
cpu->cfg.epmp = true;
/* inherited from parent obj via riscv_cpu_init() */
cpu->cfg.ext_ifencei = true;
cpu->cfg.ext_icsr = true;
cpu->cfg.pmp = 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);
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_ifencei = true;
cpu->cfg.ext_icsr = true;
cpu->cfg.pmp = true;
}
#endif
#if defined(CONFIG_KVM)
static void riscv_host_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
#if defined(TARGET_RISCV32)
set_misa(env, MXL_RV32, 0);
#elif defined(TARGET_RISCV64)
set_misa(env, MXL_RV64, 0);
#endif
riscv_cpu_add_user_properties(obj);
}
#endif /* CONFIG_KVM */
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);
if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
object_class_is_abstract(oc)) {
return NULL;
}
return oc;
}
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 (int 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 (int 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.vlen >> 3;
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 void riscv_cpu_synchronize_from_tb(CPUState *cs,
const TranslationBlock *tb)
{
if (!(tb_cflags(tb) & CF_PCREL)) {
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL);
tcg_debug_assert(!(cs->tcg_cflags & CF_PCREL));
if (xl == MXL_RV32) {
env->pc = (int32_t) tb->pc;
} else {
env->pc = tb->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;
#else
return true;
#endif
}
static void riscv_restore_state_to_opc(CPUState *cs,
const TranslationBlock *tb,
const uint64_t *data)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL);
target_ulong pc;
if (tb_cflags(tb) & CF_PCREL) {
pc = (env->pc & TARGET_PAGE_MASK) | data[0];
} else {
pc = data[0];
}
if (xl == MXL_RV32) {
env->pc = (int32_t)pc;
} else {
env->pc = pc;
}
env->bins = data[1];
}
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_HADE : 0);
env->henvcfg = (cpu->cfg.ext_svpbmt ? HENVCFG_PBMTE : 0) |
(cpu->cfg.ext_svadu ? HENVCFG_HADE : 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);
#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_init(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();
}
}
static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg,
Error **errp)
{
int vext_version = VEXT_VERSION_1_00_0;
if (!is_power_of_2(cfg->vlen)) {
error_setg(errp, "Vector extension VLEN must be power of 2");
return;
}
if (cfg->vlen > RV_VLEN_MAX || cfg->vlen < 128) {
error_setg(errp,
"Vector extension implementation only supports VLEN "
"in the range [128, %d]", RV_VLEN_MAX);
return;
}
if (!is_power_of_2(cfg->elen)) {
error_setg(errp, "Vector extension ELEN must be power of 2");
return;
}
if (cfg->elen > 64 || cfg->elen < 8) {
error_setg(errp,
"Vector extension implementation only supports ELEN "
"in the range [8, 64]");
return;
}
if (cfg->vext_spec) {
if (!g_strcmp0(cfg->vext_spec, "v1.0")) {
vext_version = VEXT_VERSION_1_00_0;
} else {
error_setg(errp, "Unsupported vector spec version '%s'",
cfg->vext_spec);
return;
}
} else {
qemu_log("vector version is not specified, "
"use the default value v1.0\n");
}
env->vext_ver = vext_version;
}
static void riscv_cpu_validate_priv_spec(RISCVCPU *cpu, Error **errp)
{
CPURISCVState *env = &cpu->env;
int priv_version = -1;
if (cpu->cfg.priv_spec) {
if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) {
priv_version = PRIV_VERSION_1_12_0;
} else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
priv_version = PRIV_VERSION_1_11_0;
} else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
priv_version = PRIV_VERSION_1_10_0;
} else {
error_setg(errp,
"Unsupported privilege spec version '%s'",
cpu->cfg.priv_spec);
return;
}
env->priv_ver = priv_version;
}
}
static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu)
{
CPURISCVState *env = &cpu->env;
int i;
/* Force disable extensions if priv spec version does not match */
for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
if (isa_ext_is_enabled(cpu, &isa_edata_arr[i]) &&
(env->priv_ver < isa_edata_arr[i].min_version)) {
isa_ext_update_enabled(cpu, &isa_edata_arr[i], false);
#ifndef CONFIG_USER_ONLY
warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx
" because privilege spec version does not match",
isa_edata_arr[i].name, env->mhartid);
#else
warn_report("disabling %s extension because "
"privilege spec version does not match",
isa_edata_arr[i].name);
#endif
}
}
}
static void riscv_cpu_validate_misa_mxl(RISCVCPU *cpu, Error **errp)
{
RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
CPUClass *cc = CPU_CLASS(mcc);
CPURISCVState *env = &cpu->env;
/* Validate that MISA_MXL is set properly. */
switch (env->misa_mxl_max) {
#ifdef TARGET_RISCV64
case MXL_RV64:
case MXL_RV128:
cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
break;
#endif
case MXL_RV32:
cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
break;
default:
g_assert_not_reached();
}
if (env->misa_mxl_max != env->misa_mxl) {
error_setg(errp, "misa_mxl_max must be equal to misa_mxl");
return;
}
}
/*
* Check consistency between chosen extensions while setting
* cpu->cfg accordingly.
*/
void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
{
CPURISCVState *env = &cpu->env;
Error *local_err = NULL;
/* Do some ISA extension error checking */
if (riscv_has_ext(env, RVG) &&
!(riscv_has_ext(env, RVI) && riscv_has_ext(env, RVM) &&
riscv_has_ext(env, RVA) && riscv_has_ext(env, RVF) &&
riscv_has_ext(env, RVD) &&
cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) {
warn_report("Setting G will also set IMAFD_Zicsr_Zifencei");
cpu->cfg.ext_icsr = true;
cpu->cfg.ext_ifencei = true;
env->misa_ext |= RVI | RVM | RVA | RVF | RVD;
env->misa_ext_mask |= RVI | RVM | RVA | RVF | RVD;
}
if (riscv_has_ext(env, RVI) && riscv_has_ext(env, RVE)) {
error_setg(errp,
"I and E extensions are incompatible");
return;
}
if (!riscv_has_ext(env, RVI) && !riscv_has_ext(env, RVE)) {
error_setg(errp,
"Either I or E extension must be set");
return;
}
if (riscv_has_ext(env, RVS) && !riscv_has_ext(env, RVU)) {
error_setg(errp,
"Setting S extension without U extension is illegal");
return;
}
if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVI)) {
error_setg(errp,
"H depends on an I base integer ISA with 32 x registers");
return;
}
if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVS)) {
error_setg(errp, "H extension implicitly requires S-mode");
return;
}
if (riscv_has_ext(env, RVF) && !cpu->cfg.ext_icsr) {
error_setg(errp, "F extension requires Zicsr");
return;
}
if ((cpu->cfg.ext_zawrs) && !riscv_has_ext(env, RVA)) {
error_setg(errp, "Zawrs extension requires A extension");
return;
}
if (cpu->cfg.ext_zfa && !riscv_has_ext(env, RVF)) {
error_setg(errp, "Zfa extension requires F extension");
return;
}
if (cpu->cfg.ext_zfh) {
cpu->cfg.ext_zfhmin = true;
}
if (cpu->cfg.ext_zfhmin && !riscv_has_ext(env, RVF)) {
error_setg(errp, "Zfh/Zfhmin extensions require F extension");
return;
}
if (cpu->cfg.ext_zfbfmin && !riscv_has_ext(env, RVF)) {
error_setg(errp, "Zfbfmin extension depends on F extension");
return;
}
if (riscv_has_ext(env, RVD) && !riscv_has_ext(env, RVF)) {
error_setg(errp, "D extension requires F extension");
return;
}
if (riscv_has_ext(env, RVV)) {
riscv_cpu_validate_v(env, &cpu->cfg, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
/* The V vector extension depends on the Zve64d extension */
cpu->cfg.ext_zve64d = true;
}
/* The Zve64d extension depends on the Zve64f extension */
if (cpu->cfg.ext_zve64d) {
cpu->cfg.ext_zve64f = true;
}
/* The Zve64f extension depends on the Zve32f extension */
if (cpu->cfg.ext_zve64f) {
cpu->cfg.ext_zve32f = true;
}
if (cpu->cfg.ext_zve64d && !riscv_has_ext(env, RVD)) {
error_setg(errp, "Zve64d/V extensions require D extension");
return;
}
if (cpu->cfg.ext_zve32f && !riscv_has_ext(env, RVF)) {
error_setg(errp, "Zve32f/Zve64f extensions require F extension");
return;
}
if (cpu->cfg.ext_zvfh) {
cpu->cfg.ext_zvfhmin = true;
}
if (cpu->cfg.ext_zvfhmin && !cpu->cfg.ext_zve32f) {
error_setg(errp, "Zvfh/Zvfhmin extensions require Zve32f extension");
return;
}
if (cpu->cfg.ext_zvfh && !cpu->cfg.ext_zfhmin) {
error_setg(errp, "Zvfh extensions requires Zfhmin extension");
return;
}
if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zfbfmin) {
error_setg(errp, "Zvfbfmin extension depends on Zfbfmin extension");
return;
}
if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zve32f) {
error_setg(errp, "Zvfbfmin extension depends on Zve32f extension");
return;
}
if (cpu->cfg.ext_zvfbfwma && !cpu->cfg.ext_zvfbfmin) {
error_setg(errp, "Zvfbfwma extension depends on Zvfbfmin extension");
return;
}
/* Set the ISA extensions, checks should have happened above */
if (cpu->cfg.ext_zhinx) {
cpu->cfg.ext_zhinxmin = true;
}
if ((cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinxmin) && !cpu->cfg.ext_zfinx) {
error_setg(errp, "Zdinx/Zhinx/Zhinxmin extensions require Zfinx");
return;
}
if (cpu->cfg.ext_zfinx) {
if (!cpu->cfg.ext_icsr) {
error_setg(errp, "Zfinx extension requires Zicsr");
return;
}
if (riscv_has_ext(env, RVF)) {
error_setg(errp,
"Zfinx cannot be supported together with F extension");
return;
}
}
if (cpu->cfg.ext_zce) {
cpu->cfg.ext_zca = true;
cpu->cfg.ext_zcb = true;
cpu->cfg.ext_zcmp = true;
cpu->cfg.ext_zcmt = true;
if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) {
cpu->cfg.ext_zcf = true;
}
}
/* zca, zcd and zcf has a PRIV 1.12.0 restriction */
if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) {
cpu->cfg.ext_zca = true;
if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) {
cpu->cfg.ext_zcf = true;
}
if (riscv_has_ext(env, RVD)) {
cpu->cfg.ext_zcd = true;
}
}
if (env->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) {
error_setg(errp, "Zcf extension is only relevant to RV32");
return;
}
if (!riscv_has_ext(env, RVF) && cpu->cfg.ext_zcf) {
error_setg(errp, "Zcf extension requires F extension");
return;
}
if (!riscv_has_ext(env, RVD) && cpu->cfg.ext_zcd) {
error_setg(errp, "Zcd extension requires D extension");
return;
}
if ((cpu->cfg.ext_zcf || cpu->cfg.ext_zcd || cpu->cfg.ext_zcb ||
cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt) && !cpu->cfg.ext_zca) {
error_setg(errp, "Zcf/Zcd/Zcb/Zcmp/Zcmt extensions require Zca "
"extension");
return;
}
if (cpu->cfg.ext_zcd && (cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt)) {
error_setg(errp, "Zcmp/Zcmt extensions are incompatible with "
"Zcd extension");
return;
}
if (cpu->cfg.ext_zcmt && !cpu->cfg.ext_icsr) {
error_setg(errp, "Zcmt extension requires Zicsr extension");
return;
}
if (cpu->cfg.ext_zk) {
cpu->cfg.ext_zkn = true;
cpu->cfg.ext_zkr = true;
cpu->cfg.ext_zkt = true;
}
if (cpu->cfg.ext_zkn) {
cpu->cfg.ext_zbkb = true;
cpu->cfg.ext_zbkc = true;
cpu->cfg.ext_zbkx = true;
cpu->cfg.ext_zkne = true;
cpu->cfg.ext_zknd = true;
cpu->cfg.ext_zknh = true;
}
if (cpu->cfg.ext_zks) {
cpu->cfg.ext_zbkb = true;
cpu->cfg.ext_zbkc = true;
cpu->cfg.ext_zbkx = true;
cpu->cfg.ext_zksed = true;
cpu->cfg.ext_zksh = true;
}
/*
* Disable isa extensions based on priv spec after we
* validated and set everything we need.
*/
riscv_cpu_disable_priv_spec_isa_exts(cpu);
}
#ifndef CONFIG_USER_ONLY
static void riscv_cpu_satp_mode_finalize(RISCVCPU *cpu, Error **errp)
{
bool rv32 = riscv_cpu_mxl(&cpu->env) == MXL_RV32;
uint8_t satp_mode_map_max;
uint8_t 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
static void riscv_cpu_finalize_features(RISCVCPU *cpu, Error **errp)
{
#ifndef CONFIG_USER_ONLY
Error *local_err = NULL;
riscv_cpu_satp_mode_finalize(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
#endif
}
static void riscv_cpu_validate_misa_priv(CPURISCVState *env, Error **errp)
{
if (riscv_has_ext(env, RVH) && env->priv_ver < PRIV_VERSION_1_12_0) {
error_setg(errp, "H extension requires priv spec 1.12.0");
return;
}
}
static void riscv_cpu_realize_tcg(DeviceState *dev, Error **errp)
{
RISCVCPU *cpu = RISCV_CPU(dev);
CPURISCVState *env = &cpu->env;
Error *local_err = NULL;
riscv_cpu_validate_misa_mxl(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
riscv_cpu_validate_priv_spec(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
riscv_cpu_validate_misa_priv(env, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
if (cpu->cfg.epmp && !cpu->cfg.pmp) {
/*
* Enhanced PMP should only be available
* on harts with PMP support
*/
error_setg(errp, "Invalid configuration: EPMP requires PMP support");
return;
}
riscv_cpu_validate_set_extensions(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
#ifndef CONFIG_USER_ONLY
CPU(dev)->tcg_cflags |= CF_PCREL;
if (cpu->cfg.ext_sstc) {
riscv_timer_init(cpu);
}
if (cpu->cfg.pmu_num) {
if (!riscv_pmu_init(cpu, cpu->cfg.pmu_num) && cpu->cfg.ext_sscofpmf) {
cpu->pmu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
riscv_pmu_timer_cb, cpu);
}
}
#endif
}
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;
cpu_exec_realizefn(cs, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
if (tcg_enabled()) {
riscv_cpu_realize_tcg(dev, &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);
qemu_init_vcpu(cs);
cpu_reset(cs);
mcc->parent_realize(dev, errp);
}
#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;
}
static 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 void riscv_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
cpu_set_cpustate_pointers(cpu);
#ifndef CONFIG_USER_ONLY
qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq,
IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX);
#endif /* CONFIG_USER_ONLY */
}
typedef struct RISCVCPUMisaExtConfig {
const char *name;
const char *description;
target_ulong misa_bit;
bool enabled;
} RISCVCPUMisaExtConfig;
static void cpu_set_misa_ext_cfg(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque;
target_ulong misa_bit = misa_ext_cfg->misa_bit;
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
bool value;
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
if (value) {
env->misa_ext |= misa_bit;
env->misa_ext_mask |= misa_bit;
} else {
env->misa_ext &= ~misa_bit;
env->misa_ext_mask &= ~misa_bit;
}
}
static void cpu_get_misa_ext_cfg(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque;
target_ulong misa_bit = misa_ext_cfg->misa_bit;
RISCVCPU *cpu = RISCV_CPU(obj);
CPURISCVState *env = &cpu->env;
bool value;
value = env->misa_ext & misa_bit;
visit_type_bool(v, name, &value, errp);
}
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)"),
};
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 MISA_CFG(_bit, _enabled) \
{.misa_bit = _bit, .enabled = _enabled}
static RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
MISA_CFG(RVA, true),
MISA_CFG(RVC, true),
MISA_CFG(RVD, true),
MISA_CFG(RVF, true),
MISA_CFG(RVI, true),
MISA_CFG(RVE, false),
MISA_CFG(RVM, true),
MISA_CFG(RVS, true),
MISA_CFG(RVU, true),
MISA_CFG(RVH, true),
MISA_CFG(RVJ, false),
MISA_CFG(RVV, false),
MISA_CFG(RVG, false),
};
static void riscv_cpu_add_misa_properties(Object *cpu_obj)
{
int i;
for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) {
RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i];
int bit = misa_cfg->misa_bit;
misa_cfg->name = riscv_get_misa_ext_name(bit);
misa_cfg->description = riscv_get_misa_ext_description(bit);
/* Check if KVM already created the property */
if (object_property_find(cpu_obj, misa_cfg->name)) {
continue;
}
object_property_add(cpu_obj, misa_cfg->name, "bool",
cpu_get_misa_ext_cfg,
cpu_set_misa_ext_cfg,
NULL, (void *)misa_cfg);
object_property_set_description(cpu_obj, misa_cfg->name,
misa_cfg->description);
object_property_set_bool(cpu_obj, misa_cfg->name,
misa_cfg->enabled, NULL);
}
}
static Property riscv_cpu_extensions[] = {
/* Defaults for standard extensions */
DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16),
DEFINE_PROP_BOOL("sscofpmf", RISCVCPU, cfg.ext_sscofpmf, false),
DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
DEFINE_PROP_BOOL("Zihintpause", RISCVCPU, cfg.ext_zihintpause, true),
DEFINE_PROP_BOOL("Zawrs", RISCVCPU, cfg.ext_zawrs, true),
DEFINE_PROP_BOOL("Zfa", RISCVCPU, cfg.ext_zfa, true),
DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false),
DEFINE_PROP_BOOL("Zfhmin", RISCVCPU, cfg.ext_zfhmin, false),
DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false),
DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false),
DEFINE_PROP_BOOL("Zve64d", RISCVCPU, cfg.ext_zve64d, false),
DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
DEFINE_PROP_BOOL("sstc", RISCVCPU, cfg.ext_sstc, 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_BOOL("smstateen", RISCVCPU, cfg.ext_smstateen, false),
DEFINE_PROP_BOOL("svadu", RISCVCPU, cfg.ext_svadu, true),
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),
DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true),
DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true),
DEFINE_PROP_BOOL("zbc", RISCVCPU, cfg.ext_zbc, true),
DEFINE_PROP_BOOL("zbkb", RISCVCPU, cfg.ext_zbkb, false),
DEFINE_PROP_BOOL("zbkc", RISCVCPU, cfg.ext_zbkc, false),
DEFINE_PROP_BOOL("zbkx", RISCVCPU, cfg.ext_zbkx, false),
DEFINE_PROP_BOOL("zbs", RISCVCPU, cfg.ext_zbs, true),
DEFINE_PROP_BOOL("zk", RISCVCPU, cfg.ext_zk, false),
DEFINE_PROP_BOOL("zkn", RISCVCPU, cfg.ext_zkn, false),
DEFINE_PROP_BOOL("zknd", RISCVCPU, cfg.ext_zknd, false),
DEFINE_PROP_BOOL("zkne", RISCVCPU, cfg.ext_zkne, false),
DEFINE_PROP_BOOL("zknh", RISCVCPU, cfg.ext_zknh, false),
DEFINE_PROP_BOOL("zkr", RISCVCPU, cfg.ext_zkr, false),
DEFINE_PROP_BOOL("zks", RISCVCPU, cfg.ext_zks, false),
DEFINE_PROP_BOOL("zksed", RISCVCPU, cfg.ext_zksed, false),
DEFINE_PROP_BOOL("zksh", RISCVCPU, cfg.ext_zksh, false),
DEFINE_PROP_BOOL("zkt", RISCVCPU, cfg.ext_zkt, false),
DEFINE_PROP_BOOL("zdinx", RISCVCPU, cfg.ext_zdinx, false),
DEFINE_PROP_BOOL("zfinx", RISCVCPU, cfg.ext_zfinx, false),
DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false),
DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false),
DEFINE_PROP_BOOL("zicbom", RISCVCPU, cfg.ext_icbom, true),
DEFINE_PROP_UINT16("cbom_blocksize", RISCVCPU, cfg.cbom_blocksize, 64),
DEFINE_PROP_BOOL("zicboz", RISCVCPU, cfg.ext_icboz, true),
DEFINE_PROP_UINT16("cboz_blocksize", RISCVCPU, cfg.cboz_blocksize, 64),
DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false),
DEFINE_PROP_BOOL("zca", RISCVCPU, cfg.ext_zca, false),
DEFINE_PROP_BOOL("zcb", RISCVCPU, cfg.ext_zcb, false),
DEFINE_PROP_BOOL("zcd", RISCVCPU, cfg.ext_zcd, false),
DEFINE_PROP_BOOL("zce", RISCVCPU, cfg.ext_zce, false),
DEFINE_PROP_BOOL("zcf", RISCVCPU, cfg.ext_zcf, false),
DEFINE_PROP_BOOL("zcmp", RISCVCPU, cfg.ext_zcmp, false),
DEFINE_PROP_BOOL("zcmt", RISCVCPU, cfg.ext_zcmt, false),
/* Vendor-specific custom extensions */
DEFINE_PROP_BOOL("xtheadba", RISCVCPU, cfg.ext_xtheadba, false),
DEFINE_PROP_BOOL("xtheadbb", RISCVCPU, cfg.ext_xtheadbb, false),
DEFINE_PROP_BOOL("xtheadbs", RISCVCPU, cfg.ext_xtheadbs, false),
DEFINE_PROP_BOOL("xtheadcmo", RISCVCPU, cfg.ext_xtheadcmo, false),
DEFINE_PROP_BOOL("xtheadcondmov", RISCVCPU, cfg.ext_xtheadcondmov, false),
DEFINE_PROP_BOOL("xtheadfmemidx", RISCVCPU, cfg.ext_xtheadfmemidx, false),
DEFINE_PROP_BOOL("xtheadfmv", RISCVCPU, cfg.ext_xtheadfmv, false),
DEFINE_PROP_BOOL("xtheadmac", RISCVCPU, cfg.ext_xtheadmac, false),
DEFINE_PROP_BOOL("xtheadmemidx", RISCVCPU, cfg.ext_xtheadmemidx, false),
DEFINE_PROP_BOOL("xtheadmempair", RISCVCPU, cfg.ext_xtheadmempair, false),
DEFINE_PROP_BOOL("xtheadsync", RISCVCPU, cfg.ext_xtheadsync, false),
DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
/* These are experimental so mark with 'x-' */
DEFINE_PROP_BOOL("x-zicond", RISCVCPU, cfg.ext_zicond, false),
/* ePMP 0.9.3 */
DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
DEFINE_PROP_BOOL("x-smaia", RISCVCPU, cfg.ext_smaia, false),
DEFINE_PROP_BOOL("x-ssaia", RISCVCPU, cfg.ext_ssaia, false),
DEFINE_PROP_BOOL("x-zvfh", RISCVCPU, cfg.ext_zvfh, false),
DEFINE_PROP_BOOL("x-zvfhmin", RISCVCPU, cfg.ext_zvfhmin, false),
DEFINE_PROP_BOOL("x-zfbfmin", RISCVCPU, cfg.ext_zfbfmin, false),
DEFINE_PROP_BOOL("x-zvfbfmin", RISCVCPU, cfg.ext_zvfbfmin, false),
DEFINE_PROP_BOOL("x-zvfbfwma", RISCVCPU, cfg.ext_zvfbfwma, false),
DEFINE_PROP_END_OF_LIST(),
};
#ifndef CONFIG_USER_ONLY
static void cpu_set_cfg_unavailable(Object *obj, Visitor *v,
const char *name,
void *opaque, Error **errp)
{
const char *propname = opaque;
bool value;
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
if (value) {
error_setg(errp, "extension %s is not available with KVM",
propname);
}
}
#endif
/*
* Add CPU properties with user-facing flags.
*
* This will overwrite existing env->misa_ext values with the
* defaults set via riscv_cpu_add_misa_properties().
*/
static void riscv_cpu_add_user_properties(Object *obj)
{
Property *prop;
DeviceState *dev = DEVICE(obj);
#ifndef CONFIG_USER_ONLY
riscv_add_satp_mode_properties(obj);
if (kvm_enabled()) {
kvm_riscv_init_user_properties(obj);
}
#endif
riscv_cpu_add_misa_properties(obj);
for (prop = riscv_cpu_extensions; prop && prop->name; prop++) {
#ifndef CONFIG_USER_ONLY
if (kvm_enabled()) {
/* Check if KVM created the property already */
if (object_property_find(obj, prop->name)) {
continue;
}
/*
* Set the default to disabled for every extension
* unknown to KVM and error out if the user attempts
* to enable any of them.
*
* We're giving a pass for non-bool properties since they're
* not related to the availability of extensions and can be
* safely ignored as is.
*/
if (prop->info == &qdev_prop_bool) {
object_property_add(obj, prop->name, "bool",
NULL, cpu_set_cfg_unavailable,
NULL, (void *)prop->name);
continue;
}
}
#endif
qdev_property_add_static(dev, prop);
}
}
static Property riscv_cpu_properties[] = {
DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true),
#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(),
};
static 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 g_strdup("riscv:rv32");
case MXL_RV64:
case MXL_RV128:
return g_strdup("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
#include "hw/core/tcg-cpu-ops.h"
static const struct TCGCPUOps riscv_tcg_ops = {
.initialize = riscv_translate_init,
.synchronize_from_tb = riscv_cpu_synchronize_from_tb,
.restore_state_to_opc = riscv_restore_state_to_opc,
#ifndef CONFIG_USER_ONLY
.tlb_fill = riscv_cpu_tlb_fill,
.cpu_exec_interrupt = riscv_cpu_exec_interrupt,
.do_interrupt = riscv_cpu_do_interrupt,
.do_transaction_failed = riscv_cpu_do_transaction_failed,
.do_unaligned_access = riscv_cpu_do_unaligned_access,
.debug_excp_handler = riscv_cpu_debug_excp_handler,
.debug_check_breakpoint = riscv_cpu_debug_check_breakpoint,
.debug_check_watchpoint = riscv_cpu_debug_check_watchpoint,
#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 cpu_set_mvendorid(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 cpu_get_mvendorid(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool value = RISCV_CPU(obj)->cfg.mvendorid;
visit_type_bool(v, name, &value, errp);
}
static void cpu_set_mimpid(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 cpu_get_mimpid(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool value = RISCV_CPU(obj)->cfg.mimpid;
visit_type_bool(v, name, &value, errp);
}
static void cpu_set_marchid(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 cpu_get_marchid(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool value = RISCV_CPU(obj)->cfg.marchid;
visit_type_bool(v, name, &value, errp);
}
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->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;
cc->tcg_ops = &riscv_tcg_ops;
object_class_property_add(c, "mvendorid", "uint32", cpu_get_mvendorid,
cpu_set_mvendorid, NULL, NULL);
object_class_property_add(c, "mimpid", "uint64", cpu_get_mimpid,
cpu_set_mimpid, NULL, NULL);
object_class_property_add(c, "marchid", "uint64", cpu_get_marchid,
cpu_set_marchid, NULL, NULL);
device_class_set_props(dc, riscv_cpu_properties);
}
static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str,
int max_str_len)
{
char *old = *isa_str;
char *new = *isa_str;
int i;
for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
if (isa_ext_is_enabled(cpu, &isa_edata_arr[i])) {
new = g_strconcat(old, "_", isa_edata_arr[i].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;
}
static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
{
ObjectClass *class_a = (ObjectClass *)a;
ObjectClass *class_b = (ObjectClass *)b;
const char *name_a, *name_b;
name_a = object_class_get_name(class_a);
name_b = object_class_get_name(class_b);
return strcmp(name_a, name_b);
}
static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
{
const char *typename = object_class_get_name(OBJECT_CLASS(data));
int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
qemu_printf("%.*s\n", len, typename);
}
void riscv_cpu_list(void)
{
GSList *list;
list = object_class_get_list(TYPE_RISCV_CPU, false);
list = g_slist_sort(list, riscv_cpu_list_compare);
g_slist_foreach(list, riscv_cpu_list_entry, NULL);
g_slist_free(list);
}
#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 \
}
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,
.abstract = true,
.class_size = sizeof(RISCVCPUClass),
.class_init = riscv_cpu_class_init,
},
{
.name = TYPE_RISCV_DYNAMIC_CPU,
.parent = TYPE_RISCV_CPU,
.abstract = true,
},
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init),
#if defined(CONFIG_KVM)
DEFINE_CPU(TYPE_RISCV_CPU_HOST, riscv_host_cpu_init),
#endif
#if defined(TARGET_RISCV32)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init),
DEFINE_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_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_THEAD_C906, rv64_thead_c906_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_VEYRON_V1, rv64_veyron_v1_cpu_init),
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE128, rv128_base_cpu_init),
#endif
};
DEFINE_TYPES(riscv_cpu_type_infos)
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