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Merge tag 'pull-riscv-to-apply-20230207' of https://github.com/alista…
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…ir23/qemu into staging

Third RISC-V PR for QEMU 8.0

* Update disas for xnor/orn/andn and slli.uw
* Update opentitan IRQs
* Fix rom code when Zicsr is disabled
* Update VS timer whenever htimedelta changes
* A collection of fixes for virtulisation
* Set tval for triggered watchpoints
* Cleanups for board and FDT creation
* Add support for the T-Head vendor extensions
* A fix for virtual instr exception
* Fix ctzw behavior
* Fix SBI getchar handler for KVM

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# gpg: Signature made Tue 07 Feb 2023 07:08:52 GMT
# gpg:                using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8  CE8F 21E1 0D29 DF97 7054

* tag 'pull-riscv-to-apply-20230207' of https://github.com/alistair23/qemu: (32 commits)
  hw/riscv: virt: Simplify virt_{get,set}_aclint()
  target/riscv: fix SBI getchar handler for KVM
  target/riscv: fix ctzw behavior
  target/riscv: fix for virtual instr exception
  target/riscv: add a MAINTAINERS entry for XThead* extension support
  RISC-V: Adding XTheadFmv ISA extension
  RISC-V: Add initial support for T-Head C906
  RISC-V: Set minimum priv version for Zfh to 1.11
  RISC-V: Adding T-Head FMemIdx extension
  RISC-V: Adding T-Head MemIdx extension
  RISC-V: Adding T-Head MemPair extension
  RISC-V: Adding T-Head multiply-accumulate instructions
  RISC-V: Adding XTheadCondMov ISA extension
  RISC-V: Adding XTheadBs ISA extension
  RISC-V: Adding XTheadBb ISA extension
  RISC-V: Adding XTheadBa ISA extension
  RISC-V: Adding XTheadSync ISA extension
  RISC-V: Adding XTheadCmo ISA extension
  hw/riscv: change riscv_compute_fdt_addr() semantics
  hw/riscv: split fdt address calculation from fdt load
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@pm215
pm215 committed Feb 7, 2023
2 parents b86307e + 5474aa4 commit 5c71a91
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Showing 32 changed files with 1,847 additions and 328 deletions.
8 changes: 8 additions & 0 deletions MAINTAINERS
View file
Expand Up @@ -295,6 +295,14 @@ F: include/hw/riscv/
F: linux-user/host/riscv32/
F: linux-user/host/riscv64/

RISC-V XThead* extensions
M: Christoph Muellner <christoph.muellner@vrull.eu>
M: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
L: qemu-riscv@nongnu.org
S: Supported
F: target/riscv/insn_trans/trans_xthead.c.inc
F: target/riscv/xthead*.decode

RISC-V XVentanaCondOps extension
M: Philipp Tomsich <philipp.tomsich@vrull.eu>
L: qemu-riscv@nongnu.org
Expand Down
8 changes: 4 additions & 4 deletions disas/riscv.c
View file
Expand Up @@ -1626,9 +1626,9 @@ const rv_opcode_data opcode_data[] = {
{ "cpop", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "sext.h", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "sext.b", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "xnor", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "orn", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "andn", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "xnor", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "orn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "andn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rol", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "ror", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh1add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
Expand All @@ -1647,7 +1647,7 @@ const rv_opcode_data opcode_data[] = {
{ "clzw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "clzw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "cpopw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "slli.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "slli.uw", rv_codec_i_sh5, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rolw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rorw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
Expand Down
62 changes: 52 additions & 10 deletions hw/riscv/boot.c
View file
Expand Up @@ -249,38 +249,71 @@ void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
}
}

uint64_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
/*
* This function makes an assumption that the DRAM interval
* 'dram_base' + 'dram_size' is contiguous.
*
* Considering that 'dram_end' is the lowest value between
* the end of the DRAM block and MachineState->ram_size, the
* FDT location will vary according to 'dram_base':
*
* - if 'dram_base' is less that 3072 MiB, the FDT will be
* put at the lowest value between 3072 MiB and 'dram_end';
*
* - if 'dram_base' is higher than 3072 MiB, the FDT will be
* put at 'dram_end'.
*
* The FDT is fdt_packed() during the calculation.
*/
uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size,
MachineState *ms)
{
uint64_t temp, fdt_addr;
hwaddr dram_end = dram_base + mem_size;
int ret, fdtsize = fdt_totalsize(fdt);
int ret = fdt_pack(ms->fdt);
hwaddr dram_end, temp;
int fdtsize;

/* Should only fail if we've built a corrupted tree */
g_assert(ret == 0);

fdtsize = fdt_totalsize(ms->fdt);
if (fdtsize <= 0) {
error_report("invalid device-tree");
exit(1);
}

/*
* A dram_size == 0, usually from a MemMapEntry[].size element,
* means that the DRAM block goes all the way to ms->ram_size.
*/
dram_end = dram_base;
dram_end += dram_size ? MIN(ms->ram_size, dram_size) : ms->ram_size;

/*
* We should put fdt as far as possible to avoid kernel/initrd overwriting
* its content. But it should be addressable by 32 bit system as well.
* Thus, put it at an 2MB aligned address that less than fdt size from the
* end of dram or 3GB whichever is lesser.
*/
temp = (dram_base < 3072 * MiB) ? MIN(dram_end, 3072 * MiB) : dram_end;
fdt_addr = QEMU_ALIGN_DOWN(temp - fdtsize, 2 * MiB);

ret = fdt_pack(fdt);
/* Should only fail if we've built a corrupted tree */
g_assert(ret == 0);
return QEMU_ALIGN_DOWN(temp - fdtsize, 2 * MiB);
}

/*
* 'fdt_addr' is received as hwaddr because boards might put
* the FDT beyond 32-bit addressing boundary.
*/
void riscv_load_fdt(hwaddr fdt_addr, void *fdt)
{
uint32_t fdtsize = fdt_totalsize(fdt);

/* copy in the device tree */
qemu_fdt_dumpdtb(fdt, fdtsize);

rom_add_blob_fixed_as("fdt", fdt, fdtsize, fdt_addr,
&address_space_memory);
qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
rom_ptr_for_as(&address_space_memory, fdt_addr, fdtsize));

return fdt_addr;
}

void riscv_rom_copy_firmware_info(MachineState *machine, hwaddr rom_base,
Expand Down Expand Up @@ -356,6 +389,15 @@ void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts
reset_vec[4] = 0x0182b283; /* ld t0, 24(t0) */
}

if (!harts->harts[0].cfg.ext_icsr) {
/*
* The Zicsr extension has been disabled, so let's ensure we don't
* run the CSR instruction. Let's fill the address with a non
* compressed nop.
*/
reset_vec[2] = 0x00000013; /* addi x0, x0, 0 */
}

/* copy in the reset vector in little_endian byte order */
for (i = 0; i < ARRAY_SIZE(reset_vec); i++) {
reset_vec[i] = cpu_to_le32(reset_vec[i]);
Expand Down
7 changes: 5 additions & 2 deletions hw/riscv/microchip_pfsoc.c
View file
Expand Up @@ -641,8 +641,11 @@ static void microchip_icicle_kit_machine_init(MachineState *machine)
}

/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
machine->ram_size, machine->fdt);
fdt_load_addr = riscv_compute_fdt_addr(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
memmap[MICROCHIP_PFSOC_DRAM_LO].size,
machine);
riscv_load_fdt(fdt_load_addr, machine->fdt);

/* Load the reset vector */
riscv_setup_rom_reset_vec(machine, &s->soc.u_cpus, firmware_load_addr,
memmap[MICROCHIP_PFSOC_ENVM_DATA].base,
Expand Down
80 changes: 40 additions & 40 deletions hw/riscv/opentitan.c
View file
Expand Up @@ -31,47 +31,47 @@
/*
* This version of the OpenTitan machine currently supports
* OpenTitan RTL version:
* <lowRISC/opentitan@d072ac505f82152678d6e04be95c72b728a347b8>
* <lowRISC/opentitan@565e4af39760a123c59a184aa2f5812a961fde47>
*
* MMIO mapping as per (specified commit):
* lowRISC/opentitan: hw/top_earlgrey/sw/autogen/top_earlgrey_memory.h
*/
static const MemMapEntry ibex_memmap[] = {
[IBEX_DEV_ROM] = { 0x00008000, 0x8000 },
[IBEX_DEV_RAM] = { 0x10000000, 0x20000 },
[IBEX_DEV_FLASH] = { 0x20000000, 0x100000 },
[IBEX_DEV_UART] = { 0x40000000, 0x1000 },
[IBEX_DEV_GPIO] = { 0x40040000, 0x1000 },
[IBEX_DEV_SPI_DEVICE] = { 0x40050000, 0x1000 },
[IBEX_DEV_I2C] = { 0x40080000, 0x1000 },
[IBEX_DEV_PATTGEN] = { 0x400e0000, 0x1000 },
[IBEX_DEV_TIMER] = { 0x40100000, 0x1000 },
[IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x4000 },
[IBEX_DEV_LC_CTRL] = { 0x40140000, 0x1000 },
[IBEX_DEV_ALERT_HANDLER] = { 0x40150000, 0x1000 },
[IBEX_DEV_SPI_HOST0] = { 0x40300000, 0x1000 },
[IBEX_DEV_SPI_HOST1] = { 0x40310000, 0x1000 },
[IBEX_DEV_USBDEV] = { 0x40320000, 0x1000 },
[IBEX_DEV_PWRMGR] = { 0x40400000, 0x1000 },
[IBEX_DEV_RSTMGR] = { 0x40410000, 0x1000 },
[IBEX_DEV_CLKMGR] = { 0x40420000, 0x1000 },
[IBEX_DEV_PINMUX] = { 0x40460000, 0x1000 },
[IBEX_DEV_AON_TIMER] = { 0x40470000, 0x1000 },
[IBEX_DEV_SENSOR_CTRL] = { 0x40490000, 0x1000 },
[IBEX_DEV_FLASH_CTRL] = { 0x41000000, 0x1000 },
[IBEX_DEV_AES] = { 0x41100000, 0x1000 },
[IBEX_DEV_HMAC] = { 0x41110000, 0x1000 },
[IBEX_DEV_KMAC] = { 0x41120000, 0x1000 },
[IBEX_DEV_OTBN] = { 0x41130000, 0x10000 },
[IBEX_DEV_KEYMGR] = { 0x41140000, 0x1000 },
[IBEX_DEV_CSRNG] = { 0x41150000, 0x1000 },
[IBEX_DEV_ENTROPY] = { 0x41160000, 0x1000 },
[IBEX_DEV_EDNO] = { 0x41170000, 0x1000 },
[IBEX_DEV_EDN1] = { 0x41180000, 0x1000 },
[IBEX_DEV_NMI_GEN] = { 0x411c0000, 0x1000 },
[IBEX_DEV_PERI] = { 0x411f0000, 0x10000 },
[IBEX_DEV_PLIC] = { 0x48000000, 0x4005000 },
[IBEX_DEV_FLASH_VIRTUAL] = { 0x80000000, 0x80000 },
[IBEX_DEV_ROM] = { 0x00008000, 0x8000 },
[IBEX_DEV_RAM] = { 0x10000000, 0x20000 },
[IBEX_DEV_FLASH] = { 0x20000000, 0x100000 },
[IBEX_DEV_UART] = { 0x40000000, 0x40 },
[IBEX_DEV_GPIO] = { 0x40040000, 0x40 },
[IBEX_DEV_SPI_DEVICE] = { 0x40050000, 0x2000 },
[IBEX_DEV_I2C] = { 0x40080000, 0x80 },
[IBEX_DEV_PATTGEN] = { 0x400e0000, 0x40 },
[IBEX_DEV_TIMER] = { 0x40100000, 0x200 },
[IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x2000 },
[IBEX_DEV_LC_CTRL] = { 0x40140000, 0x100 },
[IBEX_DEV_ALERT_HANDLER] = { 0x40150000, 0x800 },
[IBEX_DEV_SPI_HOST0] = { 0x40300000, 0x40 },
[IBEX_DEV_SPI_HOST1] = { 0x40310000, 0x40 },
[IBEX_DEV_USBDEV] = { 0x40320000, 0x1000 },
[IBEX_DEV_PWRMGR] = { 0x40400000, 0x80 },
[IBEX_DEV_RSTMGR] = { 0x40410000, 0x80 },
[IBEX_DEV_CLKMGR] = { 0x40420000, 0x80 },
[IBEX_DEV_PINMUX] = { 0x40460000, 0x1000 },
[IBEX_DEV_AON_TIMER] = { 0x40470000, 0x40 },
[IBEX_DEV_SENSOR_CTRL] = { 0x40490000, 0x40 },
[IBEX_DEV_FLASH_CTRL] = { 0x41000000, 0x200 },
[IBEX_DEV_AES] = { 0x41100000, 0x100 },
[IBEX_DEV_HMAC] = { 0x41110000, 0x1000 },
[IBEX_DEV_KMAC] = { 0x41120000, 0x1000 },
[IBEX_DEV_OTBN] = { 0x41130000, 0x10000 },
[IBEX_DEV_KEYMGR] = { 0x41140000, 0x100 },
[IBEX_DEV_CSRNG] = { 0x41150000, 0x80 },
[IBEX_DEV_ENTROPY] = { 0x41160000, 0x100 },
[IBEX_DEV_EDNO] = { 0x41170000, 0x80 },
[IBEX_DEV_EDN1] = { 0x41180000, 0x80 },
[IBEX_DEV_SRAM_CTRL] = { 0x411c0000, 0x20 },
[IBEX_DEV_IBEX_CFG] = { 0x411f0000, 0x100 },
[IBEX_DEV_PLIC] = { 0x48000000, 0x8000000 },
[IBEX_DEV_FLASH_VIRTUAL] = { 0x80000000, 0x80000 },
};

static void opentitan_board_init(MachineState *machine)
Expand Down Expand Up @@ -294,12 +294,12 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
memmap[IBEX_DEV_EDN1].base, memmap[IBEX_DEV_EDN1].size);
create_unimplemented_device("riscv.lowrisc.ibex.alert_handler",
memmap[IBEX_DEV_ALERT_HANDLER].base, memmap[IBEX_DEV_ALERT_HANDLER].size);
create_unimplemented_device("riscv.lowrisc.ibex.nmi_gen",
memmap[IBEX_DEV_NMI_GEN].base, memmap[IBEX_DEV_NMI_GEN].size);
create_unimplemented_device("riscv.lowrisc.ibex.sram_ctrl",
memmap[IBEX_DEV_SRAM_CTRL].base, memmap[IBEX_DEV_SRAM_CTRL].size);
create_unimplemented_device("riscv.lowrisc.ibex.otbn",
memmap[IBEX_DEV_OTBN].base, memmap[IBEX_DEV_OTBN].size);
create_unimplemented_device("riscv.lowrisc.ibex.peri",
memmap[IBEX_DEV_PERI].base, memmap[IBEX_DEV_PERI].size);
create_unimplemented_device("riscv.lowrisc.ibex.ibex_cfg",
memmap[IBEX_DEV_IBEX_CFG].base, memmap[IBEX_DEV_IBEX_CFG].size);
}

static Property lowrisc_ibex_soc_props[] = {
Expand Down
8 changes: 5 additions & 3 deletions hw/riscv/sifive_u.c
View file
Expand Up @@ -616,9 +616,11 @@ static void sifive_u_machine_init(MachineState *machine)
kernel_entry = 0;
}

/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[SIFIVE_U_DEV_DRAM].base,
machine->ram_size, machine->fdt);
fdt_load_addr = riscv_compute_fdt_addr(memmap[SIFIVE_U_DEV_DRAM].base,
memmap[SIFIVE_U_DEV_DRAM].size,
machine);
riscv_load_fdt(fdt_load_addr, machine->fdt);

if (!riscv_is_32bit(&s->soc.u_cpus)) {
start_addr_hi32 = (uint64_t)start_addr >> 32;
}
Expand Down
25 changes: 13 additions & 12 deletions hw/riscv/spike.c
View file
Expand Up @@ -56,7 +56,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
uint64_t addr, size;
unsigned long clint_addr;
int cpu, socket;
MachineState *mc = MACHINE(s);
MachineState *ms = MACHINE(s);
uint32_t *clint_cells;
uint32_t cpu_phandle, intc_phandle, phandle = 1;
char *name, *mem_name, *clint_name, *clust_name;
Expand All @@ -65,7 +65,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
"sifive,clint0", "riscv,clint0"
};

fdt = mc->fdt = create_device_tree(&fdt_size);
fdt = ms->fdt = create_device_tree(&fdt_size);
if (!fdt) {
error_report("create_device_tree() failed");
exit(1);
Expand Down Expand Up @@ -96,7 +96,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
qemu_fdt_add_subnode(fdt, "/cpus/cpu-map");

for (socket = (riscv_socket_count(mc) - 1); socket >= 0; socket--) {
for (socket = (riscv_socket_count(ms) - 1); socket >= 0; socket--) {
clust_name = g_strdup_printf("/cpus/cpu-map/cluster%d", socket);
qemu_fdt_add_subnode(fdt, clust_name);

Expand All @@ -121,7 +121,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
qemu_fdt_setprop_cell(fdt, cpu_name, "reg",
s->soc[socket].hartid_base + cpu);
qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu");
riscv_socket_fdt_write_id(mc, cpu_name, socket);
riscv_socket_fdt_write_id(ms, cpu_name, socket);
qemu_fdt_setprop_cell(fdt, cpu_name, "phandle", cpu_phandle);

intc_name = g_strdup_printf("%s/interrupt-controller", cpu_name);
Expand All @@ -147,14 +147,14 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
g_free(cpu_name);
}

addr = memmap[SPIKE_DRAM].base + riscv_socket_mem_offset(mc, socket);
size = riscv_socket_mem_size(mc, socket);
addr = memmap[SPIKE_DRAM].base + riscv_socket_mem_offset(ms, socket);
size = riscv_socket_mem_size(ms, socket);
mem_name = g_strdup_printf("/memory@%lx", (long)addr);
qemu_fdt_add_subnode(fdt, mem_name);
qemu_fdt_setprop_cells(fdt, mem_name, "reg",
addr >> 32, addr, size >> 32, size);
qemu_fdt_setprop_string(fdt, mem_name, "device_type", "memory");
riscv_socket_fdt_write_id(mc, mem_name, socket);
riscv_socket_fdt_write_id(ms, mem_name, socket);
g_free(mem_name);

clint_addr = memmap[SPIKE_CLINT].base +
Expand All @@ -167,14 +167,14 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
0x0, clint_addr, 0x0, memmap[SPIKE_CLINT].size);
qemu_fdt_setprop(fdt, clint_name, "interrupts-extended",
clint_cells, s->soc[socket].num_harts * sizeof(uint32_t) * 4);
riscv_socket_fdt_write_id(mc, clint_name, socket);
riscv_socket_fdt_write_id(ms, clint_name, socket);

g_free(clint_name);
g_free(clint_cells);
g_free(clust_name);
}

riscv_socket_fdt_write_distance_matrix(mc);
riscv_socket_fdt_write_distance_matrix(ms);

qemu_fdt_add_subnode(fdt, "/chosen");
qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
Expand Down Expand Up @@ -324,9 +324,10 @@ static void spike_board_init(MachineState *machine)
kernel_entry = 0;
}

/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
machine->ram_size, machine->fdt);
fdt_load_addr = riscv_compute_fdt_addr(memmap[SPIKE_DRAM].base,
memmap[SPIKE_DRAM].size,
machine);
riscv_load_fdt(fdt_load_addr, machine->fdt);

/* load the reset vector */
riscv_setup_rom_reset_vec(machine, &s->soc[0], memmap[SPIKE_DRAM].base,
Expand Down

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