Commit Graph

49 Commits

Author SHA1 Message Date
Alistair Francis
a8259b5323 riscv: Pass RISCVHartArrayState by pointer
We were accidently passing RISCVHartArrayState by value instead of
pointer. The type is 824 bytes long so let's correct that and pass it by
pointer instead.

Fixes: Coverity CID 1438099
Fixes: Coverity CID 1438100
Fixes: Coverity CID 1438101
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Message-id: f3e04424723e0e222769991896cc82308fd23f76.1610751609.git.alistair.francis@wdc.com
2021-01-16 14:34:46 -08:00
Alistair Francis
3ed2b8ac2d hw/riscv: Use the CPU to determine if 32-bit
Instead of using string compares to determine if a RISC-V machine is
using 32-bit or 64-bit CPUs we can use the initalised CPUs. This avoids
us having to maintain a list of CPU names to compare against.

This commit also fixes the name of the function to match the
riscv_cpu_is_32bit() function.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 8ab7614e5df93ab5267788b73dcd75f9f5615e82.1608142916.git.alistair.francis@wdc.com
2020-12-17 21:56:44 -08:00
Alistair Francis
bd62c13ea8 hw/riscv: spike: Remove compile time XLEN checks
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Message-id: ac75037dd58061486de421a0fcd9ac8a92014607.1608142916.git.alistair.francis@wdc.com
2020-12-17 21:56:44 -08:00
Alistair Francis
7893677184 hw/riscv: boot: Remove compile time XLEN checks
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Message-id: 51e9842dbed1acceebad7f97bd3aae69aa1ac19e.1608142916.git.alistair.francis@wdc.com
2020-12-17 21:56:44 -08:00
Alistair Francis
dc4d4aaee3 riscv: spike: Remove target macro conditionals
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Message-id: 04ac7fba2348c92f296a5e6a9959ac72b77ae4c6.1608142916.git.alistair.francis@wdc.com
2020-12-17 21:56:44 -08:00
Alistair Francis
38bc4e34f2 hw/riscv: Load the kernel after the firmware
Instead of loading the kernel at a hardcoded start address, let's load
the kernel at the next aligned address after the end of the firmware.

This should have no impact for current users of OpenSBI, but will
allow loading a noMMU kernel at the start of memory.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Message-id: 46c00c4f15b42feb792090e3d74359e180a6d954.1602634524.git.alistair.francis@wdc.com
2020-10-22 12:00:22 -07:00
Bin Meng
70eb9f9cd1 hw/riscv: Move riscv_htif model to hw/char
This is an effort to clean up the hw/riscv directory. Ideally it
should only contain the RISC-V SoC / machine codes plus generic
codes. Let's move riscv_htif model to hw/char directory.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1599129623-68957-8-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-09-09 15:54:19 -07:00
Bin Meng
406fafd5d0 hw/riscv: Move sifive_clint model to hw/intc
This is an effort to clean up the hw/riscv directory. Ideally it
should only contain the RISC-V SoC / machine codes plus generic
codes. Let's move sifive_clint model to hw/intc directory.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1599129623-68957-6-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-09-09 15:54:19 -07:00
Bin Meng
a47ef6e93a hw/riscv: clint: Avoid using hard-coded timebase frequency
At present the CLINT timestamp is using a hard-coded timebase
frequency value SIFIVE_CLINT_TIMEBASE_FREQ. This might not be
true for all boards.

Add a new 'timebase-freq' property to the CLINT device, and
update various functions to accept this as a parameter.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1598924352-89526-16-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-09-09 15:54:19 -07:00
Anup Patel
a7172791e3 hw/riscv: spike: Allow creating multiple NUMA sockets
We extend RISC-V spike machine to allow creating a multi-socket
machine. Each RISC-V spike machine socket is a NUMA node having
a set of HARTs, a memory instance, and a CLINT instance. Other
devices are shared between all sockets. We also update the
generated device tree accordingly.

By default, NUMA multi-socket support is disabled for RISC-V spike
machine. To enable it, users can use "-numa" command-line options
of QEMU.

Example1: For two NUMA nodes with 2 CPUs each, append following
to command-line options: "-smp 4 -numa node -numa node"

Example2: For two NUMA nodes with 1 and 3 CPUs, append following
to command-line options:
"-smp 4 -numa node -numa node -numa cpu,node-id=0,core-id=0 \
-numa cpu,node-id=1,core-id=1 -numa cpu,node-id=1,core-id=2 \
-numa cpu,node-id=1,core-id=3"

The maximum number of sockets in a RISC-V spike machine is 8
but this limit can be changed in future.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Message-Id: <20200616032229.766089-5-anup.patel@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-08-25 09:11:35 -07:00
Anup Patel
3bf03f0899 hw/riscv: Allow creating multiple instances of CLINT
We extend CLINT emulation to allow multiple instances of CLINT in
a QEMU RISC-V machine. To achieve this, we remove first HART id
zero assumption from CLINT emulation.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Message-Id: <20200616032229.766089-2-anup.patel@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-08-25 09:11:35 -07:00
Bin Meng
fad144392a hw/riscv: spike: Change the default bios to use generic platform image
To keep sync with other RISC-V machines, change the default bios to
use generic platform fw_dynamic.elf image.

While we are here, add some comments to mention that using ELF files
for the Spike machine was intentional.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1596439832-29238-6-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-08-21 22:37:55 -07:00
Bin Meng
9eb8b14a70 hw/riscv: Modify MROM size to end at 0x10000
At present the size of Mask ROM for sifive_u / spike / virt machines
is set to 0x11000, which ends at an unusual address. This changes the
size to 0xf000 so that it ends at 0x10000.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1594289144-24723-1-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-07-13 17:25:37 -07:00
Atish Patra
dc144fe13d riscv: Add opensbi firmware dynamic support
OpenSBI is the default firmware in Qemu and has various firmware loading
options. Currently, qemu loader uses fw_jump which has a compile time
pre-defined address where fdt & kernel image must reside. This puts a
constraint on image size of the Linux kernel depending on the fdt location
and available memory. However, fw_dynamic allows the loader to specify
the next stage location (i.e. Linux kernel/U-Boot) in memory and other
configurable boot options available in OpenSBI.

Add support for OpenSBI dynamic firmware loading support. This doesn't
break existing setup and fw_jump will continue to work as it is. Any
other firmware will continue to work without any issues as long as it
doesn't expect anything specific from loader in "a2" register.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20200701183949.398134-4-atish.patra@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-07-13 17:25:37 -07:00
Atish Patra
66b1205bc5 RISC-V: Copy the fdt in dram instead of ROM
Currently, the fdt is copied to the ROM after the reset vector. The firmware
has to copy it to DRAM. Instead of this, directly copy the device tree to a
pre-computed dram address. The device tree load address should be as far as
possible from kernel and initrd images. That's why it is kept at the end of
the DRAM or 4GB whichever is lesser.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20200701183949.398134-3-atish.patra@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-07-13 17:25:37 -07:00
Atish Patra
43cf723adc riscv: Unify Qemu's reset vector code path
Currently, all riscv machines except sifive_u have identical reset vector
code implementations with memory addresses being different for all machines.
They can be easily combined into a single function in common code.

Move it to common function and let all the machines use the common function.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20200701183949.398134-2-atish.patra@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-07-13 17:25:37 -07:00
Markus Armbruster
5325cc34a2 qom: Put name parameter before value / visitor parameter
The object_property_set_FOO() setters take property name and value in
an unusual order:

    void object_property_set_FOO(Object *obj, FOO_TYPE value,
                                 const char *name, Error **errp)

Having to pass value before name feels grating.  Swap them.

Same for object_property_set(), object_property_get(), and
object_property_parse().

Convert callers with this Coccinelle script:

    @@
    identifier fun = {
        object_property_get, object_property_parse, object_property_set_str,
        object_property_set_link, object_property_set_bool,
        object_property_set_int, object_property_set_uint, object_property_set,
        object_property_set_qobject
    };
    expression obj, v, name, errp;
    @@
    -    fun(obj, v, name, errp)
    +    fun(obj, name, v, errp)

Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information".  Convert that one manually.

Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Convert manually.

Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused
by RXCPU being used both as typedef and function-like macro there.
Convert manually.  The other files using RXCPU that way don't need
conversion.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-27-armbru@redhat.com>
[Straightforwad conflict with commit 2336172d9b "audio: set default
value for pcspk.iobase property" resolved]
2020-07-10 15:18:08 +02:00
Markus Armbruster
0074fce61f sysbus: Convert qdev_set_parent_bus() use with Coccinelle, part 1
I'm converting from qdev_set_parent_bus()/realize to qdev_realize();
recent commit "qdev: Convert uses of qdev_set_parent_bus() with
Coccinelle" explains why.

sysbus_init_child_obj() is a wrapper around
object_initialize_child_with_props() and qdev_set_parent_bus().  It
passes no properties.

Convert sysbus_init_child_obj()/realize to object_initialize_child()/
qdev_realize().

Coccinelle script:

    @@
    expression parent, name, size, type, errp;
    expression child;
    symbol true;
    @@
    -    sysbus_init_child_obj(parent, name, &child, size, type);
    +    sysbus_init_child_XXX(parent, name, &child, size, type);
         ...
    -    object_property_set_bool(OBJECT(&child), true, "realized", errp);
    +    sysbus_realize(SYS_BUS_DEVICE(&child), errp);

    @@
    expression parent, name, size, type, errp;
    expression child;
    symbol true;
    @@
    -    sysbus_init_child_obj(parent, name, child, size, type);
    +    sysbus_init_child_XXX(parent, name, child, size, type);
         ...
    -    object_property_set_bool(OBJECT(child), true, "realized", errp);
    +    sysbus_realize(SYS_BUS_DEVICE(child), errp);

    @@
    expression parent, name, size, type;
    expression child;
    expression dev;
    expression expr;
    @@
    -    sysbus_init_child_obj(parent, name, child, size, type);
    +    sysbus_init_child_XXX(parent, name, child, size, type);
         ...
         dev = DEVICE(child);
         ... when != dev = expr;
    -    qdev_init_nofail(dev);
    +    sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);

    @@
    expression parent, propname, type;
    expression child;
    @@
    -    sysbus_init_child_XXX(parent, propname, child, sizeof(*child), type)
    +    object_initialize_child(parent, propname, child, type)

    @@
    expression parent, propname, type;
    expression child;
    @@
    -    sysbus_init_child_XXX(parent, propname, &child, sizeof(child), type)
    +    object_initialize_child(parent, propname, &child, type)

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-48-armbru@redhat.com>
2020-06-15 22:06:04 +02:00
Markus Armbruster
75a6ed875f riscv: Fix to put "riscv.hart_array" devices on sysbus
riscv_sifive_e_soc_init(), riscv_sifive_u_soc_init(),
spike_board_init(), spike_v1_10_0_board_init(),
spike_v1_09_1_board_init(), and riscv_virt_board_init() create
"riscv-hart_array" sysbus devices in a way that leaves them unplugged.

Create them the common way that puts them into the main system bus.
Affects machines sifive_e, sifive_u, spike, spike_v1.10, spike_v1.9.1,
and virt.  Visible in "info qtree", here's the change for sifive_e:

     bus: main-system-bus
       type System
    +  dev: riscv.hart_array, id ""
    +    num-harts = 1 (0x1)
    +    hartid-base = 0 (0x0)
    +    cpu-type = "sifive-e31-riscv-cpu"
       dev: sifive_soc.gpio, id ""

Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: qemu-riscv@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200609122339.937862-20-armbru@redhat.com>
2020-06-15 21:36:21 +02:00
Alistair Francis
26cd0362dd hw/riscv: spike: Remove deprecated ISA specific machines
The ISA specific Spike machines have been deprecated in QEMU since 4.1,
let's finally remove them.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2020-06-03 09:11:51 -07:00
Anup Patel
31e6d70485 hw/riscv/spike: Allow more than one CPUs
Currently, the upstream Spike ISA simulator allows more than
one CPUs so we update QEMU Spike machine on similar lines to
allow more than one CPUs.

The maximum number of CPUs for QEMU Spike machine is kept
same as QEMU Virt machine.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200427080644.168461-4-anup.patel@wdc.com
Message-Id: <20200427080644.168461-4-anup.patel@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-04-29 13:16:38 -07:00
Anup Patel
5b8a986350 hw/riscv/spike: Allow loading firmware separately using -bios option
This patch extends Spike machine support to allow loading OpenSBI
firmware (fw_jump.elf) separately using -bios option.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200427080644.168461-3-anup.patel@wdc.com
Message-Id: <20200427080644.168461-3-anup.patel@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-04-29 13:16:38 -07:00
Bin Meng
e883e9927a hw/riscv: Generate correct "mmu-type" for 32-bit machines
32-bit machine should have its CPU's "mmu-type" set to "riscv,sv32".

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1583585319-26603-1-git-send-email-bmeng.cn@gmail.com
Message-Id: <1583585319-26603-1-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-04-29 13:16:37 -07:00
Peter Maydell
2ac031d171 RISC-V Patches for the 5.0 Soft Freeze, Part 3
This pull request is almost entirely an implementation of the draft hypervisor
 extension.  This extension is still in draft and is expected to have
 incompatible changes before being frozen, but we've had good luck managing
 other RISC-V draft extensions in QEMU so far.
 
 Additionally, there's a fix to PCI addressing and some improvements to the
 M-mode timer.
 
 This boots linux and passes make check for me.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAl5do3gTHHBhbG1lckBk
 YWJiZWx0LmNvbQAKCRAuExnzX7sYiXhlD/9gtiGUT9QxnwygSAck2rLYJHN0rWLC
 7FRUar9egPDQ9rtwYKYM5H9fqFzfAxoWc2CTGPPxm75fS49gmEU06p6jBM3gdnNf
 WGXPdwefeBhWHxuS0LoQodoLybNmB1H+prrZA6LjoQFbp6BHEdOzSeGBvrUvoYuZ
 MCX++mA39h3gRvuXQdMYdPec2DdP07cMRirpXUgzlGtQ5WYUK8fNMDYDNkc0vKQc
 aDFDnL7KHRgKt74Fs9LnlEUuZg5r8vEsf4h80SWwBxqDLbSUf9Sh/F8K1abxDUEo
 tAm/45mPwTXEbFtEGG9f7uHD6ul0GyoTnybCf/1EQgWUtrm6yhw9b69UUdziOW7/
 LVFNjuX4zI175PP6pANb9QnPJnr+VRaCaBg+rXeju3OypkFNsQi6EwefkZFnn1Ye
 9hteMOKNaiuYY5qcNXqskJ3j/lnoPTzNpsZKbDinyXARr/tslRqZdn1MU8J9FVUS
 M+w0qVgrHPHojmFAbzwKQIONExApiKBkhrV+K5tkbxNNnp3tYBqoLXW8HYpu4MWh
 PavscLRVdLzzBJ7AQHnSNmJVlgiAz/VwJh/v0KNhfwrQzE0XAxcCyUQ/1NMLTkjY
 CGP3jxV3Wnxf6BQObqrUEUKG0UOOwWmGhYe28suVt8ni4c8eDvZ/z6P+yxFj/v9q
 cn03WY6J3beQlw==
 =5W7J
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/palmer/tags/riscv-for-master-5.0-sf3' into staging

RISC-V Patches for the 5.0 Soft Freeze, Part 3

This pull request is almost entirely an implementation of the draft hypervisor
extension.  This extension is still in draft and is expected to have
incompatible changes before being frozen, but we've had good luck managing
other RISC-V draft extensions in QEMU so far.

Additionally, there's a fix to PCI addressing and some improvements to the
M-mode timer.

This boots linux and passes make check for me.

# gpg: Signature made Tue 03 Mar 2020 00:23:20 GMT
# gpg:                using RSA key 2B3C3747446843B24A943A7A2E1319F35FBB1889
# gpg:                issuer "palmer@dabbelt.com"
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>" [unknown]
# gpg:                 aka "Palmer Dabbelt <palmer@sifive.com>" [unknown]
# gpg:                 aka "Palmer Dabbelt <palmerdabbelt@google.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88  6DF8 EF4C A150 2CCB AB41
#      Subkey fingerprint: 2B3C 3747 4468 43B2 4A94  3A7A 2E13 19F3 5FBB 1889

* remotes/palmer/tags/riscv-for-master-5.0-sf3: (38 commits)
  hw/riscv: Provide rdtime callback for TCG in CLINT emulation
  target/riscv: Emulate TIME CSRs for privileged mode
  riscv: virt: Allow PCI address 0
  target/riscv: Allow enabling the Hypervisor extension
  target/riscv: Add the MSTATUS_MPV_ISSET helper macro
  target/riscv: Add support for the 32-bit MSTATUSH CSR
  target/riscv: Set htval and mtval2 on execptions
  target/riscv: Raise the new execptions when 2nd stage translation fails
  target/riscv: Implement second stage MMU
  target/riscv: Allow specifying MMU stage
  target/riscv: Respect MPRV and SPRV for floating point ops
  target/riscv: Mark both sstatus and msstatus_hs as dirty
  target/riscv: Disable guest FP support based on virtual status
  target/riscv: Only set TB flags with FP status if enabled
  target/riscv: Remove the hret instruction
  target/riscv: Add hfence instructions
  target/riscv: Add Hypervisor trap return support
  target/riscv: Add hypvervisor trap support
  target/riscv: Generate illegal instruction on WFI when V=1
  target/ricsv: Flush the TLB on virtulisation mode changes
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-03-03 11:06:39 +00:00
Philippe Mathieu-Daudé
ea0ac7f6f8 hw: Make MachineClass::is_default a boolean type
There's no good reason for it to be type int, change it to bool.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200207161948.15972-3-philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-02-28 14:57:19 -05:00
Anup Patel
5f3616ccce
hw/riscv: Provide rdtime callback for TCG in CLINT emulation
This patch extends CLINT emulation to provide rdtime callback for
TCG. This rdtime callback will be called wheneven TIME CSRs are
read in privileged modes.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-02-27 13:46:37 -08:00
Zhuang, Siwei (Data61, Kensington NSW)
6478dd745d hw/riscv: Add optional symbol callback ptr to riscv_load_kernel()
This patch adds an optional function pointer, "sym_cb", to
riscv_load_kernel() which provides the possibility to access the symbol
table during kernel loading.

The pointer is ignored, if supplied with Image or uImage file.

The Spike board requires the access to locate the HTIF symbols.

Fixes: 0ac24d56c5 ("hw/riscv: Split out the boot functions")
Buglink: https://bugs.launchpad.net/qemu/+bug/1835827
Signed-off-by: Siwei Zhuang <siwei.zhuang@data61.csiro.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2019-11-25 12:34:52 -08:00
Bin Meng
7ae05377b8
riscv: hw: Drop "clock-frequency" property of cpu nodes
The "clock-frequency" property of cpu nodes isn't required. Drop it.

This is to keep in sync with Linux kernel commit below:
https://patchwork.kernel.org/patch/11133031/

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-10-28 07:47:27 -07:00
Bin Meng
24e398d06b
riscv: hw: Remove superfluous "linux, phandle" property
"linux,phandle" property is optional. Remove all instances in the
sifive_u, virt and spike machine device trees.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-09-17 08:42:44 -07:00
Markus Armbruster
46517dd497 Include sysemu/sysemu.h a lot less
In my "build everything" tree, changing sysemu/sysemu.h triggers a
recompile of some 5400 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

hw/qdev-core.h includes sysemu/sysemu.h since recent commit e965ffa70a
"qdev: add qdev_add_vm_change_state_handler()".  This is a bad idea:
hw/qdev-core.h is widely included.

Move the declaration of qdev_add_vm_change_state_handler() to
sysemu/sysemu.h, and drop the problematic include from hw/qdev-core.h.

Touching sysemu/sysemu.h now recompiles some 1800 objects.
qemu/uuid.h also drops from 5400 to 1800.  A few more headers show
smaller improvement: qemu/notify.h drops from 5600 to 5200,
qemu/timer.h from 5600 to 4500, and qapi/qapi-types-run-state.h from
5500 to 5000.

Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20190812052359.30071-28-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2019-08-16 13:31:53 +02:00
Markus Armbruster
650d103d3e Include hw/hw.h exactly where needed
In my "build everything" tree, changing hw/hw.h triggers a recompile
of some 2600 out of 6600 objects (not counting tests and objects that
don't depend on qemu/osdep.h).

The previous commits have left only the declaration of hw_error() in
hw/hw.h.  This permits dropping most of its inclusions.  Touching it
now recompiles less than 200 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-19-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-08-16 13:31:52 +02:00
Like Xu
c447312747 hw/riscv: Replace global smp variables with machine smp properties
The global smp variables in riscv are replaced with smp machine properties.

A local variable of the same name would be introduced in the declaration
phase if it's used widely in the context OR replace it on the spot if it's
only used once. No semantic changes.

Signed-off-by: Like Xu <like.xu@linux.intel.com>
Message-Id: <20190518205428.90532-6-like.xu@linux.intel.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
[ehabkost: fix spike_board_init()]
[ehabkost: fix riscv_sifive_e_soc_init()]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-07-05 17:07:42 -03:00
Alistair Francis
0ac24d56c5
hw/riscv: Split out the boot functions
Split the common RISC-V boot functions into a seperate file. This allows
us to share the common code.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-06-27 02:47:06 -07:00
Alistair Francis
cd69e3a60b
riscv: spike: Add a generic spike machine
Add a generic spike machine (not tied to a version) and deprecate the
spike mahines that are tied to a specific version. As we can now specify
the CPU via the command line we no londer need specific versions of the
spike machines.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-05-24 12:09:24 -07:00
Alistair Francis
40e46e516d
riscv: Ensure the kernel start address is correctly cast
Cast the kernel start address to the target bit length.

This ensures that we calculate the initrd offset to a valid address for
the architecture.

Steps to reproduce the original problem (reported by Alex):
  Build U-Boot for the virt machine for riscv32. Then run it with

    $ qemu-system-riscv32 -M virt -kernel u-boot -nographic -initrd <a file>

  You can find the initrd address with

    U-Boot# fdt addr $fdtcontroladdr
    U-Boot# fdt ls /chosen

  Then take a peek at that address:

    U-Boot# md.b <addr>

  and you will see that there is nothing there without this patch. The
  reason is that the binary was loaded to a negative address.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Suggested-by: Alexander Graf <agraf@suse.de>
Reported-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-02-11 15:56:22 -08:00
Liam Merwick
4366e1db16 elf: Add optional function ptr to load_elf() to parse ELF notes
This patch adds an optional function pointer, 'elf_note_fn', to
load_elf() which causes load_elf() to additionally parse any
ELF program headers of type PT_NOTE and check to see if the ELF
Note is of the type specified by the 'translate_opaque' arg.
If a matching ELF Note is found then the specfied function pointer
is called to process the ELF note.

Passing a NULL function pointer results in ELF Notes being skipped.

The first consumer of this functionality is the PVHboot support
which needs to read the XEN_ELFNOTE_PHYS32_ENTRY ELF Note while
loading the uncompressed kernel binary in order to discover the
boot entry address for the x86/HVM direct boot ABI.

Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-05 16:50:16 +01:00
Alistair Francis
00a014ac01
riscv: spike: Fix memory leak in the board init
Coverity caught a malloc() call that was never freed. This patch ensures
that we free the memory but also updates the allocation to use
g_strdup_printf() instead of malloc().

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-11-08 08:41:06 -08:00
Michael Clark
7c28f4da20
RISC-V: Don't add NULL bootargs to device-tree
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-17 13:02:30 -07:00
Peter Maydell
2f831d0498 Error reporting & miscellaneous patches for 2018-09-24
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJbqP/iAAoJEDhwtADrkYZTDTQP/jidzPBq+9SbQTkP3/6DNdyq
 3amvEA0lNlowGz+VQtTPjG1Sw+wr5PRFFjthueX4EXCgTih9db5Rd6Daiqt9uuh4
 ipep7OVTcyMOErHzyosIIwQAte2ERiunpwXOAcahxInJ4XBlxyJAiJTZXHQb1v+u
 zKa3PpKi3fLcqBs3wKn8AJmp5HLTYOM6/LK870S65Rzx20AbifBH/6yQPkdrMAL2
 lw204RasdYCiJo045n6pwZ0mBMT1d33VAmSqPUaeoOWabLCzmbZvcQNwUqtVleh6
 5IoAxjFhrixksdg67+HMyFyJH5Nt8SkTeOpqN4D+dpj7y3BLGSUzvV3mBEBSfinm
 nvyfjVkxX4xRNw4mgm03H2qg5g3FACDQVz+g5uLDAZELlz9POCnOTFJuf/n++u3q
 zcxOqCg2U99KiyF51PMRu9yPH/zDNNFxmrEY7dFkuAycS3EWk+VK63pXnNUkx3xe
 0T8uZA4Cvhn84hLNDFyX/DzILKFb0bRSUw6zAhUYb44oD6roFlp8rgTauNECa9CO
 GcgvJKXyk6mMDEHkSKSWy51doVEn0vqqzEc9w6/QPwxsXNMUWXEQAv/BVaK7To/J
 JlSxC/C/jda4pt6zDFks6grac8AT6LBIFUrp6HpF84gSldEF4OuFbJhg9iuTyarz
 ea5pvvZGJHQvnLATg5kK
 =2oaJ
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2018-09-24' into staging

Error reporting & miscellaneous patches for 2018-09-24

# gpg: Signature made Mon 24 Sep 2018 16:16:50 BST
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-error-2018-09-24:
  MAINTAINERS: Fix F: patterns that don't match anything
  Drop "qemu:" prefix from error_report() arguments
  qemu-error: make use of {error, warn}_report_once_cond
  qemu-error: add {error, warn}_report_once_cond

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-09-25 11:37:39 +01:00
Mao Zhongyi
371b74e221 Drop "qemu:" prefix from error_report() arguments
error_report and friends already add a "qemu-system-xxx" prefix
to the string, so a "qemu:" prefix is redundant in the string.
Just drop it.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1537495530-580-1-git-send-email-maozhongyi@cmss.chinamobile.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-09-24 17:13:07 +02:00
Alistair Francis
117caacf9b hw/riscv/spike: Set the soc device tree node as a simple-bus
To allow Linux to enumerate devices on the /soc/ node set it as a
"simple-bus".

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2018-09-05 09:58:38 -07:00
Alistair Francis
8ff62f6aa0 spike: Fix crash when introspecting the device
Use the new object_initialize_child() and sysbus_init_child_obj() to
fix the issue.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Suggested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2018-07-19 09:05:48 -07:00
Michael Clark
5aec3247c1
RISC-V: Mark ROM read-only after copying in code
The sifive_u machine already marks its ROM readonly however
it has the wrong base address for its mask ROM. This patch
fixes the sifive_u mask ROM base address.

This commit makes all other boards consistently use mask_rom
as the variable name for their ROMs. Boards that use device
tree now check that that the device tree fits in the assigned
ROM space using the new qemu_fdt_totalsize(void *fdt)
interface, adding a bounds check and error message. This
can detect truncation.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Alistair Francis <Alistair.Francis@wdc.com>
2018-05-06 10:54:21 +12:00
Michael Clark
89854803ce
RISC-V: Remove EM_RISCV ELF_MACHINE indirection
Pointless indirection. Other ports use EM_ constants directly.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2018-05-06 10:39:38 +12:00
Michael Clark
42b3a4b7cc
RISC-V: Remove unused class definitions
Removes a whole lot of unnecessary boilerplate code. Machines
don't need to be objects. The expansion of the SOC object model
for the RISC-V machines will happen in the future as SiFive
plans to add their FE310 and FU540 SOCs to QEMU. However, it
seems that this present boilerplate is complete unnecessary.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2018-05-06 10:39:38 +12:00
Michael Clark
b7938980fb
RISC-V: Remove identity_translate from load_elf
When load_elf is called with NULL as an argument to the
address translate callback, it does an identity translation.
This commit removes the redundant identity_translate callback.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2018-05-06 10:39:38 +12:00
Michael Clark
2a8756ed7d
RISC-V: Replace hardcoded constants with enum values
The RISC-V device-tree code has a number of hard-coded
constants and this change moves them into header enums.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2018-05-06 10:39:38 +12:00
Peter Maydell
9bca0edb28 Change references to serial_hds[] to serial_hd()
Change all the uses of serial_hds[] to go via the new
serial_hd() function. Code change produced with:
 find hw -name '*.[ch]' | xargs sed -i -e 's/serial_hds\[\([^]]*\)\]/serial_hd(\1)/g'

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20180420145249.32435-8-peter.maydell@linaro.org
2018-04-26 13:57:00 +01:00
Michael Clark
5b4beba124
RISC-V Spike Machines
RISC-V machines compatble with Spike aka riscv-isa-sim, the RISC-V
Instruction Set Simulator. The following machines are implemented:

- 'spike_v1.9.1'; HTIF console, config-string, Privileged ISA Version 1.9.1
- 'spike_v1.10'; HTIF console, device-tree, Privileged ISA Version 1.10

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00