Commit graph

68 commits

Author SHA1 Message Date
Anup Patel
ef19131b80 riscv: qemu: Implement is_flash_available() for MTD NOR
Currently, if MTD NOR is enabled then U-Boot tries to issue flash
commands even when CFI flash DT node is not present. This causes
access fault on RISC-V emulators or ISS which do not emulate CFI
flash. To handle this issue, we implement is_flash_available() for
qemu-riscv board which will return 1 only if CFI flash DT node is
present.

Fixes: d248627f9d ("riscv: qemu: Enable MTD NOR flash support")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2022-02-10 11:18:13 +08:00
Anup Patel
be7ce1a818 riscv: qemu: Enable HTIF console support
Enable support for HTIF console so that we can use QEMU RISC-V U-Boot
on RISC-V emulators and ISS having it.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2022-02-10 11:18:12 +08:00
Heinrich Schuchardt
185f812c41 doc: replace @return by Return:
Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-01-19 18:11:34 +01:00
Simon Glass
239d22c795 fdt: Enable OF_HAS_PRIOR_STAGE for most boards with OF_BOARD
Use this new Kconfig instead of OF_BOARD, so we know for sure which boards
obtain their devicetree from a prior stage. Leave sandbox alone since it
does not. Also don't touch xilinx_versal_virt since it does not have a
specific TARGET Kconfig.

This option implies OF_BOARD for now, but with future work standard
passage may be used instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Add rpi_4_32b and rpi_arm64 to the list of boards converted]
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-23 11:19:17 -05:00
Vincent Stehlé
270eeb6871 qemu: common: Fix build with update capsule
The common emulation Makefile has a dependency on a non-existent
qemu_capsule.o when building with support for capsule update enabled
(CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y).
The code which was in qemu_capsule.c has been completely moved to
lib/efi_loader/efi_capsule.c by commit 7a6fb28c8e ("efi_loader: capsule:
add back efi_get_public_key_data()").
Remove the false dependency.

This fixes the following build error:

  make[1]: *** No rule to make target 'board/emulation/common/qemu_capsule.o', needed by 'board/emulation/common/built-in.o'.  Stop.

Fixes: commit 47a25e81d3 ("Revert "efi_capsule: Move signature from DTB to .rodata"")
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Cc: Simon Glass <sjg@chromium.org>
2021-11-29 11:15:37 -05:00
Ilias Apalodimas
e7fb789612 sandbox: Remove OF_HOSTFILE
OF_HOSTFILE is used on sandbox configs only.  Although it's pretty
unique and not causing any confusions,  we are better of having simpler
config options for the DTB.

So let's replace that with the existing OF_BOARD.  U-Boot would then
have only three config options for the DTB origin.
- OF_SEPARATE, build separately from U-Boot
- OF_BOARD, board specific way of providing the DTB
- OF_EMBED embedded in the u-boot binary(should not be used in production

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-10-27 16:38:26 -04:00
Ilias Apalodimas
2e8d2f8843 riscv: Remove OF_PRIOR_STAGE from RISC-V boards
At some point back in 2018 prior_stage_fdt_address and OF_PRIOR_STAGE got
introduced,  in order to support a DTB handed over by an earlier stage boo
loader.  However we have another option in the Kconfig (OF_BOARD) which has
identical semantics.

On RISC-V some of the boards pick up the DTB from a1 and copy it in their
private gd_t.  Apart from that they copy it to prior_stage_fdt_address,  if
the Kconfig option is selected, which is unnecessary.

So let's switch the config option for those boards to OF_BOARD and define
the required board_fdt_blob_setup() for them.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
2021-10-18 13:19:50 -04:00
Simon Glass
47a25e81d3 Revert "efi_capsule: Move signature from DTB to .rodata"
This was unfortunately applied despite much discussion about it beiong
the wrong way to implement this feature.

Revert it before too many other things are built on top of it.

This reverts commit ddf67daac3.
Signed-off-by: Simon Glass <sjg@chromium.org>
2021-09-18 03:47:50 -06:00
Simon Glass
3232bdf0b3 pci: Drop DM_PCI
This option has not effect now. Drop it, using PCI instead where needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-09-13 18:23:13 -04:00
Bin Meng
d248627f9d riscv: qemu: Enable MTD NOR flash support
Enable support to the 2 NOR flashes on the QEMU RISC-V virt machine.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-08-11 10:36:10 +02:00
Ilias Apalodimas
ddf67daac3 efi_capsule: Move signature from DTB to .rodata
The capsule signature is now part of our DTB.  This is problematic when a
user is allowed to change/fixup that DTB from U-Boots command line since he
can overwrite the signature as well.
So Instead of adding the key on the DTB, embed it in the u-boot binary it
self as part of it's .rodata.  This assumes that the U-Boot binary we load
is authenticated by a previous boot stage loader.

Reviewed-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Tested-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-07-18 14:43:56 +02:00
Sughosh Ganu
6a2e26b95f efi_loader: capsule: Remove the check for capsule_authentication_enabled environment variable
The current capsule authentication code checks if the environment
variable capsule_authentication_enabled is set, for authenticating the
capsule. This is in addition to the check for the config symbol
CONFIG_EFI_CAPSULE_AUTHENTICATE. Remove the check for the environment
variable. The capsule will now be authenticated if the config symbol
is set.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviwed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-05-18 12:36:12 +02:00
Bin Meng
b3398993ba ppc: qemu: Create a virtual memory mapping of the platform bus
QEMU ppce500 target can dynamically instantiate an eTSEC device on
a platform bus if "-device eTSEC" is given to QEMU. It is presented
as a "simple-bus" in the device tree, with an additional compatible
string "qemu,platform".

Let's create a virtual memory mapping for it in misc_init_r(), in
preparation to adding eTSEC support.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2021-04-15 14:22:17 +05:30
Asherah Connor
0219279381 qemu: arm: select QFW, MMIO on qemu-arm
Select CMD_QFW and QFW_MMIO in the qemu-arm board (covers arm and
arm64).

Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-04-12 17:45:40 -04:00
Asherah Connor
5b0b43e0e2 x86: qemu: move QFW to its own uclass
We move qfw into its own uclass and split the PIO functions into a
specific driver for that uclass.  The PIO driver is selected in the
qemu-x86 board config (this covers x86 and x86_64).

include/qfw.h is cleaned up and documentation added.

Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2021-04-12 17:44:55 -04:00
Bin Meng
1d636a0cd5 ppc: qemu: Move board directory from board/freescale to board/emulation
board/emulation is the place for other QEMU targets like x86, arm,
riscv. Let's move the qemu-ppce500 board codes there.

List me as a co-maintainer for this board.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2021-03-05 10:25:44 +05:30
Simon Glass
401d1c4f5d common: Drop asm/global_data.h from common header
Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-02-02 15:33:42 -05:00
Sughosh Ganu
04be98bd6b efi: capsule: Add support for uefi capsule authentication
Add support for authenticating uefi capsules. Most of the signature
verification functionality is shared with the uefi secure boot
feature.

The root certificate containing the public key used for the signature
verification is stored as part of the device tree blob. The root
certificate is stored as an efi signature list(esl) file -- this file
contains the x509 certificate which is the root certificate.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-12-31 14:41:31 +01:00
Sughosh Ganu
cc02f15faa qemu: common: Set dfu_alt_info variable for the platform
The dfu framework uses the dfu_alt_info environment variable to get
information that is needed for performing the firmware update. Add
logic to set the dfu_alt_info for the qemu arm64 platform to reflect
the two mtd partitions created for the u-boot env and the firmware
image. This can be subsequently extended for other qemu architectures
which need this variable set.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-12-31 14:41:31 +01:00
Sughosh Ganu
c89a9873fd qemu: common: Add support for dynamic mtdparts for the platform
Add support for setting the default values for mtd partitions on the
platform. This would be used for updating the firmware image using
uefi capsule update with the dfu mtd backend driver.

Currently, values have been defined for the qemu arm64 platform, with
default values defined for the mtd partitions based on the NOR
flash. This can be subsequently extended for other qemu architectures
which need mtdparts set.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-12-31 14:41:31 +01:00
Sughosh Ganu
e1ee06dde7 qemu: arm: Initialise virtio devices in board_late_init
On the qemu arm platform, the virtio devices are initialised in the
board_init function, which gets called before the initr_pci. With
this sequence, the virtio block devices on the pci bus are not
initialised. Move the initialisation of the virtio devices to
board_late_init which gets called after the call to initr_pci.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2020-12-31 14:41:31 +01:00
Heinrich Schuchardt
2873ca2a78 riscv: enable SATA disk on QEMU RISC-V
Allow attaching a virtual SATA disk to QEMU RISC-V by implying
AHCI, AHCI_PCI, CMD_SCSI, DM_SCSI, PCI_INIT_R, SCSI, SCSI_AHCI.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-11-17 15:09:16 +08:00
Heinrich Schuchardt
19dd274b56 riscv: sort SPECIFIC_OPTIONS
Sort implied options in BOARD_SPECIFIC_OPTIONS in the same sequence as in
.config.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-11-17 15:09:16 +08:00
Andy Shevchenko
365a581c1c x86: qemu: Remove dead code
start.S does nothing and can be safely removed. Makefile is still being used
by the build system, so simply replace the rule in it. We use stub C-file
like it's done for other boards.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-01 17:00:27 +08:00
Ard Biesheuvel
2e2c2a5e72 arm: qemu: override flash accessors to use virtualizable instructions
Some instructions in the ARM ISA have multiple output registers, such
as ldrd/ldp (load pair), where two registers are loaded from memory,
but also ldr with indexing, where the memory base register is incremented
as well when the value is loaded to the destination register.

MMIO emulation under KVM is based on using the architecturally defined
syndrome information that is provided when an exception is taken to the
hypervisor. This syndrome information describes whether the instruction
that triggered the exception is a load or a store, what the faulting
address was, and which register was the destination register.

This syndrome information can only describe one destination register, and
when the trapping instruction is one with multiple outputs, KVM throws an
error like

  kvm [615929]: Data abort outside memslots with no valid syndrome info

on the host and kills the QEMU process with the following error:

  U-Boot 2020.07-rc3-00208-g88bd5b179360-dirty (Jun 06 2020 - 11:59:22 +0200)

  DRAM:  1 GiB
  Flash: error: kvm run failed Function not implemented
  R00=00000001 R01=00000040 R02=7ee0ce20 R03=00000000
  R04=7ffd9eec R05=00000004 R06=7ffda3f8 R07=00000055
  R08=7ffd9eec R09=7ef0ded0 R10=7ee0ce20 R11=00000000
  R12=00000004 R13=7ee0cdf8 R14=00000000 R15=7ff72d08
  PSR=200001d3 --C- A svc32
  QEMU: Terminated

This means that, in order to run U-Boot in QEMU under KVM, we need to
avoid such instructions when accessing emulated devices. For the flash
in particular, which is a hybrid between a ROM (backed by a read-only
KVM memslot) when in array mode, and an emulated MMIO device (when in
write mode), we need to take care to only use instructions that KVM can
deal with when they trap.

So override the flash read accessors that are used when running on QEMU
under KVM. Note that the the 64-bit wide read and write accessors have
been omitted: they are never used when running under QEMU given that it
does not emulate CFI flash that supports it.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
2020-07-29 08:43:40 -04:00
Ard Biesheuvel
3fa914af82 arm: qemu: implement enable_caches()
Add an override for enable_caches to enable the I and D caches, along
with the cached 1:1 mapping of all of DRAM. This is needed for running
U-Boot under virtualization with QEMU/kvm.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
2020-07-29 08:43:40 -04:00
Bin Meng
a0cc38ab44 riscv: qemu: Add syscon reboot and poweroff support
This adds syscon reboot and poweroff support to QEMU RISC-V.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-07-24 14:55:55 +08:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
691d719db7 common: Drop init.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Simon Glass
4d72caa5b9 common: Drop image.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Lukas Auer
846b612014 Revert "riscv: qemu: clear kernel-start/-end in device tree as workaround for BBL"
The commit was added as a workaround required in QEMU when using BBL as
the supervisor binary interface (SBI) for Linux. We are now using
OpenSBI to provide the SBI, the workaround is therefore not required
anymore and can be removed.

This reverts commit 897206c5cc.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-04-23 10:13:35 +08:00
Sughosh Ganu
f552fa496c efi: qemu: arm64: Add efi_rng_protocol implementation for the platform
Add support for the EFI_RNG_PROTOCOL routines for the qemu arm64
platform. EFI_RNG_PROTOCOL is an uefi boottime service which is
invoked by the efi stub in the kernel for getting random seed for
kaslr.

The routines are platform specific, and use the virtio-rng device on
the platform to get random data.

The feature can be enabled through the following config
CONFIG_EFI_RNG_PROTOCOL

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Changed SPDX header to use /* instead of //.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-01-07 18:08:22 +01:00
Simon Glass
5255932f01 common: Move some board functions out of common.h
A number of board function belong in init.h with the others. Move them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:25:21 -05:00
Bin Meng
44016bc598 riscv: qemu: Fix kconfig build warning
When 'make qemu-riscv64_defconfig', there is a build warning:

  board/emulation/qemu-riscv/Kconfig:24:
  warning: config symbol defined without type

Fix it by specifying the config symbol type to 'hex'.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-08-26 16:09:02 +08:00
Lukas Auer
e456a81935 riscv: qemu: add SPL configuration
Add two new configurations (qemu-riscv{32,64}_spl_defconfig) with SPL
enabled for RISC-V QEMU. QEMU does not require SPL to run U-Boot. The
configurations are meant to help the development of SPL on RISC-V.

The configurations enable RAM as the only SPL boot device. Images must
be loaded at address 0x80200000. In the default boot flow, U-Boot SPL
starts in machine mode, loads the OpenSBI FW_DYNAMIC firmware and U-Boot
proper from the supplied FIT image, and starts OpenSBI. U-Boot proper is
then started in supervisor mode by OpenSBI.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-08-26 16:07:42 +08:00
Simon Glass
c7694dd483 env: Move env_set_hex() to env.h
Move env_set_hex() over to the new header file along with env_set_addr()
which uses it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
David Abdurachmanov
1493b140e4 qemu-riscv: enable VIRTIO_PCI
libvirt v.5.3.0 with QEMU 4.0.0 or above uses PCI automatically and
thus devices (network, storage, etc) are connected via PCI.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-07-18 11:31:28 -04:00
Bin Meng
e64db0d92e riscv: qemu: Enable e1000 and nvme support
Since we have added the PCI support to the 'virt' target, enable
e1000 and NVME as alternate network and storage devices for these
virtio based devices.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Tested-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-06-05 13:19:15 +08:00
Bin Meng
cd6b6199ea riscv: qemu: Enable PCI host ECAM generic driver
QEMU 4.0.0 'virt' target integrates a generic ECAM PCI host.
Enable the driver for it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Tested-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-06-05 13:19:15 +08:00
Anup Patel
8aa278df0a riscv: qemu: Use correct SYS_TEXT_BASE for S-mode on 32bit system
For 32bit system, the OpenSBI (or BBL) will jump to 0x80400000 address
in S-mode whereas for 64bit system it will jump to 0x80200000 address
in S-mode.

Currently, the S-mode U-Boot sets SYS_TEXT_BASE to 0x80200000 for both
32bit and 64bit system. This breaks S-mode U-Boot for 32bit system.

This patch sets different SYS_TEXT_BASE for 32bit and 64bit system so
that S-mode U-Boot works fine for both.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Tested-by: Karsten Merker <merker@debian.org>
2019-05-09 16:46:24 +08:00
Lukas Auer
d0a8fd3e4d riscv: qemu: enable SMP
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-08 09:44:26 +08:00
Anup Patel
fdff1f96a6 riscv: Rename cpu/qemu to cpu/generic
The QEMU CPU support under arch/riscv is pretty much generic
and works fine for SiFive Unleashed as well. In fact, there
will be quite a few RISC-V SOCs for which QEMU CPU support
will work fine.

This patch renames cpu/qemu to cpu/generic to indicate the
above fact. If there are SOC specific errata workarounds
required in cpu/generic then those can be done at runtime
in cpu/generic based on CPU vendor specific DT compatible
string.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-27 09:12:33 +08:00
Anup Patel
9acaf60bfd riscv: qemu: Imply SIFIVE_SERIAL for emulation
This patch enables SiFive UART driver for QEMU RISC-V emulation
by implying SIFIVE_SERIAL on BOARD_SPECIFIC_OPTIONS.

Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-18 09:56:54 +08:00
Bin Meng
84304d4866 riscv: qemu: Add platform-specific Kconfig options
Add the QEMU RISC-V platform-specific Kconfig options, to include
CPU and timer drivers.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
2018-12-18 09:56:27 +08:00
Anup Patel
4c60113647 riscv: Add S-mode defconfigs for QEMU virt machine
This patch adds S-mode defconfigs for QEMU virt machine so
that we can run u-boot in S-mode on QEMU using M-mode runtime
firmware (BBL or equivalent).

Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2018-12-05 14:14:04 +08:00
Anup Patel
ef8c3d3fce riscv: qemu: Use different SYS_TEXT_BASE for S-mode
When u-boot runs in S-mode, the M-mode runtime firmware
(BBL or equivalent) uses memory range in 0x80000000 to
0x80200000. Due to this, we cannot use 0x80000000 as
SYS_TEXT_BASE when running in S-mode. Instead for S-mode,
we use 0x80200000 as SYS_TEXT_BASE.

Even Linux RISC-V kernel ignores/reserves memory range
0x80000000 to 0x80200000 because it runs in S-mode.

Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2018-12-05 14:13:59 +08:00
Lukas Auer
897206c5cc riscv: qemu: clear kernel-start/-end in device tree as workaround for BBL
QEMU specifies the location of Linux (supplied with the -kernel
argument) in the device tree using the riscv,kernel-start and
riscv,kernel-end properties. We currently rely on the SBI implementation
of BBL to run Linux and therefore embed Linux as payload in BBL. This
causes an issue, because BBL detects the kernel properties in the device
tree and ignores the Linux payload as a result.
Work around this issue by clearing the kernel properties in the device
tree before booting Linux.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-11-26 13:57:33 +08:00
Lukas Auer
66ffe5783b riscv: qemu: detect and boot the kernel passed by QEMU
QEMU embeds the location of the kernel image in the device tree. Store
this address in the environment as variable kernel_start. It is used in
the board-local distro boot command QEMU to boot the kernel with the
U-Boot device tree. The QEMU boot command is added as the first boot
target device.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
2018-11-26 13:57:33 +08:00
Lukas Auer
6e10e94ff7 riscv: qemu: use device tree passed by prior boot stage
QEMU provides a device tree, which is passed to U-Boot using register
a1. We are now able to directly select the device tree with the
configuration CONFIG_OF_PRIOR_STAGE. Replace the hard-coded address in
qemu-riscv with it.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
2018-11-26 13:57:32 +08:00
Bin Meng
c80c7798cf x86: qemu: Imply virtio PCI transport and device drivers
Add virtio drivers for QEMU x86 targets.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:28 -08:00