Right now U-Boot runs all the time from the same address where it is loaded
but going to full relocation code starting address doesn't need to be fixed
and can be simply discovered from reading PC register. That's why use r20
to get PC address and subtract offset from the beginning to get starting
address.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/044b727c33dfbe662f68512d0da0775a4805f360.1655299267.git.michal.simek@amd.com
Enable u-boot.elf recreation from u-boot.bin to prepare for removing manul
relocation. Enable option for big endian configuration but it is not used
too much that's why it is completely untested.
By supporting this system there is a need to define LITTLE/BIG endian
Kconfig options to pass -EL/-EB flags.
Full command line for u-boot.elf recreation looks like this:
microblazeel-xilinx-linux-gnu-objcopy -I binary -B microblaze \
-O elf32-microblazeel u-boot.bin u-boot-elf.o
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/7e242a519fcd1c693b9103c5599b515af555ca43.1655299267.git.michal.simek@amd.com
CONFIG_SYS_INIT_SP_OFFSET macro place stack to TEXT_BASE - SYS_MALLOC_F_LEN
but there is no reason to do it now because board_init_f_alloc_reserve()
returns exact location where stack should be. That's why stack location is
calculated at run time and there is no need to hardcode it via macro. This
change will help with placing U-Boot to any address.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/e9aee69646e022fd8a96cbee2d2a07ab81fb6e05.1655299267.git.michal.simek@amd.com
When U-Boot starts stack protection can be already enabled that's why setup
the lowest possible SLR value which is address 0. And the highest possible
stack in front of U-Boot. That's why you should never load U-Boot to the
beginning of DDR. There must be some space reserved. Code is using this
location for early malloc space, early global data and stack.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/86b9748bad12142659804d6381bc6bbf20be44f1.1655299267.git.michal.simek@amd.com
There is no need to pass section information via parameters.
Let's read text base and rela start/end directly from elf.
It will help with reading other information from ELF for others
architecture. Input to relocate-rela is u-boot binary and u-boot ELF.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/ab7ae14a6e058722e8c608089729e98edf20a08d.1655299267.git.michal.simek@amd.com
Add support to handle 'output-enable' and 'bias-high-impedance'
configurations. DT property output-enable brings out the pins from
tri-state, whereas bias-high-impedance changes the pins state to
tri-state.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/1a02cd41d183d397ebce23c497178281c7286692.1655286745.git.michal.simek@amd.com
Do not use 0 as address for memory because of the special meaning for
pointers (null pointer). Change the spl bss start address to the second
page.
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Link: https://lore.kernel.org/r/20220607074314.27125-1-stefan.herbrechtsmeier-oss@weidmueller.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Board is using kv260 design for couple of parts defined by spec like i2c
eeproms, ina260, uart, etc.
Board has 4 gems. One gem connected via PS SGMII(GT), another PS RGMII(MIO)
and 2 via EMIO. First two shares the same MIO lines for PHYs. PL based one
have separate EMIO lines via PL.
Also two USB 3.0 with usb hubs are present. USB phys and USB hubs should
have separate reset line. The first usb0 hub also has USB-SD controller
(usb2244) connected to port 0.
To test compatibility with k26 you can run:
fdtoverlay -o /tmp/output.dtb -i arch/arm/dts/zynqmp-sm-k26-revA.dtb \
arch/arm/dts/zynqmp-sck-kr-g-revA.dtbo
Also add support for kr260-revB board. Based on FRU it is revision B
but schematics can be label as revA03.
Changes in revB are:
- SFP light
- GEM2/3 TX_CLK fixes
- PMOD/RPI connector fixes
- Replace si5332 with oscilators
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/dac2ee1826e73b89c8cc1e430354eb43d291f675.1652870941.git.michal.simek@amd.com
Add support to switch to EL1 and load an EL1 app from U-Boot which is
executing at EL2 or EL3 in aarch64 mode.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220506055345.1921-1-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
CONFIG_DM_ETH_PHY enables support to utilize generic ethernet phy
framework. Though if ethernet PHY node is in other ethernet node, it
will use shared MDIO to access the PHY of other ethernet. Move ethernet
print info statement from plat function to probe function, as phyaddr is
not enumerated when CONFIG_DM_ETH_PHY is enabled.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/93e11ccca56b6e52b2dcc283d08d5042537f828f.1652181968.git.michal.simek@amd.com
CONFIG_DM_ETH_PHY enables support to utilize generic ethernet phy
framework. Though if ethernet PHY node is in other ethernet node, it
will use shared MDIO to access the PHY of other ethernet. Move ethernet
print info statement from plat function to probe function, as phyaddr is
not enumerated when CONFIG_DM_ETH_PHY is enabled.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/ecfec78234233fefdc172c141c207b2d78ef70c5.1652181968.git.michal.simek@amd.com
This consists of two slightly related series. For the first, to quote
the author:
This series implements 2 features in driver/firmware/scmi.
First, a single change adds support for SCMI OP-TEE transport to
use OP-TEE native shared memory. See the 1st patch in this series:
"firmware: scmi: optee: use TEE shared memory for SCMI messages".
Then come changes for supporting multi-channel in the SCMI drivers.
I've split the implementation in 11 several small incremental changes
in the hope it helps the review. Few minor fixup commits are also
inserted in the series.
And the second series implements some smccc improvements.
To quote the author:
This series introduces ASAN and a basic fuzzing infrastructure that
works with sandbox. The example fuzz test towards the end of the series
will find something pretty quickly. That something is fixed by the
series "virtio: Harden and test vring" that needs to be applied for the
final patch in this series.
There is some refactoring to stop using '.' prefixed sections. ELF
defines sections with names that contain anything that isn't
alphanumeric or an underscore as being for system use which means
clang's ASAN instrumentation happily add redzones between the contained
objects. That's not what we want for things like linker lists where the
linker script has carefully placed the sections contiguously. By
renaming the sections, clang sees them as user sections and doesn't add
instrumentation.
ASAN is left disabled by default as there are still some tests that it
triggers on and will need some more investigation to fix. It can be
enabled with CONFIG_ASAN or passing `-a ASAN` to buildman.
Adds random number generator driver using Arm SMCCC TRNG interface to
get entropy bytes from secure monitor. The driver registers as an
Arm SMCCC feature driver to allow PSCI driver to bind a device for
when secure monitor exposes RNG support from Arm SMCCC TRNG interface.
Cc: Sughosh Ganu <sughosh.ganu@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Use PSCI device to query Arm SMCCC v1.1 support from secure monitor
and if so, bind drivers for the SMCCC features that monitor supports.
Drivers willing to be bound from Arm SMCCC features discovery can use
macro ARM_SMCCC_FEATURE_DRIVER() to register to smccc feature discovery,
providing target driver name and a callback function that returns
whether or not the SMCCC feature is supported by the system.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Defines function IDs ARM_SMCCC_ARCH_FEATURES used to query SMCCC feature
support, applicable from Arm SMCCC v1.1 specification.
Defines macro ARM_SMCCC_RET_NOT_SUPPORTED as generic return identifier
for when a SMCCC feature is not supported.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Updates .process_msg operators of the SCMI transport drivers that
supports multi-channel to use it now that drivers do provide
the reference through channel argument. These are the mailbox
agent, the optee agent and the smccc agent.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Update SCMI regulator controller driver to get its assigned SCMI channel
during initialization. This change allows SCMI voltage domain protocol
to use a dedicated channel when defined in the DT. The reference is
saved in SCMI regulator controller driver private data.
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Update SCMI reset controller driver to get its assigned SCMI channel
during initialization. This change allows SCMI reset domain protocol
to use a dedicated channel when defined in the DT. The reference is
saved in SCMI reset controller driver private data.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Update SCMI clock driver to get its assigned SCMI channel during
initialization. This change allows SCMI clock protocol to use a
dedicated channel when defined in the DT. The reference is saved
in SCMI clock driver private data.
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Implements multi SCMI channel support in OP-TEE SCMI transport. An
SCMI protocol may use a dedicated channel, specified by the DT.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Updates SCMI SMCCC transport driver to get SCMI channel reference
at initialization and use when posting SCMI messages.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Updates SCMI mailbox transport driver to get SCMI channel reference
at initialization and use when posting SCMI messages.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Adds resources for SCMI protocols to possibly use a dedicated SCMI
channel instead of the default channel allocated by the SCMI agent
during initialization. As per DT binding documentation, some SCMI
transports can define a specific SCMI communication channel for
given SCMI protocols. It allows SCMI protocols to pass messages
concurrently each other.
This change introduces new scmi agent uclass API function
devm_scmi_of_get_channel() for SCMI drivers probe sequences to get
a reference to the SCMI channel assigned to its related SCMI protocol.
The function queries the channel reference to its SCMI transport driver
through new scmi agent uclass operator .of_get_channel that uses Device
Tree information from related SCMI agent node.
Operator .of_get_channel returns a reference to the SCMI channel
assigned to SCMI protocol used by the caller device. SCMI transport
drivers that do not support multi-channel are not mandated to register
this operator. When so, API function devm_scmi_of_get_channel() returns
NULL and SCMI transport driver are expected to retrieve by their own
means the reference to the unique SCMI channel, for example using
platform data as these drivers currently do in U-Boot source tree.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Defines local helper function find_scmi_transport_device() with the
instructions to find the SCMI transport device from a SCMI protocol
device.
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Changes SCMI driver API function devm_scmi_process_msg() to add
an SCMI channel reference argument for when SCMI agent supports
SCMI protocol specific channels. First argument of devm_scmi_process_msg()
is also change to point to the caller SCMI protocol device rather
than its parent device (the SCMI agent device).
The argument is a pointer to opaque struct scmi_channel known from
the SCMI transport drivers. It is currently unused and caller a pass
NULL value. A later change will enable such support once SCMI protocol
drivers have means to get the channel reference during initialization.
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Changes implementation when using TEE dynamically allocated shared
memory to synchronize with the Linux implementation where the legacy
SMT protocol cannot be used with such memory since it is expected from
device mapped memory whereas OP-TEE shared memory is cached and
hence should not be accessed using memcpy_toio()/memcpy_fromio().
This change implements the MSG shared memory protocol introduced
in Linux [1]. The protocol uses a simplified SMT header of 32bit
named MSG_SMT to carry SCMI protocol information and uses side channel
means to carry exchanged buffer size information, as TEE invocation API
parameters when used in the SCMI OP-TEE transport.
Link: [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f301bba0ca7392d16a6ea4f1d264a91f1fadea1a
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Add a fuzzer to test the vring handling code against unexpected
mutations from the virtio device.
After building the sandbox with CONFIG_FUZZ=y, the fuzzer can be invoked
with by:
UBOOT_SB_FUZZ_TEST=fuzz_vring ./u-boot
This fuzzer finds unvalidated inputs in the vring driver that allow a
buggy or malicious device to make the driver chase wild pointers.
Signed-off-by: Andrew Scull <ascull@google.com>
