When issuing 'i2c probe', the driver was crashing, because at probe
there is a request with zero length buffer to write to i2c bus.
The xfer_msg function assumes the buffer is always there, and never
checks for the buffer length.
=> i2c dev 0
Setting bus to 0
=> i2c probe
Valid chip addresses:
data abort
pc : [<7ffa97dc>] lr : [<7ffa96f8>]
reloc pc : [<66f277dc>] lr : [<66f276f8>]
sp : 7fb7c110 ip : 7ff87a28 fp : 7ff99938
r10: 00000002 r9 : 7fb7dec0 r8 : 00000000
r7 : e181c600 r6 : 7fb88c20 r5 : 00000000 r4 : 7fb7c128
r3 : 00000000 r2 : 00000001 r1 : 00000000 r0 : 00000009
Flags: nZCv IRQs off FIQs off Mode SVC_32
Code: eb0092f4 e1a00005 e8bd81f0 e594300c (e5d33000)
Resetting CPU ...
Fixes: 8800e0fa20 ("i2c: atmel: add i2c driver")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
The dm_gpio_set_dir_flags function cannot be used to update the
configuration of a GPIO pin because it does a bitwise OR with the
existing flags. Looks like commit 788ea83412 ("gpio: add function
_dm_gpio_set_dir_flags") has introduced this behaviour and the i2c-gpio
driver has been broken since.
Signed-off-by: Harm Berntsen <harm.berntsen@nedap.com>
CC: Heiko Schocher <hs@denx.de>
CC: Patrick Delaunay <patrick.delaunay@st.com>
OF_STDOUT_PATH was meant to hold the devicetree path to the serial
console, to be put into the linux,stdout-path property of the chosen node.
The only user of that was sunxi, and it was actually wrong for years
there: the paths hardcoded in sunxi_common.h were not matching the DTs,
evident by the leading 0's in nodenames, which have been removed years
ago.
On top of that, "linux,stdout-path" is now deprecated for a while (Linux
commit 2a9d832cc9aae from November 2014), and also all modern DTs
(including those included in U-Boot) carry a "stdout-path" property
already.
So remove the stanza from sunxi_common.h, and, since this was the last
user, also remove the associated bits from the rest of U-Boot.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The A23, A33, H3, H5, A83T, V3 and Sochip S3 sun8i SoCs can mux uart1 on
GPIOs PG6 and PG7. This patch adds support for using uart1 on those pins
as boot console.
Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
As variables were moved to Kconfig, some of the surrounding ifdefs were
left around, even though they were empty. Clean them up.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
It turns out that there is a magic bit in PRCM region which seemingly
makes PLLs work if it's enabled. Sadly, there is no documentation what
it does exactly, so we'll just mimick BSP boot0 behaviour and enable it
before any clock is set up.
Fixes: b18bd53d6c ("sunxi: introduce support for H616 clocks")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
- mmc_spi improvement
- added mmc-pwrseq to remove duplicated code
- fix response timeout after switch command
- sdhci: skip cache invalidation if DMA is not used
Before time, PWRSEQ is selected since below commit.
commit 262d343633 ("board: amlogic: select PWRSEQ for all amlogic platform")
Select MMC_PWRSEQ config because of introducing CONFIG_MMC_PWRSEQ for
only eMMC module.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
mmc_spi_sendcmd(), mmc_spi_readdata() and mmc_spi_writedata() are
currently undocumented. Add comment blocks to explain the arguments
and the return value.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
After command is sent and before card response shows up on the line,
there is a variable number of clock cycles in between called Ncr.
The spec [1] says the minimum is 1 byte and the maximum is 8 bytes.
Current logic in mmc_spi_sendcmd() has a flaw that it could only work
with certain SD cards with their Ncr being just 1 byte.
When resp_match is false, the codes try to receive only 1 byte from
the SD card. On the other hand when resp_match is true, the logic
happens to be no problem as it loops until timeout to receive as many
bytes as possible to see a match of the expected resp_match_value.
However not every call to mmc_spi_sendcmd() is made with resp_match
being true hence this exposes a potential issue with SD cards that
have a larger Ncr value.
Given no issue was reported as of today, we can reasonably conclude
that all cards being used on the supported boards happen to have a 1
byte Ncr timing requirement. But a broken case can be triggered by
utilizing QEMU to emulate a larger value of Ncr (by default 1 byte
Ncr is used on QEMU). This commit fixes such potential spec violation
to improve the card compatibility.
[1] "Physical Layer Specification Version 8.00"
chapter 7.5.1: Command / Response
chapter 7.5.4: Timing Values
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
The argument check should happen before any transfer on the SPI lines.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
After issuing the switch command: Wait until 'current state' of the card
status becomes 'tran'. This prevents from response timeout at the next
command because of 'current state' = 'data'.
Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
If DMA(SDMA or ADMA) is not used, the cache invalidation
after reading is no need, should be skipped. Otherwise
U-Boot may hang at the cache invalidation.
Found this issue and tested this fix on DragonBoard 410c.
Fixes: commit 4155ad9aac ("mmc: sdhci: fix missing cache invalidation after reading by DMA")
Signed-off-by: Yuezhang.Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
It's confusing whether arguments are optional or mandatory.
Update the command's usage to clarify how to use.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
in tftpboot, if ack was already sent previously for this
packet, don't send again.
Fixes: cc6b87ecaa ("net: tftp: Add client support for RFC 7440")
Reported-by: Suneel Garapati <suneelglinux@gmail.com>
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Tested-by: Suneel Garapati <suneelglinux@gmail.com>
Tested-by: Oliver Graute <oliver.graute@kococonnector.com>
The 'brcm,bcm2711-hdmi0' compatible string is used on RPi4 instead of
'brcm,bcm2835-hdmi' since the IP core was upgraded (now called VC6
instead of VC4). This has no functional change as far as u-boot driver
is concerned. So simply add the compatible string.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
The DM_DMA option is needed in order to translate physical address into
bus addresses on a per-device basis.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
This will allow us to use DM variants of phys_to_bus()/bus_to_phys()
when relevant.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.
Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
fix from nicolas
By reusing DT nodes already available in sandbox's test DT introduce a
test to validate dev_phys_to_bus()/dev_bus_to_phys().
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
These functions, instead of relying on hard-coded platform-specific
address translations, make use of the DMA constraints provided by the DM
core. This allows for per-device translations.
We can't yet get rid of the legacy phys_to_bus()/bus_to_phys()
implementations as some of its users are not integrated into the
device model.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Add test to validate dev->dma_offset is properly set on devices.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Calculating the DMA offset between a bus address space and CPU's every
time we call phys_to_bus() and bus_to_phys() isn't ideal performance
wise, as it implies traversing the device tree from the device's node up
to the root. Since this information is static and available before the
device's initialization, parse it before the probe call an provide the
DMA offset in 'struct udevice' for the address translation code to use
it.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Introduce some new nodes in sandbox's test device-tree and dm tests in
order to validate dev_get_dma_range().
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Add the following functions to get a specific device's DMA ranges:
- dev_get_dma_range()
- ofnode_get_dma_range()
- of_get_dma_range()
- fdt_get_dma_range()
They are specially useful in oder to be able validate a physical address
space range into a bus's and to convert addresses from and to address
spaces.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
So far we've assumed a fixed configuration for inbound windows as we had
a single user for this controller. But the controller's DMA constraints
were improved starting with BCM2711's B1 revision of the SoC, notably
available in CM4 and Pi400. They allow for wider inbound windows. We can
now cover the whole address space, whereas before we where limited to
the lower 3GB.
This information is passed to us through DT's 'dma-ranges' property and
it's specially important for us to honor it since some interactions with
the board's co-processor assume we're doing so (specifically the XHCI
firmware load operation, which is handled by the co-processor after
u-boot has correctly configured the PCIe controller).
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
The Raspberry Pi Foundation released the new Compute Module 4 which we
want to detect, so we can enable Ethernet on it and know the correct
device tree file name.
Note that this sets the Ethernet option to true since the official CM4
IO board has an Ethernet port. But that might not be the case when using
custom ones.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
The Raspberry Pi Foundation released the new RPi400 which we want to
detect, so we can enable Ethernet on it and know the correct device tree
file name.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
When RPi4 is booted from USB Mass Storage, the firmware reports 947MiB of
the ARM memory (948 in case of the standard SD-card boot). This value is
not MMU_SECTION_SIZE aligned, so the dram_bank_mmu_setup() skips mapping
of the last 1MiB. This later causes u-boot in ARM 32bit mode to freeze,
because it relocated itself into that unmapped memory and fails to
execute.
Fix this by limiting the size of the first bank to the multiple of
MMU_SECTION_SIZE.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Make sure we handover the PCIe controller in a clean state. Some of the
devices hanging from the PCIe bus might need to be properly reset
through #PERST in order for Linux to be able to initialize them.
This is specially important in order to properly initialize Raspberry Pi
4 B and 400's USB chip.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
The PCIe bus the controller is connected to might need to be removed
prior the handover. Make sure xhci-pci is also removed so as to avoid
unexpected timeouts or hangs.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
We find the iProc RNG200 in the Raspberry Pi 4. Add it to all it's
config so that it can be used.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: drop rpi_4_32b_defconfig]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
When a FIT config specifies a devicetree, we should load it, no
questions asked. In the case of the "simple" FIT loading path, a
difficulty arises in selecting the load address of the FDT.
The default FDT location is right after the "kernel" or "firmware"
image. However, if that is an OP-TEE image, then the FDT may end up in
secure DRAM, and not be accessible to normal world kernels.
Although the best solution is to be more careful about the FDT
address, a viable workaround is to only append the FDT after a u-boot
or Linux image. This is identical to the previous logic, except that
FDT loading is extended to IH_OS_LINUX images.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Use the IS_ENABLED() macro to control code flow, instead of the
caveman approach of sprinkling #ifdefs. Code size is not affected, as
the linker garbage-collects unused functions. However, readability is
improved significantly.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
There's no point in guarding function prototypes with #ifdefs. If a
function is not defined, the linker will notice. Having the prototype
does not affect code size.
What the #if guard takes away is the ability to use IS_ENABLED:
if (CONFIG_IS ENABLED(FIT_IMAGE_POST_PROCESS))
board_fit_image_post_process(...)
When the prototype is guarded, the above form cannot be used. This
leads to the proliferation of #ifdefs, and unreadable code. The
opportunity cost of the #if guard outweighs any benefits. Remove it.
Since the original version of this patch, an empty definition was
added by commit f14e6eec6c ("image: cleanup pre-processor usage").
The empty definition can cause silent failures, when an implementation
of board_fit_image_post_process() is expected because the linker will
not catch the missing function. Thus this patch removes this empty
inline declaration.
Fixes: f14e6eec6c ("image: cleanup pre-processor usage")
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The configuration node a sub node under "/configurations", which
describes the components to load from "/images". We only need to
locate this node once.
However, for each component, spl_fit_get_image_name() would parse the
FIT image, looking for the correct node. Such work duplication is not
necessary. Instead, once the node is found, cache it, and re-use it.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When a desired configuration is not found, conf_node will have a
negative value. Thus the for loop will start at the root "/" node of
the image, print the "/description" property, and stop.
It appears the intent of the loop was to print the names of the
subnodes under "/configurations". We would need the offset to the
"/configurations" node, which is abstracted by fit_find_config_node().
This change agrees that abstracting the node offset is the correct
design, and we shouldn't be parsing the configurations manually. Thus
the loop in spl_fit_get_image_name() is useless. Remove it.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Several loose arguments describe the FIT image. They are thus related,
and it makes sense to pass them together, in a structure. Examples
include the FIT blob pointer, offset to FDT nodes, and the offset to
external data.
Use a spl_fit_info structure to group these parameters.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The logical steps in spl_load_simple_fit() are difficult to follow.
I think the long comments, ifdefs, and ungodly number of variables
seriously affect the readability. In particular, it violates section 6
of the coding style, paragraphs (3), and (4).
The purpose of this patch is to improve the situation by
- Factoring out initialization and parsing to separate functions
- Reduce the number of variables by using a context structure
This change introduces no functional changes.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The size is derived from the FIT image itself. Any alignment
requirements are machine-specific and known by the board code. Thus
the total length can be derived from the FIT image and knowledge of
the platform. The 'length' argument is redundant. Remove it.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
CC: Matt Porter <mporter@konsulko.com>
Add support for random number generator RNG200.
This is for example found on RPi4.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: adapt to new struct driver memebers]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
