Under some conditions it's possible to hit the null condition here like
when running with OF_LIVE and using the ofnode API before
initr_of_live() is called. There is very little null
checking for this in the FDT framework, so returning null here can
result in weird null pointer conditions.

Instead let's return the control FDT in the fallback case, this is
usually what the user was expecting.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

We already build arm64 images with frame pointers. Let's finally make
use of them in tandem with the new symbol lookup support by unwinding
the stack when an exception occurs, producing a backtrace similar to
those emitted by Linux.

In addition, introduce a dedicated unwind_stack() function which can be
called from anywhere to print a backtrace.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

This is mostly a port of the Xen hypervisor implementation. The U-Boot
binary is built as normal, then its symbol table is fed into
tools/symbols to generate an optimised lookup table. U-Boot is rebuilt
with the symbol table and handling code in lib/symbols.c.

Based on code from Xen at
  c20850540ad6("x86/altcall: always use a temporary parameter stashing variable")

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

There was some very old code floating around for decoding symbols, it's
incomplete and is never built. Remove it so we can add a new
implementation.

Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

This reverts commit dbd5ad88.

It may be the case that MMC support is enabled even though the board
we're booting on doesn't have any MMC devices. Move the print over to
the print_mmc_devices() function where we can only print it if we
actually have MMC devices.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Add a small utility for displaying some information about U-Boot and the
hardware it's running on in a similar fashion to the popular neofetch
tool for Linux [1].

While the output is meant to be useful, it should also be pleasing to
look at and perhaps entertaining. The ufetch command aims to bring this
to U-Boot, featuring a colorful ASCII art version of the U-Boot logo.

[1]: https://en.wikipedia.org/wiki/Neofetch



Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
Changes since v1:
 * Rework storage info to be more dynamic
 * use print_size() helper everywhere
 * manually walk RAM banks to report memory size correctly
 * minor formatting changes and fixes
 * MAINTAINERS entry
 * V1: https://lore.kernel.org/u-boot/20240808163153.2069650-1-caleb.connolly@linaro.org

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Simple env to boot an Android boot image via fastboot.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

If available, otherwise fall back to cmdline.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Set the vendor ID to qcom and some common product ID for fastboot mode.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Implement socinfo support to fetch the serial number if available.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

So we know if we're using U-Boot's or some other fdt...

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

checkme

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

still breaks with superspeed cables

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Zixun LI authored 8 months ago and Caleb Connolly committed 4 months ago

Revert part of 718f1d41 to move
 usb_gadget_register_driver()/usb_gadget_unregister_driver()
back to usb_eth_start()/usb_eth_stop().

usb_gadget_register_driver() will initialize the USB controller which
enters ready to connect state with pull-up resistor enabled.

>From the host's point of view, a device is ready to be enumerated.
However, since dm_usb_gadget_handle_interrupts() is only called when
ethernet function is started, at this stage USB events are not managed,
host's enumeration attempts will fail and resulting error like:
    usb 1-1: new high-speed USB device number 50 using xhci_hcd
    usb 1-1: device descriptor read/64, error -110
    usb 1-1: device descriptor read/64, error -110
    usb usb1-port1: attempt power cycle

With this patch the USB controller will only be initialized when ethernet
function is used, in which case USB controller events are handled, so the
host won't see an unresponsive device.

Signed-off-by: Zixun LI <admin@hifiphile.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

It is possible to derive the memory map for a Qualcomm platform from the
SMEM shared memory region. The memory map is populated by the preloader.

Introduce support for parsing this data and using it to populate
U-Boot's memory map. Since we aren't yet sure if this will work for
every platform, it is not yet used in all cases, if U-Boot is booted
with an internal FDT which has the memory map defined, this will
be used instead.

If the FDT comes from ABL, or we're using an internal FDT with no memory
map defined, then U-Boot will try to use SMEM. This should remove the
need to define the memory map statically in a U-Boot overlay DT for most
boards.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Allow smem to be optional for Qualcomm platforms by providing stub
functions.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Used to parse memory layout in some situations.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

This code is getting a bit complicated, split it out to try and keep
things a bit better organised and prepare for SMEM support.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Build the new SMEM driver port, and select it when ARCH_SNAPDRAGON is
selected, since it will be a hard dependency for Qualcomm platforms.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Port over the smem code to U-Boot and remove socinfo.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Drop Linux headers for the U-Boot ones.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Import the SMEM driver from Linux.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

This reverts commit 7fd7e2cf.

This reverts commit 20e77057.

Remove the old qcom SMEM driver port and the sandbox stub
implementation.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

SMEM is a highly Qualcomm specific interface, while having a dedicated
UCLASS for it offers a nice abstraction, for things like memory layout
parsing we need to use it before the driver model is available.

Therefore, it doesn't make sense to fit SMEM into the driver model.
Instead let's adopt a model closer to Linux, and parse SMEM really early
during boot (as soon as we have the FDT).

This reverts commit 7b384ecc.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

...

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

For sdcard support

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

Some Qualcomm boards feature reserved ranges of pins which are protected
by firmware. Attempting to read or write any registers associated with
these pins results the board resetting.

Add support for parsing these ranges from devicetree and ensure that the
pinctrl and GPIO drivers don't try to interact with these pins.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>