Commit graph

31142 commits

Author SHA1 Message Date
Simon Glass
30db918768 zynq: Rename struct clk_ops to zynq_clk_ops
Since we want clk_ops to be used in U-Boot as a whole, rename the Zynq
version until it can be converted to driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:29 -06:00
Simon Glass
f9917454d5 dm: Add a system reset uclass
It is common for system reset to be available at multiple levels in modern
hardware. For example, an SoC may provide a reset option, and a board may
provide its own reset for reasons of security or thoroughness. It is useful
to be able to model this hardware without hard-coding the behaviour in the
SoC or board. Also there is a distinction sometimes between resetting just
the CPU (leaving GPIO state alone) and resetting all the PMICs, just cutting
power.

To achieve this, add a simple system reset uclass. It allows multiple devices
to provide reset functionality and provides a way to walk through them,
requesting a particular reset type until is it provided.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:29 -06:00
Simon Glass
92a655c326 mkimage: Set up a file size parameter and keep it updated
Some functions called by mkimage would like to know the output file size.
Initially this is the same as the input file size, but it may be affected by
adding headers, etc.

Add this information to the image parameters.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2015-07-21 17:39:29 -06:00
Simon Glass
aea3d40d05 spl: Add a debug string before the jump to U-Boot
As a debug option, add positive confirmation that SPL has completed
execution. This can help with diagnosing the location of unexpected hangs.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:29 -06:00
Simon Glass
070d00b8dc dm: spl: Allow device tree/driver model in board_init_f()
Add an spl_init() function that does basic init such that board_init_f() can
use simple malloc(), device tree and driver model. Each one is set up only
if enabled for SPL.

Note: We really should refactor SPL such that there is a single
board_init_f() and rename the existing weak board_init_f() functions
provided by boards, calling them from the single board_init_f().

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:28 -06:00
Simon Glass
cb5f97f707 fdt: Provide debug info when a device tree cannot be found
It can be quite confusing with a new platform to figure out why the device
tree cannot be located. Add some debug information for this case.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:28 -06:00
Simon Glass
c4af6732c4 lib: Add function to extract a number from the end of a string
Split out the code in fdtdec which finds a number at the end of a string. It
can be useful in other situations.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:28 -06:00
Simon Glass
1acab96d97 Add rivest cipher 4 (rc4) implementation
Add an implementation of RC4. This will be used by Rockchip booting but may
be useful in other situations.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:28 -06:00
Simon Glass
6e780c7a7b ns16550: Improve debug UART so it can work with 32-bit access
Since Rockchip requires 32-bit serial access, add this to the driver.
Refactor a little to make this easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:28 -06:00
Simon Glass
6f849c3012 dm: spi: Make local functions static
Several functions in this file should be marked as static. Update them.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
6c51df6859 dm: Add support for RAM drivers
Add support for a driver which sets up DRAM and can return information about
the amount of RAM available. This is a first step towards moving RAM init
to driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
10f5f5a90e Drop CONFIG_ERRNO_STR from SPL
This bloats the code size quite a bit and is less useful in SPL where there
is no command line.

Avoid including this code in SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
30987ef10b dm: power: Allow use of regulators in SPL
This functionality may be useful for setting up regulators early during
boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
6c69c7fb57 dm: pmic: Add functions to adjust PMIC registers
It is a common requirement to update some PMIC registers. Provide some
simple convenience functions to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:27 -06:00
Simon Glass
59c26a9c22 dm: power: Use debug() for errors in regulator uclass
To reduce unnecessary code size in an uncommon code path, use debug()
where possible(). The driver returns an error which indicates failure.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:26 -06:00
Simon Glass
083fc83a4e dm: power: Add a function to set up all regulators
The device tree provides information about which regulators should be
on at boot, or always on. Use this to set them up automatically.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:26 -06:00
Simon Glass
3b55d30f6f dm: pmic: Split output from function
The regulator_autoset() function mixes printf() output and PMIC adjustment
code. It provides a boolean to control the output. It is better to avoid
missing logic and output, and this permits a smaller SPL code size. So
split the output into a separate function.

Also rename the function to have a by_name() suffix, since we would like
to be able to pass a device when we know it, and thus avoid the name
search.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:26 -06:00
Simon Glass
7837ceab1e dm: power: Add regulator flags to centralise auto-set logic
Decide when the regulator is set up whether we want to auto-set the voltage
or current. This avoids the complex logic spilling into the processing code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:26 -06:00
Simon Glass
23ec2b570d dm: power: Avoid case-insensitve match for child names
This is not user input (i.e. from the command line). It should be possible
to get the case correct and avoid the case-insensitive match. This will
help avoid sloppy device tree setups.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2015-07-21 17:39:25 -06:00
Simon Glass
6dc714102b mmc: Add structure comments for dwmmc
It took a little while to figure this out, so this patch adds documentation
to help the next person who needs to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:25 -06:00
Simon Glass
dc3dedfeb1 dm: mmc: Allow driver model to be used for MMC in SPL
Enable MMC using driver model in SPL for consistency with U-Boot proper.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:25 -06:00
Simon Glass
1169299135 mmc: Add debug() output on read errors
Allow read errors to be diagnosed more easily.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:25 -06:00
Simon Glass
e7ecf7cb5a dm: mmc: Add an MMC uclass
Add basic support for MMC, providing a uclass which can set up an MMC
device. This allows MMC drivers to move to using driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:25 -06:00
Simon Glass
fdfa39d3f2 spl: Add debugging info for spl_mmc boot
Add a few messages to indicate progress and failure.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:24 -06:00
Simon Glass
5ac76bad22 dm: led: Add a driver for GPIO-controlled LEDs
Add a simple driver which allows use of LEDs attached to GPIOs. The linux
device tree binding is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:24 -06:00
Simon Glass
5917112c9e dm: Add support for LEDs
Add a simple uclass for LEDs, so that these can be controlled by the device
tree and activated when needed. LEDs are referred to by their label.

This implementation requires a driver for each type of LED (e.g GPIO, I2C).

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:24 -06:00
Simon Glass
5725128507 dm: Add support for generic system controllers (syscon)
Many SoCs have a number of system controllers which are dealt with as a
group by a single driver. It is a pain to have to add lots of compatible
strings and/or separate drivers for each. Instead we can identify the
controllers by a number and request the address of the one we want.

Add a simple implementation of this which can be used by SoC driver code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:24 -06:00
Simon Glass
6f98b7504f dm: Add support for register maps (regmap)
Add a simple implementaton of register maps, supporting only direct I/O
for now. This can be enhanced later to support buses which have registers,
such as I2C, SPI and PCI.

It allows drivers which can operate with multiple buses to avoid dealing
with the particulars of register access on that bus.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:23 -06:00
Simon Glass
efa677fb48 dm: gpio: Add dm_gpio_request() to manually request a GPIO
This function can be used for testing to manually request a GPIO for use,
without resorting to the legacy GPIO API.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:23 -06:00
Simon Glass
32ec159844 dm: gpio: Add dm_gpio_lookup_name() to look up a GPIO name
Provide a driver-model function to look up a GPIO name. Make the standard
function use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:23 -06:00
Simon Glass
ce22c5bbee dm: gpio: Allow GPIO uclass to be used in SPL
Now that we support driver model in SPL, allow GPIO drivers to be used there
also.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:23 -06:00
Simon Glass
132f9bfc9e dm: core: Correct device_get_child_by_of_offset() parameter
This parameter is named 'seq' but should be named 'of_offset'.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:23 -06:00
Simon Glass
2693047acd dm: core: Add a function to find any device from device tree
In some rare cases it is useful to be able to locate a device given a device
tree node offset. An example is when you have an alias that points to a node
and you want to find the associated device. The device may be SPI, MMC or
something else, but you don't need to know the uclass to find it.

Add a function to do a global search for a device, given its device tree
offset.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:22 -06:00
Simon Glass
3039811e65 dm: core: Use debug() instead of printf() for failures
To avoid bloating SPL code, use debug() where possible in the driver model
core code. The error code is already returned, and can be investigated as
needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:22 -06:00
Simon Glass
304fbef156 dm: Move the tree/uclass dump code into its own file
In SPL it is sometimes useful to be able to obtain a dump of the current
driver model state. Since commands are not available, provide a way to
directly call the functions to output this information.

Adjust the existing commands to use these functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:22 -06:00
Simon Glass
da229e4e57 sandbox: Drop special-case sandbox console code
At present printf() skips output if it can see there is no console. This
is really just an optimisation, and is not necessary. Also it is currently
incorrect in some cases. Rather than update the logic, just remove it so
that we don't need to keep it in sync.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:22 -06:00
Simon Glass
d6ea5307da dm: Allow debug UART to support an early console
When there is no console ready, allow the debug UART to be used for output.
This makes debugging of early code considerably easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:22 -06:00
Simon Glass
d0d7361462 debug_uart: Remove use of asmlinkage
This does not actually help any current arch. For x86 it makes it harder
to call (requires stack) and for ARM it has no effect. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:21 -06:00
Simon Glass
c9689ca318 Add a way of checking the position of a structure member
U-Boot uses structures for hardware access so it is important that these
structures are correct. Add a way of asserting that a structure member is
at a particular offset. This can be created using the datasheet for the
hardware.

This implementation uses Static_assert() since BUILD_BUG_ON() only works
within functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:21 -06:00
Simon Glass
4eae498e68 dm: arm: Put driver model I2C drivers before legacy ones
Driver-model I2C drivers can be picked up by the linker script rule for
legacy drivers. Change the order to avoid this.

We could make the legacy code depend on !CONFIG_DM_I2C but that is not
necessary and it is good to keep conditions to a minimum.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:21 -06:00
Simon Glass
fa78e0a371 dm: Reduce SPL device tree size
The SPL device tree size must be minimised to save memory. Only include
properties that are needed by SPL - this is determined by the presence
of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of
unused properties from the nodes that remain.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:21 -06:00
Simon Glass
1043d0a029 fdt: Add fdtgrep tool
This tool allows us to extract subsets of a device tree file. It is used by
the SPL vuild, which needs to cut down the device tree size for use in
limited memory.

This tool was originally written for libfdt but it has not been accepted
upstream, so for now, include it in U-Boot. Several utilfdt library
functions been included inline here.

If fdtgrep is eventually accepted in libfdt then we can bring that version
of libfdt in here, and drop fdtgrep (requiring that fdtgrep is provided by
the user).

If it is not accepted then another approach would be to write a special
tool for chopping down device tree files for SPL. While it would use the
same libfdt support, it would be less code than fdtgrep.c because it would
not have general-purpose functions.

Another approach (which was used with v1 of this series) is to sprinkler all
the device tree files with #ifdef. I don't like that idea.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:20 -06:00
Simon Glass
c3c4c00563 fdt: Add fdt_first/next_region() functions
These have been sent upstream but not accepted to libfdt. For now, bring
these into U-Boot to enable fdtgrep to operate. We will use fdtgrep to
cut device tree files down for SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:20 -06:00
Simon Glass
8f6e2e1ee1 fdt: Add a function to remove unused strings from a device tree
Property names are stored in a string table. When a node property is
removed, the string table is not updated since other nodes may have a
property with the same name.

Thus it is possible for the string table to build up a number of unused
strings. Add a function to remove these. This works by building a new device
tree from the old one, adding strings one by one as needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:20 -06:00
Simon Glass
5b9d44df23 mkimage: Display a better list of available image types
Offer to display the available image types in help. Also, rather than
hacking the genimg_get_type_id() function to display a list of types,
do this in the tool. Also, sort the list.

The list of image types is quite long, and hard to discover. Print it out
when we show help information.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:20 -06:00
Simon Glass
a3c3cff06c sandbox: Enable dhry command
Provide access to the dhrystone benchmark command.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:20 -06:00
Simon Glass
d1389403cc Add a dhrystone benchmark command
Drystone provides a convenient sanity check that the CPU is running at full
speed. Add this as a command which can be enabled as needed.

Note: I investigated using Coremark for this but there was a license
agreement and I could not work out if it was GPL-compatible.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:19 -06:00
Tom Rini
b217c89e85 Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq 2015-07-20 17:12:52 -04:00
Zhichun Hua
db14f11dfe armv8/fsl-lsch3: Fix TCR_EL3 for the final MMU setup.
When final MMU table is setup in DDR, TCR attributes must match
those of the memroy for cacheability and shareability.

Signed-off-by: Zhichun Hua <zhichun.hua@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
2015-07-20 11:44:40 -07:00
Zhichun Hua
21a257b9b3 armv8: Fix TCR macros for shareability attribute
For ARMv8, outer shareable is 0b10, inner shareable is 0b11 at bit
position [13:12] of TCR_ELx register.

Signed-off-by: Zhichun Hua <zhichun.hua@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
2015-07-20 11:44:40 -07:00