Commit graph

124 commits

Author SHA1 Message Date
Simon Glass
20142019a9 dm: Add a simple EEPROM driver
There seem to be a few EEPROM drivers around - perhaps we should have a
single standard one? This simple driver is used for sandbox testing, but
could be pressed into more active service.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-12-11 13:18:43 -07:00
Simon Glass
6ec1b75358 dm: i2c: Add an I2C EEPROM simulator
To enable testing of I2C, add a simple I2C EEPROM simulator for sandbox.
It supports reading and writing from a small data store.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-12-11 13:18:42 -07:00
Fabio Estevam
a847fff11c mxc_ocotp: Do not disable the OCOTP clock after every access
Leave the OCOTP turned on, so that we subsequent access do not fail.

After enabling the thermal driver on a mx6sxsabresd board:

U-Boot 2015.01-rc1-18267-g99d4189-dirty (Nov 24 2014 - 12:59:01)

CPU:   Freescale i.MX6SX rev1.0 at 792 MHz
CPU:   Temperature 48 C
Reset cause: POR
Board: MX6SX SABRE SDB
I2C:   ready
DRAM:  1 GiB
PMIC:  PFUZE100 ID=0x10
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
  00:01.0     - 16c3:abcd - Bridge device
   01:00.0    - 8086:08b1 - Network controller
In:    serial
Out:   serial
Err:   serial
Net:
(hang)

As the thermal driver accesses the ocotp registers, its clock will be disabled
afterwards.

Then when the MAC address is read (also from ocotp registers) it will cause a
hang.

Do not disable the ocotp clock to prevent this problem.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2014-12-01 10:20:19 +01:00
Hector Palacios
3d99fcbc15 mxs_ocotp: clear the error flag before initiating write operation
A previous operation may have set the error flag, which must be cleared
before a new write operation can be issued.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>
2014-12-01 10:19:42 +01:00
Hector Palacios
ad5dd7ae4b mxs_ocotp: check for errors from the OTP controller after writing
The write operation may fail when trying to write to a locked area. In
this case the ERROR bit is set in the CTRL register. Check for that
condition and return an error.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
2014-12-01 10:19:41 +01:00
Hector Palacios
d8d160e420 mxs_ocotp: prevent error path from returning success
The code may goto 'fail' upon error with 'ret' variable set to an error
code, but this variable was being overwritten by a final preparation
function to restore the HCLK, so success was (in general) returned even
after an error was hit previously.

With this change, the function may now return success even if the final
preparation function fails, but it's probably enough to print a message
because (if successful) the real programming of the fuses has already
completed.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>
2014-12-01 10:19:41 +01:00
Tom Rini
1739564e75 Merge git://git.denx.de/u-boot-dm
Conflicts:
	drivers/serial/serial-uclass.c

Signed-off-by: Tom Rini <trini@ti.com>
2014-11-24 12:01:48 -05:00
Masahiro Yamada
b41411954d linux/kernel.h: sync min, max, min3, max3 macros with Linux
U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does.  This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
 - Use min, max, min3, max3 only when the arguments have the same type
   (or add casts to the arguments)
 - Use min_t/max_t instead with the appropriate type for the first
   argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>
2014-11-23 06:48:30 -05:00
Simon Glass
d11e8fd86e cros_ec: Fix uninitialised variable in cros_ec.c
This fixes this cppcheck report:

[drivers/misc/cros_ec.c:704]: (error) Uninitialized variable: req

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Wolfgang Denk <wd@denx.de>
2014-11-22 10:16:48 +01:00
Masahiro Yamada
4515992fc7 replace DIV_ROUND with DIV_ROUND_CLOSEST
The Linux-compatible macro DIV_ROUND_CLOSEST is a bit more flexible
and safer than DIV_ROUND.

For example,
  foo = DIV_ROUND_CLOSEST(x, y++)
works expectedly, but
  foo = DIV_ROUND(x, y++)
does not. (y is incremented twice.)

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-20 11:28:25 -05:00
Tom Rini
dee8abcd80 Merge git://git.denx.de/u-boot-x86 2014-10-23 06:54:03 -04:00
Simon Glass
f1269925f9 x86: cros_ec: Update LPC driver for new cros_ec header
There was a minor rename of one of the defines, so update the driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22 21:50:32 -06:00
Simon Glass
ea0ebc8662 dm: exynos: cros_ec: Move cros_ec_spi to driver model
Adjust this driver to use driver model and move smdk5420 boards over to
use it.

Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22 10:36:53 -06:00
Simon Glass
be995a8545 dm: sandbox: cros_ec: Move sandbox cros_ec to driver module
Adjust the sandbox cros_ec emulation driver to work with driver model, and
switch over to driver model for sandbox cros_ec.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
2014-10-22 10:36:53 -06:00
Simon Glass
84d6cbd302 dm: cros_ec: Add support for driver model
Add support for driver model if enabled. This involves minimal changes
to the code, mostly just plumbing around the edges.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
2014-10-22 10:36:53 -06:00
Masahiro Yamada
ed36323f6d kconfig: add blank Kconfig files
This would be useful to start moving various config options.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2014-09-24 18:30:28 -04:00
Simon Glass
2001b9a641 cros_ec: Fix two bugs in the SPI implementation
An incorrect message version is passed to the EC in some cases and the
parameters of one function are switched.

Fix these problems.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2014-08-06 00:18:01 +05:30
Simon Glass
709ea543b9 stdio: Pass device pointer to stdio methods
At present stdio device functions do not get any clue as to which stdio
device is being acted on. Some implementations go to great lengths to work
around this, such as defining a whole separate set of functions for each
possible device.

For driver model we need to associate a stdio_dev with a device. It doesn't
seem possible to continue with this work-around approach.

Instead, add a stdio_dev pointer to each of the stdio member functions.

Note: The serial drivers have the same problem, but it is not strictly
necessary to fix that to get driver model running. Also, if we convert
serial over to driver model the problem will go away.

Code size increases by 244 bytes for Thumb2 and 428 for PowerPC.

22: stdio: Pass device pointer to stdio methods
       arm: (for 2/2 boards)  all +244.0  bss -4.0  text +248.0
   powerpc: (for 1/1 boards)  all +428.0  text +428.0

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2014-07-23 14:07:23 +01:00
Jeroen Hofstee
2b9912e6a7 includes: move openssl headers to include/u-boot
commit 18b06652cd "tools: include u-boot version of sha256.h"
unconditionally forced the sha256.h from u-boot to be used
for tools instead of the host version. This is fragile though
as it will also include the host version. Therefore move it
to include/u-boot to join u-boot/md5.h etc which were renamed
for the same reason.

cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-06-19 11:19:04 -04:00
York Sun
e77224e2d8 driver/fsl_ifc: Add a function to finalize CS0 address binding
For fsl-lsch3 NOR flash boot, IFC CS0 needs to be binded with address
within 32-bit at fist. After u-boot relocates to DDR, CS0 can be binded
to higher address to support large space.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Prabhakar Kushwaha <prabhakar@freescale.com>
2014-04-22 17:58:47 -07:00
Stefano Babic
1cad23c5f4 Merge branch 'master' of git://git.denx.de/u-boot-arm into master
Conflicts:
	arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
	arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg

Signed-off-by: Stefano Babic <sbabic@denx.de>
2014-04-04 11:35:30 +02:00
Marek Vasut
2bbcccf552 ARM: mxs: Add OCOTP driver
Add yet another OCOTP driver for this i.MX family. This time, it's a driver for
the OCOTP variant found in the i.MX23 and i.MX28. This version of OCOTP is too
different from the i.MX6 one that I could not use the mxc_ocotp.c driver without
making it into a big pile of #ifdef . This driver implements the regular fuse
command interface, but due to the IP blocks' limitation, we support only READ
and PROG functions.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
2014-03-31 18:28:50 +02:00
Simon Glass
b2a668b523 cros_ec: Implement I2C pass-through
The Chrome EC has a feature where you can access its I2C buses through a
pass-through arrangement. Add a command to support this, and export the
function for it also.

Reviewed-by: Vadim Bendebury <vbendeb@google.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:48 -06:00
Simon Glass
df93d90aea cros_ec: sandbox: Add Chrome OS EC emulation
Add a simple emulation of the Chrome OS EC for sandbox, so that it can
perform various EC tasks such as keyboard handling.

Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:47 -06:00
Simon Glass
2ab83f0d75 cros_ec: Correct comparison between signed and unsigned numbers
Due to signed/unsigned comparison, '< sizeof(struct)' does not do the right
thing, since if ec_command() returns a -ve number we will consider this be
success.

Adjust all comparisons to avoid this problem.

This error was found with sandbox, which gives a segfault in this case. On
ARM we may instead silently fail.

We should also consider turning on -Wsign-compare to catch this sort of thing
in future.

Reviewed-by: Andrew Chew <achew@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Andrew Chew <achew@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com>
2014-03-17 20:05:47 -06:00
Randall Spangler
a607028331 cros_ec: spi: Add support for EC protocol version 3
Protocol version 3 will be attempted first; if the EC doesn't support
it, u-boot will fall back to the old protocol version (2).

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:47 -06:00
Simon Glass
2d8ede58ca cros_ec: Add base support for protocol v3
Protocol v2 was shipped with snow, link and spring. Protocol v3 is for
pit and is targetted at SPI operation.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:47 -06:00
Randall Spangler
e8c1266236 cros_ec: Clean up multiple EC protocol support
Version 1 protocols (without command version) were already no longer
supported in cros_ec.c.  This removes some dead code from the
cros_ec_i2c driver.

Version 2 protcols (with command version) are now called
protocol_version=2, instead of cmd_version_is_supported=1.

A subsequent change will introduce protocol version 3 for SPI.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:47 -06:00
Simon Glass
836bb6e827 cros_ec: Sync up with latest Chrome OS EC version
The EC messages have been expanded and some parts have been renamed.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:47 -06:00
Simon Glass
1c266b9214 cros_ec: Move #ifdef to permit flash region access
Flash region access is not tied to having commands, so adjust the #ifdef
to reflect this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:46 -06:00
Vadim Bendebury
4ff9b461a8 cros_ec: Drop old EC version support from EC driver
There is no need to support old style EC moving forward. Ultimately we
should get rid of the check_version() API. For now just return error
in case the EC does not seem to support the new API.

Reviewed-by: Vadim Bendebury <vbendeb@google.com>
Tested-by: Vadim Bendebury <vbendeb@google.com>
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:46 -06:00
Simon Glass
d7f25f35f4 cros_ec: Add a function for decoding the Chrome OS EC flashmap
In order to talk to the EC properly we need to be able to understand the
layout of its internal flash memory. This permits emulation of the EC
for sandbox, and also software update in a system with a real EC.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:46 -06:00
Albert ARIBAUD
a891601ce5 Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'
Conflicts:
	include/micrel.h

The conflict above was trivial, caused by four lines being
added in both branches with different whitepace.
2014-01-06 08:49:58 +01:00
Sergey Alyoshin
4611d5bab2 arm: mx5: Add fuse supply enable in fsl_iim
Enable fuse supply before fuse programming and disable after.

Signed-off-by: Sergey Alyoshin <alyoshin.s@gmail.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2014-01-03 15:44:06 +01:00
Simon Glass
0efc02499f spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT node
This allows us to put the SPI flash chip inside the SPI interface node,
with U-Boot finding the correct bus and chip select automatically.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-12-09 12:22:12 -07:00
Tom Rini
77fdd6d1eb Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx 2013-12-02 08:38:28 -05:00
York Sun
0b66513b27 Driver/IFC: Move Freescale IFC driver to a common driver
Freescale IFC controller has been used for mpc8xxx. It will be used
for ARM-based SoC as well. This patch moves the driver to driver/misc
and fix the header file includes.

Signed-off-by: York Sun <yorksun@freescale.com>
2013-11-25 11:43:47 -08:00
Igor Grinberg
9dfdcdfed4 gpio_led: add support for inverted polarity
Some GPIO connected LEDs have inverted polarity.
Introduce new config option: CONFIG_GPIO_LED_INVERTED_TABLE for the
specifying the inverted GPIO LEDs list and add support for this in the
gpio_led driver.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Ilya Ledvich <ilya@compulab.co.il>
2013-11-25 10:41:52 -05:00
Igor Grinberg
6516f81b64 gpio_led: check gpio_request() return value
Add a check for the gpio_request() function return value and do not try
to configure the GPIO if the gpio_request() call fails.
Also, print an error message indicating the gpio_request() has failed.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Ilya Ledvich <ilya@compulab.co.il>
2013-11-25 10:41:52 -05:00
Masahiro Yamada
710f1d3d5f drivers: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-31 13:26:01 -04:00
Wolfgang Denk
3765b3e7bd Coding Style cleanup: remove trailing white space
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14 16:06:53 -04:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Hung-ying Tyan
c8d3328a0a cros: add LPC support for cros_ec
This patch adds LPC support for carrying out the cros_ec protocol.

Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Hung-ying Tyan <tyanh@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2013-06-26 10:13:28 -04:00
Hung-ying Tyan
f3424c554c cros: exynos: add SPI support for cros_ec
This patch adds SPI support for carrying out the cros_ec protocol.

Signed-off-by: Hung-ying Tyan <tyanh@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
2013-06-26 10:13:24 -04:00
Hung-ying Tyan
78764a4e11 cros: add I2C support for cros_ec
This patch adds I2C support for carrying out the cros_ec protocol.

Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Hung-ying Tyan <tyanh@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2013-06-26 10:12:24 -04:00
Hung-ying Tyan
88364387c6 cros: add cros_ec driver
This patch adds the cros_ec driver that implements the protocol for
communicating with Google's ChromeOS embedded controller.

Signed-off-by: Bernie Thompson <bhthompson@chromium.org>
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Hung-ying Tyan <tyanh@chromium.org>
Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2013-06-26 10:07:11 -04:00
Albert ARIBAUD
cac423a730 Merge branch 'u-boot-ti/master' into 'u-boot-arm/master' 2013-05-11 22:24:28 +02:00
Nishanth Menon
0208aaf6c2 twl4030: make twl4030_i2c_write_u8 prototype consistent
u-boot standard i2c register write prototype is
i2c_reg_write(u8 addr, u8 reg, u8 val)

twl4030_i2c_write_u8(u8 addr, u8 val, u8 reg)
does not provide consistency, so switch the prototype to be
consistent with rest of u-boot i2c operations:
twl4030_i2c_write_u8(u8 addr, u8 reg, u8 val)

Signed-off-by: Nishanth Menon <nm@ti.com>
2013-05-10 08:25:54 -04:00
Benoît Thébaudeau
112fd2ec6c Add mxc_ocotp driver
Add an mxc_ocotp driver for i.MX6.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-28 11:07:43 +02:00
Benoît Thébaudeau
0f67e09e9e Add fsl_iim driver
Add a fsl_iim driver common to i.MX and MPC.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-28 11:07:41 +02:00